:root{color-scheme:dark;--bg:#101912;--card:#19271d;--text:#e4ebdc;--muted:#a9baa5;--line:#364b3b;--accent:#c9dfaf}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.85 system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif}a{color:var(--accent);text-underline-offset:4px}header{max-width:1100px;margin:auto;padding:22px 28px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px}header>a{font-size:23px;font-weight:700;text-decoration:none}nav{display:flex;gap:20px;flex-wrap:wrap}nav a{font-size:14px}main{max-width:1000px;margin:auto;padding:45px 28px 64px}article{max-width:800px;margin:auto}h1{font-size:clamp(27px,4vw,42px);line-height:1.35;letter-spacing:-.5px;margin:12px 0 20px}h2{font-size:22px;line-height:1.5;margin:34px 0 14px}p{margin:14px 0;overflow-wrap:anywhere}.eyebrow{font-size:11px;letter-spacing:2px;color:var(--accent)}.lead{font-size:18px;color:#c0cfb8}.meta{color:var(--muted);font-size:12px}.toc{display:grid;gap:8px;border:1px solid var(--line);background:var(--card);border-radius:15px;padding:20px 24px;margin:26px 0}.toc a{text-decoration:none;font-size:14px}.cards{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:34px}.card{display:block;text-decoration:none;padding:24px;background:var(--card);border:1px solid var(--line);border-radius:16px;transition:border-color .2s}.card:hover{border-color:var(--accent)}.card:focus-visible,.button:focus-visible{outline:3px solid #e0f7b6;outline-offset:4px}.card span{font-size:12px;color:var(--muted)}.card h2{margin:12px 0;font-size:21px;color:var(--text)}.card p{font-size:14px;color:var(--muted)}.card b{font-size:13px}.related{display:grid;gap:12px;font-size:14px}.notice{border-left:3px solid var(--accent);padding:12px 18px;background:var(--card);font-size:13px;color:var(--muted);margin:30px 0}.button{display:inline-block;background:var(--accent);color:var(--bg);padding:12px 20px;text-decoration:none;border-radius:10px;font-size:14px;font-weight:600}details{border-bottom:1px solid var(--line);padding:12px 0}summary{cursor:pointer;font-weight:600}details p{color:var(--muted);font-size:14px}footer{border-top:1px solid var(--line);padding:24px 20px;text-align:center;font-size:12px;color:var(--muted)}section{scroll-margin-top:20px}@media(max-width:640px){header{padding:15px 18px}header>a{font-size:21px}header nav{gap:14px}main{padding:28px 18px 40px}.cards{grid-template-columns:1fr;gap:14px}.card{padding:20px}h2{font-size:20px}.lead{font-size:16px}body{font-size:15px}.toc{padding:16px}.button{width:100%;text-align:center}footer{font-size:11px}}