:root{color-scheme:light dark;--paper:#f5f6f2;--card:#fff;--ink:#152a22;--muted:#53635b;--accent:#2e5e4a;--line:#dae1db;--soft:#e8f0e8}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.7 -apple-system,BlinkMacSystemFont,"Noto Sans TC",sans-serif}a{color:var(--accent);text-underline-offset:4px}header,footer{max-width:1060px;margin:auto;padding:24px;display:flex;align-items:center;justify-content:space-between;gap:20px}header nav{display:flex;gap:24px}.brand{font-size:22px;font-weight:750;display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink)}.brand img{width:42px;height:42px}main{max-width:920px;margin:32px auto 64px;padding:0 24px}.eyebrow{font-size:12px;letter-spacing:.12em;font-weight:750;color:var(--accent)}h1{font-size:clamp(38px,6vw,64px);line-height:1.22;letter-spacing:-.04em;margin:18px 0 24px}h2{font-size:23px;line-height:1.4;margin:8px 0 14px}.lead{font-size:20px;color:var(--muted);margin-bottom:36px}.card{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:28px;margin:24px 0}.button{display:inline-block;background:var(--accent);color:#fff;border-radius:14px;padding:14px 22px;text-decoration:none;font-weight:650}.secondary{background:var(--soft);color:var(--accent)}.small{font-size:14px;color:var(--muted)}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin:40px 0}.features h2{font-size:19px}.features p{font-size:15px;color:var(--muted)}footer{border-top:1px solid var(--line);font-size:13px;color:var(--muted)}.prose{max-width:760px}.prose h1{font-size:40px}.prose h2{margin-top:32px}a:focus-visible{outline:3px solid #a0b57b;outline-offset:5px}[hidden]{display:none!important}@media(max-width:600px){header,footer{padding:20px;flex-wrap:wrap}main{margin-top:24px;padding:0 20px}.card{padding:22px}.features{grid-template-columns:1fr;gap:12px}.lead{font-size:18px}}@media(prefers-color-scheme:dark){:root{--paper:#121b16;--card:#1c2921;--ink:#f1f4ee;--muted:#bbc7bd;--accent:#b9d69e;--line:#37483b;--soft:#2a3c2d}.button{background:#b9d69e;color:#152a22}.secondary{background:var(--soft);color:var(--accent)}}