:root{--bg:#f6f8fc;--card:#ffffff;--card2:#fdf7ef;--text:#1f2a37;--muted:#5b6574;--line:#e7ebf2;--brand:#2f6df6;--brand2:#15b8a6;--accent:#ff8b3d;--shadow:0 18px 40px rgba(31,42,55,.08);--radius:20px;--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:linear-gradient(180deg,#f8fbff 0%,#f6f8fc 38%,#f8fafc 100%);color:var(--text);line-height:1.65}
    a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input,select,textarea{font:inherit}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    .topbar,.site-header,.site-footer,.main{position:relative;z-index:1}
    .topbar{background:#eff6ff;border-bottom:1px solid var(--line);color:#28415f;font-size:14px}
    .topbar .container{display:flex;gap:12px;justify-content:space-between;align-items:center;padding:10px 0;flex-wrap:wrap}
    .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;border:1px solid var(--line)}
    .brand strong{font-size:18px}
    .site-header{background:rgba(255,255,255,.82);backdrop-filter:blur(12px);border-bottom:1px solid rgba(231,235,242,.8);position:sticky;top:0}
    .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}
    nav ul{list-style:none;display:flex;flex-wrap:wrap;gap:6px 14px;margin:0;padding:0;align-items:center}
    nav a{padding:8px 10px;border-radius:999px;color:#2b3645;font-size:14px}
    nav a:hover{background:#eef4ff;color:#1c4ed8}
    .cta{display:flex;gap:10px;align-items:center}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 16px;border-radius:14px;border:1px solid transparent;cursor:pointer;transition:.25s ease;box-shadow:none}
    .btn-primary{background:linear-gradient(135deg,var(--brand),#4f8cff);color:#fff;box-shadow:0 14px 30px rgba(47,109,246,.22)}
    .btn-secondary{background:#fff;border-color:var(--line);color:#243244}
    .btn:hover{transform:translateY(-2px)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
    .hero{padding:34px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:22px;align-items:stretch}
    .hero-panel{background:linear-gradient(135deg,#ffffff 0%,#f7fbff 50%,#fff7ee 100%);border:1px solid var(--line);border-radius:28px;padding:32px;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .hero-panel:before,.hero-panel:after{content:"";position:absolute;border-radius:50%;background:radial-gradient(circle,rgba(47,109,246,.14),transparent 60%);pointer-events:none}
    .hero-panel:before{width:240px;height:240px;right:-80px;top:-70px}.hero-panel:after{width:180px;height:180px;left:-50px;bottom:-60px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#edf6ff;color:#2154c8;font-weight:600;font-size:13px}
    h1{font-size:clamp(30px,4vw,54px);line-height:1.08;margin:16px 0 14px;letter-spacing:-.03em}
    .lead{color:var(--muted);font-size:18px;max-width:58ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:18px}
    .mini-stat{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px 16px}
    .mini-stat strong{display:block;font-size:20px}.mini-stat span{color:var(--muted);font-size:13px}
    .hero-side{display:grid;gap:16px}
    .side-card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:var(--shadow)}
    .side-card h3{margin:0 0 10px;font-size:18px}.side-card p,.side-card li{color:var(--muted)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#2d3b4d}
    section{padding:20px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:16px;flex-wrap:wrap}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);max-width:68ch}
    .grid-3,.grid-4{display:grid;gap:16px}
    .grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
    .card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:0 10px 24px rgba(31,42,55,.05);transition:.25s ease}
    .card:hover{transform:translateY(-4px);box-shadow:0 18px 34px rgba(31,42,55,.09)}
    .card h3,.card h4{margin:0 0 10px}.card p{margin:0;color:var(--muted)}
    .metric{font-size:30px;font-weight:800;color:#18356e}.metric small{display:block;font-size:13px;color:var(--muted);font-weight:500}
    .workflow,.timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{background:linear-gradient(180deg,#fff,#f8fbff);border:1px solid var(--line);border-radius:20px;padding:18px;position:relative}
    .step b{display:inline-flex;width:32px;height:32px;border-radius:10px;background:#eaf2ff;color:#1f4fd6;align-items:center;justify-content:center;margin-bottom:12px}
    .compare{overflow:auto;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:760px}th,td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
    th{background:#f7faff;color:#263245;font-weight:700}.rating{font-weight:800;color:#0f7b4a}
    .accordion{display:grid;gap:12px}.faq-item{border:1px solid var(--line);border-radius:18px;background:#fff;overflow:hidden}
    .faq-q{width:100%;text-align:left;background:transparent;border:0;padding:16px 18px;display:flex;justify-content:space-between;gap:12px;cursor:pointer;color:#213044;font-weight:700}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 18px;color:var(--muted)}
    .faq-item.open .faq-a{padding:0 18px 16px;max-height:180px}
    .reviews{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .review{background:linear-gradient(180deg,#fff,#fffaf4);border:1px solid var(--line);border-radius:22px;padding:18px}
    .review .name{font-weight:700;margin-top:12px}.review .role{color:var(--muted);font-size:13px}
    .gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.gallery img{border-radius:18px;border:1px solid var(--line);aspect-ratio:1.6/1;object-fit:cover;background:#fff}
    .article-list{display:grid;gap:12px}.article{display:flex;justify-content:space-between;gap:14px;padding:14px 16px;border:1px solid var(--line);border-radius:16px;background:#fff}
    .article span{color:var(--muted)}
    .form-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:16px;align-items:start}
    form{display:grid;gap:12px}.field{display:grid;gap:6px}.field input,.field select,.field textarea{width:100%;padding:12px 14px;border-radius:14px;border:1px solid #d8e1ee;background:#fff;color:#1f2a37}
    textarea{min-height:122px;resize:vertical}
    .contact-box{background:linear-gradient(180deg,#fff,#f7fbff);border:1px solid var(--line);border-radius:22px;padding:18px}
    .qrcode{display:flex;gap:16px;align-items:center;flex-wrap:wrap}.qrcode img{width:128px;height:128px;object-fit:cover;border-radius:18px;border:1px solid var(--line);background:#fff}
    .site-footer{margin-top:10px;padding:24px 0 28px;border-top:1px solid var(--line);background:#eef3f9;color:#213244}
    .footer-grid{display:grid;grid-template-columns:1.3fr .9fr 1fr;gap:16px}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}.footer-links a{color:#24456f}
    .floating{position:fixed;right:16px;bottom:16px;display:grid;gap:10px;z-index:30}
    .floating a,.floating button{width:50px;height:50px;border-radius:16px;border:1px solid var(--line);background:#fff;display:grid;place-items:center;box-shadow:var(--shadow);cursor:pointer}
    .floating a{color:#1c4ed8}.floating button{color:#213244}
    .scroll-reveal{opacity:0;transform:translateY(14px);transition:.6s ease}.scroll-reveal.show{opacity:1;transform:none}
    @media (max-width: 980px){.hero-grid,.grid-4,.grid-3,.reviews,.footer-grid,.form-grid,.workflow,.timeline{grid-template-columns:1fr 1fr}.hero-points{grid-template-columns:1fr}.nav-wrap{align-items:center}.menu-toggle{display:inline-flex}.desktop-nav{display:none;width:100%}.desktop-nav.open{display:block}.nav-wrap{flex-wrap:wrap}.desktop-nav ul{padding:12px 0 0}.hero{padding-top:20px}}
    @media (max-width: 640px){.container{width:min(var(--container),calc(100% - 24px))}.hero-panel{padding:22px}.hero-grid,.grid-4,.grid-3,.reviews,.footer-grid,.form-grid,.workflow,.timeline{grid-template-columns:1fr}.lead{font-size:16px}h1{font-size:clamp(28px,9vw,38px)}.section-head h2{font-size:23px}}