:root{
      --bg:#f6f7fb;
      --surface:#ffffff;
      --surface-2:#f2f5ff;
      --line:#e4e7ef;
      --text:#1f2937;
      --muted:#5b6577;
      --brand:#4f46e5;
      --brand-2:#7c3aed;
      --accent:#ff7a59;
      --green:#0f9d58;
      --shadow:0 18px 45px rgba(31,41,55,.08);
      --shadow-soft:0 10px 25px rgba(31,41,55,.06);
      --radius:20px;
      --radius-sm:14px;
      --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;
      background:
        radial-gradient(circle at top left, rgba(79,70,229,.08), transparent 28%),
        radial-gradient(circle at top right, rgba(255,122,89,.08), transparent 22%),
        linear-gradient(180deg,#f8f9ff 0%, #f6f7fb 30%, #f7f8fc 100%);
      color:var(--text);
      line-height:1.6;
    }
    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:60;
      backdrop-filter:saturate(160%) blur(14px);
      background:rgba(246,247,251,.82);
      border-bottom:1px solid rgba(228,231,239,.8);
    }
    .nav{
      min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:18px;
    }
    .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;padding:4px;box-shadow:var(--shadow-soft)}
    .brand .name{font-weight:800;font-size:1.05rem;letter-spacing:.2px}
    .brand .sub{font-size:.82rem;color:var(--muted)}
    .nav-links{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:flex-end}
    .nav-links a{font-size:.95rem;color:#344054;padding:8px 10px;border-radius:999px;transition:.2s ease}
    .nav-links a:hover,.nav-links a:focus-visible{background:#fff;color:var(--brand);box-shadow:0 8px 18px rgba(79,70,229,.08)}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:0;border-radius:999px;padding:12px 18px;font-weight:700;
      transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;
      cursor:pointer;white-space:nowrap;
    }
    .btn:hover{transform:translateY(-1px)}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 16px 28px rgba(79,70,229,.22)}
    .btn-primary:hover{box-shadow:0 18px 30px rgba(79,70,229,.28)}
    .btn-ghost{background:#fff;color:var(--text);border:1px solid var(--line)}
    .menu-toggle{display:none}
    .hero{
      padding:54px 0 30px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch;
    }
    .hero-panel{
      position:relative;overflow:hidden;border-radius:28px;background:
      linear-gradient(135deg, rgba(79,70,229,.95), rgba(124,58,237,.92));
      color:#fff;box-shadow:var(--shadow);
      padding:34px;
    }
    .hero-panel::before,
    .hero-panel::after{
      content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.12);filter:blur(2px);
    }
    .hero-panel::before{width:220px;height:220px;right:-70px;top:-55px}
    .hero-panel::after{width:160px;height:160px;right:22%;bottom:-70px}
    .kicker{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.18);padding:8px 12px;border-radius:999px;font-size:.9rem}
    h1{margin:16px 0 14px;font-size:clamp(2rem,4vw,3.6rem);line-height:1.08;letter-spacing:-.03em}
    .hero p{margin:0;color:rgba(255,255,255,.9);max-width:58ch;font-size:1.02rem}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px}
    .metric{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.16);border-radius:18px;padding:16px}
    .metric strong{display:block;font-size:1.25rem;margin-bottom:5px}
    .metric span{color:rgba(255,255,255,.84);font-size:.92rem}
    .hero-side{
      display:grid;gap:16px;
    }
    .side-card{
      background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow-soft);
    }
    .side-card h2,.section h2{margin:0 0 10px;font-size:clamp(1.35rem,2vw,2rem)}
    .side-card p,.section-lead{margin:0;color:var(--muted)}
    .mini-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
    .tag{padding:8px 12px;border-radius:999px;background:#f4f6ff;color:#344054;border:1px solid #e5e9ff;font-size:.92rem}
    .section{padding:22px 0 8px}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:18px}
    .section-head .eyebrow{font-size:.88rem;color:var(--brand);font-weight:800;letter-spacing:.12em;text-transform:uppercase}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .card{
      background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:var(--shadow-soft);
      transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
    }
    .card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d9def0}
    .card h3{margin:0 0 10px;font-size:1.08rem}
    .card p{margin:0;color:var(--muted)}
    .stat{font-size:1.7rem;font-weight:900;color:var(--brand);margin-bottom:8px}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{position:relative}
    .step .num{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,#eef2ff,#e7eaff);color:var(--brand);font-weight:800;margin-bottom:12px}
    .table-wrap{overflow:auto;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-soft)}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px 18px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f8faff;color:#243042;font-size:.95rem}
    tr:last-child td{border-bottom:0}
    .badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:#ecfdf3;color:#137a45;font-size:.86rem;font-weight:700}
    .compare-hero{display:grid;grid-template-columns:.95fr 1.05fr;gap:16px;align-items:stretch}
    .score-box{background:linear-gradient(135deg,#0f172a,#312e81);color:#fff;border-radius:24px;padding:24px}
    .score-box .big{font-size:3rem;font-weight:900;line-height:1}
    .faq details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:0 18px;box-shadow:var(--shadow-soft)}
    .faq details+details{margin-top:12px}
    .faq summary{cursor:pointer;list-style:none;padding:18px 0;font-weight:700}
    .faq summary::-webkit-details-marker{display:none}
    .faq .answer{padding:0 0 18px;color:var(--muted)}
    .testimonials .card{display:flex;flex-direction:column;gap:12px}
    .quote{font-size:.98rem;color:#344054}
    .person{display:flex;align-items:center;gap:12px;margin-top:auto}
    .avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#e9ecff,#ffe9e2);display:grid;place-items:center;font-weight:800;color:#6b4eff}
    .media-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .media-card img{width:100%;border-radius:18px;border:1px solid var(--line);background:#fff}
    .list-links{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
    .list-links a{display:block;padding:12px 14px;border-radius:14px;background:#fff;border:1px solid var(--line);color:#344054}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    .field label{font-size:.92rem;font-weight:700;color:#334155}
    input,select,textarea{
      width:100%;border:1px solid #dbe0ee;background:#fff;border-radius:14px;padding:13px 14px;
      font:inherit;color:var(--text);outline:none;transition:border-color .18s ease, box-shadow .18s ease;
    }
    input:focus,select:focus,textarea:focus{border-color:#8b8ff7;box-shadow:0 0 0 4px rgba(79,70,229,.1)}
    textarea{min-height:120px;resize:vertical}
    .form-actions{margin-top:14px;display:flex;flex-wrap:wrap;gap:12px;align-items:center}
    .note{font-size:.9rem;color:var(--muted)}
    .footer{
      margin-top:24px;padding:24px 0 34px;border-top:1px solid rgba(228,231,239,.9);background:rgba(255,255,255,.55)
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:start}
    .footer a{color:#334155}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:70;display:flex;flex-direction:column;gap:10px
    }
    .floating a,.floating button{
      width:48px;height:48px;border-radius:50%;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-soft);
      display:grid;place-items:center;cursor:pointer;color:#334155
    }
    .reveal{opacity:0;transform:translateY(14px);transition:opacity .55s ease, transform .55s ease}
    .reveal.in{opacity:1;transform:translateY(0)}
    .mobile-panel{display:none}
    .pill-row{display:flex;flex-wrap:wrap;gap:10px}
    .pill-row .tag{background:#fff}
    @media (max-width: 980px){
      .hero-grid,.compare-hero,.footer-grid,.grid-4,.workflow,.grid-3,.media-grid{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .nav-links{display:none}
      .menu-toggle{display:inline-flex}
      .mobile-panel{display:none;padding:0 20px 18px}
      .mobile-panel.open{display:block}
      .mobile-panel .nav-links{display:flex;flex-direction:column;align-items:flex-start;gap:6px;padding:14px 0}
      .mobile-panel .nav-links a{width:100%;background:#fff;border:1px solid var(--line)}
      .hero{padding-top:28px}
    }
    @media (max-width: 640px){
      .container{padding:0 14px}
      .hero-panel,.card,.side-card{padding:18px;border-radius:20px}
      .hero-metrics{grid-template-columns:1fr}
      .hero-actions,.form-grid,.list-links{grid-template-columns:1fr;display:grid}
      .btn{width:100%}
      h1{font-size:1.95rem}
      .nav{min-height:68px}
    }