/* roulang page: index */
/* ======================== 设计变量 ======================== */
        :root {
            --primary: #0f172a;
            --primary-light: #1e293b;
            --accent: #38bdf8;
            --accent-2: #818cf8;
            --accent-glow: rgba(56, 189, 248, 0.30);
            --gold: #d4a853;
            --bg-deep: #020617;
            --bg-body: #f8fafc;
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-card-solid: #0f172a;
            --bg-section-alt: #f1f5f9;
            --text-light: #f1f5f9;
            --text-dark: #0f172a;
            --text-muted: #94a3b8;
            --border-glass: rgba(255, 255, 255, 0.12);
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 10px 30px rgba(2, 6, 23, 0.12);
            --shadow-lg: 0 20px 50px rgba(2, 6, 23, 0.20);
            --shadow-glow: 0 0 25px var(--accent-glow);
            --font-size: 16px;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ======================== 基础 Reset ======================== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            font-size: var(--font-size);
            line-height: 1.7;
            color: var(--text-dark);
            background-color: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul, ol {
            list-style: none;
        }
        button, input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        section {
            scroll-margin-top: 100px;
        }

        /* ======================== 容器 ======================== */
        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ======================== 通用按钮 ======================== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: var(--transition);
            border: 1px solid transparent;
            white-space: nowrap;
        }
        .btn i {
            font-size: 14px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-2));
            color: #fff;
            box-shadow: 0 4px 18px rgba(56, 189, 248, 0.30);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(56, 189, 248, 0.45);
            color: #fff;
        }
        .btn-outline {
            border-color: var(--border-glass);
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.04);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-2px);
            border-color: var(--accent);
        }
        .btn-lg {
            padding: 16px 42px;
            font-size: 16px;
        }

        /* ======================== 霓虹发光按钮 ======================== */
        .btn-glow {
            background: rgba(56, 189, 248, 0.12);
            border: 1px solid var(--accent);
            color: var(--accent);
            box-shadow: 0 0 18px var(--accent-glow);
        }
        .btn-glow:hover {
            background: rgba(56, 189, 248, 0.22);
            box-shadow: 0 0 28px var(--accent-glow);
            transform: translateY(-2px);
            color: var(--accent);
        }

        /* ======================== 导航 ======================== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(2, 6, 23, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glass);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
        }
        .logo {
            font-size: 19px;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }
        .logo i {
            color: var(--accent);
            font-size: 22px;
            filter: drop-shadow(0 0 8px var(--accent-glow));
        }
        .logo span {
            background: linear-gradient(90deg, #e2e8f0, #ffffff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .main-nav .nav-link {
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 0;
            position: relative;
            transition: var(--transition);
        }
        .main-nav .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), var(--accent-2));
            transition: var(--transition);
            border-radius: 2px;
        }
        .main-nav .nav-link:hover {
            color: var(--text-light);
        }
        .main-nav .nav-link:hover::after,
        .main-nav .nav-link.active::after {
            width: 100%;
        }
        .main-nav .nav-link.active {
            color: #ffffff;
        }
        .nav-location {
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--text-muted);
            font-size: 14px;
            padding: 8px 16px;
            border: 1px solid var(--border-glass);
            border-radius: 30px;
            background: rgba(255, 255, 255, 0.04);
            transition: var(--transition);
        }
        .nav-location:hover {
            border-color: var(--accent);
            color: var(--accent);
        }
        .nav-location i {
            color: var(--accent);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, var(--accent), var(--accent-2));
            color: #fff;
            padding: 10px 24px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(56, 189, 248, 0.35);
            color: #fff;
        }
        /* 移动端菜单按钮 */
        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--border-glass);
            color: var(--text-light);
            width: 44px;
            height: 44px;
            border-radius: 10px;
            font-size: 18px;
            align-items: center;
            justify-content: center;
        }

        /* ======================== Hero（无大图图标矩阵） ======================== */
        .hero {
            position: relative;
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            color: var(--text-light);
            padding: 110px 0 100px;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(2, 6, 23, 0.95) 0%, rgba(15, 23, 42, 0.88) 45%, rgba(56, 189, 248, 0.25) 100%);
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 60px;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(56, 189, 248, 0.15);
            border: 1px solid rgba(56, 189, 248, 0.35);
            color: var(--accent);
            padding: 8px 20px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 24px;
        }
        .hero-badge i {
            font-size: 14px;
        }
        .hero h1 {
            font-size: 44px;
            line-height: 1.25;
            font-weight: 800;
            margin-bottom: 22px;
            letter-spacing: -0.5px;
            color: #ffffff;
        }
        .hero h1 span {
            background: linear-gradient(90deg, var(--accent), var(--accent-2));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-desc {
            font-size: 16px;
            line-height: 1.9;
            color: rgba(226, 232, 240, 0.85);
            margin-bottom: 34px;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 42px;
        }
        .hero-data {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
        }
        .data-item .data-num {
            font-size: 28px;
            font-weight: 800;
            background: linear-gradient(90deg, #fff, #e2e8f0);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .data-item .data-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }
        /* Hero 右侧：图标矩阵 */
        .hero-matrix {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
        }
        .matrix-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius);
            padding: 28px 22px;
            text-align: center;
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }
        .matrix-item:hover {
            border-color: var(--accent);
            background: rgba(56, 189, 248, 0.10);
            transform: translateY(-4px);
        }
        .matrix-item i {
            font-size: 30px;
            margin-bottom: 12px;
            background: linear-gradient(135deg, var(--accent), var(--accent-2));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .matrix-item h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
            color: #fff;
        }
        .matrix-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ======================== 通用版块标题 ======================== */
        .section-section {
            padding: 90px 0;
        }
        .section-header {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 60px;
        }
        .section-header .tag {
            display: inline-block;
            background: rgba(56, 189, 248, 0.12);
            color: #0284c7;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .section-header h2 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .section-header p {
            color: #64748b;
            font-size: 16px;
            line-height: 1.8;
        }

        /* ======================== 深色版块 ======================== */
        .section-dark {
            background: var(--primary);
            color: var(--text-light);
        }
        .section-dark .section-header h2 {
            color: #ffffff;
        }
        .section-dark .section-header p {
            color: rgba(148, 163, 184, 0.9);
        }
        .section-dark .section-header .tag {
            background: rgba(56, 189, 248, 0.15);
            color: var(--accent);
        }

        /* ======================== 标签 / 徽章 ======================== */
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }
        .tag-list .tag-item {
            background: rgba(56, 189, 248, 0.08);
            color: var(--accent);
            border: 1px solid rgba(56, 189, 248, 0.25);
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }
        .tag-list .tag-item:hover {
            background: rgba(56, 189, 248, 0.18);
            transform: translateY(-2px);
        }

        /* ======================== 功能分组（服务卡片） ======================== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .service-card {
            background: var(--bg-body);
            border: 1px solid #e2e8f0;
            border-radius: var(--radius);
            padding: 36px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--accent-2));
            opacity: 0;
            transition: var(--transition);
        }
        .service-card:hover::before {
            opacity: 1;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .service-card .card-icon {
            width: 58px;
            height: 58px;
            background: linear-gradient(135deg, rgba(56, 189, 248, 0.12), rgba(129, 140, 248, 0.16));
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 22px;
        }
        .service-card .card-icon i {
            font-size: 24px;
            background: linear-gradient(135deg, var(--accent), var(--accent-2));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .service-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--primary);
        }
        .service-card p {
            color: #64748b;
            font-size: 15px;
            line-height: 1.8;
        }

        /* ======================== 资讯区（新闻/更新 strip） ======================== */
        .news-section {
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            color: var(--text-light);
            padding: 90px 0;
            position: relative;
        }
        .news-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(2, 6, 23, 0.88);
        }
        .news-section .container {
            position: relative;
            z-index: 2;
        }
        .news-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.6fr;
            gap: 50px;
            align-items: start;
        }
        .news-list {
            border-top: 1px solid var(--border-glass);
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 22px 0;
            border-bottom: 1px solid var(--border-glass);
            transition: var(--transition);
        }
        .news-item:hover {
            padding-left: 12px;
        }
        .news-item .date {
            font-size: 14px;
            color: var(--accent);
            font-weight: 600;
            min-width: 100px;
        }
        .news-item .news-title {
            color: rgba(241, 245, 249, 0.9);
            font-weight: 500;
            font-size: 16px;
            transition: var(--transition);
        }
        .news-item:hover .news-title {
            color: var(--accent);
        }
        .news-item .news-cat {
            background: rgba(56, 189, 248, 0.15);
            color: var(--accent);
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 20px;
            white-space: nowrap;
        }
        .recommend-box {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius);
            padding: 30px;
            backdrop-filter: blur(10px);
        }
        .recommend-box h3 {
            color: #fff;
            font-size: 20px;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .recommend-box h3 i {
            color: var(--accent);
        }
        .recommend-list .rec-item {
            display: block;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-muted);
            font-size: 14px;
            transition: var(--transition);
            line-height: 1.6;
        }
        .recommend-list .rec-item:hover {
            color: var(--accent);
            padding-left: 8px;
        }
        .recommend-list .rec-item:last-child {
            border-bottom: none;
        }

        /* ======================== 里程碑（横向步骤） ======================== */
        .milestone-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-top: 20px;
        }
        .milestone-item {
            position: relative;
            text-align: center;
            padding: 36px 24px;
            background: var(--bg-body);
            border-radius: var(--radius);
            border: 1px solid #e2e8f0;
            transition: var(--transition);
        }
        .milestone-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow);
        }
        .milestone-item .dot {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--accent), var(--accent-2));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            color: #fff;
            font-size: 16px;
            font-weight: 700;
        }
        .milestone-item h3 {
            font-size: 17px;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .milestone-item p {
            font-size: 14px;
            color: #64748b;
            line-height: 1.7;
        }
        /* 连接线 */
        .milestone-item:not(:last-child)::after {
            content: '';
            position: absolute;
            top: 55px;
            right: -20px;
            width: 28px;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), transparent);
        }

        /* ======================== App下载版块 ======================== */
        .app-section {
            background: var(--bg-section-alt);
        }
        .app-flex {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .app-content .tag {
            display: inline-block;
            background: rgba(56, 189, 248, 0.12);
            color: #0284c7;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .app-content h2 {
            font-size: 34px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 20px;
        }
        .app-content p {
            color: #64748b;
            font-size: 15px;
            line-height: 1.9;
            margin-bottom: 25px;
        }
        .app-points {
            margin-bottom: 30px;
        }
        .app-points li {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 8px 0;
            color: var(--text-dark);
            font-size: 15px;
        }
        .app-points li i {
            color: var(--accent);
            font-size: 18px;
        }
        .app-badge-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .app-badge {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: var(--primary);
            color: #fff;
            padding: 12px 24px;
            border-radius: 14px;
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .app-badge:hover {
            border-color: var(--accent);
            background: var(--primary-light);
        }
        .app-badge i {
            font-size: 26px;
        }
        .app-badge .badge-text {
            display: flex;
            flex-direction: column;
        }
        .app-badge .badge-text small {
            font-size: 11px;
            opacity: 0.7;
        }
        .app-badge .badge-text span {
            font-size: 15px;
            font-weight: 600;
        }
        .app-visual {
            position: relative;
            display: flex;
            justify-content: center;
        }
        .app-visual img {
            border-radius: var(--radius);
            border: 1px solid #e2e8f0;
            box-shadow: var(--shadow-lg);
        }

        /* ======================== 关于我们版块 ======================== */
        .about-flex {
            display: grid;
            grid-template-columns: 0.8fr 1.2fr;
            gap: 60px;
            align-items: center;
        }
        .about-image {
            position: relative;
        }
        .about-image img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
        }
        .about-image .about-badge {
            position: absolute;
            bottom: -20px;
            right: -10px;
            background: var(--primary);
            color: #fff;
            padding: 18px 24px;
            border-radius: 14px;
            box-shadow: var(--shadow-lg);
            text-align: center;
        }
        .about-image .about-badge .num {
            font-size: 28px;
            font-weight: 800;
            background: linear-gradient(90deg, var(--accent), var(--accent-2));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .about-image .about-badge .label {
            font-size: 13px;
            color: var(--text-muted);
        }
        .about-content .tag {
            display: inline-block;
            background: rgba(56, 189, 248, 0.12);
            color: #0284c7;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .about-content h2 {
            font-size: 34px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 18px;
        }
        .about-content > p {
            color: #64748b;
            font-size: 15px;
            line-height: 1.9;
            margin-bottom: 24px;
        }
        .about-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 30px;
        }
        .about-stats .stat-box {
            text-align: center;
            background: var(--bg-section-alt);
            border-radius: 14px;
            padding: 20px 12px;
        }
        .about-stats .stat-box .stat-num {
            font-size: 26px;
            font-weight: 800;
            color: var(--primary);
        }
        .about-stats .stat-box .stat-label {
            font-size: 13px;
            color: #64748b;
            margin-top: 4px;
        }

        /* ======================== FAQ 版块 ======================== */
        .faq-section {
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            color: var(--text-light);
            padding: 90px 0;
            position: relative;
        }
        .faq-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(2, 6, 23, 0.92);
        }
        .faq-section .container {
            position: relative;
            z-index: 2;
        }
        .faq-section .section-header h2 {
            color: #ffffff;
        }
        .faq-section .section-header p {
            color: rgba(148, 163, 184, 0.9);
        }
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            border-radius: 14px;
            margin-bottom: 16px;
            overflow: hidden;
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }
        .faq-item summary {
            display: flex;
            justify-content: space-between;
            align-items: center;
            list-style: none;
            cursor: pointer;
            padding: 22px 26px;
            font-size: 16px;
            font-weight: 600;
            color: #e2e8f0;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary i {
            color: var(--accent);
            font-size: 14px;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item[open] summary i {
            transform: rotate(45deg);
        }
        .faq-item summary:hover {
            background: rgba(56, 189, 248, 0.06);
        }
        .faq-item .faq-answer {
            padding: 0 26px 22px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.9;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin: 0 26px 0 0;
        }

        /* ======================== CTA 版块 ======================== */
        .cta-section {
            padding: 100px 0;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            position: relative;
            overflow: hidden;
            text-align: center;
            color: #fff;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            left: -20%;
            width: 60%;
            height: 200%;
            background: radial-gradient(circle, rgba(56, 189, 248, 0.25), transparent 50%);
            animation: pulse 5s ease-in-out infinite;
        }
        @keyframes pulse {
            0%, 100% { opacity: 0.5; }
            50% { opacity: 1; }
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section .cta-label {
            display: inline-block;
            background: rgba(56, 189, 248, 0.15);
            color: var(--accent);
            padding: 8px 20px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 20px;
        }
        .cta-section h2 {
            font-size: 38px;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.3;
        }
        .cta-section p {
            max-width: 560px;
            margin: 0 auto 36px;
            color: rgba(226, 232, 240, 0.85);
            font-size: 16px;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-note {
            color: rgba(148, 163, 184, 0.7);
            font-size: 13px;
            margin-top: 16px;
        }

        /* ======================== 页脚 ======================== */
        .site-footer {
            background: #020617;
            padding: 70px 0 0;
            color: var(--text-muted);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 50px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-muted);
            max-width: 260px;
        }
        .footer-col h3 {
            color: #e2e8f0;
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .footer-col ul li {
            margin-bottom: 12px;
        }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 6px;
        }
        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-muted);
        }
        .footer-contact li i {
            color: var(--accent);
            margin-top: 5px;
        }
        .footer-bottom {
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(148, 163, 184, 0.6);
        }
        .footer-bottom a {
            color: rgba(148, 163, 184, 0.6);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ======================== 响应式断点 ======================== */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 34px;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-matrix {
                max-width: 480px;
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .milestone-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .milestone-item:not(:last-child)::after {
                display: none;
            }
            .app-flex {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .about-flex {
                grid-template-columns: 1fr;
                gap: 50px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .site-header .container {
                height: 66px;
            }
            .main-nav {
                position: fixed;
                top: 66px;
                left: 0;
                right: 0;
                background: rgba(2, 6, 23, 0.97);
                flex-direction: column;
                align-items: flex-start;
                padding: 30px 24px;
                gap: 20px;
                transform: translateY(-120%);
                transition: transform 0.4s ease;
                border-bottom: 1px solid var(--border-glass);
                backdrop-filter: blur(20px);
                z-index: 99;
            }
            .main-nav.open {
                transform: translateY(0);
            }
            .nav-toggle {
                display: flex;
            }
            .nav-location {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hero {
                padding: 80px 0 70px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero-data {
                gap: 18px;
            }
            .hero-matrix {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .matrix-item {
                padding: 20px 12px;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .section-section {
                padding: 60px 0;
            }
            .section-header h2 {
                font-size: 28px;
            }
            .news-item {
                flex-wrap: wrap;
                gap: 8px;
            }
            .news-item .date {
                min-width: 70px;
            }
            .about-stats {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-bottom {
                justify-content: center;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero h1 {
                font-size: 24px;
                line-height: 1.35;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-matrix {
                grid-template-columns: 1fr;
            }
            .milestone-grid {
                grid-template-columns: 1fr;
            }
            .cta-section h2 {
                font-size: 28px;
            }
            .cta-actions {
                flex-direction: column;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .app-badge-group {
                flex-direction: column;
            }
            .app-badge {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category1 */
:root {
    --primary: #0a1628;
    --primary-light: #122747;
    --primary-dark: #060d1a;
    --accent: #00a8ff;
    --accent-2: #00d4a8;
    --accent-glow: rgba(0, 168, 255, 0.35);
    --bg-light: #f2f6fb;
    --bg-white: #ffffff;
    --text-main: #1a2b3c;
    --text-light: #5b6c7d;
    --border-light: rgba(0, 168, 255, 0.14);
    --card-shadow: 0 8px 30px rgba(10, 22, 40, 0.08);
    --card-shadow-hover: 0 16px 40px rgba(10, 22, 40, 0.16);
    --radius: 16px;
    --radius-sm: 10px;
    --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    --transition: all .3s cubic-bezier(.25, .8, .25, 1);
}
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: var(--font-family);
    background: var(--bg-light);
    color: var(--text-main);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}
img {
    max-width: 100%;
    display: block;
}
ul,
ol {
    list-style: none;
}
button,
input,
summary {
    font-family: inherit;
    font-size: inherit;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
section {
    padding: 80px 0;
}

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(10, 22, 40, .92);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255, 255, 255, .06);
    box-shadow: 0 4px 20px rgba(0, 0, 0, .25);
}
.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 68px;
    gap: 20px;
}
.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.05rem;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: .5px;
    white-space: nowrap;
}
.logo i {
    font-size: 1.35rem;
    color: var(--accent);
    filter: drop-shadow(0 0 8px var(--accent-glow));
}
.logo span {
    background: linear-gradient(135deg, #ffffff, #c8d6e5);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.nav-toggle {
    display: none;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, .15);
    color: #ffffff;
    font-size: 1.3rem;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}
.nav-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}
.main-nav .nav-link {
    display: inline-block;
    padding: 8px 18px;
    border-radius: 50px;
    font-weight: 600;
    font-size: .95rem;
    color: rgba(255, 255, 255, .75);
    border: 1px solid transparent;
    transition: var(--transition);
}
.main-nav .nav-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, .08);
    border-color: rgba(255, 255, 255, .1);
}
.main-nav .nav-link.active {
    color: #ffffff;
    background: var(--accent);
    box-shadow: 0 0 18px var(--accent-glow);
    border-color: var(--accent);
}
.nav-location {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 16px;
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, .18);
    background: rgba(255, 255, 255, .06);
    font-size: .88rem;
    font-weight: 600;
    color: #ffffff;
    margin-left: 8px;
    white-space: nowrap;
}
.nav-location i {
    color: var(--accent-2);
}

/* ===== Hero ===== */
.page-hero {
    position: relative;
    padding: 120px 0 100px;
    overflow: hidden;
    background: var(--primary);
}
.page-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center;
    opacity: .35;
}
.page-hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 22, 40, .93) 30%, rgba(10, 22, 40, .65) 70%, rgba(10, 22, 40, .4));
    z-index: 1;
}
.page-hero .container {
    position: relative;
    z-index: 2;
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: .88rem;
    color: rgba(255, 255, 255, .6);
    margin-bottom: 28px;
}
.breadcrumb a {
    color: rgba(255, 255, 255, .7);
}
.breadcrumb a:hover {
    color: var(--accent);
}
.breadcrumb span {
    color: var(--accent);
    font-weight: 600;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr .85fr;
    gap: 60px;
    align-items: center;
}
.hero-title {
    font-size: 2.7rem;
    line-height: 1.3;
    font-weight: 900;
    color: #ffffff;
    margin-bottom: 20px;
    letter-spacing: 1px;
}
.hero-title em {
    font-style: normal;
    background: linear-gradient(120deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-subtitle {
    font-size: 1.1rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, .72);
    max-width: 560px;
    margin-bottom: 34px;
}
.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 44px;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 30px;
    border-radius: 50px;
    font-weight: 700;
    font-size: .95rem;
    line-height: 1;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent), #0084ff);
    color: #ffffff;
    box-shadow: 0 0 20px var(--accent-glow);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 36px rgba(0, 168, 255, .55);
}
.btn-ghost {
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .25);
    color: #ffffff;
}
.btn-ghost:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-3px);
    background: rgba(255, 255, 255, .12);
}
.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    max-width: 590px;
}
.stat-item {
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: 12px;
    padding: 18px 14px;
    text-align: center;
    backdrop-filter: blur(8px);
    transition: var(--transition);
}
.stat-item:hover {
    border-color: var(--accent);
    background: rgba(255, 255, 255, .1);
}
.stat-num {
    font-size: 1.65rem;
    font-weight: 900;
    color: var(--accent);
    line-height: 1.2;
}
.stat-label {
    font-size: .8rem;
    color: rgba(255, 255, 255, .7);
    margin-top: 4px;
}
.hero-card {
    background: rgba(255, 255, 255, .07);
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: 20px;
    padding: 32px;
    backdrop-filter: blur(20px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, .3);
}
.hero-card-title {
    font-size: 1.2rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 6px;
}
.hero-card-sub {
    font-size: .9rem;
    color: rgba(255, 255, 255, .55);
    margin-bottom: 24px;
}
.hero-card-list {
    display: flex;
    flex-direction: column;
    gap: 18px;
}
.hero-card-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 14px;
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: 12px;
    transition: var(--transition);
}
.hero-card-item:hover {
    background: rgba(0, 168, 255, .1);
    border-color: rgba(0, 168, 255, .3);
}
.hero-card-item i {
    font-size: 1.1rem;
    color: var(--accent);
    margin-top: 3px;
    min-width: 20px;
    text-align: center;
}
.hero-card-item div {
    flex: 1;
}
.hero-card-item strong {
    display: block;
    color: #ffffff;
    font-size: .95rem;
    font-weight: 700;
    margin-bottom: 3px;
}
.hero-card-item p {
    font-size: .83rem;
    color: rgba(255, 255, 255, .6);
    line-height: 1.6;
}

/* ===== Section Head ===== */
.section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
}
.section-head .tag {
    display: inline-block;
    background: rgba(0, 168, 255, .1);
    color: var(--accent);
    font-size: .82rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 6px 18px;
    border-radius: 50px;
    margin-bottom: 14px;
    border: 1px solid rgba(0, 168, 255, .2);
}
.section-head h2 {
    font-size: 2.2rem;
    font-weight: 900;
    line-height: 1.35;
    color: var(--primary);
    margin-bottom: 14px;
}
.section-head p {
    font-size: 1rem;
    color: var(--text-light);
    line-height: 1.75;
}

/* ===== Process ===== */
.process-section {
    background: var(--bg-light);
    position: relative;
}
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.process-step {
    position: relative;
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 30px 24px;
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}
.process-step:hover {
    transform: translateY(-6px);
    box-shadow: var(--card-shadow-hover);
    border-color: rgba(0, 168, 255, .35);
}
.process-step::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -18px;
    width: 16px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), transparent);
}
.process-step:last-child::after {
    display: none;
}
.step-icon {
    width: 66px;
    height: 66px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, rgba(0, 168, 255, .15), rgba(0, 212, 168, .12));
    border: 1px solid var(--border-light);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: var(--accent);
    box-shadow: 0 0 0 rgba(0, 168, 255, 0);
    transition: var(--transition);
}
.process-step:hover .step-icon {
    box-shadow: 0 0 22px rgba(0, 168, 255, .28);
    transform: scale(1.05);
}
.step-num {
    font-size: .8rem;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: 2px;
    margin-bottom: 6px;
}
.process-step h3 {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 10px;
}
.process-step p {
    font-size: .9rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* ===== Standards (dark band) ===== */
.standards-section {
    position: relative;
    background: var(--primary);
    overflow: hidden;
}
.standards-section .section-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('/assets/images/backpic/back-2.webp');
    background-size: cover;
    background-position: center;
    opacity: .25;
}
.standards-section .section-head h2 {
    color: #ffffff;
}
.standards-section .section-head p {
    color: rgba(255, 255, 255, .6);
}
.standards-section .section-head .tag {
    background: rgba(0, 168, 255, .2);
    border-color: rgba(0, 168, 255, .4);
    color: var(--accent);
}
.standards-grid {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.standard-card {
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: var(--radius);
    padding: 30px 24px;
    backdrop-filter: blur(12px);
    transition: var(--transition);
}
.standard-card:hover {
    background: rgba(255, 255, 255, .1);
    border-color: rgba(0, 168, 255, .4);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, .25);
}
.standard-card i {
    font-size: 2rem;
    color: var(--accent);
    margin-bottom: 18px;
    display: inline-block;
    filter: drop-shadow(0 0 10px var(--accent-glow));
}
.standard-card h3 {
    font-size: 1.08rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 10px;
}
.standard-card p {
    font-size: .86rem;
    color: rgba(255, 255, 255, .6);
    line-height: 1.7;
}

/* ===== Scenarios ===== */
.scenarios-section {
    background: var(--bg-white);
}
.scenario-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 32px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}
.scenario-card:hover {
    box-shadow: var(--card-shadow-hover);
}
.scenario-card.reverse .scenario-img {
    order: 2;
}
.scenario-card.reverse .scenario-content {
    order: 1;
}
.scenario-img {
    min-height: 300px;
    position: relative;
    overflow: hidden;
}
.scenario-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    transition: transform .5s ease;
}
.scenario-card:hover .scenario-img img {
    transform: scale(1.04);
}
.scenario-content {
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.scenario-content .sc-tag {
    display: inline-block;
    font-size: .78rem;
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--accent);
    background: rgba(0, 168, 255, .1);
    padding: 5px 14px;
    border-radius: 50px;
    align-self: flex-start;
    margin-bottom: 14px;
}
.scenario-content h3 {
    font-size: 1.35rem;
    font-weight: 900;
    color: var(--primary);
    margin-bottom: 12px;
}
.scenario-content p {
    font-size: .95rem;
    color: var(--text-light);
    line-height: 1.75;
    margin-bottom: 16px;
}
.scenario-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.scenario-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: .9rem;
    color: var(--text-main);
    font-weight: 500;
}
.scenario-features li i {
    color: var(--accent-2);
    font-size: .85rem;
}

/* ===== Guarantee ===== */
.guarantee-section {
    background: #eef4fb;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}
.guarantee-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.guarantee-item {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 32px 28px;
    text-align: center;
    border: 1px solid var(--border-light);
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}
.guarantee-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
    border-color: rgba(0, 168, 255, .3);
}
.guarantee-item i {
    font-size: 2.2rem;
    color: var(--accent);
    margin-bottom: 16px;
    filter: drop-shadow(0 0 8px var(--accent-glow));
}
.guarantee-item h3 {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 10px;
}
.guarantee-item p {
    font-size: .9rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* ===== FAQ ===== */
.faq-section {
    background: var(--bg-white);
}
.faq-list {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.faq-item {
    background: var(--bg-light);
    border: 1px solid var(--border-light);
    border-radius: 14px;
    overflow: hidden;
    transition: var(--transition);
}
.faq-item:hover {
    border-color: rgba(0, 168, 255, .35);
    box-shadow: 0 4px 16px rgba(10, 22, 40, .06);
}
.faq-item summary {
    padding: 20px 24px;
    font-weight: 700;
    font-size: .98rem;
    color: var(--primary);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    transition: var(--transition);
}
.faq-item summary::-webkit-details-marker {
    display: none;
}
.faq-item summary::after {
    content: '\f078';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: .9rem;
    color: var(--accent);
    transition: transform .3s ease;
    flex-shrink: 0;
}
.faq-item[open] summary::after {
    transform: rotate(180deg);
}
.faq-item[open] summary {
    color: var(--accent);
}
.faq-item .faq-answer {
    padding: 0 24px 22px;
    font-size: .92rem;
    line-height: 1.8;
    color: var(--text-light);
}

/* ===== CTA ===== */
.cta-section {
    padding: 90px 0;
    background: linear-gradient(135deg, #0a1628 0%, #10294a 60%, #0a1628 100%);
    position: relative;
    overflow: hidden;
    text-align: center;
}
.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-glow), transparent 70%);
    opacity: .3;
    pointer-events: none;
}
.cta-inner {
    position: relative;
    z-index: 2;
    max-width: 720px;
    margin: 0 auto;
}
.cta-inner h2 {
    font-size: 2.2rem;
    font-weight: 900;
    color: #ffffff;
    margin-bottom: 16px;
}
.cta-inner p {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, .7);
    margin-bottom: 32px;
    line-height: 1.75;
}
.cta-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
}
.cta-buttons .btn-primary {
    font-size: 1.05rem;
    padding: 16px 38px;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--primary-dark);
    color: rgba(255, 255, 255, .75);
    padding: 64px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.footer-brand .logo {
    margin-bottom: 16px;
    display: inline-flex;
}
.footer-brand p {
    font-size: .9rem;
    line-height: 1.75;
    color: rgba(255, 255, 255, .6);
    max-width: 360px;
}
.footer-col h3 {
    font-size: 1rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
}
.footer-col h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 24px;
    height: 2px;
    background: var(--accent);
}
.footer-col ul li {
    margin-bottom: 10px;
}
.footer-col ul a {
    font-size: .9rem;
    color: rgba(255, 255, 255, .6);
    transition: var(--transition);
}
.footer-col ul a:hover {
    color: var(--accent);
    padding-left: 4px;
}
.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: .9rem;
    color: rgba(255, 255, 255, .6);
    margin-bottom: 14px;
    line-height: 1.6;
}
.footer-contact li i {
    color: var(--accent);
    margin-top: 3px;
}
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 22px 0;
    font-size: .84rem;
    color: rgba(255, 255, 255, .45);
    flex-wrap: wrap;
}
.footer-bottom a {
    color: rgba(255, 255, 255, .55);
}
.footer-bottom a:hover {
    color: var(--accent);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .container {
        padding: 0 20px;
    }
    section {
        padding: 60px 0;
    }
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .process-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .standards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .scenario-card {
        grid-template-columns: 1fr;
    }
    .scenario-card.reverse .scenario-img {
        order: 1;
    }
    .scenario-card.reverse .scenario-content {
        order: 2;
    }
    .scenario-img {
        min-height: 220px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}
@media (max-width: 768px) {
    .site-header .container {
        flex-wrap: wrap;
        padding: 12px 20px;
    }
    .nav-toggle {
        display: flex;
    }
    .main-nav {
        display: none;
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        padding: 12px 0;
        gap: 6px;
    }
    .main-nav.open {
        display: flex;
    }
    .main-nav .nav-link,
    .nav-location {
        width: 100%;
        justify-content: center;
        margin-left: 0;
        border-radius: 10px;
        text-align: center;
    }
    .hero-title {
        font-size: 2rem;
    }
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    .section-head h2 {
        font-size: 1.7rem;
    }
    .process-grid {
        grid-template-columns: 1fr;
    }
    .process-step::after {
        display: none;
    }
    .standards-grid {
        grid-template-columns: 1fr;
    }
    .guarantee-grid {
        grid-template-columns: 1fr;
    }
    .scenario-content {
        padding: 28px 24px;
    }
    .cta-inner h2 {
        font-size: 1.8rem;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}
@media (max-width: 520px) {
    .container {
        padding: 0 16px;
    }
    .page-hero {
        padding: 80px 0 70px;
    }
    .hero-title {
        font-size: 1.7rem;
    }
    .hero-subtitle {
        font-size: 1rem;
    }
    .hero-buttons {
        flex-direction: column;
    }
    .btn {
        justify-content: center;
    }
    .stat-num {
        font-size: 1.3rem;
    }
    .section-head {
        margin-bottom: 36px;
    }
    .section-head h2 {
        font-size: 1.5rem;
    }
    .scenario-img {
        min-height: 180px;
    }
    .cta-buttons {
        flex-direction: column;
    }
}