/* ============================================================
   Theseus 模组文档站 — 共享样式
   风格：HP EWS 嵌入式设备控制台（浅色日间 / 深色夜间，随本地时间自动切换）
   · 白色顶区 + 深灰菜单条 + 左侧浅灰树形导航 + 右侧白色内容 + 浅灰页脚
   · 强调色为 HP 蓝（链接、激活、按钮、图标）
   · 无圆角 / 无投影 / 无渐变的扁平控制台；动效克制（一次性淡入、悬浮过渡）
   ============================================================ */

/* ---------- 浅色主题（日间，默认） ---------- */
:root {
  --bg: #f4f4f4;
  --panel: #ffffff;
  --side: #f1f1f1;
  --elev: #f7f8f9;
  --code-bg: #f6f7f8;
  --code-head: #ebedf0;
  --fg: #222222;
  --fg-dim: #555555;
  --fg-faint: #888888;
  --line: #d8d8d8;
  --line-strong: #b4b4b4;
  --accent: #0072ce;             /* HP 蓝 */
  --accent-strong: #005ca8;
  --accent-soft: rgba(0, 114, 206, 0.08);
  --ok: #1a7f4e;
  --ok-bg: rgba(26, 127, 78, 0.09);
  --warn: #b26a14;
  --warn-bg: rgba(178, 106, 20, 0.09);
  --plan: #5b6b7a;
  --plan-bg: rgba(91, 107, 122, 0.09);
  --danger: #c0392b;
  --danger-bg: rgba(192, 57, 43, 0.09);
  --bar: #3a3a3a;                /* 顶部菜单条，主题中性的深灰 */
}

/* ---------- 深色主题（夜间，当地 18:00–06:00） ---------- */
:root[data-theme="dark"] {
  --bg: #0f1215;
  --panel: #171a1e;
  --side: #14171a;
  --elev: #1c2126;
  --code-bg: #10161d;
  --code-head: #1a222b;
  --fg: #d8dcdd;
  --fg-dim: #9aa0a6;
  --fg-faint: #6c7278;
  --line: #2a2f34;
  --line-strong: #3d434a;
  --accent: #6fb3e0;
  --accent-strong: #9ccfff;
  --accent-soft: rgba(111, 179, 224, 0.12);
  --ok: #6fce94;
  --ok-bg: rgba(111, 206, 148, 0.12);
  --warn: #e0b25f;
  --warn-bg: rgba(224, 178, 95, 0.12);
  --plan: #94a3b1;
  --plan-bg: rgba(148, 163, 177, 0.12);
  --danger: #e08b86;
  --danger-bg: rgba(224, 139, 134, 0.12);
  --bar: #000000;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
* { scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
*::-webkit-scrollbar { width: 9px; height: 9px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 5px; border: 2px solid transparent; background-clip: padding-box; }
*::-webkit-scrollbar-corner { background: transparent; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  color: var(--fg);
  background: var(--panel);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: #fff; }

.mono { font-family: "Cascadia Code", "JetBrains Mono", Consolas, "SF Mono", "Courier New", monospace; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-strong); text-decoration: underline; text-underline-offset: 3px; }

/* ================= 顶部：白色品牌区（压缩高度） ================= */

.topbar { background: var(--panel); border-bottom: 1px solid var(--line); padding: 8px 20px; }
.brand-row { display: flex; align-items: center; gap: 11px; }
.brand-logo { width: 38px; height: 38px; object-fit: contain; flex: none; }
.brand-title .h1 { display: block; font-size: 22px; font-weight: 700; color: var(--fg); line-height: 1.1; }
.brand-title .sub { display: block; font-size: 12px; color: var(--fg-dim); margin-top: 1px; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid var(--line-strong); border-radius: 3px; padding: 7px 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 16px; height: 2px; background: var(--fg); margin: 3px 0; }
.nav-toggle:hover { background: var(--elev); }

/* ================= 主菜单：深灰横条 ================= */

.menubar {
  position: sticky; top: 0; z-index: 50;
  background: var(--bar); display: flex; align-items: stretch;
  height: 40px; padding: 0 8px;
}
.menubar a { display: flex; align-items: center; padding: 0 22px; font-size: 14px; color: #f2f2f2; white-space: nowrap; }
.menubar a:hover { background: rgba(255, 255, 255, 0.12); }
.menubar a.active { background: var(--panel); color: var(--accent); font-weight: 600; }

/* 站内搜索 */
.search-box { margin-left: auto; display: flex; align-items: center; padding: 0 14px; position: relative; }
.search-box input {
  width: 180px; height: 24px; box-sizing: border-box;
  background: rgba(255, 255, 255, 0.12); border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff; font-size: 12.5px; padding: 0 8px; outline: none;
  transition: width 0.15s ease, border-color 0.15s ease;
}
.search-box input::placeholder { color: rgba(255, 255, 255, 0.55); }
.search-box input:focus { width: 230px; border-color: var(--accent); background: rgba(255, 255, 255, 0.18); }
.search-results {
  position: absolute; right: 14px; top: 32px; width: 400px; max-height: 70vh; overflow-y: auto;
  background: var(--panel); border: 1px solid var(--line-strong);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.22); z-index: 60;
}
.search-results[hidden] { display: none; }
.search-results a { display: block; padding: 8px 12px; border-bottom: 1px solid var(--line); text-decoration: none; }
.search-results a:last-child { border-bottom: none; }
.search-results a:hover, .search-results a.on { background: var(--elev); text-decoration: none; }
.sr-g { display: block; font-size: 10.5px; color: var(--fg-faint); letter-spacing: 0.5px; }
.sr-t { display: block; font-size: 13px; font-weight: 600; color: var(--fg); }
.sr-x { display: block; font-size: 11.5px; color: var(--fg-dim); line-height: 1.5; margin-top: 2px; }
.search-empty { padding: 12px; font-size: 12.5px; color: var(--fg-dim); line-height: 1.6; }
@media (max-width: 900px) { .search-box { display: none; } }

/* 404 页（独立静态页，不参与导航） */
.nf-wrap { max-width: 640px; margin: 12vh auto 0; padding: 0 24px; }
.nf-code { font-size: 72px; font-weight: 700; color: var(--accent); line-height: 1; letter-spacing: 4px; }
.nf-wrap h1 { font-size: 22px; margin: 14px 0 10px; color: var(--fg); }
.nf-wrap p { color: var(--fg-dim); font-size: 13.5px; line-height: 1.8; }
.nf-links { margin-top: 22px; display: flex; flex-wrap: wrap; gap: 10px; }
.nf-links a { padding: 7px 14px; border: 1px solid var(--line-strong); color: var(--fg); text-decoration: none; font-size: 13px; }
.nf-links a:hover { border-color: var(--accent); color: var(--accent); }

/* ================= 主体：左侧树形导航 + 右侧内容 ================= */

.shell { display: flex; min-height: calc(100vh - 40px); }

.side {
  flex: none; width: 235px;
  background: var(--side);
  border-right: 1px solid var(--line-strong);
  padding: 18px 0 30px;
  position: sticky; top: 40px; height: calc(100vh - 40px);
  overflow-y: auto;
}
.side-title { font-size: 20px; font-weight: 700; color: var(--fg); margin: 0 20px 12px; padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.tree { list-style: none; margin: 0; padding: 0; }
.tree .node > .label { display: flex; align-items: center; gap: 8px; padding: 5px 20px; font-size: 14px; color: var(--fg); cursor: default; }
.tree .node > .label .ix { width: 14px; height: 14px; border: 1px solid var(--line-strong); border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: 11px; line-height: 1; color: var(--fg-dim); flex: none; }
.tree .toc { list-style: none; margin: 0; padding: 0; }
.tree .toc a { display: block; padding: 3px 20px 3px 46px; font-size: 13.5px; color: var(--fg); line-height: 1.6; transition: color 0.15s ease; }
.tree .toc li.l3 a { padding-left: 64px; font-size: 13px; }
.tree .toc a:hover { color: var(--accent); text-decoration: underline; }
.tree .toc a.active { color: var(--accent); font-weight: 600; }

/* 右侧内容区（白底、扁平） */
.content { flex: 1; min-width: 0; background: var(--panel); padding: 24px 40px 56px; }

/* 右侧「继续阅读」推荐栏 */
.rail-next {
  flex: none; width: 210px;
  position: sticky; top: 40px; align-self: flex-start;
  height: calc(100vh - 40px); overflow-y: auto;
  padding: 26px 18px 30px 6px; box-sizing: border-box;
}
.rail-next .rn-title { font-size: 13px; font-weight: 700; letter-spacing: 2px; color: var(--fg-dim); border-bottom: 1px solid var(--line); padding-bottom: 8px; margin-bottom: 4px; }
.rail-next .rn-list { list-style: none; margin: 0; padding: 0; }
.rail-next .rn-list a {
  display: block; padding: 10px 10px; margin-top: 2px;
  border-left: 3px solid var(--line-strong);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.rail-next .rn-list a:hover { border-left-color: var(--accent); background: var(--panel); }
.rail-next .rn-list .t { display: block; font-size: 13.5px; font-weight: 600; color: var(--fg); line-height: 1.5; }
.rail-next .rn-list a:hover .t { color: var(--accent); }
.rail-next .rn-list .d { display: block; font-size: 12px; color: var(--fg-dim); line-height: 1.55; margin-top: 2px; }
.content .crumb { font-size: 20px; font-weight: 700; color: var(--fg); margin: 0; }
.content h1.page { font-size: 19px; font-weight: 600; color: var(--fg-dim); margin: 3px 0 10px; }
.content .doc-sub { font-size: 13.5px; color: var(--fg-dim); margin: 0 0 12px; }
.content .hr-rule { border: none; border-bottom: 1px solid var(--line); margin: 0 0 30px; }
.content h2 { font-size: 20px; font-weight: 650; color: var(--fg); margin: 40px 0 14px; padding-bottom: 6px; border-bottom: 1px solid var(--line); scroll-margin-top: 56px; }
.content h3 { font-size: 16px; font-weight: 650; color: var(--fg); margin: 28px 0 10px; scroll-margin-top: 56px; }
.content h4 { font-size: 14.5px; font-weight: 600; color: var(--fg-dim); margin: 22px 0 8px; }
.content p { margin: 0 0 14px; color: var(--fg); }
.content ul, .content ol { margin: 0 0 14px; padding-left: 26px; }
.content li { margin-bottom: 5px; }
.content li > ul, .content li > ol { margin-top: 5px; }
.content li::marker { color: var(--fg-faint); }
.content hr { border: none; border-top: 1px solid var(--line-strong); margin: 38px 0; }
.content code { font-family: "Cascadia Code", Consolas, monospace; font-size: 0.88em; background: var(--elev); border: 1px solid var(--line); padding: 0 5px; color: var(--accent); }
.content a { color: var(--accent); }
.content a:hover { color: var(--accent-strong); }

/* 状态徽章（扁平） */
.st { display: inline-block; font-size: 12px; font-weight: 600; padding: 0 7px; line-height: 1.8; border: 1px solid; white-space: nowrap; vertical-align: 1px; }
.st.ok { background: var(--ok-bg); color: var(--ok); border-color: var(--ok); }
.st.plan { background: var(--plan-bg); color: var(--plan); border-color: var(--plan); }

/* 引用块（扁平） */
.content blockquote { margin: 0 0 14px; padding: 10px 16px; border-left: 3px solid var(--accent); background: var(--side); color: var(--fg-dim); }
.content blockquote p { margin: 0 0 6px; color: inherit; }
.content blockquote p:last-child { margin-bottom: 0; }

/* 表格（无圆角/投影） */
.content .table-scroll { overflow-x: auto; margin: 0 0 18px; border: 1px solid var(--line-strong); }
.content table { width: 100%; border-collapse: collapse; font-size: 13.5px; background: var(--panel); }
.content thead { background: var(--elev); }
.content th { text-align: left; font-weight: 600; color: var(--fg); padding: 8px 12px; border-bottom: 1px solid var(--line-strong); white-space: nowrap; font-size: 12.5px; }
.content td { padding: 7px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.content tbody tr:last-child td { border-bottom: none; }
.content tbody tr:hover { background: var(--accent-soft); }
.content td code, .content th code { white-space: nowrap; }

/* 文档配图与截图占位（直角/无圆角） */
.doc-img { margin: 0 0 18px; border: 1px solid var(--line-strong); background: var(--panel); padding: 10px; }
.doc-img img { display: block; max-width: 100%; height: auto; margin: 0 auto; }
.doc-img figcaption { font-size: 12px; color: var(--fg-dim); text-align: center; margin-top: 8px; }
.doc-img-placeholder {
  margin: 0 0 18px; min-height: 120px; display: flex; align-items: center; justify-content: center;
  border: 1px dashed var(--line-strong); background: var(--panel);
  font-size: 13px; color: var(--fg-faint); letter-spacing: 1px;
}

/* 代码块（扁平终端） */
.code-wrap { margin: 0 0 18px; border: 1px solid var(--line-strong); background: var(--code-bg); }
.code-wrap .code-head { display: flex; align-items: center; gap: 10px; background: var(--code-head); border-bottom: 1px solid var(--line); padding: 6px 12px; }
.code-wrap .code-dots { display: flex; gap: 5px; flex: none; }
.code-wrap .code-dots i { width: 8px; height: 8px; border-radius: 50%; background: var(--line-strong); }
.code-wrap .code-lang { font-family: "Cascadia Code", Consolas, monospace; font-size: 10.5px; color: var(--fg-dim); text-transform: uppercase; letter-spacing: 1px; flex: 1; }
.code-wrap .copy-btn { font-family: "Cascadia Code", Consolas, monospace; font-size: 10.5px; color: var(--fg-dim); background: var(--panel); border: 1px solid var(--line-strong); padding: 2px 10px; cursor: pointer; }
.code-wrap .copy-btn:hover { color: var(--accent); border-color: var(--accent); }
.code-wrap .copy-btn.copied { color: var(--accent); border-color: var(--accent); }
.code-wrap pre { margin: 0; padding: 14px 16px; overflow-x: auto; }
.code-wrap pre code { font-family: "Cascadia Code", Consolas, monospace; font-size: 13px; line-height: 1.7; color: var(--fg); display: block; background: none; border: none; padding: 0; }

/* 语法高亮（双主题） */
:root[data-theme="dark"] .code-wrap code .hl-comment { color: rgba(230, 235, 240, 0.36); font-style: italic; }
:root:not([data-theme="dark"]) .code-wrap code .hl-comment { color: #9aa5b0; font-style: italic; }
:root[data-theme="dark"] .code-wrap code .hl-string, :root[data-theme="dark"] .code-wrap code .hl-string-key { color: #7fd6a6; }
:root:not([data-theme="dark"]) .code-wrap code .hl-string { color: #1a7f4e; }
:root:not([data-theme="dark"]) .code-wrap code .hl-string-key { color: #b26a14; }
:root:not([data-theme="dark"]) .code-wrap code .hl-keyword { color: #7a3fbf; }
:root[data-theme="dark"] .code-wrap code .hl-keyword { color: #c9a2f0; }
:root:not([data-theme="dark"]) .code-wrap code .hl-type, .code-wrap code .hl-method { color: #1a6fa8; }
:root[data-theme="dark"] .code-wrap code .hl-type, .code-wrap code .hl-method { color: #8fc2e5; }
:root:not([data-theme="dark"]) .code-wrap code .hl-number { color: #b0561a; }
:root[data-theme="dark"] .code-wrap code .hl-number { color: #e5ae83; }
:root:not([data-theme="dark"]) .code-wrap code .hl-annotation, .code-wrap code .hl-attr { color: #b26a14; }
:root[data-theme="dark"] .code-wrap code .hl-annotation, .code-wrap code .hl-attr { color: #e0b25f; }
:root:not([data-theme="dark"]) .code-wrap code .hl-tag, .code-wrap code .hl-tag-end { color: #c0392b; }
:root[data-theme="dark"] .code-wrap code .hl-tag, .code-wrap code .hl-tag-end { color: #e08b86; }

/* ================= 预览组件（demo） ================= */

.demo { margin: 22px 0 24px; border: 1px solid var(--line-strong); background: var(--panel); }
.demo-head { display: flex; align-items: center; gap: 10px; padding: 8px 14px; background: var(--elev); border-bottom: 1px solid var(--line); }
.demo-head .play-ic { width: 16px; height: 16px; border-radius: 50%; background: var(--accent-soft); border: 1px solid var(--accent); display: inline-flex; align-items: center; justify-content: center; flex: none; }
.demo-head .play-ic::after { content: ""; border-left: 5px solid var(--accent); border-top: 3px solid transparent; border-bottom: 3px solid transparent; margin-left: 2px; }
.demo-head .demo-title { font-size: 12.5px; font-weight: 650; color: var(--fg); }
.demo-head .demo-cap { font-size: 12px; color: var(--fg-dim); flex: 1; }
.demo-body { padding: 16px; }
.demo-loading { padding: 26px 16px; color: var(--fg-faint); font-size: 12.5px; text-align: center; letter-spacing: 0.5px; }

.demo canvas, .demo svg { max-width: 100%; }

.demo .row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 14px; }
.demo button.btn { font-size: 12.5px; border: 1px solid var(--line-strong); background: var(--panel); color: var(--fg); padding: 4px 13px; cursor: pointer; }
.demo button.btn:hover { border-color: var(--accent); color: var(--accent); }
.demo button.btn.on { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-strong); font-weight: 600; }
.demo label { font-size: 12.5px; color: var(--fg-dim); }
.demo input[type="range"] { accent-color: var(--accent); width: 150px; }
.demo select { font-size: 12.5px; padding: 3px 6px; border: 1px solid var(--line-strong); background: var(--panel); color: var(--fg); }
.demo .log { font-family: "Cascadia Code", Consolas, monospace; font-size: 12px; line-height: 1.8; background: var(--code-bg); color: var(--fg); padding: 10px 12px; max-height: 190px; overflow-y: auto; white-space: pre-wrap; word-break: break-all; border: 1px solid var(--line); }
.demo .log .lg-info { color: var(--accent); }
.demo .log .lg-ok { color: var(--ok); }
.demo .log .lg-warn { color: var(--warn); }
.demo .log .lg-miss { color: var(--danger); }
.demo .log .lg-dim { color: var(--fg-faint); }
.demo .hud { font-family: "Cascadia Code", Consolas, monospace; font-size: 12px; display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 6px; margin-bottom: 14px; }
.demo .hud .cell { background: var(--code-bg); border: 1px solid var(--line); padding: 7px 10px; text-align: center; }
.demo .hud .cell b { display: block; font-size: 16px; color: var(--accent-strong); }
.demo .hud .cell span { font-size: 11px; color: var(--fg-faint); }

/* 判定窗口可视化 */
.dw-axis { position: relative; height: 118px; margin: 8px 0 6px; user-select: none; }
.dw-axis canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.dw-tick { position: absolute; bottom: 0; transform: translateX(-50%); font-family: "Cascadia Code", Consolas, monospace; font-size: 10px; color: var(--fg-faint); background: var(--panel); padding: 0 3px; }
.dw-result { display: flex; align-items: center; gap: 12px; margin: 6px 0 10px; font-size: 13px; }
.dw-badge { font-weight: 700; padding: 2px 12px; background: var(--accent); color: #fff; font-size: 13px; }
.dw-wins { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; margin-top: 4px; }
.dw-wins .cell { text-align: center; }
.dw-wins .cell b { font-size: 14px; color: var(--fg); }
.dw-wins .cell span { font-size: 10px; color: var(--fg-faint); display: block; }

/* 谱面解析画面 */
.screen { position: relative; background: var(--code-bg); overflow: hidden; width: 100%; border: 1px solid var(--line); }
.screen .bar { position: absolute; left: 40px; right: 40px; bottom: 22px; height: 7px; background: rgba(127, 127, 127, 0.15); }
.screen .bar .fill { position: absolute; left: 0; top: 0; bottom: 0; background: var(--accent); }
.screen .bar .edge { position: absolute; inset: 0; border: 1px solid rgba(127, 127, 127, 0.35); }
.screen .bars { position: absolute; left: 40px; right: 40px; top: 30px; bottom: 40px; }
.screen .lane { position: absolute; top: 0; bottom: 0; border-left: 1px solid var(--line-strong); }
.screen .note { position: absolute; background: rgba(0, 114, 206, 0.85); }
.screen .note.slide { background: rgba(0, 114, 206, 0.7); }
.screen .jl { position: absolute; left: 0; right: 0; bottom: 40px; border-top: 1px solid var(--accent); }
.screen .jl::after { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px; background: var(--accent-soft); }

/* 事件日志 */
.demo .feed { font-family: "Cascadia Code", Consolas, monospace; font-size: 12px; line-height: 1.8; max-height: 220px; overflow-y: auto; background: var(--code-bg); padding: 10px 12px; border: 1px solid var(--line); }
.demo .feed .ev { display: flex; gap: 8px; }
.demo .feed .ev .tag { flex: none; min-width: 148px; color: var(--fg); }
.demo .feed .ev .ts { color: var(--fg-faint); flex: none; }

/* 连击行为表 */
.demo table.tiny { font-size: 12.5px; margin: 10px 0 4px; }
.demo table.tiny th, .demo table.tiny td { padding: 4px 10px; border: 1px solid var(--line); }
.demo .chip { display: inline-block; font-size: 11px; font-weight: 700; padding: 1px 8px; background: var(--accent-soft); color: var(--accent-strong); }

/* ================= 底部 ================= */

.foot {
  background: var(--side); border-top: 1px solid var(--line-strong);
  padding: 10px 20px; display: flex; align-items: flex-start;
  justify-content: space-between; gap: 16px; flex-wrap: wrap;
  color: var(--fg-faint); font-size: 12px;
}
.foot .f-left { max-width: 520px; line-height: 1.7; }
.foot a { color: var(--fg-dim); }
.foot a:hover { color: var(--accent); }
.foot .f-right { text-align: right; }
.foot .f-right .links { line-height: 1.7; }
.foot .f-right .copy { margin-top: 3px; }

/* ================= 滚动渐显动效 ================= */

.fade-in { opacity: 0; transform: translateY(6px); transition: opacity 0.45s ease, transform 0.45s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .fade-in { opacity: 1; transform: none; transition: none; }
}

/* ================= 响应式 ================= */

@media (max-width: 768px) {
  /* 窄屏：shell 转纵向堆叠（左侧目录栏此时为 fixed 抽屉不占流），推荐栏落到正文下方整行显示 */
  .shell { flex-direction: column; }
  .rail-next {
    position: static; width: auto; height: auto; overflow: visible;
    border-top: 1px solid var(--line-strong);
    background: var(--side);
    padding: 16px 18px 28px;
  }
}

@media (max-width: 900px) {
  .shell { min-height: 0; }
  .side {
    position: fixed; top: 0; left: 0; bottom: 0;
    width: min(268px, 84vw); height: auto; max-height: none;
    z-index: 55; border-right: 1px solid var(--line-strong);
    box-shadow: 0 2px 18px rgba(0, 0, 0, 0.18);
    transform: translateX(-100%); visibility: hidden;
    transition: transform 0.28s ease, visibility 0s linear 0.28s;
  }
  .side.open { transform: translateX(0); visibility: visible; transition: transform 0.28s ease; }
  .nav-toggle { display: block; }
  .menubar { overflow-x: auto; }
}

@media (max-width: 768px) {
  .topbar { padding: 6px 14px; }
  .brand-logo { width: 30px; height: 30px; }
  .brand-title .h1 { font-size: 19px; }
  .brand-title .sub { font-size: 11px; }
  .menubar a { padding: 0 15px; font-size: 13.5px; }
  .content { padding: 18px 18px 44px; }
  .content .crumb { font-size: 17px; }
  .content h1.page { font-size: 17px; }
  .content h2 { font-size: 17px; margin-top: 34px; }
  .content h3 { font-size: 15px; }
  .content p, .content li { font-size: 14px; }
  .content table { font-size: 12.5px; }
  .content th, .content td { padding: 6px 10px; }
  .content blockquote { padding: 8px 12px; font-size: 13px; }
  .code-wrap pre { padding: 12px 14px; font-size: 12px; }
  .demo-head { flex-wrap: wrap; padding: 7px 12px; }
  .demo-head .demo-cap { width: 100%; font-size: 11px; }
  .demo-body { padding: 12px; }
  .dw-wins { grid-template-columns: repeat(3, 1fr); }
  .foot { padding: 8px 14px; font-size: 11.5px; }
}

/* ================= THS 在线体验 ================= */

.ths-play { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 12px; margin-top: 10px; }
.play-pane { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.ths-play textarea { width: 100%; box-sizing: border-box; height: 300px; font-family: "Cascadia Code", Consolas, monospace; font-size: 12.5px; line-height: 1.6; background: var(--code-bg); color: var(--fg); border: 1px solid var(--line); padding: 12px 14px; resize: vertical; tab-size: 4; outline: none; }
.ths-play textarea:focus { border-color: var(--accent); }
.ths-play canvas { width: 100%; aspect-ratio: 760 / 320; border: 1px solid var(--line); background: var(--code-bg); display: block; }
.play-row { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.play-row .btn { font-size: 12px; padding: 4px 10px; }
.play-log { font-family: "Cascadia Code", Consolas, monospace; font-size: 12px; background: var(--code-bg); color: var(--fg-dim); border: 1px solid var(--line); padding: 10px 12px; height: 96px; overflow-y: auto; line-height: 1.8; }
.play-log .lg-ok { color: var(--ok); }
.play-log .lg-warn { color: var(--warn); }

@media (max-width: 768px) {
  .ths-play { grid-template-columns: 1fr; }
  .ths-play textarea { height: 220px; }
}

/* ===== 更新日志折叠卡片 ===== */
.cl-card { border: 1px solid var(--line-strong); background: var(--panel); margin: 0 0 16px; }
.cl-card > summary { display: flex; align-items: baseline; gap: 14px; padding: 14px 18px; cursor: pointer; list-style: none; user-select: none; }
.cl-card > summary::-webkit-details-marker { display: none; }
.cl-card > summary h2 { margin: 0; padding: 0; border: none; font-size: 18px; flex: none; scroll-margin-top: 56px; }
.cl-card .cl-sum { flex: 1; min-width: 0; font-size: 13px; color: var(--fg-dim); line-height: 1.65; }
.cl-card .cl-arrow { flex: none; align-self: center; width: 8px; height: 8px; border-right: 2px solid var(--fg-dim); border-bottom: 2px solid var(--fg-dim); transform: rotate(45deg); transition: transform 0.15s ease; }
.cl-card[open] > summary .cl-arrow { transform: rotate(225deg); }
.cl-card > summary:hover { background: var(--accent-soft); }
.cl-card > summary:hover h2 { color: var(--accent); }
.cl-card .cl-body { border-top: 1px solid var(--line); padding: 6px 18px 16px; }

/* ================= Fabric 风格多页版：全站目录树 / 页内目录 / 上下页 ================= */

/* 全站文档目录树（左栏 .side.docs-side 内） */
.sitetree { list-style: none; margin: 0; padding: 0 0 20px; }
.sitetree .st-group > .st-group-label { display: block; padding: 12px 20px 4px; font-size: 12px; font-weight: 700; letter-spacing: 2px; color: var(--fg-dim); text-transform: none; }
.sitetree ul { list-style: none; margin: 0; padding: 0; }
.sitetree a { display: block; padding: 4px 20px 4px 34px; font-size: 13.5px; color: var(--fg); line-height: 1.55; border-left: 2px solid transparent; transition: color 0.15s ease, border-color 0.15s ease; }
.sitetree a:hover { color: var(--accent); text-decoration: none; }
.sitetree a.active { color: var(--accent); font-weight: 650; border-left-color: var(--accent); background: var(--panel); }
.sitetree .st-cat > .st-cat-label { display: flex; align-items: center; gap: 6px; padding: 6px 20px 3px 20px; font-size: 12.5px; font-weight: 650; color: var(--fg-dim); cursor: pointer; user-select: none; }
.sitetree .st-cat > .st-cat-label::before { content: ""; width: 0; height: 0; border-left: 5px solid var(--fg-faint); border-top: 4px solid transparent; border-bottom: 4px solid transparent; transition: transform 0.18s ease; flex: none; }
.sitetree .st-cat.open > .st-cat-label::before { transform: rotate(90deg); }
.sitetree .st-cat > ul { display: none; }
.sitetree .st-cat.open > ul { display: block; }
.sitetree .st-cat a { padding-left: 44px; font-size: 13px; }

/* 右栏：页内目录 */
.docs-rail .page-toc { list-style: none; margin: 0 0 18px; padding: 0; border-left: 1px solid var(--line); }
.docs-rail .page-toc a { display: block; padding: 3px 0 3px 12px; font-size: 12.5px; color: var(--fg-dim); line-height: 1.5; border-left: 2px solid transparent; margin-left: -1px; }
.docs-rail .page-toc li.l3 > a { padding-left: 24px; }
.docs-rail .page-toc li.l4 > a { padding-left: 36px; font-size: 12px; }
.docs-rail .page-toc a:hover { color: var(--accent); }

/* 上下页导航 */
.pn-nav { display: flex; justify-content: space-between; gap: 14px; margin-top: 48px; padding-top: 18px; border-top: 1px solid var(--line-strong); }
.pn-nav a { display: flex; flex-direction: column; gap: 3px; padding: 10px 14px; border: 1px solid var(--line); background: var(--side); max-width: 46%; }
.pn-nav a:hover { border-color: var(--accent); text-decoration: none; }
.pn-nav .pn-dir { font-size: 11px; letter-spacing: 2px; color: var(--fg-dim); }
.pn-nav .pn-title { font-size: 13.5px; font-weight: 600; color: var(--fg); line-height: 1.45; }
.pn-nav a:hover .pn-title { color: var(--accent); }
.pn-nav .pn-next { margin-left: auto; text-align: right; }
.pn-nav .pn-empty { visibility: hidden; }

@media (max-width: 768px) {
  .pn-nav { flex-direction: column; }
  .pn-nav a { max-width: 100%; width: 100%; }
}


/* ================= 教程阅读辅助：提示框 / 步骤 / 图示 / 卡片 ================= */
.callout { border: 1px solid var(--line-strong); border-left: 3px solid var(--accent); background: var(--side); padding: 12px 16px; margin: 0 0 18px; }
.callout .co-title { font-size: 12px; font-weight: 700; letter-spacing: 1.5px; color: var(--fg-dim); margin-bottom: 7px; }
.callout p { margin: 0 0 8px; }
.callout p:last-child, .callout ul:last-child, .callout ol:last-child { margin-bottom: 0; }
.callout ul, .callout ol { margin: 0 0 8px; }
.co-why { border-left-color: var(--accent); }
.co-check { border-left-color: var(--ok); }
.co-check .co-title { color: var(--ok); }
.co-pitfall { border-left-color: var(--warn); }
.co-pitfall .co-title { color: var(--warn); }
.co-term { border-left-color: var(--plan); }
.co-term .co-title { color: var(--plan); }
.co-note { border-left-color: var(--line-strong); }

.step-block { margin: 0 0 22px; }
ol.steps, ul.steps { list-style: none; counter-reset: step; padding-left: 0; margin: 0; }
.steps > li { counter-increment: step; position: relative; padding-left: 46px; margin: 0 0 20px; }
.steps > li::before { content: counter(step); position: absolute; left: 0; top: -1px; width: 28px; height: 28px; line-height: 26px; text-align: center; border: 1px solid var(--line-strong); background: var(--elev); color: var(--fg); font-weight: 700; font-size: 13px; }
.steps > li > p:first-child { margin-top: 2px; }

.diagram { border: 1px solid var(--line-strong); background: var(--panel); padding: 14px; margin: 0 0 18px; overflow-x: auto; }
.diagram svg { display: block; margin: 0 auto; max-width: 100%; height: auto; }
.diagram figcaption { font-size: 12px; color: var(--fg-dim); text-align: center; margin-top: 10px; }

.card-wrap { margin: 0 0 20px; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 10px; }
.tut-card { display: flex; gap: 12px; align-items: flex-start; border: 1px solid var(--line-strong); background: var(--side); padding: 12px 14px; color: var(--fg); }
.tut-card:hover { border-color: var(--accent); text-decoration: none; }
.tut-card .tut-no { flex: none; width: 28px; height: 28px; line-height: 26px; text-align: center; border: 1px solid var(--line-strong); background: var(--elev); font-size: 12px; font-weight: 700; color: var(--fg-dim); }
.tut-card .tut-body { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.tut-card .tut-title { font-size: 14px; font-weight: 650; line-height: 1.45; }
.tut-card:hover .tut-title { color: var(--accent); }
.tut-card .tut-desc { font-size: 12.5px; color: var(--fg-dim); line-height: 1.55; }
.tut-card .tut-desc code { font-size: 11.5px; padding: 1px 4px; border-radius: 3px; background: var(--elev); border: 1px solid var(--line); }


/* 分步教程：单步卡片（CSS 计数器） */
.content { counter-reset: step; }
.step-item { counter-increment: step; position: relative; padding-left: 46px; margin: 0 0 24px; }
.step-item::before { content: counter(step); position: absolute; left: 0; top: 0; width: 28px; height: 28px; line-height: 26px; text-align: center; border: 1px solid var(--line-strong); background: var(--elev); color: var(--fg); font-weight: 700; font-size: 13px; }
.step-item > .co-title { margin: 4px 0 10px; font-size: 13px; letter-spacing: 0.5px; color: var(--fg); }
.content .cb { display: inline-block; width: 14px; height: 14px; line-height: 12px; text-align: center; border: 1px solid var(--line-strong); background: var(--panel); font-size: 11px; margin-right: 7px; vertical-align: 1px; }