:root{--bg:#f6f8fc;--card:#ffffff;--card2:#f9fbff;--text:#172033;--muted:#5f6b85;--line:#dbe4f3;--brand:#1e67ff;--brand2:#12b5c9;--brand3:#7c4dff;--shadow:0 18px 50px rgba(23,32,51,.08);--radius:22px;--container:1180px}
    *{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:radial-gradient(circle at top left,#edf5ff 0,#f6f8fc 35%,#f8fbff 100%);color:var(--text)}
    a{text-decoration:none;color:inherit} 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(246,248,252,.82);backdrop-filter:blur(14px);border-bottom:1px solid rgba(219,228,243,.75)}
    .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:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;border:1px solid var(--line)} .brand strong{display:block;font-size:16px}.brand span{display:block;font-size:12px;color:var(--muted)}
    .nav-links{display:flex;flex-wrap:wrap;gap:10px;justify-content:flex-end;align-items:center}.nav-links a{font-size:14px;color:#24304a;padding:9px 12px;border-radius:999px;transition:.2s ease}.nav-links a:hover,.nav-links a.active{background:#eaf1ff;color:#0d3fb3}
    .nav-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;font-weight:700;cursor:pointer;transition:.22s ease;box-shadow:none}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand3));color:#fff;box-shadow:0 12px 25px rgba(30,103,255,.22)} .btn-primary:hover{transform:translateY(-2px)} .btn-ghost{background:#fff;border-color:var(--line);color:#21304e}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px}
    main{padding:22px 0 8px}
    section{padding:28px 0}
    .hero{padding-top:18px}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:24px;align-items:stretch}
    .hero-card{background:linear-gradient(180deg,#ffffff 0%,#f6f9ff 100%);border:1px solid rgba(219,228,243,.95);border-radius:28px;box-shadow:var(--shadow);padding:28px;position:relative;overflow:hidden}
    .hero-card:before,.hero-card:after{content:"";position:absolute;border-radius:999px;filter:blur(10px);opacity:.8}
    .hero-card:before{width:220px;height:220px;right:-100px;top:-60px;background:radial-gradient(circle,rgba(30,103,255,.18),transparent 70%)}
    .hero-card:after{width:160px;height:160px;left:-60px;bottom:-70px;background:radial-gradient(circle,rgba(18,181,201,.18),transparent 70%)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#eaf2ff;color:#0d3fb3;font-weight:700;font-size:13px}
    h1{margin:16px 0 14px;font-size:clamp(30px,4.3vw,54px);line-height:1.08;letter-spacing:-.03em}
    .lead{font-size:16px;line-height:1.9;color:var(--muted);max-width:760px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .hero-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
    .meta-box{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px;min-height:100px}.meta-box b{display:block;font-size:18px;margin-bottom:6px}.meta-box span{color:var(--muted);font-size:13px;line-height:1.6}
    .side-card{display:flex;flex-direction:column;gap:14px}.side-panel{background:linear-gradient(160deg,#0e1d47,#1b3b8a 55%,#2659f2);color:#fff;border-radius:28px;padding:24px;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .side-panel h2,.side-panel p,.side-panel li{color:#fff}.side-panel ul{margin:14px 0 0;padding-left:18px;line-height:1.8}.side-panel .small{color:rgba(255,255,255,.8)}
    .badge-row{display:flex;flex-wrap:wrap;gap:10px}.badge{padding:8px 10px;border-radius:999px;background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.12);font-size:12px}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:18px}.section-head h2{margin:0;font-size:clamp(24px,2.3vw,34px)} .section-head p{margin:0;color:var(--muted);max-width:760px;line-height:1.8}
    .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}
    .card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:0 10px 30px rgba(20,35,60,.05);transition:.22s ease}.card:hover{transform:translateY(-4px);box-shadow:0 18px 42px rgba(20,35,60,.09)}
    .metric{font-size:30px;font-weight:800;color:#0d3fb3;margin-bottom:8px} .card h3{margin:0 0 10px;font-size:18px} .card p,.card li{margin:0;color:var(--muted);line-height:1.8}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}.tag-cloud span{padding:10px 14px;background:#fff;border:1px solid var(--line);border-radius:999px;color:#24304a;font-size:13px}
    .table-wrap{overflow:auto;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:860px} th,td{padding:16px 14px;border-bottom:1px solid #edf2fa;text-align:left;vertical-align:top} th{background:#f5f8ff;color:#203055;font-size:14px} td{color:#4d5b78}
    .rating{display:flex;align-items:center;gap:8px;color:#0d3fb3;font-weight:800}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.step{position:relative}.step:before{content:"";position:absolute;left:18px;top:22px;bottom:-12px;width:2px;background:linear-gradient(180deg,#cfe0ff,transparent)}.step:last-child:before{display:none}
    .step-num{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-weight:800;margin-bottom:10px}
    .case-card{display:flex;flex-direction:column;gap:12px}.case-top{display:flex;justify-content:space-between;gap:10px;align-items:start}.case-top .label{padding:6px 10px;background:#edf4ff;color:#0d3fb3;border-radius:999px;font-size:12px;font-weight:700}
    .review{display:flex;flex-direction:column;gap:12px}.stars{color:#f6a700;font-size:16px;letter-spacing:2px}.review .who{display:flex;justify-content:space-between;gap:10px;align-items:center;color:#203055;font-weight:700}
    .accordion{display:grid;gap:12px}.qa{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden}.qa button{width:100%;padding:16px 18px;background:none;border:0;text-align:left;font-size:16px;font-weight:700;color:#1f2d49;display:flex;justify-content:space-between;gap:16px;align-items:center;cursor:pointer}.qa .ans{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 18px;color:var(--muted);line-height:1.8}.qa.open .ans{max-height:180px;padding-bottom:16px}
    .article-list{display:grid;gap:12px}.article-item{display:flex;justify-content:space-between;gap:14px;align-items:center;padding:16px 18px;border-radius:18px;background:#fff;border:1px solid var(--line)}.article-item span{color:var(--muted);font-size:13px}
    .form{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.field{display:flex;flex-direction:column;gap:8px}.field.full{grid-column:1/-1}.field label{font-size:14px;font-weight:700;color:#24304a} input,select,textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:var(--text)} textarea{min-height:118px;resize:vertical}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}.footer{background:#f4f7fd;border-top:1px solid var(--line);padding:28px 0 34px;color:#22304d}.footer a{color:#1346b7}.fine{font-size:13px;color:var(--muted);line-height:1.8}
    .float-tools{position:fixed;right:16px;bottom:16px;z-index:60;display:flex;flex-direction:column;gap:10px}.float-tools a,.float-tools button{width:48px;height:48px;border-radius:16px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow);display:grid;place-items:center;color:#173055;cursor:pointer}
    .scroll-reveal{opacity:0;transform:translateY(18px);transition:.6s ease}.scroll-reveal.show{opacity:1;transform:none}
    .mobile-only{display:none}
    @media (max-width: 1024px){.hero-grid,.grid-4,.grid-3,.timeline,.footer-grid{grid-template-columns:1fr 1fr}.hero-meta{grid-template-columns:1fr}.nav-links{display:none}.menu-btn{display:inline-flex}.nav.open .nav-links{display:flex;position:absolute;left:16px;right:16px;top:68px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:12px;box-shadow:var(--shadow)}}
    @media (max-width: 760px){.hero-grid,.grid-4,.grid-3,.grid-2,.timeline,.footer-grid,.form{grid-template-columns:1fr}.nav{position:relative}.hero-card,.side-panel{padding:20px}.section-head{flex-direction:column;align-items:start}.nav-cta .btn-ghost{display:none}.mobile-only{display:inline-flex}.article-item{flex-direction:column;align-items:start}.table-wrap{border-radius:18px}.float-tools{right:12px;bottom:12px}}