:root{--bg:#f7f9fc;--card:#ffffff;--text:#1f2937;--muted:#5b6574;--brand:#2457c5;--brand-dark:#173b8c;--line:#e5e7eb;--soft:#eef4ff}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.8}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}.topbar{background:#0f172a;color:#fff;padding:10px 20px;font-size:14px}.container{max-width:1120px;margin:0 auto;padding:0 20px}.header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:18px 0}.brand{font-weight:800;font-size:21px;color:#111827}.menu{display:flex;gap:18px;flex-wrap:wrap}.menu a{color:#374151;font-weight:600}.hero{padding:58px 0;background:linear-gradient(135deg,#eef4ff 0%,#ffffff 62%)}.hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);gap:32px;align-items:center}.badge{display:inline-block;background:#dbeafe;color:#1d4ed8;border-radius:999px;padding:6px 12px;font-weight:700;font-size:14px}.hero h1{font-size:42px;line-height:1.25;margin:16px 0}.lead{font-size:18px;color:var(--muted)}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 12px 32px rgba(15,23,42,.06)}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.section{padding:42px 0}.section h2{font-size:30px;margin:0 0 14px}.section h3{font-size:22px;margin:22px 0 10px}.muted{color:var(--muted)}.cta{background:var(--brand);color:#fff;border-radius:16px;padding:28px;margin-top:20px}.cta a{color:#fff;font-weight:800}.breadcrumb{font-size:14px;color:var(--muted);padding:18px 0}.article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:32px}.article h1{font-size:36px;line-height:1.3}.article h2{font-size:28px;border-top:1px solid var(--line);padding-top:24px;margin-top:32px}.article h3{font-size:21px}.list{padding-left:20px}.faq-item{border-bottom:1px solid var(--line);padding:18px 0}.footer{margin-top:40px;background:#111827;color:#d1d5db;padding:34px 0}.footer a{color:#e5e7eb}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}.note{background:#fff7ed;border:1px solid #fed7aa;border-radius:14px;padding:16px;color:#7c2d12}@media(max-width:760px){.hero-grid,.grid,.footer-grid{grid-template-columns:1fr}.hero h1{font-size:32px}.nav{align-items:flex-start;flex-direction:column}.article{padding:22px}}