:root{--bg:#f7f8fb;--card:#fff;--text:#202534;--muted:#667085;--line:#e7eaf0;--brand:#2f67ff;--brand2:#0f3fc9;--soft:#eef3ff}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.75}.wrap{width:min(1120px,92vw);margin:0 auto}.topbar{background:#0f172a;color:#dbe4ff;font-size:14px;padding:8px 0}.header{background:rgba(255,255,255,.92);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;backdrop-filter:saturate(180%) blur(10px)}.nav{display:flex;align-items:center;justify-content:space-between;padding:16px 0}.logo{font-weight:800;color:var(--brand);text-decoration:none;font-size:21px}.logo span{color:#111827}.menu{display:flex;gap:18px;flex-wrap:wrap}.menu a{color:#293044;text-decoration:none;font-weight:600;font-size:15px}.menu a:hover{color:var(--brand)}.hero{padding:58px 0 36px;background:linear-gradient(135deg,#eef3ff 0%,#ffffff 55%,#f4f7fb 100%);border-bottom:1px solid var(--line)}.hero h1{font-size:clamp(30px,4vw,46px);line-height:1.25;margin:0 0 16px}.hero p{font-size:18px;color:var(--muted);max-width:830px;margin:0 0 22px}.btns{display:flex;gap:12px;flex-wrap:wrap}.btn{display:inline-block;padding:12px 18px;border-radius:12px;text-decoration:none;font-weight:700}.primary{background:var(--brand);color:white}.secondary{background:white;color:var(--brand);border:1px solid var(--line)}main{padding:36px 0}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 10px 25px rgba(15,23,42,.04)}.card h2,.card h3{margin-top:0}.content{background:white;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:0 8px 22px rgba(15,23,42,.035)}.content h2{font-size:26px;margin:28px 0 10px}.content h3{font-size:21px;margin:22px 0 8px}.content p{margin:0 0 14px}.content ul{padding-left:22px}.note{background:var(--soft);border-left:4px solid var(--brand);padding:14px 16px;border-radius:12px;color:#34405c}.crumb{color:var(--muted);font-size:14px;margin-bottom:16px}.crumb a{color:var(--brand);text-decoration:none}.links{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.links a{background:#f3f6ff;border:1px solid #dce5ff;color:var(--brand2);padding:8px 12px;border-radius:999px;text-decoration:none;font-weight:650;font-size:14px}.footer{background:#111827;color:#cbd5e1;margin-top:34px;padding:28px 0}.footer a{color:#dbeafe;text-decoration:none}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:20px}.faq-item{border-bottom:1px solid var(--line);padding:16px 0}.faq-item:last-child{border-bottom:0}.small{font-size:14px;color:var(--muted)}@media(max-width:780px){.grid,.footer-grid{grid-template-columns:1fr}.nav{align-items:flex-start;gap:12px;flex-direction:column}.hero{padding:38px 0 26px}.content{padding:20px}}