/* roulang page: index */
:root {
            --bg-base: #050B17;
            --bg-card: rgba(10, 20, 40, 0.65);
            --bg-glass: rgba(255, 255, 255, 0.04);
            --border-glass: rgba(255, 255, 255, 0.12);
            --accent-cyan: #00F5D4;
            --accent-blue: #0077B6;
            --accent-orange: #FF5400;
            --accent-green: #2EC4B6;
            --text-main: #FFFFFF;
            --text-muted: #A0AEC0;
            --text-dim: #718096;
            --glow-cyan: 0 0 20px rgba(0, 245, 212, 0.35);
            --glow-cyan-lg: 0 0 30px rgba(0, 245, 212, 0.55);
            --radius-md: 12px;
            --radius-lg: 20px;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg-base);
            color: var(--text-main);
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "MiSans", "Microsoft YaHei", sans-serif;
            line-height: 1.65;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        /* 顶部双行导航 */
        .top-aux-bar {
            background-color: rgba(5, 11, 23, 0.96);
            height: 38px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
        }
        .status-badge-pulse {
            display: inline-block;
            width: 8px;
            height: 8px;
            background: var(--accent-green);
            border-radius: 50%;
            margin-right: 8px;
            box-shadow: 0 0 8px var(--accent-green);
        }

        .main-navbar {
            background: linear-gradient(90deg, #0A1428 0%, #0F1E3D 100%);
            border-bottom: 1px solid var(--border-glass);
            position: sticky;
            top: 0;
            z-index: 999;
            backdrop-filter: blur(12px);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .brand-logo {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            text-decoration: none;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .brand-logo span {
            color: var(--accent-cyan);
            font-size: 14px;
            border: 1px solid var(--accent-cyan);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .nav-menu {
            display: flex;
            gap: 24px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 4px;
            position: relative;
            transition: color 0.25s ease;
        }
        .nav-menu a:hover, .nav-menu a.active {
            color: var(--accent-cyan);
        }
        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            transition: width 0.25s ease;
        }
        .nav-menu a:hover::after {
            width: 100%;
        }

        .btn-glow {
            display: inline-block;
            background: var(--accent-cyan);
            color: #050B17;
            font-weight: 700;
            padding: 12px 28px;
            border-radius: 30px;
            text-decoration: none;
            box-shadow: var(--glow-cyan);
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            text-align: center;
        }
        .btn-glow:hover {
            transform: translateY(-2px);
            box-shadow: var(--glow-cyan-lg);
            background: #25ffdf;
            color: #050B17;
        }
        .btn-outline {
            display: inline-block;
            background: transparent;
            color: #fff;
            border: 1px solid var(--border-glass);
            padding: 12px 28px;
            border-radius: 30px;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .btn-outline:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 245, 212, 0.05);
        }

        /* 基础板块与玻璃卡片 */
        section {
            padding: 95px 0;
            position: relative;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .section-alt {
            background-color: #081124;
        }
        .section-header {
            text-align: center;
            margin-bottom: 55px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 820px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 30px;
            transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
            height: 100%;
        }
        .glass-card:hover {
            border-color: rgba(0, 245, 212, 0.35);
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
        }

        /* 板块 1: 首屏斜切色块与大图背景 */
        .hero-section {
            position: relative;
            min-height: 680px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(5, 11, 23, 0.94) 0%, rgba(10, 20, 40, 0.88) 100%),
                        url('/assets/images/f9fdea97206efdfa.jpg') center/cover no-repeat;
            clip-path: polygon(0 0, 100% 0, 100% 95%, 0 100%);
            padding: 120px 0 140px 0;
        }
        .hero-title-box {
            position: relative;
            background: linear-gradient(135deg, rgba(0, 119, 182, 0.35) 0%, rgba(0, 245, 212, 0.15) 100%);
            border-left: 4px solid var(--accent-cyan);
            padding: 24px 32px;
            border-radius: 8px;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }
        .hero-h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            margin: 0;
            letter-spacing: -0.5px;
        }
        .hero-desc {
            font-size: 17px;
            color: #e2e8f0;
            margin-bottom: 35px;
            line-height: 1.8;
            max-width: 660px;
        }
        .hero-img-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            box-shadow: 0 20px 40px rgba(0,0,0,0.6);
        }
        .hero-img-wrap img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 板块 2: 底层架构与算法 */
        .tech-spec-badge {
            display: inline-block;
            background: rgba(0, 245, 212, 0.1);
            color: var(--accent-cyan);
            font-size: 13px;
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            font-weight: 600;
        }
        .spec-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            margin-bottom: 20px;
        }
        .spec-icon {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            background: rgba(0, 119, 182, 0.3);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-weight: bold;
        }

        /* 板块 5: 流程轴 */
        .process-track {
            position: relative;
            display: flex;
            justify-content: space-between;
            margin-top: 40px;
        }
        .process-track::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 5%;
            right: 5%;
            height: 2px;
            background: linear-gradient(90deg, rgba(0,245,212,0.2) 0%, rgba(0,245,212,0.8) 50%, rgba(0,245,212,0.2) 100%);
            z-index: 1;
        }
        .process-step {
            position: relative;
            z-index: 2;
            width: 18%;
            text-align: center;
        }
        .step-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: #0A1428;
            border: 2px solid var(--accent-cyan);
            box-shadow: 0 0 15px rgba(0, 245, 212, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px auto;
            color: var(--accent-cyan);
            font-weight: bold;
            font-size: 18px;
        }

        /* 板块 8: 数据指标 */
        .stat-item {
            text-align: center;
            padding: 24px;
        }
        .stat-num {
            font-family: "DIN Alternate", "Trebuchet MS", sans-serif;
            font-size: 48px;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1;
            margin-bottom: 8px;
            text-shadow: 0 0 15px rgba(0, 245, 212, 0.4);
        }
        .stat-label {
            font-size: 15px;
            color: var(--text-muted);
        }

        /* 案例与图文卡片 */
        .case-img-box {
            height: 200px;
            overflow: hidden;
            border-radius: 8px;
            margin-bottom: 18px;
        }
        .case-img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .glass-card:hover .case-img-box img {
            transform: scale(1.05);
        }

        /* FAQ 手风琴 */
        .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
        }
        .accordion-title {
            padding: 20px 24px;
            cursor: pointer;
            font-size: 17px;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: #fff;
            user-select: none;
        }
        .accordion-title:hover {
            color: var(--accent-cyan);
        }
        .accordion-content {
            padding: 0 24px 20px 24px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
            display: none;
        }
        .accordion-item.active .accordion-content {
            display: block;
        }
        .accordion-item.active .accordion-title {
            color: var(--accent-cyan);
        }

        /* 合作伙伴矩阵 */
        .partner-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
        }
        .partner-box {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 18px 12px;
            text-align: center;
            border-radius: 8px;
            color: var(--text-dim);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s;
        }
        .partner-box:hover {
            border-color: var(--accent-cyan);
            color: #fff;
            background: rgba(0, 245, 212, 0.05);
        }

        /* 转化表单 */
        .cta-container {
            background: linear-gradient(135deg, rgba(10, 20, 40, 0.95) 0%, rgba(15, 30, 61, 0.95) 100%);
            border: 1px solid var(--accent-cyan);
            box-shadow: 0 0 35px rgba(0, 245, 212, 0.25);
            border-radius: var(--radius-lg);
            padding: 50px;
        }
        .form-input {
            width: 100%;
            background: rgba(5, 11, 23, 0.8);
            border: 1px solid var(--border-glass);
            border-radius: 8px;
            padding: 14px 18px;
            color: #fff;
            font-size: 15px;
            margin-bottom: 20px;
            outline: none;
            transition: border-color 0.25s;
        }
        .form-input:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 10px rgba(0, 245, 212, 0.3);
        }

        /* 页脚 */
        footer {
            background: #03070f;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 70px 0 30px 0;
            color: var(--text-muted);
            font-size: 14px;
        }
        .footer-heading {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.2s;
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            margin-top: 50px;
            padding-top: 25px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            text-align: center;
            font-size: 13px;
            color: var(--text-dim);
        }

        /* 响应式调整 */
        @media screen and (max-width: 1024px) {
            .partner-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media screen and (max-width: 768px) {
            .nav-menu {
                display: none;
            }
            .hero-h1 {
                font-size: 32px;
            }
            .section-title {
                font-size: 26px;
            }
            .process-track {
                flex-direction: column;
                gap: 24px;
            }
            .process-track::before {
                display: none;
            }
            .process-step {
                width: 100%;
                text-align: left;
                display: flex;
                gap: 16px;
            }
            .step-circle {
                margin: 0;
                flex-shrink: 0;
            }
            .partner-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-container {
                padding: 30px 20px;
            }
        }