:root{
      --bg:#f6f8fc;
      --bg2:#ffffff;
      --card:#ffffff;
      --line:#d9e2f0;
      --text:#1f2a37;
      --muted:#5f6b7a;
      --brand:#2457ff;
      --brand2:#7b61ff;
      --accent:#00b7c2;
      --warm:#ffb347;
      --ok:#16a34a;
      --shadow:0 18px 40px rgba(36,87,255,.10);
      --shadow2:0 10px 24px rgba(31,42,55,.08);
      --radius:20px;
      --radius2:14px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-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(123,97,255,.12), transparent 28%),
        radial-gradient(circle at 90% 12%, rgba(0,183,194,.12), transparent 22%),
        linear-gradient(180deg,#fbfcff 0%, #f5f8fd 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    header{
      position:sticky;top:0;z-index:60;
      backdrop-filter:saturate(180%) blur(12px);
      background:rgba(250,252,255,.86);
      border-bottom:1px solid rgba(217,226,240,.8);
    }
    .topbar{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:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;box-shadow:var(--shadow2)}
    .brand h2{margin:0;font-size:18px;line-height:1.1}
    .brand p{margin:4px 0 0;color:var(--muted);font-size:12px}
    nav{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
    .nav-links a{font-size:14px;color:#334155;padding:8px 10px;border-radius:10px}
    .nav-links a:hover{background:#eef3ff;color:#1839b3}
    .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:11px 16px;font-weight:700;font-size:14px;transition:.25s ease;
      box-shadow:none;cursor:pointer;white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 14px 28px rgba(36,87,255,.18)}
    .btn-primary:hover{transform:translateY(-2px);filter:saturate(1.05)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:#b7c8ff;color:#1839b3;transform:translateY(-2px)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;color:var(--text)}
    .hero{padding:34px 0 26px}
    .hero-wrap{
      display:grid;grid-template-columns:1.18fr .82fr;gap:22px;align-items:stretch;
    }
    .hero-main,.hero-side,.card,.panel,.faq-item,.quote,.form-card,.compare{
      background:rgba(255,255,255,.86);
      border:1px solid rgba(217,226,240,.9);
      border-radius:var(--radius);
      box-shadow:var(--shadow2);
    }
    .hero-main{padding:34px;position:relative;overflow:hidden}
    .hero-main::before,.hero-main::after{
      content:"";position:absolute;border-radius:999px;pointer-events:none;filter:blur(2px)
    }
    .hero-main::before{width:240px;height:240px;right:-80px;top:-80px;background:radial-gradient(circle, rgba(123,97,255,.16), transparent 65%)}
    .hero-main::after{width:180px;height:180px;left:-60px;bottom:-70px;background:radial-gradient(circle, rgba(0,183,194,.16), transparent 64%)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#eef4ff;color:#2347d0;border:1px solid #dbe7ff;padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{margin:18px 0 12px;font-size:clamp(30px,5vw,48px);line-height:1.08;letter-spacing:-.03em}
    .lead{margin:0;color:var(--muted);font-size:16px;line-height:1.85;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .mini{
      padding:14px;border-radius:16px;background:linear-gradient(180deg,#fff, #f7faff);
      border:1px solid #e1e8f5
    }
    .mini strong{display:block;font-size:18px;color:#16325c}
    .mini span{display:block;color:var(--muted);font-size:13px;margin-top:5px;line-height:1.5}
    .hero-side{padding:24px;display:grid;gap:14px}
    .side-box{padding:18px;border-radius:18px;background:linear-gradient(180deg,#f8fbff,#fff);border:1px solid #e3eaf6}
    .side-box h3{margin:0 0 8px;font-size:18px}
    .side-box p,.side-box li{margin:0;color:var(--muted);line-height:1.8;font-size:14px}
    .side-box ul{margin:10px 0 0;padding-left:18px}
    section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:14px}
    .section-head h2{margin:0;font-size:28px;line-height:1.15}
    .section-head p{margin:0;color:var(--muted);max-width:60ch;line-height:1.75}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .card{padding:18px}
    .card h3{margin:8px 0 8px;font-size:18px}
    .card p,.card li{margin:0;color:var(--muted);line-height:1.8;font-size:14px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid #dbe6f7;color:#35507c;font-size:13px}
    .timeline{display:grid;gap:12px}
    .step{
      display:grid;grid-template-columns:54px 1fr;gap:14px;align-items:start;padding:16px;border-radius:18px;background:#fff;border:1px solid #e3eaf6
    }
    .step-num{
      width:54px;height:54px;border-radius:18px;background:linear-gradient(135deg,#2457ff,#7b61ff);color:#fff;
      display:grid;place-items:center;font-weight:800;font-size:18px
    }
    .step h3{margin:0 0 6px;font-size:17px}
    .step p{margin:0;color:var(--muted);line-height:1.75;font-size:14px}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid #dbe4f2;background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;border-bottom:1px solid #e8eef7;text-align:left;font-size:14px;vertical-align:top}
    th{background:#f4f7fc;color:#243b60}
    tr:last-child td{border-bottom:none}
    .highlight{background:#f7fbff}
    .review{display:grid;gap:10px}
    .stars{color:#f59e0b;font-size:18px;letter-spacing:2px}
    .score{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;background:#eef4ff;border:1px solid #dbe4ff;border-radius:999px;font-size:13px;color:#2443b0;font-weight:700}
    .compare-badge{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px}
    .quote{
      padding:18px;display:grid;gap:12px
    }
    .quote .who{display:flex;align-items:center;justify-content:space-between;gap:10px}
    .quote strong{font-size:16px}
    .quote span{font-size:13px;color:var(--muted)}
    .quote p{margin:0;color:#415164;line-height:1.8;font-size:14px}
    .faq-item{padding:0;overflow:hidden}
    .faq-q{
      width:100%;border:0;background:transparent;color:var(--text);padding:18px;display:flex;align-items:center;justify-content:space-between;gap:14px;
      font-size:16px;font-weight:700;text-align:left;cursor:pointer
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 18px}
    .faq-a p{margin:0 0 16px;color:var(--muted);line-height:1.8}
    .faq-item.open .faq-a{max-height:220px}
    .faq-item.open .faq-q .chev{transform:rotate(180deg)}
    .chev{transition:.25s ease}
    .form-card{padding:20px}
    form{display:grid;gap:14px}
    .fields{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:grid;gap:8px}
    .field label{font-size:14px;font-weight:700;color:#334155}
    .field input,.field select,.field textarea{
      width:100%;border:1px solid #d8e2f0;border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:var(--text);outline:none
    }
    .field textarea{min-height:120px;resize:vertical}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:#8ea8ff;box-shadow:0 0 0 4px rgba(36,87,255,.08)}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
    .note{color:var(--muted);font-size:13px;line-height:1.7}
    .media-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .media-card{border-radius:18px;overflow:hidden;border:1px solid #dce5f3;background:#fff;box-shadow:var(--shadow2)}
    .media-card img{width:100%;height:auto}
    .list-links{display:grid;gap:10px}
    .list-links a{padding:12px 14px;border-radius:14px;background:#fff;border:1px solid #e1e8f5;color:#26406b}
    .list-links a:hover{border-color:#b8c9ff;color:#1839b3}
    .footer{
      margin-top:18px;padding:24px 0 30px;background:linear-gradient(180deg,#f5f8fd,#eef4fb);border-top:1px solid #dce5f2;color:#334155
    }
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px;align-items:start}
    .footer h3{margin:0 0 10px;font-size:16px;color:#172554}
    .footer p,.footer a,.footer li{color:#42556f;font-size:14px;line-height:1.8}
    .footer ul{margin:0;padding-left:18px}
    .foot-bottom{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:16px;padding-top:14px;border-top:1px solid #d8e2f0;font-size:13px;color:#5a6b80}
    .float-box{
      position:fixed;right:18px;bottom:18px;z-index:70;display:grid;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:16px;background:linear-gradient(135deg,#2457ff,#00b7c2);color:#fff;display:grid;place-items:center;
      box-shadow:0 12px 26px rgba(36,87,255,.22)
    }
    .float-btn:hover{transform:translateY(-2px)}
    .hamburger-lines{display:block;width:18px;height:2px;background:#274060;position:relative;border-radius:2px}
    .hamburger-lines::before,.hamburger-lines::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#274060;border-radius:2px}
    .hamburger-lines::before{top:-6px}.hamburger-lines::after{top:6px}
    .scroll-top{display:none}
    .reveal{opacity:0;transform:translateY(18px);transition:.55s ease}
    .reveal.show{opacity:1;transform:translateY(0)}
    @media (max-width: 1024px){
      .hero-wrap,.grid-4,.grid-3,.footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 768px){
      .container{width:min(var(--container), calc(100% - 20px))}
      .topbar{flex-wrap:wrap}
      nav{width:100%}
      .nav-links,.nav-cta{display:none}
      .menu-btn{display:inline-flex}
      .nav-open .nav-links,.nav-open .nav-cta{display:flex;width:100%}
      .nav-open nav{display:grid;gap:12px}
      .nav-links{flex-direction:column;align-items:flex-start;background:#fff;border:1px solid var(--line);padding:10px;border-radius:14px}
      .nav-cta{justify-content:flex-start}
      .hero-wrap,.grid-4,.grid-3,.grid-2,.footer-grid,.fields,.media-grid{grid-template-columns:1fr}
      .hero-main{padding:24px}
      .hero-points{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .step{grid-template-columns:1fr}
      .step-num{width:48px;height:48px}
      .float-box{right:12px;bottom:12px}
      .scroll-top{display:grid}
    }