/* roulang page: index */
:root {
            --color-primary: #0B5ED7;
            --color-primary-soft: #EAF2FE;
            --color-accent: #F5B041;
            --color-bg: #F6F8FB;
            --color-surface: #FFFFFF;
            --color-text: #1A2533;
            --color-muted: #5B6B7B;
            --color-border: #DCE3EA;
            --color-success: #2E9E6B;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --shadow-card: 0 6px 20px rgba(11, 30, 60, 0.06);
            --shadow-hover: 0 12px 32px rgba(11, 30, 60, 0.12);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Inter', 'Roboto', sans-serif;
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        ::selection {
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }
        .container-site {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section-gap {
            padding: 80px 0;
        }
        @media (max-width: 767px) {
            .section-gap {
                padding: 48px 0;
            }
        }
        .card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, transform 0.25s ease;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 32px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: #0a54c4;
            box-shadow: 0 4px 12px rgba(11, 94, 215, 0.25);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 32px;
            background: #fff;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: var(--color-primary-soft);
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }
        .btn-secondary:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
        }
        .badge-accent {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            background: rgba(245, 176, 65, 0.15);
            color: #b9770a;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            line-height: 1.4;
        }
        .badge-success {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            background: rgba(46, 158, 107, 0.12);
            color: var(--color-success);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            line-height: 1.4;
        }
        .star-pattern {
            background-image: radial-gradient(rgba(11, 94, 215, 0.04) 1px, transparent 1px);
            background-size: 24px 24px;
        }
        .star-pattern-dark {
            background-image: radial-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px);
            background-size: 24px 24px;
        }
        .sidebar {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: 240px;
            background: var(--color-surface);
            border-right: 1px solid var(--color-border);
            z-index: 50;
            display: flex;
            flex-direction: column;
        }
        .logo-area {
            height: 72px;
            display: flex;
            align-items: center;
            padding: 0 24px;
            border-bottom: 1px solid var(--color-border);
            flex-shrink: 0;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--color-primary);
        }
        .sidebar-nav {
            padding: 16px 12px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 44px;
            padding: 0 16px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            transition: all 0.2s ease;
            position: relative;
        }
        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--color-muted);
            transition: color 0.2s;
        }
        .nav-item:hover {
            background: var(--color-primary-soft);
        }
        .nav-item.active {
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 20px;
            background: var(--color-primary);
            border-radius: 0 3px 3px 0;
        }
        .nav-item.active i {
            color: var(--color-primary);
        }
        .sidebar-footer {
            padding: 16px 24px;
            border-top: 1px solid var(--color-border);
            font-size: 12px;
            color: var(--color-muted);
            line-height: 1.8;
        }
        .sidebar-footer i {
            width: 16px;
            margin-right: 4px;
            font-size: 12px;
        }
        .main-wrapper {
            margin-left: 240px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .mobile-header {
            position: sticky;
            top: 0;
            z-index: 40;
            height: 60px;
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            left: -300px;
            width: 280px;
            height: 100%;
            background: var(--color-surface);
            z-index: 100;
            transition: left 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .mobile-drawer.open {
            left: 0;
        }
        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 90;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }
        .drawer-overlay.open {
            opacity: 1;
            visibility: visible;
        }
        body.drawer-open {
            overflow: hidden;
        }
        .drawer-header {
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            border-bottom: 1px solid var(--color-border);
        }
        .drawer-close {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-muted);
            transition: background 0.2s;
        }
        .drawer-close:hover {
            background: var(--color-bg);
        }
        .drawer-nav {
            padding: 16px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .drawer-nav .nav-item {
            height: 48px;
        }
        .hero-section {
            background: linear-gradient(135deg, var(--color-primary-soft) 0%, #f8fbff 55%, #fff 100%);
            position: relative;
            overflow: hidden;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
            padding: 72px 0 56px;
        }
        .hero-img-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            border: 6px solid #fff;
            aspect-ratio: 4/3;
        }
        .hero-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 40px;
        }
        .stat-item {
            text-align: left;
        }
        .stat-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-accent);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 13px;
            color: var(--color-muted);
            margin-top: 4px;
        }
        @media (max-width: 1023px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding: 48px 0 40px;
            }
            .hero-img-wrap {
                max-width: 560px;
            }
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 767px) {
            .hero-section {
                padding-top: 20px;
            }
            .hero-grid {
                padding: 32px 0 32px;
            }
            .stat-num {
                font-size: 24px;
            }
        }
        .features-section {
            background: var(--color-surface);
        }
        .features-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-top: 48px;
        }
        .features-grid .feature-card:nth-child(odd) {
            transform: translateX(0);
        }
        .features-grid .feature-card:nth-child(even) {
            transform: translateX(24px);
        }
        @media (max-width: 767px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
                margin-top: 32px;
            }
            .features-grid .feature-card:nth-child(even) {
                transform: none;
            }
        }
        .feature-card {
            display: flex;
            gap: 20px;
            padding: 28px 24px;
            align-items: flex-start;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            flex-shrink: 0;
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .feature-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-muted);
        }
        .feature-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-primary);
            font-size: 14px;
            font-weight: 600;
            margin-top: 12px;
            transition: gap 0.2s;
        }
        .feature-link:hover {
            gap: 10px;
        }
        .scenarios-section {
            background: var(--color-bg);
        }
        .scenario-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            margin-bottom: 64px;
        }
        .scenario-row:last-child {
            margin-bottom: 0;
        }
        .scenario-row.reverse .scenario-img {
            order: 2;
        }
        .scenario-row.reverse .scenario-content {
            order: 1;
        }
        .scenario-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 8px solid #fff;
            box-shadow: var(--shadow-card);
            aspect-ratio: 16/10;
        }
        .scenario-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .scenario-content h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .scenario-content p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--color-muted);
            margin-bottom: 20px;
        }
        .scenario-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        @media (max-width: 767px) {
            .scenario-row {
                grid-template-columns: 1fr;
                gap: 24px;
                margin-bottom: 40px;
            }
            .scenario-row.reverse .scenario-img {
                order: 0;
            }
            .scenario-row.reverse .scenario-content {
                order: 1;
            }
            .scenario-content h3 {
                font-size: 19px;
            }
        }
        .cases-section {
            background: var(--color-surface);
        }
        .cases-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            margin-top: 48px;
            align-items: stretch;
        }
        .case-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .case-item {
            display: flex;
            gap: 20px;
            padding: 24px;
            align-items: flex-start;
            border-left: 3px solid var(--color-primary-soft);
        }
        .case-item:hover {
            border-left-color: var(--color-primary);
        }
        .case-metric {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-accent);
            white-space: nowrap;
        }
        .case-item h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .case-item p {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
        }
        .case-metric-label {
            font-size: 13px;
            color: var(--color-muted);
        }
        .case-featured {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }
        .case-featured img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .case-featured-body {
            padding: 24px;
            background: var(--color-surface);
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        @media (max-width: 767px) {
            .cases-layout {
                grid-template-columns: 1fr;
                gap: 32px;
                margin-top: 32px;
            }
            .case-item {
                flex-direction: column;
            }
        }
        .pricing-section {
            background: var(--color-bg);
        }
        .pricing-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-top: 48px;
        }
        .pricing-card {
            padding: 32px 28px;
            position: relative;
            border: 2px solid transparent;
        }
        .pricing-card.featured {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-hover);
        }
        .pricing-card.featured:hover {
            box-shadow: var(--shadow-hover);
        }
        .pricing-tag {
            position: absolute;
            top: 16px;
            right: 16px;
        }
        .pricing-name {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .pricing-desc {
            font-size: 14px;
            color: var(--color-muted);
            margin-bottom: 20px;
        }
        .pricing-price {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-accent);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .pricing-price .unit {
            font-size: 16px;
            font-weight: 500;
            color: var(--color-muted);
        }
        .pricing-price-label {
            font-size: 13px;
            color: var(--color-muted);
            margin-bottom: 20px;
        }
        .pricing-list {
            list-style: none;
            margin-bottom: 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .pricing-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.5;
        }
        .pricing-list li i {
            color: var(--color-success);
            margin-top: 4px;
            font-size: 13px;
        }
        .pricing-wide {
            grid-column: 1 / -1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 32px;
            background: var(--color-primary-soft);
            border-radius: var(--radius-md);
        }
        @media (max-width: 767px) {
            .pricing-grid {
                grid-template-columns: 1fr;
                gap: 20px;
                margin-top: 32px;
            }
            .pricing-wide {
                flex-direction: column;
                gap: 16px;
                text-align: center;
            }
        }
        .faq-section {
            background: var(--color-surface);
        }
        .faq-list {
            max-width: 800px;
            margin: 48px auto 0;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            padding: 0 4px;
            transition: color 0.2s;
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            color: var(--color-text);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question i {
            transition: transform 0.3s;
            color: var(--color-muted);
            font-size: 14px;
            flex-shrink: 0;
            margin-left: 16px;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 4px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-muted);
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 4px 20px;
        }
        .news-section {
            background: #F0F3F6;
        }
        .news-layout {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 40px;
            margin-top: 48px;
            align-items: start;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-card {
            display: flex;
            gap: 20px;
            padding: 24px;
            align-items: flex-start;
        }
        .news-card .news-content {
            flex: 1;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 8px;
            flex-wrap: wrap;
        }
        .news-meta .badge-tag {
            font-size: 12px;
            padding: 2px 10px;
        }
        .news-date {
            font-size: 13px;
            color: var(--color-muted);
        }
        .news-card h3 {
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 6px;
        }
        .news-card h3 a:hover {
            color: var(--color-primary);
        }
        .news-excerpt {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .news-full {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .news-full:hover {
            gap: 10px;
        }
        .news-side {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-side-card {
            padding: 24px;
            border-radius: var(--radius-md);
            background: var(--color-surface);
            box-shadow: var(--shadow-card);
        }
        .news-side-card .nav-item {
            height: 44px;
            border-radius: 10px;
            padding: 0 12px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
        }
        .news-side-card .nav-item:hover {
            background: var(--color-primary-soft);
        }
        .news-side-card .nav-item i {
            width: 20px;
            text-align: center;
            color: var(--color-primary);
        }
        .news-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--color-muted);
        }
        .news-empty i {
            font-size: 48px;
            margin-bottom: 16px;
            color: var(--color-border);
        }
        @media (max-width: 767px) {
            .news-layout {
                grid-template-columns: 1fr;
                gap: 24px;
                margin-top: 32px;
            }
            .news-card {
                flex-direction: column;
                padding: 20px;
            }
        }
        .cta-section {
            background: var(--color-primary);
            position: relative;
            overflow: hidden;
        }
        .cta-inner {
            padding: 64px 24px;
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .cta-brand {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            letter-spacing: 2px;
            margin-bottom: 12px;
        }
        .cta-title {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
            margin-bottom: 16px;
        }
        .cta-sub {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 40px;
            background: #fff;
            color: var(--color-primary);
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 700;
            transition: all 0.2s;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
        }
        .cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }
        @media (max-width: 767px) {
            .cta-inner {
                padding: 48px 20px;
            }
            .cta-title {
                font-size: 24px;
            }
        }
        .footer {
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-text {
            font-size: 18px;
            margin-bottom: 12px;
            display: block;
        }
        .footer-desc {
            font-size: 13px;
            color: var(--color-muted);
            line-height: 1.7;
            max-width: 240px;
        }
        .footer-col h4 {
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--color-text);
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col a {
            font-size: 13px;
            color: var(--color-muted);
            transition: color 0.2s;
        }
        .footer-col a:hover {
            color: var(--color-primary);
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-muted);
        }
        .footer-contact i {
            color: var(--color-primary);
            width: 16px;
            font-size: 13px;
        }
        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 12px;
            color: var(--color-muted);
        }
        @media (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 767px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        .section-header {
            margin-bottom: 24px;
        }
        .section-header .section-eyebrow {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 8px;
            display: block;
        }
        .section-header h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.4;
        }
        .section-header p {
            font-size: 15px;
            color: var(--color-muted);
            margin-top: 8px;
            max-width: 640px;
            line-height: 1.7;
        }
        .section-divider {
            width: 100%;
            height: 1px;
            background: var(--color-border);
        }
        .text-gradient {
            background: linear-gradient(90deg, var(--color-primary), #3a7bd5);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .img-overlay {
            position: relative;
        }
        .img-overlay::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(0, 0, 0, 0.15) 100%);
            border-radius: inherit;
            pointer-events: none;
        }
        @media (max-width: 767px) {
            .main-wrapper {
                margin-left: 0;
            }
            .hero-grid .hero-img-wrap {
                display: none;
            }
        }
        @media (min-width: 768px) {
            .mobile-header {
                display: none;
            }
        }
        .visibility-hidden {
            visibility: hidden;
            width: 0;
            height: 0;
            position: absolute;
            overflow: hidden;
        }
        .badge-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-accent);
            display: inline-block;
            margin-right: 4px;
        }

/* roulang page: category1 */
:root {
            --color-primary: #0B5ED7;
            --color-primary-soft: #EAF2FE;
            --color-accent: #F5B041;
            --color-bg: #F6F8FB;
            --color-surface: #FFFFFF;
            --color-text: #1A2533;
            --color-muted: #5B6B7B;
            --color-border: #DCE3EA;
            --color-success: #2E9E6B;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --shadow-card: 0 6px 20px rgba(11, 30, 60, 0.06);
            --shadow-hover: 0 12px 32px rgba(11, 30, 60, 0.12);
            --container-max: 1200px;
            --section-space: 80px;
            --section-space-mobile: 48px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--color-bg);
            color: var(--color-text);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", sans-serif;
            font-size: 15px;
            line-height: 26px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }

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

        button,
        input {
            font-family: inherit;
        }

        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 240px;
            height: 100vh;
            background: var(--color-surface);
            border-right: 1px solid var(--color-border);
            display: flex;
            flex-direction: column;
            z-index: 50;
            transition: transform .3s ease, box-shadow .3s ease;
        }

        .main-wrap {
            flex: 1;
            margin-left: 240px;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .main-content {
            flex: 1;
            padding-bottom: 0;
        }

        .container-site {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-gap {
            padding-top: var(--section-space);
            padding-bottom: var(--section-space);
        }

        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            padding: 20px 24px;
            letter-spacing: -0.3px;
        }

        .logo-link:hover {
            color: var(--color-text);
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--color-primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
        }

        .logo-text span {
            color: var(--color-primary);
        }

        .sidebar-nav {
            padding: 12px 16px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 44px;
            padding: 0 14px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            position: relative;
            transition: background .2s ease;
        }

        .nav-item i {
            width: 20px;
            text-align: center;
            color: var(--color-muted);
            font-size: 14px;
        }

        .nav-item:hover {
            background: var(--color-primary-soft);
        }

        .nav-item.active {
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-weight: 600;
        }

        .nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 10px;
            bottom: 10px;
            width: 3px;
            border-radius: 999px;
            background: var(--color-primary);
        }

        .nav-item.active i {
            color: var(--color-primary);
        }

        .sidebar-foot {
            margin-top: auto;
            padding: 16px 24px;
            font-size: 12px;
            line-height: 20px;
            color: var(--color-muted);
            border-top: 1px solid var(--color-border);
        }

        .sidebar-foot p {
            margin: 4px 0;
        }

        .sidebar-foot i {
            width: 16px;
            margin-right: 4px;
            color: var(--color-muted);
        }

        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 40;
            height: 60px;
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
        }

        .burger-btn {
            width: 42px;
            height: 42px;
            border: 1px solid var(--color-border);
            border-radius: 10px;
            background: var(--color-surface);
            color: var(--color-text);
            font-size: 18px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background .2s;
        }

        .burger-btn:hover {
            background: var(--color-primary-soft);
        }

        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.6);
            z-index: 45;
            opacity: 0;
            pointer-events: none;
            transition: opacity .3s ease;
        }

        .category-hero {
            background: linear-gradient(135deg, var(--color-primary-soft) 0%, rgba(255, 255, 255, 0.4) 70%);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--color-border);
        }

        .category-hero h1 {
            font-size: 32px;
            line-height: 44px;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin: 16px 0 8px;
        }

        .category-hero .hero-sub {
            font-size: 16px;
            line-height: 28px;
            color: var(--color-muted);
            max-width: 560px;
            margin: 8px 0 0;
        }

        .card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            padding: 24px;
            transition: box-shadow .25s ease, transform .25s ease;
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .card.p-0 {
            padding: 0;
        }

        .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-radius: var(--radius-md);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 32px;
            background: var(--color-primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: background .2s, box-shadow .2s, transform .1s;
        }

        .btn-primary:hover {
            background: #0a4eb8;
            box-shadow: 0 4px 12px rgba(11, 94, 215, 0.25);
            color: #fff;
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 32px;
            background: var(--color-surface);
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: background .2s, color .2s;
        }

        .btn-secondary:hover {
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }

        .btn-primary:focus-visible,
        .btn-secondary:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
        }

        .tag-accent {
            background: rgba(245, 176, 65, 0.14);
            color: #b1741e;
        }

        .section-title-wrap {
            margin-bottom: 32px;
        }

        .section-title-wrap h2 {
            font-size: 24px;
            line-height: 32px;
            font-weight: 700;
            letter-spacing: -0.3px;
            margin: 0 0 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .section-title-wrap h2 i {
            color: var(--color-primary);
            font-size: 20px;
        }

        .section-title-wrap p {
            color: var(--color-muted);
            margin: 0;
            font-size: 14px;
        }

        .link-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-primary);
            font-size: 14px;
            font-weight: 600;
            margin-top: 16px;
            transition: gap .2s ease;
        }

        .link-more:hover {
            gap: 10px;
            color: #0a4eb8;
        }

        .schedule-list {
            list-style: none;
            padding: 0;
            margin: 12px 0 0;
        }

        .schedule-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 0;
            border-bottom: 1px solid var(--color-border);
            font-size: 14px;
        }

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

        .schedule-date {
            min-width: 56px;
            text-align: center;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            border-radius: 8px;
            padding: 6px 8px;
            font-size: 13px;
            font-weight: 600;
            line-height: 18px;
        }

        .schedule-info {
            flex: 1;
            min-width: 0;
        }

        .schedule-info strong {
            display: block;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 2px;
        }

        .schedule-info span {
            font-size: 13px;
            color: var(--color-muted);
        }

        .stat-highlight {
            color: var(--color-accent);
            font-size: 28px;
            font-weight: 700;
            line-height: 1.2;
        }

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

        .scene-item {
            display: flex;
            gap: 16px;
            padding: 20px;
            border-radius: var(--radius-md);
            background: var(--color-surface);
            box-shadow: var(--shadow-card);
            margin-bottom: 16px;
            transition: box-shadow .25s ease, transform .25s ease;
        }

        .scene-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .scene-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

        .scene-item h3 {
            font-size: 16px;
            font-weight: 600;
            margin: 0 0 4px;
        }

        .scene-item p {
            font-size: 14px;
            line-height: 24px;
            color: var(--color-muted);
            margin: 0;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .process-step {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            padding: 28px 24px;
            position: relative;
            transition: box-shadow .25s ease, transform .25s ease;
        }

        .process-step:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .process-num {
            font-size: 13px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .process-step h3 {
            font-size: 16px;
            font-weight: 600;
            margin: 0 0 8px;
        }

        .process-step p {
            font-size: 14px;
            line-height: 24px;
            color: var(--color-muted);
            margin: 0;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border);
            background: var(--color-surface);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--color-border);
        }

        .faq-q {
            min-height: 52px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 14px 16px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            transition: background .2s;
        }

        .faq-q:hover {
            background: var(--color-primary-soft);
        }

        .faq-q i {
            color: var(--color-primary);
            transition: transform .3s ease;
            flex-shrink: 0;
        }

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

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .35s ease;
        }

        .faq-item.active .faq-a {
            max-height: 420px;
            padding: 16px 16px 20px;
        }

        .faq-a p {
            margin: 0;
            font-size: 14px;
            line-height: 26px;
            color: var(--color-muted);
        }

        .cta-light {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            border-top: 4px solid var(--color-primary);
            padding: 36px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .cta-light h2 {
            font-size: 22px;
            font-weight: 700;
            margin: 0 0 6px;
        }

        .cta-light p {
            color: var(--color-muted);
            margin: 0;
            font-size: 14px;
        }

        .footer {
            background: #F0F3F6;
            border-top: 1px solid var(--color-border);
            margin-top: 40px;
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1.2fr;
            gap: 32px;
        }

        .footer-brand .logo-link {
            padding: 0;
            margin-bottom: 16px;
        }

        .footer-desc {
            font-size: 13px;
            line-height: 22px;
            color: var(--color-muted);
            max-width: 260px;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 13px;
            font-weight: 600;
            margin: 0 0 14px;
            color: var(--color-text);
        }

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

        .footer-col li {
            font-size: 13px;
            line-height: 30px;
            color: var(--color-muted);
        }

        .footer-col a {
            color: var(--color-muted);
            transition: color .2s;
        }

        .footer-col a:hover {
            color: var(--color-primary);
        }

        .footer-bottom {
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--color-muted);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr 1fr;
            }

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 767px) {
            .sidebar {
                transform: translateX(-100%);
                width: 280px;
                box-shadow: var(--shadow-hover);
            }

            .sidebar.open {
                transform: translateX(0);
            }

            .main-wrap {
                margin-left: 0;
            }

            .mobile-header {
                display: flex;
            }

            .drawer-overlay.open {
                opacity: 1;
                pointer-events: auto;
            }

            .category-hero {
                padding: 32px 0 28px;
            }

            .section-gap {
                padding-top: var(--section-space-mobile);
                padding-bottom: var(--section-space-mobile);
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .process-grid {
                grid-template-columns: 1fr;
            }

            .cta-light {
                flex-direction: column;
                align-items: flex-start;
            }

            .container-site {
                padding-left: 20px;
                padding-right: 20px;
            }

            .category-hero h1 {
                font-size: 28px;
                line-height: 38px;
            }
        }

        @media (max-width: 520px) {
            .process-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }

            .schedule-list li {
                flex-direction: row;
                flex-wrap: nowrap;
            }

            .schedule-date {
                min-width: 48px;
                padding: 4px 6px;
                font-size: 12px;
            }

            .cta-light {
                padding: 28px 20px;
            }

            .btn-primary,
            .btn-secondary {
                width: 100%;
                padding: 0 20px;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #0B5ED7;
            --color-primary-soft: #EAF2FE;
            --color-accent: #F5B041;
            --color-bg: #F6F8FB;
            --color-surface: #ffffff;
            --color-text: #1A2533;
            --color-muted: #5B6B7B;
            --color-border: #DCE3EA;
            --color-success: #2E9E6B;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --shadow-card: 0 6px 20px rgba(11, 30, 60, 0.06);
            --shadow-hover: 0 12px 32px rgba(11, 30, 60, 0.12);
            --container-max: 1200px;
            --section-gap: 80px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', sans-serif;
            background-color: var(--color-bg);
            background-image: radial-gradient(rgba(11, 94, 215, 0.035) 1px, transparent 1px);
            background-size: 26px 26px;
            color: var(--color-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        ul,
        ol {
            padding-left: 0;
            list-style: none;
        }
        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }

        /* ===== 容器 ===== */
        .container-site {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Logo ===== */
        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--color-primary);
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 21px;
            font-weight: 800;
            color: var(--color-text);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--color-primary);
        }

        /* ===== App Shell ===== */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 240px;
            height: 100vh;
            background: var(--color-surface);
            border-right: 1px solid var(--color-border);
            display: flex;
            flex-direction: column;
            padding: 24px 16px 16px;
            z-index: 40;
        }
        .sidebar-logo {
            padding-bottom: 28px;
            border-bottom: 1px solid #EDF1F5;
            margin-bottom: 20px;
        }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 44px;
            padding: 0 14px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            transition: background .2s, color .2s;
            position: relative;
        }
        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--color-muted);
            transition: color .2s;
        }
        .nav-item:hover {
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }
        .nav-item:hover i {
            color: var(--color-primary);
        }
        .nav-item.active {
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-item.active::before {
            content: '';
            position: absolute;
            left: -16px;
            top: 20%;
            height: 60%;
            width: 3px;
            border-radius: 0 3px 3px 0;
            background: var(--color-primary);
        }
        .nav-item.active i {
            color: var(--color-primary);
        }
        .sidebar-footer {
            border-top: 1px solid #EDF1F5;
            padding-top: 16px;
            font-size: 12px;
            color: var(--color-muted);
            line-height: 1.8;
        }
        .sidebar-footer div {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 4px;
        }
        .sidebar-footer i {
            width: 16px;
            text-align: center;
            color: var(--color-primary);
        }
        .sidebar-copy {
            margin-top: 10px;
            padding-top: 10px;
            border-top: 1px dashed var(--color-border);
            font-size: 11px;
            color: #8A9BA9;
            line-height: 1.7;
        }
        .main-content {
            margin-left: 240px;
            flex: 1;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }
        .main-content main {
            flex: 1;
        }

        /* ===== 移动端顶部栏 ===== */
        .mobile-topbar {
            display: none;
            height: 60px;
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            position: sticky;
            top: 0;
            z-index: 45;
        }
        .mobile-menu-btn {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-size: 17px;
            transition: background .2s;
        }
        .mobile-menu-btn:hover {
            background: #DCEAFE;
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            left: 0;
            width: 280px;
            height: 100vh;
            background: var(--color-surface);
            z-index: 60;
            transform: translateX(-100%);
            transition: transform .3s ease;
            padding: 20px 16px;
            display: flex;
            flex-direction: column;
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 20px;
            border-bottom: 1px solid #EDF1F5;
            margin-bottom: 16px;
        }
        .drawer-close {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: var(--color-bg);
            color: var(--color-text);
            font-size: 16px;
            transition: background .2s;
        }
        .drawer-close:hover {
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }
        .drawer-nav .nav-item {
            height: 48px;
            margin-bottom: 4px;
        }
        .mobile-mask {
            position: fixed;
            inset: 0;
            background: rgba(15, 30, 50, 0.55);
            z-index: 55;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s, visibility .3s;
        }
        .mobile-mask.open {
            opacity: 1;
            visibility: visible;
        }

        /* ===== 文章动态 TDK 区 ===== */
        .article-hero {
            margin: 32px 0 24px;
            padding: 48px 40px;
            border-radius: var(--radius-lg);
            background:
                linear-gradient(135deg, rgba(234, 242, 254, 0.96) 0%, rgba(255, 255, 255, 0.92) 100%),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
        }
        .article-hero h1 {
            font-size: 32px;
            line-height: 44px;
            font-weight: 700;
            letter-spacing: -0.5px;
            color: var(--color-text);
            max-width: 680px;
            margin-bottom: 20px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 13px;
            color: var(--color-muted);
        }
        .meta-item i {
            color: var(--color-primary);
            font-size: 14px;
        }
        .meta-item a {
            color: var(--color-muted);
            transition: color .2s;
        }
        .meta-item a:hover {
            color: var(--color-primary);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--color-muted);
            margin-bottom: 24px;
        }
        .breadcrumb a {
            color: var(--color-muted);
            transition: color .2s;
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb i {
            font-size: 10px;
            color: #AAB6C4;
        }
        .breadcrumb span {
            color: var(--color-text);
            max-width: 260px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ===== 正文 ===== */
        .article-body {
            max-width: 760px;
            margin: 0 auto;
            padding: 16px 0 40px;
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-text);
        }
        .article-body article h2 {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.4;
            margin-top: 48px;
            margin-bottom: 16px;
            color: var(--color-text);
        }
        .article-body article h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.5;
            margin-top: 32px;
            margin-bottom: 12px;
            color: var(--color-text);
        }
        .article-body article p {
            font-size: 16px;
            line-height: 1.9;
            margin: 1em 0;
        }
        .article-body article ul {
            margin: 1em 0;
            padding-left: 24px;
            list-style: disc;
        }
        .article-body article ol {
            margin: 1em 0;
            padding-left: 24px;
            list-style: decimal;
        }
        .article-body article li {
            margin-bottom: 8px;
            line-height: 1.8;
        }
        .article-body article blockquote {
            border-left: 4px solid var(--color-primary);
            background: #F0F3F6;
            padding: 16px 20px;
            border-radius: 8px;
            margin: 24px 0;
            color: #3D4A58;
            font-size: 15px;
        }
        .article-body article img {
            border-radius: 12px;
            max-width: 100%;
            height: auto;
            margin: 16px 0;
        }
        .article-body article figure {
            margin: 20px 0;
        }
        .article-body article figcaption {
            font-size: 13px;
            color: var(--color-muted);
            text-align: center;
            margin-top: 8px;
        }
        .article-body article table {
            width: 100%;
            border: 1px solid var(--color-border);
            border-collapse: separate;
            border-radius: 10px;
            overflow: hidden;
            margin: 24px 0;
            font-size: 14px;
        }
        .article-body article th {
            background: var(--color-primary-soft);
            font-weight: 600;
            padding: 12px 16px;
            border-bottom: 1px solid var(--color-border);
            text-align: left;
            color: var(--color-text);
        }
        .article-body article td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--color-border);
        }
        .article-body article tr:last-child td {
            border-bottom: none;
        }
        .article-body article a {
            color: var(--color-primary);
            text-decoration: underline;
        }
        .article-body article pre {
            background: #1E293B;
            color: #E2E8F0;
            padding: 20px;
            border-radius: 10px;
            overflow-x: auto;
            font-size: 14px;
            line-height: 1.7;
            margin: 24px 0;
        }
        .article-body article code {
            background: #F0F3F6;
            color: var(--color-primary);
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 14px;
        }
        .article-body article pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }

        /* ===== 空态 ===== */
        .article-empty {
            text-align: center;
            padding: 80px 24px;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
        }
        .article-empty i {
            font-size: 48px;
            color: #C0CCD9;
        }
        .article-empty p {
            font-size: 18px;
            color: var(--color-muted);
            margin: 16px 0 24px;
        }

        /* ===== 文章底部 ===== */
        .article-footer {
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid var(--color-border);
        }
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 28px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 500;
            border-radius: 999px;
            transition: background .2s, color .2s;
        }
        .tag:hover {
            background: #DCEAFE;
        }
        .prev-next {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .prev-next a {
            color: var(--color-text);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            background: var(--color-bg);
            transition: background .2s, color .2s;
            max-width: 48%;
        }
        .prev-next a:hover {
            color: var(--color-primary);
            background: var(--color-primary-soft);
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            margin: 48px 0 24px;
        }
        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }
        .section-head h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text);
        }
        .section-more {
            color: var(--color-primary);
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color .2s;
        }
        .section-more:hover {
            color: #0A53B8;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .related-card {
            display: flex;
            flex-direction: column;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            color: var(--color-text);
            transition: transform .25s, box-shadow .25s;
        }
        .related-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .related-img {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--color-primary-soft);
        }
        .related-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }
        .related-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.92);
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            padding: 4px 12px;
            backdrop-filter: blur(6px);
        }
        .related-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }
        .related-body h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--color-text);
        }
        .related-body p {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-date {
            font-size: 13px;
            color: #8AA0B4;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .read-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .related-card-wide {
            grid-column: 1 / -1;
            flex-direction: row;
        }
        .related-card-wide .related-img {
            width: 42%;
            aspect-ratio: 16/9;
        }
        .related-card-wide .related-body {
            flex: 1;
            padding: 24px;
        }

        /* ===== 返回入口 ===== */
        .back-entry {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin: 32px 0 48px;
            flex-wrap: wrap;
        }

        /* ===== 按钮 ===== */
        .btn-primary,
        .btn-secondary,
        .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 32px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            text-decoration: none;
            cursor: pointer;
            border: 1px solid transparent;
            transition: background .2s, box-shadow .2s, transform .1s, border-color .2s;
            line-height: 1;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: #0A53B8;
            box-shadow: 0 4px 12px rgba(11, 94, 215, 0.25);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-secondary {
            background: var(--color-surface);
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .btn-secondary:hover {
            background: var(--color-primary-soft);
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }
        .btn-white {
            background: #fff;
            color: var(--color-primary);
            border-color: #fff;
        }
        .btn-white:hover {
            background: var(--color-primary-soft);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
        }
        .btn-white:active {
            transform: scale(0.98);
        }
        .btn-primary:focus-visible,
        .btn-secondary:focus-visible,
        .btn-white:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        /* ===== CTA ===== */
        .article-cta {
            background: var(--color-primary);
            border-radius: var(--radius-lg);
            padding: 48px 32px;
            text-align: center;
            color: #fff;
            margin: 24px 0 64px;
            position: relative;
            overflow: hidden;
        }
        .article-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
            background-size: 22px 22px;
        }
        .article-cta>* {
            position: relative;
            z-index: 1;
        }
        .cta-brand {
            display: block;
            font-size: 14px;
            opacity: 0.85;
            margin-bottom: 12px;
            font-weight: 600;
            letter-spacing: 3px;
        }
        .article-cta h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .article-cta p {
            font-size: 15px;
            opacity: 0.85;
            margin-bottom: 24px;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
            padding: 48px 0 32px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1.2fr;
            gap: 32px;
        }
        .footer-brand .logo-text {
            font-size: 22px;
        }
        .footer-desc {
            font-size: 13px;
            color: var(--color-muted);
            line-height: 1.6;
            margin-top: 12px;
            max-width: 240px;
        }
        .footer-col h4 {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col li {
            margin-bottom: 10px;
            font-size: 13px;
            color: var(--color-muted);
        }
        .footer-col li a {
            color: var(--color-muted);
            transition: color .2s;
        }
        .footer-col li a:hover {
            color: var(--color-primary);
        }
        .footer-col li i {
            width: 18px;
            color: var(--color-primary);
            margin-right: 4px;
        }
        .footer-bottom {
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--color-border);
            text-align: center;
            font-size: 12px;
            color: #8A9BA9;
            line-height: 1.8;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .container-site {
                padding: 0 24px;
            }
            .footer-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .article-hero h1 {
                font-size: 28px;
                line-height: 38px;
            }
        }
        @media (max-width: 768px) {
            .sidebar {
                display: none;
            }
            .mobile-topbar {
                display: flex;
            }
            .main-content {
                margin-left: 0;
            }
            .container-site {
                padding: 0 16px;
            }
            .article-hero {
                margin: 16px 0 20px;
                padding: 28px 20px;
                border-radius: 14px;
            }
            .article-hero h1 {
                font-size: 24px;
                line-height: 34px;
                margin-bottom: 14px;
            }
            .article-meta {
                gap: 10px 14px;
            }
            .breadcrumb {
                font-size: 12px;
                margin-bottom: 16px;
            }
            .article-body {
                padding: 8px 0 28px;
            }
            .article-body article p {
                font-size: 15px;
                line-height: 1.85;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .related-card-wide {
                grid-column: 1 / -1;
                flex-direction: column;
            }
            .related-card-wide .related-img {
                width: 100%;
            }
            .prev-next a {
                max-width: 100%;
                flex: 1;
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .article-cta {
                padding: 36px 20px;
                margin-bottom: 40px;
            }
            .article-cta h3 {
                font-size: 20px;
            }
            .back-entry {
                gap: 12px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .article-hero {
                padding: 24px 16px;
            }
            .article-hero h1 {
                font-size: 21px;
                line-height: 30px;
            }
            .back-entry .btn-primary,
            .back-entry .btn-secondary {
                width: 100%;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #0B5ED7;
            --color-primary-soft: #EAF2FE;
            --color-accent: #F5B041;
            --color-bg: #F6F8FB;
            --color-surface: #FFFFFF;
            --color-text: #1A2533;
            --color-muted: #5B6B7B;
            --color-border: #DCE3EA;
            --color-success: #2E9E6B;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --shadow-card: 0 6px 20px rgba(11,30,60,0.06);
            --shadow-hover: 0 12px 32px rgba(11,30,60,0.12);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background: var(--color-bg);
            color: var(--color-text);
            font-size: 15px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease;
        }

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

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

        input {
            font-family: inherit;
        }

        .container-site {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-gap {
            padding-top: 80px;
            padding-bottom: 80px;
        }

        @media (max-width: 767px) {
            .section-gap {
                padding-top: 48px;
                padding-bottom: 48px;
            }
        }

        /* ===== Logo ===== */
        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            line-height: 1.2;
            color: var(--color-text);
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--color-primary), #0A4CB8);
            color: #fff;
            border-radius: 10px;
            font-size: 16px;
            box-shadow: 0 4px 14px rgba(11, 94, 215, 0.28);
        }

        .logo-text {
            letter-spacing: 0.02em;
        }

        .logo-text span {
            color: var(--color-primary);
        }

        /* ===== 应用壳 ===== */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .sidebar {
            width: 240px;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 100;
            background: var(--color-surface);
            border-right: 1px solid var(--color-border);
            display: flex;
            flex-direction: column;
            padding: 0 16px;
        }

        .sidebar-header {
            height: 72px;
            display: flex;
            align-items: center;
            padding: 0 8px;
            border-bottom: 1px solid var(--color-border);
        }

        .sidebar-nav {
            flex: 1;
            padding-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 44px;
            padding: 0 14px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-muted);
            position: relative;
            transition: background 0.25s, color 0.25s;
        }

        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 15px;
        }

        .nav-item:hover {
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }

        .nav-item.active {
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-weight: 600;
        }

        .nav-item.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 10px;
            bottom: 10px;
            width: 3px;
            border-radius: 0 4px 4px 0;
            background: var(--color-primary);
        }

        .sidebar-foot {
            padding: 16px 8px 20px;
            border-top: 1px solid var(--color-border);
            font-size: 12px;
            color: var(--color-muted);
            line-height: 1.8;
        }

        .sidebar-foot a {
            color: var(--color-primary);
            font-weight: 500;
        }

        .side-copy {
            margin-top: 10px;
            font-size: 12px;
            color: #9AA7B4;
        }

        .main-wrapper {
            flex: 1;
            margin-left: 240px;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .main-content {
            flex: 1;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 移动端顶部栏 ===== */
        .mobile-topbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            display: none;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            z-index: 120;
        }

        .menu-toggle {
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-text);
            border-radius: 8px;
            transition: background 0.2s;
        }

        .menu-toggle:hover {
            background: var(--color-primary-soft);
        }

        .menu-toggle:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        /* ===== 移动抽屉 ===== */
        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(11, 30, 60, 0.5);
            z-index: 130;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s, visibility 0.3s;
        }

        .drawer-overlay.open {
            opacity: 1;
            visibility: visible;
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 280px;
            max-width: 85vw;
            background: var(--color-surface);
            z-index: 140;
            transform: translateX(-100%);
            transition: transform 0.3s ease;
            display: flex;
            flex-direction: column;
            padding: 0 20px;
        }

        .mobile-drawer.open {
            transform: translateX(0);
        }

        .drawer-header {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid var(--color-border);
        }

        .drawer-close {
            width: 36px;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--color-muted);
            border-radius: 8px;
            transition: background 0.2s, color 0.2s;
        }

        .drawer-close:hover {
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }

        .mobile-nav {
            flex: 1;
            padding-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-nav .nav-item {
            height: 48px;
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: 1px solid var(--color-primary);
            transition: background 0.25s, box-shadow 0.25s, transform 0.15s;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: #0A4CB8;
            box-shadow: 0 4px 12px rgba(11, 94, 215, 0.25);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            background: var(--color-surface);
            color: var(--color-primary);
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: 1px solid var(--color-primary);
            transition: background 0.25s, color 0.25s;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: var(--color-primary-soft);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            padding: 24px;
            transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
            border: 1px solid transparent;
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--color-border);
        }

        .card-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            aspect-ratio: 16/9;
            background: var(--color-primary-soft);
        }

        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ===== 标签 ===== */
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.6;
        }

        /* ===== 窄Hero ===== */
        .page-hero {
            background: linear-gradient(135deg, var(--color-primary-soft) 0%, #F8FBFF 100%);
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            padding: 56px 24px 48px;
            position: relative;
            overflow: hidden;
            background-image: radial-gradient(circle at 20% 20%, rgba(11, 94, 215, 0.05) 0%, transparent 40%),
            radial-gradient(circle at 80% 30%, rgba(245, 176, 65, 0.04) 0%, transparent 35%);
        }

        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid rgba(11, 94, 215, 0.08);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            color: var(--color-primary);
            font-weight: 500;
            margin-bottom: 20px;
        }

        .page-hero h1 {
            font-size: 36px;
            line-height: 1.25;
            font-weight: 700;
            letter-spacing: -0.5px;
            color: var(--color-text);
            margin-bottom: 14px;
        }

        .page-hero .hero-sub {
            font-size: 16px;
            color: var(--color-muted);
            max-width: 560px;
            line-height: 1.7;
        }

        @media (max-width: 767px) {
            .page-hero {
                padding: 40px 20px 36px;
                border-radius: 0;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .page-hero .hero-sub {
                font-size: 15px;
            }
        }

        /* ===== 图标步骤 ===== */
        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            position: relative;
        }

        .steps-list::before {
            content: "";
            position: absolute;
            left: 24px;
            top: 56px;
            bottom: 56px;
            width: 2px;
            background: linear-gradient(to bottom, var(--color-primary-soft), var(--color-border));
        }

        .step-item {
            display: flex;
            gap: 24px;
            position: relative;
            padding-bottom: 36px;
        }

        .step-item:last-child {
            padding-bottom: 0;
        }

        .step-num {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-surface);
            border: 2px solid var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            font-weight: 700;
            color: var(--color-primary);
            z-index: 1;
            box-shadow: 0 0 0 6px var(--color-primary-soft);
        }

        .step-content {
            padding-top: 6px;
        }

        .step-content h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .step-content p {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
            max-width: 520px;
        }

        /* ===== 偏位网格 ===== */
        .grid-offset {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .grid-offset .card-wide {
            grid-column: 1 / -1;
        }

        .grid-offset .card-offset-top {
            transform: translateY(-12px);
        }

        @media (max-width: 767px) {
            .grid-offset {
                grid-template-columns: 1fr;
            }
            .grid-offset .card-offset-top {
                transform: none;
            }
        }

        /* ===== FAQ ===== */
        .faq-item {
            border-bottom: 1px solid var(--color-border);
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: 54px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            padding: 14px 4px;
            transition: color 0.25s;
        }

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

        .faq-question:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .faq-question i {
            font-size: 14px;
            color: var(--color-primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-answer-inner {
            padding: 0 4px 18px;
            color: var(--color-muted);
            font-size: 15px;
            line-height: 1.8;
        }

        /* ===== 轻量CTA ===== */
        .cta-light {
            border-top: 3px solid var(--color-primary);
            background: var(--color-surface);
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            box-shadow: var(--shadow-card);
            padding: 40px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .cta-light h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .cta-light p {
            color: var(--color-muted);
            font-size: 15px;
        }

        .cta-light .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        @media (max-width: 767px) {
            .cta-light {
                padding: 28px 20px;
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
            padding: 56px 0 28px;
            margin-top: 48px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1.4fr;
            gap: 32px;
        }

        .footer-brand .footer-desc {
            margin-top: 14px;
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 16px;
        }

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

        .footer-col li {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.6;
        }

        .footer-col a:hover {
            color: var(--color-primary);
        }

        .footer-bottom {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid var(--color-border);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: #9AA7B4;
        }

        @media (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr 1fr;
            }
        }

        @media (max-width: 767px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-brand {
                grid-column: auto;
            }
        }

        /* ===== 响应式导航 ===== */
        @media (max-width: 767px) {
            .sidebar {
                display: none;
            }
            .main-wrapper {
                margin-left: 0;
                padding-top: 60px;
            }
            .mobile-topbar {
                display: flex;
            }
            .main-content {
                padding: 0 20px;
            }
        }

        @media (min-width: 768px) {
            .mobile-topbar,
            .mobile-drawer,
            .drawer-overlay {
                display: none;
            }
        }

        /* ===== 通用区块标题 ===== */
        .section-title {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: var(--color-text);
            line-height: 1.3;
            margin-bottom: 8px;
        }

        .section-sub {
            font-size: 15px;
            color: var(--color-muted);
            margin-bottom: 36px;
            max-width: 600px;
            line-height: 1.7;
        }

        @media (max-width: 767px) {
            .section-title {
                font-size: 24px;
            }
            .section-sub {
                font-size: 14px;
            }
        }

        /* ===== 适用人群 ===== */
        .audience-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .audience-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            background: var(--color-primary-soft);
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-primary);
        }

        .audience-tag i {
            font-size: 13px;
        }

        /* ===== 信息提示条 ===== */
        .tip-bar {
            background: var(--color-primary-soft);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.7;
            border: 1px solid rgba(11, 94, 215, 0.08);
            margin-bottom: 20px;
        }

        .tip-bar i {
            color: var(--color-primary);
            margin-top: 3px;
        }