:root{color-scheme:light;--ink:#172d3d;--muted:#526575;--paper:#f5f5ef;--line:#d7dfdc;--accent:#267166}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.85 system-ui,-apple-system,"Segoe UI","Microsoft JhengHei",sans-serif}header,main,footer{max-width:1000px;margin:auto;padding:28px 32px}header{display:flex;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line);align-items:center}header a{font-size:15px}nav{display:flex;gap:22px;flex-wrap:wrap}a{color:var(--accent);text-underline-offset:5px}a:hover{color:var(--ink)}.brand{font-weight:700;color:var(--ink);text-decoration:none}.eyebrow{font-size:13px;letter-spacing:.12em;color:var(--accent);font-weight:700;margin-top:24px}h1{font-size:clamp(30px,5vw,48px);line-height:1.35;letter-spacing:-.02em;margin:18px 0 24px}h2{font-size:24px;line-height:1.5;margin:36px 0 12px}p{max-width:770px}main{padding-top:44px;padding-bottom:68px}.intro{font-size:21px;color:var(--muted);max-width:780px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:38px 0}.card{border-top:3px solid var(--accent);padding:16px 18px;background:#fff}.card h2{font-size:21px;margin:4px 0 12px}.card p{margin:0;color:var(--muted);font-size:16px}.note{border-left:3px solid var(--accent);padding:12px 22px;background:#eaf0eb;margin:32px 0}.meta,footer{font-size:14px;color:var(--muted)}footer{border-top:1px solid var(--line);padding-bottom:38px}li{margin:8px 0}ul{padding-left:25px}a:focus-visible{outline:3px solid #267166;outline-offset:5px}@media(max-width:700px){header{align-items:flex-start;flex-direction:column}header,main,footer{padding-left:22px;padding-right:22px}.cards{grid-template-columns:1fr}main{padding-top:26px}}