/* Obtainium 中文文档站 — 静态样式（三段式文档布局） */
:root {
  --bg: #f6f7fb;
  --paper: #ffffff;
  --ink: #1d2136;
  --muted: #5d6478;
  --accent: #4d4cc4;
  --accent-deep: #3a39a8;
  --accent-weak: #ededfc;
  --border: #e2e4ef;
  --code-bg: #f0f1f8;
  --radius: 10px;
  --topbar-h: 60px;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Consolas, "Courier New", monospace;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
}

/* ---------- 顶部固定导航栏 ---------- */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 22px;
  background: var(--paper);
  border-bottom: 1px solid var(--border);
  z-index: 50;
}
.menu-toggle {
  display: none;
  flex-shrink: 0;
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--paper);
  cursor: pointer;
  padding: 9px 10px;
  flex-direction: column;
  justify-content: space-between;
}
.menu-toggle .bar { display: block; height: 2px; width: 100%; background: var(--ink); border-radius: 2px; }
.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
  font-size: 17px;
}
.brand-icon { width: 28px; height: auto; border-radius: 6px; flex-shrink: 0; }
.brand-name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.download-btn {
  flex-shrink: 0;
  margin-left: auto;
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  padding: 10px 26px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(77, 76, 196, 0.35);
  white-space: nowrap;
}
.download-btn:hover { background: var(--accent-deep); }

/* ---------- 布局：固定顶栏补偿（上内边距 = 顶栏高度，补在整体容器上） ---------- */
.layout {
  display: flex;
  align-items: stretch;
  padding-top: var(--topbar-h);
  min-height: 100vh;
}

/* ---------- 侧边栏 ---------- */
.sidebar {
  width: 272px;
  flex-shrink: 0;
  position: sticky;
  top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border-right: 1px solid var(--border);
  z-index: 40;
}
.sidebar-scroll {
  flex: 1 1 auto;
  min-height: 0;              /* 弹性子项最小高度归零：滚动条由此出现 */
  overflow-y: auto;
  padding: 16px 14px 28px;
}
.search-wrap { margin-bottom: 12px; }
.nav-search {
  width: 100%;
  padding: 8px 12px;
  font-size: 14px;
  font-family: var(--sans);
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--ink);
  outline: none;
}
.nav-search:focus { border-color: var(--accent); background: var(--paper); }
.nav-home {
  display: block;
  padding: 8px 10px;
  margin-bottom: 10px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
  font-size: 14.5px;
}
.nav-home:hover { background: var(--accent-weak); }
.nav-home.active { background: var(--accent-weak); color: var(--accent-deep); }
.nav-group { margin-bottom: 6px; }
.nav-group summary {
  cursor: pointer;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  list-style: none;
  user-select: none;
}
.nav-group summary::-webkit-details-marker { display: none; }
.nav-group summary::before { content: "▸ "; color: var(--accent); }
.nav-group[open] summary::before { content: "▾ "; }
.nav-group summary:hover { background: var(--accent-weak); color: var(--accent-deep); }
.nav-links { display: flex; flex-direction: column; padding: 2px 0 6px 12px; }
.nav-link {
  display: block;
  padding: 6px 10px;
  margin: 1px 0;
  border-radius: 7px;
  text-decoration: none;
  color: var(--ink);
  font-size: 13.8px;
  line-height: 1.5;
  border-left: 3px solid transparent;
}
.nav-link:hover { background: var(--accent-weak); }
.nav-link.active {
  background: var(--accent-weak);
  color: var(--accent-deep);
  font-weight: 600;
  border-left-color: var(--accent);
}

/* ---------- 主内容 ---------- */
.main { flex: 1 1 auto; min-width: 0; }
.content {
  max-width: 860px;
  margin: 0 auto;
  padding: 30px 40px 70px;
}
.crumbs {
  font-size: 13.5px;
  color: var(--muted);
  margin-bottom: 18px;
}
.crumbs a { color: var(--accent); text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }
.crumb-sep { margin: 0 7px; color: var(--border); }
.crumb-here { color: var(--muted); }

.doc h1 {
  font-size: 27px;
  line-height: 1.4;
  margin: 6px 0 18px;
  letter-spacing: 0.2px;
}
.doc h2 {
  font-size: 20px;
  margin: 34px 0 12px;
  padding-left: 10px;
  border-left: 4px solid var(--accent);
  line-height: 1.45;
}
.doc h3 { font-size: 17px; margin: 24px 0 10px; }
.doc p { margin: 10px 0; }
.doc a { color: var(--accent); text-decoration: underline; text-decoration-color: rgba(77,76,196,0.35); text-underline-offset: 3px; }
.doc a:hover { color: var(--accent-deep); }
.doc ul, .doc ol { padding-left: 24px; margin: 10px 0; }
.doc li { margin: 6px 0; }
.doc strong { color: var(--ink); }
.doc code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--code-bg);
  padding: 1.5px 6px;
  border-radius: 5px;
  word-break: break-all;
}
.doc pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  overflow-x: auto;
  margin: 14px 0;
}
.doc pre code { background: none; padding: 0; }
.doc table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0;
  font-size: 14.5px;
  background: var(--paper);
}
.doc th, .doc td { border: 1px solid var(--border); padding: 9px 12px; text-align: left; vertical-align: top; }
.doc th { background: var(--accent-weak); font-weight: 600; }

.tip {
  background: var(--accent-weak);
  border: 1px solid rgba(77, 76, 196, 0.22);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin: 18px 0;
  font-size: 14.8px;
}
.tip strong { color: var(--accent-deep); }

/* ---------- 图片（真实截图：带宽高属性 + height:auto 防拉高变形） ---------- */
.doc img { max-width: 100%; height: auto; }
.shot, .shot-row-wrap { margin: 18px 0; }
.shot { margin: 0; }
.shot img, .shot-row img {
  display: block;
  width: 280px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--paper);
  box-shadow: 0 2px 10px rgba(29, 33, 54, 0.08);
}
.shot figcaption, .shot-row figcaption {
  font-size: 13px;
  color: var(--muted);
  margin-top: 7px;
  max-width: 280px;
  line-height: 1.55;
}
.shot-row { display: flex; flex-wrap: wrap; gap: 18px; margin: 0; }

/* ---------- 翻页 ---------- */
.pager {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin: 40px 0 26px;
}
.pager-link {
  flex: 1 1 0;
  max-width: 46%;
  display: flex;
  flex-direction: column;
  gap: 3px;
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--paper);
  padding: 11px 16px;
}
.pager-link:hover { border-color: var(--accent); }
.pager-link.next { text-align: right; margin-left: auto; }
.pager-dir { font-size: 12.5px; color: var(--muted); }
.pager-title { font-size: 14.5px; color: var(--accent-deep); font-weight: 600; line-height: 1.45; }
.pager-spacer { flex: 1 1 0; max-width: 46%; }

/* ---------- 页脚 ---------- */
.page-foot {
  margin-top: 46px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--muted);
}
.foot-legal { margin: 0 0 10px; line-height: 1.7; }
.foot-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.foot-github {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  padding: 3px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--paper);
  flex-shrink: 0;
}
.foot-github:hover { border-color: var(--accent); background: var(--accent-weak); }

/* ---------- 首页 ---------- */
.hero {
  padding: 34px 30px 30px;
  border-radius: 16px;
  background: linear-gradient(135deg, #4d4cc4 0%, #7a4fd0 55%, #9b59e0 100%);
  color: #fff;
  margin-bottom: 22px;
}
.hero h1 { font-size: 31px; margin: 0 0 10px; line-height: 1.35; }
.hero-sub { font-size: 17px; margin: 0 0 14px; opacity: 0.94; }
.hero-desc { font-size: 15px; margin: 0 0 18px; opacity: 0.88; max-width: 640px; line-height: 1.8; }
.fact-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.chip {
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  padding: 4px 13px;
  font-size: 13px;
  white-space: nowrap;
}
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.pan-entry {
  display: inline-block;
  background: #fff;
  color: var(--accent-deep);
  font-weight: 700;
  font-size: 15.5px;
  text-decoration: none;
  padding: 11px 26px;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(20, 18, 60, 0.28);
}
.pan-entry:hover { background: #f0eeff; }
.hero-ghost {
  color: #fff;
  text-decoration: none;
  font-size: 14.5px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 8px;
  padding: 10px 18px;
}
.hero-ghost:hover { background: rgba(255, 255, 255, 0.12); }
.pan-note { font-size: 13px; margin: 14px 0 0; opacity: 0.82; }

.notice {
  background: var(--paper);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin: 22px 0;
  font-size: 14.5px;
}
.notice strong { color: var(--accent-deep); display: block; margin-bottom: 6px; }
.notice p { margin: 0; color: var(--muted); line-height: 1.75; }

.idx-heading { font-size: 21px; margin: 30px 0 16px; }
.idx-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.idx-group {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.idx-group-title { font-size: 17px; margin: 0 0 6px; color: var(--ink); }
.idx-group-blurb { font-size: 13.5px; color: var(--muted); margin: 0 0 10px; line-height: 1.65; }
.idx-list { list-style: none; margin: 0; padding: 0; }
.idx-list li { margin: 0; border-top: 1px dashed var(--border); }
.idx-link {
  display: block;
  padding: 7px 2px;
  color: var(--accent-deep);
  text-decoration: none;
  font-size: 14.5px;
  line-height: 1.55;
}
.idx-link:hover { text-decoration: underline; }

.more-apps {
  margin-top: 34px;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.more-title { font-size: 17px; margin: 0 0 4px; }
.more-note { font-size: 13.5px; color: var(--muted); margin: 0 0 12px; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud a {
  display: inline-block;
  padding: 4px 13px;
  border-radius: 999px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--accent-deep);
  text-decoration: none;
  font-size: 13.5px;
}
.tag-cloud a:hover { border-color: var(--accent); background: var(--accent-weak); }

/* ---------- 移动端 ---------- */
@media (max-width: 900px) {
  .layout {
    display: block;
    padding-top: var(--topbar-h);
  }
  .menu-toggle { display: flex; }
  .brand { flex: 1 1 auto; }
  .brand-name { font-size: 15.5px; }
  .brand-icon { width: 24px; }
  .download-btn { padding: 8px 16px; font-size: 14px; box-shadow: none; }
  .topbar { padding: 0 12px; gap: 10px; }

  .sidebar {
    position: fixed;
    top: var(--topbar-h);
    bottom: 0;
    left: 0;
    height: auto;
    width: 284px;
    transform: translateX(-105%);
    transition: transform 0.24s ease;
    z-index: 70;
    border-right: 1px solid var(--border);
    box-shadow: 6px 0 24px rgba(20, 22, 44, 0.12);
  }
  body.nav-open .sidebar { transform: none; }
  body.nav-open::before {
    content: "";
    position: fixed;
    top: var(--topbar-h);
    left: 0; right: 0; bottom: 0;
    background: rgba(16, 18, 38, 0.45);
    z-index: 60;
  }

  .content { padding: 20px 16px 54px; }
  .doc h1 { font-size: 23px; }
  .doc h2 { font-size: 18.5px; }
  .hero { padding: 24px 18px 22px; }
  .hero h1 { font-size: 24px; }
  .shot img, .shot-row img { width: 210px; }
  .shot figcaption, .shot-row figcaption { max-width: 210px; }
  .idx-grid { grid-template-columns: 1fr; }
  .pager-link { max-width: 60%; }
}

@media (max-width: 480px) {
  .brand-name { font-size: 14px; }
  .download-btn { padding: 7px 12px; font-size: 13px; }
  .menu-toggle { width: 36px; height: 36px; padding: 8px 9px; }
  .brand-icon { width: 20px; }
  .content { padding: 16px 13px 46px; }
  .shot img, .shot-row img { width: 168px; }
  .shot figcaption, .shot-row figcaption { max-width: 168px; }
}