:root{
      --bg:#fff7ef;
      --panel:#ffffff;
      --panel-2:#fff2dc;
      --line:#efd7bd;
      --text:#1f2430;
      --muted:#5f6777;
      --brand:#ff5b3f;
      --brand-2:#ff9a3d;
      --brand-3:#7a5cff;
      --success:#12906e;
      --shadow:0 18px 50px rgba(64, 35, 16, .10);
      --radius:20px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(255,91,63,.14), transparent 28%),
        radial-gradient(circle at top right, rgba(122,92,255,.12), transparent 22%),
        linear-gradient(180deg, #fffaf4 0%, #fff5ea 50%, #fff9f2 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .topbar{
      position:sticky;top:0;z-index:30;
      backdrop-filter:blur(18px);
      background:rgba(255,250,244,.82);
      border-bottom:1px solid rgba(239,215,189,.7);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      padding:14px 0;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain;background:#fff;border-radius:12px;padding:6px;box-shadow:0 10px 24px rgba(0,0,0,.08)}
    .brand h2{margin:0;font-size:18px;line-height:1.1}
    .brand p{margin:3px 0 0;color:var(--muted);font-size:12px}
    .nav-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
    .nav-links a{font-size:14px;color:#3a4150;padding:8px 0}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:1px solid transparent;border-radius:999px;
      padding:11px 16px;font-weight:700;font-size:14px;
      transition:.22s ease;cursor:pointer;
    }
    .btn-primary{
      color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2));
      box-shadow:0 14px 26px rgba(255,91,63,.24);
    }
    .btn-primary:hover,.btn-outline:hover{transform:translateY(-2px)}
    .btn-outline{
      background:#fff;color:var(--text);border-color:var(--line)
    }
    .menu-btn{
      display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;
      color:var(--text)
    }
    .hero{padding:34px 0 18px}
    .hero-grid{
      display:grid;grid-template-columns:1.25fr .9fr;gap:22px;align-items:stretch
    }
    .hero-main,.hero-side,.section-card,.metric,.service,.case,.review,.faq-item,.article,.timeline-item,.compare,.form-card,.network-card{
      background:var(--panel);
      border:1px solid rgba(239,215,189,.9);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
    }
    .hero-main{
      position:relative;overflow:hidden;padding:34px;
      background:
        linear-gradient(135deg, rgba(255,255,255,.96), rgba(255,245,235,.95)),
        radial-gradient(circle at 80% 20%, rgba(255,154,61,.18), transparent 24%);
    }
    .hero-main::after{
      content:"";position:absolute;inset:auto -60px -70px auto;width:240px;height:240px;border-radius:50%;
      background:radial-gradient(circle, rgba(122,92,255,.22), transparent 66%);
      pointer-events:none
    }
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;
      background:rgba(255,91,63,.1);color:#b4311d;font-size:13px;font-weight:700
    }
    h1{margin:16px 0 14px;font-size:clamp(30px,4.8vw,52px);line-height:1.05;letter-spacing:-.02em}
    .hero-main p{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:58ch}
    .hero-points{
      display:flex;flex-wrap:wrap;gap:10px;margin:20px 0 26px
    }
    .chip{
      padding:9px 12px;border-radius:999px;background:#fff8f1;border:1px solid #f0dcc5;
      color:#4e5563;font-size:13px;font-weight:600
    }
    .hero-cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
    .hero-stats{
      margin-top:22px;display:grid;grid-template-columns:repeat(4,1fr);gap:12px
    }
    .mini-stat{
      padding:14px 14px 13px;border-radius:18px;background:linear-gradient(180deg,#fff, #fff6ed);
      border:1px solid #f0dcc5
    }
    .mini-stat b{display:block;font-size:20px;color:#171b24}
    .mini-stat span{display:block;margin-top:6px;color:var(--muted);font-size:12px;line-height:1.5}
    .hero-side{padding:22px;background:linear-gradient(180deg,#fff, #fff3e4)}
    .side-card{
      background:linear-gradient(135deg, #ff6a47, #ff9f3f);
      color:#fff;border-radius:20px;padding:20px 18px 18px;box-shadow:0 16px 30px rgba(255,91,63,.23)
    }
    .side-card h3{margin:0 0 8px;font-size:20px}
    .side-card p{margin:0;opacity:.95;line-height:1.7;font-size:14px}
    .side-list{margin:16px 0 0;padding:0;list-style:none;display:grid;gap:10px}
    .side-list li{
      display:flex;gap:10px;align-items:flex-start;padding:12px 14px;border-radius:16px;background:#fff;border:1px solid #f1dcc6
    }
    .dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));margin-top:5px;flex:0 0 auto}
    .section{padding:18px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:28px;line-height:1.1}
    .section-head p{margin:0;color:var(--muted);max-width:60ch;line-height:1.7}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .metric,.service,.case,.review,.article,.network-card,.timeline-item,.compare,.form-card{padding:18px}
    .metric b{display:block;font-size:26px}
    .metric span{display:block;margin-top:6px;color:var(--muted);line-height:1.6;font-size:13px}
    .service h3,.case h3,.review h3,.article h3,.network-card h3,.timeline-item h3{margin:0 0 8px;font-size:18px}
    .service p,.case p,.review p,.article p,.network-card p,.timeline-item p{margin:0;color:var(--muted);line-height:1.75;font-size:14px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .badge{
      display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;
      padding:7px 10px;border-radius:999px;background:#fff2f0;color:#ba2e1a;margin-bottom:12px
    }
    .step-list{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
    .timeline-item{position:relative;overflow:hidden}
    .timeline-item::before{
      content:attr(data-step);position:absolute;right:14px;top:14px;font-size:42px;font-weight:800;color:rgba(255,91,63,.12)
    }
    .timeline-item b{display:block;font-size:15px;margin-bottom:8px}
    .compare-wrap{overflow-x:auto}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 12px;border-bottom:1px solid #f1dcc6;text-align:left;vertical-align:top;font-size:14px}
    th{background:#fff8f1;color:#31384a}
    td{color:#42495a}
    .rating{display:flex;gap:4px;align-items:center;flex-wrap:wrap}
    .star{color:#ff8b12;font-size:18px}
    .quote{
      display:flex;flex-direction:column;gap:12px
    }
    .quote strong{font-size:15px}
    .quote .meta{color:var(--muted);font-size:13px}
    .article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .article a{color:var(--brand);font-weight:700}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud .chip{background:#fff;border-color:#f0dcc5}
    .faq-list{display:grid;gap:12px}
    .faq-item{overflow:hidden;padding:0}
    .faq-q{
      width:100%;border:0;background:transparent;color:var(--text);cursor:pointer;
      padding:18px 18px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:16px;font-weight:700;text-align:left
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 18px;color:var(--muted);line-height:1.8}
    .faq-item.open .faq-a{max-height:180px;padding-bottom:18px}
    .faq-plus{font-size:20px;color:var(--brand);font-weight:900}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .field{display:flex;flex-direction:column;gap:8px}
    .field label{font-size:13px;color:#404757;font-weight:700}
    input,select,textarea{
      width:100%;border:1px solid #e8d7c2;border-radius:14px;background:#fff;padding:13px 14px;
      font:inherit;color:var(--text);outline:none;transition:.2s ease
    }
    textarea{min-height:118px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(255,91,63,.65);box-shadow:0 0 0 4px rgba(255,91,63,.10)}
    .form-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:10px}
    .helper{color:var(--muted);font-size:13px;line-height:1.6}
    .footer{
      margin-top:16px;padding:22px 0 26px;border-top:1px solid rgba(239,215,189,.9);
      background:rgba(255,247,239,.8);color:var(--text)
    }
    .footer-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px;align-items:start}
    .footer small,.footer a{color:var(--text)}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{
      display:inline-flex;padding:8px 11px;border:1px solid #e9d7c1;border-radius:999px;background:#fff;color:#364152
    }
    .float-tools{
      position:fixed;right:16px;bottom:16px;z-index:35;display:grid;gap:10px
    }
    .float-tools a,.float-tools button{
      border:0;cursor:pointer;display:flex;align-items:center;justify-content:center;
      width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,#ff6a47,#ff9a3d);
      color:#fff;box-shadow:0 16px 28px rgba(255,91,63,.26)
    }
    .float-tools .secondary{background:#fff;color:var(--text);border:1px solid var(--line)}
    .mobile-nav{
      display:none;padding:0 0 14px
    }
    .mobile-nav .nav-links{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;padding-top:10px}
    .mobile-nav .nav-links a,.mobile-nav .nav-links .btn{justify-content:center;width:100%}
    .section-card{padding:18px}
    .pair{display:grid;grid-template-columns:1fr 1fr;gap:14px;align-items:start}
    .image-card{
      background:linear-gradient(135deg,#fff,#fff4e8);border:1px solid #f0dcc5;border-radius:18px;padding:12px
    }
    .image-card img{width:100%;border-radius:14px}
    .network-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .price-box{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .price{padding:18px;border:1px solid #f0dcc5;border-radius:20px;background:linear-gradient(180deg,#fff,#fff5ec)}
    .price strong{display:block;font-size:28px;margin:8px 0;color:#171b24}
    .price ul{margin:12px 0 0;padding-left:18px;color:var(--muted);line-height:1.8}
    .scroll-tip{color:var(--muted);font-size:13px}
    .home-link{color:var(--brand);font-weight:800}
    .logos{display:flex;flex-wrap:wrap;gap:10px}
    .logos .chip{background:#fff}
    .fade{opacity:0;transform:translateY(16px);transition:.5s ease}
    .fade.show{opacity:1;transform:none}
    @media (max-width: 1024px){
      .hero-grid,.footer-grid,.pair,.grid-4,.grid-3,.step-list,.network-grid,.price-box{grid-template-columns:1fr 1fr}
      .article-list{grid-template-columns:1fr}
      .hero-stats{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width: 768px){
      .nav-links,.nav-actions .btn-outline{display:none}
      .menu-btn{display:inline-flex}
      .mobile-nav.show{display:block}
      .hero{padding-top:20px}
      .hero-grid,.footer-grid,.pair,.grid-4,.grid-3,.step-list,.network-grid,.price-box,.form-grid{grid-template-columns:1fr}
      .hero-main{padding:24px}
      .hero-stats{grid-template-columns:1fr 1fr}
      .section-head{align-items:flex-start;flex-direction:column}
      .btn{width:100%}
      .hero-cta,.form-actions{width:100%}
      .hero-cta .btn{width:auto;flex:1}
      .float-tools{right:12px;bottom:12px}
      table{min-width:720px}
    }