:root{color-scheme:dark;--bg:#07101f;--panel:#0d1a2e;--line:#213653;--text:#f5f8ff;--muted:#a7b7cf;--accent:#34b7f1;--accent2:#7ed7ff}
*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 80% 0,#102d59 0,transparent 36%),var(--bg);color:var(--text);font:16px/1.75 system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif}
a{color:var(--accent2);text-underline-offset:3px}.site-header{position:sticky;top:0;z-index:10;display:flex;justify-content:space-between;align-items:center;gap:24px;padding:16px max(24px,calc((100vw - 1040px)/2));background:rgba(7,16,31,.9);border-bottom:1px solid var(--line);backdrop-filter:blur(16px)}
.brand{font-weight:800;color:#fff;text-decoration:none}.site-header nav{display:flex;gap:18px;flex-wrap:wrap}.site-header nav a{color:var(--muted);text-decoration:none;font-size:14px}.site-header nav a:hover{color:#fff}
main{width:min(920px,calc(100% - 32px));margin:0 auto;padding:64px 0 84px}article>h1,.hero h1{font-size:clamp(34px,6vw,58px);line-height:1.16;margin:.2em 0 .35em;letter-spacing:-.04em}.lead{font-size:clamp(18px,2.4vw,22px);color:#c7d5e8;max-width:760px}.eyebrow{color:var(--accent);font-size:13px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
section{margin-top:48px}h2{font-size:26px;line-height:1.3;margin-bottom:16px}p,li{color:#c7d5e8}li+li{margin-top:8px}.notice{margin:32px 0;padding:18px 20px;border:1px solid #2b6b91;border-radius:16px;background:#0a2840;color:#d8f3ff}
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.card{padding:24px;border:1px solid var(--line);border-radius:20px;background:linear-gradient(145deg,rgba(21,43,74,.86),rgba(10,24,43,.9));box-shadow:0 20px 60px rgba(0,0,0,.18)}.card h2{font-size:22px;margin:.25em 0}.card h2 a{color:#fff;text-decoration:none}.read-more{display:inline-block;margin-top:8px;font-weight:700}.principles{padding:8px 24px 24px;border-left:3px solid var(--accent)}
details{border-top:1px solid var(--line);padding:16px 0}summary{cursor:pointer;font-weight:700}details p{margin-bottom:0}.back{margin-top:48px}footer{border-top:1px solid var(--line);padding:30px max(24px,calc((100vw - 920px)/2));font-size:13px}footer p{margin:4px 0;color:#8294ae}
@media(max-width:720px){.site-header{align-items:flex-start;flex-direction:column;padding:14px 16px}.site-header nav{gap:10px 14px}.grid{grid-template-columns:1fr}main{padding-top:42px}}