:root{--bg:#f5f5f0;--paper:#fff;--ink:#1c211d;--muted:#6d756e;--line:#dfe3dd;--accent:#1d6b50}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}.topbar{position:sticky;top:0;z-index:10;height:68px;padding:0 28px;display:flex;align-items:center;justify-content:space-between;background:rgba(245,245,240,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.brand{display:flex;align-items:center;gap:11px}.mark{width:34px;height:34px;display:grid;place-items:center;background:var(--accent);color:#fff;border-radius:9px;font:600 12px ui-monospace,Menlo,monospace;letter-spacing:-.04em}.brand strong{display:block;font-size:14px;line-height:1.3}.brand small{display:block;color:var(--muted);font-size:11px;line-height:1.4}.top-right{display:flex;align-items:center;gap:18px}.stage{font-size:12px;color:var(--accent);border:1px solid var(--accent);border-radius:999px;padding:4px 11px;white-space:nowrap}.nav{display:flex;gap:4px}.nav a{font-size:13px;color:var(--muted);padding:6px 10px;border-radius:7px}.nav a:hover,.nav a.active{background:#e7f0ea;color:var(--accent)}
.page{max-width:920px;margin:0 auto;padding:64px 26px 100px}.document{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:52px 62px 62px;box-shadow:0 16px 45px rgba(30,50,38,.06)}.eyebrow{font:500 11px ui-monospace,Menlo,monospace;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.document h1{font-family:"Songti SC","Noto Serif SC",STSong,serif;font-size:clamp(32px,5vw,48px);line-height:1.2;letter-spacing:-.04em;margin:0 0 30px;padding-bottom:26px;border-bottom:1px solid var(--line)}
.document h2{font-family:"Songti SC","Noto Serif SC",STSong,serif;font-size:24px;line-height:1.35;margin:44px 0 14px;padding-top:8px;border-top:1px solid var(--line)}.document h3{font-size:18px;margin:28px 0 8px}.document p{margin:12px 0}.document ul,.document ol{padding-left:24px;margin:12px 0}.document li{margin:6px 0}.document strong{font-weight:700}
.document table{width:100%;border-collapse:collapse;margin:22px 0;font-size:14px;background:var(--paper);border:1px solid var(--line);border-radius:10px;overflow:hidden}.document th{background:#eef3ef;text-align:left;font-weight:600}.document th,.document td{border-bottom:1px solid var(--line);padding:11px 13px;vertical-align:top}.document tr:last-child td{border-bottom:0}.document code{font:12px ui-monospace,Menlo,monospace;background:#eef3ef;padding:2px 5px;border-radius:4px}
.hero{padding:30px 0 42px}.hero h1{font-family:"Songti SC","Noto Serif SC",STSong,serif;font-size:clamp(40px,7vw,68px);line-height:1.08;letter-spacing:-.05em;margin:14px 0 18px}.hero p{color:var(--muted);margin:0}.card-list{display:grid;gap:12px}.card{position:relative;display:flex;align-items:center;gap:16px;background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:24px 26px;transition:.2s}.card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 12px 30px rgba(30,50,38,.07)}.card .num{font:11px ui-monospace,Menlo,monospace;color:var(--accent)}.card .title{font-size:17px;font-weight:600}.card .arrow{margin-left:auto;color:var(--accent)}
.footer{text-align:center;color:var(--muted);font-size:12px;padding:0 24px 40px}
@media(max-width:700px){.topbar{height:auto;min-height:64px;padding:10px 16px;gap:10px}.top-right{gap:8px}.stage{font-size:11px;padding:3px 8px}.nav{display:none}.page{padding:30px 14px 70px}.document{padding:30px 22px 40px;border-radius:14px}.document h1{font-size:32px}.document h2{font-size:21px;margin-top:36px}.document table{display:block;overflow-x:auto;white-space:nowrap}}