/* GalShelf /docs (Phase 5 R11). Paper palette shared with site.css; dark tokens for night reading. */
:root{
  --bg:#fcf8f4;--surface:#fffdfa;--surface-2:#f4ece9;--text:#3c3539;--muted:#7d6d76;--line:#e6dbdc;
  --accent:#795c70;--accent-strong:#624b5b;--accent-soft:#f1e5e9;--link:#8a5570;--focus:#916881;
  --code-bg:#f1e8e9;--ok:#2f6b4f;--ok-bg:#e3f1e8;--cand:#6a4f8a;--cand-bg:#ece5f6;--plan:#8a5a1f;--plan-bg:#f8ecd9;
  --no:#6b6167;--no-bg:#ece7e9;--warn:#8a3b2f;--warn-bg:#f8e3de;--tip:#2f5f73;--tip-bg:#e1eef3;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#1b1719;--surface:#231e21;--surface-2:#2b2428;--text:#ece3e7;--muted:#b3a4ac;--line:#3b3237;
    --accent:#c79ab4;--accent-strong:#e0b8cd;--accent-soft:#3a2d35;--link:#e2b3cc;--focus:#e0b8cd;
    --code-bg:#322a2f;--ok:#8fd3ae;--ok-bg:#1f3529;--cand:#c9b4ec;--cand-bg:#2e2640;--plan:#f0c78a;--plan-bg:#3d2f1b;
    --no:#c2b6bc;--no-bg:#332c30;--warn:#f3a99b;--warn-bg:#40251f;--tip:#9fd0e3;--tip-bg:#1d313a;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#1b1719;--surface:#231e21;--surface-2:#2b2428;--text:#ece3e7;--muted:#b3a4ac;--line:#3b3237;
  --accent:#c79ab4;--accent-strong:#e0b8cd;--accent-soft:#3a2d35;--link:#e2b3cc;--focus:#e0b8cd;
  --code-bg:#322a2f;--ok:#8fd3ae;--ok-bg:#1f3529;--cand:#c9b4ec;--cand-bg:#2e2640;--plan:#f0c78a;--plan-bg:#3d2f1b;
  --no:#c2b6bc;--no-bg:#332c30;--warn:#f3a99b;--warn-bg:#40251f;--tip:#9fd0e3;--tip-bg:#1d313a;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body.docs-body{margin:0;background:var(--bg);color:var(--text);font:16px/1.75 "Segoe UI","Microsoft YaHei","PingFang SC",system-ui,sans-serif;overflow-x:hidden}
a{color:var(--link)}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}
.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0 0 0 0)!important;white-space:nowrap!important;border:0!important}
.docs-skip{position:absolute;left:-10000px;top:8px;background:var(--surface);padding:10px 14px;z-index:30;border-radius:6px}
.docs-skip:focus{left:12px}

/* Header */
.docs-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:18px;padding:10px 24px;background:color-mix(in srgb,var(--bg) 92%,transparent);border-bottom:1px solid var(--line);backdrop-filter:blur(8px)}
.docs-brand{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;flex:0 0 auto}
.docs-brand img{border-radius:9px}
.docs-brand strong{font-family:Georgia,"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;font-size:24px;font-weight:600}
.docs-brand span{font-size:13px;letter-spacing:1px;color:var(--muted)}
.docs-search{position:relative;display:flex;flex:1 1 360px;max-width:520px;gap:6px}
.docs-search input{flex:1;min-width:0;min-height:38px;padding:6px 12px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--text);font:inherit;font-size:14px}
.docs-search-go{min-height:38px;padding:0 14px;border:1px solid var(--line);border-radius:10px;background:var(--surface-2);color:var(--text);font:inherit;font-size:14px;cursor:pointer}
.docs-results{position:absolute;left:0;right:0;top:calc(100% + 6px);max-height:min(70vh,520px);overflow:auto;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:0 18px 50px rgba(40,20,30,.18);padding:6px;z-index:25}
.docs-results a{display:block;padding:8px 10px;border-radius:8px;color:var(--text);text-decoration:none}
.docs-results a[aria-selected="true"],.docs-results a:hover{background:var(--accent-soft)}
.docs-results strong{display:block;font-size:14px;color:var(--accent-strong)}
.docs-results span{display:block;font-size:12.5px;color:var(--muted);line-height:1.5}
.docs-results p{margin:8px 10px;font-size:13px;color:var(--muted)}
.docs-top{display:flex;align-items:center;gap:16px;margin-left:auto;font-size:14px}
.docs-top>a{color:var(--text);text-decoration:none;white-space:nowrap}
.docs-top>a:hover{color:var(--link)}
.docs-theme{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--text);font-size:17px;cursor:pointer}
.lang-links{background:var(--surface);border-color:var(--line)}
.lang-links a[aria-current="true"]{background:var(--accent);color:var(--bg)}

/* Layout */
.docs-layout{display:grid;grid-template-columns:270px minmax(0,1fr);gap:40px;max-width:1280px;margin:0 auto;padding:0 24px}
.docs-nav-wrap{position:sticky;top:64px;align-self:start;max-height:calc(100vh - 64px);overflow:auto;padding:22px 4px 40px 0}
.docs-nav-toggle{display:none}
.docs-nav{font-size:14px}
.docs-nav h2{font-size:12px;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted);margin:20px 0 6px;font-weight:600}
.docs-nav ul{list-style:none;margin:0;padding:0}
.docs-nav a{display:block;padding:5px 10px;min-height:32px;border-radius:8px;color:var(--text);text-decoration:none;line-height:1.5}
.docs-nav a:hover{background:var(--surface-2)}
.docs-nav a[aria-current="page"]{background:var(--accent-soft);color:var(--accent-strong);font-weight:600}
.docs-nav-home{margin:0}
.docs-main{min-width:0;padding:26px 0 70px;outline:none}
.docs-crumbs{display:flex;gap:8px;font-size:13px;color:var(--muted)}
.docs-crumbs a{color:var(--muted)}
.docs-article{max-width:820px}
.docs-article-head h1{font-family:Georgia,"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;font-size:clamp(30px,4vw,42px);font-weight:500;line-height:1.35;margin:10px 0 8px;letter-spacing:.5px}
.docs-summary{font-size:17px;color:var(--muted);margin:0 0 14px}

/* Availability badges */
.docs-badges{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:10px 0 18px;padding:0}
.badge{display:inline-flex;align-items:stretch;border-radius:999px;font-size:12.5px;line-height:1.3;overflow:hidden;border:1px solid transparent}
.badge-k{padding:4px 9px;background:var(--surface-2);color:var(--muted)}
.badge-v{padding:4px 10px;font-weight:600}
.badge-available{border-color:var(--ok-bg)}.badge-available .badge-v{background:var(--ok-bg);color:var(--ok)}
.badge-candidate{border-color:var(--cand-bg)}.badge-candidate .badge-v{background:var(--cand-bg);color:var(--cand)}
.badge-planned{border-color:var(--plan-bg)}.badge-planned .badge-v{background:var(--plan-bg);color:var(--plan)}
.badge-unavailable,.badge-na{border-color:var(--no-bg)}.badge-unavailable .badge-v,.badge-na .badge-v{background:var(--no-bg);color:var(--no)}
.badge-note{flex-basis:100%;font-size:13px;color:var(--muted)}

/* On this page */
.docs-onpage{margin:6px 0 26px;padding:12px 16px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
.docs-onpage summary{cursor:pointer;font-weight:600;font-size:14px;min-height:28px}
.docs-onpage ol{margin:8px 0 0;padding-left:20px;columns:2;column-gap:28px;font-size:14px}
.docs-onpage li{break-inside:avoid;padding:2px 0}

/* Content */
.docs-content{overflow-wrap:break-word}
.docs-content h2{font-family:Georgia,"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;font-size:26px;font-weight:500;margin:42px 0 12px;padding-top:6px;border-top:1px solid var(--line);line-height:1.4}
.docs-content h3{font-size:19px;margin:28px 0 8px;line-height:1.45}
.docs-content h4{font-size:16px;margin:22px 0 6px}
.docs-content .anchor{margin-left:8px;font-size:.8em;color:var(--muted);text-decoration:none;opacity:0}
.docs-content h2:hover .anchor,.docs-content h3:hover .anchor,.docs-content .anchor:focus{opacity:1}
.docs-content p,.docs-content li{color:var(--text)}
.docs-content ul,.docs-content ol{padding-left:24px}
.docs-content li{margin:4px 0}
.docs-content code{font:13.5px/1.5 Consolas,"Cascadia Mono",monospace;background:var(--code-bg);padding:2px 6px;border-radius:5px;overflow-wrap:anywhere}
.docs-content pre{background:var(--code-bg);padding:14px 16px;border-radius:10px;overflow:auto;max-width:100%}
.docs-content pre code{background:none;padding:0;overflow-wrap:normal;white-space:pre}
.docs-content kbd{font:12.5px Consolas,monospace;padding:2px 7px;border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;background:var(--surface)}
.docs-content blockquote{margin:16px 0;padding:4px 16px;border-left:3px solid var(--accent);color:var(--muted)}
.docs-content img{max-width:100%;height:auto;border-radius:10px;border:1px solid var(--line)}
.docs-content a.ext::after{content:" ↗";font-size:.85em}
.table-wrap{overflow-x:auto;margin:16px 0;border:1px solid var(--line);border-radius:10px}
.table-wrap table{border-collapse:collapse;width:100%;font-size:14.5px}
.table-wrap th,.table-wrap td{padding:9px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.table-wrap thead th{background:var(--surface-2);font-weight:600}
.table-wrap tbody tr:last-child>*{border-bottom:0}
.al-c{text-align:center!important}.al-r{text-align:right!important}
.callout{margin:18px 0;padding:12px 16px;border-radius:12px;border:1px solid var(--line);background:var(--surface)}
.callout>p:first-child,.callout .callout-title{margin:0 0 4px;font-weight:700;font-size:14px;letter-spacing:.3px}
.callout p:last-child{margin-bottom:0}
.callout-note{border-left:4px solid var(--accent)}
.callout-tip{border-left:4px solid var(--tip);background:var(--tip-bg)}.callout-tip .callout-title{color:var(--tip)}
.callout-warning,.callout-important{border-left:4px solid var(--warn);background:var(--warn-bg)}.callout-warning .callout-title,.callout-important .callout-title{color:var(--warn)}
.callout-planned{border-left:4px solid var(--plan);background:var(--plan-bg)}.callout-planned .callout-title{color:var(--plan)}
.callout-candidate{border-left:4px solid var(--cand);background:var(--cand-bg)}.callout-candidate .callout-title{color:var(--cand)}
.callout-unavailable{border-left:4px solid var(--no);background:var(--no-bg)}
.docs-content .docs-badges{margin:4px 0 14px;padding-left:0}

/* Pager, index, search */
.docs-pager{display:flex;justify-content:space-between;gap:16px;margin-top:48px;padding-top:20px;border-top:1px solid var(--line)}
.docs-pager a{display:flex;flex-direction:column;max-width:48%;padding:10px 14px;border:1px solid var(--line);border-radius:12px;text-decoration:none;color:var(--text);background:var(--surface)}
.docs-pager a:hover{border-color:var(--accent)}
.docs-pager small{color:var(--muted);font-size:12px}
.docs-next{margin-left:auto;text-align:right}
.docs-group h2{font-family:Georgia,"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;font-weight:500;font-size:24px;margin:36px 0 12px}
.docs-cards{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.docs-cards>li{border:1px solid var(--line);border-radius:14px;background:var(--surface);padding:14px 16px}
.docs-cards a{display:block;text-decoration:none;color:var(--text)}
.docs-cards strong{display:block;font-size:16px;color:var(--accent-strong)}
.docs-cards span{display:block;font-size:13.5px;color:var(--muted);line-height:1.55;margin-top:4px}
.docs-cards .docs-badges{margin:10px 0 0}
.docs-cards .badge{font-size:11.5px}
.docs-matrix .badge{font-size:12px}
.docs-search-results{margin:10px 0 30px;padding:16px 18px;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
.docs-search-results h2{margin:0 0 6px;font-size:20px}
.docs-search-results li{margin:10px 0}
.docs-search-results li p{margin:2px 0 0;font-size:14px;color:var(--muted)}
.docs-button{display:inline-flex;align-items:center;min-height:38px;padding:0 16px;border-radius:10px;background:var(--accent);color:var(--bg);text-decoration:none}
.docs-footer{border-top:1px solid var(--line);padding:22px 24px 30px;text-align:center;font-size:13px;color:var(--muted)}
.docs-footer p{margin:4px 0}

/* Narrow screens: one column, collapsible contents, header wraps */
@media (max-width:900px){
  html{scroll-padding-top:16px}
  .docs-header{position:static;flex-wrap:wrap;gap:10px;padding:10px 16px}
  .docs-search{order:3;flex-basis:100%;max-width:none}
  .docs-top{gap:10px;font-size:13px}
  .docs-layout{grid-template-columns:minmax(0,1fr);gap:0;padding:0 16px}
  .docs-nav-wrap{position:static;max-height:none;padding:12px 0 0;overflow:visible}
  .docs-nav-toggle{display:flex;align-items:center;min-height:40px;padding:0 14px;border:1px solid var(--line);border-radius:10px;background:var(--surface);cursor:pointer;font-weight:600}
  .docs-nav{padding:4px 4px 8px}
  .docs-main{padding-top:14px}
  .docs-onpage ol{columns:1}
  .docs-pager{flex-direction:column}
  .docs-pager a{max-width:none}
  .docs-next{margin-left:0}
}
@media (max-width:520px){
  .docs-top>a{display:none}
  .docs-brand span{display:none}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media print{.docs-header,.docs-nav-wrap,.docs-pager,.docs-footer{display:none}.docs-layout{display:block}}