:root{
      --bg:#f7f8fc;
      --panel:#ffffff;
      --panel-2:#f2f5ff;
      --text:#162033;
      --muted:#5d6b82;
      --line:#dde4f2;
      --brand:#5c6bff;
      --brand-2:#21c4a6;
      --brand-3:#ff8a5b;
      --shadow:0 18px 50px rgba(32, 50, 95, .10);
      --radius:22px;
      --radius-sm:16px;
      --max: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(92,107,255,.10), transparent 28%),
        radial-gradient(circle at top right, rgba(33,196,166,.12), transparent 30%),
        linear-gradient(180deg, #fff 0%, #f7f8fc 40%, #f4f7ff 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max), calc(100% - 32px)); margin:0 auto}
    header{position:sticky;top:0;z-index:50;backdrop-filter:blur(16px);background:rgba(247,248,252,.82);border-bottom:1px solid rgba(221,228,242,.7)}
    .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:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:0 8px 20px rgba(0,0,0,.08)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:3px}
    nav{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    nav a{font-size:14px;color:#30405c;padding:8px 10px;border-radius:999px;transition:.25s}
    nav a:hover{background:#eef2ff;color:#243153}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:none;border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer;
      transition:transform .2s ease, box-shadow .2s ease, background .2s ease;
      box-shadow:0 12px 24px rgba(92,107,255,.16);
    }
    .btn:hover{transform:translateY(-1px)}
    .btn-primary{background:linear-gradient(135deg, var(--brand), #7d5cff); color:#fff}
    .btn-secondary{background:#fff;color:#22304a;border:1px solid var(--line);box-shadow:none}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
    .hero{padding:56px 0 28px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
    .hero-panel{
      background:linear-gradient(135deg, rgba(92,107,255,.10), rgba(33,196,166,.10) 52%, rgba(255,138,91,.08));
      border:1px solid rgba(112,128,191,.18);
      box-shadow:var(--shadow);
      border-radius:30px;
      padding:34px;
      position:relative;
      overflow:hidden;
    }
    .hero-panel::before,.hero-panel::after{
      content:"";position:absolute;border-radius:999px;filter:blur(2px);opacity:.8;pointer-events:none
    }
    .hero-panel::before{width:180px;height:180px;right:-40px;top:-50px;background:radial-gradient(circle, rgba(92,107,255,.22), transparent 65%)}
    .hero-panel::after{width:220px;height:220px;left:-70px;bottom:-120px;background:radial-gradient(circle, rgba(33,196,166,.18), transparent 70%)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:#33415f;background:rgba(255,255,255,.7);border:1px solid rgba(221,228,242,.9);padding:8px 12px;border-radius:999px}
    h1{margin:16px 0 14px;font-size:clamp(32px,5vw,56px);line-height:1.06;letter-spacing:-.03em}
    .lead{max-width:680px;font-size:17px;line-height:1.8;color:var(--muted);margin:0 0 20px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:24px}
    .mini-stat{background:rgba(255,255,255,.76);border:1px solid rgba(221,228,242,.95);border-radius:20px;padding:14px}
    .mini-stat b{display:block;font-size:18px;margin-bottom:6px}
    .mini-stat span{font-size:13px;color:var(--muted);line-height:1.5}
    .side-card{
      background:var(--panel);
      border:1px solid var(--line);
      border-radius:30px;
      box-shadow:var(--shadow);
      padding:24px;
      display:grid;
      gap:16px;
    }
    .side-card h2,.section-title h2{margin:0;font-size:28px;line-height:1.15}
    .section-title p{margin:10px 0 0;color:var(--muted);line-height:1.7}
    .stat-grid,.cap-grid,.case-grid,.review-grid,.article-grid,.compare-grid,.faq-grid{display:grid;gap:16px}
    .stat-grid{grid-template-columns:repeat(4,minmax(0,1fr));padding:18px 0 0}
    .stat{
      background:var(--panel);
      border:1px solid var(--line);
      border-radius:24px;
      padding:20px;
      box-shadow:0 8px 20px rgba(32,50,95,.05);
    }
    .stat strong{display:block;font-size:28px;line-height:1.1}
    .stat span{display:block;margin-top:8px;color:var(--muted);line-height:1.6}
    section{padding:18px 0}
    .section-box{background:rgba(255,255,255,.7);border:1px solid rgba(221,228,242,.85);border-radius:30px;padding:26px;box-shadow:0 10px 30px rgba(32,50,95,.04)}
    .cap-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
    .card{
      background:var(--panel);
      border:1px solid var(--line);
      border-radius:24px;
      padding:22px;
      box-shadow:0 10px 24px rgba(32,50,95,.05);
      transition:transform .2s ease, box-shadow .2s ease;
    }
    .card:hover{transform:translateY(-3px);box-shadow:0 16px 30px rgba(32,50,95,.10)}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.7}
    .badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;padding:7px 10px;border-radius:999px;background:#eef3ff;color:#32406a;margin-bottom:12px}
    .grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{background:linear-gradient(180deg,#fff,#f7f9ff);border:1px solid var(--line);border-radius:22px;padding:20px}
    .step b{display:flex;width:34px;height:34px;align-items:center;justify-content:center;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;margin-bottom:12px}
    .table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:22px;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:#f4f7ff;font-size:14px}
    td{color:#30405c}
    .accent{color:#1f4bd6;font-weight:700}
    .highlight{color:#0c866e;font-weight:700}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#30405c;font-size:13px}
    .timeline{display:grid;gap:14px}
    .time-item{display:grid;grid-template-columns:110px 1fr;gap:14px;align-items:start;padding:16px 18px;border-radius:20px;background:#fff;border:1px solid var(--line)}
    .time-item strong{color:var(--brand)}
    .compare-score{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
    .score{
      font-size:38px;font-weight:800;letter-spacing:-.04em;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      -webkit-background-clip:text;background-clip:text;color:transparent
    }
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden}
    .faq-q{width:100%;text-align:left;background:none;border:none;padding:18px 20px;font-size:16px;font-weight:700;color:#1f2c44;display:flex;justify-content:space-between;gap:16px;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 20px;color:var(--muted)}
    .faq-item.active .faq-a{max-height:180px;padding-bottom:18px}
    .review-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
    .article-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    input,select,textarea{
      width:100%;padding:13px 14px;border-radius:14px;border:1px solid var(--line);
      background:#fff;color:var(--text);font:inherit;outline:none
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(92,107,255,.6);box-shadow:0 0 0 4px rgba(92,107,255,.10)}
    .full{grid-column:1 / -1}
    footer{
      margin-top:22px;
      background:#10192d;
      color:#d8e0f5;
      padding:28px 0 26px;
    }
    footer a{color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;align-items:start}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
    .footer-links a{padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.08)}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:80;display:grid;gap:10px
    }
    .float-btn{
      width:48px;height:48px;border-radius:50%;border:none;cursor:pointer;
      display:inline-flex;align-items:center;justify-content:center;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 14px 30px rgba(30,52,120,.22)
    }
    .kf{
      position:fixed;left:18px;bottom:18px;z-index:80;
      background:#fff;border:1px solid var(--line);border-radius:22px;padding:12px;box-shadow:var(--shadow);width:140px
    }
    .kf img{border-radius:14px;margin-bottom:8px}
    .reveal{opacity:0;transform:translateY(14px);transition:.55s ease}
    .reveal.in{opacity:1;transform:none}
    @media (max-width: 1024px){
      .hero-grid,.grid-2,.footer-grid{grid-template-columns:1fr}
      .stat-grid,.cap-grid,.steps,.review-grid,.article-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    }
    @media (max-width: 768px){
      .menu-toggle{display:inline-flex}
      nav{display:none;width:100%;padding:10px 0 0}
      nav.open{display:flex;flex-direction:column;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px}
      .topbar{flex-wrap:wrap}
      .nav-actions{width:100%;justify-content:flex-start}
      .hero{padding-top:28px}
      .hero-panel,.side-card,.section-box{padding:22px}
      .hero-points,.stat-grid,.cap-grid,.steps,.review-grid,.article-grid,.form-grid{grid-template-columns:1fr}
      .time-item{grid-template-columns:1fr}
      .kf{display:none}
    }