/* roulang page: index */
:root {
            --primary: #1A1D20;
            --primary-dark: #111315;
            --accent-blue: #2B59FF;
            --accent-gold: #C5A880;
            --surface: #F8F9FA;
            --surface-card: #FFFFFF;
            --text-main: #1E2022;
            --text-muted: #686E77;
            --text-light: #F3F4F6;
            --border: rgba(0, 0, 0, 0.08);
            --border-light: rgba(255, 255, 255, 0.12);
            --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.08);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            -webkit-tap-highlight-color: transparent;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--surface);
            color: var(--text-main);
            line-height: 1.7;
            letter-spacing: -0.015em;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

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

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

        /* 顶部状态栏 */
        .top-bar {
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-muted);
            padding: 8px 0;
        }

        .top-bar-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .status-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: #10B981;
            margin-right: 6px;
        }

        /* 主导航 */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
        }

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

        .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--accent-blue), #1a3abb);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: bold;
            font-size: 16px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }

        .nav-links a {
            font-size: 15px;
            color: var(--text-main);
            font-weight: 500;
        }

        .nav-links a:hover {
            color: var(--accent-blue);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 26px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
            text-align: center;
            gap: 8px;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
        }

        .btn-primary:hover {
            background-color: #000000;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }

        .btn-accent {
            background-color: var(--accent-blue);
            color: #FFFFFF;
        }

        .btn-accent:hover {
            background-color: #1a44db;
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(43, 89, 255, 0.35);
        }

        .btn-outline {
            background-color: transparent;
            color: var(--text-light);
            border: 1px solid rgba(255, 255, 255, 0.3);
        }

        .btn-outline:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: #FFFFFF;
        }

        /* 移动端菜单按钮 */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        .mobile-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--primary);
            margin: 5px 0;
            transition: var(--transition);
        }

        /* Section 基础 */
        .section {
            padding: 96px 0;
            position: relative;
        }

        .section-dark {
            background-color: var(--primary-dark);
            color: var(--text-light);
        }

        .section-light-alt {
            background-color: #F1F3F5;
        }

        .section-header {
            text-align: center;
            max-width: 780px;
            margin: 0 auto 60px auto;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-blue);
            background: rgba(43, 89, 255, 0.08);
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
        }

        .section-tag-gold {
            color: var(--accent-gold);
            background: rgba(197, 168, 128, 0.15);
        }

        .section-title {
            font-size: 36px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 18px;
        }

        .section-dark .section-title {
            color: #FFFFFF;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .section-dark .section-desc {
            color: #9CA3AF;
        }

        /* Hero：活动 KV 全宽沉浸叠倒计时条 */
        .hero-banner {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: #111315 url('/assets/images/29353e2b624ea443.jpg') center/cover no-repeat;
            color: #FFFFFF;
            padding: 120px 0 80px 0;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(17, 19, 21, 0.85) 0%, rgba(17, 19, 21, 0.95) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 860px;
            margin: 0 auto;
            text-align: center;
        }

        .hero-title {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 24px;
            letter-spacing: -0.02em;
        }

        .hero-title span {
            background: linear-gradient(90deg, #FFFFFF, var(--accent-gold));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 18px;
            line-height: 1.8;
            color: #D1D5DB;
            margin-bottom: 36px;
        }

        /* 倒计时条组件 */
        .countdown-bar {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 20px 32px;
            display: inline-flex;
            align-items: center;
            gap: 24px;
            margin-bottom: 40px;
            backdrop-filter: blur(10px);
        }

        .countdown-label {
            font-size: 14px;
            color: var(--accent-gold);
            font-weight: 600;
        }

        .countdown-items {
            display: flex;
            gap: 16px;
        }

        .countdown-item {
            text-align: center;
        }

        .countdown-num {
            font-size: 22px;
            font-weight: 700;
            background: rgba(255, 255, 255, 0.1);
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            display: block;
            margin-bottom: 4px;
            min-width: 44px;
            font-family: monospace;
        }

        .countdown-unit {
            font-size: 11px;
            color: #9CA3AF;
        }

        .hero-cta {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        /* 板块2: 能力概览 */
        .capabilities-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .cap-card {
            background: var(--surface-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .cap-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent-blue);
        }

        .cap-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--accent-gold);
            margin-bottom: 12px;
            font-family: monospace;
        }

        .cap-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .cap-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* 板块3: 行业场景 */
        .scene-container {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .scene-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
        }

        .scene-items {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .scene-item {
            background: #FFFFFF;
            border-left: 4px solid var(--accent-blue);
            padding: 20px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            box-shadow: var(--shadow-sm);
        }

        .scene-item h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }

        .scene-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 板块4: 方案矩阵 (3卡片纵深) */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .matrix-card {
            background: var(--surface-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 40px 32px;
            position: relative;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }

        .matrix-card:hover {
            border-color: var(--accent-blue);
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .matrix-tag {
            font-size: 12px;
            font-weight: 700;
            color: var(--accent-blue);
            background: rgba(43, 89, 255, 0.08);
            padding: 4px 10px;
            border-radius: 4px;
            align-self: flex-start;
            margin-bottom: 20px;
        }

        .matrix-title {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--primary);
        }

        .matrix-summary {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
            line-height: 1.65;
        }

        .matrix-features {
            list-style: none;
            margin-bottom: 32px;
            flex-grow: 1;
        }

        .matrix-features li {
            font-size: 14px;
            color: var(--text-main);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .matrix-features li::before {
            content: "✓";
            color: var(--accent-blue);
            font-weight: bold;
        }

        /* 板块5: 资质与技术标准 (资质墙) */
        .cred-wrapper {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 48px;
        }

        .cred-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .cred-box {
            border-right: 1px solid var(--border);
            padding-right: 32px;
        }

        .cred-box:last-child {
            border-right: none;
            padding-right: 0;
        }

        .cred-metric {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 10px;
            font-family: monospace;
        }

        .cred-name {
            font-size: 16px;
            font-weight: 700;
            color: var(--accent-blue);
            margin-bottom: 8px;
        }

        .cred-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 板块6: 交付流程 (时间线/横向流程) */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .flow-card {
            background: var(--surface-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            position: relative;
        }

        .flow-step {
            width: 32px;
            height: 32px;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .flow-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--primary);
        }

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

        /* 板块7: 成功案例 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }

        .case-card {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }

        .case-img-box {
            height: 240px;
            overflow: hidden;
        }

        .case-img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .case-card:hover .case-img-box img {
            transform: scale(1.05);
        }

        .case-body {
            padding: 32px;
        }

        .case-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .case-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 20px;
        }

        .case-stats {
            display: flex;
            gap: 20px;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        .case-stat-item span {
            display: block;
        }

        .case-stat-val {
            font-size: 18px;
            font-weight: 700;
            color: var(--accent-blue);
        }

        .case-stat-lbl {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 板块8: 行业洞察与资讯 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background: var(--surface-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

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

        .news-body {
            padding: 24px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .news-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .news-summary {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 板块9: 合作伙伴与数据源 */
        .partner-box {
            text-align: center;
        }

        .partner-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
            align-items: center;
        }

        .partner-item {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 20px 10px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
            text-align: center;
        }

        /* 板块10: 痛点与解决方案清单 */
        .pain-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 960px;
            margin: 0 auto;
        }

        .pain-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
        }

        .pain-col-problem {
            padding: 24px 30px;
            background: rgba(239, 68, 68, 0.03);
            border-right: 1px solid var(--border);
        }

        .pain-col-solution {
            padding: 24px 30px;
            background: rgba(16, 185, 129, 0.03);
        }

        .pain-tag {
            font-size: 12px;
            font-weight: 700;
            display: inline-block;
            margin-bottom: 6px;
        }

        .pain-tag-red { color: #DC2626; }
        .pain-tag-green { color: #059669; }

        .pain-text {
            font-size: 14px;
            color: var(--text-main);
            line-height: 1.6;
        }

        /* 板块11: 品牌叙事与技术愿景 */
        .brand-story-box {
            background: var(--primary-dark);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            color: #FFFFFF;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .story-text h3 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.3;
        }

        .story-text p {
            font-size: 15px;
            color: #9CA3AF;
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .story-metrics {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .sm-item {
            background: rgba(255, 255, 255, 0.04);
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .sm-val {
            font-size: 32px;
            font-weight: 700;
            color: var(--accent-gold);
            font-family: monospace;
            margin-bottom: 6px;
        }

        .sm-lbl {
            font-size: 13px;
            color: #D1D5DB;
        }

        /* 板块12: 无障碍与数据合规保障 */
        .compliance-bar {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 36px 0;
        }

        .compliance-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .comp-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .comp-icon {
            font-size: 24px;
            line-height: 1;
            color: var(--accent-blue);
        }

        .comp-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .comp-desc {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 板块13: 询盘与方案预约表单 (单行动收口) */
        .form-section-wrap {
            background: linear-gradient(135deg, #1A1D20 0%, #111315 100%);
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            color: #FFFFFF;
            box-shadow: var(--shadow-lg);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .form-info h3 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .form-info p {
            font-size: 15px;
            color: #9CA3AF;
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .form-features {
            list-style: none;
        }

        .form-features li {
            font-size: 14px;
            color: #D1D5DB;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .form-features li span {
            color: var(--accent-gold);
        }

        .booking-form {
            background: #FFFFFF;
            padding: 36px;
            border-radius: var(--radius-md);
            color: var(--text-main);
        }

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

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-main);
        }

        .form-control {
            width: 100%;
            padding: 12px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            background-color: var(--surface);
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--accent-blue);
            background-color: #FFFFFF;
        }

        .form-privacy-note {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 12px;
            line-height: 1.5;
            text-align: center;
        }

        /* 页脚 */
        .footer {
            background-color: var(--primary-dark);
            color: #9CA3AF;
            padding: 72px 0 32px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr 1.5fr;
            gap: 40px;
            margin-bottom: 56px;
        }

        .footer-col h5 {
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

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

        .footer-info-item {
            margin-bottom: 10px;
            line-height: 1.6;
        }

        .footer-bottom {
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
        }

        /* 移动端响应式断点 */
        @media (max-width: 1024px) {
            .capabilities-grid,
            .flow-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .matrix-grid,
            .news-grid,
            .partner-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .partner-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .compliance-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links, .header .btn-primary {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .hero-title {
                font-size: 34px;
            }
            .scene-container,
            .case-grid,
            .form-grid,
            .brand-story-box,
            .pain-row {
                grid-template-columns: 1fr;
            }
            .cred-grid {
                grid-template-columns: 1fr;
            }
            .cred-box {
                border-right: none;
                border-bottom: 1px solid var(--border);
                padding-right: 0;
                padding-bottom: 24px;
            }
            .cred-box:last-child {
                border-bottom: none;
                padding-bottom: 0;
            }
            .matrix-grid,
            .news-grid,
            .capabilities-grid,
            .flow-grid {
                grid-template-columns: 1fr;
            }
            .countdown-bar {
                flex-direction: column;
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .form-section-wrap {
                padding: 36px 20px;
            }
        }

        /* 移动端菜单抽屉 */
        .mobile-drawer {
            position: fixed;
            top: 72px;
            left: 0;
            width: 100%;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            padding: 24px;
            display: none;
            flex-direction: column;
            gap: 16px;
            z-index: 999;
            box-shadow: var(--shadow-lg);
        }

        .mobile-drawer.active {
            display: flex;
        }

        .mobile-drawer a {
            font-size: 16px;
            font-weight: 600;
            padding: 8px 0;
            border-bottom: 1px solid rgba(0,0,0,0.04);
        }