:root{
      --bg:#f7f8fc;
      --panel:#ffffff;
      --panel-2:#f1f5ff;
      --text:#142033;
      --muted:#5f6b85;
      --line:#e3e8f3;
      --brand:#2563eb;
      --brand-2:#7c3aed;
      --brand-3:#06b6d4;
      --accent:#f97316;
      --shadow:0 18px 50px rgba(20,32,51,.08);
      --radius:22px;
      --radius-sm:16px;
      --max:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(37,99,235,.10), transparent 24%),
        radial-gradient(circle at 85% 10%, rgba(124,58,237,.10), transparent 24%),
        linear-gradient(180deg, #fff 0%, #f7f8fc 24%, #f7f8fc 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{max-width:var(--max);margin:0 auto;padding:0 20px}
    .topbar{
      position:sticky;top:0;z-index:50;
      backdrop-filter:saturate(180%) blur(16px);
      background:rgba(255,255,255,.82);
      border-bottom:1px solid rgba(227,232,243,.9);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:18px;
      min-height:76px;
    }
    .brand{display:flex;align-items:center;gap:12px;font-weight:800}
    .brand img{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;border:1px solid var(--line);padding:5px}
    .brand .name{display:flex;flex-direction:column;line-height:1.1}
    .brand small{font-weight:600;color:var(--muted)}
    .navlinks{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .navlinks a{font-size:14px;color:var(--muted);padding:8px 0;position:relative}
    .navlinks a:hover,.navlinks a.active{color:var(--text)}
    .navlinks a::after{
      content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;
      background:linear-gradient(90deg,var(--brand),var(--brand-2));transform:scaleX(0);transform-origin:left;transition:.25s ease;
    }
    .navlinks a:hover::after,.navlinks a.active::after{transform:scaleX(1)}
    .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;cursor:pointer;transition:.25s ease;
      box-shadow:none;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 14px 26px rgba(37,99,235,.18)}
    .btn-primary:hover{transform:translateY(-1px);box-shadow:0 18px 32px rgba(37,99,235,.22)}
    .btn-ghost{background:#fff;color:var(--text);border-color:var(--line)}
    .btn-ghost:hover{border-color:#b9c5dc;transform:translateY(-1px)}
    .menu-toggle{display:none}
    .hero{
      padding:52px 0 30px;
      position:relative;
      overflow:hidden;
    }
    .hero::before,.hero::after{
      content:"";position:absolute;border-radius:50%;filter:blur(20px);pointer-events:none;
    }
    .hero::before{width:220px;height:220px;background:rgba(37,99,235,.10);right:-40px;top:10px}
    .hero::after{width:180px;height:180px;background:rgba(249,115,22,.10);left:-40px;bottom:10px}
    .hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:24px;align-items:stretch}
    .hero-copy,.hero-panel,.card,.info-card,.step,.faq-item,.review,.article,.quote,.table-wrap,.form-wrap,.mini-panel{
      background:rgba(255,255,255,.90);
      border:1px solid rgba(227,232,243,.95);
      box-shadow:var(--shadow);
    }
    .hero-copy{border-radius:28px;padding:34px;position:relative;overflow:hidden}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      background:linear-gradient(135deg,rgba(37,99,235,.10),rgba(124,58,237,.10));
      color:#29407a;border:1px solid rgba(37,99,235,.15);
      padding:8px 14px;border-radius:999px;font-size:13px;font-weight:700;
    }
    h1{margin:18px 0 14px;font-size:clamp(34px,5vw,58px);line-height:1.06;letter-spacing:-.03em}
    .hero p{margin:0;color:var(--muted);font-size:16px;line-height:1.85}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .pill{
      padding:14px 14px;border-radius:18px;background:linear-gradient(180deg,#fff,#f7faff);
      border:1px solid var(--line);min-height:92px
    }
    .pill strong{display:block;font-size:15px;margin-bottom:6px}
    .pill span{font-size:13px;color:var(--muted);line-height:1.6}
    .hero-panel{border-radius:28px;padding:24px;display:grid;gap:14px;align-content:start}
    .hero-panel .stat{
      border-radius:20px;padding:16px 16px 14px;background:linear-gradient(135deg,#fff, #f4f8ff);
      border:1px solid var(--line)
    }
    .stat strong{display:block;font-size:30px;line-height:1;color:#14325f}
    .stat span{display:block;margin-top:6px;color:var(--muted);font-size:13px}
    .stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .section{padding:28px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section h2{margin:0;font-size:clamp(24px,3vw,34px);line-height:1.15}
    .section .sub{margin:8px 0 0;color:var(--muted);line-height:1.75;max-width:820px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .card,.info-card,.step,.review,.article,.faq-item,.quote,.mini-panel,.form-wrap,.table-wrap{border-radius:24px}
    .card{padding:20px}
    .card h3,.info-card h3,.step h3,.review h3,.article h3,.mini-panel h3{margin:0 0 10px;font-size:18px}
    .meta{color:var(--muted);font-size:14px;line-height:1.75}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#334155;font-size:13px}
    .info-card{padding:20px;background:linear-gradient(180deg,rgba(255,255,255,.96),rgba(244,248,255,.92))}
    .icon{
      width:42px;height:42px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(37,99,235,.14),rgba(124,58,237,.14));
      margin-bottom:14px;font-weight:800;color:#27457a
    }
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{padding:20px;position:relative}
    .step .num{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:12px;background:#f0f5ff;color:#2951a3;font-weight:800;margin-bottom:12px}
    .compare{overflow:auto}
    table{width:100%;border-collapse:collapse;min-width:900px}
    th,td{padding:16px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f6f8ff;color:#23324d;font-size:14px}
    td{color:#334155;font-size:14px;line-height:1.7}
    .good{color:#0f766e;font-weight:700}
    .highlight{color:#1d4ed8;font-weight:800}
    .dual{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .mini-panel{padding:20px}
    .mini-list{margin:0;padding-left:18px;color:var(--muted);line-height:1.9}
    .article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .article{padding:18px}
    .article a{color:var(--text);font-weight:700}
    .article .date{margin-top:12px;font-size:13px;color:var(--muted)}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review{padding:20px}
    .stars{color:#f59e0b;letter-spacing:2px;font-size:15px}
    .review .role{margin-top:10px;color:#1f3f71;font-weight:700}
    .faq{display:grid;gap:12px}
    .faq-item{padding:0;overflow:hidden}
    .faq-q{
      width:100%;background:#fff;border:0;padding:18px 20px;display:flex;align-items:center;justify-content:space-between;
      color:var(--text);font-size:16px;font-weight:700;cursor:pointer;text-align:left
    }
    .faq-a{padding:0 20px 18px;color:var(--muted);line-height:1.8;display:none}
    .faq-item.open .faq-a{display:block}
    .faq-item.open .faq-q{background:linear-gradient(180deg,#fff,#f8fbff)}
    .form-wrap{padding:22px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    .field.full{grid-column:1 / -1}
    label{font-size:14px;font-weight:700;color:#30405f}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:16px;background:#fff;color:var(--text);
      padding:14px 15px;font:inherit;outline:none;transition:.2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:#9db4ef;box-shadow:0 0 0 4px rgba(37,99,235,.08)}
    textarea{min-height:120px;resize:vertical}
    .footer{
      margin-top:26px;
      padding:26px 0 28px;
      background:#0f172a;
      color:#dbe4ff
    }
    .footer a{color:#e8eeff}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr 1fr;gap:18px;align-items:start}
    .footer .brand small,.footer .meta{color:#b9c7ea}
    .footer .tag{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.10);color:#e5ecff}
    .bottom{border-top:1px solid rgba(255,255,255,.10);margin-top:18px;padding-top:16px;color:#a8b6d9;font-size:13px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px
    }
    .float-btn{
      width:54px;height:54px;border-radius:18px;background:linear-gradient(135deg,var(--brand),var(--brand-2));
      color:#fff;display:grid;place-items:center;box-shadow:0 16px 30px rgba(37,99,235,.25)
    }
    .backtop{background:#fff;color:var(--text);border:1px solid var(--line)}
    .mobile-only{display:none}
    .reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .reveal.show{opacity:1;transform:none}
    .center-note{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:14px}
    .note{
      display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#43506d;font-size:13px
    }
    .kefu{
      display:grid;gap:12px;justify-items:center;text-align:center
    }
    .kefu img{width:160px;height:160px;object-fit:cover;border-radius:18px;border:1px solid var(--line);background:#fff}
    .divider{height:1px;background:linear-gradient(90deg,transparent,rgba(37,99,235,.18),transparent);margin:8px 0 0}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-4,.steps,.article-list,.review-grid,.footer-grid,.dual{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .stat-grid{grid-template-columns:1fr 1fr}
      .navlinks{display:none}
      .menu-toggle{display:inline-flex}
      .nav-actions .btn-ghost{display:none}
      .mobile-only{display:inline-flex}
      .nav.open{padding-bottom:16px;align-items:flex-start;flex-direction:column}
      .nav.open .navlinks{display:flex;flex-direction:column;align-items:flex-start;gap:10px;width:100%;padding:6px 0 4px}
    }
    @media (max-width: 640px){
      .container{padding:0 14px}
      .hero{padding-top:28px}
      .hero-copy,.hero-panel,.card,.info-card,.step,.review,.article,.faq-item,.quote,.mini-panel,.form-wrap,.table-wrap{border-radius:20px}
      .hero-copy{padding:24px}
      .section{padding:22px 0}
      .form-grid{grid-template-columns:1fr}
      .stat-grid{grid-template-columns:1fr}
      .footer{padding-bottom:92px}
    }