:root{--paper:#fafaf7;--ink:#20251f;--muted:#73786d;--line:#d5d9ce;--accent:#bd632b;--soft:#f3ebe3;--bg:#eaede6;--body:#525b4e}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit}
header{position:sticky;top:0;z-index:10;height:58px;display:flex;justify-content:space-between;align-items:center;padding:0 28px;border-bottom:1px solid var(--line);background:var(--paper)}
header .brand{display:flex;align-items:baseline;gap:20px;text-decoration:none}
header b{font-size:25px;letter-spacing:-1px;font-weight:700}
header .brand span{font-size:12px;color:var(--muted)}
nav{display:flex;gap:10px}
nav a,.btn{font-size:12px;padding:6px 11px;color:var(--ink);border:1px solid var(--line);border-radius:2px;background:transparent;text-decoration:none;white-space:nowrap}
nav a:hover,.btn:hover{background:#eef0e8}
.btn.dark{background:var(--ink);border-color:var(--ink);color:#f4f3ee}
.btn.dark:hover{background:var(--accent);border-color:var(--accent)}
main{padding:22px;display:flex;flex-direction:column;align-items:center;gap:22px}
.page{width:min(1160px,100%);background:var(--paper);padding:30px 42px 34px}
.eyebrow{display:flex;justify-content:space-between;font-size:11px;line-height:18px;color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:12px;margin-bottom:24px;letter-spacing:.2px}
.eyebrow span:first-child{color:var(--accent)}
.eyebrow span:last-child{letter-spacing:1.5px}
h1{font-size:34px;line-height:1.3;font-weight:600;letter-spacing:-.7px;margin:0}
h1 em{font-style:normal;color:var(--accent)}
.lead{font-size:15px;line-height:1.7;color:var(--muted);margin:10px 0 0;max-width:70ch}

/* cover */
.cover{position:relative;padding:0;color:#fff;background:#141713;min-height:360px;overflow:hidden;display:flex}
.cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 55%}
.cover .shade{position:absolute;inset:0;background:linear-gradient(0deg,rgba(14,16,13,.85) 0%,rgba(14,16,13,.3) 60%,rgba(14,16,13,.4) 100%)}
.cover .in{position:relative;flex:1;padding:32px 40px 30px;display:flex;flex-direction:column}
.cover .top{display:flex;justify-content:space-between;font-size:11px;letter-spacing:1.5px;color:rgba(255,255,255,.75)}
.cover .top b{font-size:22px;letter-spacing:3px;color:#fff;font-weight:700}
.cover .mid{margin-top:auto}
.cover .tag{font-size:12px;letter-spacing:1px;color:#e39a62}
.cover h1{font-size:44px;line-height:1.2;margin-top:10px;color:#fff}
.cover .sub{font-size:16px;line-height:1.6;color:rgba(255,255,255,.82);margin:12px 0 0;max-width:60ch}

/* cards */
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:4px}
.card{display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);text-decoration:none;transition:border-color .15s,transform .15s}
.card:hover{border-color:var(--ink);transform:translateY(-2px)}
.card .thumb{aspect-ratio:16/9;background:#d9dcd3 center/cover no-repeat;border-bottom:1px solid var(--line)}
.card .thumb.blank{aspect-ratio:16/6;display:flex;align-items:center;justify-content:center;font-size:30px;font-weight:600;letter-spacing:-1px;color:var(--accent);background:var(--soft)}
.card .body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.card .meta{display:flex;justify-content:space-between;gap:10px;font-size:11px;color:var(--muted);margin-bottom:6px}
.card h3{font-size:17px;line-height:1.4;font-weight:600;margin:0 0 6px}
.card p{margin:0;font-size:13px;line-height:1.65;color:var(--body);flex:1}
.card .go{margin-top:14px;font-size:12px;color:var(--accent)}
.badge{font-size:10px;letter-spacing:.5px;padding:1px 6px;border-radius:2px;border:1px solid var(--line)}
.badge.public{color:#3d6b3a;border-color:#b9cdb4;background:#eef4ec}
.badge.internal{color:var(--accent);border-color:#e3c6b0;background:var(--soft)}
.empty{font-size:13px;color:var(--muted)}

/* article (rendered docs) */
.doc{max-width:860px;overflow-wrap:anywhere;font-size:15px;line-height:1.8;color:var(--body)}
.doc h1{font-size:30px;color:var(--ink);margin-bottom:8px}
.doc h2{font-size:22px;line-height:1.4;color:var(--ink);font-weight:600;margin:40px 0 12px;padding-bottom:8px;border-bottom:1px solid var(--ink)}
.doc h3{font-size:17px;color:var(--ink);margin:26px 0 8px}
.doc strong{color:var(--ink)}
.doc a{color:var(--accent);text-decoration:none;border-bottom:1px solid #e3c6b0}
.doc hr{border:0;border-top:1px solid var(--line);margin:30px 0}
.doc ul,.doc ol{padding-left:22px}
.doc li{margin:4px 0}
.doc .tbl{overflow-x:auto;margin:14px 0}
.doc table{border-collapse:collapse;width:100%;font-size:13px;line-height:1.55}
.doc th{text-align:left;font-weight:600;color:var(--ink);border-bottom:1px solid var(--ink);padding:8px 10px 8px 0;white-space:nowrap}
.doc td{border-bottom:1px solid var(--line);padding:8px 10px 8px 0;vertical-align:top}
.toc{display:flex;flex-wrap:wrap;gap:6px;margin:18px 0 0}
.toc a{font-size:12px;padding:4px 9px;border:1px solid var(--line);border-radius:2px;text-decoration:none;color:var(--body);background:var(--paper)}
.toc a:hover{border-color:var(--ink)}

footer{min-height:54px;display:flex;justify-content:center;align-items:center;gap:22px;font-size:12px;color:var(--muted);padding:0 16px 22px;flex-wrap:wrap}
footer a{text-decoration:none}
footer a:hover{color:var(--accent)}

@media(max-width:1000px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:700px){
  header{padding:0 15px}
  header .brand span{display:none}
  main{padding:12px;gap:12px}
  .page{padding:22px 16px}
  h1{font-size:26px}
  .cover{min-height:340px}
  .cover .in{padding:22px 18px}
  .cover h1{font-size:32px}
  .cover .sub{font-size:14px}
  .cards{grid-template-columns:1fr}
  .doc h1{font-size:24px}
}