:root{
      --bg:#f6f7fb;
      --bg2:#eef2ff;
      --card:#ffffff;
      --text:#182033;
      --muted:#5f6b85;
      --line:#dbe2f0;
      --primary:#6d5efc;
      --primary2:#00b7ff;
      --accent:#ff5ea8;
      --good:#14b86a;
      --shadow:0 18px 48px rgba(29,40,72,.12);
      --radius:20px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",PingFang SC,"Microsoft YaHei",sans-serif;background:linear-gradient(180deg,#f7f8fe 0%,#eef4ff 36%,#f7f8fb 100%);color:var(--text);line-height:1.6}
    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:50;background:rgba(247,248,254,.82);backdrop-filter:blur(16px);border-bottom:1px solid rgba(219,226,240,.7)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;border:1px solid var(--line);padding:4px;box-shadow:0 8px 20px rgba(18,28,52,.08)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .nav-links{display:flex;flex-wrap:wrap;gap:6px;justify-content:flex-end;align-items:center}
    .nav-links a,.menu-btn,.ghost-btn,.primary-btn,.submit-btn{border:1px solid transparent;border-radius:999px;padding:10px 14px;font-size:14px;transition:.25s ease}
    .nav-links a{color:var(--text);background:transparent}
    .nav-links a:hover,.ghost-btn:hover,.menu-btn:hover{background:#fff;border-color:var(--line);box-shadow:0 10px 24px rgba(18,28,52,.08);transform:translateY(-1px)}
    .menu-btn{display:none;background:#fff;border-color:var(--line);color:var(--text)}
    .hero{padding:34px 0 20px;position:relative;overflow:hidden}
    .hero::before,.hero::after{content:"";position:absolute;inset:auto;border-radius:50%;filter:blur(10px);pointer-events:none}
    .hero::before{width:340px;height:340px;background:radial-gradient(circle,rgba(109,94,252,.22),rgba(109,94,252,0) 70%);top:-120px;right:-80px}
    .hero::after{width:260px;height:260px;background:radial-gradient(circle,rgba(0,183,255,.18),rgba(0,183,255,0) 72%);bottom:-120px;left:-90px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:20px;align-items:stretch}
    .hero-main,.hero-side,.section-card,.form-card,.faq-item,.review-card,.article-card,.case-card,.compare-card,.price-card,.timeline-item,.info-card{background:rgba(255,255,255,.86);border:1px solid rgba(219,226,240,.9);box-shadow:var(--shadow);border-radius:var(--radius)}
    .hero-main{padding:32px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(90deg,rgba(109,94,252,.12),rgba(0,183,255,.12));color:#3b4ac4;border:1px solid rgba(109,94,252,.18);padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{margin:18px 0 12px;font-size:clamp(30px,5vw,52px);line-height:1.08;letter-spacing:-.02em}
    .lead{margin:0;color:var(--muted);font-size:16px;max-width:62ch}
    .cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .primary-btn{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 12px 28px rgba(109,94,252,.24)}
    .primary-btn:hover{transform:translateY(-2px);filter:saturate(1.05)}
    .ghost-btn{background:#fff;color:var(--text);border-color:var(--line)}
    .hero-side{padding:22px;display:grid;gap:14px;align-content:start}
    .mini-stat{padding:16px;border-radius:16px;background:linear-gradient(180deg,#f8faff,#f1f6ff);border:1px solid var(--line)}
    .mini-stat strong{display:block;font-size:24px}
    .mini-stat span{color:var(--muted);font-size:13px}
    .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:18px 0 0}
    .stat{padding:18px;position:relative;overflow:hidden}
    .stat::after{content:"";position:absolute;inset:auto -20px -20px auto;width:120px;height:120px;background:radial-gradient(circle,rgba(0,183,255,.13),transparent 70%)}
    .stat strong{display:block;font-size:28px}
    .stat span{color:var(--muted);font-size:13px}
    section{padding:18px 0}
    .section-head{display:flex;justify-content:space-between;gap:16px;align-items:end;margin-bottom:14px}
    .section-head h2{margin:0;font-size:26px}
    .section-head p{margin:0;color:var(--muted);max-width:64ch}
    .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-card,.compare-card,.form-card{padding:22px}
    .feature{display:flex;gap:14px;padding:18px;border-radius:18px;background:linear-gradient(180deg,#fff,#f7f9ff);border:1px solid var(--line);transition:.25s ease}
    .feature:hover,.review-card:hover,.article-card:hover,.case-card:hover,.price-card:hover{transform:translateY(-4px);box-shadow:0 18px 34px rgba(29,40,72,.12)}
    .icon{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(109,94,252,.14),rgba(0,183,255,.14));color:#3b4ac4;font-weight:800;flex:none}
    .feature h3,.review-card h3,.article-card h3,.case-card h3,.price-card h3{margin:0 0 6px;font-size:18px}
    .feature p,.review-card p,.article-card p,.case-card p,.price-card p,.timeline-item p,.info-card p{margin:0;color:var(--muted)}
    .chip-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .chip{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#394460;font-size:13px}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .timeline-item{padding:18px;position:relative}
    .timeline-item strong{display:block;margin-bottom:8px}
    .timeline-item::before{content:"";position:absolute;left:18px;top:18px;width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary2))}
    .timeline-item{padding-top:34px}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f7f9ff;color:#23304a;font-size:14px}
    tr:last-child td{border-bottom:none}
    .good{color:var(--good);font-weight:700}
    .compare-badge{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,rgba(20,184,106,.12),rgba(0,183,255,.12));color:#11794a;padding:8px 12px;border-radius:999px;font-weight:700}
    .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price-card{padding:20px}
    .price{font-size:30px;font-weight:800;margin:8px 0}
    .list{padding:0;margin:12px 0 0;list-style:none;display:grid;gap:10px}
    .list li{display:flex;gap:10px;color:#37415b}
    .list li::before{content:"•";color:var(--primary)}
    details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:0 16px;box-shadow:0 10px 24px rgba(18,28,52,.06)}
    summary{cursor:pointer;list-style:none;padding:16px 0;font-weight:700}
    summary::-webkit-details-marker{display:none}
    details p{margin:0 0 16px;color:var(--muted)}
    .faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .review-grid,.article-grid,.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review-card,.article-card,.case-card{padding:20px}
    .stars{color:#ff9f1a;letter-spacing:2px;margin-bottom:10px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    label{display:block;font-size:13px;color:#3a4662;margin-bottom:8px;font-weight:700}
    input,select,textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:var(--text);outline:none;transition:.2s ease}
    input:focus,select:focus,textarea:focus{border-color:rgba(109,94,252,.55);box-shadow:0 0 0 4px rgba(109,94,252,.12)}
    textarea{min-height:120px;resize:vertical}
    .full{grid-column:1/-1}
    .submit-btn{background:linear-gradient(135deg,#ff5ea8,#6d5efc);color:#fff;border:none;cursor:pointer;font-weight:700;padding:13px 18px}
    .submit-btn:hover{transform:translateY(-2px)}
    footer{margin-top:10px;padding:18px 0 28px;color:#26324e}
    .footer-wrap{background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow)}
    .footer-top{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:8px 12px;border-radius:999px;background:#f6f8ff;border:1px solid var(--line)}
    .social-box{display:grid;grid-template-columns:120px 1fr;gap:14px;align-items:center}
    .social-box img{width:120px;height:120px;object-fit:cover;border-radius:18px;border:1px solid var(--line)}
    .muted{color:var(--muted)}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .floating a,.floating button{width:52px;height:52px;border-radius:50%;border:none;display:grid;place-items:center;box-shadow:0 14px 30px rgba(18,28,52,.18);cursor:pointer;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff}
    .floating .small{background:#fff;color:var(--text);border:1px solid var(--line)}
    .anchor-pad{scroll-margin-top:90px}
    .fade-in{opacity:0;transform:translateY(18px);transition:.7s ease}
    .fade-in.show{opacity:1;transform:none}
    .mobile-panel{display:none}
    .service-net{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .info-card{padding:18px}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.price-grid,.review-grid,.article-grid,.case-grid,.faq-grid,.timeline,.service-net,.footer-top{grid-template-columns:1fr 1fr}
      .stats{grid-template-columns:repeat(2,1fr)}
      .review-grid,.article-grid,.case-grid,.faq-grid,.timeline,.service-net,.footer-top{grid-template-columns:1fr}
    }
    @media (max-width: 760px){
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .mobile-panel{display:none;padding:0 0 14px}
      .mobile-panel.show{display:block}
      .mobile-panel .nav-links{display:grid;grid-template-columns:1fr 1fr;display:grid}
      .hero-grid,.grid-3,.grid-2,.price-grid,.form-grid,.stats{grid-template-columns:1fr}
      .hero-main,.hero-side,.section-card,.form-card,.compare-card{padding:18px}
      .social-box{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:start}
    }