:root{--ink:#1f2a3a;--muted:#5b6778;--line:#e4e9f0;--bg:#fbfcfe;--card:#ffffff;--accent:#2d6cdf;--accent2:#ff8a5b;--soft:#eef4ff}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header.top{position:sticky;top:0;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line);z-index:10}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--ink)}
.brand img{width:34px;height:34px;border-radius:9px}
nav a{margin-left:22px;color:var(--ink);font-size:15px}nav a.on{color:var(--accent);font-weight:600}
@media(max-width:720px){header.top .wrap{height:auto;flex-wrap:wrap;padding:10px 20px}nav{width:100%;display:flex;flex-wrap:wrap;gap:6px 0;margin-top:6px}nav a{margin:0 16px 0 0;font-size:14px}}
.hero{padding:72px 0 56px;background:linear-gradient(180deg,#eef5ff 0%,#fbfcfe 100%)}
.hero h1{font-size:40px;line-height:1.25;margin:0 0 14px}.hero p.lead{font-size:19px;color:var(--muted);max-width:640px;margin:0 0 26px}
.btn{display:inline-block;padding:11px 20px;border-radius:10px;background:var(--accent);color:#fff;font-weight:600}
.btn.ghost{background:#fff;color:var(--accent);border:1px solid var(--accent);margin-left:10px}
.btn:hover{text-decoration:none;opacity:.92}
section{padding:52px 0}section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
h2{font-size:28px;margin:0 0 8px}h3{font-size:19px;margin:22px 0 8px}
.sub{color:var(--muted);margin:0 0 24px}
.grid{display:grid;gap:18px}.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:820px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}@media(max-width:560px){.g2,.g3,.g4{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px}
.card h3{margin-top:0}.card p{margin:6px 0 0;color:var(--muted)}
.stat{font-size:34px;font-weight:700;color:var(--accent);line-height:1.1}.stat small{display:block;font-size:14px;color:var(--muted);font-weight:400;margin-top:6px}
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}@media(max-width:820px){.split{grid-template-columns:1fr}}
.shot{width:100%;max-width:380px;border-radius:22px;box-shadow:0 18px 50px rgba(31,42,58,.18);display:block;margin:0 auto}
.img{width:100%;border-radius:14px;display:block}
table.info{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
table.info th,table.info td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
table.info th{width:180px;background:var(--soft);font-weight:600}table.info tr:last-child th,table.info tr:last-child td{border-bottom:0}
.timeline{list-style:none;padding:0;margin:0;border-left:2px solid var(--line)}
.timeline li{padding:0 0 18px 20px;position:relative}.timeline li::before{content:"";position:absolute;left:-7px;top:9px;width:12px;height:12px;border-radius:50%;background:var(--accent)}
.timeline b{display:block}.timeline span{color:var(--muted)}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:600}.faq p{margin:8px 0 0;color:var(--muted)}
.doc{max-width:820px}.doc h2{margin-top:36px;font-size:22px}.doc p,.doc li{color:#2b3644}.doc .meta{color:var(--muted);font-size:14px}
.note{background:var(--soft);border-radius:12px;padding:14px 18px;color:#2b3644}
.en{font-family:-apple-system,"Helvetica Neue",Arial,sans-serif}
footer{border-top:1px solid var(--line);padding:36px 0 44px;color:var(--muted);font-size:14px;background:#fff}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px}@media(max-width:720px){footer .cols{grid-template-columns:1fr}}
footer h4{margin:0 0 8px;color:var(--ink);font-size:15px}footer a{color:var(--muted);display:block}footer .copy{margin-top:26px;padding-top:16px;border-top:1px solid var(--line);font-size:13px}