/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1A237E;
            --primary-dark: #0D1452;
            --primary-light: #3949AB;
            --secondary: #00C853;
            --secondary-dark: #009624;
            --secondary-light: #69F0AE;
            --accent: #FF6D00;
            --accent-light: #FF9E40;
            --bg: #F5F7FA;
            --bg-card: #FFFFFF;
            --text: #1F2937;
            --text-light: #6B7280;
            --text-white: #FFFFFF;
            --border: #E5E7EB;
            --border-light: #F3F4F6;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --radius-full: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
            --shadow-lg: 0 8px 24px rgba(26,35,126,0.12);
            --shadow-hover: 0 12px 32px rgba(26,35,126,0.18);
            --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            transition: var(--transition);
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul, ol {
            list-style: none;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 600;
            line-height: 1.3;
            color: var(--text);
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (max-width: 640px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== Utility ===== */
        .section-title {
            font-size: 28px;
            font-weight: 600;
            text-align: center;
            margin-bottom: 12px;
            color: var(--text);
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-light);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }
        .section-divider {
            width: 60px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
            margin: 0 auto 16px;
        }
        .section-header {
            margin-bottom: 48px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 12px 20px;
            background: transparent;
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(20px);
            box-shadow: var(--shadow-sm);
            padding: 8px 20px;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .nav-card {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            padding: 0 24px;
            height: 64px;
            box-shadow: var(--shadow-sm);
            width: 100%;
            transition: var(--transition);
        }
        .site-header.scrolled .nav-card {
            box-shadow: var(--shadow-md);
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
        }
        .nav-brand i {
            font-size: 24px;
            color: var(--secondary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover,
        .nav-links a.active {
            background: var(--primary);
            color: var(--text-white);
            box-shadow: 0 4px 12px rgba(26,35,126,0.25);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: var(--radius-full);
            font-size: 15px;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(26,35,126,0.2);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        .nav-cta i {
            font-size: 14px;
        }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            background: none;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--primary);
            border-radius: 2px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* Mobile Nav */
        .mobile-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.5);
            z-index: 998;
            opacity: 0;
            transition: opacity 0.3s;
        }
        .mobile-overlay.active {
            opacity: 1;
        }
        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            right: -100%;
            width: 300px;
            max-width: 80vw;
            height: 100vh;
            background: var(--bg-card);
            z-index: 999;
            padding: 80px 24px 32px;
            box-shadow: -8px 0 32px rgba(0,0,0,0.1);
            transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            overflow-y: auto;
        }
        .mobile-nav.active {
            right: 0;
        }
        .mobile-nav a {
            display: block;
            padding: 14px 18px;
            font-size: 17px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-md);
            margin-bottom: 4px;
        }
        .mobile-nav a:hover,
        .mobile-nav a.active {
            background: var(--primary);
            color: var(--text-white);
        }
        .mobile-nav .nav-cta-mobile {
            display: block;
            text-align: center;
            padding: 14px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: var(--radius-full);
            font-weight: 600;
            margin-top: 24px;
        }
        .mobile-nav .nav-cta-mobile:hover {
            background: var(--primary-dark);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            padding-top: calc(var(--header-height) + 40px);
            padding-bottom: 80px;
            background: linear-gradient(135deg, #0D1452 0%, #1A237E 40%, #283593 70%, #3949AB 100%);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 160px;
            background: linear-gradient(to top, var(--bg), transparent);
        }
        .hero .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .hero-content h1 {
            font-size: 38px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 20px;
            line-height: 1.2;
            letter-spacing: 0.5px;
        }
        .hero-content h1 span {
            color: var(--secondary-light);
        }
        .hero-content p {
            font-size: 17px;
            color: rgba(255,255,255,0.8);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 520px;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: var(--secondary);
            color: var(--text-white);
            font-size: 17px;
            font-weight: 600;
            border-radius: var(--radius-full);
            box-shadow: 0 8px 24px rgba(0,200,83,0.35);
            transition: var(--transition);
        }
        .hero-btn-primary:hover {
            background: var(--secondary-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0,200,83,0.45);
        }
        .hero-btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: transparent;
            color: var(--text-white);
            font-size: 17px;
            font-weight: 500;
            border-radius: var(--radius-full);
            border: 2px solid rgba(255,255,255,0.3);
            transition: var(--transition);
        }
        .hero-btn-secondary:hover {
            border-color: var(--text-white);
            background: rgba(255,255,255,0.08);
            transform: translateY(-2px);
        }
        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-visual-card {
            background: rgba(255,255,255,0.06);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-xl);
            padding: 32px;
            border: 1px solid rgba(255,255,255,0.1);
            width: 100%;
            max-width: 440px;
            box-shadow: 0 24px 64px rgba(0,0,0,0.2);
        }
        .hero-visual-card .stat-row {
            display: flex;
            justify-content: space-between;
            padding: 16px 0;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .hero-visual-card .stat-row:last-child {
            border-bottom: none;
        }
        .hero-visual-card .stat-label {
            color: rgba(255,255,255,0.6);
            font-size: 14px;
        }
        .hero-visual-card .stat-value {
            color: var(--secondary-light);
            font-size: 18px;
            font-weight: 600;
        }
        .hero-visual-card .stat-highlight {
            color: var(--accent-light);
            font-size: 22px;
            font-weight: 700;
        }

        /* ===== Countdown Bar ===== */
        .countdown-bar {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 80%);
            padding: 18px 0;
            position: relative;
            z-index: 3;
        }
        .countdown-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .countdown-text {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-white);
            font-size: 16px;
            font-weight: 500;
        }
        .countdown-text i {
            font-size: 20px;
        }
        .countdown-timer {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .countdown-timer .time-block {
            background: rgba(255,255,255,0.15);
            border-radius: var(--radius-sm);
            padding: 6px 14px;
            text-align: center;
            min-width: 48px;
        }
        .countdown-timer .time-block .num {
            font-size: 24px;
            font-weight: 700;
            color: var(--secondary-light);
            display: block;
            line-height: 1.2;
        }
        .countdown-timer .time-block .label {
            font-size: 11px;
            color: rgba(255,255,255,0.7);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .countdown-timer .sep {
            color: rgba(255,255,255,0.4);
            font-size: 22px;
            font-weight: 300;
        }
        .countdown-btn {
            padding: 10px 28px;
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255,255,255,0.5);
            border-radius: var(--radius-full);
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
        }
        .countdown-btn:hover {
            background: rgba(255,255,255,0.12);
            border-color: var(--text-white);
            transform: translateY(-2px);
        }

        /* ===== Features / 卖点 ===== */
        .features-section {
            padding: 80px 0;
            background: var(--bg);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            padding: 36px 28px;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .feature-card .icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--secondary);
            background: rgba(0,200,83,0.08);
            margin-bottom: 20px;
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text);
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== Highlight Gallery ===== */
        .gallery-section {
            padding: 80px 0;
            background: var(--bg-card);
        }
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .gallery-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            aspect-ratio: 4 / 3;
            background: var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            cursor: pointer;
        }
        .gallery-card:hover {
            transform: scale(1.02);
            box-shadow: var(--shadow-hover);
        }
        .gallery-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .gallery-card:hover img {
            transform: scale(1.08);
        }
        .gallery-card .overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 20px 18px 16px;
            background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 100%);
            color: var(--text-white);
        }
        .gallery-card .overlay .tag {
            display: inline-block;
            background: var(--secondary);
            color: var(--text-white);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: var(--radius-sm);
            margin-bottom: 8px;
        }
        .gallery-card .overlay h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 4px;
        }
        .gallery-card .overlay p {
            font-size: 13px;
            color: rgba(255,255,255,0.75);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--primary) 0%, #283593 50%, var(--primary-dark) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(255,255,255,0.75);
            margin-bottom: 12px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .sub-text {
            font-size: 15px;
            color: rgba(255,255,255,0.5);
            margin-bottom: 32px;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            padding: 18px 52px;
            background: var(--secondary);
            color: var(--text-white);
            font-size: 18px;
            font-weight: 600;
            border-radius: var(--radius-full);
            box-shadow: 0 8px 32px rgba(0,200,83,0.35);
            transition: var(--transition);
            min-width: 280px;
            justify-content: center;
        }
        .cta-btn:hover {
            background: var(--secondary-dark);
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 12px 40px rgba(0,200,83,0.45);
        }
        .cta-btn i {
            font-size: 16px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 80px 0;
            background: var(--bg);
        }
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text);
            cursor: pointer;
            transition: var(--transition);
            width: 100%;
            text-align: left;
            background: none;
        }
        .faq-question:hover {
            background: var(--border-light);
        }
        .faq-question .q-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .faq-question .arrow {
            margin-left: auto;
            color: var(--text-light);
            transition: var(--transition);
            font-size: 14px;
        }
        .faq-item.active .faq-question .arrow {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== Latest News / CMS ===== */
        .news-section {
            padding: 80px 0;
            background: var(--bg-card);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .news-card {
            background: var(--bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .news-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            background: var(--border-light);
        }
        .news-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .card-tag {
            display: inline-block;
            background: var(--primary);
            color: var(--text-white);
            font-size: 11px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
            width: fit-content;
        }
        .news-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card h3 a {
            color: inherit;
        }
        .news-card h3 a:hover {
            color: var(--primary);
        }
        .news-card .summary {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
            flex: 1;
        }
        .news-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-light);
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }
        .news-card .card-footer .read-more {
            color: var(--secondary);
            font-weight: 500;
            font-size: 13px;
        }
        .news-card .card-footer .read-more i {
            font-size: 12px;
            margin-left: 4px;
        }
        .news-card .card-footer .read-more:hover {
            color: var(--secondary-dark);
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-light);
        }
        .news-empty i {
            font-size: 48px;
            color: var(--border);
            margin-bottom: 16px;
        }
        .news-empty p {
            font-size: 16px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.7);
            padding: 48px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .footer-col p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255,255,255,0.6);
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--secondary-light);
            padding-left: 4px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand i {
            color: var(--secondary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a:hover {
            color: var(--secondary-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
                text-align: center;
            }
            .hero-content p {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-buttons {
                justify-content: center;
            }
            .hero-content h1 {
                font-size: 32px;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .gallery-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-overlay,
            .mobile-nav {
                display: block;
            }
            .hero {
                min-height: auto;
                padding-top: calc(var(--header-height) + 24px);
                padding-bottom: 48px;
            }
            .hero-content h1 {
                font-size: 26px;
            }
            .hero-content p {
                font-size: 15px;
            }
            .hero-visual-card {
                padding: 20px;
            }
            .countdown-bar .container {
                justify-content: center;
                gap: 12px;
            }
            .countdown-text {
                font-size: 14px;
            }
            .countdown-timer .time-block {
                padding: 4px 10px;
                min-width: 38px;
            }
            .countdown-timer .time-block .num {
                font-size: 18px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .gallery-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .cta-btn {
                padding: 16px 32px;
                font-size: 16px;
                min-width: 200px;
            }
            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-title {
                font-size: 24px;
            }
            .section-subtitle {
                font-size: 15px;
                margin-bottom: 32px;
            }
            .features-section,
            .gallery-section,
            .cta-section,
            .faq-section,
            .news-section {
                padding: 48px 0;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 22px;
            }
            .hero-btn-primary,
            .hero-btn-secondary {
                padding: 12px 24px;
                font-size: 15px;
                width: 100%;
                justify-content: center;
            }
            .hero-buttons {
                flex-direction: column;
                gap: 12px;
            }
            .countdown-timer .time-block {
                padding: 3px 8px;
                min-width: 32px;
            }
            .countdown-timer .time-block .num {
                font-size: 16px;
            }
            .countdown-timer .sep {
                font-size: 16px;
            }
            .countdown-btn {
                padding: 8px 20px;
                font-size: 13px;
            }
            .nav-card {
                padding: 0 16px;
                height: 56px;
            }
            .nav-brand {
                font-size: 17px;
            }
            .site-header {
                padding: 8px 12px;
            }
            .container {
                padding-left: 12px;
                padding-right: 12px;
            }
        }

/* roulang page: article */
:root {
            --primary: #1A237E;
            --primary-light: #283593;
            --primary-dark: #0D1442;
            --secondary: #00C853;
            --secondary-light: #00E676;
            --secondary-dark: #009624;
            --accent: #FF6D00;
            --accent-light: #FF9100;
            --bg: #F5F7FA;
            --bg-card: #FFFFFF;
            --text: #1F2937;
            --text-light: #6B7280;
            --text-white: #FFFFFF;
            --border: #E5E7EB;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
            --shadow-lg: 0 8px 24px rgba(26,35,126,0.12);
            --shadow-xl: 0 12px 36px rgba(26,35,126,0.18);
            --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --container: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html { scroll-behavior: smooth; }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-light); }

        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header / Nav */
        .site-header {
            background: var(--bg-card);
            padding: 16px 0;
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(12px);
            background: rgba(255,255,255,0.95);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
        }
        .site-logo i {
            font-size: 28px;
            color: var(--secondary);
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            display: inline-block;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .nav-links a.active {
            background: var(--primary);
            color: var(--text-white);
            box-shadow: var(--shadow-md);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            background: var(--secondary);
            color: var(--text-white);
            border-radius: var(--radius-xl);
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            white-space: nowrap;
            border: none;
            cursor: pointer;
        }
        .nav-cta:hover {
            background: var(--secondary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
            color: var(--text-white);
        }

        .menu-toggle {
            display: none;
            font-size: 24px;
            color: var(--primary);
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .menu-toggle:hover { background: rgba(26,35,126,0.08); }

        /* Article Page */
        .article-hero {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            padding: 60px 0 80px;
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0,200,83,0.15), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255,109,0,0.1), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .article-hero .container { position: relative; z-index: 1; }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: rgba(255,255,255,0.8);
            transition: var(--transition);
        }
        .breadcrumb a:hover { color: var(--text-white); }
        .breadcrumb .sep { opacity: 0.5; }

        .article-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.3;
            max-width: 800px;
            margin-bottom: 16px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            flex-wrap: wrap;
        }
        .article-meta i { margin-right: 4px; }
        .article-meta .category-tag {
            display: inline-block;
            padding: 4px 14px;
            background: var(--secondary);
            color: var(--text-white);
            border-radius: var(--radius-sm);
            font-size: 13px;
            font-weight: 500;
        }

        /* Main Content */
        .article-main {
            padding: 40px 0 60px;
        }

        .article-body {
            max-width: 720px;
            margin: 0 auto;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 48px 56px;
        }

        .article-body :deep(p) {
            margin-bottom: 20px;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
        }

        .article-body :deep(h2) {
            font-size: 24px;
            font-weight: 600;
            color: var(--primary);
            margin: 36px 0 16px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--border);
        }

        .article-body :deep(h3) {
            font-size: 20px;
            font-weight: 600;
            color: var(--text);
            margin: 28px 0 12px;
        }

        .article-body :deep(h4) {
            font-size: 18px;
            font-weight: 500;
            color: var(--text);
            margin: 24px 0 10px;
        }

        .article-body :deep(ul), .article-body :deep(ol) {
            margin: 0 0 20px 24px;
        }
        .article-body :deep(li) {
            margin-bottom: 8px;
            line-height: 1.7;
        }
        .article-body :deep(ul) { list-style: disc; }
        .article-body :deep(ol) { list-style: decimal; }

        .article-body :deep(blockquote) {
            margin: 24px 0;
            padding: 16px 24px;
            background: #F0F4FF;
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-light);
        }

        .article-body :deep(code) {
            background: #F3F4F6;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 14px;
            color: var(--primary);
        }

        .article-body :deep(pre) {
            background: #1F2937;
            color: #E5E7EB;
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            font-size: 14px;
            line-height: 1.6;
            margin: 20px 0;
        }

        .article-body :deep(pre code) {
            background: none;
            color: inherit;
            padding: 0;
        }

        .article-body :deep(img) {
            margin: 24px auto;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            max-width: 100%;
        }

        .article-body :deep(a) {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body :deep(a:hover) { color: var(--secondary); }

        /* Article Footer */
        .article-footer {
            max-width: 720px;
            margin: 32px auto 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .article-footer .back-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: var(--radius-xl);
            font-weight: 500;
            font-size: 15px;
            transition: var(--transition);
        }
        .article-footer .back-link:hover {
            background: var(--primary-light);
            transform: translateX(-4px);
            box-shadow: var(--shadow-md);
            color: var(--text-white);
        }
        .article-footer .share-links {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .article-footer .share-links a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg);
            color: var(--text-light);
            font-size: 16px;
            transition: var(--transition);
        }
        .article-footer .share-links a:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-2px);
        }

        /* Not Found */
        .article-not-found {
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
            padding: 80px 40px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
        }
        .article-not-found i {
            font-size: 64px;
            color: var(--border);
            margin-bottom: 24px;
        }
        .article-not-found h2 {
            font-size: 24px;
            color: var(--text);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .article-not-found a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: var(--radius-xl);
            font-weight: 500;
            transition: var(--transition);
        }
        .article-not-found a:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
            color: var(--text-white);
        }

        /* Related Section */
        .related-section {
            padding: 60px 0;
            background: var(--bg);
        }
        .related-section .section-title {
            text-align: center;
            font-size: 28px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 40px;
            position: relative;
        }
        .related-section .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--secondary);
            margin: 12px auto 0;
            border-radius: 2px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--secondary);
        }
        .related-card .card-img {
            height: 180px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.2);
            font-size: 48px;
            position: relative;
            overflow: hidden;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .related-card .card-body {
            padding: 20px;
        }
        .related-card .card-body .cat-tag {
            display: inline-block;
            padding: 2px 12px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: 4px;
            font-size: 12px;
            font-weight: 500;
            margin-bottom: 10px;
        }
        .related-card .card-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h3 a { color: var(--text); }
        .related-card .card-body h3 a:hover { color: var(--primary); }
        .related-card .card-body .time {
            font-size: 13px;
            color: var(--text-light);
        }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.85);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand i { color: var(--secondary); font-size: 26px; }
        .footer-col p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255,255,255,0.65);
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 2px;
            background: var(--secondary);
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            color: rgba(255,255,255,0.65);
            font-size: 14px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col ul li a:hover {
            color: var(--secondary);
            transform: translateX(4px);
        }
        .footer-col ul li a i { width: 16px; color: var(--secondary); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.6);
            transition: var(--transition);
        }
        .footer-bottom a:hover { color: var(--secondary); }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .menu-toggle { display: block; }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-card);
                flex-direction: column;
                padding: 20px;
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                gap: 4px;
            }
            .nav-links.open { display: flex; }
            .nav-links a {
                width: 100%;
                text-align: center;
                padding: 14px 20px;
            }
            .nav-cta { display: none; }
            .nav-cta.mobile-show { display: flex; margin-top: 8px; width: 100%; justify-content: center; }

            .article-hero { padding: 40px 0 60px; }
            .article-hero h1 { font-size: 24px; }
            .article-body { padding: 24px 20px; }
            .article-body :deep(h2) { font-size: 20px; }
            .article-body :deep(h3) { font-size: 18px; }

            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-footer {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }
            .article-footer .back-link { justify-content: center; }
            .article-footer .share-links { justify-content: center; }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .site-logo { font-size: 18px; }
            .site-logo i { font-size: 22px; }
            .article-hero h1 { font-size: 20px; }
            .article-meta { font-size: 13px; gap: 12px; }
            .article-body { padding: 20px 16px; }
            .article-body :deep(p) { font-size: 15px; }
        }

/* roulang page: category1 */
:root {
            --primary: #1A237E;
            --primary-dark: #0D1452;
            --primary-light: #3F51B5;
            --secondary: #00C853;
            --secondary-dark: #009624;
            --accent: #FF6D00;
            --accent-light: #FF9E40;
            --bg: #F5F7FA;
            --card-bg: #FFFFFF;
            --text: #1F2937;
            --text-light: #6B7280;
            --border: #E5E7EB;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
            --shadow-lg: 0 8px 24px rgba(26,35,126,0.12);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --max-width: 1200px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }

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

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

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            background: var(--card-bg);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 0 20px;
        }

        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
        }
        .logo i {
            font-size: 26px;
            color: var(--secondary);
        }
        .logo:hover {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-links a {
            padding: 8px 16px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover {
            background: var(--primary);
            color: #fff;
        }
        .nav-links a.active {
            background: var(--primary);
            color: #fff;
        }

        .nav-cta {
            padding: 8px 20px;
            background: var(--secondary);
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover {
            background: var(--secondary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 28px;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
        }

        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--card-bg);
                box-shadow: var(--shadow-lg);
                padding: 16px 20px;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                gap: 8px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
            }
            .nav-cta {
                display: none;
            }
            .nav-cta-mobile {
                display: block !important;
                margin-top: 8px;
                text-align: center;
            }
        }

        @media (min-width: 769px) {
            .nav-cta-mobile {
                display: none !important;
            }
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            overflow: hidden;
            padding: 80px 20px 60px;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .hero-section .container {
            position: relative;
            z-index: 1;
        }
        .hero-section h1 {
            font-size: 40px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .hero-section h1 span {
            color: var(--secondary);
        }
        .hero-section .hero-sub {
            font-size: 20px;
            color: rgba(255,255,255,0.85);
            max-width: 700px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .hero-section .hero-btn {
            display: inline-block;
            padding: 14px 40px;
            background: var(--secondary);
            color: #fff;
            border-radius: 28px;
            font-size: 18px;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(0,200,83,0.3);
        }
        .hero-section .hero-btn:hover {
            background: var(--secondary-dark);
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(0,200,83,0.4);
            color: #fff;
        }
        .hero-section .hero-btn i {
            margin-left: 8px;
        }

        @media (max-width: 768px) {
            .hero-section {
                min-height: 320px;
                padding: 60px 16px 40px;
            }
            .hero-section h1 {
                font-size: 28px;
            }
            .hero-section .hero-sub {
                font-size: 16px;
            }
        }

        /* ===== 通用板块 ===== */
        .section-block {
            padding: 80px 0;
        }
        .section-block .section-title {
            text-align: center;
            font-size: 28px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 12px;
        }
        .section-block .section-desc {
            text-align: center;
            font-size: 16px;
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.6;
        }

        @media (max-width: 640px) {
            .section-block {
                padding: 48px 0;
            }
            .section-block .section-title {
                font-size: 22px;
            }
        }

        /* ===== 核心优势 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--card-bg);
            border-radius: var(--radius-xl);
            padding: 32px 24px;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .feature-card .icon {
            font-size: 40px;
            color: var(--secondary);
            margin-bottom: 16px;
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text);
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.6;
        }

        @media (max-width: 960px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 适用场景 ===== */
        .scenes-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .scene-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            text-align: center;
            border: 1px solid var(--border);
        }
        .scene-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            border-color: var(--secondary);
        }
        .scene-card .icon {
            font-size: 32px;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .scene-card h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .scene-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.5;
        }

        @media (max-width: 960px) {
            .scenes-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .scenes-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 接入流程 ===== */
        .flow-steps {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
        }
        .flow-step {
            flex: 1;
            min-width: 160px;
            text-align: center;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 28px 16px 20px;
            box-shadow: var(--shadow-md);
            position: relative;
        }
        .flow-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            font-weight: 700;
            font-size: 18px;
            margin-bottom: 12px;
        }
        .flow-step h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .flow-step p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.5;
        }

        @media (max-width: 768px) {
            .flow-steps {
                flex-direction: column;
                gap: 16px;
            }
            .flow-step {
                min-width: 100%;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 500;
            font-size: 16px;
            color: var(--text);
            background: var(--card-bg);
            transition: var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            background: #F0F2F5;
        }
        .faq-question .q-icon {
            color: var(--secondary);
            font-weight: 700;
            margin-right: 10px;
        }
        .faq-question .arrow {
            transition: var(--transition);
            font-size: 14px;
            color: var(--text-light);
        }
        .faq-item.open .faq-question .arrow {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 64px 20px;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(255,255,255,0.85);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .cta-btn {
            display: inline-block;
            padding: 14px 48px;
            background: var(--secondary);
            color: #fff;
            border-radius: 28px;
            font-size: 18px;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(0,200,83,0.3);
        }
        .cta-section .cta-btn:hover {
            background: var(--secondary-dark);
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(0,200,83,0.4);
            color: #fff;
        }
        .cta-section .cta-btn i {
            margin-left: 8px;
        }

        @media (max-width: 640px) {
            .cta-section h2 {
                font-size: 22px;
            }
            .cta-section p {
                font-size: 15px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #1A1A2E;
            color: rgba(255,255,255,0.8);
            padding: 48px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .footer-col .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-col .footer-brand i {
            color: var(--secondary);
            margin-right: 8px;
        }
        .footer-col p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--secondary);
        }
        .footer-col ul li a i {
            margin-right: 6px;
            width: 16px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255,255,255,0.5);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }

        @media (max-width: 960px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 轻量动画 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== 图片圆角辅助 ===== */
        .img-rounded {
            border-radius: var(--radius-lg);
            object-fit: cover;
            width: 100%;
        }

        /* ===== 标签 ===== */
        .badge {
            display: inline-block;
            padding: 2px 10px;
            border-radius: var(--radius-sm);
            font-size: 12px;
            font-weight: 500;
            background: var(--primary);
            color: #fff;
        }
        .badge-green {
            background: var(--secondary);
            color: #fff;
        }
        .badge-orange {
            background: var(--accent);
            color: #fff;
        }

        /* ===== 信任/数据条 ===== */
        .trust-bar {
            display: flex;
            justify-content: center;
            gap: 48px;
            flex-wrap: wrap;
            padding: 32px 0 0;
        }
        .trust-item {
            text-align: center;
        }
        .trust-item .num {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
        }
        .trust-item .label {
            font-size: 14px;
            color: var(--text-light);
            margin-top: 4px;
        }

        @media (max-width: 640px) {
            .trust-bar {
                gap: 24px;
            }
            .trust-item .num {
                font-size: 24px;
            }
        }