:root{--brand:#176b87;--soft:#edf5f6;--ink:#17211e;--muted:#65716c;--line:#dfe6e2;--paper:#fbfaf6}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--paper);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif}
a{color:inherit;text-decoration:none}
.shell{width:min(1120px,calc(100% - 40px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:10;border-bottom:1px solid rgba(23,33,30,.08);background:rgba(251,250,246,.92);backdrop-filter:blur(16px)}
.nav{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800}
.brand-mark{display:grid;width:38px;height:38px;place-items:center;border-radius:50%;background:var(--brand);color:#fff;font-size:13px}
.nav-links{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:12px 24px;color:var(--muted);font-size:14px}
.nav-links a:hover{color:var(--brand)}
.hero{padding:104px 0 88px;background:radial-gradient(circle at 80% 0,var(--soft),transparent 38%)}
.eyebrow{margin:0 0 18px;color:var(--brand);font-size:14px;font-weight:800;letter-spacing:.08em}
h1{max-width:920px;margin:0;font-size:clamp(42px,7vw,76px);line-height:1.12;letter-spacing:-.04em}
.lead{max-width:820px;margin:28px 0 0;color:#48534f;font-size:20px;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.button{display:inline-flex;min-height:46px;align-items:center;padding:0 20px;border:1px solid var(--line);border-radius:999px;font-weight:800}
.button-primary{border-color:var(--brand);background:var(--brand);color:#fff}
.button-secondary:hover{border-color:var(--brand);color:var(--brand)}
.section{padding:82px 0;border-top:1px solid var(--line)}
.section-head{display:grid;grid-template-columns:minmax(240px,.7fr) minmax(0,1.3fr);gap:56px;margin-bottom:40px}
.section-head h2{margin:0;font-size:clamp(30px,4vw,48px);line-height:1.25}
.section-head p{margin:0;color:var(--muted);font-size:17px;line-height:1.9}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.card{min-height:230px;padding:28px;border:1px solid var(--line);border-radius:20px;background:#fff}
.card span{color:var(--brand);font-size:13px;font-weight:800}
.card h2{margin:52px 0 12px;font-size:23px}
.card p{margin:0;color:var(--muted);line-height:1.85}
.scenario-list{display:flex;flex-wrap:wrap;gap:12px}
.scenario-list li{list-style:none;padding:13px 18px;border:1px solid var(--line);border-radius:999px;background:#fff}
.faq{display:grid;gap:12px}
.faq article{padding:24px 0;border-bottom:1px solid var(--line)}
.faq h3{margin:0 0 10px;font-size:19px}
.faq p{margin:0;color:var(--muted);line-height:1.85}
.notice{margin-top:36px;padding:20px 24px;border-left:4px solid var(--brand);background:var(--soft);color:#3e4b46;line-height:1.85}
.related{display:flex;flex-wrap:wrap;gap:10px 24px;color:var(--brand);font-weight:800}
.contact{padding:68px 0;background:var(--brand);color:#fff}
.contact-grid{display:flex;align-items:center;justify-content:space-between;gap:30px}
.contact h2{margin:0;font-size:clamp(30px,4vw,48px)}
.contact p{max-width:650px;margin:14px 0 0;color:rgba(255,255,255,.78);line-height:1.8}
.contact a{display:inline-flex;min-height:46px;align-items:center;padding:0 20px;border:1px solid rgba(255,255,255,.38);border-radius:999px;font-weight:800}
footer{padding:30px 0;color:var(--muted);font-size:13px}
.footer-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px}
.records{display:flex;flex-wrap:wrap;gap:12px 20px}
@media(max-width:760px){.shell{width:min(100% - 28px,1120px)}.nav{align-items:flex-start;padding:14px 0}.nav-links{gap:8px 14px}.hero{padding:70px 0 58px}.lead{font-size:17px}.section{padding:58px 0}.section-head,.card-grid{grid-template-columns:1fr;gap:20px}.card{min-height:auto}.card h2{margin-top:28px}.contact-grid{align-items:flex-start;flex-direction:column}}