:root {
            --ac83o-primary: #0061FF;
            --ac83o-primary-dark: #0046B8;
            --ac83o-accent: #FF4D4F;
            --ac83o-text-main: #1D1D1F;
            --ac83o-text-sub: #424245;
            --ac83o-bg-light: #F5F5F7;
            --ac83o-bg-white: #FFFFFF;
            --ac83o-glass: rgba(255, 255, 255, 0.8);
            --ac83o-container-width: 1320px;
            --ac83o-transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--ac83o-text-main);
            line-height: 1.6;
            background-color: var(--ac83o-bg-white);
            overflow-x: hidden;
            word-break: break-word;
        }

        /* --- 导航栏 --- */
        .ac83o-header {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: var(--ac83o-glass);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        .ac83o-nav-container {
            max-width: var(--ac83o-container-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

        .ac83o-logo {
            flex: 0 0 auto;
            display: flex;
            align-items: center;
        }

        .ac83o-logo img {
            height: 32px;
            width: auto;
        }

        .ac83o-nav-list {
            display: flex;
            list-style: none;
            gap: 32px;
            flex-wrap: wrap;
        }

        .ac83o-nav-item a {
            text-decoration: none;
            color: var(--ac83o-text-sub);
            font-size: 15px;
            font-weight: 500;
            transition: var(--ac83o-transition);
            position: relative;
            padding: 8px 0;
        }

        .ac83o-nav-item a:hover {
            color: var(--ac83o-primary);
        }

        .ac83o-nav-item.active a {
            color: var(--ac83o-primary);
        }

        .ac83o-nav-item.active a::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--ac83o-primary);
            border-radius: 2px;
        }

        /* --- Hero 视觉区 --- */
        .ac83o-hero {
            padding: 160px 24px 96px;
            background: radial-gradient(circle at 80% 20%, rgba(0, 97, 255, 0.08) 0%, transparent 40%),
                        radial-gradient(circle at 20% 80%, rgba(255, 77, 79, 0.05) 0%, transparent 40%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .ac83o-hero-content {
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .ac83o-hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(0, 97, 255, 0.1);
            color: var(--ac83o-primary);
            border-radius: 100px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .ac83o-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            letter-spacing: -0.02em;
            word-break: keep-all;
        }

        .ac83o-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.5rem);
            color: var(--ac83o-text-sub);
            margin-bottom: 48px;
            max-width: 760px;
            margin-left: auto;
            margin-right: auto;
        }

        .ac83o-hero-visual {
            margin-top: 64px;
            position: relative;
            height: 400px;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        /* 独特同步动效占位 */
        .ac83o-sync-orbit {
            width: 300px;
            height: 300px;
            border: 2px dashed rgba(0, 97, 255, 0.2);
            border-radius: 50%;
            position: relative;
            animation: rotate 20s linear infinite;
        }

        @keyframes rotate {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        .ac83o-sync-node {
            position: absolute;
            width: 60px;
            height: 60px;
            background: var(--ac83o-bg-white);
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
        }

        .ac83o-node-1 { top: -30px; left: 120px; }
        .ac83o-node-2 { bottom: -30px; left: 120px; }
        .ac83o-node-3 { left: -30px; top: 120px; }
        .ac83o-node-4 { right: -30px; top: 120px; }

        .ac83o-sync-center {
            position: absolute;
            width: 100px;
            height: 100px;
            background: var(--ac83o-primary);
            border-radius: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            box-shadow: 0 20px 40px rgba(0, 97, 255, 0.3);
            font-weight: bold;
        }

        /* --- 核心模块区 --- */
        .ac83o-section {
            padding: 96px 24px;
            max-width: var(--ac83o-container-width);
            margin: 0 auto;
        }

        .ac83o-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
            gap: 32px;
        }

        .ac83o-card {
            background: var(--ac83o-bg-light);
            border-radius: 32px;
            padding: 48px;
            transition: var(--ac83o-transition);
            border: 1px solid transparent;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .ac83o-card:hover {
            transform: translateY(-10px);
            background: var(--ac83o-bg-white);
            box-shadow: 0 30px 60px rgba(0, 0, 0, 0.08);
            border-color: rgba(0, 97, 255, 0.1);
        }

        .ac83o-card-tag {
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--ac83o-primary);
            margin-bottom: 16px;
        }

        .ac83o-card-title {
            font-size: 28px;
            margin-bottom: 24px;
            font-weight: 700;
        }

        .ac83o-card-points {
            list-style: none;
            margin-bottom: 32px;
            flex-grow: 1;
        }

        .ac83o-card-points li {
            margin-bottom: 16px;
            padding-left: 24px;
            position: relative;
            color: var(--ac83o-text-sub);
        }

        .ac83o-card-points li::before {
            content: "•";
            position: absolute;
            left: 0;
            color: var(--ac83o-primary);
            font-weight: bold;
        }

        .ac83o-technical-metric {
            background: rgba(255, 255, 255, 0.6);
            padding: 16px 24px;
            border-radius: 16px;
            font-size: 14px;
            border-left: 4px solid var(--ac83o-primary);
        }

        /* --- 服务流程区 --- */
        .ac83o-service-flow {
            background: #000;
            color: white;
            border-radius: 48px;
            padding: 80px 48px;
            margin: 64px 24px;
        }

        .ac83o-flow-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .ac83o-flow-grid {
            display: flex;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .ac83o-flow-item {
            flex: 1;
            min-width: 240px;
            position: relative;
        }

        .ac83o-flow-step {
            font-size: 48px;
            font-weight: 800;
            opacity: 0.2;
            margin-bottom: 16px;
            font-family: serif;
        }

        .ac83o-flow-name {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--ac83o-primary);
        }

        .ac83o-flow-action {
            font-size: 15px;
            opacity: 0.8;
            line-height: 1.5;
        }

        /* --- 页脚 --- */
        .ac83o-footer {
            background: var(--ac83o-bg-light);
            padding: 80px 24px 40px;
            margin-top: 96px;
        }

        .ac83o-footer-content {
            max-width: var(--ac83o-container-width);
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 48px;
        }

        .ac83o-footer-brand {
            flex: 1;
            min-width: 280px;
        }

        .ac83o-footer-brand-name {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .ac83o-footer-slogan {
            color: var(--ac83o-text-sub);
            max-width: 300px;
        }

        .ac83o-footer-links {
            display: flex;
            gap: 64px;
            flex-wrap: wrap;
        }

        .ac83o-footer-group h4 {
            margin-bottom: 24px;
            font-size: 16px;
        }

        .ac83o-footer-group ul {
            list-style: none;
        }

        .ac83o-footer-group li {
            margin-bottom: 12px;
        }

        .ac83o-footer-group a {
            text-decoration: none;
            color: var(--ac83o-text-sub);
            font-size: 14px;
            transition: var(--ac83o-transition);
        }

        .ac83o-footer-group a:hover {
            color: var(--ac83o-primary);
        }

        .ac83o-footer-bottom {
            max-width: var(--ac83o-container-width);
            margin: 64px auto 0;
            padding-top: 32px;
            border-top: 1px solid rgba(0, 0, 0, 0.05);
            text-align: center;
            font-size: 13px;
            color: #999;
        }

        /* --- 响应式调整 --- */
        @media (max-width: 768px) {
            .ac83o-nav-list {
                display: none; /* 简化移动端，实际开发中需汉堡菜单 */
            }
            .ac83o-hero {
                padding-top: 120px;
            }
            .ac83o-grid {
                grid-template-columns: 1fr;
            }
            .ac83o-service-flow {
                padding: 48px 24px;
            }
            .ac83o-flow-item {
                flex: 1 1 100%;
                text-align: center;
            }
        }

        /* 结构化数据不可见 */
        .ac83o-structured-data { display: none; }