:root{color-scheme:light;--ink:#102b34;--muted:#637981;--line:#dbe7e9;--teal:#087f83;--deep:#0c4f5b;--soft:#edf7f7;--paper:#fff}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:linear-gradient(145deg,#edf7f7 0,#f8fbfc 48%,#eef2f8 100%);line-height:1.75}a{color:inherit}.shell{width:min(1040px,calc(100% - 32px));margin:auto}.topbar{display:flex;justify-content:space-between;align-items:center;padding:24px 0}.brand{font-weight:800;letter-spacing:.04em}.nav{display:flex;gap:20px;color:var(--muted);font-size:14px}.nav a{text-decoration:none}.hero{margin:20px 0 28px;padding:68px clamp(28px,7vw,76px);border-radius:34px;color:#fff;background:radial-gradient(circle at 86% 10%,rgba(88,211,204,.45),transparent 34%),linear-gradient(135deg,var(--deep),var(--teal));box-shadow:0 24px 60px rgba(9,77,88,.2)}.eyebrow{font-size:12px;letter-spacing:.18em;opacity:.78}.hero h1{margin:12px 0;font-size:clamp(34px,6vw,64px);line-height:1.15}.hero p{max-width:620px;margin:0;opacity:.86}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card,.article{background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:24px;box-shadow:0 12px 34px rgba(27,67,74,.08)}.card{padding:26px}.card h2{margin:6px 0;font-size:19px}.card p{margin:0;color:var(--muted);font-size:14px}.article{max-width:860px;margin:28px auto;padding:clamp(28px,6vw,60px)}.article h1{line-height:1.25}.article h2{margin-top:32px;font-size:20px}.article p,.article li{color:#425c64}.notice{padding:14px 16px;border-radius:14px;background:var(--soft);color:var(--deep);font-size:14px}.footer{padding:42px 0;color:var(--muted);font-size:13px;text-align:center}@media(max-width:720px){.nav{gap:10px;font-size:12px}.hero{padding:48px 28px;border-radius:26px}.grid{grid-template-columns:1fr}.article{border-radius:20px}}