:root{color-scheme:light;--ink:#172b35;--muted:#51656e;--line:#d6e1df;--brand:#0b635e}*{box-sizing:border-box}body{margin:0;background:#f7faf9;color:var(--ink);font:16px/1.8 system-ui,-apple-system,"Microsoft YaHei",sans-serif}a{color:var(--brand);text-underline-offset:4px}header,main,footer{max-width:920px;margin:auto;padding:20px 24px}header{display:flex;justify-content:space-between;align-items:center;gap:20px;border-bottom:1px solid var(--line)}.brand{font-size:24px;font-weight:750;text-decoration:none}main{min-height:60vh}h1{font-size:clamp(27px,5vw,38px);line-height:1.35;margin:12px 0 20px}h2{font-size:21px;line-height:1.5;margin:0 0 12px}p{margin:0 0 16px}.tag{color:var(--muted);font-size:14px;margin:0 0 8px}.intro{padding:30px 0}.button,.episode{display:inline-block;border:1px solid var(--brand);border-radius:8px;padding:10px 16px;text-decoration:none}.button{background:var(--brand);color:white}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(260px,100%),1fr));gap:18px}.card,.answer{background:white;border:1px solid var(--line);border-radius:12px;padding:22px}.card h2 a{text-decoration:none}.text-link{font-weight:650}.answer{border-left:4px solid var(--brand)}section{margin:26px 0}.episodes{display:grid;grid-template-columns:repeat(auto-fill,minmax(90px,1fr));gap:10px}.episode{text-align:center;padding:9px 6px;background:white;overflow-wrap:anywhere}.back{display:inline-block;margin-bottom:18px}dl{display:grid;grid-template-columns:70px 1fr;gap:6px 12px}dt{color:var(--muted)}dd{margin:0;overflow-wrap:anywhere}.source,footer{font-size:14px;color:var(--muted)}footer{border-top:1px solid var(--line)}footer p{margin-bottom:6px}a:focus-visible{outline:3px solid #d48b28;outline-offset:4px}@media(max-width:480px){header,main,footer{padding-left:18px;padding-right:18px}.card,.answer{padding:18px}.intro{padding:16px 0}}