:root {
            --ink: #172033;
            --muted: #627086;
            --line: #dce5ef;
            --panel: #ffffff;
            --soft: #f7faff;
            --blue: #1557d5;
            --blue-dark: #0b2f7a;
            --teal: #0f9f9a;
            --green: #2d8a56;
            --shadow: 0 18px 48px rgba(17, 32, 56, 0.12);
        }

        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
 

 
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
 
    color: var(--ink);
    line-height: 1.65;
    background: linear-gradient(180deg, rgba(245, 248, 252, .92), rgba(245, 248, 252, 1)), repeating-linear-gradient(90deg, rgba(21, 87, 213, .05) 0 1px, transparent 1px 86px), repeating-linear-gradient(0deg, rgba(15, 159, 154, .04) 0 1px, transparent 1px 86px);
     zoom: calc(1);
    
}
footer { zoom: calc(0.8);}
header {
    zoom: calc(0.8);
}














        a { color: inherit; text-decoration: none; }
        .page { max-width: none; margin: 0; background: var(--panel); }

        .nav { display: none; }
        .brand { font-size: 18px; font-weight: 850; white-space: nowrap; }
        .nav-links { display: flex; gap: 6px; overflow-x: auto; white-space: nowrap; color: var(--muted); font-size: 13px; scrollbar-width: none; }
        .nav-links::-webkit-scrollbar { display: none; }
        .nav-links a { padding: 6px 10px; border-radius: 999px; }
        .nav-links a:hover { color: var(--blue); background: #eef4ff; }

        .hero {

            margin-top: -40px;
            min-height: 520px;
            padding: 78px max(64px, calc((100vw - 1430px) / 2 + 64px)) 42px;
            color: #fff;
            background:
                linear-gradient(105deg, rgba(8, 25, 62, .95), rgba(18, 74, 164, .82) 56%, rgba(10, 107, 119, .74)),
                url("中广天择AI算料页面资源/公司大楼外景图.png");
            background-size: cover;
            background-position: center;
        }
        .eyebrow {
            display: inline-flex; padding: 6px 13px; border-radius: 999px;
            border: 1px solid rgba(255,255,255,.24);
            background: rgba(255,255,255,.12);
            font-size: 13px;
        }
        .hero h1 { max-width: 1200px; margin-top: 24px; font-size: 46px; line-height: 1.16; font-weight: 850; letter-spacing: 0; }
        .lead { max-width: 860px; margin-top: 20px; color: rgba(255,255,255,.84); font-size: 17px; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
        .btn {
            display: inline-flex; align-items: center; justify-content: center;
            min-height: 42px; padding: 10px 18px;
            border-radius: 999px; font-size: 14px; font-weight: 800;
        }
        .btn-primary { background: #fff; color: var(--blue); }
        .btn-secondary { color: #fff; border: 1px solid rgba(255,255,255,.36); background: rgba(255,255,255,.08); }
        .hero-metrics {
            display: grid; grid-template-columns: repeat(4, minmax(0,1fr));
            gap: 12px; max-width: 930px; margin-top: 42px;
        }
        .metric {
            min-height: 108px; padding: 16px;
            border: 1px solid rgba(255,255,255,.18);
            border-radius: 8px; background: rgba(255,255,255,.1);
            backdrop-filter: blur(10px);
        }
        .metric strong { display: block; font-size: 28px; line-height: 1.1; }
        .metric span { display: block; margin-top: 8px; color: rgba(255,255,255,.76); font-size: 13px; }

        .floating-framework {
            position: fixed;
            top: 108px;
            left: calc((100vw - 1430px) / 2 - 180px);
            z-index: 15;
            width: 220px;
            padding: 18px;
            border: 1px solid rgba(220, 229, 239, .95);
            border-radius: 12px;
            background: rgba(255,255,255,.94);
            box-shadow: 0 14px 34px rgba(17, 32, 56, .12);
            backdrop-filter: blur(12px);
        }
        .floating-framework h3 {
            margin-bottom: 10px;
            font-size: 15px;
            line-height: 1.25;
        }
        .framework-links {
            display: grid;
            gap: 2px;
        }
        .framework-link {
            display: block;
            padding: 10px 12px;
            border-radius: 9px;
            color: var(--muted);
            font-size: 13px;
        }
        .framework-link strong {
            display: block;
            color: var(--ink);
            font-size: 14px;
        }
        .framework-link span {
            display: block;
            margin-top: 2px;
            font-size: 12px;
        }
        .framework-link:hover { background: #eef4ff; color: var(--blue); }

        section { padding: 58px max(64px, calc((100vw - 1430px) / 2 + 64px)); }
        .data-band { background: var(--soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
        .section-head { max-width: 840px; margin-bottom: 26px; }
        .kicker { color: var(--blue); font-size: 13px; font-weight: 850; letter-spacing: .08em; }
        h2 { margin-top: 7px; font-size: 30px; line-height: 1.25; letter-spacing: 0; }
        .section-head p { margin-top: 12px; color: var(--muted); font-size: 15px; }

        .dataset-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
        .dataset-card {
            padding: 22px;
            border: 1px solid var(--line);
            border-radius: 10px;
            background: #fff;
        }
        .dataset-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            margin-bottom: 16px;
            border-radius: 8px;
            overflow: hidden;
            background: #edf3fa;
            border: 1px solid var(--line);
        }
        .dataset-image img {
            width: 100%;
            height: 100%;
            display: block;
            object-fit: cover;
        }
        .dataset-card h3 { font-size: 20px; line-height: 1.3; }
        .dataset-card .use {
            display: inline-flex; margin: 12px 0 14px; padding: 5px 10px;
            border-radius: 999px; background: #eef8f7; color: var(--teal);
            font-size: 12px; font-weight: 850;
        }
        .dataset-card h4 { margin-top: 14px; color: var(--blue); font-size: 14px; }
        .dataset-card ul { margin-top: 7px; padding-left: 18px; color: var(--muted); font-size: 14px; }
        .dataset-card li { margin: 4px 0; }
        .enable-list { display: grid; gap: 8px; margin-top: 9px; }
        .enable-list span {
            display: block; padding: 9px 10px;
            border-radius: 8px; background: #f7f9fc; color: #455469; font-size: 13px;
        }

        .asset-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 24px; align-items: start; }
        .asset-panel { padding: 24px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
        .asset-panel h3 { margin-bottom: 14px; font-size: 21px; }
        .tag-list { display: flex; flex-wrap: wrap; gap: 10px; }
        .tag-list span { padding: 8px 11px; border-radius: 999px; background: #eef4ff; color: #24508d; font-size: 13px; font-weight: 700; }
        .coverage-list { display: grid; gap: 10px; margin-top: 18px; }
        .coverage-item {
            display: grid; grid-template-columns: 92px 1fr; gap: 12px; align-items: center;
            padding: 13px 14px; border-radius: 8px; background: #f7fafc;
            border: 1px solid #e7edf5;
        }
        .coverage-item strong { color: var(--blue); font-size: 14px; }
        .coverage-item span { color: var(--muted); font-size: 13px; line-height: 1.55; }
        .proof-list { display: grid; gap: 12px; }
        .proof { padding: 16px; border-left: 4px solid var(--blue); border-radius: 8px; background: #f6f9fe; }
        .proof strong { display: block; font-size: 22px; }
        .proof span { display: block; color: var(--muted); font-size: 13px; }

        .process { display: grid; grid-template-columns: repeat(6, minmax(0,1fr)); gap: 10px; margin-top: 22px; }
        .step { min-height: 118px; padding: 16px 12px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
        .step b { color: var(--blue); font-size: 12px; }
        .step strong { display: block; margin-top: 8px; font-size: 15px; }
        .step span { display: block; margin-top: 6px; color: var(--muted); font-size: 12px; }
        .advantage-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px; margin-top: 20px; }
        .advantage { padding: 20px; border: 1px solid var(--line); border-radius: 10px; background: #f8fbff; }
        .advantage h3 { font-size: 18px; }
        .advantage p { margin-top: 8px; color: var(--muted); font-size: 14px; }

        .algorithm-summary { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 14px; }
        .algorithm-card { padding: 20px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
        .algorithm-card h3 { font-size: 18px; }
        .algorithm-card p { margin-top: 8px; color: var(--muted); font-size: 14px; }
        .note { margin-top: 12px; color: var(--muted); font-size: 13px; }

        .custom-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 20px; align-items: stretch; }
        .custom-lead { padding: 26px; border-radius: 10px; color: #fff; background: linear-gradient(135deg, var(--blue-dark), var(--blue)); }
        .custom-lead h3 { font-size: 24px; line-height: 1.3; }
        .custom-lead p { margin-top: 14px; color: rgba(255,255,255,.82); font-size: 15px; }
        .custom-cards { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; }
        .custom-card { padding: 18px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
        .custom-card h4 { font-size: 17px; }
        .custom-card p { margin-top: 8px; color: var(--muted); font-size: 14px; }

        .product-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
        .product { display: grid; grid-template-columns: 150px 1fr; gap: 18px; padding: 18px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
        .visual { min-height: 120px; border-radius: 8px; overflow: hidden; background: #10233f; }
        .visual svg, .visual img { width: 100%; height: 100%; display: block; object-fit: cover; }
        .product h3 { font-size: 18px; }
        .product p { margin-top: 8px; color: var(--muted); font-size: 14px; }
        .label { display: inline-flex; margin-top: 14px; padding: 4px 9px; border-radius: 999px; background: #eef8f7; color: var(--teal); font-size: 12px; font-weight: 800; }

        .cta {
            display: grid; grid-template-columns: 1fr auto; gap: 22px; align-items: center;
            color: #fff;
            background:
                linear-gradient(120deg, rgba(21,87,213,.96), rgba(15,159,154,.92)),
                repeating-linear-gradient(90deg, rgba(255,255,255,.16) 0 1px, transparent 1px 80px);
        }
        .cta h2 { margin: 0; }
        .cta p { margin-top: 10px; color: rgba(255,255,255,.82); }
        .footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 14px; padding: 24px max(64px, calc((100vw - 1430px) / 2 + 64px)); background: #111827; color: rgba(255,255,255,.72); font-size: 13px; }

        @media (max-width: 1810px) {
            .floating-framework { display: none; }
        }
        @media (max-width: 940px) {
            .nav { padding: 14px 22px; align-items: flex-start; flex-direction: column; }
            .hero { min-height: auto; padding: 64px 28px 34px; }
            .hero h1 { font-size: 34px; }
            .floating-framework { display: none; }
            .framework-links, .hero-metrics, .dataset-grid, .asset-grid, .process, .advantage-grid, .algorithm-summary, .custom-grid, .custom-cards, .product-grid, .cta { grid-template-columns: 1fr; }
            section { padding: 44px 28px; }
            .footer { padding: 22px 28px; }
        }
        @media (max-width: 620px) {
            .page { box-shadow: none; }
            .hero h1 { font-size: 28px; }
            .lead { font-size: 15px; }
            .product { grid-template-columns: 1fr; }
            .visual { min-height: 160px; }
            h2 { font-size: 24px; }
        }