:root{
      --bg:#f5f7ff;
      --bg2:#fff9f2;
      --card:#ffffff;
      --text:#18304a;
      --muted:#5f6f86;
      --line:#dde6f2;
      --primary:#4367ff;
      --primary2:#7c4dff;
      --accent:#15b8a6;
      --warm:#ff8b5c;
      --shadow:0 18px 50px rgba(32, 64, 128, .12);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{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;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(67,103,255,.14), transparent 34%),
        radial-gradient(circle at 85% 15%, rgba(255,139,92,.12), transparent 28%),
        linear-gradient(180deg, var(--bg) 0%, #fbfcff 36%, #fff 100%);
    }
    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;
      backdrop-filter:blur(16px);
      background:rgba(245,247,255,.78);
      border-bottom:1px solid rgba(221,230,242,.9);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:18px;
      min-height:74px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;border:1px solid var(--line);padding:4px}
    .brand .name{font-weight:800;letter-spacing:.5px;font-size:18px}
    .brand .sub{font-size:12px;color:var(--muted);margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
    .nav-links a{font-size:14px;color:var(--muted);padding:8px 0;position:relative}
    .nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:linear-gradient(90deg,var(--primary),var(--accent));transition:.25s}
    .nav-links a:hover{color:var(--text)}
    .nav-links a:hover::after{width:100%}
    .nav-actions{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;font-size:14px;transition:.25s;
      cursor:pointer;white-space:nowrap;
    }
    .btn-primary{color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary2));box-shadow:0 14px 30px rgba(67,103,255,.22)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(67,103,255,.28)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{transform:translateY(-2px);border-color:#c2d3ef}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px}
    .hero{
      padding:42px 0 20px;
      position:relative;
      overflow:hidden;
    }
    .hero::before{
      content:"";
      position:absolute;inset:0;
      background:
        linear-gradient(135deg, rgba(67,103,255,.08), rgba(124,77,255,.04) 42%, transparent 70%),
        radial-gradient(circle at 75% 25%, rgba(21,184,166,.12), transparent 26%);
      pointer-events:none;
    }
    .hero-grid{
      position:relative;
      display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch;
    }
    .hero-copy,.hero-panel,.section-card,.info-card,.feature-card,.review-card,.faq-item,.article-item,.compare-card,.form-card,.timeline-card,.price-card,.network-card{
      background:var(--card);border:1px solid rgba(221,230,242,.95);border-radius:var(--radius);box-shadow:var(--shadow);
    }
    .hero-copy{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:#3557d6;background:linear-gradient(90deg, rgba(67,103,255,.12), rgba(21,184,166,.12));padding:8px 14px;border-radius:999px}
    h1{margin:16px 0 14px;font-size:clamp(32px,5vw,54px);line-height:1.12;letter-spacing:-.02em}
    .lead{font-size:16px;line-height:1.8;color:var(--muted);margin:0 0 22px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:18px}
    .mini-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:20px}
    .stat{
      background:linear-gradient(180deg,#fff, #f8fbff);
      border:1px solid var(--line);border-radius:18px;padding:16px 14px
    }
    .stat strong{display:block;font-size:22px;margin-bottom:6px}
    .stat span{font-size:13px;color:var(--muted);line-height:1.5}
    .hero-panel{padding:22px;display:flex;flex-direction:column;gap:14px}
    .panel-top{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .panel-chip{
      border-radius:18px;padding:16px;border:1px solid var(--line);
      background:linear-gradient(180deg,rgba(67,103,255,.06),rgba(255,255,255,1));
    }
    .panel-chip h3{margin:0 0 8px;font-size:15px}
    .panel-chip p{margin:0;color:var(--muted);font-size:13px;line-height:1.7}
    .hero-note{
      padding:16px 18px;border-radius:18px;background:linear-gradient(135deg, rgba(255,139,92,.12), rgba(67,103,255,.08));
      color:#35506f;font-size:14px;line-height:1.7
    }
    .section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin:4px 0 16px}
    .section-head h2{margin:0;font-size:clamp(24px,3vw,34px)}
    .section-head p{margin:0;color:var(--muted);max-width:680px;line-height:1.7}
    .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}
    .feature-card,.info-card,.review-card,.article-item,.compare-card,.form-card,.timeline-card,.price-card,.network-card,.faq-item{padding:20px}
    .feature-card h3,.info-card h3,.review-card h3,.compare-card h3,.form-card h3,.timeline-card h3,.price-card h3,.network-card h3{margin:0 0 10px;font-size:18px}
    .feature-card p,.info-card p,.review-card p,.compare-card p,.timeline-card p,.price-card p,.network-card p{margin:0;color:var(--muted);line-height:1.7}
    .icon{
      width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(67,103,255,.14), rgba(21,184,166,.14));
      color:#2d4fcb;font-weight:800;margin-bottom:12px
    }
    .tags{display:flex;flex-wrap:wrap;gap:10px}
    .tag{font-size:13px;padding:8px 12px;border-radius:999px;background:#f6f8ff;border:1px solid var(--line);color:#33506f}
    .split{display:grid;grid-template-columns:1.05fr .95fr;gap:16px;align-items:start}
    .list{display:grid;gap:12px;margin:0;padding:0;list-style:none}
    .list li{display:flex;gap:10px;align-items:flex-start;color:var(--muted);line-height:1.7}
    .list li::before{content:"";width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));margin-top:8px;flex:0 0 10px}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{
      padding:18px;border-radius:20px;border:1px solid var(--line);background:linear-gradient(180deg,#fff,#f8fbff)
    }
    .step .num{font-weight:800;color:#3557d6;font-size:13px;margin-bottom:10px}
    .step h3{margin:0 0 8px;font-size:17px}
    .step p{margin:0;color:var(--muted);line-height:1.7;font-size:14px}
    .table-wrap{overflow:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f8fbff;font-size:14px}
    td{color:var(--muted);font-size:14px;line-height:1.7}
    .good{color:#167d64;font-weight:700}
    .highlight{color:#213dff;font-weight:800}
    .rating{
      display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:8px
    }
    .stars{color:#ff9d23;font-size:18px;letter-spacing:2px}
    .reviews .review-card{display:flex;flex-direction:column;gap:12px}
    .review-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;color:var(--muted);font-size:13px}
    .quote{font-size:15px;line-height:1.8;color:var(--text)}
    .faq-item{padding:0;overflow:hidden}
    .faq-q{
      width:100%;border:0;background:none;color:var(--text);padding:18px 20px;font-size:16px;font-weight:700;
      display:flex;justify-content:space-between;align-items:center;gap:12px;cursor:pointer;text-align:left
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 20px}
    .faq-a p{margin:0 0 18px;color:var(--muted);line-height:1.8}
    .faq-item.active .faq-a{max-height:220px}
    .faq-item.active .chev{transform:rotate(180deg)}
    .chev{transition:.25s}
    .article-item{display:flex;flex-direction:column;gap:10px}
    .article-item .meta{font-size:13px;color:var(--muted)}
    .article-item a.title-link{font-weight:800;line-height:1.5}
    .article-item a.title-link:hover{color:#3557d6}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    label{font-size:14px;font-weight:700}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;background:#fff;padding:13px 14px;
      font:inherit;color:var(--text);outline:none;transition:.2s
    }
    textarea{min-height:120px;resize:vertical;grid-column:1/-1}
    input:focus,select:focus,textarea:focus{border-color:#8aa4ff;box-shadow:0 0 0 4px rgba(67,103,255,.08)}
    .form-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:10px}
    .footer{
      margin-top:18px;
      padding:24px 0 28px;
      border-top:1px solid var(--line);
      background:linear-gradient(180deg, rgba(245,247,255,.4), rgba(255,255,255,.95));
      color:var(--text);
    }
    .footer a{color:#3457d6}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .footer small{color:var(--muted);line-height:1.8}
    .home-link{font-weight:800;color:#3557d6}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:10px
    }
    .float-btn{
      width:48px;height:48px;border-radius:16px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow);
      display:grid;place-items:center;color:#3557d6;font-weight:800
    }
    .kefu-card{
      position:fixed;left:18px;bottom:18px;z-index:60;width:210px;padding:14px;
      background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)
    }
    .kefu-card img{border-radius:14px;border:1px solid var(--line);margin-top:10px}
    .kefu-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.7}
    .reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .reveal.show{opacity:1;transform:none}
    .timeline{
      display:grid;gap:12px
    }
    .timeline-item{
      display:grid;grid-template-columns:72px 1fr;gap:14px;align-items:start;
      padding:16px;border:1px solid var(--line);border-radius:18px;background:#fff
    }
    .timeline-item strong{display:block;color:#3557d6}
    .timeline-item span{color:var(--muted);line-height:1.7;font-size:14px}
    .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price-card .amount{font-size:28px;font-weight:900;color:#223e86;margin:10px 0 8px}
    .badge{
      display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:800;color:#fff;
      background:linear-gradient(135deg,var(--warm),#ffb14f);padding:6px 10px;border-radius:999px
    }
    .section-anchor{scroll-margin-top:92px}
    .mobile-only{display:none}
    @media (max-width: 1024px){
      .hero-grid,.split,.footer-grid,.grid-4,.grid-3,.steps,.price-grid{grid-template-columns:1fr 1fr}
      .grid-2{grid-template-columns:1fr}
    }
    @media (max-width: 760px){
      .nav-links,.nav-actions .btn-ghost{display:none}
      .menu-btn,.mobile-only{display:inline-flex}
      .hero-grid,.split,.footer-grid,.grid-4,.grid-3,.grid-2,.steps,.price-grid,.mini-stats,.panel-top,.form-grid{grid-template-columns:1fr}
      .hero-copy,.hero-panel{padding:22px}
      .section-head{flex-direction:column;align-items:flex-start}
      .kefu-card{display:none}
      .floating{right:14px;bottom:14px}
      .menu-panel{
        display:none;position:absolute;left:20px;right:20px;top:74px;padding:14px;border:1px solid var(--line);
        border-radius:18px;background:rgba(255,255,255,.98);box-shadow:var(--shadow)
      }
      .menu-panel.open{display:block}
      .menu-panel a{display:block;padding:12px 0;color:var(--text);border-bottom:1px solid var(--line)}
      .menu-panel a:last-child{border-bottom:0}
    }