:root{color-scheme:light;--ink:#17222a;--muted:#586772;--paper:#f5f8fa;--card:#fff;--line:#dce5ea;--accent:#1769e0;--deep:#0a315f}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.68 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.wrap{width:min(850px,calc(100% - 32px));margin:auto}main{padding:42px 0 24px}.card{padding:clamp(24px,5vw,44px);border:1px solid var(--line);border-radius:20px;background:var(--card)}h1,h2{color:var(--deep);line-height:1.2}h1{margin-top:0;font-size:clamp(2.2rem,7vw,3.5rem);letter-spacing:-.035em}h2{margin-top:2rem;font-size:1.35rem}p,li{color:var(--muted)}a{color:var(--accent);font-weight:700}.meta{padding:14px 18px;background:#edf4ff;border-radius:12px}nav{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:28px}footer{padding:0 0 42px;color:var(--muted);font-size:.92rem}@media(max-width:560px){main{padding-top:20px}.card{border-radius:15px}}