/* roulang page: index */
:root {
            --primary: #0F5FFF;
            --primary-hover: #0A4BD6;
            --light-blue: #E8F0FE;
            --accent: #00A6A6;
            --bg-light: #F5F7FA;
            --body-text: #172033;
            --muted-text: #5B6B85;
            --border-light: #E8EDF6;
            --footer-dark: #0E1A2B;
            --card-radius: 16px;
            --btn-radius: 12px;
            --shadow-card: 0 4px 16px rgba(15, 95, 255, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(15, 95, 255, 0.12);
            --focus-ring: 3px solid rgba(15, 95, 255, 0.25);
            --section-gap-desktop: 96px;
            --section-gap-mobile: 56px;
            --card-padding: 28px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            color: var(--body-text);
            background: var(--bg-light);
            line-height: 1.7;
            font-size: 15px;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        ::selection {
            background: var(--light-blue);
            color: var(--primary);
        }

        .tabular-nums {
            font-variant-numeric: tabular-nums;
            font-family: 'Segoe UI', 'Helvetica Neue', monospace;
        }

        .container-main {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

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

        @media (max-width: 768px) {
            .section-gap {
                padding-top: var(--section-gap-mobile);
                padding-bottom: var(--section-gap-mobile);
            }
        }

        .card-base {
            background: #FFFFFF;
            border-radius: var(--card-radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
        }

        .card-base:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(15, 95, 255, 0.18);
        }

        .card-base:focus-within {
            outline: var(--focus-ring);
            outline-offset: 2px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: var(--btn-radius);
            padding: 14px 20px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            min-height: 44px;
            min-width: 44px;
            border: 2px solid transparent;
            cursor: pointer;
            transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 4px 12px rgba(15, 95, 255, 0.25);
        }

        .btn-primary:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 3px;
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #FFFFFF;
            color: var(--primary);
            border-radius: var(--btn-radius);
            padding: 14px 20px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            min-height: 44px;
            min-width: 44px;
            border: 2px solid var(--primary);
            cursor: pointer;
            transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease;
            white-space: nowrap;
        }

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

        .btn-secondary:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 3px;
        }

        .btn-secondary:active {
            transform: translateY(1px);
        }

        .badge-tag {
            display: inline-block;
            background: var(--light-blue);
            color: var(--primary);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
        }

        .badge-accent {
            display: inline-block;
            background: rgba(0, 166, 166, 0.1);
            color: var(--accent);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 600;
            line-height: 1.4;
        }

        .badge-gold {
            display: inline-block;
            background: rgba(247, 201, 72, 0.15);
            color: #8B6B00;
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 700;
            line-height: 1.4;
        }

        .badge-gray {
            display: inline-block;
            background: #F0F2F7;
            color: var(--muted-text);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .h1-style {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.5px;
        }

        .h2-style {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.3px;
        }

        .h3-style {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
        }

        @media (max-width: 640px) {
            .h1-style {
                font-size: 26px;
                letter-spacing: -0.3px;
            }
            .h2-style {
                font-size: 22px;
            }
            .h3-style {
                font-size: 16px;
            }
        }

        .hero-bg {
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .hero-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(245, 247, 250, 0.9);
            z-index: 1;
        }

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

        .stat-value {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.1;
            font-family: 'Segoe UI', 'Helvetica Neue', monospace;
            font-variant-numeric: tabular-nums;
            color: var(--primary);
        }

        @media (max-width: 640px) {
            .stat-value {
                font-size: 30px;
            }
        }

        .countdown-bar {
            background: var(--footer-dark);
            color: #FFFFFF;
            border-radius: 12px;
            padding: 12px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .countdown-timer {
            font-family: 'Segoe UI', 'Helvetica Neue', monospace;
            font-variant-numeric: tabular-nums;
            font-size: 22px;
            font-weight: 700;
            color: #F7C948;
            letter-spacing: 2px;
        }

        .desktop-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 268px;
            background: #FFFFFF;
            border-right: 1px solid var(--border-light);
            z-index: 50;
            display: flex;
            flex-direction: column;
            padding: 24px 16px 16px;
            box-shadow: 2px 0 12px rgba(15, 95, 255, 0.03);
        }

        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0 8px 20px;
            border-bottom: 1px solid var(--border-light);
            margin-bottom: 16px;
        }

        .sidebar-logo-text {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }

        .sidebar-nav-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 14px;
            border-radius: 12px;
            color: var(--muted-text);
            font-weight: 500;
            font-size: 15px;
            transition: all 0.2s ease;
            position: relative;
            border-left: 3px solid transparent;
        }

        .sidebar-nav-item:hover {
            background: var(--light-blue);
            color: var(--primary);
            border-left-color: var(--primary);
        }

        .sidebar-nav-item.active {
            background: var(--light-blue);
            color: var(--primary);
            font-weight: 700;
            border-left-color: var(--primary);
        }

        .sidebar-footer {
            margin-top: auto;
            padding: 14px 12px;
            border-top: 1px solid var(--border-light);
            font-size: 13px;
            color: var(--muted-text);
            line-height: 1.5;
        }

        .main-content {
            margin-left: 268px;
            min-height: 100vh;
        }

        @media (max-width: 1023px) {
            .desktop-sidebar {
                display: none;
            }
            .main-content {
                margin-left: 0;
            }
        }

        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 100;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            padding: 0 16px;
            height: 64px;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 2px 8px rgba(15, 95, 255, 0.04);
        }

        @media (max-width: 1023px) {
            .mobile-header {
                display: flex;
            }
        }

        .mobile-logo {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
        }

        .hamburger-btn {
            background: none;
            border: none;
            cursor: pointer;
            padding: 10px;
            min-width: 44px;
            min-height: 44px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            border-radius: 10px;
            transition: background 0.2s ease;
        }

        .hamburger-btn:hover {
            background: var(--light-blue);
        }

        .hamburger-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--body-text);
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .hamburger-btn.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger-btn.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger-btn.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(14, 26, 43, 0.5);
            z-index: 90;
        }

        .mobile-drawer-overlay.active {
            display: block;
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: 280px;
            max-width: 85vw;
            background: #FFFFFF;
            z-index: 95;
            transform: translateX(100%);
            transition: transform 0.3s ease;
            display: flex;
            flex-direction: column;
            padding: 20px 16px;
            box-shadow: -4px 0 20px rgba(14, 26, 43, 0.15);
        }

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

        .mobile-drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            margin-top: 16px;
        }

        .mobile-drawer-nav .sidebar-nav-item {
            padding: 14px 16px;
            font-size: 16px;
        }

        .compare-table-row {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr 1fr;
            gap: 0;
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: 12px;
            padding: 18px 20px;
            margin-bottom: 12px;
            transition: background 0.2s ease, box-shadow 0.2s ease;
            align-items: center;
        }

        .compare-table-row:hover {
            background: #FAFCFF;
            box-shadow: 0 2px 10px rgba(15, 95, 255, 0.06);
        }

        .compare-table-header {
            background: var(--light-blue);
            font-weight: 700;
            color: var(--primary);
            border-color: transparent;
        }

        @media (max-width: 768px) {
            .compare-table-row {
                grid-template-columns: 1fr;
                gap: 10px;
                padding: 16px;
            }
            .compare-table-header {
                display: none;
            }
        }

        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: 14px;
            background: #FFFFFF;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .faq-item:hover {
            border-color: rgba(15, 95, 255, 0.2);
            box-shadow: 0 2px 10px rgba(15, 95, 255, 0.05);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            background: none;
            border: none;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--body-text);
            text-align: left;
            transition: background 0.2s ease;
            min-height: 44px;
        }

        .faq-question:hover {
            background: var(--light-blue);
        }

        .faq-question:focus-visible {
            outline: var(--focus-ring);
            outline-offset: -3px;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--light-blue);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            transition: transform 0.25s ease;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #FFFFFF;
        }

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

        .faq-answer-inner {
            padding: 0 20px 20px;
            color: var(--muted-text);
            font-size: 14px;
            line-height: 1.8;
            border-left: 2px solid var(--primary);
            margin-left: 20px;
            margin-top: 4px;
            padding-left: 16px;
        }

        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-light);
            border-radius: 10px;
            font-size: 15px;
            color: var(--body-text);
            background: #FFFFFF;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            min-height: 44px;
        }

        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 95, 255, 0.15);
        }

        .form-input::placeholder {
            color: #9AA6BE;
        }

        .form-label {
            display: block;
            font-weight: 600;
            font-size: 14px;
            color: var(--body-text);
            margin-bottom: 6px;
        }

        .footer-link {
            color: #9AA9C2;
            transition: color 0.2s ease;
            font-size: 14px;
            line-height: 1.8;
        }

        .footer-link:hover {
            color: #FFFFFF;
        }

        .footer-heading {
            color: #FFFFFF;
            font-weight: 700;
            font-size: 15px;
            margin-bottom: 14px;
        }

        .partner-tag {
            display: flex;
            align-items: center;
            gap: 10px;
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: 12px;
            padding: 14px 18px;
            transition: all 0.2s ease;
        }

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

        .partner-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }

        .news-item {
            display: flex;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-light);
            transition: background 0.2s ease;
        }

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

        .news-item:hover {
            background: #FAFCFF;
        }

        .news-index {
            font-family: 'Segoe UI', 'Helvetica Neue', monospace;
            font-variant-numeric: tabular-nums;
            font-size: 28px;
            font-weight: 800;
            color: var(--light-blue);
            line-height: 1;
            flex-shrink: 0;
            min-width: 44px;
        }

        .review-card {
            background: #FFFFFF;
            border-radius: 16px;
            border: 1px solid var(--border-light);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.25s ease;
        }

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

        .review-stars {
            color: #F7C948;
            letter-spacing: 2px;
            font-size: 16px;
        }

        .stat-card {
            background: #FFFFFF;
            border-radius: 16px;
            border: 1px solid var(--border-light);
            padding: 24px 20px;
            box-shadow: var(--shadow-card);
            text-align: center;
            transition: all 0.25s ease;
        }

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

        .stat-label {
            font-size: 13px;
            color: var(--muted-text);
            font-weight: 500;
            margin-bottom: 8px;
        }

        .stat-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 600;
            margin-top: 8px;
        }

        .stat-trend.up {
            color: var(--accent);
        }
        .stat-trend.down {
            color: #E05B5B;
        }

        .service-card {
            background: #FFFFFF;
            border-radius: 16px;
            border: 1px solid var(--border-light);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.25s ease;
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .service-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(15, 95, 255, 0.18);
        }

        .service-card-number {
            position: absolute;
            top: 16px;
            right: 20px;
            font-family: 'Segoe UI', 'Helvetica Neue', monospace;
            font-size: 48px;
            font-weight: 800;
            color: rgba(15, 95, 255, 0.06);
            line-height: 1;
        }

        .service-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--light-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            flex-shrink: 0;
        }

        .rank-badge-1 {
            background: rgba(247, 201, 72, 0.2);
            color: #8B6B00;
            font-weight: 700;
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
        }

        .rank-badge-2 {
            background: rgba(192, 207, 228, 0.3);
            color: #4A5B75;
            font-weight: 700;
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
        }

        .rank-badge-3 {
            background: rgba(206, 156, 90, 0.2);
            color: #8B5E2F;
            font-weight: 700;
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            margin-top: 32px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: #7A8BA3;
        }

        .footer-bottom a {
            color: #7A8BA3;
            transition: color 0.2s ease;
        }
        .footer-bottom a:hover {
            color: #FFFFFF;
        }

        .hero-stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 32px;
        }

        @media (max-width: 768px) {
            .hero-stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
        }

        @media (max-width: 480px) {
            .hero-stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
        }

        .section-divider {
            width: 100%;
            height: 1px;
            background: var(--border-light);
            border: none;
            margin: 0;
        }

        .brand-intro-block {
            background: #FFFFFF;
            border-radius: 20px;
            border: 1px solid var(--border-light);
            padding: 36px 40px;
            box-shadow: var(--shadow-card);
            display: flex;
            gap: 32px;
            align-items: flex-start;
        }

        @media (max-width: 768px) {
            .brand-intro-block {
                flex-direction: column;
                padding: 24px;
                gap: 20px;
            }
        }

        .backdrop-image {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            min-height: 260px;
            background-size: cover;
            background-position: center;
        }

        .backdrop-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(14, 26, 43, 0.6) 0%, transparent 50%);
        }

        .backdrop-image-content {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 24px;
            z-index: 2;
            color: #FFFFFF;
        }

        .text-balance {
            text-wrap: balance;
        }

        .hidden-mobile {
            display: block;
        }

        @media (max-width: 1023px) {
            .hidden-mobile {
                display: none;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0F5FFF;
            --primary-hover: #0A4BD6;
            --light-blue: #E8F0FE;
            --accent: #00A6A6;
            --bg-light: #F5F7FA;
            --body-text: #172033;
            --muted-text: #5B6B85;
            --border-light: #E8EDF6;
            --footer-dark: #0E1A2B;
            --card-radius: 16px;
            --btn-radius: 12px;
            --shadow-card: 0 4px 16px rgba(15, 95, 255, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(15, 95, 255, 0.12);
            --focus-ring: 3px solid rgba(15, 95, 255, 0.25);
            --section-gap-desktop: 96px;
            --section-gap-mobile: 56px;
            --card-padding: 28px;
            --sidebar-width: 268px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            color: var(--body-text);
            background: var(--bg-light);
            line-height: 1.7;
            font-size: 15px;
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

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

        .container-main {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

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

        @media (max-width: 1024px) {
            .section-gap {
                padding-top: var(--section-gap-mobile);
                padding-bottom: var(--section-gap-mobile);
            }
        }

        .card-base {
            background: #FFFFFF;
            border-radius: var(--card-radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
        }

        .card-base:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(15, 95, 255, 0.18);
        }

        .card-base:focus-within {
            outline: var(--focus-ring);
            outline-offset: 2px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: var(--btn-radius);
            padding: 14px 20px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            min-height: 44px;
            min-width: 44px;
            border: 2px solid transparent;
            cursor: pointer;
            transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 4px 12px rgba(15, 95, 255, 0.25);
        }

        .btn-primary:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 3px;
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #FFFFFF;
            color: var(--primary);
            border-radius: var(--btn-radius);
            padding: 14px 20px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            min-height: 44px;
            min-width: 44px;
            border: 2px solid var(--primary);
            cursor: pointer;
            transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease;
            white-space: nowrap;
        }

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

        .btn-secondary:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 3px;
        }

        .btn-secondary:active {
            transform: translateY(1px);
        }

        .badge-tag {
            display: inline-block;
            background: var(--light-blue);
            color: var(--primary);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
        }

        .badge-accent {
            display: inline-block;
            background: rgba(0, 166, 166, 0.1);
            color: var(--accent);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 600;
            line-height: 1.4;
        }

        .badge-gold {
            display: inline-block;
            background: rgba(247, 201, 72, 0.15);
            color: #8B6B00;
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 700;
            line-height: 1.4;
        }

        .badge-gray {
            display: inline-block;
            background: #F0F2F7;
            color: var(--muted-text);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        /* 左侧竖向导航 */
        .sidebar-nav {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--sidebar-width);
            background: #FFFFFF;
            border-right: 1px solid var(--border-light);
            z-index: 50;
            display: flex;
            flex-direction: column;
            padding: 20px 16px;
            overflow-y: auto;
            transition: transform 0.3s ease;
        }

        .sidebar-nav .brand-area {
            padding: 8px 8px 20px;
            border-bottom: 1px solid var(--border-light);
            margin-bottom: 16px;
            flex-shrink: 0;
        }

        .sidebar-nav .brand-area .brand-name {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-nav .brand-area .brand-tagline {
            font-size: 12px;
            color: var(--muted-text);
            margin-top: 4px;
        }

        .sidebar-nav-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 14px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--muted-text);
            transition: background 0.2s ease, color 0.2s ease, padding-left 0.2s ease;
            position: relative;
            min-height: 44px;
        }

        .sidebar-nav-item:hover {
            background: var(--light-blue);
            color: var(--primary);
            padding-left: 18px;
        }

        .sidebar-nav-item.active {
            background: var(--light-blue);
            color: var(--primary);
            font-weight: 700;
            padding-left: 18px;
        }

        .sidebar-nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 28px;
            background: var(--primary);
            border-radius: 0 4px 4px 0;
        }

        .sidebar-nav-item:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 2px;
        }

        .sidebar-nav .nav-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            opacity: 0.7;
        }

        .sidebar-nav .nav-footer {
            margin-top: auto;
            padding-top: 16px;
            border-top: 1px solid var(--border-light);
            font-size: 12px;
            color: var(--muted-text);
            flex-shrink: 0;
        }

        /* 内容区 */
        .content-area {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        @media (max-width: 1023px) {
            .sidebar-nav {
                transform: translateX(-100%);
                width: 280px;
                box-shadow: 0 0 30px rgba(0, 0, 0, 0.15);
            }
            .sidebar-nav.open {
                transform: translateX(0);
            }
            .content-area {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
                align-items: center;
                justify-content: space-between;
                height: 62px;
                background: #FFFFFF;
                border-bottom: 1px solid var(--border-light);
                padding: 0 16px;
                position: sticky;
                top: 0;
                z-index: 40;
            }
            .mobile-header .brand-name {
                font-size: 20px;
                font-weight: 800;
                color: var(--primary);
            }
            .mobile-header .hamburger {
                width: 44px;
                height: 44px;
                display: flex;
                align-items: center;
                justify-content: center;
                background: var(--light-blue);
                border: none;
                border-radius: 10px;
                cursor: pointer;
                color: var(--primary);
                transition: background 0.2s ease;
            }
            .mobile-header .hamburger:hover {
                background: #d6e4fd;
            }
            .sidebar-overlay {
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(0, 0, 0, 0.45);
                z-index: 45;
                display: none;
                transition: opacity 0.3s ease;
            }
            .sidebar-overlay.show {
                display: block;
            }
        }

        /* 页脚 */
        .footer-dark {
            background: var(--footer-dark);
            color: #fff;
            padding: 48px 0 24px;
            margin-top: auto;
        }

        .footer-dark .footer-heading {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

        .footer-dark .footer-link {
            color: #9AA9C2;
            font-size: 14px;
            line-height: 2;
            transition: color 0.2s ease;
        }

        .footer-dark .footer-link:hover {
            color: #fff;
        }

        .footer-dark .footer-bottom {
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            flex-wrap: wrap;
            gap: 12px 20px;
            font-size: 12px;
            color: #9AA9C2;
        }

        /* Hero 区域 */
        .hero-service {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 72px 24px 64px;
            text-align: center;
            border-radius: 0 0 24px 24px;
        }

        .hero-service::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(255, 255, 255, 0.9);
            border-radius: 0 0 24px 24px;
        }

        .hero-service .hero-inner {
            position: relative;
            z-index: 1;
            max-width: 760px;
            margin: 0 auto;
        }

        .search-box {
            display: flex;
            gap: 10px;
            max-width: 560px;
            margin: 28px auto 16px;
            background: #FFFFFF;
            border-radius: 12px;
            border: 2px solid var(--border-light);
            padding: 4px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 95, 255, 0.12);
        }

        .search-box input {
            flex: 1;
            border: none;
            outline: none;
            padding: 10px 16px;
            font-size: 15px;
            background: transparent;
            color: var(--body-text);
            min-width: 0;
        }

        .search-box .search-btn {
            padding: 10px 24px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 10px;
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            min-height: 44px;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: background 0.2s ease;
            flex-shrink: 0;
        }

        .search-box .search-btn:hover {
            background: var(--primary-hover);
        }

        .quick-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: center;
            margin-top: 12px;
        }

        .quick-tags .quick-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 6px 16px;
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: var(--muted-text);
            cursor: pointer;
            transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
        }

        .quick-tags .quick-tag:hover {
            background: var(--light-blue);
            color: var(--primary);
            border-color: var(--primary);
        }

        /* 服务卡片 */
        .service-card {
            background: #FFFFFF;
            border-radius: var(--card-radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
            display: flex;
            flex-direction: column;
        }

        .service-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(15, 95, 255, 0.18);
        }

        .service-card .service-cover {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-bottom: 1px solid var(--border-light);
        }

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

        .service-card .service-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--body-text);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .service-card .service-desc {
            font-size: 14px;
            color: var(--muted-text);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }

        .service-card .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 14px;
        }

        .service-card .service-metrics {
            display: flex;
            gap: 16px;
            font-size: 13px;
            color: var(--muted-text);
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
            margin-top: auto;
        }

        .service-card .service-metrics .metric-num {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            font-family: 'Segoe UI', 'Helvetica Neue', sans-serif;
            font-variant-numeric: tabular-nums;
        }

        .service-card .service-index {
            font-size: 28px;
            font-weight: 800;
            color: rgba(15, 95, 255, 0.12);
            font-family: 'Segoe UI', 'Helvetica Neue', sans-serif;
            letter-spacing: -1px;
            line-height: 1;
        }

        /* CTA 条 */
        .cta-strip {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
            border-radius: var(--card-radius);
            padding: 40px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            color: #fff;
        }

        .cta-strip .cta-text h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }

        .cta-strip .cta-text p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 520px;
        }

        .cta-strip .cta-buttons {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .cta-strip .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #FFFFFF;
            color: var(--primary);
            border-radius: var(--btn-radius);
            padding: 14px 24px;
            font-weight: 700;
            font-size: 15px;
            line-height: 1.4;
            min-height: 44px;
            min-width: 44px;
            border: 2px solid transparent;
            cursor: pointer;
            transition: background 0.2s ease, transform 0.15s ease;
            white-space: nowrap;
        }

        .cta-strip .btn-white:hover {
            background: var(--light-blue);
        }

        .cta-strip .btn-outline-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #fff;
            border-radius: var(--btn-radius);
            padding: 14px 24px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            min-height: 44px;
            min-width: 44px;
            border: 2px solid rgba(255, 255, 255, 0.6);
            cursor: pointer;
            transition: background 0.2s ease, border-color 0.2s ease;
            white-space: nowrap;
        }

        .cta-strip .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
        }

        /* 筛选标签 */
        .filter-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 24px;
        }

        .filter-tabs .filter-tab {
            padding: 8px 18px;
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: var(--muted-text);
            cursor: pointer;
            transition: all 0.2s ease;
            min-height: 40px;
            display: inline-flex;
            align-items: center;
        }

        .filter-tabs .filter-tab:hover {
            background: var(--light-blue);
            color: var(--primary);
            border-color: var(--primary);
        }

        .filter-tabs .filter-tab.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        /* 响应式 */
        @media (max-width: 768px) {
            .hero-service {
                padding: 48px 16px 40px;
                border-radius: 0 0 16px 16px;
            }
            .hero-service::before {
                border-radius: 0 0 16px 16px;
            }
            .service-card .service-cover {
                height: 140px;
            }
            .cta-strip {
                padding: 28px 20px;
                border-radius: 12px;
            }
            .cta-strip .cta-text h3 {
                font-size: 18px;
            }
            .search-box {
                flex-direction: column;
                padding: 8px;
            }
            .search-box .search-btn {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .service-card .service-metrics {
                flex-wrap: wrap;
                gap: 10px;
            }
            .hero-service {
                padding: 36px 12px 32px;
            }
            .filter-tabs .filter-tab {
                padding: 6px 14px;
                font-size: 12px;
                min-height: 36px;
            }
        }

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

        @media (max-width: 1023px) {
            .desktop-only {
                display: none;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0F5FFF;
            --primary-hover: #0A4BD6;
            --light-blue: #E8F0FE;
            --accent: #00A6A6;
            --bg-light: #F5F7FA;
            --body-text: #172033;
            --muted-text: #5B6B85;
            --border-light: #E8EDF6;
            --footer-dark: #0E1A2B;
            --card-radius: 16px;
            --btn-radius: 12px;
            --shadow-card: 0 4px 16px rgba(15, 95, 255, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(15, 95, 255, 0.12);
            --focus-ring: 3px solid rgba(15, 95, 255, 0.25);
            --section-gap-desktop: 96px;
            --section-gap-mobile: 56px;
            --card-padding: 28px;
            --sidebar-width: 268px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            color: var(--body-text);
            background: var(--bg-light);
            line-height: 1.7;
            font-size: 15px;
            min-height: 100vh;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container-main {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section-gap {
            padding-top: var(--section-gap-mobile);
            padding-bottom: var(--section-gap-mobile);
        }
        @media (min-width: 1024px) {
            .section-gap {
                padding-top: var(--section-gap-desktop);
                padding-bottom: var(--section-gap-desktop);
            }
        }
        .card-base {
            background: #FFFFFF;
            border-radius: var(--card-radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
        }
        .card-base:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(15, 95, 255, 0.18);
        }
        .card-base:focus-within {
            outline: var(--focus-ring);
            outline-offset: 2px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: var(--btn-radius);
            padding: 14px 20px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            min-height: 44px;
            min-width: 44px;
            border: 2px solid transparent;
            cursor: pointer;
            transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 4px 12px rgba(15, 95, 255, 0.25);
        }
        .btn-primary:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 3px;
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #FFFFFF;
            color: var(--primary);
            border-radius: var(--btn-radius);
            padding: 14px 20px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            min-height: 44px;
            min-width: 44px;
            border: 2px solid var(--primary);
            cursor: pointer;
            transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease;
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: var(--light-blue);
            color: var(--primary-hover);
        }
        .btn-secondary:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 3px;
        }
        .btn-secondary:active {
            transform: translateY(1px);
        }
        .badge-tag {
            display: inline-block;
            background: var(--light-blue);
            color: var(--primary);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
        }
        .badge-accent {
            display: inline-block;
            background: rgba(0, 166, 166, 0.1);
            color: var(--accent);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 600;
            line-height: 1.4;
        }
        .badge-gray {
            display: inline-block;
            background: #F0F2F7;
            color: var(--muted-text);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .metric-number {
            font-family: 'Segoe UI', 'Helvetica Neue', sans-serif;
            font-feature-settings: 'tnum';
            font-variant-numeric: tabular-nums;
            font-weight: 800;
            font-size: 36px;
            line-height: 1.2;
            color: var(--primary);
        }
        .metric-label {
            font-size: 13px;
            color: var(--muted-text);
            font-weight: 500;
        }
        .sidebar-nav-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            border-radius: 10px;
            color: var(--muted-text);
            font-weight: 500;
            font-size: 14px;
            line-height: 1.4;
            border-left: 3px solid transparent;
            transition: all 0.2s ease;
            min-height: 44px;
        }
        .sidebar-nav-item:hover {
            background: var(--light-blue);
            color: var(--primary);
            border-left-color: var(--primary);
        }
        .sidebar-nav-item.active {
            background: var(--light-blue);
            color: var(--primary);
            font-weight: 700;
            border-left-color: var(--primary);
        }
        .sidebar-nav-item:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 2px;
        }
        .filter-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 999px;
            border: 1px solid var(--border-light);
            background: #FFFFFF;
            color: var(--muted-text);
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s ease;
            min-height: 36px;
            white-space: nowrap;
        }
        .filter-chip:hover {
            background: var(--light-blue);
            color: var(--primary);
            border-color: rgba(15, 95, 255, 0.3);
        }
        .filter-chip.active {
            background: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
        }
        .filter-chip:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 2px;
        }
        .trend-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            padding: 16px 20px;
            border-radius: 12px;
            border: 1px solid var(--border-light);
            background: #FFFFFF;
            transition: all 0.2s ease;
        }
        .trend-row:hover {
            background: var(--light-blue);
            border-color: rgba(15, 95, 255, 0.2);
        }
        .trend-row:focus-within {
            outline: var(--focus-ring);
            outline-offset: 2px;
        }
        .status-dot {
            display: inline-flex;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            flex-shrink: 0;
        }
        .status-dot.live {
            background: #00A6A6;
            box-shadow: 0 0 8px rgba(0, 166, 166, 0.5);
            animation: pulse-dot 1.8s infinite;
        }
        .status-dot.upcoming {
            background: #F7C948;
        }
        .status-dot.finished {
            background: #9AA9C2;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.6;
                transform: scale(1.4);
            }
        }
        .pagination-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: 10px;
            border: 1px solid var(--border-light);
            background: #FFFFFF;
            color: var(--muted-text);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s ease;
        }
        .pagination-btn:hover {
            background: var(--light-blue);
            color: var(--primary);
            border-color: rgba(15, 95, 255, 0.3);
        }
        .pagination-btn.active {
            background: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
        }
        .pagination-btn:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 2px;
        }
        .sidebar-info-card {
            background: #FFFFFF;
            border-radius: var(--card-radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            padding: 24px;
        }
        .sidebar-info-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--body-text);
            margin-bottom: 12px;
        }
        .sidebar-info-card p {
            font-size: 14px;
            color: var(--muted-text);
            line-height: 1.7;
        }
        .footer-dark {
            background: var(--footer-dark);
            color: #fff;
            padding: 48px 0 24px;
        }
        .footer-heading {
            font-size: 16px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }
        .footer-link {
            color: #9AA9C2;
            font-size: 14px;
            line-height: 1.8;
            transition: color 0.2s ease;
        }
        .footer-link:hover {
            color: #FFFFFF;
        }
        .footer-bottom {
            margin-top: 28px;
            padding-top: 18px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: #9AA9C2;
        }
        .footer-bottom span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .mobile-nav-backdrop {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(14, 26, 43, 0.5);
            z-index: 40;
        }
        .mobile-nav-backdrop.open {
            display: block;
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            left: 0;
            height: 100vh;
            width: 280px;
            background: #FFFFFF;
            z-index: 50;
            transform: translateX(-100%);
            transition: transform 0.3s ease;
            box-shadow: 0 0 30px rgba(0, 0, 0, 0.15);
            overflow-y: auto;
            padding: 20px 16px;
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .desktop-sidebar {
            display: none;
        }
        @media (min-width: 1024px) {
            .desktop-sidebar {
                display: flex;
                position: fixed;
                top: 0;
                left: 0;
                height: 100vh;
                width: var(--sidebar-width);
                flex-direction: column;
                background: #FFFFFF;
                border-right: 1px solid var(--border-light);
                z-index: 30;
                padding: 20px 14px;
                overflow-y: auto;
            }
            .main-content {
                margin-left: var(--sidebar-width);
            }
            .mobile-topbar {
                display: none;
            }
        }
        .mobile-topbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            padding: 0 16px;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 35;
        }
        .hamburger-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            border: 1px solid var(--border-light);
            background: #FFFFFF;
            cursor: pointer;
            transition: all 0.2s ease;
        }
        .hamburger-btn:hover {
            background: var(--light-blue);
            border-color: rgba(15, 95, 255, 0.3);
        }
        .hamburger-btn:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 2px;
        }
        .hamburger-icon {
            display: flex;
            flex-direction: column;
            gap: 4px;
            width: 20px;
        }
        .hamburger-icon span {
            display: block;
            height: 2px;
            width: 20px;
            background: var(--body-text);
            border-radius: 2px;
        }
        .hamburger-icon span:last-child {
            width: 14px;
            align-self: flex-end;
        }
        .metric-card {
            background: #FFFFFF;
            border-radius: var(--card-radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            padding: 22px 24px;
            transition: all 0.25s ease;
        }
        .metric-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: rgba(15, 95, 255, 0.18);
        }
        .metric-card:focus-within {
            outline: var(--focus-ring);
            outline-offset: 2px;
        }
        .hero-bg-light {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .hero-bg-light::after {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(255, 255, 255, 0.9);
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.93) 0%, rgba(245, 247, 250, 0.88) 100%);
            pointer-events: none;
        }
        .hero-bg-light>* {
            position: relative;
            z-index: 1;
        }

/* roulang page: category3 */
:root {
            --primary: #0F5FFF;
            --primary-hover: #0A4BD6;
            --light-blue: #E8F0FE;
            --accent: #00A6A6;
            --bg-light: #F5F7FA;
            --body-text: #172033;
            --muted-text: #5B6B85;
            --border-light: #E8EDF6;
            --footer-dark: #0E1A2B;
            --card-radius: 16px;
            --btn-radius: 12px;
            --shadow-card: 0 4px 16px rgba(15, 95, 255, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(15, 95, 255, 0.12);
            --focus-ring: 3px solid rgba(15, 95, 255, 0.25);
            --section-gap-desktop: 96px;
            --section-gap-mobile: 56px;
            --card-padding: 28px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            color: var(--body-text);
            background: var(--bg-light);
            line-height: 1.7;
            font-size: 15px;
            min-height: 100vh;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container-main {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section-gap {
            padding-top: var(--section-gap-desktop);
            padding-bottom: var(--section-gap-desktop);
        }
        @media (max-width: 640px) {
            .section-gap {
                padding-top: var(--section-gap-mobile);
                padding-bottom: var(--section-gap-mobile);
            }
        }
        .card-base {
            background: #FFFFFF;
            border-radius: var(--card-radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
        }
        .card-base:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(15, 95, 255, 0.18);
        }
        .card-base:focus-within {
            outline: var(--focus-ring);
            outline-offset: 2px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: var(--btn-radius);
            padding: 14px 20px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            min-height: 44px;
            min-width: 44px;
            border: 2px solid transparent;
            cursor: pointer;
            transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 4px 12px rgba(15, 95, 255, 0.25);
        }
        .btn-primary:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 3px;
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #FFFFFF;
            color: var(--primary);
            border-radius: var(--btn-radius);
            padding: 14px 20px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            min-height: 44px;
            min-width: 44px;
            border: 2px solid var(--primary);
            cursor: pointer;
            transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease;
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: var(--light-blue);
            color: var(--primary-hover);
        }
        .btn-secondary:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 3px;
        }
        .btn-secondary:active {
            transform: translateY(1px);
        }
        .badge-tag {
            display: inline-block;
            background: var(--light-blue);
            color: var(--primary);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
        }
        .badge-accent {
            display: inline-block;
            background: rgba(0, 166, 166, 0.1);
            color: var(--accent);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 600;
            line-height: 1.4;
        }
        .badge-gold {
            display: inline-block;
            background: rgba(247, 201, 72, 0.15);
            color: #8B6B00;
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 700;
            line-height: 1.4;
        }
        .badge-gray {
            display: inline-block;
            background: #F0F2F7;
            color: var(--muted-text);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        /* 侧边导航 */
        .sidebar-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 268px;
            height: 100vh;
            background: #FFFFFF;
            border-right: 1px solid var(--border-light);
            z-index: 100;
            display: flex;
            flex-direction: column;
            box-shadow: 2px 0 12px rgba(15, 95, 255, 0.03);
            transition: transform 0.3s ease;
        }
        .sidebar-nav-header {
            padding: 28px 24px 20px;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-nav-body {
            flex: 1;
            padding: 20px 16px;
            overflow-y: auto;
        }
        .sidebar-nav-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            border-radius: 10px;
            margin-bottom: 4px;
            font-size: 14px;
            font-weight: 500;
            color: var(--muted-text);
            transition: background 0.2s ease, color 0.2s ease, border-left 0.2s ease;
            border-left: 3px solid transparent;
            position: relative;
        }
        .sidebar-nav-item:hover {
            background: var(--light-blue);
            color: var(--primary);
        }
        .sidebar-nav-item.active {
            background: var(--light-blue);
            color: var(--primary);
            font-weight: 700;
            border-left: 3px solid var(--primary);
        }
        .sidebar-nav-footer {
            padding: 16px 24px;
            border-top: 1px solid var(--border-light);
        }
        @media (max-width: 1023px) {
            .sidebar-nav {
                transform: translateX(-100%);
                width: 280px;
            }
            .sidebar-nav.open {
                transform: translateX(0);
                box-shadow: 0 0 40px rgba(0, 0, 0, 0.2);
            }
        }

        /* 移动端顶部导航 */
        .mobile-topbar {
            display: none;
            position: sticky;
            top: 0;
            z-index: 90;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            padding: 0 16px;
            height: 62px;
            align-items: center;
            justify-content: space-between;
        }
        @media (max-width: 1023px) {
            .mobile-topbar {
                display: flex;
            }
        }

        /* 抽屉遮罩 */
        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.45);
            z-index: 95;
        }
        .drawer-overlay.active {
            display: block;
        }

        /* 对比表 */
        .compare-table {
            border-radius: var(--card-radius);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            background: #FFFFFF;
        }
        .compare-table-header {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            background: var(--light-blue);
            padding: 16px 24px;
            font-weight: 700;
            font-size: 14px;
            color: var(--body-text);
            border-bottom: 1px solid var(--border-light);
            align-items: center;
        }
        .compare-table-row {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            padding: 16px 24px;
            border-bottom: 1px solid var(--border-light);
            align-items: center;
            font-size: 14px;
            transition: background 0.2s ease;
        }
        .compare-table-row:last-child {
            border-bottom: none;
        }
        .compare-table-row:hover {
            background: #F8FAFF;
        }
        .compare-dimension {
            font-weight: 600;
            color: var(--body-text);
            font-size: 14px;
        }
        .compare-value {
            font-weight: 600;
            color: var(--body-text);
            font-size: 15px;
        }
        .compare-value.highlight {
            color: var(--primary);
            font-weight: 700;
        }
        .compare-value.accent-value {
            color: var(--accent);
            font-weight: 700;
        }
        @media (max-width: 768px) {
            .compare-table-header {
                display: none;
            }
            .compare-table-row {
                grid-template-columns: 1fr;
                gap: 6px;
                padding: 16px 20px;
                border: 1px solid var(--border-light);
                border-radius: 12px;
                margin-bottom: 12px;
                background: #FFFFFF;
            }
            .compare-table-row:hover {
                background: #FFFFFF;
            }
            .compare-dimension {
                font-size: 15px;
                color: var(--primary);
                font-weight: 700;
                padding-bottom: 4px;
                border-bottom: 1px solid var(--border-light);
                margin-bottom: 8px;
            }
            .compare-value {
                display: flex;
                align-items: center;
                gap: 8px;
                flex-wrap: wrap;
            }
        }

        /* 筛选标签 */
        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s ease;
            border: 1px solid var(--border-light);
            background: #FFFFFF;
            color: var(--muted-text);
            min-height: 40px;
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .filter-tag.active {
            background: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
            font-weight: 600;
        }

        /* FAQ */
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: 14px;
            background: #FFFFFF;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .faq-item:hover {
            border-color: rgba(15, 95, 255, 0.25);
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            cursor: pointer;
            gap: 12px;
            font-weight: 600;
            font-size: 15px;
            color: var(--body-text);
            transition: background 0.2s ease;
            min-height: 44px;
            border: none;
            background: #FFFFFF;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            background: var(--light-blue);
        }
        .faq-question:focus-visible {
            outline: var(--focus-ring);
            outline-offset: -2px;
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--light-blue);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            transition: transform 0.3s ease, background 0.2s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #FFFFFF;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 20px;
            background: #FAFCFF;
            border-left: 3px solid var(--primary);
            margin-left: 20px;
            border-radius: 0 0 0 8px;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 16px 20px 18px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--muted-text);
            line-height: 1.8;
            margin: 0;
        }

        /* 页脚 */
        .footer-dark {
            background: var(--footer-dark);
            color: #fff;
            padding: 48px 0 24px;
        }
        .footer-heading {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-link {
            color: #9AA9C2;
            font-size: 14px;
            transition: color 0.2s ease;
            display: inline-block;
            padding: 2px 0;
        }
        .footer-link:hover {
            color: #FFFFFF;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 36px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 20px;
            font-size: 13px;
            color: #9AA9C2;
            align-items: center;
            justify-content: space-between;
        }

        /* 表单 */
        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-light);
            border-radius: 10px;
            font-size: 14px;
            color: var(--body-text);
            background: #FFFFFF;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            min-height: 44px;
        }
        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 95, 255, 0.15);
        }
        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--body-text);
            margin-bottom: 6px;
        }
        .form-group {
            margin-bottom: 16px;
        }

        /* 排名徽章 */
        .rank-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 32px;
            height: 32px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 700;
            padding: 0 8px;
            flex-shrink: 0;
        }
        .rank-1 {
            background: rgba(15, 95, 255, 0.1);
            color: var(--primary);
        }
        .rank-2 {
            background: rgba(0, 166, 166, 0.1);
            color: var(--accent);
        }
        .rank-3 {
            background: rgba(247, 201, 72, 0.2);
            color: #8B6B00;
        }

        /* 状态徽章 */
        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 12px;
            border-radius: 999px;
            white-space: nowrap;
        }
        .status-up {
            background: rgba(0, 166, 166, 0.1);
            color: var(--accent);
        }
        .status-up::before {
            content: '▲';
            font-size: 10px;
        }
        .status-stable {
            background: rgba(15, 95, 255, 0.1);
            color: var(--primary);
        }
        .status-stable::before {
            content: '●';
            font-size: 10px;
        }
        .status-fast {
            background: rgba(247, 201, 72, 0.15);
            color: #8B6B00;
        }
        .status-fast::before {
            content: '⚡';
            font-size: 12px;
        }

        /* 数字等宽 */
        .tabular-nums {
            font-family: 'Segoe UI', 'Helvetica Neue', sans-serif;
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.02em;
        }

        /* 内容区偏移 */
        .content-offset {
            margin-left: 268px;
        }
        @media (max-width: 1023px) {
            .content-offset {
                margin-left: 0;
            }
        }

        .hero-min-height {
            min-height: 480px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        @media (max-width: 640px) {
            .hero-min-height {
                min-height: 360px;
            }
        }

        .bg-hero-comparison {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .bg-hero-comparison::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(245, 247, 250, 0.92);
            z-index: 0;
        }
        .bg-hero-comparison > * {
            position: relative;
            z-index: 1;
        }

        .hover-row-highlight:hover .compare-dimension {
            color: var(--primary);
        }

/* roulang page: category4 */
:root {
            --primary: #0F5FFF;
            --primary-hover: #0A4BD6;
            --light-blue: #E8F0FE;
            --accent: #00A6A6;
            --bg-light: #F5F7FA;
            --body-text: #172033;
            --muted-text: #5B6B85;
            --border-light: #E8EDF6;
            --footer-dark: #0E1A2B;
            --card-radius: 16px;
            --btn-radius: 12px;
            --shadow-card: 0 4px 16px rgba(15, 95, 255, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(15, 95, 255, 0.12);
            --focus-ring: 3px solid rgba(15, 95, 255, 0.25);
            --section-gap-desktop: 96px;
            --section-gap-mobile: 56px;
            --card-padding: 28px;
            --sidebar-width: 268px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            color: var(--body-text);
            background: var(--bg-light);
            line-height: 1.7;
            font-size: 15px;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container-main {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

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

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

        .card-base {
            background: #FFFFFF;
            border-radius: var(--card-radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
        }

        .card-base:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(15, 95, 255, 0.18);
        }

        .card-base:focus-within {
            outline: var(--focus-ring);
            outline-offset: 2px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: var(--btn-radius);
            padding: 14px 20px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            min-height: 44px;
            min-width: 44px;
            border: 2px solid transparent;
            cursor: pointer;
            transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 4px 12px rgba(15, 95, 255, 0.25);
        }

        .btn-primary:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 3px;
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #FFFFFF;
            color: var(--primary);
            border-radius: var(--btn-radius);
            padding: 14px 20px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            min-height: 44px;
            min-width: 44px;
            border: 2px solid var(--primary);
            cursor: pointer;
            transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease;
            white-space: nowrap;
        }

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

        .btn-secondary:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 3px;
        }

        .btn-secondary:active {
            transform: translateY(1px);
        }

        .badge-tag {
            display: inline-block;
            background: var(--light-blue);
            color: var(--primary);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
        }

        .badge-accent {
            display: inline-block;
            background: rgba(0, 166, 166, 0.1);
            color: var(--accent);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 600;
            line-height: 1.4;
        }

        .badge-gold {
            display: inline-block;
            background: rgba(247, 201, 72, 0.15);
            color: #8B6B00;
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 700;
            line-height: 1.4;
        }

        .badge-gray {
            display: inline-block;
            background: #F0F2F7;
            color: var(--muted-text);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        /* Sidebar Navigation */
        .sidebar-wrapper {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: #FFFFFF;
            border-right: 1px solid var(--border-light);
            z-index: 50;
            display: flex;
            flex-direction: column;
            padding: 24px 16px;
            box-shadow: 2px 0 12px rgba(15, 95, 255, 0.04);
        }

        .sidebar-brand {
            font-size: 24px;
            font-weight: 800;
            color: var(--body-text);
            letter-spacing: -0.5px;
            margin-bottom: 32px;
            padding: 8px 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-brand .brand-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary);
            display: inline-block;
            flex-shrink: 0;
        }

        .sidebar-nav-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--muted-text);
            transition: all 0.2s ease;
            position: relative;
            margin-bottom: 4px;
            line-height: 1.4;
            min-height: 44px;
        }

        .sidebar-nav-item:hover {
            background: var(--light-blue);
            color: var(--primary);
        }

        .sidebar-nav-item.active {
            background: var(--light-blue);
            color: var(--primary);
            font-weight: 700;
        }

        .sidebar-nav-item.active::before {
            content: '';
            position: absolute;
            left: -16px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--primary);
            border-radius: 0 3px 3px 0;
        }

        .sidebar-footer {
            margin-top: auto;
            padding: 16px 12px;
            border-top: 1px solid var(--border-light);
            font-size: 13px;
            color: var(--muted-text);
            line-height: 1.6;
        }

        /* Mobile Navigation */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            z-index: 60;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            box-shadow: 0 2px 8px rgba(15, 95, 255, 0.04);
        }

        .mobile-brand {
            font-size: 20px;
            font-weight: 800;
            color: var(--body-text);
        }

        .hamburger-btn {
            display: flex;
            flex-direction: column;
            gap: 5px;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: 10px;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .hamburger-btn:hover {
            background: var(--light-blue);
            border-color: var(--primary);
        }

        .hamburger-line {
            width: 22px;
            height: 2px;
            background: var(--body-text);
            border-radius: 2px;
            transition: all 0.25s ease;
        }

        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(14, 26, 43, 0.5);
            z-index: 55;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }

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

        .drawer-menu {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 280px;
            background: #FFFFFF;
            z-index: 65;
            transform: translateX(-100%);
            transition: transform 0.3s ease;
            padding: 20px 16px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            overflow-y: auto;
            box-shadow: 2px 0 20px rgba(14, 26, 43, 0.15);
        }

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

        .drawer-menu .sidebar-nav-item {
            margin-bottom: 2px;
        }

        .drawer-menu .sidebar-nav-item.active::before {
            display: none;
        }

        /* FAQ Tabs */
        .faq-tab-btn {
            padding: 10px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            border: 1px solid var(--border-light);
            background: #FFFFFF;
            color: var(--muted-text);
            cursor: pointer;
            transition: all 0.2s ease;
            min-height: 40px;
            line-height: 1.3;
        }

        .faq-tab-btn:hover {
            background: var(--light-blue);
            color: var(--primary);
            border-color: rgba(15, 95, 255, 0.25);
        }

        .faq-tab-btn.active {
            background: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
            font-weight: 600;
        }

        /* FAQ Accordion */
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: 12px;
            background: #FFFFFF;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .faq-item:hover {
            border-color: rgba(15, 95, 255, 0.2);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 18px 20px;
            background: #FFFFFF;
            border: none;
            cursor: pointer;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--body-text);
            line-height: 1.6;
            transition: background 0.2s ease;
            min-height: 60px;
        }

        .faq-question:hover {
            background: var(--light-blue);
        }

        .faq-number {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            background: var(--light-blue);
            border-radius: 8px;
            padding: 4px 8px;
            min-width: 36px;
            text-align: center;
            flex-shrink: 0;
            margin-top: 2px;
            font-family: 'Segoe UI', 'Helvetica Neue', sans-serif;
            letter-spacing: 0.5px;
        }

        .faq-question-text {
            flex: 1;
            font-size: 15px;
        }

        .faq-toggle-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--light-blue);
            color: var(--primary);
            font-size: 18px;
            font-weight: 700;
            transition: transform 0.3s ease;
            font-family: 'Segoe UI', 'Helvetica Neue', sans-serif;
        }

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

        .faq-answer-inner {
            padding: 0 20px 20px 70px;
            font-size: 14px;
            color: var(--muted-text);
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 600px;
        }

        .faq-item.open .faq-toggle-icon {
            transform: rotate(180deg);
            background: var(--primary);
            color: #FFFFFF;
        }

        .faq-item.open .faq-question {
            background: #FAFCFF;
        }

        .faq-badge {
            display: inline-block;
            background: var(--light-blue);
            color: var(--primary);
            border-radius: 999px;
            padding: 2px 10px;
            font-size: 12px;
            font-weight: 500;
            margin-bottom: 6px;
            line-height: 1.4;
        }

        /* Search Box */
        .search-box {
            position: relative;
            max-width: 480px;
        }

        .search-box input {
            width: 100%;
            padding: 14px 48px 14px 20px;
            border-radius: 12px;
            border: 1px solid var(--border-light);
            background: #FFFFFF;
            font-size: 15px;
            color: var(--body-text);
            line-height: 1.4;
            min-height: 48px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .search-box input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 95, 255, 0.15);
        }

        .search-box .search-icon {
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
            width: 20px;
            height: 20px;
            color: var(--muted-text);
            pointer-events: none;
        }

        /* Sidebar Cards */
        .help-sidebar-card {
            background: #FFFFFF;
            border-radius: 14px;
            border: 1px solid var(--border-light);
            padding: 20px;
            margin-bottom: 16px;
            box-shadow: var(--shadow-card);
        }

        .help-sidebar-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--body-text);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .help-sidebar-link {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 12px;
            border-radius: 8px;
            font-size: 14px;
            color: var(--muted-text);
            transition: all 0.2s ease;
            line-height: 1.4;
            min-height: 40px;
        }

        .help-sidebar-link:hover {
            background: var(--light-blue);
            color: var(--primary);
        }

        .help-sidebar-link .link-arrow {
            margin-left: auto;
            font-size: 16px;
            color: var(--primary);
            opacity: 0.6;
        }

        /* Steps */
        .step-card {
            background: #FFFFFF;
            border-radius: 14px;
            border: 1px solid var(--border-light);
            padding: 24px 20px;
            box-shadow: var(--shadow-card);
            transition: all 0.25s ease;
            height: 100%;
        }

        .step-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(15, 95, 255, 0.18);
        }

        .step-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--light-blue);
            font-family: 'Segoe UI', 'Helvetica Neue', sans-serif;
            line-height: 1;
            margin-bottom: 12px;
        }

        .step-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--body-text);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .step-desc {
            font-size: 14px;
            color: var(--muted-text);
            line-height: 1.7;
        }

        /* Hero cover */
        .hero-cover-wrap {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
        }

        .hero-cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 220px;
        }

        .hero-cover-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 20px;
            background: linear-gradient(to top, rgba(14, 26, 43, 0.85), rgba(14, 26, 43, 0.2), transparent);
            color: #FFFFFF;
        }

        .hero-cover-overlay p {
            font-size: 14px;
            line-height: 1.6;
            color: #E8EDF6;
        }

        /* Footer */
        .footer-dark {
            background: var(--footer-dark);
            color: #fff;
            padding: 48px 0 24px;
        }

        .footer-heading {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            color: #fff;
            line-height: 1.4;
        }

        .footer-link {
            color: #9AA9C2;
            font-size: 14px;
            line-height: 1.8;
            transition: color 0.2s ease;
            display: inline-block;
            padding: 2px 0;
        }

        .footer-link:hover {
            color: #FFFFFF;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 40px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 20px;
            font-size: 13px;
            color: #9AA9C2;
            line-height: 1.6;
            align-items: center;
        }

        .footer-bottom a {
            color: #9AA9C2;
            transition: color 0.2s ease;
        }

        .footer-bottom a:hover {
            color: #FFFFFF;
        }

        /* Mobile specifics */
        @media (max-width: 1023px) {
            .sidebar-wrapper {
                display: none;
            }

            .mobile-header {
                display: flex;
            }

            .main-content-with-sidebar {
                margin-left: 0 !important;
                padding-top: 64px;
            }

            .faq-answer-inner {
                padding: 0 16px 16px 16px;
            }

            .faq-question {
                padding: 14px 16px;
                gap: 10px;
            }

            .faq-number {
                font-size: 12px;
                min-width: 32px;
                padding: 3px 6px;
            }
        }

        @media (min-width: 1024px) {
            .mobile-header,
            .drawer-menu,
            .drawer-overlay {
                display: none;
            }

            .main-content-with-sidebar {
                margin-left: var(--sidebar-width);
            }
        }

        @media (max-width: 640px) {
            .faq-tab-btn {
                padding: 8px 14px;
                font-size: 13px;
                min-height: 36px;
            }

            .step-card {
                padding: 16px 14px;
            }

            .step-number {
                font-size: 28px;
            }

            .hero-cover-wrap img {
                min-height: 160px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #0F5FFF;
            --primary-hover: #0A4BD6;
            --light-blue: #E8F0FE;
            --accent: #00A6A6;
            --bg-light: #F5F7FA;
            --body-text: #172033;
            --muted-text: #5B6B85;
            --border-light: #E8EDF6;
            --footer-dark: #0E1A2B;
            --card-radius: 16px;
            --btn-radius: 12px;
            --shadow-card: 0 4px 16px rgba(15, 95, 255, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(15, 95, 255, 0.12);
            --focus-ring: 3px solid rgba(15, 95, 255, 0.25);
            --section-gap-desktop: 88px;
            --section-gap-mobile: 52px;
            --card-padding: 28px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            color: var(--body-text);
            background: var(--bg-light);
            line-height: 1.7;
            font-size: 15px;
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container-main {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

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

        @media (max-width: 640px) {
            .section-gap {
                padding-top: var(--section-gap-mobile);
                padding-bottom: var(--section-gap-mobile);
            }
        }

        .card-base {
            background: #FFFFFF;
            border-radius: var(--card-radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
        }

        .card-base:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(15, 95, 255, 0.18);
        }

        .card-base:focus-within {
            outline: var(--focus-ring);
            outline-offset: 2px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: var(--btn-radius);
            padding: 14px 20px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            min-height: 44px;
            min-width: 44px;
            border: 2px solid transparent;
            cursor: pointer;
            transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 4px 12px rgba(15, 95, 255, 0.25);
        }

        .btn-primary:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 3px;
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #FFFFFF;
            color: var(--primary);
            border-radius: var(--btn-radius);
            padding: 14px 20px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            min-height: 44px;
            min-width: 44px;
            border: 2px solid var(--primary);
            cursor: pointer;
            transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease;
            white-space: nowrap;
        }

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

        .btn-secondary:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 3px;
        }

        .btn-secondary:active {
            transform: translateY(1px);
        }

        .badge-tag {
            display: inline-block;
            background: var(--light-blue);
            color: var(--primary);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
        }

        .badge-accent {
            display: inline-block;
            background: rgba(0, 166, 166, 0.1);
            color: var(--accent);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 600;
            line-height: 1.4;
        }

        .badge-gold {
            display: inline-block;
            background: rgba(247, 201, 72, 0.15);
            color: #8B6B00;
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 700;
            line-height: 1.4;
        }

        .badge-gray {
            display: inline-block;
            background: #F0F2F7;
            color: var(--muted-text);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .hero-bg {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: rgba(245, 247, 250, 0.92);
            backdrop-filter: blur(2px);
        }

        /* 左侧侧边栏导航 */
        .sidebar-desktop {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 264px;
            background: #FFFFFF;
            border-right: 1px solid var(--border-light);
            z-index: 40;
            display: flex;
            flex-direction: column;
            padding: 24px 16px;
            overflow-y: auto;
            box-shadow: 2px 0 12px rgba(15, 95, 255, 0.03);
        }

        .sidebar-nav-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            border-radius: 10px;
            color: var(--muted-text);
            font-weight: 500;
            font-size: 15px;
            transition: all 0.2s ease;
            position: relative;
            border-left: 3px solid transparent;
            margin-bottom: 4px;
        }

        .sidebar-nav-item:hover {
            background: var(--light-blue);
            color: var(--primary);
            border-left-color: var(--primary);
        }

        .sidebar-nav-item.active {
            background: var(--light-blue);
            color: var(--primary);
            font-weight: 700;
            border-left-color: var(--primary);
        }

        .sidebar-nav-item.active::after {
            content: '';
            position: absolute;
            left: -16px;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background: var(--primary);
            border-radius: 0 3px 3px 0;
        }

        .main-content {
            margin-left: 264px;
            min-height: 100vh;
        }

        /* 移动端顶部导航 */
        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 50;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            height: 64px;
            padding: 0 16px;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 2px 8px rgba(15, 95, 255, 0.05);
        }

        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(14, 26, 43, 0.5);
            z-index: 45;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.25s ease;
        }

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

        .drawer-menu {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 280px;
            background: #FFFFFF;
            z-index: 46;
            transform: translateX(-100%);
            transition: transform 0.3s ease;
            padding: 20px 16px;
            overflow-y: auto;
            box-shadow: 4px 0 20px rgba(0, 0, 0, 0.08);
        }

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

        .drawer-close {
            background: none;
            border: none;
            color: var(--muted-text);
            font-size: 24px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background 0.2s ease;
        }

        .drawer-close:hover {
            background: var(--light-blue);
        }

        .hamburger-btn {
            background: none;
            border: none;
            color: var(--body-text);
            font-size: 24px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background 0.2s ease;
        }

        .hamburger-btn:hover {
            background: var(--light-blue);
        }

        /* 页脚 */
        .footer-dark {
            background: var(--footer-dark);
            color: #fff;
            padding: 48px 0 24px;
        }

        .footer-heading {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .footer-link {
            color: #9AA9C2;
            font-size: 14px;
            transition: color 0.2s ease;
            display: inline-block;
            padding: 2px 0;
        }

        .footer-link:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 32px;
            padding-top: 16px;
            color: #9AA9C2;
            font-size: 13px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
            align-items: center;
        }

        /* 资源中心特色样式 */
        .resource-hero-img {
            border-radius: var(--card-radius);
            border: 1px solid var(--border-light);
            box-shadow: 0 8px 24px rgba(15, 95, 255, 0.08);
            overflow: hidden;
            position: relative;
        }

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

        .data-quote-card {
            background: linear-gradient(135deg, #0F5FFF 0%, #0A4BD6 100%);
            color: #fff;
            border-radius: var(--card-radius);
            padding: 28px;
            box-shadow: 0 8px 24px rgba(15, 95, 255, 0.2);
        }

        .data-quote-card .big-number {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.5px;
        }

        .resource-list-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-light);
            transition: background 0.2s ease;
            border-radius: 8px;
            padding-left: 8px;
            padding-right: 8px;
        }

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

        .resource-list-item:hover {
            background: var(--light-blue);
        }

        .resource-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--light-blue);
            color: var(--primary);
            font-weight: 700;
            font-size: 15px;
            flex-shrink: 0;
            font-variant-numeric: tabular-nums;
        }

        .image-grid-item {
            border-radius: var(--card-radius);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            position: relative;
        }

        .image-grid-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }

        .image-grid-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .resource-step {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 16px 0;
        }

        .step-dot {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            flex-shrink: 0;
            font-variant-numeric: tabular-nums;
        }

        .step-line {
            flex: 1;
            border-top: 2px dashed var(--border-light);
            margin-top: 16px;
        }

        .step-content {
            flex: 1;
        }

        .status-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 166, 166, 0.1);
            color: var(--accent);
            border-radius: 999px;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 600;
        }

        .status-pill::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }

        .resource-cta-bg {
            background: linear-gradient(180deg, #E8F0FE 0%, #F5F7FA 100%);
            border-radius: var(--card-radius);
            border: 1px solid var(--border-light);
            padding: 36px 32px;
            position: relative;
            overflow: hidden;
        }

        .resource-cta-bg::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(15, 95, 255, 0.06);
            z-index: 0;
        }

        .resource-cta-bg>* {
            position: relative;
            z-index: 1;
        }

        .pagination-dot {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            color: var(--muted-text);
            font-weight: 600;
            font-size: 14px;
            transition: all 0.2s ease;
            cursor: pointer;
        }

        .pagination-dot:hover {
            background: var(--light-blue);
            color: var(--primary);
            border-color: var(--primary);
        }

        .pagination-dot.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .resource-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(15, 95, 255, 0.06);
            color: var(--primary);
            border-radius: 8px;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 600;
        }

        @media (max-width: 1024px) {
            .sidebar-desktop {
                display: none;
            }

            .mobile-header {
                display: flex;
            }

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

            .drawer-overlay,
            .drawer-menu {
                display: block;
            }
        }

        @media (min-width: 1025px) {
            .drawer-overlay,
            .drawer-menu {
                display: none;
            }
        }

        @media (max-width: 640px) {
            .resource-cta-bg {
                padding: 24px 18px;
            }

            .data-quote-card .big-number {
                font-size: 32px;
            }

            .resource-hero-img {
                min-height: 220px;
            }

            .resource-hero-img img {
                min-height: 220px;
            }
        }

        /* 资源中心图文交替布局 */
        .alt-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .alt-layout.reverse {
            grid-template-columns: 1fr 1fr;
        }

        @media (max-width: 768px) {
            .alt-layout,
            .alt-layout.reverse {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        .resource-text-block h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--body-text);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .resource-text-block p {
            color: var(--muted-text);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .resource-text-block .highlight-text {
            color: var(--primary);
            font-weight: 600;
        }

        .resource-image-wrap {
            border-radius: var(--card-radius);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            position: relative;
            min-height: 240px;
        }

        .resource-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 240px;
        }

        .resource-image-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(180deg, rgba(14, 26, 43, 0) 0%, rgba(14, 26, 43, 0.85) 100%);
            color: #fff;
            padding: 16px 18px;
            font-size: 13px;
            font-weight: 500;
        }

/* roulang page: category6 */
:root {
            --primary: #0F5FFF;
            --primary-hover: #0A4BD6;
            --light-blue: #E8F0FE;
            --accent: #00A6A6;
            --bg-light: #F5F7FA;
            --body-text: #172033;
            --muted-text: #5B6B85;
            --border-light: #E8EDF6;
            --footer-dark: #0E1A2B;
            --card-radius: 16px;
            --btn-radius: 12px;
            --shadow-card: 0 4px 16px rgba(15, 95, 255, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(15, 95, 255, 0.12);
            --focus-ring: 3px solid rgba(15, 95, 255, 0.25);
            --section-gap-desktop: 96px;
            --section-gap-mobile: 56px;
            --card-padding: 28px;
            --font-num: 'Segoe UI', 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            color: var(--body-text);
            background: var(--bg-light);
            line-height: 1.7;
            font-size: 15px;
            min-height: 100vh;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container-main {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section-gap {
            padding-top: var(--section-gap-desktop);
            padding-bottom: var(--section-gap-desktop);
        }
        .card-base {
            background: #FFFFFF;
            border-radius: var(--card-radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
        }
        .card-base:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(15, 95, 255, 0.18);
        }
        .card-base:focus-within {
            outline: var(--focus-ring);
            outline-offset: 2px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: var(--btn-radius);
            padding: 14px 20px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            min-height: 44px;
            min-width: 44px;
            border: 2px solid transparent;
            cursor: pointer;
            transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 4px 12px rgba(15, 95, 255, 0.25);
        }
        .btn-primary:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 3px;
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #FFFFFF;
            color: var(--primary);
            border-radius: var(--btn-radius);
            padding: 14px 20px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            min-height: 44px;
            min-width: 44px;
            border: 2px solid var(--primary);
            cursor: pointer;
            transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease;
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: var(--light-blue);
            color: var(--primary-hover);
        }
        .btn-secondary:focus-visible {
            outline: var(--focus-ring);
            outline-offset: 3px;
        }
        .btn-secondary:active {
            transform: translateY(1px);
        }
        .badge-tag {
            display: inline-block;
            background: var(--light-blue);
            color: var(--primary);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
        }
        .badge-accent {
            display: inline-block;
            background: rgba(0, 166, 166, 0.1);
            color: var(--accent);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 600;
            line-height: 1.4;
        }
        .badge-gold {
            display: inline-block;
            background: rgba(247, 201, 72, 0.15);
            color: #8B6B00;
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 700;
            line-height: 1.4;
        }
        .badge-gray {
            display: inline-block;
            background: #F0F2F7;
            color: var(--muted-text);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .hero-bg {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .hero-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(255, 255, 255, 0.89);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .sidebar-nav-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--muted-text);
            transition: all 0.2s ease;
            position: relative;
            border-left: 3px solid transparent;
        }
        .sidebar-nav-item:hover {
            background: var(--light-blue);
            color: var(--primary);
            border-left-color: var(--primary);
        }
        .sidebar-nav-item.active {
            background: var(--light-blue);
            color: var(--primary);
            font-weight: 700;
            border-left-color: var(--primary);
        }
        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-light);
            border-radius: 10px;
            background: #FFFFFF;
            color: var(--body-text);
            font-size: 15px;
            line-height: 1.5;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            outline: none;
            min-height: 48px;
        }
        .form-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 95, 255, 0.12);
        }
        .form-input::placeholder {
            color: #9AA9C2;
        }
        .form-label {
            display: block;
            font-weight: 600;
            font-size: 14px;
            color: var(--body-text);
            margin-bottom: 6px;
        }
        .benefit-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .benefit-item:last-child {
            border-bottom: none;
        }
        .benefit-icon {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            background: var(--light-blue);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
        }
        .step-card {
            background: #FFFFFF;
            border-radius: var(--card-radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            padding: 24px;
            position: relative;
            height: 100%;
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: 12px;
            font-weight: 800;
            font-size: 18px;
            font-family: var(--font-num);
            margin-bottom: 16px;
        }
        .faq-item {
            background: #FFFFFF;
            border-radius: var(--card-radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.2s ease;
        }
        .faq-item:hover {
            border-color: rgba(15, 95, 255, 0.2);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--body-text);
            text-align: left;
            background: transparent;
            border: none;
            gap: 16px;
        }
        .faq-question:hover {
            background: var(--light-blue);
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--muted-text);
            font-size: 15px;
            line-height: 1.8;
            border-left: 2px solid var(--primary);
            margin-left: 24px;
            margin-right: 24px;
            background: #FAFBFE;
            border-radius: 0 0 8px 8px;
        }
        .faq-icon {
            flex-shrink: 0;
            color: var(--primary);
            font-weight: 800;
            font-size: 20px;
            transition: transform 0.2s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .footer-link {
            color: #9AA9C2;
            font-size: 14px;
            transition: color 0.2s ease;
        }
        .footer-link:hover {
            color: #FFFFFF;
        }
        .footer-heading {
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 32px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            color: #7A8AA5;
            font-size: 13px;
            align-items: center;
            justify-content: center;
            text-align: center;
        }
        .trust-bar-item {
            text-align: center;
            padding: 20px;
            background: #FFFFFF;
            border-radius: var(--card-radius);
            border: 1px solid var(--border-light);
        }
        .trust-bar-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            font-family: var(--font-num);
            line-height: 1.2;
        }
        .trust-bar-label {
            font-size: 14px;
            color: var(--muted-text);
            margin-top: 6px;
        }
        .resource-card-link {
            display: block;
            background: #FFFFFF;
            border-radius: var(--card-radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            padding: 24px;
            transition: all 0.25s ease;
            height: 100%;
        }
        .resource-card-link:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(15, 95, 255, 0.2);
        }

        /* Desktop sidebar layout */
        .desktop-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 260px;
            height: 100vh;
            background: #FFFFFF;
            border-right: 1px solid var(--border-light);
            z-index: 50;
            display: flex;
            flex-direction: column;
            padding: 20px 14px;
            overflow-y: auto;
        }
        .main-content-with-sidebar {
            margin-left: 260px;
            min-height: 100vh;
        }
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 62px;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            z-index: 60;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            left: -280px;
            width: 260px;
            height: 100vh;
            background: #FFFFFF;
            z-index: 70;
            transition: left 0.3s ease;
            padding: 20px 14px;
            flex-direction: column;
            box-shadow: 4px 0 24px rgba(0, 0, 0, 0.1);
        }
        .mobile-drawer.open {
            left: 0;
        }
        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(14, 26, 43, 0.5);
            z-index: 65;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .mobile-overlay.show {
            display: block;
            opacity: 1;
        }

        @media (max-width: 1024px) {
            .desktop-sidebar {
                display: none;
            }
            .main-content-with-sidebar {
                margin-left: 0;
                padding-top: 62px;
            }
            .mobile-topbar {
                display: flex;
            }
            .mobile-drawer {
                display: flex;
            }
            .section-gap {
                padding-top: var(--section-gap-mobile);
                padding-bottom: var(--section-gap-mobile);
            }
        }
        @media (max-width: 640px) {
            .trust-bar-number {
                font-size: 28px;
            }
            .hero-metrics {
                grid-template-columns: 1fr 1fr !important;
            }
            .form-grid-2col {
                grid-template-columns: 1fr !important;
            }
            .benefit-item {
                flex-direction: column;
                gap: 8px;
            }
            .faq-question {
                padding: 16px 16px;
                font-size: 14px;
            }
            .faq-answer {
                padding: 0 16px 16px;
                margin-left: 16px;
                margin-right: 16px;
                font-size: 14px;
            }
        }

        .form-card-highlight {
            background: linear-gradient(135deg, #FFFFFF 0%, #F7FAFF 100%);
            border-radius: var(--card-radius);
            border: 1px solid var(--border-light);
            box-shadow: 0 8px 32px rgba(15, 95, 255, 0.1);
            padding: 32px;
        }
        .accordion-body {
            display: none;
        }
        .faq-item.open .accordion-body {
            display: block;
        }
        .number-font {
            font-family: var(--font-num);
            font-variant-numeric: tabular-nums;
        }
        .lead-text {
            font-size: 17px;
            color: var(--muted-text);
            line-height: 1.9;
            max-width: 680px;
        }