:root{
  --bg:#FFF8E7; --surface:#FFFFFF; --surface2:#FFF3D6; --soft:#F7E9C8;
  --ink:#4A3527; --line:#EAD9B8;
  --text:#4A3527; --muted:#77603F; --dim:#8A7358;
  --grass:#7BC043; --grass-d:#5DA130; --sky:#6EC6E8; --water:#4FA8D8;
  --sun:#FFC93C; --orange:#F59B3C; --tomato:#E8543F; --pink:#F5A3B8; --purple:#9B7BC8;
  --wood:#A9714B; --wood-d:#7A4F32;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);
  font:15px/1.75 "Nunito","Quicksand",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-weight:500}
a{color:var(--grass-d);text-decoration:none;font-weight:700}
a:hover{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px}

.topbar{position:sticky;top:0;z-index:20;background:var(--surface);
  border-bottom:3px solid var(--ink);padding:12px 22px}
.brand{display:inline-flex;align-items:center;gap:11px;color:var(--text);text-decoration:none}
.brand:hover{text-decoration:none}
.lantern{font-size:26px;line-height:1}
.brand b{display:block;font-size:16px;letter-spacing:.4px;font-weight:800}
.brand em{display:block;font-style:normal;font-size:11px;color:var(--dim);letter-spacing:1.5px;font-weight:700}

.wrap{max-width:1180px;margin:0 auto;padding:26px 22px 80px}
.wrap.has-side{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:30px;align-items:start}
.wrap.has-side .side{grid-column:2;grid-row:1;position:sticky;top:88px;order:2}
.wrap.has-side .doc{grid-column:1;grid-row:1;min-width:0}

/* 首页 —— 紧凑版：一屏尽量多放几份文档，卡片只留「标题 + 一行概要 + 一行元信息」 */
.hero{background:#F2FBE3;border:2px solid var(--ink);border-radius:16px;
  box-shadow:0 3px 0 var(--ink);padding:12px 14px;margin-bottom:16px;
  display:flex;align-items:center;gap:8px 14px;flex-wrap:wrap}
.hero h1{margin:0;font-size:19px;font-weight:900;letter-spacing:.4px;color:#2F5E12}
.hero .stat{color:var(--muted);font-size:11.5px;font-weight:800;font-family:var(--mono)}
.search{flex:1 1 220px;min-width:0;max-width:420px;margin-left:auto;
  background:var(--surface);border:2px solid var(--ink);color:var(--text);
  border-radius:999px;padding:7px 14px;font-size:13px;font-weight:600;outline:none;
  font-family:inherit;transition:.15s}
.search::placeholder{color:var(--dim)}
.search:focus{box-shadow:0 0 0 3px rgba(123,192,67,.3)}
.empty{color:var(--muted);padding:30px 0;text-align:center;font-weight:700}

.cat{margin-bottom:36px}
.cat-title{font-size:18px;margin:0 0 16px;display:flex;align-items:center;gap:10px;font-weight:900;
  letter-spacing:.5px}
.cat-title::before{content:"";width:14px;height:14px;border-radius:50%;
  background:var(--grass);border:2px solid var(--ink)}
.cat-title .count{font-size:11.5px;color:var(--ink);background:var(--sun);border:2px solid var(--ink);
  border-radius:999px;padding:1px 10px;font-weight:800}

/* ── 项目分区（首页第一层）─────────────────────────────
   这个仓库同时挂着两条独立产品线，分类名（玩法/美术）在两条线里重复，
   所以第一层必须按项目分开，项目内部再按分类分组。 */
.proj{margin-bottom:20px;padding:12px 14px 2px;background:var(--surface2);
  border:2px solid var(--ink);border-radius:16px;box-shadow:0 3px 0 var(--ink)}
.proj-head{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;
  border-bottom:2px dashed var(--line);padding-bottom:9px;margin-bottom:10px}
.proj-title{font-size:18px;margin:0;font-weight:900;letter-spacing:.4px}
.proj-link{color:inherit;text-decoration:none;border-bottom:3px solid var(--sun)}
.proj-link:hover{background:var(--sun)}
.proj-count{font-size:11px;color:var(--dim);font-family:var(--mono);font-weight:700;
  flex:1;min-width:140px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;
  overflow:hidden}
.subcat{margin-bottom:11px}
.subcat-title{font-size:12px;margin:0 0 7px;display:flex;align-items:center;gap:7px;
  font-weight:900;color:var(--muted);letter-spacing:.9px}
.subcat-title::before{content:"";width:8px;height:8px;border-radius:2px;
  background:var(--sky);border:1.5px solid var(--ink)}
.subcat-title .count{font-size:10px;color:var(--ink);background:var(--surface);
  border:1.5px solid var(--ink);border-radius:999px;padding:0 7px;font-weight:800}
.proj-pill{background:var(--soft);border:2px solid var(--ink);border-radius:999px;padding:1px 11px;
  font-size:12px;font-weight:800}

/* 卡片：标题 + 一行概要 + 一行元信息。高度约 66px，桌面三列、手机一列 */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(232px,1fr));gap:8px}
.card{display:flex;flex-direction:column;gap:3px;background:var(--surface);
  border:1.5px solid var(--ink);border-radius:11px;padding:8px 10px;color:var(--text);
  transition:.12s;text-decoration:none;box-shadow:0 2px 0 var(--ink);min-height:62px}
.card:hover{text-decoration:none;transform:translateY(-2px);box-shadow:0 4px 0 var(--ink);background:#F4FBE8}
.card-top{display:flex;align-items:flex-start;gap:7px}
.card h3{margin:0;font-size:13.6px;line-height:1.42;font-weight:800;letter-spacing:.1px;
  flex:1;min-width:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card .summary{margin:0;font-size:11.8px;line-height:1.5;color:var(--muted);font-weight:600;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;gap:6px;margin-top:auto;padding-top:2px;
  font-size:10.5px;color:var(--dim);font-weight:700;white-space:nowrap;overflow:hidden}
.card-meta time{font-family:var(--mono)}
.card-meta .dot{opacity:.45}
.card-meta .tag{color:var(--dim)}
.card .badge{flex:0 0 auto;font-size:10px;padding:0 6px;border-width:1.5px;line-height:1.55}

.badge{font-size:11.5px;padding:2px 10px;border-radius:999px;border:2px solid var(--ink);
  color:var(--ink);background:var(--surface2);white-space:nowrap;font-weight:800}
.badge-ok{background:#DDF3C8}
.badge-info{background:#D6EEF9}
.badge-dead{background:#EFE3CE}

/* 详情 */
.crumb{font-size:12.5px;color:var(--muted);margin-bottom:16px;display:flex;align-items:center;gap:9px;
  flex-wrap:wrap;font-weight:700}
.crumb .sep{color:var(--dim)}
.cat-pill{background:var(--sun);border:2px solid var(--ink);border-radius:999px;padding:1px 11px;
  color:var(--ink);font-weight:800}
.doc-title{margin:0 0 14px;font-size:30px;line-height:1.3;letter-spacing:.4px;font-weight:900}
.doc-meta{display:flex;flex-wrap:wrap;align-items:center;gap:9px;padding-bottom:18px;
  border-bottom:3px solid var(--line);margin-bottom:26px;font-size:12.5px;color:var(--muted);font-weight:700}
.doc-meta time{font-family:var(--mono)}
.doc-meta .tag{color:var(--dim)}
.doc-meta .src{font-family:var(--mono);margin-left:auto;opacity:.75}

.toc{background:var(--surface);border:2px solid var(--ink);border-radius:18px;padding:14px 16px;
  box-shadow:0 3px 0 var(--ink);max-height:calc(100vh - 130px);overflow:auto;font-size:13px}
.toc-title{font-size:11px;letter-spacing:1.8px;color:var(--dim);margin-bottom:10px;font-weight:900}
.toc a{display:block;color:var(--muted);padding:4px 0;line-height:1.5;font-weight:700}
.toc a:hover{color:var(--grass-d);text-decoration:none}
.toc-l3{padding-left:14px !important;font-size:12.4px;opacity:.9}

/* 正文 */
.prose{font-size:15.5px;line-height:1.85;color:#3E2C20;min-width:0}
.prose h2{margin:40px 0 15px;font-size:21px;font-weight:900;letter-spacing:.3px;
  padding-left:13px;border-left:6px solid var(--grass);border-radius:3px}
.prose h3{margin:30px 0 12px;font-size:17px;font-weight:800}
.prose h4{margin:22px 0 9px;font-size:15px;font-weight:800;color:var(--muted)}
.prose p{margin:13px 0}
.prose ul,.prose ol{margin:13px 0;padding-left:24px}
.prose li{margin:5px 0}
.prose li::marker{color:var(--grass)}
.prose strong{color:#33241A;font-weight:800}
.prose hr{border:0;border-top:3px dashed var(--line);margin:32px 0}
.prose .anchor{opacity:0;margin-left:8px;color:var(--dim);font-weight:400;text-decoration:none}
.prose h2:hover .anchor,.prose h3:hover .anchor{opacity:1}
.prose code{font-family:var(--mono);font-size:13px;background:var(--soft);border:1.5px solid var(--line);
  border-radius:7px;padding:1.5px 6px;color:var(--wood-d);font-weight:600}
.prose pre.code{background:var(--surface);border:2px solid var(--ink);border-radius:14px;padding:15px 17px;
  overflow:auto;margin:17px 0;line-height:1.7;box-shadow:0 3px 0 var(--ink)}
.prose pre.code code{background:none;border:0;padding:0;color:#3E2C20;font-size:12.8px;font-weight:500}
.prose blockquote{margin:16px 0;padding:2px 16px;border-left:4px solid var(--line);color:var(--muted)}

.table-wrap{overflow-x:auto;margin:17px 0;border:2px solid var(--ink);border-radius:14px;
  box-shadow:0 3px 0 var(--ink);background:var(--surface)}
.prose table{border-collapse:collapse;width:100%;font-size:13.6px;min-width:440px}
.prose th,.prose td{padding:10px 14px;text-align:left;border-bottom:2px solid var(--line);vertical-align:top}
.prose thead th{background:var(--surface2);color:var(--ink);font-weight:800;font-size:12.8px;
  letter-spacing:.3px;position:sticky;top:0}
.prose tbody tr:last-child td{border-bottom:0}
.prose tbody tr:hover{background:#FFFCF3}

.callout{border:2px solid var(--ink);border-radius:16px;padding:14px 18px;margin:19px 0;
  box-shadow:0 3px 0 var(--ink);background:var(--surface)}
.callout-title{font-weight:900;font-size:14px;margin-bottom:6px;letter-spacing:.3px}
.callout-body>*:first-child{margin-top:0}
.callout-body>*:last-child{margin-bottom:0}
.callout-body{font-size:14.4px;font-weight:600}
.callout-warning,.callout-danger,.callout-error{background:#FDE4DE}
.callout-warning .callout-title,.callout-danger .callout-title,.callout-error .callout-title{color:#B23A28}
.callout-note,.callout-info,.callout-tip{background:#DFF1FA}
.callout-note .callout-title,.callout-info .callout-title,.callout-tip .callout-title{color:#2C6E92}
.callout-success,.callout-ok{background:#E4F5D2}
.callout-success .callout-title,.callout-ok .callout-title{color:#3F7A22}

/* 图片 */
.doc-figure{margin:22px 0;text-align:center}
.doc-img{max-width:100%;height:auto;border:3px solid var(--ink);border-radius:16px;cursor:zoom-in;
  background:var(--surface);transition:.16s;display:block;margin:0 auto;box-shadow:0 4px 0 var(--ink)}
.doc-img:hover{transform:translateY(-3px);box-shadow:0 7px 0 var(--ink)}
.doc-figure figcaption{font-size:12.8px;color:var(--muted);margin-top:11px;font-weight:700}
.prose p>.doc-img{margin:18px auto}
#lightbox{position:fixed;inset:0;z-index:99;background:rgba(50,36,26,.94);display:none;
  align-items:center;justify-content:center;padding:30px;cursor:zoom-out}
#lightbox.on{display:flex}
.demo{margin:24px 0}
.demo-title{font-weight:700;margin:0 0 8px 2px}
.demo iframe{width:100%;border:3px solid var(--ink);border-radius:16px;background:#FDF8F0;display:block}
.demo-missing{padding:14px 16px;border:3px dashed var(--ink);border-radius:14px;opacity:.75}
#lightbox img{max-width:100%;max-height:100%;border-radius:12px;border:3px solid #FFF8E7;
  box-shadow:0 24px 60px rgba(0,0,0,.5)}
#lightbox .cap{position:absolute;bottom:22px;left:0;right:0;text-align:center;color:#FFF3D6;
  font-size:14px;font-weight:700}

.anim{background:var(--surface);border:2px solid var(--ink);border-radius:16px;box-shadow:0 3px 0 var(--ink);padding:14px 16px;margin:20px 0}
.anim-title{font-size:13.5px;font-weight:800;color:var(--ink);margin-bottom:10px;letter-spacing:.3px}
.anim-stage{display:flex;justify-content:center;align-items:center;background:var(--bg);border:1.5px solid var(--line);border-radius:12px;padding:14px}
.anim-view{background-repeat:no-repeat;border-radius:10px}
.anim-bar{display:flex;align-items:center;gap:10px;margin-top:12px;flex-wrap:wrap;font-size:12.5px;color:var(--muted);font-weight:700}
.anim-btn{font:inherit;font-weight:800;font-size:12.5px;color:var(--ink);background:var(--surface2);border:2px solid var(--ink);border-radius:999px;padding:4px 15px;cursor:pointer;box-shadow:0 2px 0 var(--ink);min-width:56px}
.anim-btn:hover{background:#F4FBE8}
.anim-btn:active{transform:translateY(2px);box-shadow:none}
.anim-speed{display:flex;align-items:center;gap:7px}
.anim-speed input{width:110px;accent-color:var(--grass)}
.anim-speed b{color:var(--ink);min-width:2.6em;font-family:var(--mono)}
.anim-info{margin-left:auto;font-family:var(--mono)}
.anim-info b{color:var(--ink)}

/* ── 右侧「大纲索引」抽屉 ────────────────────────────────
   手机上正文右侧没地方放 aside，所以给一个固定的竖条按钮，点开整站大纲。 */
.navbtn{position:fixed;right:0;top:50%;transform:translateY(-50%);z-index:60;
  display:flex;flex-direction:column;align-items:center;gap:3px;padding:9px 6px 10px;
  background:var(--sun);color:var(--ink);border:2px solid var(--ink);border-right:0;
  border-radius:12px 0 0 12px;box-shadow:-2px 2px 0 var(--ink);cursor:pointer;
  font-family:inherit;transition:.15s}
.navbtn:hover{background:#FFD75E;padding-right:9px}
.navbtn:active{transform:translateY(-50%) scale(.97)}
.navbtn-ico{font-size:15px;line-height:1}
.navbtn-txt{writing-mode:vertical-rl;font-size:10.5px;font-weight:900;letter-spacing:2.5px}
.navmask{position:fixed;inset:0;z-index:70;background:rgba(50,36,26,.42);
  opacity:0;pointer-events:none;transition:opacity .18s}
.navmask.on{opacity:1;pointer-events:auto}
.navdrawer{position:fixed;top:0;right:0;bottom:0;width:min(85vw,338px);z-index:80;
  display:flex;flex-direction:column;background:var(--surface);
  border-left:3px solid var(--ink);transform:translateX(103%);
  transition:transform .2s ease}
.navdrawer.on{transform:none;box-shadow:-10px 0 30px rgba(60,42,30,.24)}
body.nav-open{overflow:hidden}
.navhead{flex:0 0 auto;display:flex;align-items:center;justify-content:space-between;
  padding:11px 14px;border-bottom:2.5px dashed var(--line)}
.navhead b{font-size:14px;font-weight:900;letter-spacing:.6px}
.navclose{width:28px;height:28px;padding:0;line-height:1;cursor:pointer;font:inherit;
  font-size:12.5px;font-weight:900;color:var(--ink);background:var(--surface2);
  border:2px solid var(--ink);border-radius:999px}
.navclose:hover{background:var(--sun)}
.navbody{flex:1;overflow:auto;padding:10px 12px 40px;-webkit-overflow-scrolling:touch}
.o-home{display:block;padding:7px 10px;margin-bottom:8px;border-radius:10px;
  background:var(--surface2);border:2px solid var(--ink);font-size:12.5px;font-weight:800;
  color:var(--ink)}
.o-home:hover{text-decoration:none;background:#F4FBE8}
.o-home.on{background:var(--sun)}
.o-section{font-size:10px;letter-spacing:1.6px;color:var(--dim);font-weight:900;
  margin:12px 0 4px;padding-left:2px}
.o-proj{border-bottom:1.5px dashed var(--line)}
.o-proj summary{display:flex;align-items:center;gap:7px;padding:8px 2px;cursor:pointer;
  font-size:12.8px;font-weight:900;color:var(--ink);list-style:none}
.o-proj summary::-webkit-details-marker{display:none}
.o-proj summary::before{content:"▸";font-size:9px;color:var(--dim);transition:.15s}
.o-proj[open] summary::before{content:"▾"}
.o-proj summary b{margin-left:auto;font-size:10px;font-family:var(--mono);
  background:var(--sun);border:1.5px solid var(--ink);border-radius:999px;padding:0 6px}
.o-body{padding:0 0 8px 9px}
.o-cat{margin-bottom:5px}
.o-cat-t{display:block;font-size:10px;letter-spacing:1.1px;color:var(--dim);
  font-weight:900;margin:5px 0 1px}
.o-doc{display:block;padding:4px 8px;border-radius:8px;font-size:12.2px;line-height:1.5;
  font-weight:700;color:var(--muted)}
.o-doc:hover{background:#F4FBE8;color:var(--grass-d);text-decoration:none}
.o-doc.on{background:var(--sun);color:var(--ink)}
.o-overview{color:var(--grass-d);font-size:11.5px;padding-left:2px}
.o-tocgroup{border-bottom:1.5px dashed var(--line);padding-bottom:6px;margin-bottom:4px}
.o-tochead{font-size:10px;letter-spacing:1.6px;color:var(--dim);font-weight:900;margin:2px 0 3px 2px}
.o-toc{padding-left:8px}
.o-toc.l3{padding-left:22px;font-size:11.6px;opacity:.92}
.only-narrow{display:none}

@media (min-width:901px){
  .wrap{padding-right:46px}
}
@media (max-width:900px){
  .wrap.has-side{grid-template-columns:1fr}
  .wrap.has-side .side{display:none}
  .doc-title{font-size:23px}
  .cards{grid-template-columns:1fr}
  .only-narrow{display:block}
  .proj-count{flex-basis:100%;min-width:0}
}
@media (max-width:520px){
  .wrap{padding:16px 14px 70px}
  .hero{padding:10px 12px;gap:8px 10px}
  .hero h1{font-size:17px}
  .hero .stat{font-size:11px}
  .search{margin-left:0;flex-basis:100%;max-width:none}
  .proj{padding:10px 11px 2px;border-radius:14px}
  .card{min-height:0;padding:7px 9px}
  .card h3{font-size:13.2px}
  .navbtn{padding:8px 5px 9px}
}