:root{
      --bg:#fffdf5;
      --panel:#ffffff;
      --panel-2:#fff6cf;
      --line:#eadfb2;
      --text:#1e2430;
      --muted:#5e6675;
      --brand:#f6c700;
      --brand-2:#ffda3a;
      --accent:#ffb100;
      --shadow:0 14px 40px rgba(79,60,4,.10);
      --radius:22px;
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:radial-gradient(circle at top, #fff9dc 0, #fffdf5 33%, #fffdf5 100%);color:var(--text)}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{max-width:var(--container);margin:0 auto;padding:0 20px}
    .topbar{position:sticky;top:0;z-index:50;background:rgba(255,253,245,.92);backdrop-filter:blur(10px);border-bottom:1px solid rgba(234,223,178,.85)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:74px}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain}
    .brand .name{font-weight:800;letter-spacing:.5px}
    .brand .sub{font-size:12px;color:var(--muted);margin-top:2px}
    .menu{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .menu a{font-size:14px;color:#384154;padding:8px 0;position:relative}
    .menu a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--brand);transition:.25s}
    .menu a:hover::after,.menu a:focus::after{width:100%}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:999px;padding:12px 18px;font-weight:700;transition:.25s;cursor:pointer;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#222;box-shadow:0 10px 24px rgba(246,199,0,.25)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(246,199,0,.34)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:#d7c46a;transform:translateY(-1px)}
    .mobile-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px}
    .hero{padding:34px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch}
    .hero-card{background:linear-gradient(180deg,#fffef9 0%, #fff7cd 100%);border:1px solid rgba(234,223,178,.9);border-radius:28px;box-shadow:var(--shadow);padding:34px;position:relative;overflow:hidden}
    .hero-card::before,.hero-card::after{content:"";position:absolute;border-radius:50%;background:rgba(255,214,61,.22);filter:blur(10px)}
    .hero-card::before{width:180px;height:180px;right:-50px;top:-40px}
    .hero-card::after{width:130px;height:130px;left:-30px;bottom:-30px}
    h1{font-size:clamp(30px,5vw,54px);line-height:1.08;margin:0 0 14px}
    .lead{font-size:17px;line-height:1.8;color:var(--muted);margin:0 0 22px;max-width:56ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:20px}
    .pill-row{display:flex;flex-wrap:wrap;gap:10px}
    .pill{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#3c4556}
    .hero-side{display:grid;gap:16px}
    .mini-panel,.metric-card,.feature-card,.quote-card,.step-card,.faq-item,.review-card,.article-card,.form-card,.compare-card,.timeline-card,.price-card,.network-card,.about-card{background:var(--panel);border:1px solid var(--line);border-radius:22px;box-shadow:0 10px 28px rgba(80,60,2,.06)}
    .mini-panel{padding:20px}
    .section{padding:20px 0}
    .section h2{font-size:clamp(24px,3vw,36px);margin:0 0 12px}
    .section .desc{margin:0 0 18px;color:var(--muted);line-height:1.8}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .metric-card,.feature-card,.step-card,.review-card,.article-card,.price-card,.network-card,.compare-card,.about-card,.timeline-card{padding:20px}
    .metric{font-size:32px;font-weight:900;color:#1b202b}
    .label{font-size:13px;color:var(--muted);margin-top:6px}
    .badge{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;background:#fff7c9;border:1px solid #edd97b;border-radius:999px;font-size:12px;color:#6c5708;font-weight:700}
    .section-band{background:linear-gradient(180deg, rgba(255,247,205,.72), rgba(255,255,255,.35));border-top:1px solid rgba(234,223,178,.55);border-bottom:1px solid rgba(234,223,178,.55)}
    .icon{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#ffe66f,#ffbf00);font-weight:900;color:#222;margin-bottom:14px}
    .feature-card h3,.step-card h3,.review-card h3,.article-card h3,.price-card h3,.network-card h3,.compare-card h3{margin:0 0 10px;font-size:18px}
    .feature-card p,.step-card p,.review-card p,.article-card p,.price-card p,.network-card p,.compare-card p,.about-card p,.timeline-card p{margin:0;color:var(--muted);line-height:1.75}
    .table-wrap{overflow:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:14px 16px;border-bottom:1px solid #f1e8bd;text-align:left;font-size:14px;vertical-align:top}
    th{background:#fff9dc;color:#2a3140}
    tr:hover td{background:#fffdf0}
    .accordion{display:grid;gap:12px}
    .faq-item summary{list-style:none;cursor:pointer;padding:18px 20px;font-weight:700}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item .answer{padding:0 20px 18px;color:var(--muted);line-height:1.8}
    .compare-highlight{border:2px solid #ffcc28;box-shadow:0 18px 34px rgba(255,195,0,.14);background:linear-gradient(180deg,#fffef7, #fff7d3)}
    .form-card form{display:grid;gap:14px}
    .field{display:grid;gap:8px}
    .field label{font-size:14px;font-weight:700;color:#2d3442}
    input,select,textarea{width:100%;border:1px solid #d9cf9f;border-radius:14px;padding:12px 14px;background:#fff;color:var(--text);font:inherit;outline:none}
    input:focus,select:focus,textarea:focus{border-color:#e1b900;box-shadow:0 0 0 4px rgba(246,199,0,.12)}
    textarea{min-height:120px;resize:vertical}
    .footer{margin-top:22px;padding:22px 0 34px;border-top:1px solid rgba(234,223,178,.8);background:#fffdf5;color:#2b3140}
    .footer a{color:#22304e}
    .footer-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
    .footer small{color:#5f6877}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .floating a,.floating button{border:none;border-radius:999px;padding:12px 14px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);font-weight:700;color:#22304e}
    .floating .primary{background:linear-gradient(135deg,var(--brand),var(--brand-2))}
    .backtop{position:fixed;right:16px;bottom:128px;z-index:60;display:none}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#3c4556}
    .article-list{display:grid;gap:14px}
    .article-link{display:flex;justify-content:space-between;gap:14px;align-items:center;padding:14px 16px;border-radius:16px;border:1px solid var(--line);background:#fff}
    .article-link:hover{transform:translateY(-1px);box-shadow:0 10px 20px rgba(80,60,2,.06)}
    .hint{font-size:12px;color:#6f7785}
    .nav-panel{display:none}
    @media (max-width: 980px){
      .hero-grid,.grid-4,.grid-3,.grid-2,.footer-grid{grid-template-columns:1fr}
      .menu{display:none}
      .mobile-toggle{display:inline-flex}
      .nav-panel{display:none;padding:0 0 18px}
      .nav-panel.open{display:grid;gap:10px}
      .nav-panel a{padding:12px 14px;border-radius:14px;background:#fff;border:1px solid var(--line)}
    }
    @media (max-width: 640px){
      .hero-card{padding:24px}
      .section{padding:16px 0}
      .btn{width:100%}
      .hero-actions{display:grid}
      .nav-cta{display:none}
      h1{font-size:30px}
    }
    .reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .reveal.show{opacity:1;transform:none}