:root{--brand: #1a3668;--brand-2: #2b5aa8;--accent: #f9a845;--text: #16181d;--muted: #5b6270;--bg: #ffffff;--soft: #f3f5f9;--line: #e2e6ee;--answer: #eef3fb;--radius: 14px;color-scheme:light dark}@media(prefers-color-scheme:dark){:root{--text: #eef0f4;--muted: #a3a9b6;--bg: #0f1218;--soft: #1a1f29;--line: #2a3140;--answer: #172235;--brand: #8fb0ea;--brand-2: #6d93d8}}*{box-sizing:border-box}body{margin:0;font:17px/1.6 -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:var(--text);background:var(--bg)}a{color:var(--brand)}img,picture{max-width:100%;height:auto}header.site{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px;padding:10px max(16px,calc((100% - 1040px)/2))}header.site 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