/* roulang page: index */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-deep: #1E40AF;
            --primary-light: #3B82F6;
            --accent: #F59E0B;
            --accent-light: #FBBF24;
            --success: #10B981;
            --ink: #0F172A;
            --ink-soft: #1E293B;
            --text: #334155;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --bg: #FFFFFF;
            --bg-alt: #F8FAFC;
            --bg-blue: #F1F5F9;
            --border: #E2E8F0;
            --border-light: #EEF2F6;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-pill: 999px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, .06), 0 4px 16px rgba(15, 23, 42, .06);
            --shadow-md: 0 4px 12px rgba(15, 23, 42, .08), 0 8px 24px rgba(37, 99, 235, .10);
            --shadow-lg: 0 8px 24px rgba(37, 99, 235, .12), 0 16px 40px rgba(15, 23, 42, .10);
            --shadow-nav: 0 2px 12px rgba(30, 64, 175, .18);
            --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 180ms ease;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), background var(--transition), opacity var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        :focus-visible {
            outline: 3px solid rgba(37, 99, 235, .45);
            outline-offset: 2px;
            border-radius: 6px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--bg-alt);
        }

        .section-blue {
            background: linear-gradient(180deg, #F8FAFC 0%, #F1F5F9 100%);
        }

        .section-tight {
            padding: 56px 0;
        }

        .section-header {
            max-width: 720px;
            margin: 0 auto 48px;
            text-align: center;
        }

        .section-header.left-align {
            text-align: left;
            margin-left: 0;
            max-width: 640px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 16px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .3px;
            background: rgba(37, 99, 235, .08);
            color: var(--primary);
            margin-bottom: 16px;
        }

        .section-tag.accent {
            background: rgba(245, 158, 11, .12);
            color: #B45309;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: -.3px;
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 720px;
            margin: 0 auto;
        }

        .section-header.left-align .section-desc {
            margin-left: 0;
        }

        .grid {
            display: grid;
            gap: 24px;
        }

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

        .grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }

        .grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .grid-6 {
            grid-template-columns: repeat(6, 1fr);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
            letter-spacing: .2px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(37, 99, 235, .25);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(37, 99, 235, .35);
        }

        .btn-accent {
            background: var(--accent);
            color: #1E293B;
            box-shadow: 0 2px 8px rgba(245, 158, 11, .3);
        }

        .btn-accent:hover {
            background: #D97706;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(245, 158, 11, .4);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover {
            background: rgba(37, 99, 235, .06);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-outline-white {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, .8);
            color: #fff;
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, .15);
            border-color: #fff;
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-ghost-white {
            background: rgba(255, 255, 255, .18);
            color: #fff;
            backdrop-filter: blur(4px);
        }

        .btn-ghost-white:hover {
            background: rgba(255, 255, 255, .28);
            color: #fff;
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }

        .btn-lg {
            padding: 14px 36px;
            font-size: 16px;
        }

        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 15px;
        }

        .text-link:hover {
            text-decoration: underline;
        }

        .card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(37, 99, 235, .25);
        }

        .card-body {
            padding: 24px 28px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: .3px;
            background: rgba(37, 99, 235, .08);
            color: var(--primary);
        }

        .badge-accent {
            background: rgba(245, 158, 11, .12);
            color: #B45309;
        }

        .badge-green {
            background: rgba(16, 185, 129, .1);
            color: #047857;
        }

        .badge-muted {
            background: #F1F5F9;
            color: var(--text-muted);
        }

        .divider {
            height: 1px;
            background: var(--border-light);
            margin: 24px 0;
        }

        /* Header / Navigation */
        .site-header {
            background: linear-gradient(135deg, #1E40AF 0%, #2563EB 55%, #3B82F6 100%);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-nav);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 19px;
            font-weight: 700;
            letter-spacing: -.3px;
            white-space: nowrap;
        }

        .logo:hover {
            color: #fff;
            opacity: .9;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 9px;
            background: rgba(255, 255, 255, .18);
            font-size: 18px;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 6px;
            color: rgba(255, 255, 255, .88);
            font-size: 15px;
            font-weight: 500;
            letter-spacing: .2px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .main-nav a:hover {
            background: rgba(255, 255, 255, .14);
            color: #fff;
        }

        .main-nav a.active {
            background: rgba(255, 255, 255, .16);
            color: #fff;
            box-shadow: inset 0 -2px 0 #fff;
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            padding: 8px;
            border-radius: 8px;
            background: rgba(255, 255, 255, .12);
            transition: background var(--transition);
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, .22);
        }

        .hamburger span {
            display: block;
            height: 2px;
            width: 100%;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition);
        }

        .mobile-menu {
            display: none;
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 16px 24px;
            box-shadow: 0 12px 32px rgba(15, 23, 42, .12);
        }

        .mobile-menu a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            color: var(--ink);
            font-size: 16px;
            font-weight: 500;
            border-bottom: 1px solid var(--border-light);
            transition: color var(--transition);
        }

        .mobile-menu a:last-child {
            border-bottom: none;
        }

        .mobile-menu a:hover {
            color: var(--primary);
        }

        .mobile-menu a.active {
            color: var(--primary);
            font-weight: 600;
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 30%, #1D4ED8 65%, #2563EB 100%);
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/fe6f4d4ae24e6271.webp');
            background-size: cover;
            background-position: center;
            opacity: .22;
            z-index: 1;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, .82) 0%, rgba(30, 58, 138, .65) 50%, rgba(37, 99, 235, .5) 100%);
            z-index: 2;
        }

        .hero-grid-overlay {
            position: absolute;
            inset: 0;
            z-index: 3;
            background-image:
                linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 5;
            width: 100%;
            padding: 80px 0 100px;
        }

        .hero-series-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 28px;
        }

        .hero-series-nav a {
            padding: 7px 18px;
            border-radius: var(--radius-pill);
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            color: rgba(255, 255, 255, .9);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .2px;
            backdrop-filter: blur(4px);
            transition: all var(--transition);
        }

        .hero-series-nav a:hover {
            background: rgba(255, 255, 255, .25);
            border-color: rgba(255, 255, 255, .45);
            color: #fff;
            transform: translateY(-1px);
        }

        .hero-title {
            font-size: 42px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -.5px;
            line-height: 1.22;
            margin-bottom: 20px;
            max-width: 760px;
        }

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

        .hero-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, .85);
            line-height: 1.85;
            max-width: 680px;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 36px;
        }

        .hero-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .hero-trust-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 7px 16px;
            border-radius: var(--radius-pill);
            background: rgba(255, 255, 255, .08);
            color: rgba(255, 255, 255, .8);
            font-size: 13px;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, .15);
        }

        .hero-trust-item .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--success);
            flex-shrink: 0;
        }

        /* Feature icon cards */
        .icon-circle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(37, 99, 235, .08);
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 16px;
            flex-shrink: 0;
        }

        .icon-circle.accent {
            background: rgba(245, 158, 11, .1);
            color: #B45309;
        }

        .icon-circle.green {
            background: rgba(16, 185, 129, .1);
            color: #047857;
        }

        .icon-circle.indigo {
            background: rgba(79, 70, 229, .08);
            color: #4F46E5;
        }

        /* Service cards */
        .service-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 26px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .service-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(37, 99, 235, .3);
        }

        .service-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 8px;
            letter-spacing: -.2px;
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            flex-grow: 1;
            margin-bottom: 14px;
        }

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

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

        .stat-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: all var(--transition);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -.5px;
            line-height: 1.2;
            margin-bottom: 6px;
        }

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

        /* Process steps */
        .process-flow {
            display: flex;
            align-items: stretch;
            gap: 0;
            position: relative;
        }

        .process-step {
            flex: 1;
            text-align: center;
            position: relative;
            padding: 0 12px;
        }

        .process-step::after {
            content: '';
            position: absolute;
            top: 22px;
            left: calc(50% + 22px);
            width: calc(100% - 44px);
            height: 2px;
            background: var(--border);
            z-index: 1;
        }

        .process-step:last-child::after {
            display: none;
        }

        .step-dot {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 17px;
            font-weight: 700;
            margin: 0 auto 14px;
            position: relative;
            z-index: 2;
            box-shadow: 0 4px 12px rgba(37, 99, 235, .3);
        }

        .process-step h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 6px;
        }

        .process-step p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.65;
            max-width: 200px;
            margin: 0 auto;
        }

        /* Case cards */
        .case-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .case-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(37, 99, 235, .3);
        }

        .case-cover {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
        }

        .case-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .case-card:hover .case-cover img {
            transform: scale(1.04);
        }

        .case-result {
            position: absolute;
            top: 12px;
            right: 12px;
        }

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

        .case-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 8px;
            letter-spacing: -.2px;
        }

        .case-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            flex-grow: 1;
            margin-bottom: 14px;
        }

        /* News list */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .news-item {
            display: flex;
            gap: 20px;
            padding: 22px 24px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .news-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, .25);
            transform: translateX(3px);
        }

        .news-date {
            flex-shrink: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-width: 72px;
            padding: 12px 10px;
            background: var(--bg-blue);
            border-radius: 10px;
            font-weight: 700;
            color: var(--primary);
            font-size: 14px;
            line-height: 1.4;
            text-align: center;
            height: fit-content;
        }

        .news-date .day {
            font-size: 22px;
            font-weight: 800;
            letter-spacing: -.5px;
        }

        .news-content {
            flex: 1;
        }

        .news-content h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 7px;
            letter-spacing: -.2px;
            line-height: 1.45;
        }

        .news-content p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 10px;
        }

        /* Partner logos */
        .partner-grid {
            display: grid;
            grid-template-columns: repeat(8, 1fr);
            gap: 16px;
        }

        .partner-item {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 22px 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            background: #fff;
            color: var(--text-muted);
            font-size: 13px;
            font-weight: 500;
            text-align: center;
            transition: all var(--transition);
            min-height: 76px;
            letter-spacing: .3px;
        }

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

        /* FAQ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item.open {
            border-color: rgba(37, 99, 235, .35);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 18px 22px;
            background: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            text-align: left;
            letter-spacing: -.2px;
            transition: color var(--transition);
        }

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

        .faq-icon {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--bg-blue);
            color: var(--primary);
            font-size: 16px;
            font-weight: 700;
            transition: all var(--transition);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .25s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* Guarantee bar */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .guarantee-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 20px;
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            transition: all var(--transition);
        }

        .guarantee-item:hover {
            border-color: rgba(37, 99, 235, .2);
            box-shadow: var(--shadow-sm);
        }

        .guarantee-icon {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(37, 99, 235, .08);
            color: var(--primary);
            font-size: 18px;
        }

        .guarantee-item h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 4px;
        }

        .guarantee-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* Contact form */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }

        .contact-form {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-sm);
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 6px;
            letter-spacing: .2px;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid #CBD5E1;
            border-radius: var(--radius-btn);
            font-size: 15px;
            color: var(--text);
            background: #fff;
            transition: all var(--transition);
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, .2);
            outline: none;
        }

        .form-group textarea {
            resize: vertical;
            min-height: 110px;
        }

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .contact-info-card {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 18px 20px;
            background: var(--bg-alt);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
        }

        .contact-info-card .icon-box {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            font-size: 17px;
        }

        .contact-info-card h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 3px;
        }

        .contact-info-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* Timeline */
        .timeline {
            position: relative;
            padding-left: 24px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 6px;
            bottom: 6px;
            width: 2px;
            background: var(--border);
        }

        .timeline-item {
            position: relative;
            padding-left: 20px;
            margin-bottom: 20px;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-dot {
            position: absolute;
            left: -24px;
            top: 6px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid #fff;
            box-shadow: 0 0 0 2px rgba(37, 99, 235, .3);
        }

        .timeline-item h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 4px;
        }

        .timeline-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        .timeline-item .time {
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            margin-bottom: 4px;
        }

        /* Mobile app section */
        .app-showcase {
            display: flex;
            align-items: center;
            gap: 48px;
        }

        .app-image {
            flex-shrink: 0;
            width: 300px;
            aspect-ratio: 9/16;
            border-radius: 20px;
            overflow: hidden;
            border: 6px solid #fff;
            box-shadow: var(--shadow-md);
        }

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

        .app-content {
            flex: 1;
        }

        .app-feature-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 18px;
        }

        .app-feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--text);
            line-height: 1.7;
        }

        .app-feature-list li::before {
            content: '✓';
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(16, 185, 129, .12);
            color: #047857;
            font-size: 12px;
            font-weight: 700;
            margin-top: 3px;
        }

        /* Footer */
        .site-footer {
            background: #0F172A;
            color: #94A3B8;
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: -.3px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            color: #94A3B8;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: .2px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col a {
            color: #94A3B8;
            font-size: 14px;
            transition: color var(--transition);
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
        }

        .footer-bottom a {
            color: #94A3B8;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .grid-4,
            .grid-6 {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .partner-grid {
                grid-template-columns: repeat(4, 1fr);
            }
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero-title {
                font-size: 34px;
            }
            .process-flow {
                flex-wrap: wrap;
                gap: 18px;
            }
            .process-step {
                flex: 1 1 30%;
                padding: 0 6px;
            }
            .process-step::after {
                display: none;
            }
            .app-showcase {
                flex-direction: column;
                text-align: center;
            }
            .app-image {
                width: 220px;
            }
            .contact-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-tight {
                padding: 40px 0;
            }
            .hero {
                min-height: 520px;
            }
            .hero-content {
                padding: 56px 0 72px;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .grid-2,
            .grid-3,
            .grid-4,
            .grid-6 {
                grid-template-columns: 1fr;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .partner-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .guarantee-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .section-title {
                font-size: 24px;
            }
            .main-nav {
                display: none;
            }
            .header-cta .btn {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-menu.show {
                display: block;
            }
            .news-item {
                flex-direction: column;
                gap: 10px;
            }
            .news-date {
                flex-direction: row;
                min-width: auto;
                padding: 6px 14px;
                font-size: 13px;
                gap: 6px;
            }
            .news-date .day {
                font-size: 16px;
            }
            .contact-form {
                padding: 20px;
            }
            .process-flow {
                gap: 10px;
            }
            .process-step {
                flex: 1 1 45%;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-title {
                font-size: 24px;
            }
            .hero-desc {
                font-size: 14px;
            }
            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-number {
                font-size: 28px;
            }
            .process-flow {
                flex-direction: column;
            }
            .process-step {
                flex: 1 1 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-deep: #1E40AF;
            --primary-light: #3B82F6;
            --accent: #F59E0B;
            --accent-light: #FBBF24;
            --success: #10B981;
            --ink: #0F172A;
            --ink-soft: #1E293B;
            --text: #334155;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --bg: #FFFFFF;
            --bg-alt: #F8FAFC;
            --bg-blue: #F1F5F9;
            --border: #E2E8F0;
            --border-light: #EEF2F6;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-pill: 999px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, .06), 0 4px 16px rgba(15, 23, 42, .06);
            --shadow-md: 0 4px 12px rgba(15, 23, 42, .08), 0 8px 24px rgba(37, 99, 235, .10);
            --shadow-lg: 0 8px 24px rgba(37, 99, 235, .12), 0 16px 40px rgba(15, 23, 42, .10);
            --shadow-nav: 0 2px 12px rgba(30, 64, 175, .18);
            --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 180ms ease;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        main {
            flex: 1;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), background var(--transition), opacity var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 72px 0;
        }

        .section-alt {
            background: var(--bg-alt);
        }

        .section-blue {
            background: linear-gradient(180deg, #F8FAFC 0%, #F1F5F9 100%);
        }

        .section-tight {
            padding: 48px 0;
        }

        .section-header {
            max-width: 720px;
            margin: 0 auto 40px;
            text-align: center;
        }

        .section-header.left-align {
            text-align: left;
            margin-left: 0;
            max-width: 640px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 16px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .3px;
            background: rgba(37, 99, 235, .08);
            color: var(--primary);
            margin-bottom: 14px;
        }

        .section-tag.accent {
            background: rgba(245, 158, 11, .12);
            color: #B45309;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: -.3px;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 720px;
            margin: 0 auto;
        }

        .section-header.left-align .section-desc {
            margin-left: 0;
        }

        .grid {
            display: grid;
            gap: 24px;
        }

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

        .grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }

        .grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
            letter-spacing: .2px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(37, 99, 235, .25);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(37, 99, 235, .35);
        }

        .btn-primary:focus,
        .btn-outline:focus,
        .btn-accent:focus {
            outline: 3px solid rgba(37, 99, 235, .35);
            outline-offset: 2px;
        }

        .btn-accent {
            background: var(--accent);
            color: #1E293B;
            box-shadow: 0 2px 8px rgba(245, 158, 11, .3);
        }

        .btn-accent:hover {
            background: #D97706;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(245, 158, 11, .4);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover {
            background: rgba(37, 99, 235, .06);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 6px;
        }

        /* Header / Navigation */
        .site-header {
            background: linear-gradient(135deg, #1E40AF 0%, #2563EB 60%, #3B82F6 100%);
            box-shadow: var(--shadow-nav);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            letter-spacing: .3px;
            text-decoration: none;
            white-space: nowrap;
        }

        .brand-logo:hover {
            color: #fff;
            opacity: .9;
        }

        .brand-logo .logo-icon {
            font-size: 22px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .main-nav a {
            color: rgba(255, 255, 255, .88);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 6px;
            transition: all var(--transition);
            letter-spacing: .2px;
            position: relative;
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, .14);
        }

        .main-nav a.active {
            color: #fff;
            background: rgba(255, 255, 255, .16);
            font-weight: 600;
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--accent-light);
            border-radius: 2px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            background: var(--accent);
            color: #1E293B !important;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: #D97706 !important;
            color: #fff !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(245, 158, 11, .4);
        }

        .nav-cta.active::after {
            display: none;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            padding: 8px;
            border-radius: 8px;
            background: rgba(255, 255, 255, .1);
            transition: background var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, .2);
        }

        .nav-toggle span {
            display: block;
            width: 100%;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition);
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

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

        .breadcrumb a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        .breadcrumb .sep {
            color: var(--text-light);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--text);
            font-weight: 600;
        }

        /* Category Header */
        .category-hero {
            position: relative;
            background: linear-gradient(135deg, #1E40AF 0%, #2563EB 55%, #3B82F6 100%);
            min-height: 340px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/fe6f4d4ae24e6271.webp');
            background-size: cover;
            background-position: center;
            opacity: .18;
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 23, 42, .25) 0%, rgba(30, 64, 175, .45) 100%);
            pointer-events: none;
        }

        .category-hero .container {
            position: relative;
            z-index: 1;
            width: 100%;
            color: #fff;
        }

        .category-hero .breadcrumb {
            color: rgba(255, 255, 255, .75);
            margin-bottom: 20px;
        }

        .category-hero .breadcrumb a {
            color: rgba(255, 255, 255, .9);
        }

        .category-hero .breadcrumb a:hover {
            color: #fff;
        }

        .category-hero .breadcrumb .sep {
            color: rgba(255, 255, 255, .5);
        }

        .category-hero .breadcrumb .current {
            color: #fff;
        }

        .category-hero h1 {
            font-size: 38px;
            font-weight: 800;
            letter-spacing: -.5px;
            line-height: 1.25;
            margin-bottom: 12px;
            color: #fff;
        }

        .category-hero .hero-sub {
            font-size: 17px;
            color: rgba(255, 255, 255, .85);
            line-height: 1.7;
            max-width: 680px;
            margin-bottom: 20px;
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .hero-meta .meta-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            background: rgba(255, 255, 255, .14);
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            backdrop-filter: blur(4px);
        }

        /* Cards */
        .card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }

        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: rgba(37, 99, 235, .2);
        }

        .card-media {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-blue);
        }

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

        .card:hover .card-media img {
            transform: scale(1.03);
        }

        .card-body {
            padding: 20px 22px;
        }

        .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 10px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: .2px;
            background: rgba(37, 99, 235, .08);
            color: var(--primary);
            white-space: nowrap;
        }

        .badge.accent {
            background: rgba(245, 158, 11, .12);
            color: #B45309;
        }

        .badge.success {
            background: rgba(16, 185, 129, .1);
            color: #047857;
        }

        .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.45;
            margin-bottom: 8px;
        }

        .card-title a {
            color: var(--ink);
        }

        .card-title a:hover {
            color: var(--primary);
        }

        .card-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-light);
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
        }

        .card-meta .date {
            font-weight: 500;
        }

        .read-more {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            transition: gap var(--transition);
        }

        .read-more:hover {
            color: var(--primary-dark);
            gap: 8px;
        }

        /* Data metrics section */
        .metrics-panel {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 28px 30px;
        }

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

        .metric-item {
            text-align: center;
            padding: 18px 12px;
            border-radius: 10px;
            background: var(--bg-blue);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

        .metric-item:hover {
            border-color: rgba(37, 99, 235, .25);
            box-shadow: var(--shadow-sm);
        }

        .metric-value {
            font-size: 30px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -.5px;
            line-height: 1.2;
            margin-bottom: 4px;
        }

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

        /* Analysis list */
        .analysis-list {
            display: grid;
            gap: 20px;
        }

        .analysis-item {
            display: grid;
            grid-template-columns: 200px 1fr;
            gap: 24px;
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }

        .analysis-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: rgba(37, 99, 235, .2);
        }

        .analysis-item .item-media {
            position: relative;
            min-height: 160px;
            background: var(--bg-blue);
            overflow: hidden;
        }

        .analysis-item .item-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
            transition: transform var(--transition);
        }

        .analysis-item:hover .item-media img {
            transform: scale(1.04);
        }

        .analysis-item .item-body {
            padding: 20px 24px 20px 8px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .analysis-item .item-date {
            font-size: 13px;
            color: var(--text-light);
            font-weight: 500;
            margin-bottom: 6px;
            letter-spacing: .3px;
        }

        .analysis-item .item-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .analysis-item .item-title a {
            color: var(--ink);
        }

        .analysis-item .item-title a:hover {
            color: var(--primary);
        }

        .analysis-item .item-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
            max-width: 720px;
        }

        .analysis-item .item-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .analysis-item .item-actions .badge {
            margin-right: auto;
        }

        /* Tips */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .tip-card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 24px 26px;
            transition: all var(--transition);
        }

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

        .tip-icon {
            font-size: 28px;
            margin-bottom: 12px;
            display: block;
        }

        .tip-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .tip-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(37, 99, 235, .2);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            cursor: pointer;
            transition: background var(--transition);
            text-align: left;
            width: 100%;
        }

        .faq-question:hover {
            background: var(--bg-alt);
        }

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

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease, padding 300ms ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, #1E40AF 0%, #2563EB 60%, #3B82F6 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/7f06376a42aff8b8.jpg');
            background-size: cover;
            background-position: center;
            opacity: .12;
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 720px;
        }

        .cta-section h2 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            letter-spacing: -.3px;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, .82);
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-white-ghost {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, .6);
            color: #fff;
        }

        .btn-white-ghost:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-1px);
        }

        /* Footer */
        .site-footer {
            background: var(--ink);
            color: rgba(255, 255, 255, .7);
            padding: 48px 0 0;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
        }

        .footer-brand h3 {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, .6);
            max-width: 320px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col a,
        .footer-col span {
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
            transition: color var(--transition);
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 16px 0 20px;
            font-size: 13px;
            color: rgba(255, 255, 255, .45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, .55);
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 26px;
            }
            .category-hero h1 {
                font-size: 32px;
            }
            .metrics-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .tips-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .analysis-item {
                grid-template-columns: 160px 1fr;
                gap: 16px;
            }
            .analysis-item .item-body {
                padding: 16px 16px 16px 4px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 18px;
            }
            .site-header .container {
                height: 56px;
            }
            .brand-logo {
                font-size: 16px;
            }
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                position: absolute;
                top: 56px;
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: stretch;
                background: #fff;
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 12px 12px;
                padding: 12px 16px;
                gap: 4px;
                display: none;
                max-height: 70vh;
                overflow-y: auto;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                color: var(--ink-soft);
                font-weight: 500;
                padding: 12px 16px;
                border-radius: 8px;
                text-align: left;
            }
            .main-nav a:hover {
                background: var(--bg-alt);
                color: var(--primary);
            }
            .main-nav a.active {
                background: rgba(37, 99, 235, .08);
                color: var(--primary);
                font-weight: 600;
            }
            .main-nav a.active::after {
                display: none;
            }
            .nav-cta {
                justify-content: center;
                margin-top: 6px;
            }
            .category-hero {
                min-height: 280px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero .hero-sub {
                font-size: 15px;
            }
            .grid-2,
            .grid-3,
            .grid-4,
            .grid-6 {
                grid-template-columns: 1fr;
            }
            .analysis-item {
                grid-template-columns: 1fr;
            }
            .analysis-item .item-media {
                min-height: 180px;
                position: relative;
                aspect-ratio: 16 / 9;
            }
            .analysis-item .item-media img {
                position: absolute;
            }
            .analysis-item .item-body {
                padding: 16px 18px 18px;
            }
            .metrics-list {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .tips-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
        }

        @media (max-width: 520px) {
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 22px;
            }
            .category-hero {
                min-height: 240px;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .hero-meta {
                gap: 6px;
            }
            .hero-meta .meta-chip {
                font-size: 12px;
                padding: 4px 10px;
            }
            .metrics-list {
                grid-template-columns: 1fr;
            }
            .metric-value {
                font-size: 24px;
            }
            .card-body {
                padding: 16px 18px;
            }
            .btn {
                padding: 10px 22px;
                font-size: 14px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-deep: #1E40AF;
            --primary-light: #3B82F6;
            --accent: #F59E0B;
            --accent-light: #FBBF24;
            --success: #10B981;
            --ink: #0F172A;
            --ink-soft: #1E293B;
            --text: #334155;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --bg: #FFFFFF;
            --bg-alt: #F8FAFC;
            --bg-blue: #F1F5F9;
            --border: #E2E8F0;
            --border-light: #EEF2F6;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-pill: 999px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, .06), 0 4px 16px rgba(15, 23, 42, .06);
            --shadow-md: 0 4px 12px rgba(15, 23, 42, .08), 0 8px 24px rgba(37, 99, 235, .10);
            --shadow-lg: 0 8px 24px rgba(37, 99, 235, .12), 0 16px 40px rgba(15, 23, 42, .10);
            --shadow-nav: 0 2px 12px rgba(30, 64, 175, .18);
            --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 180ms ease;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), background var(--transition), opacity var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--bg-alt);
        }

        .section-blue {
            background: linear-gradient(180deg, #F8FAFC 0%, #F1F5F9 100%);
        }

        .section-tight {
            padding: 56px 0;
        }

        .section-header {
            max-width: 720px;
            margin: 0 auto 48px;
            text-align: center;
        }

        .section-header.left-align {
            text-align: left;
            margin-left: 0;
            max-width: 640px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 16px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .3px;
            background: rgba(37, 99, 235, .08);
            color: var(--primary);
            margin-bottom: 16px;
        }

        .section-tag.accent {
            background: rgba(245, 158, 11, .12);
            color: #B45309;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: -.3px;
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 720px;
            margin: 0 auto;
        }

        .section-header.left-align .section-desc {
            margin-left: 0;
        }

        .grid {
            display: grid;
            gap: 24px;
        }

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

        .grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }

        .grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
            letter-spacing: .2px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(37, 99, 235, .25);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(37, 99, 235, .35);
        }

        .btn-accent {
            background: var(--accent);
            color: #1E293B;
            box-shadow: 0 2px 8px rgba(245, 158, 11, .3);
        }

        .btn-accent:hover {
            background: #D97706;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(245, 158, 11, .4);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover {
            background: rgba(37, 99, 235, .06);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }

        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(37, 99, 235, .35);
            outline-offset: 2px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 3px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            line-height: 1.5;
            letter-spacing: .2px;
            white-space: nowrap;
        }

        .badge-blue {
            background: rgba(37, 99, 235, .08);
            color: var(--primary);
        }

        .badge-gold {
            background: rgba(245, 158, 11, .12);
            color: #B45309;
        }

        .badge-green {
            background: rgba(16, 185, 129, .1);
            color: #047857;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: linear-gradient(135deg, #1E40AF 0%, #2563EB 60%, #3B82F6 100%);
            box-shadow: var(--shadow-nav);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            min-height: 64px;
            padding: 0 24px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            letter-spacing: -.2px;
            white-space: nowrap;
        }

        .logo:hover {
            color: #fff;
            opacity: .92;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: rgba(255, 255, 255, .15);
            border-radius: 8px;
            font-size: 18px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 6px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, .88);
            transition: all var(--transition);
            position: relative;
            letter-spacing: .2px;
        }

        .main-nav a:hover {
            background: rgba(255, 255, 255, .14);
            color: #fff;
        }

        .main-nav a.active {
            color: #fff;
            font-weight: 600;
            background: rgba(255, 255, 255, .12);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--accent-light);
            border-radius: 999px;
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            background: var(--accent);
            color: #1E293B;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .header-cta:hover {
            background: #D97706;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(245, 158, 11, .4);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            border-radius: 8px;
            background: rgba(255, 255, 255, .1);
            transition: background var(--transition);
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, .18);
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 999px;
            transition: all var(--transition);
        }

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

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

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

        .mobile-nav {
            display: none;
            background: #fff;
            border-top: 1px solid var(--border);
            box-shadow: 0 8px 24px rgba(15, 23, 42, .08);
        }

        .mobile-nav.open {
            display: block;
        }

        .mobile-nav-inner {
            display: flex;
            flex-direction: column;
            padding: 12px 24px 16px;
        }

        .mobile-nav a {
            padding: 12px 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--ink-soft);
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition);
            border-radius: 6px;
            padding-left: 12px;
        }

        .mobile-nav a:last-child {
            border-bottom: none;
        }

        .mobile-nav a:hover {
            background: var(--bg-blue);
            color: var(--primary);
        }

        .mobile-nav a.active {
            color: var(--primary);
            font-weight: 600;
            background: rgba(37, 99, 235, .06);
        }

        /* Category Hero */
        .category-hero {
            background: linear-gradient(135deg, #F8FAFC 0%, #F1F5F9 55%, #E8EEF6 100%);
            border-bottom: 1px solid var(--border-light);
            padding: 48px 0 40px;
            position: relative;
            overflow: hidden;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(37, 99, 235, .06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

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

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

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

        .breadcrumb .sep {
            color: var(--text-light);
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        .category-hero-content {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .category-hero-text {
            flex: 1;
            min-width: 280px;
        }

        .category-hero h1 {
            font-size: 34px;
            font-weight: 800;
            color: var(--ink);
            letter-spacing: -.5px;
            line-height: 1.25;
            margin-bottom: 12px;
        }

        .category-hero .hero-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 620px;
            margin-bottom: 16px;
        }

        .hero-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-muted);
        }

        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .hero-meta .dot {
            width: 4px;
            height: 4px;
            background: var(--text-light);
            border-radius: 50%;
        }

        /* Card Styles */
        .card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, .25);
            transform: translateY(-2px);
        }

        .card-body {
            padding: 24px;
        }

        .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .card-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* List Item Cards */
        .schedule-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .schedule-item {
            display: flex;
            gap: 20px;
            padding: 20px 24px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            align-items: center;
        }

        .schedule-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, .25);
            transform: translateY(-2px);
        }

        .schedule-date {
            flex-shrink: 0;
            width: 80px;
            text-align: center;
            padding: 12px 8px;
            background: var(--bg-blue);
            border-radius: 8px;
            font-weight: 700;
            color: var(--primary);
            font-size: 14px;
            line-height: 1.4;
            letter-spacing: .3px;
        }

        .schedule-date .day {
            font-size: 18px;
            display: block;
        }

        .schedule-date .month {
            font-size: 12px;
            font-weight: 500;
            color: var(--text-muted);
        }

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

        .schedule-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .schedule-summary {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 10px;
        }

        .schedule-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }

        .schedule-link {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            padding: 8px 16px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--border);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .schedule-link:hover {
            background: rgba(37, 99, 235, .06);
            border-color: var(--primary);
            color: var(--primary-dark);
        }

        /* Info Grid */
        .info-grid {
            display: grid;
            gap: 20px;
            grid-template-columns: repeat(4, 1fr);
        }

        .info-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: all var(--transition);
        }

        .info-card:hover {
            box-shadow: var(--shadow-sm);
            border-color: rgba(37, 99, 235, .2);
        }

        .info-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: rgba(37, 99, 235, .08);
            border-radius: 8px;
            font-size: 20px;
            margin-bottom: 14px;
        }

        .info-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
        }

        .info-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* Tips Section */
        .tips-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 800px;
            margin: 0 auto;
        }

        .tip-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 18px 20px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            transition: all var(--transition);
        }

        .tip-item:hover {
            border-color: rgba(37, 99, 235, .25);
            box-shadow: var(--shadow-sm);
        }

        .tip-num {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            font-size: 14px;
            font-weight: 700;
            margin-top: 2px;
        }

        .tip-content h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 4px;
        }

        .tip-content p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item:hover {
            border-color: rgba(37, 99, 235, .2);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 18px 24px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            background: #fff;
            transition: all var(--transition);
        }

        .faq-question:hover {
            background: var(--bg-alt);
        }

        .faq-arrow {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(37, 99, 235, .08);
            transition: transform var(--transition);
            font-size: 14px;
            color: var(--primary);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease;
        }

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

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* Related Articles */
        .related-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition);
        }

        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(37, 99, 235, .25);
        }

        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .related-card .card-body {
            padding: 20px;
        }

        .related-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .related-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        /* CTA Bar */
        .cta-bar {
            background: linear-gradient(135deg, #1E40AF 0%, #2563EB 70%, #3B82F6 100%);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            color: #fff;
        }

        .cta-bar h2 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: -.3px;
        }

        .cta-bar p {
            font-size: 15px;
            color: rgba(255, 255, 255, .82);
            line-height: 1.7;
            max-width: 520px;
        }

        .cta-bar .btn {
            flex-shrink: 0;
        }

        /* Intro Section with Image */
        .intro-wrapper {
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }

        .intro-text {
            flex: 1;
            min-width: 300px;
        }

        .intro-text p {
            font-size: 16px;
            color: var(--text);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .intro-image {
            flex: 0 0 360px;
            max-width: 360px;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .intro-image img {
            width: 100%;
            height: 260px;
            object-fit: cover;
        }

        /* Footer */
        .site-footer {
            background: #0F172A;
            color: #94A3B8;
            padding: 56px 0 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.3fr;
            gap: 32px;
            padding-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -.2px;
        }

        .footer-brand p {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.8;
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col a {
            color: #94A3B8;
            font-size: 14px;
            transition: color var(--transition);
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-col span {
            color: #94A3B8;
            font-size: 14px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: #64748B;
        }

        .footer-bottom a {
            color: #94A3B8;
            transition: color var(--transition);
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }

            .header-cta {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .section {
                padding: 56px 0;
            }

            .section-title {
                font-size: 24px;
            }

            .category-hero {
                padding: 36px 0 32px;
            }

            .category-hero h1 {
                font-size: 26px;
            }

            .category-hero .hero-desc {
                font-size: 15px;
            }

            .schedule-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 14px;
                padding: 18px;
            }

            .schedule-date {
                flex-direction: row;
                align-items: baseline;
                gap: 6px;
                width: auto;
                padding: 6px 14px;
            }

            .schedule-date .day {
                font-size: 15px;
                display: inline;
            }

            .schedule-date .month {
                font-size: 12px;
                display: inline;
            }

            .schedule-link {
                align-self: flex-end;
            }

            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }

            .info-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .intro-wrapper {
                flex-direction: column;
            }

            .intro-image {
                flex: 1;
                max-width: 100%;
                width: 100%;
            }

            .intro-image img {
                height: 220px;
            }

            .cta-bar {
                padding: 28px 20px;
                flex-direction: column;
                align-items: flex-start;
            }

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

            .footer-brand {
                grid-column: auto;
            }

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

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .header-inner {
                padding: 0 16px;
                min-height: 56px;
            }

            .logo {
                font-size: 16px;
            }

            .category-hero h1 {
                font-size: 22px;
            }

            .section-title {
                font-size: 21px;
            }

            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }

            .schedule-item {
                padding: 14px;
            }

            .schedule-title {
                font-size: 15px;
            }

            .card-body {
                padding: 18px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-deep: #1E40AF;
            --primary-light: #3B82F6;
            --accent: #F59E0B;
            --accent-light: #FBBF24;
            --success: #10B981;
            --ink: #0F172A;
            --ink-soft: #1E293B;
            --text: #334155;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --bg: #FFFFFF;
            --bg-alt: #F8FAFC;
            --bg-blue: #F1F5F9;
            --border: #E2E8F0;
            --border-light: #EEF2F6;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-pill: 999px;
            --shadow-sm: 0 1px 3px rgba(15,23,42,.06), 0 4px 16px rgba(15,23,42,.06);
            --shadow-md: 0 4px 12px rgba(15,23,42,.08), 0 8px 24px rgba(37,99,235,.10);
            --shadow-lg: 0 8px 24px rgba(37,99,235,.12), 0 16px 40px rgba(15,23,42,.10);
            --shadow-nav: 0 2px 12px rgba(30,64,175,.18);
            --font-sans: 'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
            --transition: 180ms ease;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            margin: 0;
            padding: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), background var(--transition), opacity var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-fluid {
            max-width: 1400px;
        }
        .section {
            padding: 72px 0;
        }
        .section-sm {
            padding: 48px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-blue {
            background: linear-gradient(180deg, #F8FAFC 0%, #F1F5F9 100%);
        }
        .section-tight {
            padding: 40px 0;
        }
        .section-header {
            max-width: 720px;
            margin: 0 auto 40px;
            text-align: center;
        }
        .section-header.left-align {
            text-align: left;
            margin-left: 0;
            max-width: 640px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 16px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .3px;
            background: rgba(37,99,235,.08);
            color: var(--primary);
            margin-bottom: 14px;
        }
        .section-tag.accent {
            background: rgba(245,158,11,.12);
            color: #B45309;
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: -.3px;
            line-height: 1.35;
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 680px;
            margin: 0 auto;
        }
        .section-header.left-align .section-desc {
            margin-left: 0;
        }
        .grid {
            display: grid;
            gap: 24px;
        }
        .grid-2 {
            grid-template-columns: repeat(2,1fr);
        }
        .grid-3 {
            grid-template-columns: repeat(3,1fr);
        }
        .grid-4 {
            grid-template-columns: repeat(4,1fr);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
            letter-spacing: .2px;
            border: 2px solid transparent;
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(37,99,235,.25);
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(37,99,235,.35);
        }
        .btn-accent {
            background: var(--accent);
            color: #1E293B;
            box-shadow: 0 2px 8px rgba(245,158,11,.3);
            border-color: var(--accent);
        }
        .btn-accent:hover {
            background: #D97706;
            border-color: #D97706;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(245,158,11,.4);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: rgba(37,99,235,.06);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-outline-white {
            background: transparent;
            border: 2px solid rgba(255,255,255,.7);
            color: #fff;
        }
        .btn-outline-white:hover {
            background: rgba(255,255,255,.15);
            border-color: #fff;
            color: #fff;
            transform: translateY(-1px);
        }
        .btn:focus-visible {
            outline: 3px solid rgba(37,99,235,.35);
            outline-offset: 2px;
        }
        .card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: rgba(37,99,235,.25);
        }
        .card-body {
            padding: 22px 24px;
        }
        .card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .card-text {
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: .2px;
            line-height: 1.4;
        }
        .badge-blue {
            background: rgba(37,99,235,.1);
            color: var(--primary);
        }
        .badge-amber {
            background: rgba(245,158,11,.15);
            color: #B45309;
        }
        .badge-green {
            background: rgba(16,185,129,.12);
            color: #047857;
        }
        .badge-gray {
            background: var(--bg-blue);
            color: var(--text-muted);
        }

        /* ============ HEADER / NAV ============ */
        .site-header {
            background: linear-gradient(135deg, #1E40AF 0%, #2563EB 50%, #3B82F6 100%);
            box-shadow: var(--shadow-nav);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0 0;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            min-height: 64px;
            padding: 8px 24px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .logo {
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            letter-spacing: .3px;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: opacity var(--transition);
        }
        .logo:hover {
            color: #fff;
            opacity: .85;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
        }
        .main-nav a {
            color: rgba(255,255,255,.88);
            font-size: 14.5px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 6px;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: .2px;
        }
        .main-nav a:hover {
            color: #fff;
            background: rgba(255,255,255,.14);
        }
        .main-nav a.active {
            color: #fff;
            background: rgba(255,255,255,.18);
            box-shadow: inset 0 -2px 0 0 #F59E0B;
            font-weight: 600;
        }
        .header-cta {
            background: var(--accent);
            color: #1E293B;
            font-weight: 600;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            transition: all var(--transition);
            white-space: nowrap;
            border: 2px solid var(--accent);
        }
        .header-cta:hover {
            background: #D97706;
            border-color: #D97706;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(245,158,11,.4);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 8px;
            border-radius: 6px;
            background: transparent;
            border: none;
            cursor: pointer;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255,255,255,.14);
        }
        .nav-toggle-bar {
            display: block;
            width: 22px;
            height: 2.5px;
            border-radius: 2px;
            background: #fff;
            transition: all var(--transition);
        }
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(15,23,42,.5);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition);
        }
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            max-width: 85%;
            height: 100%;
            background: #fff;
            z-index: 1001;
            box-shadow: -8px 0 30px rgba(15,23,42,.15);
            transition: right 280ms ease;
            padding: 24px;
            overflow-y: auto;
        }
        .mobile-nav-panel.open {
            right: 0;
        }
        .mobile-nav-overlay.open {
            opacity: 1;
            display: block;
        }
        .mobile-nav-panel .mobile-nav-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
        }
        .mobile-nav-panel .mobile-nav-logo {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
        }
        .mobile-nav-close {
            font-size: 24px;
            color: var(--text-muted);
            background: none;
            border: none;
            padding: 4px 8px;
            border-radius: 6px;
            cursor: pointer;
            transition: background var(--transition);
        }
        .mobile-nav-close:hover {
            background: var(--bg-blue);
            color: var(--ink);
        }
        .mobile-nav-links {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .mobile-nav-links a {
            color: var(--text);
            font-size: 15px;
            font-weight: 500;
            padding: 12px 14px;
            border-radius: 8px;
            transition: all var(--transition);
            letter-spacing: .2px;
        }
        .mobile-nav-links a:hover {
            background: var(--bg-blue);
            color: var(--primary);
        }
        .mobile-nav-links a.active {
            background: rgba(37,99,235,.08);
            color: var(--primary);
            font-weight: 600;
        }
        .mobile-nav-cta {
            margin-top: 16px;
            width: 100%;
            display: flex;
            justify-content: center;
        }

        /* ============ BREADCRUMB ============ */
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13.5px;
            color: var(--text-muted);
            margin-bottom: 12px;
            flex-wrap: wrap;
        }
        .breadcrumb-nav a {
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .breadcrumb-nav a:hover {
            color: var(--primary);
        }
        .breadcrumb-nav span.separator {
            color: var(--text-light);
        }
        .breadcrumb-nav span.current {
            color: var(--ink);
            font-weight: 600;
        }

        /* ============ CATEGORY HERO ============ */
        .category-hero {
            background: linear-gradient(135deg, #F8FAFC 0%, #EFF6FF 45%, #F1F5F9 100%);
            padding: 40px 0 44px;
            border-bottom: 1px solid var(--border-light);
            overflow: hidden;
            position: relative;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(37,99,235,.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .category-hero-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 36px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .category-hero-content h1 {
            font-size: 32px;
            font-weight: 800;
            color: var(--ink);
            letter-spacing: -.5px;
            line-height: 1.3;
            margin: 0 0 10px;
        }
        .category-hero-content .hero-desc {
            font-size: 15.5px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 580px;
            margin-bottom: 20px;
        }
        .category-hero-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .category-hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 14px;
        }
        .hero-slot-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-md);
            padding: 18px 20px;
            min-width: 200px;
            text-align: center;
            transition: all var(--transition);
        }
        .hero-slot-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .hero-slot-card .slot-label {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: .3px;
            text-transform: uppercase;
            margin-bottom: 4px;
        }
        .hero-slot-card .slot-value {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
        }
        .hero-slot-card .slot-sub {
            font-size: 12px;
            color: var(--text-light);
            margin-top: 4px;
        }
        .hero-image-wrap {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
            max-width: 320px;
        }
        .hero-image-wrap img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        /* ============ INTRO SECTION ============ */
        .intro-grid {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 36px;
            align-items: center;
        }
        .intro-text h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 14px;
            letter-spacing: -.2px;
        }
        .intro-text p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--text);
            margin-bottom: 10px;
        }
        .intro-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
        }
        .intro-image img {
            width: 100%;
            height: 280px;
            object-fit: cover;
        }

        /* ============ LIST CARDS ============ */
        .list-card {
            display: grid;
            grid-template-columns: 200px 1fr;
            gap: 0;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            margin-bottom: 18px;
        }
        .list-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: rgba(37,99,235,.25);
        }
        .list-card-image {
            min-height: 160px;
            position: relative;
            overflow: hidden;
        }
        .list-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            top: 0;
            left: 0;
        }
        .list-card-content {
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .list-card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            font-size: 12.5px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .list-card-meta .date {
            font-weight: 500;
            color: var(--text-light);
        }
        .list-card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.4;
            margin-bottom: 6px;
        }
        .list-card-title a {
            color: var(--ink);
            transition: color var(--transition);
        }
        .list-card-title a:hover {
            color: var(--primary);
        }
        .list-card-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 10px;
        }
        .list-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .read-more-link {
            font-size: 13.5px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .read-more-link:hover {
            color: var(--primary-dark);
            gap: 8px;
        }

        /* ============ DATA DIMENSION ============ */
        .dimension-grid {
            display: grid;
            grid-template-columns: repeat(4,1fr);
            gap: 18px;
        }
        .dimension-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 22px 20px;
            text-align: center;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .dimension-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(37,99,235,.2);
        }
        .dimension-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            background: rgba(37,99,235,.08);
            margin-bottom: 12px;
        }
        .dimension-card h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .dimension-card p {
            font-size: 13.5px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* ============ TIPS ============ */
        .tips-list {
            display: grid;
            grid-template-columns: repeat(3,1fr);
            gap: 20px;
        }
        .tip-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 22px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .tip-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .tip-num {
            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;
            margin-bottom: 10px;
        }
        .tip-item h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .tip-item p {
            font-size: 13.5px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* ============ RANKING ============ */
        .rank-row {
            display: grid;
            grid-template-columns: 60px 1fr auto;
            gap: 16px;
            align-items: center;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            margin-bottom: 12px;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .rank-row:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(3px);
            border-color: rgba(37,99,235,.2);
        }
        .rank-num {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            text-align: center;
            line-height: 1;
        }
        .rank-info h5 {
            font-size: 15px;
            font-weight: 700;
            color: var(--ink);
            margin: 0 0 4px;
        }
        .rank-info p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.5;
        }
        .rank-badge {
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            background: rgba(37,99,235,.08);
            color: var(--primary);
            white-space: nowrap;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 10px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 16px 20px;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            cursor: pointer;
            background: #fff;
            border: none;
            transition: all var(--transition);
            letter-spacing: .2px;
        }
        .faq-question:hover {
            color: var(--primary);
            background: var(--bg-alt);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 16px;
            color: var(--text-light);
            transition: transform var(--transition);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease, padding 300ms ease;
            padding: 0 20px;
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        /* ============ RELATED ARTICLES ============ */
        .related-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: rgba(37,99,235,.2);
        }
        .related-card-image {
            height: 140px;
            overflow: hidden;
        }
        .related-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 300ms ease;
        }
        .related-card:hover .related-card-image img {
            transform: scale(1.04);
        }
        .related-card-body {
            padding: 16px 18px;
        }
        .related-card-body .badge {
            margin-bottom: 8px;
        }
        .related-card-body h5 {
            font-size: 14.5px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.45;
            margin: 0 0 6px;
        }
        .related-card-body h5 a {
            color: var(--ink);
            transition: color var(--transition);
        }
        .related-card-body h5 a:hover {
            color: var(--primary);
        }
        .related-card-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* ============ CTA SECTION ============ */
        .cta-banner {
            background: linear-gradient(135deg, #1E40AF 0%, #2563EB 50%, #1D4ED8 100%);
            border-radius: 16px;
            padding: 44px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            box-shadow: 0 12px 32px rgba(37,99,235,.25);
            flex-wrap: wrap;
        }
        .cta-banner-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: -.2px;
        }
        .cta-banner-content p {
            font-size: 15px;
            color: rgba(255,255,255,.78);
            line-height: 1.7;
            margin: 0;
            max-width: 480px;
        }
        .cta-banner-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--ink);
            color: var(--text-light);
            padding: 48px 0 0;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
            gap: 36px;
            padding-bottom: 32px;
        }
        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-light);
            margin: 0;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: .3px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            color: var(--text-light);
            font-size: 14px;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .footer-col ul a:hover {
            color: #fff;
            transform: translateX(2px);
        }
        .footer-col ul span {
            color: var(--text-light);
            font-size: 14px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,.1);
            padding: 18px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13.5px;
            color: var(--text-light);
        }
        .footer-bottom a {
            color: var(--text-light);
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .header-inner {
                padding: 8px 16px;
            }
            .main-nav {
                gap: 2px;
            }
            .main-nav a {
                padding: 8px 10px;
                font-size: 13.5px;
            }
            .dimension-grid {
                grid-template-columns: repeat(2,1fr);
            }
            .tips-list {
                grid-template-columns: repeat(2,1fr);
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-nav-panel {
                display: block;
            }
            .mobile-nav-overlay {
                display: block;
            }
            .category-hero-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .category-hero-content h1 {
                font-size: 26px;
            }
            .category-hero-visual {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-image-wrap {
                max-width: 100%;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .list-card {
                grid-template-columns: 1fr;
            }
            .list-card-image {
                min-height: 180px;
                position: relative;
            }
            .list-card-image img {
                position: static;
                height: 180px;
            }
            .dimension-grid {
                grid-template-columns: 1fr 1fr;
            }
            .tips-list {
                grid-template-columns: 1fr;
            }
            .cta-banner {
                padding: 32px 24px;
                flex-direction: column;
                text-align: center;
            }
            .cta-banner-actions {
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 24px;
            }
        }
        @media (max-width: 520px) {
            .header-inner {
                min-height: 56px;
                gap: 12px;
                padding: 6px 12px;
            }
            .logo {
                font-size: 16px;
            }
            .category-hero {
                padding: 28px 0 32px;
            }
            .category-hero-content h1 {
                font-size: 22px;
            }
            .category-hero-actions {
                flex-direction: column;
                gap: 8px;
                align-items: flex-start;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .dimension-grid {
                grid-template-columns: 1fr;
            }
            .rank-row {
                grid-template-columns: 44px 1fr;
                gap: 12px;
                padding: 12px 14px;
            }
            .rank-num {
                font-size: 18px;
            }
            .rank-badge {
                display: none;
            }
            .list-card-content {
                padding: 16px;
            }
            .cta-banner {
                border-radius: 12px;
            }
            .cta-banner-content h2 {
                font-size: 19px;
            }
        }

/* roulang page: category4 */
/* ============ 设计系统变量 ============ */
    :root {
      --primary: #2563EB;
      --primary-dark: #1D4ED8;
      --primary-deep: #1E40AF;
      --primary-light: #3B82F6;
      --accent: #F59E0B;
      --accent-light: #FBBF24;
      --success: #10B981;
      --ink: #0F172A;
      --ink-soft: #1E293B;
      --text: #334155;
      --text-muted: #64748B;
      --text-light: #94A3B8;
      --bg: #FFFFFF;
      --bg-alt: #F8FAFC;
      --bg-blue: #F1F5F9;
      --border: #E2E8F0;
      --border-light: #EEF2F6;
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-pill: 999px;
      --shadow-sm: 0 1px 3px rgba(15, 23, 42, .06), 0 4px 16px rgba(15, 23, 42, .06);
      --shadow-md: 0 4px 12px rgba(15, 23, 42, .08), 0 8px 24px rgba(37, 99, 235, .10);
      --shadow-lg: 0 8px 24px rgba(37, 99, 235, .12), 0 16px 40px rgba(15, 23, 42, .10);
      --shadow-nav: 0 2px 12px rgba(30, 64, 175, .18);
      --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      --transition: 180ms ease;
    }

    /* ============ 基础 reset / base ============ */
    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }
    *, *::before, *::after {
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-sans);
      font-size: 16px;
      line-height: 1.75;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      min-height: 100vh;
      margin: 0;
    }
    a {
      color: var(--primary);
      text-decoration: none;
      transition: color var(--transition), background var(--transition), opacity var(--transition);
    }
    a:hover {
      color: var(--primary-dark);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, input, select, textarea {
      font-family: inherit;
      font-size: inherit;
      line-height: inherit;
    }
    button {
      cursor: pointer;
      border: none;
      background: none;
    }
    h1, h2, h3, h4, h5, h6 {
      margin-top: 0;
      font-weight: 700;
      color: var(--ink);
      line-height: 1.3;
    }
    p {
      margin-top: 0;
    }
    ul, ol {
      margin: 0;
      padding: 0;
      list-style: none;
    }

    /* ============ 容器与布局 ============ */
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .section {
      padding: 80px 0;
    }
    .section-alt {
      background: var(--bg-alt);
    }
    .section-blue {
      background: linear-gradient(180deg, #F8FAFC 0%, #F1F5F9 100%);
    }
    .section-tight {
      padding: 56px 0;
    }
    .section-header {
      max-width: 720px;
      margin: 0 auto 48px;
      text-align: center;
    }
    .section-header.left-align {
      text-align: left;
      margin-left: 0;
      max-width: 640px;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 5px 16px;
      border-radius: var(--radius-pill);
      font-size: 13px;
      font-weight: 600;
      letter-spacing: .3px;
      background: rgba(37, 99, 235, .08);
      color: var(--primary);
      margin-bottom: 16px;
    }
    .section-tag.accent {
      background: rgba(245, 158, 11, .12);
      color: #B45309;
    }
    .section-title {
      font-size: 30px;
      font-weight: 700;
      color: var(--ink);
      letter-spacing: -.3px;
      line-height: 1.3;
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.8;
      max-width: 720px;
      margin: 0 auto;
    }
    .section-header.left-align .section-desc {
      margin-left: 0;
    }

    /* ============ 栅格系统 ============ */
    .grid {
      display: grid;
      gap: 24px;
    }
    .grid-2 {
      grid-template-columns: repeat(2, 1fr);
    }
    .grid-3 {
      grid-template-columns: repeat(3, 1fr);
    }
    .grid-4 {
      grid-template-columns: repeat(4, 1fr);
    }
    .grid-6 {
      grid-template-columns: repeat(6, 1fr);
    }

    /* ============ 按钮 ============ */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      font-size: 15px;
      font-weight: 600;
      line-height: 1.4;
      transition: all var(--transition);
      text-align: center;
      white-space: nowrap;
      letter-spacing: .2px;
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 2px 8px rgba(37, 99, 235, .25);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      color: #fff;
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(37, 99, 235, .35);
    }
    .btn-accent {
      background: var(--accent);
      color: #1E293B;
      box-shadow: 0 2px 8px rgba(245, 158, 11, .3);
    }
    .btn-accent:hover {
      background: #D97706;
      color: #fff;
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(245, 158, 11, .4);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary);
      color: var(--primary);
    }
    .btn-outline:hover {
      background: rgba(37, 99, 235, .06);
      border-color: var(--primary-dark);
      color: var(--primary-dark);
      transform: translateY(-1px);
    }
    .btn-outline-white {
      background: transparent;
      border: 2px solid rgba(255,255,255,.8);
      color: #fff;
    }
    .btn-outline-white:hover {
      background: rgba(255,255,255,.15);
      border-color: #fff;
      color: #fff;
    }
    .btn-sm {
      padding: 8px 18px;
      font-size: 14px;
    }
    .btn-block {
      width: 100%;
    }

    /* ============ 导航 ============ */
    .site-header {
      background: linear-gradient(135deg, #1E40AF 0%, #2563EB 55%, #3B82F6 100%);
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: var(--shadow-nav);
    }
    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 68px;
      position: relative;
    }
    .brand {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      letter-spacing: .5px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      white-space: nowrap;
    }
    .brand:hover {
      color: #fff;
      opacity: .9;
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .main-nav a {
      color: rgba(255,255,255,.92);
      font-size: 15px;
      font-weight: 500;
      padding: 8px 14px;
      border-radius: 6px;
      transition: background var(--transition), color var(--transition), opacity var(--transition);
      white-space: nowrap;
    }
    .main-nav a:hover {
      background: rgba(255,255,255,.15);
      color: #fff;
    }
    .main-nav a.active {
      background: rgba(255,255,255,.18);
      color: #fff;
      box-shadow: inset 0 -2px 0 #FBBF24;
    }
    .nav-toggle {
      display: none;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      gap: 5px;
      width: 44px;
      height: 44px;
      border-radius: 8px;
      background: rgba(255,255,255,.12);
      transition: background var(--transition);
    }
    .nav-toggle:hover {
      background: rgba(255,255,255,.25);
    }
    .nav-toggle span {
      width: 22px;
      height: 2px;
      background: #fff;
      border-radius: 2px;
      transition: all var(--transition);
    }
    .nav-toggle.open span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }
    .nav-toggle.open span:nth-child(2) {
      opacity: 0;
    }
    .nav-toggle.open span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }
    .nav-cta {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .nav-cta .btn {
      padding: 10px 20px;
      font-size: 14px;
    }
    @media (max-width: 1024px) {
      .main-nav, .nav-cta .btn-outline-white {
        display: none;
      }
      .nav-toggle {
        display: flex;
      }
      .main-nav.mobile-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        background: #fff;
        padding: 16px 24px;
        border-radius: 0 0 16px 16px;
        box-shadow: 0 12px 24px rgba(15,23,42,.10);
        gap: 4px;
        z-index: 99;
      }
      .main-nav.mobile-open a {
        color: var(--ink);
        font-weight: 500;
        padding: 12px 16px;
        border-radius: 8px;
      }
      .main-nav.mobile-open a:hover {
        background: var(--bg-blue);
        color: var(--primary);
      }
      .main-nav.mobile-open a.active {
        background: rgba(37, 99, 235, .10);
        color: var(--primary);
        box-shadow: none;
      }
      .nav-cta {
        margin-left: auto;
      }
    }

    /* ============ 面包屑 ============ */
    .breadcrumb {
      font-size: 14px;
      color: var(--text-muted);
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      margin-bottom: 12px;
    }
    .breadcrumb a {
      color: var(--primary);
    }
    .breadcrumb a:hover {
      color: var(--primary-dark);
      text-decoration: underline;
    }
    .breadcrumb .sep {
      color: var(--text-light);
    }
    .breadcrumb .current {
      color: var(--text);
      font-weight: 500;
    }

    /* ============ 分类页首屏 ============ */
    .page-hero {
      background: linear-gradient(180deg, #F8FAFC 0%, #F1F5F9 100%);
      padding: 48px 0 40px;
      border-bottom: 1px solid var(--border-light);
    }
    .page-hero-wrapper {
      max-width: 860px;
    }
    .page-hero h1 {
      font-size: 36px;
      font-weight: 800;
      letter-spacing: -.5px;
      margin-bottom: 12px;
      color: var(--ink);
    }
    .page-hero .hero-desc {
      font-size: 17px;
      color: var(--text-muted);
      line-height: 1.8;
      max-width: 720px;
    }
    .page-hero .hero-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 18px;
      margin-top: 18px;
    }
    .hero-meta-item {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-pill);
      padding: 4px 14px;
      box-shadow: var(--shadow-sm);
    }

    /* ============ 卡片系统 ============ */
    .card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      transition: transform var(--transition), box-shadow var(--transition);
    }
    .card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    .card-img {
      width: 100%;
      height: 180px;
      object-fit: cover;
    }
    .card-body {
      padding: 22px 24px 24px;
    }
    .card-title {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--ink);
      line-height: 1.4;
    }
    .card-text {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .card-meta {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 10px;
      font-size: 13px;
      color: var(--text-light);
      margin-bottom: 14px;
    }
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      padding: 3px 12px;
      border-radius: var(--radius-pill);
      font-size: 12px;
      font-weight: 600;
      background: rgba(37, 99, 235, .08);
      color: var(--primary);
      letter-spacing: .3px;
    }
    .badge.accent {
      background: rgba(245, 158, 11, .12);
      color: #B45309;
    }
    .badge.success {
      background: rgba(16, 185, 129, .12);
      color: #047857;
    }

    /* ============ 资讯列表主体 ============ */
    .news-list {
      display: grid;
      gap: 16px;
    }
    .news-item {
      display: grid;
      grid-template-columns: 220px 1fr;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: box-shadow var(--transition), transform var(--transition);
    }
    .news-item:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }
    .news-item-img {
      height: 100%;
      min-height: 150px;
      object-fit: cover;
    }
    .news-item-body {
      padding: 18px 22px;
      display: flex;
      flex-direction: column;
    }
    .news-item-head {
      display: flex;
      flex-wrap: wrap;
      align-items: baseline;
      gap: 12px;
      margin-bottom: 8px;
    }
    .news-item-date {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      background: rgba(37, 99, 235, .08);
      padding: 2px 10px;
      border-radius: var(--radius-pill);
      letter-spacing: .3px;
    }
    .news-item-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--ink);
      line-height: 1.4;
      margin-bottom: 6px;
    }
    .news-item-summary {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      flex-grow: 1;
    }
    .news-item-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-top: 14px;
      flex-wrap: wrap;
      gap: 10px;
    }
    .news-item-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }
    .link-readmore {
      color: var(--primary);
      font-weight: 600;
      font-size: 14px;
      display: inline-flex;
      align-items: center;
      gap: 4px;
      transition: color var(--transition);
      white-space: nowrap;
    }
    .link-readmore:hover {
      color: var(--primary-dark);
      text-decoration: underline;
    }

    /* ============ 数据说明 / 技巧提示 ============ */
    .info-panel {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 28px;
      box-shadow: var(--shadow-sm);
    }
    .info-panel h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--ink);
      margin-bottom: 12px;
    }
    .info-panel ul {
      display: grid;
      gap: 10px;
    }
    .info-panel li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      font-size: 15px;
      color: var(--text);
      line-height: 1.7;
    }
    .info-panel li::before {
      content: "✓";
      color: var(--success);
      font-weight: 700;
      flex-shrink: 0;
      margin-top: 2px;
    }
    .tip-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: transform var(--transition), box-shadow var(--transition);
    }
    .tip-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    .tip-card-icon {
      font-size: 28px;
      margin-bottom: 14px;
    }
    .tip-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .tip-card p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin: 0;
    }

    /* ============ FAQ ============ */
    .faq-list {
      max-width: 800px;
      margin: 0 auto;
    }
    .faq-item {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      margin-bottom: 12px;
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }
    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 22px;
      font-size: 16px;
      font-weight: 600;
      color: var(--ink);
      background: #fff;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      transition: background var(--transition);
    }
    .faq-question:hover {
      background: var(--bg-blue);
    }
    .faq-question .faq-icon {
      font-size: 20px;
      color: var(--primary);
      transition: transform var(--transition);
      flex-shrink: 0;
    }
    .faq-item.open .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 250ms ease, padding 250ms ease;
      padding: 0 22px;
      color: var(--text-muted);
      line-height: 1.8;
      font-size: 15px;
    }
    .faq-item.open .faq-answer {
      max-height: 300px;
      padding: 0 22px 20px;
    }

    /* ============ CTA ============ */
    .cta-panel {
      background: linear-gradient(135deg, #1E40AF 0%, #2563EB 60%, #3B82F6 100%);
      border-radius: var(--radius-card);
      padding: 48px 40px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      box-shadow: var(--shadow-lg);
      color: #fff;
    }
    .cta-panel h2 {
      font-size: 26px;
      color: #fff;
      margin-bottom: 10px;
    }
    .cta-panel p {
      color: rgba(255,255,255,.85);
      font-size: 16px;
      line-height: 1.7;
      margin: 0;
      max-width: 560px;
    }
    .cta-panel .btn-accent {
      background: #F59E0B;
      color: #1E293B;
      box-shadow: 0 4px 12px rgba(0,0,0,.15);
    }
    .cta-panel .btn-accent:hover {
      background: #FBBF24;
      color: #1E293B;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(0,0,0,.2);
    }

    /* ============ 表单 ============ */
    .subscribe-form {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      max-width: 480px;
      width: 100%;
    }
    .subscribe-form input {
      flex: 1 1 220px;
      padding: 12px 16px;
      border-radius: var(--radius-btn);
      border: 1px solid rgba(255,255,255,.4);
      background: rgba(255,255,255,.15);
      color: #fff;
      font-size: 15px;
      outline: none;
      transition: border-color var(--transition), background var(--transition);
    }
    .subscribe-form input::placeholder {
      color: rgba(255,255,255,.7);
    }
    .subscribe-form input:focus {
      border-color: #fff;
      background: rgba(255,255,255,.25);
    }
    .subscribe-form button {
      padding: 12px 22px;
    }

    /* ============ 页脚 ============ */
    .site-footer {
      background: var(--ink);
      color: var(--text-light);
      padding: 56px 0 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 32px;
      padding-bottom: 40px;
    }
    .footer-brand h3 {
      font-size: 20px;
      color: #fff;
      margin-bottom: 12px;
      font-weight: 700;
    }
    .footer-brand p {
      font-size: 14px;
      line-height: 1.8;
      color: var(--text-light);
      margin: 0;
    }
    .footer-col h4 {
      font-size: 15px;
      color: #fff;
      font-weight: 600;
      margin-bottom: 16px;
      letter-spacing: .3px;
    }
    .footer-col ul {
      display: grid;
      gap: 10px;
    }
    .footer-col a {
      color: var(--text-light);
      font-size: 14px;
      transition: color var(--transition);
    }
    .footer-col a:hover {
      color: #fff;
    }
    .footer-col span {
      font-size: 14px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,.08);
      padding: 20px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 13px;
      color: var(--text-light);
    }
    .footer-bottom a {
      color: var(--text-light);
      transition: color var(--transition);
    }
    .footer-bottom a:hover {
      color: #fff;
    }

    /* ============ 响应式 ============ */
    @media (max-width: 1024px) {
      .grid-4, .grid-6 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
      }
    }
    @media (max-width: 768px) {
      .section {
        padding: 56px 0;
      }
      .section-title {
        font-size: 24px;
      }
      .page-hero {
        padding: 36px 0 32px;
      }
      .page-hero h1 {
        font-size: 28px;
      }
      .grid-2, .grid-3, .grid-4, .grid-6 {
        grid-template-columns: 1fr;
      }
      .news-item {
        grid-template-columns: 1fr;
      }
      .news-item-img {
        height: 180px;
        width: 100%;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
      .cta-panel {
        padding: 32px 24px;
      }
      .nav-wrap {
        height: 60px;
      }
      .main-nav.mobile-open {
        top: 60px;
      }
    }
    @media (max-width: 520px) {
      .container {
        padding: 0 16px;
      }
      .btn {
        padding: 10px 20px;
        font-size: 14px;
      }
      .hero-meta-item {
        font-size: 13px;
        padding: 3px 10px;
      }
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}