:root{
  --bg:#eaf3f0; --bg2:#f7fbfa; --panel:#ffffff; --text:#133a34; --muted:#426963;
  --brand:#0f6a5c; --brand-strong:#0a4f45; --accent:#f2b233; --danger:#a24d47; --good:#1a7a62;
  --line:#c8dfda; --line-strong:#8abcae; --radius:18px;
  --shadow:0 10px 28px rgba(20,57,52,.08);
  --font:"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
body{margin:0;background:linear-gradient(180deg,var(--bg),var(--bg2));color:var(--text);
  font-family:var(--font);font-size:18px;line-height:1.75;-webkit-font-smoothing:antialiased}
.wrap{max-width:840px;margin:0 auto;padding:24px 18px 64px}
.site-head{display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 0 18px;border-bottom:1px solid var(--line);margin-bottom:8px}
.brand{color:var(--brand);text-decoration:none;font-weight:700}
.sync-note{color:var(--muted);font-size:13px}
.doc{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:28px 30px;margin-top:14px}
.doc h1{font-size:30px;line-height:1.3;margin:.2em 0 .6em;color:var(--brand-strong)}
.doc h2{font-size:23px;margin:1.4em 0 .6em;color:var(--brand);border-left:4px solid var(--accent);padding-left:12px}
.doc h3{font-size:19px;margin:1.2em 0 .5em;color:var(--text)}
.doc p{margin:.7em 0}
.doc a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.doc ul,.doc ol{padding-left:1.4em;margin:.6em 0}
.doc li{margin:.35em 0}
.doc blockquote{margin:1em 0;padding:12px 18px;background:var(--bg);
  border-left:4px solid var(--line-strong);border-radius:12px;color:var(--muted)}
.doc blockquote p{margin:.3em 0}
.doc img{max-width:100%;height:auto;border-radius:12px;border:1px solid var(--line);display:block;margin:1em auto}
.doc hr{border:none;border-top:1px solid var(--line);margin:1.6em 0}
.doc code{background:var(--bg);padding:2px 6px;border-radius:6px;font-size:.92em}
.doc .notice{background:#fff5e6;border:1px solid var(--accent);color:#8a5a00;padding:16px 18px;border-radius:12px}
.doc a.inline-cite{display:inline-block;background:var(--bg);border:1px solid var(--line);color:var(--brand);text-decoration:none;border-radius:999px;padding:1px 10px;font-size:.9em;margin:0 2px;vertical-align:middle}
.doc .inline-sheet{display:inline-block;background:#eef4f2;border:1px dashed var(--line-strong);color:var(--muted);border-radius:10px;padding:2px 10px;font-size:.88em;margin:0 2px}
.doc a.attach{display:inline-flex;align-items:center;gap:10px;background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:10px 14px;margin:4px 0;color:var(--text);text-decoration:none;transition:border-color .15s,box-shadow .15s}
.doc a.attach:hover{border-color:var(--brand);box-shadow:0 4px 14px rgba(20,57,52,.08)}
.doc .attach-ic{font-size:1.1em;flex:none}
.doc .attach-name{font-weight:600;color:var(--brand)}
.doc .attach-meta{font-size:.82em;color:var(--muted);flex:none}
.topic-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;margin-top:18px}
.cite-card{display:flex;flex-direction:column;gap:6px;background:var(--panel);border:1px solid var(--line);
  border-radius:14px;padding:16px 18px;text-decoration:none;color:var(--text);transition:.15s;box-shadow:var(--shadow)}
.cite-card:hover{border-color:var(--brand);transform:translateY(-2px)}
.cite-tag{align-self:flex-start;font-size:12px;color:var(--brand);background:var(--bg);
  border:1px solid var(--line);border-radius:999px;padding:2px 10px}
.cite-title{font-weight:700;font-size:16px;line-height:1.4}
.cite-go{font-size:13px;color:var(--muted)}
.site-foot{display:flex;justify-content:space-between;gap:12px;margin-top:22px;padding-top:14px;
  border-top:1px solid var(--line);color:var(--muted);font-size:13px}
.site-foot a{color:var(--brand);text-decoration:none}
/* ===== 知识库顶部 Banner（hero）===== */
.kb-hero{position:relative;border-radius:var(--radius);overflow:hidden;margin:6px 0 18px;
  background:#0a4f45 url('assets/banner.png') center/cover no-repeat;min-height:300px;
  display:flex;align-items:flex-end}
.kb-hero::before{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,79,69,.94) 0%,rgba(10,79,69,.62) 44%,rgba(10,79,69,0) 72%)}
.kb-hero-text{position:relative;z-index:1;padding:30px 34px;color:#fff;max-width:600px}
.kb-hero-badge{display:inline-block;font-size:12px;letter-spacing:.14em;color:#0a4f45;
  background:var(--accent);padding:5px 13px;border-radius:999px;font-weight:700}
.kb-hero-title{font-size:40px;line-height:1.12;margin:.45em 0 .28em;font-weight:800;color:#fff;
  text-shadow:0 2px 14px rgba(0,0,0,.28)}
.kb-hero-sub{font-size:17px;color:#eafff7;margin:0 0 18px;opacity:.95}
.kb-hero-cta{display:inline-block;background:#fff;color:var(--brand-strong);font-weight:700;
  text-decoration:none;padding:11px 24px;border-radius:999px;font-size:15px;
  box-shadow:0 8px 22px rgba(0,0,0,.22);transition:.15s}
.kb-hero-cta:hover{transform:translateY(-2px);background:var(--accent)}
.share-banner{margin:36px auto 8px;padding:18px 24px;max-width:980px;background:linear-gradient(135deg,#fff6e0 0%,#ffe8c2 100%);border:1px solid var(--accent);border-radius:16px;display:flex;align-items:center;gap:14px;box-shadow:0 6px 18px rgba(242,178,51,.15)}
.share-banner h2{font-size:1.18em;color:var(--brand-strong);margin:0;font-weight:600;letter-spacing:.5px}
.share-banner .share-ic{font-size:1.6em;flex:none}
@media(max-width:560px){.doc{padding:20px 16px}.doc h1{font-size:25px}
  .kb-hero{min-height:240px}.kb-hero-title{font-size:30px}.kb-hero-text{padding:22px}}