/* roulang page: index */
:root {
            --brand: #F26B1D;
            --brand-red: #D71920;
            --brand-purple: #6C3BF4;
            --brand-gold: #FFC857;
            --night: #0B0B0F;
            --smoke: #15151A;
            --card: #1D1D26;
            --main-text: #F5F5F7;
            --sub-text: #B8B8C2;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.14);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.45);
            --shadow-card-hover: 0 14px 40px rgba(242, 107, 29, 0.25);
            --shadow-glow-orange: 0 0 20px rgba(242, 107, 29, 0.35);
            --shadow-glow-purple: 0 0 20px rgba(108, 59, 244, 0.35);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1280px;
            --section-pad: 80px;
            --section-pad-mobile: 48px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'system-ui', sans-serif;
            background-color: var(--night);
            color: var(--main-text);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 15px;
            color: var(--main-text);
        }

        .container {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        .section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            position: relative;
        }

        @media (max-width: 767px) {
            .section {
                padding-top: var(--section-pad-mobile);
                padding-bottom: var(--section-pad-mobile);
            }
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(242, 107, 29, 0.12);
            color: var(--brand);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            border: 1px solid rgba(242, 107, 29, 0.25);
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--main-text);
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--sub-text);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 720px;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 38px;
            }
            .section-subtitle {
                font-size: 17px;
            }
        }

        @media (min-width: 1024px) {
            .section-title {
                font-size: 42px;
            }
        }

        /* ========== 杂志刊头导航 ========== */
        .masthead {
            background: var(--night);
            border-bottom: 1px solid var(--border-subtle);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            background: rgba(11, 11, 15, 0.92);
        }

        .masthead-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            padding-bottom: 14px;
            gap: 16px;
        }

        .masthead-logo {
            font-size: 32px;
            font-weight: 900;
            letter-spacing: -0.01em;
            color: var(--main-text);
            white-space: nowrap;
            line-height: 1.1;
        }

        .masthead-logo span {
            color: var(--brand);
        }

        .masthead-nav {
            display: none;
            align-items: center;
            gap: 0;
            flex-wrap: nowrap;
        }

        .masthead-nav .nav-item {
            display: flex;
            align-items: center;
            font-size: 14px;
            font-weight: 500;
            color: var(--sub-text);
            padding: 6px 10px;
            transition: color var(--transition-fast);
            white-space: nowrap;
            border-left: 1px solid var(--border-subtle);
        }

        .masthead-nav .nav-item:first-child {
            border-left: none;
        }

        .masthead-nav .nav-item:hover {
            color: var(--main-text);
        }

        .masthead-nav .nav-item.active {
            color: var(--brand);
        }

        .masthead-nav .nav-item.active::after {
            content: '';
            position: absolute;
            bottom: -14px;
            left: 10px;
            right: 10px;
            height: 2px;
            background: var(--brand);
        }

        .masthead-nav .nav-item {
            position: relative;
        }

        .hamburger-btn {
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .hamburger-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--main-text);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 16px 0 20px;
            background: var(--smoke);
            border-top: 1px solid var(--border-subtle);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .nav-item {
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 500;
            color: var(--sub-text);
            border-bottom: 1px solid var(--border-subtle);
            transition: color var(--transition-fast);
        }

        .mobile-menu .nav-item:hover,
        .mobile-menu .nav-item.active {
            color: var(--brand);
        }

        @media (min-width: 900px) {
            .masthead-nav {
                display: flex;
            }
            .hamburger-btn {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
        }

        @media (max-width: 899px) {
            .masthead-logo {
                font-size: 26px;
            }
            .masthead-nav {
                display: none;
            }
            .hamburger-btn {
                display: flex;
            }
        }

        /* ========== Hero Bento ========== */
        .hero-bento {
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 72px 0 64px;
        }

        .hero-bento::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 11, 15, 0.82) 0%, rgba(11, 11, 15, 0.7) 50%, rgba(11, 11, 15, 0.92) 100%);
            z-index: 0;
        }

        .hero-bento .container {
            position: relative;
            z-index: 1;
        }

        .bento-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }

        .bento-main {
            background: rgba(29, 29, 38, 0.72);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 32px 24px;
            backdrop-filter: blur(8px);
        }

        .bento-main h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--main-text);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .bento-main h1 .highlight {
            color: var(--brand);
        }

        .bento-main p {
            font-size: 16px;
            color: var(--sub-text);
            line-height: 1.85;
            margin-bottom: 24px;
            max-width: 620px;
        }

        .bento-cta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            background: var(--brand);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            border-radius: 10px;
            transition: all var(--transition-base);
            border: none;
            letter-spacing: 0.01em;
        }

        .btn-primary:hover {
            background: var(--brand-red);
            box-shadow: var(--shadow-glow-orange);
            transform: translateY(-2px);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            background: transparent;
            color: var(--main-text);
            font-weight: 600;
            font-size: 15px;
            border-radius: 10px;
            border: 1px solid var(--border-strong);
            transition: all var(--transition-base);
        }

        .btn-secondary:hover {
            border-color: var(--brand);
            color: var(--brand);
            box-shadow: var(--shadow-glow-orange);
        }

        .bento-side {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }

        .bento-small {
            background: rgba(29, 29, 38, 0.65);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 20px 18px;
            backdrop-filter: blur(8px);
            transition: all var(--transition-base);
        }

        .bento-small:hover {
            border-color: rgba(242, 107, 29, 0.4);
            box-shadow: var(--shadow-card-hover);
        }

        .bento-small .bento-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(242, 107, 29, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 10px;
            color: var(--brand);
        }

        .bento-small h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--main-text);
            margin-bottom: 6px;
            line-height: 1.3;
        }

        .bento-small p {
            font-size: 13px;
            color: var(--sub-text);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .hero-stat-row {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin-top: 20px;
        }

        .hero-stat {
            background: rgba(11, 11, 15, 0.7);
            border: 1px solid var(--border-subtle);
            border-radius: 10px;
            padding: 14px;
            text-align: center;
        }

        .hero-stat .stat-num {
            font-size: 24px;
            font-weight: 800;
            font-family: 'Roboto Mono', monospace;
            color: var(--brand);
            line-height: 1.2;
        }

        .hero-stat .stat-label {
            font-size: 12px;
            color: var(--sub-text);
            margin-top: 4px;
        }

        @media (min-width: 768px) {
            .bento-grid {
                grid-template-columns: 2fr 1fr;
                gap: 20px;
            }
            .bento-main {
                padding: 40px 32px;
            }
            .bento-main h1 {
                font-size: 44px;
            }
            .hero-stat-row {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .hero-stat .stat-num {
                font-size: 30px;
            }
        }

        @media (min-width: 1024px) {
            .bento-main h1 {
                font-size: 52px;
            }
            .bento-main p {
                font-size: 17px;
            }
            .hero-stat .stat-num {
                font-size: 32px;
            }
        }

        /* ========== 指标看板 ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
        }

        .metric-card {
            background: var(--card);
            border: 1px solid rgba(242, 107, 29, 0.25);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--brand), var(--brand-purple));
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .metric-card:hover {
            border-color: var(--brand);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .metric-card:hover::before {
            opacity: 1;
        }

        .metric-value {
            font-size: 30px;
            font-weight: 800;
            font-family: 'Roboto Mono', monospace;
            color: var(--brand);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .metric-label {
            font-size: 13px;
            color: var(--sub-text);
            font-weight: 500;
        }

        .metric-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            margin-top: 8px;
            padding: 3px 10px;
            border-radius: 999px;
            background: rgba(242, 107, 29, 0.1);
            color: var(--brand);
        }

        .metric-trend.up {
            background: rgba(242, 107, 29, 0.1);
            color: var(--brand);
        }

        @media (min-width: 640px) {
            .metrics-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
        }

        @media (min-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(6, 1fr);
                gap: 18px;
            }
            .metric-value {
                font-size: 34px;
            }
        }

        /* ========== 服务矩阵 ========== */
        .service-matrix {
            display: grid;
            grid-template-columns: 1fr;
            gap: 18px;
        }

        .service-card {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            transition: all var(--transition-base);
            position: relative;
        }

        .service-card:hover {
            border-color: rgba(242, 107, 29, 0.5);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .service-number {
            font-size: 12px;
            font-weight: 700;
            color: var(--brand);
            letter-spacing: 0.08em;
            margin-bottom: 10px;
        }

        .service-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(242, 107, 29, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 12px;
            color: var(--brand);
        }

        .service-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--main-text);
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .service-card p {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.75;
            margin-bottom: 12px;
        }

        .service-metric {
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-gold);
            font-family: 'Roboto Mono', monospace;
        }

        @media (min-width: 640px) {
            .service-matrix {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-card.large {
                grid-column: span 2;
            }
        }

        @media (min-width: 1024px) {
            .service-matrix {
                grid-template-columns: repeat(3, 1fr);
                gap: 22px;
            }
            .service-card {
                padding: 28px 24px;
            }
            .service-card.large {
                grid-column: span 1;
                grid-row: span 2;
                display: flex;
                flex-direction: column;
                justify-content: space-between;
            }
        }

        /* ========== 深度内容区 ========== */
        .deep-content {
            background: var(--smoke);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            overflow: hidden;
        }

        .deep-content-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 0;
        }

        .deep-content-text {
            padding: 28px 24px;
        }

        .deep-content-text h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--main-text);
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .deep-content-text h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--brand);
            margin-top: 24px;
            margin-bottom: 10px;
            line-height: 1.3;
        }

        .deep-content-text p {
            font-size: 15px;
            color: var(--sub-text);
            line-height: 1.85;
            margin-bottom: 14px;
        }

        .deep-content-text ul,
        .deep-content-text ol {
            margin-bottom: 16px;
            padding-left: 0;
            list-style: none;
        }

        .deep-content-text ul li,
        .deep-content-text ol li {
            font-size: 15px;
            color: var(--sub-text);
            line-height: 1.75;
            margin-bottom: 8px;
            padding-left: 20px;
            position: relative;
        }

        .deep-content-text ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 10px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--brand);
        }

        .deep-content-text ol li::before {
            content: counter(item);
            position: absolute;
            left: 0;
            top: 0;
            color: var(--brand);
            font-weight: 700;
            font-size: 14px;
            counter-increment: item;
        }

        .deep-content-text ol {
            counter-reset: item;
        }

        .deep-content-image {
            min-height: 280px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .deep-content-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }

        @media (min-width: 768px) {
            .deep-content-grid {
                grid-template-columns: 3fr 2fr;
            }
            .deep-content-text {
                padding: 40px 36px;
            }
            .deep-content-text h2 {
                font-size: 32px;
            }
            .deep-content-image {
                min-height: 100%;
            }
        }

        @media (min-width: 1024px) {
            .deep-content-text {
                padding: 48px 44px;
            }
            .deep-content-text h2 {
                font-size: 36px;
            }
        }

        /* ========== 结果对比 ========== */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 18px;
        }

        .compare-card {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            transition: all var(--transition-base);
        }

        .compare-card:hover {
            border-color: rgba(108, 59, 244, 0.4);
            box-shadow: var(--shadow-glow-purple);
        }

        .compare-card.winner {
            border-color: rgba(242, 107, 29, 0.5);
            box-shadow: var(--shadow-glow-orange);
        }

        .compare-label {
            font-size: 13px;
            font-weight: 700;
            color: var(--brand-purple);
            letter-spacing: 0.05em;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .compare-card.winner .compare-label {
            color: var(--brand);
        }

        .compare-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--main-text);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .compare-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .compare-list li {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.7;
            padding: 8px 0;
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .compare-list li:last-child {
            border-bottom: none;
        }

        .compare-list .icon-up {
            color: var(--brand);
            font-weight: 700;
            flex-shrink: 0;
        }

        .compare-list .icon-warn {
            color: var(--brand-red);
            font-weight: 700;
            flex-shrink: 0;
        }

        @media (min-width: 768px) {
            .compare-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .compare-card {
                padding: 30px 28px;
            }
        }

        /* ========== 新闻中心 ========== */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 18px;
        }

        .news-card {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            border-color: rgba(242, 107, 29, 0.5);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .news-cover {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }

        .news-body {
            padding: 18px 16px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-date {
            font-size: 12px;
            color: var(--sub-text);
            margin-bottom: 8px;
        }

        .news-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--main-text);
            line-height: 1.35;
            margin-bottom: 8px;
        }

        .news-snippet {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.75;
            margin-bottom: 14px;
            flex: 1;
        }

        .news-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand);
            transition: all var(--transition-fast);
            align-self: flex-start;
        }

        .news-link:hover {
            color: var(--brand-red);
            gap: 10px;
        }

        @media (min-width: 640px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (min-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 24px;
            }
            .news-title {
                font-size: 18px;
            }
        }

        /* ========== 品牌介绍 ========== */
        .brand-intro {
            background: var(--smoke);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 28px 24px;
        }

        .brand-intro h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--main-text);
            margin-bottom: 14px;
        }

        .brand-intro p {
            font-size: 15px;
            color: var(--sub-text);
            line-height: 1.85;
            margin-bottom: 12px;
        }

        @media (min-width: 768px) {
            .brand-intro {
                padding: 36px 32px;
            }
            .brand-intro h2 {
                font-size: 30px;
            }
        }

        /* ========== 场景演示 ========== */
        .scene-demo {
            display: grid;
            grid-template-columns: 1fr;
            gap: 18px;
        }

        .scene-step {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 22px 18px;
            transition: all var(--transition-base);
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }

        .scene-step:hover {
            border-color: rgba(242, 107, 29, 0.4);
            box-shadow: var(--shadow-card-hover);
        }

        .scene-step-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(242, 107, 29, 0.15);
            color: var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
            flex-shrink: 0;
            font-family: 'Roboto Mono', monospace;
        }

        .scene-step h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--main-text);
            margin-bottom: 6px;
            line-height: 1.3;
        }

        .scene-step p {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.7;
            margin-bottom: 0;
        }

        @media (min-width: 768px) {
            .scene-demo {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }
            .scene-step {
                flex-direction: column;
                gap: 12px;
                padding: 28px 22px;
            }
        }

        /* ========== 版本更新 ========== */
        .changelog-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .changelog-item {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 18px 16px;
            transition: all var(--transition-base);
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }

        .changelog-item:hover {
            border-color: rgba(242, 107, 29, 0.4);
        }

        .changelog-version {
            font-size: 12px;
            font-weight: 700;
            color: var(--brand);
            font-family: 'Roboto Mono', monospace;
            white-space: nowrap;
            padding: 4px 10px;
            background: rgba(242, 107, 29, 0.1);
            border-radius: 6px;
            flex-shrink: 0;
        }

        .changelog-item p {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 合集目录 ========== */
        .collection-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
        }

        .collection-card {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 20px 16px;
            transition: all var(--transition-base);
            text-align: center;
        }

        .collection-card:hover {
            border-color: rgba(242, 107, 29, 0.5);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .collection-count {
            font-size: 28px;
            font-weight: 800;
            font-family: 'Roboto Mono', monospace;
            color: var(--brand);
            line-height: 1.2;
        }

        .collection-name {
            font-size: 14px;
            color: var(--sub-text);
            font-weight: 500;
            margin-top: 4px;
        }

        @media (min-width: 640px) {
            .collection-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 16px;
            }
            .collection-card {
                padding: 26px 18px;
            }
            .collection-count {
                font-size: 32px;
            }
        }

        /* ========== 精选分类 ========== */
        .featured-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .featured-tag {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--sub-text);
            transition: all var(--transition-base);
        }

        .featured-tag:hover {
            border-color: var(--brand);
            color: var(--brand);
            box-shadow: var(--shadow-glow-orange);
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item.active {
            border-color: var(--brand);
            background: rgba(29, 29, 38, 0.95);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 18px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 700;
            color: var(--main-text);
            transition: color var(--transition-fast);
            gap: 12px;
            text-align: left;
            width: 100%;
        }

        .faq-question:hover {
            color: var(--brand);
        }

        .faq-arrow {
            flex-shrink: 0;
            font-size: 14px;
            color: var(--sub-text);
            transition: transform var(--transition-base);
            font-weight: 400;
        }

        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            color: var(--brand);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 18px 16px;
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.75;
        }

        /* ========== 转化表单 ========== */
        .cta-form-section {
            background: var(--smoke);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 28px 20px;
        }

        .cta-form-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }

        .cta-form-info h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--main-text);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .cta-form-info p {
            font-size: 15px;
            color: var(--sub-text);
            line-height: 1.8;
            margin-bottom: 0;
        }

        .cta-form-info ul {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
        }

        .cta-form-info ul li {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.7;
            padding: 6px 0;
            padding-left: 20px;
            position: relative;
        }

        .cta-form-info ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--brand);
            font-weight: 700;
        }

        .form-group {
            margin-bottom: 14px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--sub-text);
            margin-bottom: 6px;
        }

        .form-input {
            width: 100%;
            padding: 12px 16px;
            background: rgba(11, 11, 15, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            color: var(--main-text);
            font-size: 15px;
            transition: all var(--transition-fast);
            outline: none;
        }

        .form-input::placeholder {
            color: rgba(184, 184, 194, 0.6);
        }

        .form-input:focus {
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(242, 107, 29, 0.2), var(--shadow-glow-orange);
        }

        .form-submit {
            width: 100%;
            padding: 14px 24px;
            background: var(--brand);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            border-radius: 10px;
            transition: all var(--transition-base);
            border: none;
            letter-spacing: 0.01em;
        }

        .form-submit:hover {
            background: var(--brand-red);
            box-shadow: var(--shadow-glow-orange);
            transform: translateY(-2px);
        }

        @media (min-width: 768px) {
            .cta-form-section {
                padding: 40px 32px;
            }
            .cta-form-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
                align-items: center;
            }
            .cta-form-info h2 {
                font-size: 30px;
            }
        }

        /* ========== 浮动转化条 ========== */
        .floating-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(11, 11, 15, 0.95);
            backdrop-filter: blur(16px);
            border-top: 1px solid rgba(242, 107, 29, 0.3);
            padding: 12px 20px;
            z-index: 60;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
        }

        .floating-cta p {
            font-size: 14px;
            color: var(--sub-text);
            margin-bottom: 0;
            flex: 1;
            min-width: 180px;
        }

        .floating-cta .btn-primary {
            padding: 10px 18px;
            font-size: 14px;
            white-space: nowrap;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #08080B;
            border-top: 1px solid var(--border-subtle);
            padding: 40px 0 80px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 28px;
        }

        .footer-brand h3 {
            font-size: 24px;
            font-weight: 900;
            color: var(--main-text);
            margin-bottom: 8px;
        }

        .footer-brand h3 span {
            color: var(--brand);
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.7;
            margin-bottom: 0;
            max-width: 320px;
        }

        .footer-links h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--main-text);
            margin-bottom: 12px;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links ul li {
            margin-bottom: 8px;
        }

        .footer-links ul li a {
            font-size: 14px;
            color: var(--sub-text);
            transition: color var(--transition-fast);
        }

        .footer-links ul li a:hover {
            color: var(--brand);
        }

        .footer-bottom {
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
            font-size: 13px;
            color: var(--sub-text);
            line-height: 1.7;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
        }

        .footer-bottom a {
            color: var(--sub-text);
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--brand);
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
                gap: 32px;
            }
            .footer-bottom {
                gap: 20px;
            }
        }

        /* ========== 装饰元素 ========== */
        .orbit-ring {
            position: absolute;
            border: 1px solid rgba(242, 107, 29, 0.15);
            border-radius: 50%;
            pointer-events: none;
            z-index: 0;
        }

        .signal-dot {
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--brand);
            margin-right: 4px;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(1.4);
            }
        }

        .star-accent {
            color: var(--brand-gold);
            font-size: 14px;
        }

        .divider-line {
            height: 1px;
            background: var(--border-subtle);
            width: 100%;
            margin: 16px 0;
        }

        /* ========== 响应式细节 ========== */
        @media (max-width: 519px) {
            .bento-main h1 {
                font-size: 28px;
            }
            .section-title {
                font-size: 26px;
            }
            .metric-value {
                font-size: 24px;
            }
            .hero-stat-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 520px) and (max-width: 767px) {
            .bento-main h1 {
                font-size: 32px;
            }
        }

/* roulang page: category2 */
:root {
            --brand: #F26B1D;
            --brand-red: #D71920;
            --brand-purple: #6C3BF4;
            --brand-gold: #FFC857;
            --night: #0B0B0F;
            --smoke: #15151A;
            --card: #1D1D26;
            --main-text: #F5F5F7;
            --sub-text: #B8B8C2;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.14);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.45);
            --shadow-card-hover: 0 14px 40px rgba(242, 107, 29, 0.25);
            --shadow-glow-orange: 0 0 20px rgba(242, 107, 29, 0.35);
            --shadow-glow-purple: 0 0 20px rgba(108, 59, 244, 0.35);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1280px;
            --section-pad: 80px;
            --section-pad-mobile: 48px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        * {
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'system-ui', sans-serif;
            background-color: var(--night);
            color: var(--main-text);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 15px;
            color: var(--main-text);
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6,
        p {
            margin: 0;
        }
        h1,
        h2,
        h3,
        h4 {
            line-height: 1.3;
        }
        .container {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }
        .section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            position: relative;
        }
        @media (max-width: 640px) {
            .section {
                padding-top: var(--section-pad-mobile);
                padding-bottom: var(--section-pad-mobile);
            }
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(242, 107, 29, 0.12);
            color: var(--brand);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            border: 1px solid rgba(242, 107, 29, 0.25);
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--main-text);
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--sub-text);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 720px;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 38px;
            }
            .section-subtitle {
                font-size: 17px;
            }
        }
        @media (min-width: 1024px) {
            .section-title {
                font-size: 42px;
            }
        }
        .masthead-logo {
            font-size: 32px;
            font-weight: 900;
            letter-spacing: -0.01em;
            color: var(--main-text);
            white-space: nowrap;
            line-height: 1.1;
        }
        .masthead-logo span {
            color: var(--brand);
        }
        .masthead-nav {
            display: none;
            align-items: center;
            gap: 0;
            flex-wrap: nowrap;
        }
        .masthead-nav .nav-item {
            display: flex;
            align-items: center;
            font-size: 14px;
            font-weight: 500;
            color: var(--sub-text);
            padding: 6px 10px;
            transition: color var(--transition-fast);
            white-space: nowrap;
            border-left: 1px solid var(--border-subtle);
            position: relative;
        }
        .masthead-nav .nav-item:first-child {
            border-left: none;
        }
        .masthead-nav .nav-item:hover {
            color: var(--main-text);
        }
        .masthead-nav .nav-item.active {
            color: var(--brand);
        }
        .masthead-nav .nav-item.active::after {
            content: '';
            position: absolute;
            bottom: -14px;
            left: 10px;
            right: 10px;
            height: 2px;
            background: var(--brand);
        }
        @media (min-width: 1024px) {
            .masthead-nav {
                display: flex;
            }
        }
        .hamburger-btn {
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .hamburger-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--main-text);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        @media (min-width: 1024px) {
            .hamburger-btn {
                display: none;
            }
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 16px 0 20px;
            background: var(--smoke);
            border-top: 1px solid var(--border-subtle);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-item {
            padding: 10px 0;
            font-size: 15px;
            font-weight: 500;
            color: var(--sub-text);
            border-bottom: 1px solid var(--border-subtle);
        }
        .mobile-menu .nav-item.active {
            color: var(--brand);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 15px;
            background: var(--brand);
            color: #fff;
            transition: all var(--transition-base);
            border: 1px solid var(--brand);
            box-shadow: 0 4px 16px rgba(242, 107, 29, 0.3);
        }
        .btn-primary:hover {
            background: var(--brand-red);
            border-color: var(--brand-red);
            box-shadow: 0 6px 24px rgba(215, 25, 32, 0.45);
            transform: translateY(-2px);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 14px;
            background: transparent;
            color: var(--main-text);
            border: 1px solid var(--border-strong);
            transition: all var(--transition-base);
        }
        .btn-outline:hover {
            border-color: var(--brand);
            color: var(--brand);
            background: rgba(242, 107, 29, 0.08);
        }
        .card {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            overflow: hidden;
        }
        .card:hover {
            border-color: rgba(242, 107, 29, 0.5);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .metric-value {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--main-text);
            font-variant-numeric: tabular-nums;
        }
        .metric-value span {
            font-size: 16px;
            font-weight: 500;
            color: var(--brand);
        }
        .hero-bg {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .hero-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 11, 15, 0.92) 0%, rgba(11, 11, 15, 0.78) 45%, rgba(11, 11, 15, 0.65) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .cover-img {
            aspect-ratio: 16 / 9;
            object-fit: cover;
            width: 100%;
            border-radius: var(--radius-md);
        }
        .tag-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(242, 107, 29, 0.15);
            color: var(--brand);
            border: 1px solid rgba(242, 107, 29, 0.3);
        }
        .faq-item {
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            background: var(--smoke);
            transition: all var(--transition-base);
        }
        .faq-item.active {
            border-color: var(--brand);
            background: #1a1a24;
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 700;
            color: var(--main-text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .faq-question .arrow {
            font-size: 18px;
            color: var(--sub-text);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question .arrow {
            color: var(--brand);
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base);
            color: var(--sub-text);
            font-size: 14px;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 20px 18px;
        }
        .form-input {
            width: 100%;
            padding: 14px 18px;
            border-radius: var(--radius-md);
            background: rgba(13, 13, 18, 0.9);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--main-text);
            transition: all var(--transition-fast);
            font-size: 15px;
        }
        .form-input::placeholder {
            color: #6a6a72;
        }
        .form-input:focus {
            outline: none;
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(242, 107, 29, 0.2), var(--shadow-glow-orange);
        }
        .site-footer {
            background: #08080b;
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
            position: relative;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr 1fr;
            }
        }
        .footer-brand h3 {
            font-size: 28px;
            font-weight: 900;
            margin-bottom: 12px;
            color: var(--main-text);
        }
        .footer-brand h3 span {
            color: var(--brand);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-links h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--main-text);
            margin-bottom: 14px;
        }
        .footer-links ul li {
            margin-bottom: 8px;
        }
        .footer-links ul li a {
            font-size: 14px;
            color: var(--sub-text);
            transition: color var(--transition-fast);
        }
        .footer-links ul li a:hover {
            color: var(--brand);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 16px;
            font-size: 13px;
            color: var(--sub-text);
        }
        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }
        .footer-bottom a {
            color: var(--sub-text);
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: var(--brand);
        }
        .grid-article {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }
        @media (min-width: 640px) {
            .grid-article {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (min-width: 1024px) {
            .grid-article {
                grid-template-columns: 1fr 1fr 1fr;
            }
        }
        .grid-single {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }
        @media (min-width: 640px) {
            .grid-single {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (min-width: 1024px) {
            .grid-single {
                grid-template-columns: 1fr 1fr 1fr 1fr;
            }
        }
        .metric-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition-base);
        }
        .metric-card:hover {
            border-color: rgba(242, 107, 29, 0.5);
            box-shadow: var(--shadow-card-hover);
        }
        .metric-card .metric-label {
            font-size: 13px;
            color: var(--sub-text);
            margin-top: 6px;
            font-weight: 500;
        }
        .divider-line {
            height: 1px;
            background: var(--border-subtle);
            width: 100%;
        }
        .chip-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .chip-list .chip {
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-subtle);
            color: var(--sub-text);
        }
        .chip-list .chip:hover {
            border-color: rgba(242, 107, 29, 0.4);
            color: var(--brand);
        }
        .step-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(242, 107, 29, 0.15);
            border: 1px solid rgba(242, 107, 29, 0.35);
            color: var(--brand);
            font-weight: 800;
            font-size: 18px;
            flex-shrink: 0;
        }
        .overlay-light::after {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 11, 15, 0.6);
            pointer-events: none;
            border-radius: inherit;
        }
        @media (max-width: 640px) {
            .masthead-logo {
                font-size: 26px;
            }
            .metric-value {
                font-size: 26px;
            }
        }

/* roulang page: category3 */
:root {
            --brand: #F26B1D;
            --brand-red: #D71920;
            --brand-purple: #6C3BF4;
            --brand-gold: #FFC857;
            --night: #0B0B0F;
            --smoke: #15151A;
            --card: #1D1D26;
            --main-text: #F5F5F7;
            --sub-text: #B8B8C2;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.14);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.45);
            --shadow-card-hover: 0 14px 40px rgba(242, 107, 29, 0.25);
            --shadow-glow-orange: 0 0 20px rgba(242, 107, 29, 0.35);
            --shadow-glow-purple: 0 0 20px rgba(108, 59, 244, 0.35);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1280px;
            --section-pad: 80px;
            --section-pad-mobile: 48px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'system-ui', sans-serif;
            background-color: var(--night);
            color: var(--main-text);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 15px;
            color: var(--main-text);
        }

        .container {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (min-width: 640px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        .section {
            padding-top: var(--section-pad-mobile);
            padding-bottom: var(--section-pad-mobile);
            position: relative;
        }

        @media (min-width: 1024px) {
            .section {
                padding-top: var(--section-pad);
                padding-bottom: var(--section-pad);
            }
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(242, 107, 29, 0.12);
            color: var(--brand);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            border: 1px solid rgba(242, 107, 29, 0.25);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--main-text);
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--sub-text);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 720px;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 36px;
            }
            .section-subtitle {
                font-size: 17px;
            }
        }

        @media (min-width: 1280px) {
            .section-title {
                font-size: 40px;
            }
        }

        .masthead-logo {
            font-size: 28px;
            font-weight: 900;
            letter-spacing: -0.01em;
            color: var(--main-text);
            white-space: nowrap;
            line-height: 1.1;
        }

        .masthead-logo span {
            color: var(--brand);
        }

        @media (min-width: 768px) {
            .masthead-logo {
                font-size: 32px;
            }
        }

        .masthead-nav {
            display: none;
            align-items: center;
            gap: 0;
            flex-wrap: nowrap;
        }

        .masthead-nav .nav-item {
            display: flex;
            align-items: center;
            font-size: 14px;
            font-weight: 500;
            color: var(--sub-text);
            padding: 6px 10px;
            transition: color var(--transition-fast);
            white-space: nowrap;
            border-left: 1px solid var(--border-subtle);
            position: relative;
        }

        .masthead-nav .nav-item:first-child {
            border-left: none;
        }

        .masthead-nav .nav-item:hover {
            color: var(--main-text);
        }

        .masthead-nav .nav-item.active {
            color: var(--brand);
        }

        .masthead-nav .nav-item.active::after {
            content: '';
            position: absolute;
            bottom: -14px;
            left: 10px;
            right: 10px;
            height: 2px;
            background: var(--brand);
        }

        @media (min-width: 1024px) {
            .masthead-nav {
                display: flex;
            }
        }

        .hamburger-btn {
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .hamburger-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--main-text);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        @media (min-width: 1024px) {
            .hamburger-btn {
                display: none;
            }
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 16px 0 20px;
            background: var(--smoke);
            border-bottom: 1px solid var(--border-subtle);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .nav-item {
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--sub-text);
            border-bottom: 1px solid var(--border-subtle);
        }

        .mobile-menu .nav-item.active {
            color: var(--brand);
            border-left: 3px solid var(--brand);
            padding-left: 13px;
        }

        .mobile-menu .nav-item:hover {
            color: var(--main-text);
        }

        @media (min-width: 1024px) {
            .mobile-menu {
                display: none !important;
            }
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 11, 15, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
        }

        .masthead-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 14px;
            padding-bottom: 14px;
        }

        .masthead-divider {
            width: 1px;
            height: 28px;
            background: var(--border-strong);
            margin: 0 8px;
            display: none;
        }

        @media (min-width: 1024px) {
            .masthead-divider {
                display: block;
            }
        }

        .hero-section {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 11, 15, 0.92) 0%, rgba(11, 11, 15, 0.7) 40%, rgba(108, 59, 244, 0.35) 100%);
            z-index: 1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 80% 20%, rgba(242, 107, 29, 0.15) 0%, transparent 60%);
            z-index: 1;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            padding-top: 60px;
            padding-bottom: 60px;
        }

        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--sub-text);
            margin-bottom: 16px;
        }

        .hero-breadcrumb a:hover {
            color: var(--brand);
        }

        .hero-breadcrumb .sep {
            color: var(--border-strong);
        }

        .hero-title {
            font-size: 36px;
            font-weight: 900;
            line-height: 1.25;
            color: var(--main-text);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .hero-title .accent {
            color: var(--brand);
        }

        .hero-description {
            font-size: 16px;
            color: var(--sub-text);
            line-height: 1.85;
            max-width: 720px;
            margin-bottom: 28px;
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .hero-stat .stat-num {
            font-size: 26px;
            font-weight: 900;
            color: var(--brand);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }

        .hero-stat .stat-label {
            font-size: 13px;
            color: var(--sub-text);
        }

        @media (min-width: 768px) {
            .hero-section {
                min-height: 480px;
            }
            .hero-title {
                font-size: 48px;
            }
            .hero-description {
                font-size: 17px;
            }
        }

        @media (min-width: 1280px) {
            .hero-title {
                font-size: 56px;
            }
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 999px;
            background: var(--brand);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            transition: all var(--transition-base);
            box-shadow: 0 4px 16px rgba(242, 107, 29, 0.3);
            border: none;
        }

        .btn-primary:hover {
            background: var(--brand-red);
            box-shadow: 0 6px 24px rgba(215, 25, 32, 0.4);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(242, 107, 29, 0.25);
        }

        .article-list-section {
            background: var(--night);
        }

        .article-list-item {
            display: flex;
            flex-direction: column;
            gap: 16px;
            padding: 24px;
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            transition: all var(--transition-base);
            margin-bottom: 16px;
            position: relative;
            overflow: hidden;
        }

        .article-list-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: var(--brand);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .article-list-item:hover {
            border-color: rgba(242, 107, 29, 0.35);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }

        .article-list-item:hover::before {
            opacity: 1;
        }

        .article-list-top {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
        }

        .article-date {
            font-size: 13px;
            color: var(--sub-text);
            font-weight: 500;
            letter-spacing: 0.03em;
            padding: 4px 12px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 999px;
        }

        .article-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--brand);
            padding: 4px 12px;
            background: rgba(242, 107, 29, 0.1);
            border-radius: 999px;
            letter-spacing: 0.03em;
        }

        .article-list-title {
            font-size: 20px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--main-text);
            transition: color var(--transition-fast);
        }

        .article-list-item:hover .article-list-title {
            color: var(--brand);
        }

        .article-list-excerpt {
            font-size: 15px;
            color: var(--sub-text);
            line-height: 1.8;
        }

        .article-list-footer {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .article-read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 600;
            color: var(--brand);
            transition: all var(--transition-fast);
        }

        .article-read-more:hover {
            color: var(--brand-red);
            gap: 10px;
        }

        .article-read-more .arrow {
            font-size: 18px;
            line-height: 1;
            transition: transform var(--transition-fast);
        }

        .article-read-more:hover .arrow {
            transform: translateX(4px);
        }

        @media (min-width: 768px) {
            .article-list-item {
                flex-direction: row;
                align-items: flex-start;
                gap: 24px;
                padding: 28px;
            }
            .article-list-thumb {
                flex-shrink: 0;
                width: 200px;
                height: 112px;
                border-radius: var(--radius-md);
                overflow: hidden;
            }
            .article-list-thumb img {
                width: 100%;
                height: 100%;
                object-fit: cover;
            }
            .article-list-body {
                flex: 1;
                min-width: 0;
            }
            .article-list-title {
                font-size: 22px;
            }
        }

        .article-list-thumb {
            display: none;
        }

        @media (min-width: 768px) {
            .article-list-thumb {
                display: block;
            }
        }

        .match-schedule-card {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 28px;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .match-schedule-card::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(242, 107, 29, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .match-schedule-card:hover {
            border-color: rgba(242, 107, 29, 0.3);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }

        .match-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--brand);
            margin-right: 8px;
            animation: pulse-dot 1.8s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(1.4); }
        }

        .data-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        @media (min-width: 768px) {
            .data-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 20px;
            }
        }

        .data-card {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 20px;
            text-align: center;
            transition: all var(--transition-base);
        }

        .data-card:hover {
            border-color: rgba(242, 107, 29, 0.35);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .data-num {
            font-size: 28px;
            font-weight: 900;
            color: var(--brand);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.01em;
        }

        .data-label {
            font-size: 13px;
            color: var(--sub-text);
            margin-top: 6px;
        }

        @media (min-width: 768px) {
            .data-num {
                font-size: 34px;
            }
        }

        .faq-section {
            background: var(--smoke);
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item.active {
            border-color: rgba(242, 107, 29, 0.4);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 700;
            color: var(--main-text);
            cursor: pointer;
            transition: color var(--transition-fast);
            width: 100%;
            text-align: left;
            background: none;
            border: none;
        }

        .faq-question:hover {
            color: var(--brand);
        }

        .faq-icon {
            font-size: 20px;
            color: var(--brand);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
            padding: 0 20px;
            font-size: 15px;
            color: var(--sub-text);
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 20px 20px;
        }

        .cta-section {
            background: var(--night);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 100%, rgba(108, 59, 244, 0.2) 0%, transparent 60%);
            pointer-events: none;
        }

        .cta-panel {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 36px 28px;
            position: relative;
            z-index: 1;
            transition: all var(--transition-base);
        }

        .cta-panel:hover {
            border-color: rgba(242, 107, 29, 0.3);
            box-shadow: var(--shadow-card);
        }

        @media (min-width: 768px) {
            .cta-panel {
                padding: 48px;
            }
        }

        .cta-form {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }

        @media (min-width: 768px) {
            .cta-form {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }

        .form-field {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .form-field label {
            font-size: 14px;
            font-weight: 600;
            color: var(--main-text);
        }

        .form-field input,
        .form-field select,
        .form-field textarea {
            background: rgba(11, 11, 15, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            font-size: 15px;
            color: var(--main-text);
            transition: all var(--transition-fast);
            width: 100%;
        }

        .form-field input::placeholder,
        .form-field textarea::placeholder {
            color: rgba(184, 184, 194, 0.6);
        }

        .form-field input:focus,
        .form-field select:focus,
        .form-field textarea:focus {
            outline: none;
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(242, 107, 29, 0.15), var(--shadow-glow-orange);
        }

        .form-field.full-width {
            grid-column: 1 / -1;
        }

        .form-submit {
            padding: 14px 36px;
            border-radius: 999px;
            background: var(--brand);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            transition: all var(--transition-base);
            border: none;
            box-shadow: 0 4px 16px rgba(242, 107, 29, 0.3);
            width: 100%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .form-submit:hover {
            background: var(--brand-red);
            box-shadow: 0 6px 24px rgba(215, 25, 32, 0.4);
            transform: translateY(-2px);
        }

        .form-submit:active {
            transform: translateY(0);
        }

        .site-footer {
            background: #08080B;
            border-top: 1px solid var(--border-subtle);
            padding-top: 60px;
            padding-bottom: 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
                gap: 40px;
            }
        }

        .footer-brand h3 {
            font-size: 24px;
            font-weight: 900;
            color: var(--main-text);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .footer-brand h3 span {
            color: var(--brand);
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-links h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--main-text);
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links ul li a {
            font-size: 14px;
            color: var(--sub-text);
            transition: color var(--transition-fast);
        }

        .footer-links ul li a:hover {
            color: var(--brand);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 13px;
            color: var(--sub-text);
        }

        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: flex-start;
                gap: 20px;
            }
        }

        .footer-bottom a {
            color: var(--sub-text);
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--brand);
        }

        .footer-bottom p {
            margin: 0 0 4px;
        }

        .deep-content-section {
            background: var(--smoke);
        }

        .deep-content-block {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 32px 28px;
            transition: all var(--transition-base);
        }

        .deep-content-block:hover {
            border-color: rgba(242, 107, 29, 0.3);
            box-shadow: var(--shadow-card);
        }

        @media (min-width: 768px) {
            .deep-content-block {
                padding: 40px;
            }
        }

        .deep-content-block h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--main-text);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .deep-content-block h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--brand);
            margin-bottom: 10px;
            margin-top: 20px;
            line-height: 1.4;
        }

        .deep-content-block p {
            font-size: 15px;
            color: var(--sub-text);
            line-height: 1.9;
            margin-bottom: 14px;
        }

        .deep-content-block ul {
            list-style: none;
            padding: 0;
            margin: 0 0 14px;
        }

        .deep-content-block ul li {
            font-size: 15px;
            color: var(--sub-text);
            line-height: 1.8;
            padding-left: 20px;
            position: relative;
            margin-bottom: 8px;
        }

        .deep-content-block ul li::before {
            content: '›';
            position: absolute;
            left: 0;
            color: var(--brand);
            font-weight: 700;
            font-size: 18px;
            line-height: 1.5;
        }

        .highlight-box {
            background: rgba(242, 107, 29, 0.08);
            border-left: 3px solid var(--brand);
            padding: 16px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin-bottom: 14px;
        }

        .highlight-box p {
            margin-bottom: 0;
            font-size: 14px;
            color: var(--main-text);
        }

        .badge-gold {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 10px;
            background: rgba(255, 200, 87, 0.15);
            color: var(--brand-gold);
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
        }

        .text-brand {
            color: var(--brand);
        }

        .text-brand-red {
            color: var(--brand-red);
        }

        .text-brand-purple {
            color: var(--brand-purple);
        }

/* roulang page: category1 */
:root {
            --brand: #F26B1D;
            --brand-red: #D71920;
            --brand-purple: #6C3BF4;
            --brand-gold: #FFC857;
            --night: #0B0B0F;
            --smoke: #15151A;
            --card: #1D1D26;
            --main-text: #F5F5F7;
            --sub-text: #B8B8C2;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.14);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.45);
            --shadow-card-hover: 0 14px 40px rgba(242, 107, 29, 0.25);
            --shadow-glow-orange: 0 0 20px rgba(242, 107, 29, 0.35);
            --shadow-glow-purple: 0 0 20px rgba(108, 59, 244, 0.35);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1280px;
            --section-pad: 80px;
            --section-pad-mobile: 48px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'system-ui', sans-serif;
            background-color: var(--night);
            color: var(--main-text);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 15px;
            color: var(--main-text);
        }

        .container {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        .section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            position: relative;
        }

        @media (max-width: 767px) {
            .section {
                padding-top: var(--section-pad-mobile);
                padding-bottom: var(--section-pad-mobile);
            }
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(242, 107, 29, 0.12);
            color: var(--brand);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            border: 1px solid rgba(242, 107, 29, 0.25);
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--main-text);
            margin-bottom: 12px;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 38px;
            }
        }

        @media (min-width: 1024px) {
            .section-title {
                font-size: 42px;
            }
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--sub-text);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 720px;
        }

        @media (min-width: 768px) {
            .section-subtitle {
                font-size: 17px;
            }
        }

        /* 杂志刊头导航 */
        .masthead-logo {
            font-size: 32px;
            font-weight: 900;
            letter-spacing: -0.01em;
            color: var(--main-text);
            white-space: nowrap;
            line-height: 1.1;
        }

        .masthead-logo span {
            color: var(--brand);
        }

        .masthead-nav {
            display: none;
            align-items: center;
            gap: 0;
            flex-wrap: nowrap;
        }

        .masthead-nav .nav-item {
            display: flex;
            align-items: center;
            font-size: 14px;
            font-weight: 500;
            color: var(--sub-text);
            padding: 6px 10px;
            transition: color var(--transition-fast);
            white-space: nowrap;
            border-left: 1px solid var(--border-subtle);
            position: relative;
        }

        .masthead-nav .nav-item:first-child {
            border-left: none;
        }

        .masthead-nav .nav-item:hover {
            color: var(--main-text);
        }

        .masthead-nav .nav-item.active {
            color: var(--brand);
        }

        .masthead-nav .nav-item.active::after {
            content: '';
            position: absolute;
            bottom: -14px;
            left: 10px;
            right: 10px;
            height: 2px;
            background: var(--brand);
        }

        .masthead-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
            z-index: 50;
        }

        .hamburger-btn {
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .hamburger-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--main-text);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 16px 0 20px;
            background: var(--smoke);
            border-bottom: 1px solid var(--border-subtle);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .nav-item {
            display: block;
            color: var(--sub-text);
            font-size: 15px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-subtle);
            transition: color var(--transition-fast);
        }

        .mobile-menu .nav-item:hover {
            color: var(--main-text);
        }

        .mobile-menu .nav-item.active {
            color: var(--brand);
            font-weight: 600;
        }

        @media (min-width: 1024px) {
            .masthead-nav {
                display: flex;
            }
            .hamburger-btn {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
        }

        /* Hero 分类页 */
        .cat-hero {
            position: relative;
            min-height: 460px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .cat-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 11, 15, 0.88) 0%, rgba(11, 11, 15, 0.62) 45%, rgba(108, 59, 244, 0.38) 100%);
            z-index: 1;
        }

        .cat-hero::after {
            content: '';
            position: absolute;
            bottom: -80px;
            right: -60px;
            width: 340px;
            height: 340px;
            background: radial-gradient(circle, rgba(242, 107, 29, 0.28) 0%, transparent 65%);
            border-radius: 50%;
            z-index: 1;
            pointer-events: none;
        }

        .cat-hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
            padding: 64px 0;
        }

        .cat-hero h1 {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--main-text);
            margin-bottom: 18px;
        }

        .cat-hero h1 .accent {
            color: var(--brand);
        }

        .cat-hero p {
            font-size: 16px;
            color: var(--sub-text);
            line-height: 1.85;
            margin-bottom: 28px;
            max-width: 620px;
        }

        @media (min-width: 768px) {
            .cat-hero {
                min-height: 520px;
            }
            .cat-hero h1 {
                font-size: 48px;
            }
            .cat-hero p {
                font-size: 17px;
            }
        }

        @media (min-width: 1024px) {
            .cat-hero h1 {
                font-size: 56px;
            }
        }

        .btn-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            border-radius: 12px;
            background: var(--brand);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-glow-orange);
            letter-spacing: 0.01em;
        }

        .btn-brand:hover {
            background: var(--brand-purple);
            box-shadow: var(--shadow-glow-purple);
            transform: translateY(-2px);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            border-radius: 12px;
            border: 1px solid var(--border-strong);
            color: var(--main-text);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition-base);
            background: rgba(255, 255, 255, 0.04);
            letter-spacing: 0.01em;
        }

        .btn-outline:hover {
            border-color: var(--brand);
            color: var(--brand);
            background: rgba(242, 107, 29, 0.08);
            transform: translateY(-2px);
        }

        .play-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            transition: all var(--transition-base);
            flex-shrink: 0;
        }

        .play-btn:hover {
            background: var(--brand);
            border-color: var(--brand);
            box-shadow: var(--shadow-glow-orange);
            transform: scale(1.06);
        }

        .play-btn svg {
            width: 20px;
            height: 20px;
            fill: #fff;
        }

        /* 数据速览指标卡 */
        .metric-card {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--brand), var(--brand-purple));
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .metric-card:hover {
            border-color: rgba(242, 107, 29, 0.45);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .metric-card:hover::before {
            opacity: 1;
        }

        .metric-number {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--brand);
            font-family: 'Inter', 'Roboto', 'system-ui', monospace;
            letter-spacing: -0.02em;
        }

        .metric-label {
            font-size: 14px;
            color: var(--sub-text);
            margin-top: 6px;
            font-weight: 500;
            line-height: 1.5;
        }

        .metric-unit {
            font-size: 14px;
            color: var(--brand-gold);
            font-weight: 600;
            margin-left: 4px;
        }

        /* 文章卡片网格 */
        .article-card {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-card);
        }

        .article-card:hover {
            border-color: rgba(242, 107, 29, 0.5);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .article-cover {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--smoke);
            position: relative;
        }

        .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }

        .article-card:hover .article-cover img {
            transform: scale(1.05);
        }

        .article-cover .tag-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(242, 107, 29, 0.9);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.03em;
        }

        .article-body {
            padding: 20px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .article-date {
            font-size: 13px;
            color: var(--sub-text);
            margin-bottom: 10px;
            font-weight: 500;
        }

        .article-body h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--main-text);
            margin-bottom: 10px;
            transition: color var(--transition-fast);
        }

        .article-card:hover .article-body h3 {
            color: var(--brand);
        }

        .article-excerpt {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.75;
            flex: 1;
            margin-bottom: 16px;
        }

        .read-more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand);
            transition: all var(--transition-fast);
        }

        .read-more-link:hover {
            color: var(--brand-purple);
            gap: 10px;
        }

        .read-more-link svg {
            width: 16px;
            height: 16px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
            transition: transform var(--transition-fast);
        }

        .read-more-link:hover svg {
            transform: translateX(3px);
        }

        /* 深度内容区 */
        .deep-content {
            background: var(--smoke);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 32px 24px;
            box-shadow: var(--shadow-card);
        }

        @media (min-width: 768px) {
            .deep-content {
                padding: 44px 40px;
            }
        }

        .deep-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--main-text);
            line-height: 1.35;
            margin-bottom: 18px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border-subtle);
        }

        @media (min-width: 768px) {
            .deep-content h2 {
                font-size: 30px;
            }
        }

        .deep-content h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--brand);
            margin-top: 28px;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .deep-content p {
            font-size: 15px;
            color: var(--sub-text);
            line-height: 1.9;
            margin-bottom: 16px;
            text-align: justify;
        }

        /* 场景卡片 */
        .scene-card {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px 22px;
            transition: all var(--transition-base);
            position: relative;
        }

        .scene-card:hover {
            border-color: rgba(108, 59, 244, 0.45);
            box-shadow: 0 10px 30px rgba(108, 59, 244, 0.18);
            transform: translateY(-3px);
        }

        .scene-number {
            font-size: 28px;
            font-weight: 800;
            color: rgba(242, 107, 29, 0.35);
            line-height: 1;
            margin-bottom: 12px;
            font-family: 'Inter', 'Roboto', monospace;
        }

        .scene-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--main-text);
            margin-bottom: 8px;
            line-height: 1.45;
        }

        .scene-card p {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.75;
        }

        /* 流程步骤 */
        .step-item {
            display: flex;
            gap: 18px;
            align-items: flex-start;
            padding: 18px 20px;
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            transition: all var(--transition-base);
        }

        .step-item:hover {
            border-color: rgba(242, 107, 29, 0.4);
            box-shadow: var(--shadow-card-hover);
        }

        .step-dot {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--brand), var(--brand-red));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            box-shadow: var(--shadow-glow-orange);
        }

        .step-item h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--main-text);
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .step-item p {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            margin-bottom: 12px;
        }

        .faq-item.active {
            border-color: rgba(242, 107, 29, 0.55);
            box-shadow: 0 6px 20px rgba(242, 107, 29, 0.14);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            background: transparent;
            border: none;
            color: var(--main-text);
            font-size: 16px;
            font-weight: 600;
            text-align: left;
            line-height: 1.5;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--brand);
        }

        .faq-arrow {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            transition: transform var(--transition-base);
            position: relative;
        }

        .faq-arrow::before,
        .faq-arrow::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 10px;
            height: 2px;
            background: var(--brand);
            border-radius: 2px;
            transform: translate(-50%, -50%);
        }

        .faq-arrow::after {
            transform: translate(-50%, -50%) rotate(90deg);
            transition: opacity var(--transition-base);
        }

        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
        }

        .faq-item.active .faq-arrow::after {
            opacity: 0;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
            padding: 0 20px;
            color: var(--sub-text);
            font-size: 14px;
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 20px 20px;
        }

        /* CTA 表单区 */
        .cta-section {
            background: linear-gradient(180deg, var(--smoke) 0%, var(--night) 100%);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(242, 107, 29, 0.15) 0%, transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }

        .form-card {
            background: var(--card);
            border: 1px solid var(--border-strong);
            border-radius: var(--radius-xl);
            padding: 36px 28px;
            box-shadow: var(--shadow-card);
            position: relative;
            z-index: 2;
        }

        @media (min-width: 768px) {
            .form-card {
                padding: 44px 40px;
            }
        }

        .form-field {
            width: 100%;
            padding: 14px 16px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-strong);
            color: var(--main-text);
            font-size: 15px;
            transition: all var(--transition-base);
            margin-bottom: 16px;
        }

        .form-field::placeholder {
            color: rgba(184, 184, 194, 0.6);
        }

        .form-field:focus {
            border-color: var(--brand);
            box-shadow: 0 0 0 4px rgba(242, 107, 29, 0.15);
            outline: none;
            background: rgba(242, 107, 29, 0.04);
        }

        textarea.form-field {
            resize: vertical;
            min-height: 120px;
        }

        .form-benefit {
            color: var(--sub-text);
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .form-benefit strong {
            color: var(--brand);
            font-weight: 600;
        }

        /* 页脚 */
        .site-footer {
            background: var(--night);
            border-top: 1px solid var(--border-subtle);
            padding: 56px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
                gap: 24px;
            }
        }

        .footer-brand h3 {
            font-size: 24px;
            font-weight: 800;
            color: var(--main-text);
            margin-bottom: 10px;
        }

        .footer-brand h3 span {
            color: var(--brand);
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.75;
            max-width: 360px;
        }

        .footer-links h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--main-text);
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            font-size: 14px;
            color: var(--sub-text);
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--brand);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 13px;
            color: var(--sub-text);
        }

        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }

        .footer-bottom a {
            color: var(--sub-text);
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--brand);
        }

/* roulang page: category4 */
:root {
            --brand: #F26B1D;
            --brand-red: #D71920;
            --brand-purple: #6C3BF4;
            --brand-gold: #FFC857;
            --night: #0B0B0F;
            --smoke: #15151A;
            --card: #1D1D26;
            --main-text: #F5F5F7;
            --sub-text: #B8B8C2;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.14);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.45);
            --shadow-card-hover: 0 14px 40px rgba(242, 107, 29, 0.25);
            --shadow-glow-orange: 0 0 20px rgba(242, 107, 29, 0.35);
            --shadow-glow-purple: 0 0 20px rgba(108, 59, 244, 0.35);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1280px;
            --section-pad: 80px;
            --section-pad-mobile: 48px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'system-ui', sans-serif;
            background-color: var(--night);
            color: var(--main-text);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        *,
        *::before,
        *::after {
            box-sizing: inherit;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 15px;
            color: var(--main-text);
        }

        .container {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        .section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            position: relative;
        }

        @media (max-width: 767px) {
            .section {
                padding-top: var(--section-pad-mobile);
                padding-bottom: var(--section-pad-mobile);
            }
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(242, 107, 29, 0.12);
            color: var(--brand);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            border: 1px solid rgba(242, 107, 29, 0.25);
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--main-text);
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--sub-text);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 720px;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 38px;
            }
            .section-subtitle {
                font-size: 17px;
            }
        }

        @media (min-width: 1024px) {
            .section-title {
                font-size: 42px;
            }
        }

        /* Masthead Navigation */
        .masthead-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(11, 11, 15, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
        }

        .masthead-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 16px;
            padding-bottom: 16px;
            flex-wrap: wrap;
        }

        .masthead-logo {
            font-size: 32px;
            font-weight: 900;
            letter-spacing: -0.01em;
            color: var(--main-text);
            white-space: nowrap;
            line-height: 1.1;
        }

        .masthead-logo span {
            color: var(--brand);
        }

        .masthead-nav {
            display: none;
            align-items: center;
            gap: 0;
            flex-wrap: nowrap;
        }

        .masthead-nav .nav-item {
            display: flex;
            align-items: center;
            font-size: 14px;
            font-weight: 500;
            color: var(--sub-text);
            padding: 6px 10px;
            transition: color var(--transition-fast);
            white-space: nowrap;
            border-left: 1px solid var(--border-subtle);
            position: relative;
        }

        .masthead-nav .nav-item:first-child {
            border-left: none;
        }

        .masthead-nav .nav-item:hover {
            color: var(--main-text);
        }

        .masthead-nav .nav-item.active {
            color: var(--brand);
        }

        .masthead-nav .nav-item.active::after {
            content: '';
            position: absolute;
            bottom: -18px;
            left: 10px;
            right: 10px;
            height: 2px;
            background: var(--brand);
        }

        .hamburger-btn {
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .hamburger-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--main-text);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 16px 0 20px;
            background: var(--smoke);
            border-top: 1px solid var(--border-subtle);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .nav-item {
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 500;
            color: var(--sub-text);
            border-left: 3px solid transparent;
            transition: all var(--transition-fast);
        }

        .mobile-menu .nav-item:hover,
        .mobile-menu .nav-item.active {
            color: var(--brand);
            border-left-color: var(--brand);
            background: rgba(242, 107, 29, 0.06);
        }

        @media (min-width: 1024px) {
            .masthead-nav {
                display: flex;
            }
            .hamburger-btn {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
        }

        /* Category Hero */
        .cat-hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 80px 0 70px;
            min-height: 360px;
            display: flex;
            align-items: center;
        }

        .cat-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 11, 15, 0.88) 0%, rgba(11, 11, 15, 0.72) 50%, rgba(11, 11, 15, 0.88) 100%);
            z-index: 1;
        }

        .cat-hero .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .cat-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--sub-text);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .cat-hero .breadcrumb a:hover {
            color: var(--brand);
        }

        .cat-hero h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--main-text);
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }

        .cat-hero h1 span {
            color: var(--brand);
        }

        .cat-hero .lead {
            font-size: 16px;
            color: var(--sub-text);
            line-height: 1.8;
            max-width: 720px;
            margin-bottom: 24px;
        }

        .cat-hero .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 8px;
        }

        .cat-hero .hero-stat {
            background: rgba(29, 29, 38, 0.7);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 12px 20px;
            min-width: 120px;
        }

        .cat-hero .hero-stat .num {
            font-size: 26px;
            font-weight: 800;
            color: var(--brand);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }

        .cat-hero .hero-stat .label {
            font-size: 12px;
            color: var(--sub-text);
            letter-spacing: 0.02em;
        }

        @media (min-width: 768px) {
            .cat-hero h1 {
                font-size: 48px;
            }
            .cat-hero {
                padding: 100px 0 90px;
                min-height: 420px;
            }
        }

        @media (min-width: 1024px) {
            .cat-hero h1 {
                font-size: 56px;
            }
        }

        /* Article List - Text-heavy */
        .article-list-section {
            background: var(--smoke);
        }

        .article-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            overflow: hidden;
            background: var(--night);
        }

        .article-list-item {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
            padding: 24px;
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-fast), border-color var(--transition-fast);
            position: relative;
        }

        .article-list-item:last-child {
            border-bottom: none;
        }

        .article-list-item:hover {
            background: var(--card);
            border-color: var(--border-strong);
        }

        .article-list-item .article-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--sub-text);
        }

        .article-list-item .article-date {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--sub-text);
            font-size: 13px;
        }

        .article-list-item .article-tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 999px;
            background: rgba(242, 107, 29, 0.1);
            color: var(--brand);
            font-size: 12px;
            font-weight: 500;
            border: 1px solid rgba(242, 107, 29, 0.2);
        }

        .article-list-item h3 {
            font-size: 20px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--main-text);
            margin: 4px 0 8px;
        }

        .article-list-item p {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.75;
            margin-bottom: 12px;
            max-width: 800px;
        }

        .article-list-item .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand);
            transition: gap var(--transition-fast);
        }

        .article-list-item .read-more:hover {
            gap: 10px;
            color: var(--brand-purple);
        }

        .article-thumb {
            border-radius: var(--radius-md);
            overflow: hidden;
            aspect-ratio: 16/9;
            background: var(--card);
        }

        .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }

        .article-list-item:hover .article-thumb img {
            transform: scale(1.03);
        }

        @media (min-width: 768px) {
            .article-list-item {
                grid-template-columns: 220px 1fr;
                gap: 24px;
                padding: 28px;
            }
            .article-list-item h3 {
                font-size: 22px;
            }
        }

        @media (min-width: 1024px) {
            .article-list-item {
                grid-template-columns: 260px 1fr;
                gap: 32px;
                padding: 32px;
            }
        }

        /* Deep Content Block */
        .deep-content {
            background: var(--night);
            position: relative;
        }

        .deep-content .content-wrapper {
            max-width: 860px;
            margin: 0 auto;
        }

        .deep-content h2 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--main-text);
            margin-bottom: 20px;
            letter-spacing: -0.01em;
        }

        .deep-content h2 span {
            color: var(--brand);
        }

        .deep-content p {
            font-size: 16px;
            color: var(--main-text);
            line-height: 1.9;
            margin-bottom: 20px;
            opacity: 0.92;
        }

        .deep-content .highlight-box {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-left: 4px solid var(--brand);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            margin: 24px 0;
        }

        .deep-content .highlight-box p {
            margin-bottom: 0;
            font-size: 15px;
            opacity: 1;
        }

        .deep-content ul {
            list-style: none;
            padding: 0;
            margin: 20px 0;
        }

        .deep-content ul li {
            padding: 12px 16px 12px 36px;
            position: relative;
            font-size: 15px;
            color: var(--main-text);
            border-bottom: 1px solid var(--border-subtle);
            line-height: 1.75;
        }

        .deep-content ul li::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--brand);
            box-shadow: 0 0 12px rgba(242, 107, 29, 0.5);
        }

        @media (min-width: 768px) {
            .deep-content h2 {
                font-size: 34px;
            }
        }

        /* FAQ */
        .faq-section {
            background: var(--smoke);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--night);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }

        .faq-item.open {
            border-color: var(--brand);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 700;
            color: var(--main-text);
            cursor: pointer;
            transition: color var(--transition-fast);
            width: 100%;
            text-align: left;
        }

        .faq-question:hover {
            color: var(--brand);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--brand);
            transition: transform var(--transition-base);
        }

        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.8;
            margin: 0;
        }

        /* CTA */
        .cta-section {
            background: var(--night);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(242, 107, 29, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-card {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 40px 28px;
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .cta-card h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--main-text);
            margin-bottom: 12px;
        }

        .cta-card p {
            font-size: 15px;
            color: var(--sub-text);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 999px;
            background: var(--brand);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-glow-orange);
        }

        .cta-btn:hover {
            background: var(--brand-red);
            box-shadow: 0 0 28px rgba(215, 25, 32, 0.45);
            transform: translateY(-2px);
        }

        @media (min-width: 768px) {
            .cta-card {
                padding: 56px 48px;
            }
            .cta-card h2 {
                font-size: 34px;
            }
        }

        /* Footer */
        .site-footer {
            background: #08080B;
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 24px;
            font-weight: 900;
            color: var(--main-text);
            margin-bottom: 12px;
        }

        .footer-brand h3 span {
            color: var(--brand);
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-links h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--main-text);
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links ul li {
            margin-bottom: 8px;
        }

        .footer-links ul li a {
            font-size: 14px;
            color: var(--sub-text);
            transition: color var(--transition-fast);
        }

        .footer-links ul li a:hover {
            color: var(--brand);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 13px;
            color: var(--sub-text);
        }

        .footer-bottom a {
            color: var(--sub-text);
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--brand);
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr 1fr;
            }
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }

        /* Decorative elements */
        .deco-rings {
            position: absolute;
            top: 20%;
            right: -80px;
            width: 200px;
            height: 200px;
            border: 1px solid rgba(242, 107, 29, 0.2);
            border-radius: 50%;
            pointer-events: none;
        }

        .deco-rings::before {
            content: '';
            position: absolute;
            inset: 20px;
            border: 1px solid rgba(108, 59, 244, 0.15);
            border-radius: 50%;
        }

        .deco-rings::after {
            content: '';
            position: absolute;
            inset: 40px;
            border: 1px solid rgba(255, 200, 87, 0.1);
            border-radius: 50%;
        }

/* roulang page: category5 */
:root {
            --brand: #F26B1D;
            --brand-red: #D71920;
            --brand-purple: #6C3BF4;
            --brand-gold: #FFC857;
            --night: #0B0B0F;
            --smoke: #15151A;
            --card: #1D1D26;
            --main-text: #F5F5F7;
            --sub-text: #B8B8C2;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.14);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.45);
            --shadow-card-hover: 0 14px 40px rgba(242, 107, 29, 0.25);
            --shadow-glow-orange: 0 0 20px rgba(242, 107, 29, 0.35);
            --shadow-glow-purple: 0 0 20px rgba(108, 59, 244, 0.35);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1280px;
            --section-pad: 80px;
            --section-pad-mobile: 48px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'system-ui', sans-serif;
            background-color: var(--night);
            color: var(--main-text);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 15px;
            color: var(--main-text);
        }

        .container {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        .section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            position: relative;
        }

        @media (max-width: 767px) {
            .section {
                padding-top: var(--section-pad-mobile);
                padding-bottom: var(--section-pad-mobile);
            }
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(242, 107, 29, 0.12);
            color: var(--brand);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            border: 1px solid rgba(242, 107, 29, 0.25);
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--main-text);
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--sub-text);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 720px;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 38px;
            }
            .section-subtitle {
                font-size: 17px;
            }
        }

        @media (min-width: 1024px) {
            .section-title {
                font-size: 42px;
            }
        }

        .masthead-logo {
            font-size: 32px;
            font-weight: 900;
            letter-spacing: -0.01em;
            color: var(--main-text);
            white-space: nowrap;
            line-height: 1.1;
        }

        .masthead-logo span {
            color: var(--brand);
        }

        .masthead-nav {
            display: none;
            align-items: center;
            gap: 0;
            flex-wrap: nowrap;
        }

        .masthead-nav .nav-item {
            display: flex;
            align-items: center;
            font-size: 14px;
            font-weight: 500;
            color: var(--sub-text);
            padding: 6px 16px;
            transition: color var(--transition-fast);
            white-space: nowrap;
            border-left: 1px solid var(--border-subtle);
            position: relative;
        }

        .masthead-nav .nav-item:first-child {
            border-left: none;
        }

        .masthead-nav .nav-item:hover {
            color: var(--main-text);
        }

        .masthead-nav .nav-item.active {
            color: var(--brand);
        }

        .masthead-nav .nav-item.active::after {
            content: '';
            position: absolute;
            bottom: -14px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--brand);
        }

        .hamburger-btn {
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .hamburger-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--main-text);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 16px 0 20px;
            background: var(--smoke);
            border-bottom: 1px solid var(--border-subtle);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .mobile-nav-item {
            font-size: 15px;
            font-weight: 500;
            color: var(--sub-text);
            padding: 12px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            transition: all var(--transition-fast);
        }

        .mobile-menu .mobile-nav-item:hover {
            color: var(--main-text);
            background: rgba(255, 255, 255, 0.03);
        }

        .mobile-menu .mobile-nav-item.active {
            color: var(--brand);
            border-left: 3px solid var(--brand);
            padding-left: 21px;
        }

        @media (min-width: 1024px) {
            .masthead-nav {
                display: flex;
            }
            .hamburger-btn {
                display: none;
            }
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--brand);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
            border: none;
            cursor: pointer;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .btn-primary:hover {
            background: var(--brand-purple);
            box-shadow: var(--shadow-glow-purple);
            transform: translateY(-2px);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--main-text);
            font-weight: 500;
            font-size: 14px;
            padding: 12px 22px;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            border: 1px solid var(--border-strong);
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-outline:hover {
            border-color: var(--brand);
            color: var(--brand);
            box-shadow: var(--shadow-glow-orange);
        }

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--brand);
            font-size: 14px;
            font-weight: 600;
            transition: all var(--transition-fast);
            background: none;
            border: none;
            padding: 0;
            cursor: pointer;
        }

        .btn-text:hover {
            color: var(--brand-purple);
            gap: 10px;
        }

        .card-article {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-card);
        }

        .card-article:hover {
            border-color: rgba(242, 107, 29, 0.5);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .card-article .article-img-wrap {
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--smoke);
        }

        .card-article .article-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }

        .card-article:hover .article-img-wrap img {
            transform: scale(1.04);
        }

        .card-article .article-body {
            padding: 20px 24px 24px;
        }

        .card-article .article-date {
            font-size: 13px;
            color: var(--sub-text);
            letter-spacing: 0.03em;
            margin-bottom: 8px;
        }

        .card-article .article-title {
            font-size: 19px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--main-text);
            margin-bottom: 10px;
            transition: color var(--transition-fast);
        }

        .card-article:hover .article-title {
            color: var(--brand);
        }

        .card-article .article-excerpt {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.75;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-list-item {
            display: flex;
            gap: 20px;
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 16px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-card);
        }

        .article-list-item:hover {
            border-color: rgba(242, 107, 29, 0.5);
            box-shadow: var(--shadow-card-hover);
            transform: translateX(4px);
        }

        .article-list-item .list-img {
            width: 180px;
            min-width: 180px;
            aspect-ratio: 16 / 10;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--smoke);
        }

        .article-list-item .list-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }

        .article-list-item:hover .list-img img {
            transform: scale(1.05);
        }

        .article-list-item .list-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .article-list-item .article-date {
            font-size: 12px;
            color: var(--sub-text);
            letter-spacing: 0.03em;
            margin-bottom: 6px;
        }

        .article-list-item .article-title {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--main-text);
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }

        .article-list-item:hover .article-title {
            color: var(--brand);
        }

        .article-list-item .article-excerpt {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.7;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        @media (max-width: 767px) {
            .article-list-item {
                flex-direction: column;
                gap: 12px;
            }
            .article-list-item .list-img {
                width: 100%;
                min-width: auto;
                aspect-ratio: 16 / 9;
            }
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item.active {
            border-color: var(--brand);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 22px;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 16px;
            font-weight: 700;
            color: var(--main-text);
            text-align: left;
            gap: 16px;
            transition: all var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--brand);
        }

        .faq-arrow {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(242, 107, 29, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
            font-size: 14px;
            color: var(--brand);
        }

        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            background: var(--brand);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: all var(--transition-base);
            padding: 0 22px;
            color: var(--sub-text);
            font-size: 14px;
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
            padding: 0 22px 20px;
        }

        .form-input {
            width: 100%;
            background: var(--night);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 14px 18px;
            font-size: 15px;
            color: var(--main-text);
            transition: all var(--transition-fast);
        }

        .form-input:focus {
            outline: none;
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(242, 107, 29, 0.15), var(--shadow-glow-orange);
        }

        .form-input::placeholder {
            color: rgba(184, 184, 194, 0.6);
        }

        .site-footer {
            background: var(--night);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 1.4fr 1fr 1fr 1fr;
                gap: 24px;
            }
        }

        .footer-brand h3 {
            font-size: 28px;
            font-weight: 900;
            margin-bottom: 12px;
            color: var(--main-text);
        }

        .footer-brand h3 span {
            color: var(--brand);
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-links h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--main-text);
            margin-bottom: 12px;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links ul li {
            margin-bottom: 8px;
        }

        .footer-links ul li a {
            font-size: 14px;
            color: var(--sub-text);
            transition: color var(--transition-fast);
        }

        .footer-links ul li a:hover {
            color: var(--brand);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 13px;
            color: var(--sub-text);
        }

        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }

        .footer-bottom a {
            color: var(--sub-text);
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--brand);
        }

        .stat-card {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            text-align: center;
            transition: all var(--transition-base);
        }

        .stat-card:hover {
            border-color: rgba(242, 107, 29, 0.5);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .stat-card .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--brand);
            line-height: 1.2;
            margin-bottom: 6px;
            font-variant-numeric: tabular-nums;
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--sub-text);
            font-weight: 500;
        }

        .feature-card {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-card);
        }

        .feature-card:hover {
            border-color: rgba(242, 107, 29, 0.5);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .feature-card .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: rgba(242, 107, 29, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
            color: var(--brand);
            border: 1px solid rgba(242, 107, 29, 0.25);
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--main-text);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.75;
        }

        .hero-category {
            position: relative;
            padding: 80px 0 64px;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 11, 15, 0.92) 0%, rgba(11, 11, 15, 0.75) 50%, rgba(11, 11, 15, 0.88) 100%);
            z-index: 1;
        }

        .hero-category .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-category h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--main-text);
            margin-bottom: 16px;
        }

        .hero-category .hero-desc {
            font-size: 16px;
            color: var(--sub-text);
            line-height: 1.8;
            max-width: 650px;
            margin-bottom: 24px;
        }

        @media (min-width: 768px) {
            .hero-category h1 {
                font-size: 48px;
            }
            .hero-category .hero-desc {
                font-size: 17px;
            }
        }

        @media (min-width: 1024px) {
            .hero-category h1 {
                font-size: 56px;
            }
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--sub-text);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--sub-text);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--brand);
        }

        .breadcrumb .sep {
            color: rgba(184, 184, 194, 0.5);
        }

        .breadcrumb .current {
            color: var(--brand);
        }

        .deep-content {
            background: var(--smoke);
            border-left: 4px solid var(--brand);
            border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
            padding: 36px 32px;
            margin-top: 16px;
        }

        .deep-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--main-text);
            margin-bottom: 16px;
            line-height: 1.35;
        }

        .deep-content h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--main-text);
            margin-top: 24px;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .deep-content p {
            font-size: 15px;
            color: var(--sub-text);
            line-height: 1.9;
            margin-bottom: 14px;
        }

        .deep-content ul,
        .deep-content ol {
            margin: 0 0 16px 0;
            padding-left: 24px;
            color: var(--sub-text);
            font-size: 15px;
            line-height: 1.85;
        }

        .deep-content ul li,
        .deep-content ol li {
            margin-bottom: 6px;
        }

        .badge-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.03em;
            background: rgba(242, 107, 29, 0.12);
            color: var(--brand);
            border: 1px solid rgba(242, 107, 29, 0.25);
        }

        .badge-purple {
            background: rgba(108, 59, 244, 0.12);
            color: var(--brand-purple);
            border-color: rgba(108, 59, 244, 0.25);
        }

        .badge-red {
            background: rgba(215, 25, 32, 0.12);
            color: var(--brand-red);
            border-color: rgba(215, 25, 32, 0.25);
        }

        .badge-gold {
            background: rgba(255, 200, 87, 0.12);
            color: var(--brand-gold);
            border-color: rgba(255, 200, 87, 0.25);
        }

/* roulang page: category6 */
:root {
            --brand: #F26B1D;
            --brand-red: #D71920;
            --brand-purple: #6C3BF4;
            --brand-gold: #FFC857;
            --night: #0B0B0F;
            --smoke: #15151A;
            --card: #1D1D26;
            --main-text: #F5F5F7;
            --sub-text: #B8B8C2;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.14);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.45);
            --shadow-card-hover: 0 14px 40px rgba(242, 107, 29, 0.25);
            --shadow-glow-orange: 0 0 20px rgba(242, 107, 29, 0.35);
            --shadow-glow-purple: 0 0 20px rgba(108, 59, 244, 0.35);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1280px;
            --section-pad: 80px;
            --section-pad-mobile: 48px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'system-ui', sans-serif;
            background-color: var(--night);
            color: var(--main-text);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 15px;
            color: var(--main-text);
        }
        .container {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        @media (min-width: 1280px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }
        .section {
            padding-top: var(--section-pad-mobile);
            padding-bottom: var(--section-pad-mobile);
            position: relative;
        }
        @media (min-width: 768px) {
            .section {
                padding-top: var(--section-pad);
                padding-bottom: var(--section-pad);
            }
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(242, 107, 29, 0.12);
            color: var(--brand);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            border: 1px solid rgba(242, 107, 29, 0.25);
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--main-text);
            margin-bottom: 12px;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 38px;
            }
        }
        @media (min-width: 1280px) {
            .section-title {
                font-size: 42px;
            }
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--sub-text);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 720px;
        }
        @media (min-width: 768px) {
            .section-subtitle {
                font-size: 17px;
            }
        }
        .masthead-logo {
            font-size: 28px;
            font-weight: 900;
            letter-spacing: -0.01em;
            color: var(--main-text);
            white-space: nowrap;
            line-height: 1.1;
        }
        @media (min-width: 768px) {
            .masthead-logo {
                font-size: 32px;
            }
        }
        @media (min-width: 1280px) {
            .masthead-logo {
                font-size: 36px;
            }
        }
        .masthead-logo span {
            color: var(--brand);
        }
        .masthead-nav {
            display: none;
            align-items: center;
            gap: 0;
            flex-wrap: nowrap;
        }
        @media (min-width: 1024px) {
            .masthead-nav {
                display: flex;
            }
        }
        .masthead-nav .nav-item {
            position: relative;
            display: flex;
            align-items: center;
            font-size: 14px;
            font-weight: 500;
            color: var(--sub-text);
            padding: 6px 10px;
            transition: color var(--transition-fast);
            white-space: nowrap;
            border-left: 1px solid var(--border-subtle);
        }
        .masthead-nav .nav-item:first-child {
            border-left: none;
        }
        .masthead-nav .nav-item:hover {
            color: var(--main-text);
        }
        .masthead-nav .nav-item.active {
            color: var(--brand);
        }
        .masthead-nav .nav-item.active::after {
            content: '';
            position: absolute;
            bottom: -14px;
            left: 10px;
            right: 10px;
            height: 2px;
            background: var(--brand);
            border-radius: 2px;
        }
        .hamburger-btn {
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }
        @media (min-width: 1024px) {
            .hamburger-btn {
                display: none;
            }
        }
        .hamburger-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--main-text);
            border-radius: 2px;
            transition: transform var(--transition-fast), opacity var(--transition-fast);
        }
        .hamburger-btn.active span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }
        .hamburger-btn.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger-btn.active span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 16px 0 20px;
            background: var(--smoke);
            border-bottom: 1px solid var(--border-subtle);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-item {
            padding: 12px 0;
            font-size: 15px;
            font-weight: 500;
            color: var(--sub-text);
            border-bottom: 1px solid var(--border-subtle);
            transition: color var(--transition-fast);
        }
        .mobile-menu .nav-item:hover {
            color: var(--main-text);
        }
        .mobile-menu .nav-item.active {
            color: var(--brand);
            font-weight: 600;
        }
        .hero-category {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            min-height: 420px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 11, 15, 0.92) 0%, rgba(11, 11, 15, 0.75) 45%, rgba(108, 59, 244, 0.25) 100%);
            z-index: 1;
        }
        .hero-category::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--brand), transparent);
            z-index: 2;
        }
        .hero-category .hero-inner {
            position: relative;
            z-index: 3;
            padding: 80px 0;
        }
        .featured-card {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            box-shadow: var(--shadow-card);
        }
        .featured-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(242, 107, 29, 0.35);
        }
        .list-card {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }
        @media (min-width: 768px) {
            .list-card {
                flex-direction: row;
                align-items: stretch;
            }
        }
        .list-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(242, 107, 29, 0.3);
        }
        .list-card .list-card-img {
            flex-shrink: 0;
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
        }
        @media (min-width: 768px) {
            .list-card .list-card-img {
                width: 240px;
                aspect-ratio: auto;
                min-height: 100%;
            }
        }
        .list-card .list-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .list-card:hover .list-card-img img {
            transform: scale(1.04);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            background: var(--brand);
            color: #ffffff;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-md);
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            box-shadow: var(--shadow-glow-orange);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--brand-red);
            box-shadow: 0 0 30px rgba(215, 25, 32, 0.4);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 26px;
            background: rgba(255, 255, 255, 0.04);
            color: var(--main-text);
            font-size: 15px;
            font-weight: 500;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-strong);
            transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
            white-space: nowrap;
        }
        .btn-ghost:hover {
            border-color: var(--brand);
            background: rgba(242, 107, 29, 0.08);
            color: var(--brand);
        }
        .btn-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--brand);
            font-size: 14px;
            font-weight: 600;
            transition: color var(--transition-fast), gap var(--transition-fast);
        }
        .btn-link:hover {
            color: var(--brand-gold);
            gap: 10px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .badge-orange {
            background: rgba(242, 107, 29, 0.15);
            color: var(--brand);
            border: 1px solid rgba(242, 107, 29, 0.3);
        }
        .badge-purple {
            background: rgba(108, 59, 244, 0.15);
            color: var(--brand-purple);
            border: 1px solid rgba(108, 59, 244, 0.3);
        }
        .badge-red {
            background: rgba(215, 25, 32, 0.15);
            color: var(--brand-red);
            border: 1px solid rgba(215, 25, 32, 0.3);
        }
        .badge-gold {
            background: rgba(255, 200, 87, 0.15);
            color: var(--brand-gold);
            border: 1px solid rgba(255, 200, 87, 0.3);
        }
        .article-date {
            font-size: 13px;
            color: var(--sub-text);
            letter-spacing: 0.02em;
        }
        .article-title {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--main-text);
            margin: 8px 0;
            transition: color var(--transition-fast);
        }
        .list-card:hover .article-title {
            color: var(--brand);
        }
        .article-summary {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.75;
            margin-bottom: 12px;
        }
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .faq-item.active {
            border-color: var(--brand);
            box-shadow: 0 4px 16px rgba(242, 107, 29, 0.15);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 700;
            color: var(--main-text);
            cursor: pointer;
            transition: color var(--transition-fast);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--brand);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--border-strong);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            color: var(--sub-text);
            transition: transform 0.3s ease, background var(--transition-fast), color var(--transition-fast);
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--brand);
            color: #fff;
            border-color: var(--brand);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 20px;
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding-bottom: 18px;
        }
        .cta-section {
            background: linear-gradient(160deg, var(--smoke) 0%, var(--night) 60%, var(--card) 100%);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(242, 107, 29, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -15%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(108, 59, 244, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .form-input {
            width: 100%;
            padding: 14px 16px;
            background: rgba(11, 11, 15, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            color: var(--main-text);
            font-size: 15px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .form-input::placeholder {
            color: rgba(184, 184, 194, 0.5);
        }
        .form-input:focus {
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(242, 107, 29, 0.2), var(--shadow-glow-orange);
            outline: none;
        }
        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--main-text);
            margin-bottom: 6px;
        }
        .site-footer {
            background: #08080C;
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
            position: relative;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 1.2fr 1fr 1fr 1fr;
                gap: 24px;
            }
        }
        .footer-brand h3 {
            font-size: 24px;
            font-weight: 900;
            color: var(--main-text);
            margin-bottom: 12px;
        }
        .footer-brand h3 span {
            color: var(--brand);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.75;
        }
        .footer-links h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--main-text);
            margin-bottom: 12px;
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--sub-text);
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--brand);
        }
        .footer-bottom {
            display: flex;
            flex-direction: column;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid var(--border-subtle);
            font-size: 13px;
            color: var(--sub-text);
        }
        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }
        .footer-bottom a {
            color: var(--sub-text);
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: var(--brand);
        }
        .strategy-metric-card {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            text-align: center;
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .strategy-metric-card:hover {
            transform: translateY(-3px);
            border-color: rgba(242, 107, 29, 0.35);
            box-shadow: var(--shadow-card-hover);
        }
        .strategy-metric-value {
            font-size: 34px;
            font-weight: 700;
            color: var(--brand);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .strategy-metric-label {
            font-size: 13px;
            color: var(--sub-text);
            margin-top: 6px;
        }
        .step-card {
            background: var(--card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            position: relative;
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .step-card:hover {
            transform: translateY(-3px);
            border-color: rgba(242, 107, 29, 0.3);
            box-shadow: var(--shadow-card-hover);
        }
        .step-number {
            font-size: 40px;
            font-weight: 900;
            color: rgba(242, 107, 29, 0.2);
            line-height: 1;
            margin-bottom: 16px;
        }
        .step-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--main-text);
            margin-bottom: 8px;
        }
        .step-desc {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.75;
        }
        .cat-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 16px;
            background: rgba(242, 107, 29, 0.15);
            border: 1px solid rgba(242, 107, 29, 0.3);
            border-radius: 999px;
            color: var(--brand);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.04em;
        }
        .cat-hero-title {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--main-text);
            margin: 16px 0;
        }
        @media (min-width: 768px) {
            .cat-hero-title {
                font-size: 52px;
            }
        }
        @media (min-width: 1280px) {
            .cat-hero-title {
                font-size: 58px;
            }
        }
        .cat-hero-desc {
            font-size: 16px;
            color: var(--sub-text);
            line-height: 1.8;
            max-width: 640px;
        }
        @media (min-width: 768px) {
            .cat-hero-desc {
                font-size: 17px;
            }
        }
        .orb-decoration {
            position: absolute;
            border-radius: 50%;
            border: 1px solid rgba(242, 107, 29, 0.15);
            pointer-events: none;
            animation: pulse-slow 4s ease-in-out infinite;
        }
        @keyframes pulse-slow {
            0%,
            100% {
                transform: scale(1);
                opacity: 0.4;
            }
            50% {
                transform: scale(1.08);
                opacity: 0.7;
            }
        }
        .signal-line {
            position: absolute;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(242, 107, 29, 0.3), transparent);
            pointer-events: none;
        }
        .tag-outline {
            display: inline-flex;
            align-items: center;
            padding: 3px 10px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 0.04em;
            border: 1px solid var(--border-strong);
            color: var(--sub-text);
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border-width: 0;
        }