:root{--bg:#f7f8fc;--card:#ffffff;--text:#132033;--muted:#5e6b7e;--line:#dfe5f0;--pri:#2f6bff;--pri2:#7c4dff;--acc:#ff7a45;--shadow:0 18px 45px rgba(28,52,110,.10);--radius:22px;}
    *{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:linear-gradient(180deg,#f7f9ff 0%,#fbfcfe 35%,#f7f8fc 100%);color:var(--text)}
    a{color:inherit;text-decoration:none} img{display:block;max-width:100%} button,input,select,textarea{font:inherit}
    .container{width:min(1180px,calc(100% - 32px));margin:0 auto}
    header{position:sticky;top:0;z-index:30;background:rgba(247,249,255,.86);backdrop-filter:blur(14px);border-bottom:1px solid rgba(223,229,240,.7)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
    .brand{display:flex;align-items:center;gap:12px;font-weight:800}
    .brand .logo{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;box-shadow:var(--shadow)}
    .brand strong{font-size:18px}
    .brand small{display:block;color:var(--muted);font-weight:600;font-size:12px;margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{color:var(--text);font-size:14px;padding:8px 10px;border-radius:999px}
    .nav-links a:hover{background:#eef3ff;color:var(--pri)}
    .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:.25s ease;box-shadow:none}
    .btn-primary{background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;box-shadow:0 12px 24px rgba(47,107,255,.24)}
    .btn-ghost{background:#eef3ff;color:#234}
    .btn:hover{transform:translateY(-2px)}
    .menu-btn{display:none;background:#eef3ff;border:none;border-radius:14px;padding:10px 12px}
    main{padding-bottom:24px}
    section{padding:54px 0}
    .hero{padding:36px 0 40px;position:relative;overflow:hidden}
    .hero:before,.hero:after{content:"";position:absolute;border-radius:50%;filter:blur(18px);opacity:.5;pointer-events:none}
    .hero:before{width:220px;height:220px;background:radial-gradient(circle,rgba(47,107,255,.25),transparent 65%);right:-40px;top:-40px}
    .hero:after{width:260px;height:260px;background:radial-gradient(circle,rgba(255,122,69,.18),transparent 65%);left:-70px;bottom:-70px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.panel,.card,.metric,.review,.timeline li,.faq-item,.case,.article,.contact-card,.compare,.price-card{background:rgba(255,255,255,.9);border:1px solid rgba(223,229,240,.95);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#eef3ff;color:var(--pri);font-weight:700;font-size:13px}
    h1{font-size:clamp(30px,4.2vw,54px);line-height:1.06;margin:16px 0 14px;letter-spacing:-.02em}
    .lead{font-size:16px;line-height:1.8;color:var(--muted);max-width:58ch}
    .hero-points{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 26px;padding:0;list-style:none}
    .hero-points li{padding:10px 14px;border-radius:999px;background:#f3f6ff;color:#233d6c;border:1px solid #e3e9f8;font-size:14px}
    .hero-cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
    .hero-side{padding:24px;display:grid;gap:14px}
    .mini-stat{padding:18px;border-radius:18px;background:linear-gradient(180deg,#f6f9ff,#ffffff);border:1px solid #e6ecfb}
    .mini-stat strong{display:block;font-size:28px;color:#10223d}
    .mini-stat span{color:var(--muted);font-size:13px}
    .hero-note{padding:16px 18px;border-radius:18px;background:linear-gradient(135deg,rgba(47,107,255,.08),rgba(124,77,255,.08));border:1px solid #dde7ff;color:#1d3562}
    .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}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:18px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);max-width:62ch;line-height:1.7}
    .card,.panel,.review,.article,.case,.faq-item,.price-card,.contact-card,.compare{padding:22px}
    .card:hover,.case:hover,.article:hover,.review:hover,.price-card:hover,.contact-card:hover{transform:translateY(-3px);transition:.25s ease}
    .icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(47,107,255,.12),rgba(124,77,255,.12));color:var(--pri);font-size:20px;margin-bottom:12px}
    .muted{color:var(--muted)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:10px 13px;border-radius:999px;background:#fff;border:1px solid #e4e9f5;color:#334;box-shadow:0 8px 16px rgba(26,43,83,.04)}
    .metrics .metric{padding:20px}
    .metric strong{display:block;font-size:28px;margin-bottom:6px}
    .metric span{color:var(--muted)}
    .panel ul,.card ul,.compare ul{margin:0;padding-left:18px;color:#31435d;line-height:1.8}
    .workflow{counter-reset:step;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step:before{counter-increment:step;content:"0" counter(step);display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;font-weight:800;margin-bottom:12px}
    .table-wrap{overflow:auto;border-radius:20px;border:1px solid #e3e8f3;background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px;border-bottom:1px solid #edf1f7;text-align:left;vertical-align:top}
    th{background:#f5f8ff;color:#16263d}
    .score{display:inline-flex;align-items:center;gap:6px;font-weight:800;color:#1d3562}
    .stars{color:#ffb400;letter-spacing:2px}
    details{border-top:1px solid #edf1f7;padding-top:14px;margin-top:14px}
    details summary{cursor:pointer;font-weight:700;color:#20314b;list-style:none}
    details summary::-webkit-details-marker{display:none}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .review-grid,.case-grid,.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .avatar{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#eaf0ff,#f7eefe);color:#275}
    .review-top{display:flex;align-items:center;gap:12px;margin-bottom:12px}
    .timeline{list-style:none;padding:0;margin:0;display:grid;gap:12px}
    .timeline li{padding:18px 18px 18px 22px;position:relative;border-left:4px solid #8aa7ff}
    .timeline li strong{display:block;margin-bottom:6px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    .field input,.field select,.field textarea{border:1px solid #d9e1ef;border-radius:14px;padding:13px 14px;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:#88a8ff;box-shadow:0 0 0 4px rgba(47,107,255,.08)}
    .full{grid-column:1/-1}
    footer{padding:26px 0 30px;background:#f4f7fd;border-top:1px solid #e0e6f2;color:#243246}
    footer a{color:#1f4ed8}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr 1fr;gap:18px;align-items:start}
    .subtle{font-size:13px;color:#627086;line-height:1.8}
    .floating{position:fixed;right:18px;bottom:18px;z-index:40;display:grid;gap:10px}
    .float-btn{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;box-shadow:0 14px 28px rgba(47,107,255,.28)}
    .float-btn.secondary{background:#fff;color:#244;border:1px solid #d9e2f5}
    .mobile-only{display:none}
    .scroll-reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .scroll-reveal.is-visible{opacity:1;transform:none}
    @media (max-width: 1100px){
      .grid-4,.grid-3,.review-grid,.case-grid,.article-grid,.workflow,.footer-grid{grid-template-columns:repeat(2,1fr)}
      .hero-grid,.grid-2,.faq-grid{grid-template-columns:1fr}
    }
    @media (max-width: 820px){
      .nav-links{display:none}
      .menu-btn,.mobile-only{display:inline-flex}
      .nav.open .nav-links{display:flex;position:absolute;left:16px;right:16px;top:70px;background:#fff;border:1px solid #dfe5f0;border-radius:18px;padding:12px;flex-direction:column;align-items:flex-start;box-shadow:var(--shadow)}
      .nav.open .nav-actions{display:flex;position:absolute;right:16px;top:18px}
      .grid-4,.grid-3,.review-grid,.case-grid,.article-grid,.workflow,.footer-grid,.form-grid{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .hero-main{padding:24px}
      .floating{right:12px;bottom:12px}
      .hero-cta .btn{width:100%}
    }