/* ═══════════════════════════════════════════════════════
   StoryClaw 文档站 — 共享样式表 v2.0
   默认：浅色模式（白底绿色主色）；html.dark 为深色模式
═══════════════════════════════════════════════════════ */

/* ── 1. CSS 变量 — 浅色（默认） ── */
:root {
  --bg:          #f8f7f4;
  --surface:     #ffffff;
  --surface-2:   #f0ede8;
  --surface-3:   #eae7e2;
  --border:      #e0dcd6;
  --border-s:    #cec9c2;
  --text:        #1e1c18;
  --text-2:      #3a3630;
  --mid:         #6a6560;
  --muted:       #9a958e;

  /* 主色：深绿（浅色背景下可读性优先） */
  --accent:      #587000;
  --accent-on:   #ffffff;
  --accent-dim:  rgba(88,112,0,.07);
  --accent-glow: rgba(88,112,0,.15);
  --brand:       #587000;
  --brand-dim:   rgba(88,112,0,.07);
  --brand-glow:  rgba(88,112,0,.15);

  --nav-bg:      rgba(248,247,244,.97);
  --sidebar-bg:  #f2f0ec;
  --toc-track:   #e0dcd6;

  --nav-h:       52px;
  --sidebar-w:   240px;
  --toc-w:       200px;
  --page-gutter: clamp(20px, 3.2vw, 48px);
  --content-max: 980px;
  --content-wide: 1080px;
  --home-max:    1180px;

  --shadow-sm:   0 1px 3px rgba(30,28,24,.07);
  --shadow-md:   0 4px 16px rgba(30,28,24,.09);

  /* 等宽字体栈：Google Fonts 不可达时回落到系统 */
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo,
               Consolas, 'Liberation Mono', 'Courier New', monospace;

  /* 语义色 */
  --tip-bg:       rgba(88,112,0,.05);
  --tip-bd:       rgba(88,112,0,.18);
  --warn-bg:      rgba(180,100,0,.05);
  --warn-bd:      rgba(180,100,0,.18);
  --warn-border:  rgba(180,100,0,.28);
  --warn-text:    #92520a;
  --info-bg:      rgba(30,100,220,.05);
  --info-border:  rgba(30,100,220,.2);
  --info-text:    #1e64dc;
  --green-bg:     rgba(20,140,125,.06);
  --green-border: rgba(20,140,125,.22);
  --green-text:   #1a8a7d;

  --tag-green-bg: rgba(26,138,125,.07);
  --tag-green-fg: #1a8a7d;
  --tag-green-bd: rgba(26,138,125,.18);
  --tag-amber-bg: rgba(180,100,0,.07);
  --tag-amber-fg: #92520a;
  --tag-amber-bd: rgba(180,100,0,.18);

  --code-bg:   rgba(88,112,0,.08);
  --code-text: #3d5200;
  --pre-bg:    #f0ede8;
}

/* ── 2. 深色模式（可选切换） ── */
html.dark {
  --bg:          #0d0d0d;
  --surface:     #141414;
  --surface-2:   #1c1c1c;
  --surface-3:   #111111;
  --border:      #333333;         /* 0x28→0x33：边框对 bg 从 1.32 提到 1.65 */
  --border-s:    #454545;         /* 0x38→0x45：次要边框进一步提亮 */
  --text:        #eeeae4;
  --text-2:      #c4c0ba;
  --mid:         #9e9a92;         /* 0x848078→0x9e9a92：mid 对 bg 提到 6.3x */
  --muted:       #807c74;         /* 0x565250→0x807c74：muted 对 bg 提到 4.5x AA */

  --accent:      #a8d44a;
  --accent-on:   #0d0d0d;
  --accent-dim:  rgba(168,212,74,.08);
  --accent-glow: rgba(168,212,74,.18);
  --brand:       #a8d44a;
  --brand-dim:   rgba(168,212,74,.08);
  --brand-glow:  rgba(168,212,74,.2);

  --nav-bg:      rgba(13,13,13,.96);
  --sidebar-bg:  #0a0a0a;
  --toc-track:   #282828;

  --shadow-sm:   0 1px 3px rgba(0,0,0,.6);
  --shadow-md:   0 4px 16px rgba(0,0,0,.5);

  --tip-bg:       rgba(168,212,74,.06);
  --tip-bd:       rgba(168,212,74,.18);
  --warn-bg:      rgba(234,179,8,.06);
  --warn-bd:      rgba(234,179,8,.18);
  --warn-border:  rgba(234,179,8,.28);
  --warn-text:    #ca8a04;
  --info-bg:      rgba(96,165,250,.06);
  --info-border:  rgba(96,165,250,.22);
  --info-text:    #60a5fa;
  --green-bg:     rgba(61,188,173,.08);
  --green-border: rgba(61,188,173,.25);
  --green-text:   #3dbcad;

  --tag-green-bg: rgba(61,188,173,.12);
  --tag-green-fg: #3dbcad;
  --tag-green-bd: rgba(61,188,173,.22);
  --tag-amber-bg: rgba(234,179,8,.1);
  --tag-amber-fg: #ca8a04;
  --tag-amber-bd: rgba(234,179,8,.2);

  --code-bg:   rgba(168,212,74,.08);
  --code-text: #a8d44a;
  --pre-bg:    #141414;
}

/* ── 3. 语言控制 ── */
html.en .lang-zh { display: none !important; }
html:not(.en) .lang-en { display: none !important; }

/* ── 4. 基础重置 ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
/* 字体栈：
   - Inter 负责英文/数字（Google Fonts 可加载时使用，不可达时回落到系统无衬线）
   - 系统英文（Apple / Windows / Linux / Android）覆盖 ASCII
   - 中文依次回落到 macOS 苹方 / iOS / Windows 雅黑 / Linux 思源
   - 不再依赖 Noto Sans SC（国内 Google Fonts 不稳定且字符包体积大） */
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
               'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei',
               'Source Han Sans SC', 'Source Han Sans CN',
               'Noto Sans SC', 'Noto Sans CJK SC', sans-serif;
  font-size: 14.5px;
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
  /* macOS / iOS Retina 下中文字形更锐利 */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  /* 禁止浏览器合成伪粗体/斜体（中文合成粗体会糊） */
  font-synthesis: none;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }
[id] { scroll-margin-top: calc(var(--nav-h) + 14px); }

/* ══════════════════════════════
   5. 顶部导航栏
══════════════════════════════ */
.top-nav {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-h); z-index: 400;
  display: flex; align-items: center;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.nav-brand {
  display: flex; align-items: center; gap: 8px;
  padding: 0 20px; height: 100%; flex-shrink: 0;
  min-width: var(--sidebar-w);
  text-decoration: none; color: inherit;
}
.nav-logo-img { height: 32px; width: auto; }
.nav-logo-text {
  font-family: var(--font-mono);
  font-weight: 700; font-size: 16px;
  color: var(--text); white-space: nowrap;
}
.nav-logo-text span { color: var(--text); }
.nav-right {
  display: flex; align-items: center; gap: 8px;
  padding: 0 16px; margin-left: auto; flex-shrink: 0;
}
.nav-cta {
  padding: 6px 16px; border-radius: 7px;
  background: var(--accent); color: var(--accent-on);
  font-size: 13px; font-weight: 600;
  cursor: pointer; white-space: nowrap;
  border: none; outline: none;
  transition: opacity .15s; text-decoration: none;
  display: inline-flex; align-items: center;
}
.nav-cta:hover { opacity: .88; }
.lang-toggle {
  display: flex; align-items: center;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 6px; padding: 2px; gap: 2px;
}
.lang-btn {
  padding: 3px 9px; border-radius: 4px;
  font-size: 11px; font-weight: 600; color: var(--muted);
  cursor: pointer; transition: all .15s; user-select: none;
}
.lang-btn.active { background: var(--accent); color: var(--accent-on); }
.theme-btn {
  width: 30px; height: 30px; border-radius: 6px;
  border: 1px solid var(--border); background: var(--surface-2);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--mid); transition: all .15s; flex-shrink: 0;
}
.theme-btn:hover { border-color: var(--accent); color: var(--accent); }
.hamburger {
  display: none; width: 30px; height: 30px; border-radius: 6px;
  border: 1px solid var(--border); background: var(--surface-2);
  align-items: center; justify-content: center;
  cursor: pointer; color: var(--mid); flex-shrink: 0;
}

/* ══════════════════════════════
   6. 左侧边栏
══════════════════════════════ */
.sidebar {
  position: fixed; top: var(--nav-h); left: 0;
  width: var(--sidebar-w);
  height: calc(100vh - var(--nav-h));
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  z-index: 300;
  transition: transform .25s cubic-bezier(.4,0,.2,1);
}
.sidebar-search {
  padding: 12px 12px 8px;
  flex-shrink: 0;
  border-bottom: 1px solid var(--border);
}
.search-input-wrap {
  display: flex; align-items: center; gap: 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 7px; padding: 7px 10px;
  transition: border-color .15s;
}
.search-input-wrap:focus-within { border-color: var(--accent); }
.search-input-wrap svg { color: var(--muted); flex-shrink: 0; }
.search-input {
  flex: 1; background: none; border: none; outline: none;
  font-size: 13px; color: var(--text); font-family: inherit;
}
.search-input::placeholder { color: var(--muted); }
.sidebar-nav {
  flex: 1; overflow-y: auto; overflow-x: hidden;
  padding: 10px 0 32px;
  scrollbar-width: thin; scrollbar-color: var(--border) transparent;
}
.sidebar-nav::-webkit-scrollbar { width: 3px; }
.sidebar-nav::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
/* 分组 */
.sg { margin-bottom: 2px; }
.sg-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 14px; cursor: pointer; user-select: none;
  font-size: 11px; font-weight: 700;
  letter-spacing: .07em; text-transform: uppercase;
  color: var(--mid); transition: color .15s;
}
.sg-head:hover { color: var(--text); }
.sg-head .ch {
  width: 13px; height: 13px; color: var(--muted);
  transition: transform .2s; flex-shrink: 0;
}
.sg.open .ch { transform: rotate(90deg); }
.sg-items {
  overflow: hidden; max-height: 0;
  transition: max-height .28s cubic-bezier(.4,0,.2,1);
}
.sg.open .sg-items { max-height: 600px; }
/* 导航项 */
.si {
  display: flex; align-items: center; gap: 7px;
  padding: 5px 14px 5px 22px;
  font-size: 13px; color: var(--mid);
  cursor: pointer; user-select: none;
  border-left: 2px solid transparent;
  transition: all .13s;
  line-height: 1.4;
  text-decoration: none;
}
.si:hover { color: var(--text-2); background: var(--surface-2); }
.si.active {
  color: var(--accent); font-weight: 600;
  border-left-color: var(--accent);
  background: var(--accent-dim);
}
.si .dot {
  width: 4px; height: 4px; border-radius: 50%;
  background: currentColor; flex-shrink: 0; opacity: .5;
}
.si.active .dot { opacity: 1; }
.si-sub {
  padding-left: 36px;
  font-size: 12.5px;
}
.si-badge {
  font-size: 9px; font-weight: 700; letter-spacing: .04em;
  padding: 1px 5px; border-radius: 3px;
  background: #f97316; color: #fff;
  margin-left: auto; flex-shrink: 0;
}

/* ══════════════════════════════
   7. 主布局
══════════════════════════════ */
.layout {
  margin-left: var(--sidebar-w);
  padding-top: var(--nav-h);
  padding-right: var(--toc-w);  /* 为固定 TOC 留出右侧空间 */
  min-height: 100vh;
}
.layout.no-toc {
  padding-right: 0;
}
.content-wrap {
  padding: 40px var(--page-gutter) 80px;
  overflow: hidden;              /* 防止截图溢出 */
}
.layout:not(.no-toc) .content-wrap > .breadcrumb,
.layout:not(.no-toc) .content-wrap > .page-title,
.layout:not(.no-toc) .content-wrap > .page-meta,
.layout:not(.no-toc) .content-wrap > .page-divider,
.layout:not(.no-toc) .content-wrap > .page-nav,
.layout:not(.no-toc) .content-wrap > .complete {
  max-width: var(--content-max);
}
.layout:not(.no-toc) .content-wrap > .content {
  max-width: var(--content-wide);
}
.layout.no-toc .content-wrap > .home-hero,
.layout.no-toc .content-wrap > .home-section,
.layout.no-toc .content-wrap > .home-divider {
  max-width: var(--home-max);
}

/* TOC 面板 — 固定在右侧，与侧边栏同级 */
.toc-panel {
  position: fixed;
  top: var(--nav-h);
  right: 0;
  width: var(--toc-w);
  height: calc(100vh - var(--nav-h));
  overflow-y: auto;
  border-left: 1px solid var(--border);
  background: var(--bg);
  z-index: 200;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.toc-panel::-webkit-scrollbar { width: 3px; }
.toc-panel::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
.toc-inner {
  padding: 32px 16px;
}
.toc-title {
  display: flex; align-items: center; gap: 7px;
  font-size: 11px; font-weight: 700;
  letter-spacing: .07em; text-transform: uppercase;
  color: var(--mid); margin-bottom: 14px; padding-bottom: 11px;
  border-bottom: 1px solid var(--border);
}
.toc-title::before {
  content: ''; display: block;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--brand); box-shadow: 0 0 6px var(--brand-glow);
  flex-shrink: 0;
}
.toc-list {
  display: flex; flex-direction: column; gap: 1px;
  border-left: 1.5px solid var(--toc-track);
}
.toc-item {
  font-size: 12px; color: var(--muted);
  cursor: pointer; padding: 4px 6px 4px 12px;
  margin-left: -1.5px;
  border-left: 2px solid transparent;
  border-radius: 0 4px 4px 0;
  transition: color .13s, border-color .13s;
  user-select: none; line-height: 1.45;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  text-decoration: none; display: block;
}
.toc-item:hover { color: var(--text-2); }
.toc-item.active { color: var(--brand); border-left-color: var(--brand); font-weight: 600; }
.toc-item.toc-h3 { padding-left: 16px; font-size: 11.5px; }
/* TOC 顶部页面标题 */
.toc-page-title {
  font-size: 12px; font-weight: 600; color: var(--accent);
  padding: 0 0 10px; margin-bottom: 10px;
  display: block; line-height: 1.45;
  text-decoration: none; cursor: pointer;
}
.toc-page-title:hover { color: var(--brand); }
@media (max-width: 1499px) {
  .toc-panel { display: none; }
  .layout { padding-right: 0; }
}
/* 移动端遮罩 */
.sidebar-overlay {
  display: none; position: fixed; inset: 0;
  z-index: 290; background: rgba(0,0,0,.55);
}

/* ══════════════════════════════
   8. 页面排版（内容区）
══════════════════════════════ */
.breadcrumb {
  display: flex; align-items: center; gap: 5px;
  font-size: 12px; color: var(--muted); margin-bottom: 16px;
  flex-wrap: wrap;
}
.breadcrumb .bc-sep { color: var(--muted); }
.breadcrumb .bc-cur { color: var(--text-2); }
.page-title {
  font-size: clamp(26px, 2.6vw, 34px); font-weight: 700;
  line-height: 1.25; letter-spacing: -.01em; margin-bottom: 10px;
}
/* em 在 page-title 里作为强调色使用，不走默认斜体 */
.page-title em { font-style: normal; color: var(--accent); font-weight: inherit; }
/* 英文版单独收紧字距、加重字重，Inter 紧排更带设计感 */
.page-title .lang-en { font-weight: 800; letter-spacing: -.025em; }
.page-title span { color: var(--accent); }
.page-meta {
  display: flex; align-items: center; gap: 6px;
  font-size: 12px; color: var(--muted); margin-bottom: 28px;
}
.page-divider { height: 1px; background: var(--border); margin-bottom: 36px; }
.content h2 {
  font-size: clamp(20px, 1.8vw, 24px); font-weight: 600; letter-spacing: 0;
  color: var(--text); margin: 44px 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 10px;
}
.content h2:first-child { margin-top: 0; padding-top: 0; border-top: none; }
.content h3, .content h3.doc-h3 {
  font-size: clamp(15px, 1.3vw, 17px); font-weight: 600; letter-spacing: 0;
  color: var(--text); margin: 30px 0 10px;
}
.content h3:first-child { margin-top: 0; }
.content p {
  font-size: 14px; color: var(--mid); line-height: 1.85; margin-bottom: 12px;
  overflow-wrap: anywhere;
}
.content p strong { color: var(--text); }
.content ul, .content ol { padding-left: 18px; margin-bottom: 12px; }
.content li {
  font-size: 14px; color: var(--mid); line-height: 1.8; margin-bottom: 3px;
  overflow-wrap: anywhere;
}
.content li strong { color: var(--text); }
.content a { color: var(--accent); }
.content a:hover { text-decoration: underline; }
.content > p,
.content > ul,
.content > ol,
.content > blockquote,
.content > .doc-tip,
.content > .doc-warn,
.content > .doc-note,
.content > .alert,
.content > .ph-notice,
.content > .qs-tip,
.content > .qs-warn,
.content > .complete {
  max-width: 820px;
}
.content blockquote {
  border-left: 3px solid var(--border-s);
  margin: 12px 0 16px; padding: 9px 14px;
  font-size: 13.5px; color: var(--text-2); line-height: 1.7;
}
.content blockquote.bq-warn { border-left-color: var(--warn-text); color: var(--warn-text); }
.content blockquote.bq-info { border-left-color: var(--accent); }

/* ══════════════════════════════
   9. 组件：截图
══════════════════════════════ */
.screenshot {
  width: 100%; max-width: min(100%, 820px); display: block;
  border-radius: 9px; border: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(0,0,0,.2);
  margin: 14px 0;
  transition: border-color .2s, box-shadow .2s;
}
.screenshot:hover { border-color: var(--border-s); box-shadow: 0 4px 20px rgba(0,0,0,.3); }
.screenshot img,
.screenshot picture img {
  max-width: 100%; width: 100%; height: auto;
  display: block; border-radius: 7px;
}
.screenshot-caption {
  text-align: center; font-size: 12px; color: var(--muted);
  margin-top: -8px; margin-bottom: 14px;
}

/* ══════════════════════════════
   10. 组件：提示框
══════════════════════════════ */
.doc-tip, .doc-warn, .doc-note {
  display: flex; gap: 12px;
  border-radius: 8px; padding: 14px 16px;
  margin: 18px 0; font-size: 13px; line-height: 1.75;
}
.doc-tip  { background: var(--tip-bg);  border: 1px solid var(--tip-bd); }
.doc-warn { background: var(--warn-bg); border: 1px solid var(--warn-bd); }
.doc-note { background: var(--surface); border: 1px solid var(--border); }
.doc-tip  .tip-label { color: var(--accent); font-weight: 700; flex-shrink: 0; }
.doc-warn .tip-label { color: var(--warn-text); font-weight: 700; flex-shrink: 0; }
.doc-note .tip-label { color: var(--mid); font-weight: 700; flex-shrink: 0; }
.tip-body { color: var(--mid); }
.tip-body p { margin: 0 0 6px; }
.tip-body p:last-child { margin: 0; }
/* alert 变体 */
.alert {
  display: flex; gap: 10px; align-items: flex-start;
  border-radius: 8px; padding: 11px 14px; margin: 13px 0;
  font-size: 13px; line-height: 1.7;
}
.alert-icon { flex-shrink: 0; margin-top: 1px; }
.alert strong { font-weight: 700; }
.alert-warn  { background: var(--warn-bg);  border: 1px solid var(--warn-border);  border-left: 3px solid var(--warn-text);  color: var(--warn-text); }
.alert-info  { background: var(--info-bg);  border: 1px solid var(--info-border);  border-left: 3px solid var(--info-text);  color: var(--info-text); }
.alert-green { background: var(--green-bg); border: 1px solid var(--green-border); border-left: 3px solid var(--green-text); color: var(--green-text); }
/* ph-notice */
.ph-notice {
  display: flex; align-items: flex-start; gap: 10px;
  background: var(--accent-dim); border: 1px solid var(--accent-glow);
  border-radius: 8px; padding: 13px 16px; margin-bottom: 24px;
}
.ph-notice svg { color: var(--accent); flex-shrink: 0; margin-top: 1px; }
.ph-notice p { margin: 0; font-size: 13px; color: var(--mid); line-height: 1.6; }
.ph-notice strong { color: var(--accent); }
/* ph-block 占位框 */
.ph-block {
  background: var(--surface); border: 1px dashed var(--border-s);
  border-radius: 10px; padding: 32px 20px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 8px; text-align: center; min-height: 110px; margin-bottom: 18px;
}
.ph-block .ph-l { font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.ph-block .ph-d { font-size: 12.5px; color: var(--muted); max-width: 320px; line-height: 1.6; margin: 0; }

/* ══════════════════════════════
   11. 组件：步骤列表
══════════════════════════════ */
.step-list { display: flex; flex-direction: column; gap: 12px; margin: 16px 0; }
.step-item {
  display: flex; gap: 14px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 9px; padding: 16px 18px;
}
.step-num {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent); border: none;
  color: var(--accent-on); font-size: 11px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; margin-top: 1px;
}
.step-title { font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.step-desc { font-size: 13.5px; color: var(--mid); line-height: 1.75; margin: 0; }
/* 流程图 */
.qs-flow {
  display: flex; align-items: center; gap: 0;
  margin: 14px 0 20px; font-size: 12px; font-weight: 500;
  color: var(--muted); flex-wrap: wrap; row-gap: 6px;
}
.qs-flow .qf-step {
  padding: 4px 10px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 5px; white-space: nowrap;
}
.qs-flow .qf-arrow { padding: 0 4px; color: var(--border-s); font-size: 11px; }
/* code row */
.qs-coderow { display: flex; align-items: center; gap: 8px; margin: 8px 0; flex-wrap: wrap; }
.qs-label { font-size: 11px; font-weight: 700; color: var(--muted); letter-spacing: .04em; white-space: nowrap; }
.qs-code {
  font-family: var(--font-mono); font-size: 13px;
  background: var(--surface-2); border: 1px solid var(--border);
  color: var(--accent); padding: 3px 10px; border-radius: 5px; letter-spacing: .02em;
}
.qs-hint { font-size: 12px; color: var(--muted); }
/* qs warn/tip */
.qs-tip {
  display: flex; align-items: flex-start; gap: 8px;
  margin: 12px 0; padding: 10px 14px;
  background: var(--accent-dim); border-radius: 7px;
  font-size: 13px; color: var(--mid); line-height: 1.7;
}
.qs-tip svg { flex-shrink: 0; margin-top: 2px; color: var(--accent); }
.qs-warn {
  display: flex; align-items: flex-start; gap: 8px;
  margin: 12px 0; padding: 11px 14px;
  background: rgba(234,179,8,.08); border: 1px solid rgba(234,179,8,.2);
  border-radius: 7px; font-size: 13px; color: var(--mid); line-height: 1.7;
}
.qs-warn svg { flex-shrink: 0; margin-top: 2px; color: #ca8a04; }
.qs-warn-list { margin: 6px 0 0 4px; padding-left: 14px; }
.qs-warn-list li { margin-bottom: 3px; }
/* FAQ 列表（开箱指南） */
.qs-faq-list {
  display: flex; flex-direction: column; gap: 0;
  margin: 14px 0; border: 1px solid var(--border);
  border-radius: 10px; overflow: hidden;
}
.qs-faq-item { padding: 14px 18px; border-bottom: 1px solid var(--border); }
.qs-faq-item:last-child { border-bottom: none; }
.qs-faq-q { font-size: 13.5px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.qs-faq-a { margin: 0; padding-left: 18px; display: flex; flex-direction: column; gap: 4px; }
.qs-faq-a li { font-size: 13px; color: var(--mid); line-height: 1.7; }
/* FAQ 页问答条目 */
.faq-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
  margin-bottom: 12px;
  background: var(--surface);
}
.faq-q {
  font-size: 14px; font-weight: 600; color: var(--text);
  margin: 0 0 8px;
  padding-left: 20px; position: relative;
}
.faq-q::before {
  content: 'Q';
  position: absolute; left: 0;
  font-size: 11px; font-weight: 700;
  color: var(--accent-on);
  background: var(--accent);
  border-radius: 4px;
  width: 16px; height: 16px;
  display: flex; align-items: center; justify-content: center;
  top: 1px; line-height: 16px; text-align: center;
}
.faq-a {
  font-size: 13.5px; color: var(--mid); line-height: 1.75;
  margin: 0; padding-left: 20px;
}

/* 共用图集：手机截图与开箱图 */
.phone-shots {
  display: flex; flex-wrap: wrap; gap: 12px;
  margin: 14px 0;
}
.phone-shot {
  flex: 0 1 220px;
  max-width: 220px;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0,0,0,.12);
  background: var(--surface);
}
.phone-shot img {
  width: 100%; height: auto; display: block;
}
.phone-shot-caption {
  font-size: 11px; color: var(--mid);
  text-align: center; padding: 5px 8px;
  background: var(--surface);
  border-top: 1px solid var(--border);
}
.unbox-gallery {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px; margin: 20px 0; max-width: min(100%, 720px);
}
.unbox-gallery-item {
  border: 1px solid var(--border); border-radius: 10px; overflow: hidden;
  background: var(--surface);
}
.unbox-gallery-item .img-wrap {
  min-height: 200px; background: var(--surface);
  display: flex; align-items: center; justify-content: center;
}
.unbox-gallery-item .img-wrap img {
  max-width: 100%; max-height: 100%;
  width: auto; height: auto;
  display: block; object-fit: contain;
}
.unbox-gallery-caption {
  padding: 8px 12px; font-size: 12px; color: var(--mid);
  background: var(--surface); text-align: center;
  border-top: 1px solid var(--border);
}

/* 快速上手概览：圆形步骤流程图 */
.qs-flow-step {
  display: flex; flex-direction: column; align-items: center;
  gap: 5px; text-align: center;
}
.qs-flow-num {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--accent-dim); border: 1.5px solid var(--accent-glow);
  color: var(--accent); font-size: 12px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.qs-flow-label { font-size: 11.5px; color: var(--mid); line-height: 1.4; }
.qs-flow-label small { font-size: 10.5px; color: var(--muted); }
.qs-flow-arr { padding: 0 8px; color: var(--border-s); font-size: 15px; line-height: 30px; }
/* 步骤卡片作为链接时的悬停效果 */
a.step-item {
  text-decoration: none; color: inherit;
  transition: border-color .18s, background .18s;
}
a.step-item:hover { border-color: var(--accent); background: var(--accent-dim); }
a.step-item:hover .step-title { color: var(--accent); }

/* 方式选择卡片 */
.method-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 16px 0 24px;
}
@media (max-width: 600px) {
  .method-cards { grid-template-columns: 1fr; }
}
.method-card {
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  background: var(--surface);
}
.method-card.method-active {
  border-color: var(--accent);
  background: var(--accent-dim);
}
.method-card.method-pending {
  opacity: .65;
}
.method-badge {
  font-size: 11px; font-weight: 700;
  letter-spacing: .04em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.method-card.method-pending .method-badge { color: var(--muted); }
.method-name {
  font-size: 14px; font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.method-desc {
  font-size: 12.5px; color: var(--mid);
  line-height: 1.6;
}

/* ph-block 即将支持变体 */
.ph-block.ph-block-upcoming {
  border-style: dashed;
  border-color: #93c5fd;
  background: #eff6ff;
}
html.dark .ph-block.ph-block-upcoming {
  border-color: #1d4ed8;
  background: rgba(29,78,216,.1);
}

/* 完成块 */
.complete {
  background: var(--green-bg); border: 1px solid var(--green-border);
  border-left: 4px solid var(--green-text);
  border-radius: 9px; padding: 20px 20px 20px 18px;
  margin-top: 36px; display: flex; gap: 14px; align-items: flex-start;
}
.complete-icon { font-size: 24px; flex-shrink: 0; }
.complete h3   { font-size: 15px; font-weight: 700; color: var(--green-text); margin-bottom: 4px; }
.complete p    { font-size: 13px; color: var(--green-text); opacity: .85; line-height: 1.7; }

/* ══════════════════════════════
   12. 组件：表格
══════════════════════════════ */
.doc-table-wrap {
  overflow-x: auto; margin: 20px 0;
  border-radius: 10px; border: 1px solid var(--border);
}
.doc-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.doc-table thead { background: var(--surface-2); }
.doc-table th {
  text-align: left; padding: 10px 16px;
  font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  color: var(--muted); border-bottom: 1px solid var(--border);
}
.doc-table td {
  padding: 12px 16px; border-bottom: 1px solid var(--border);
  color: var(--text-2); vertical-align: middle;
}
.doc-table tbody tr:last-child td { border-bottom: none; }
.doc-table tbody tr:hover td { background: var(--surface-3); }
.doc-table td strong { color: var(--accent); font-weight: 600; }

/* ══════════════════════════════
   13. 组件：代码
══════════════════════════════ */
code {
  font-family: var(--font-mono); font-size: 12px;
  background: var(--code-bg); border: 1px solid var(--border);
  padding: 2px 6px; border-radius: 4px; color: var(--code-text);
}
pre {
  background: var(--pre-bg); border: 1px solid var(--border);
  border-radius: 10px; padding: 16px 64px 16px 20px; overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12.5px; line-height: 1.9;
  color: var(--mid); margin: 14px 0; position: relative;
  white-space: pre-wrap; word-break: break-word;
}
pre code { background: none; color: inherit; padding: 0; font-size: inherit; border: none; }
.copy-btn {
  position: absolute; top: 10px; right: 12px;
  background: var(--surface-2); border: 1px solid var(--border);
  color: var(--muted); font-family: var(--font-mono);
  font-size: 9px; font-weight: 700; letter-spacing: .8px; text-transform: uppercase;
  padding: 3px 10px; border-radius: 5px; cursor: pointer; transition: all .18s;
}
.copy-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ══════════════════════════════
   14. 组件：标签与标记
══════════════════════════════ */
.tag {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 4px;
  font-size: 11px; font-weight: 600; letter-spacing: .03em;
}
.tag-green { background: var(--tag-green-bg); color: var(--tag-green-fg); border: 1px solid var(--tag-green-bd); }
.tag-amber { background: var(--tag-amber-bg); color: var(--tag-amber-fg); border: 1px solid var(--tag-amber-bd); }
.tag-blue  { background: var(--accent-dim); color: var(--accent); border: 1px solid var(--accent-glow); }
.step-n {
  font-family: var(--font-mono); font-size: 10px; font-weight: 700;
  padding: 2px 8px; border-radius: 4px; flex-shrink: 0;
  background: var(--accent-dim); color: var(--accent); border: 1px solid var(--accent-glow);
}

/* ══════════════════════════════
   15. 组件：翻页导航
══════════════════════════════ */
.page-nav {
  display: flex; gap: 10px;
  margin-top: 52px; padding-top: 24px; border-top: 1px solid var(--border);
}
.page-nav-btn,
.page-nav-prev,
.page-nav-next {
  flex: 1; display: flex; align-items: center; gap: 10px;
  padding: 12px 15px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--surface); cursor: pointer; transition: all .18s;
  max-width: 48%; text-decoration: none; color: inherit;
  flex-direction: column; align-items: flex-start;
}
.page-nav-btn:hover,
.page-nav-prev:hover,
.page-nav-next:hover { border-color: var(--accent); background: var(--accent-dim); }
.page-nav-btn:hover .pn-title,
.page-nav-prev:hover .pn-title,
.page-nav-next:hover .pn-title { color: var(--accent); }
.page-nav-btn.next,
.page-nav-next { margin-left: auto; text-align: right; align-items: flex-end; }
.pn-dir,
.pn-label { font-size: 11px; color: var(--muted); margin-bottom: 2px; }
.pn-title { font-size: 13px; font-weight: 600; color: var(--text); }
.page-nav-btn svg { width: 14px; height: 14px; color: var(--muted); flex-shrink: 0; }

/* ══════════════════════════════
   16. 首页专用：Hero
══════════════════════════════ */
.home-hero {
  padding: 24px 0 28px;
}
.home-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, .7fr);
  gap: 28px;
  align-items: start;
}
.home-hero-copy {
  position: relative;
  padding: 18px 0 8px;
}
.home-hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--accent-dim); border: 1px solid var(--accent-glow);
  border-radius: 20px; padding: 4px 14px;
  font-size: 11px; font-weight: 600; color: var(--accent); margin-bottom: 20px;
}
.home-hero h1 {
  font-size: clamp(26px, 3.8vw, 38px);
  font-weight: 700; line-height: 1.2;
  letter-spacing: -.015em; margin-bottom: 14px;
}
/* 英文版单独收紧字距、加重字重 */
.home-hero h1 .lang-en { font-weight: 800; letter-spacing: -.03em; }
.home-hero h1 em { font-style: normal; color: var(--accent); }
.home-hero-sub {
  font-size: 15px; color: var(--mid);
  line-height: 1.8; max-width: 520px; margin-bottom: 32px;
}
.home-cta-group { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.home-metrics {
  display: flex;
  margin-top: 28px;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface);
  max-width: 420px;
}
.home-metric {
  flex: 1;
  padding: 12px 16px;
  border-right: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}
.home-metric:last-child {
  border-right: none;
}
.home-metric strong {
  font-size: 20px;
  font-weight: 800;
  line-height: 1;
  color: var(--accent);
  flex-shrink: 0;
}
.home-metric span {
  font-size: 11.5px;
  color: var(--mid);
  line-height: 1.4;
}
.home-hero-panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.hero-panel-card {
  border-radius: 18px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,.78), var(--surface));
  box-shadow: var(--shadow-md);
  padding: 20px;
}
.hero-panel-card-primary {
  background:
    radial-gradient(circle at top right, var(--accent-dim), transparent 38%),
    linear-gradient(180deg, var(--surface), var(--surface-2));
}
.hero-panel-kicker {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.hero-panel-title {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 10px;
}
.hero-panel-desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--mid);
  margin-bottom: 16px;
}
.hero-panel-links {
  display: grid;
  gap: 10px;
}
.hero-panel-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 13px;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 13px;
  font-weight: 600;
  transition: transform .15s, border-color .15s, box-shadow .15s;
}
.hero-panel-link::after {
  content: '→';
  color: var(--muted);
}
.hero-panel-link:hover {
  border-color: var(--accent);
  box-shadow: 0 6px 20px rgba(0,0,0,.08);
  transform: translateY(-1px);
}
.hero-panel-mini {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.hero-panel-mini-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
}
.hero-panel-mini-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 12px;
  font-weight: 700;
  color: var(--text-2);
  white-space: nowrap;
}
.hero-panel-mini-link:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: 9px;
  background: var(--accent); color: var(--accent-on);
  font-size: 14px; font-weight: 700;
  text-decoration: none; transition: opacity .15s, transform .15s;
}
.btn-primary:hover { opacity: .9; transform: translateY(-1px); }
.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: 9px;
  background: var(--surface); border: 1px solid var(--border);
  color: var(--text-2); font-size: 14px; font-weight: 500;
  text-decoration: none; transition: all .15s;
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

/* ── 17. 首页专用：分区标题 ── */
.home-section { margin: 52px 0 0; }
.home-section-label {
  font-size: 11px; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 6px;
}
.home-section-title {
  font-size: 20px; font-weight: 600; letter-spacing: -.005em;
  color: var(--text); margin-bottom: 6px;
}
/* 英文版（class 在元素自身上，用复合选择器）加粗紧排 */
.home-section-title.lang-en { font-weight: 700; letter-spacing: -.015em; }
.home-section-sub {
  font-size: 13.5px; color: var(--mid); line-height: 1.7; margin-bottom: 20px;
}
.home-divider { height: 1px; background: var(--border); margin: 48px 0 0; }

/* ── 18. 首页专用：场景卡片 ── */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px; margin-top: 4px;
}
.scenario-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; padding: 22px 20px;
  display: flex; flex-direction: column; gap: 12px;
  text-decoration: none; color: inherit;
  transition: border-color .18s, transform .18s, box-shadow .18s;
  position: relative; overflow: hidden;
}
.scenario-card::before {
  content: ''; position: absolute;
  top: 0; left: 0; right: 0; height: 2px;
  background: var(--accent); opacity: 0;
  transition: opacity .18s;
}
.scenario-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,0,0,.25), 0 0 0 1px var(--accent-glow);
}
.scenario-card:hover::before { opacity: 1; }
.sc-icon {
  width: 44px; height: 44px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-dim); border: 1px solid var(--accent-glow);
  font-size: 22px; flex-shrink: 0;
}
.sc-title { font-size: 15px; font-weight: 700; }
.sc-desc { font-size: 13px; color: var(--mid); line-height: 1.6; flex: 1; margin: 0; }
.sc-foot {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 2px;
}
.sc-tag {
  font-size: 10px; font-weight: 700; letter-spacing: .04em;
  padding: 2px 7px; border-radius: 4px;
  background: var(--accent-dim); color: var(--accent); border: 1px solid var(--accent-glow);
}
.sc-arrow { color: var(--muted); transition: transform .18s, color .18s; }
.scenario-card:hover .sc-arrow { transform: translateX(4px); color: var(--accent); }

/* ── 19. 首页专用：快捷链接网格 ── */
.quicklink-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px; margin-top: 4px;
}
.quicklink-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 16px 18px;
  display: flex; align-items: center; gap: 12px;
  text-decoration: none; color: inherit;
  transition: border-color .15s, background .15s;
}
.quicklink-card:hover { border-color: var(--border-s); background: var(--surface-2); }
.quicklink-card:hover .ql-title { color: var(--accent); }
.ql-icon {
  width: 34px; height: 34px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  background: var(--surface-2); border: 1px solid var(--border-s);
  color: var(--mid); flex-shrink: 0; font-size: 16px;
}
.ql-title { font-size: 13px; font-weight: 600; transition: color .15s; }
.ql-sub { font-size: 11.5px; color: var(--muted); margin-top: 1px; }

/* ── 20. 平台接入卡片（现有） ── */
.platform-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px; margin: 20px 0;
}
.pc {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 22px 20px;
  display: flex; flex-direction: column; gap: 11px;
  text-decoration: none; color: inherit;
  transition: border-color .18s, transform .18s, box-shadow .18s;
}
.pc:hover {
  border-color: var(--accent); transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,.2), 0 0 0 1px var(--accent-glow);
}
.pc .pc-icon {
  width: 44px; height: 44px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: var(--surface-2); border: 1px solid var(--border-s); flex-shrink: 0;
}
.pc .pc-icon svg { width: 22px; height: 22px; }
.pc .pc-title { font-size: 14.5px; font-weight: 700; }
.pc .pc-desc { font-size: 12.5px; color: var(--mid); line-height: 1.65; flex: 1; margin: 0; }
.pc .pc-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 4px; }
.arrow { color: var(--muted); transition: transform .18s, color .18s; }
.pc:hover .arrow { transform: translateX(4px); color: var(--accent); }

/* ══════════════════════════════
   21. 响应式
══════════════════════════════ */
@media (min-width: 1200px) {
  .layout.no-toc .content-wrap > .home-hero,
  .layout.no-toc .content-wrap > .home-section,
  .layout.no-toc .content-wrap > .home-divider {
    margin-left: auto;
    margin-right: auto;
  }
  .home-hero {
    padding-top: 34px;
    padding-bottom: 56px;
  }
}
@media (min-width: 1025px) and (max-width: 1499px) {
  .content-wrap {
    padding-left: clamp(28px, 4vw, 40px);
    padding-right: clamp(28px, 4vw, 40px);
  }
}
@media (min-width: 1500px) {
  .layout:not(.no-toc) .content-wrap > .content {
    max-width: 1040px;
  }
}
@media (max-width: 1024px) {
  .nav-brand { min-width: auto; border-right: none; }
  .hamburger { display: flex; }
  .sidebar { transform: translateX(-100%); box-shadow: 4px 0 20px rgba(0,0,0,.4); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.open { display: block; }
  .layout { margin-left: 0; }
  .content-wrap { padding: 28px 20px 60px; }
  .layout .content-wrap > .breadcrumb,
  .layout .content-wrap > .page-title,
  .layout .content-wrap > .page-meta,
  .layout .content-wrap > .page-divider,
  .layout .content-wrap > .content,
  .layout .content-wrap > .page-nav,
  .layout .content-wrap > .complete,
  .layout.no-toc .content-wrap > .home-hero,
  .layout.no-toc .content-wrap > .home-section,
  .layout.no-toc .content-wrap > .home-divider {
    max-width: none;
  }
  .page-nav-btn,
  .page-nav-prev,
  .page-nav-next {
    max-width: none;
  }
  .home-hero-grid {
    grid-template-columns: 1fr;
  }
  .home-hero-copy {
    padding-top: 0;
  }
  .scenario-grid,
  .quicklink-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 640px) {
  .scenario-grid { grid-template-columns: 1fr; }
  .quicklink-grid { grid-template-columns: 1fr 1fr; }
  .platform-grid { grid-template-columns: 1fr; }
  .page-title { font-size: 22px; }
  .home-metrics {
    flex-direction: column;
    max-width: 100%;
  }
  .home-metric {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .home-metric:last-child {
    border-bottom: none;
  }
  .hero-panel-mini {
    flex-direction: column;
    align-items: flex-start;
  }
  .content h2 { margin-top: 36px; }
  .page-nav {
    flex-direction: column;
  }
  .page-nav-btn.next,
  .page-nav-next {
    margin-left: 0;
    text-align: left;
    align-items: flex-start;
  }
  .phone-shot {
    flex-basis: calc(50% - 6px);
    max-width: none;
  }
  .unbox-gallery {
    grid-template-columns: 1fr;
    max-width: 360px;
  }
  pre {
    padding: 16px 18px 16px 16px;
  }
  .copy-btn {
    position: static;
    display: inline-flex;
    margin: 0 0 10px;
  }
}
@media (max-width: 420px) {
  .quicklink-grid { grid-template-columns: 1fr; }
  .content-wrap { padding: 20px 16px 60px; }
  .nav-right { gap: 6px; padding: 0 12px; }
  .nav-cta { display: none; }
  .lang-btn { padding: 3px 7px; }
  .home-hero {
    padding-top: 8px;
  }
  .phone-shot {
    flex-basis: 100%;
  }
}

/* ══════════════════════════════
   22. 全局 Lightbox
══════════════════════════════ */
.screenshot { cursor: zoom-in; }
.phone-shot img { cursor: zoom-in; }
.img-wrap { cursor: zoom-in; }

#sc-lb-overlay {
  display: none; position: fixed; inset: 0; z-index: 9999;
  background: rgba(0,0,0,.85); align-items: center; justify-content: center;
  cursor: zoom-out;
}
#sc-lb-overlay.open { display: flex; }
#sc-lb-overlay img {
  max-width: 90vw; max-height: 90vh;
  object-fit: contain; border-radius: 8px;
  box-shadow: 0 8px 40px rgba(0,0,0,.6);
  pointer-events: none;
}
#sc-lb-close {
  position: absolute; top: 16px; right: 20px;
  font-size: 28px; color: #fff; cursor: pointer;
  line-height: 1; opacity: .8; user-select: none;
}
#sc-lb-close:hover { opacity: 1; }

/* ══════════════════════════════
   23. 打印 / PDF 导出
══════════════════════════════ */
@media print {
  /* 隐藏导航、侧栏、TOC、页脚翻页按钮 */
  .top-nav, .sidebar, .sidebar-overlay,
  .toc-panel, .page-nav, #sc-lb-overlay { display: none !important; }

  /* 布局重置：全宽、无外边距 */
  .layout { margin-left: 0 !important; }
  .content-wrap {
    max-width: 100% !important;
    padding: 20px 32px 40px !important;
    border-left: none !important;
  }

  /* 背景色、阴影在打印时去除 */
  * { box-shadow: none !important; text-shadow: none !important; }
  body, .content-wrap { background: #fff !important; }

  /* 图片限宽，避免溢出 */
  .screenshot img, .phone-shot img, .unbox-gallery-item img {
    max-width: 100% !important;
    height: auto !important;
  }

  /* 手机截图横排，打印时允许换行 */
  .phone-shots { flex-wrap: wrap !important; }
  .phone-shot  { max-width: 160px !important; }

  /* 避免标题被分页截断 */
  h1, h2, h3 { page-break-after: avoid; break-after: avoid; }
  .step-item  { page-break-inside: avoid; break-inside: avoid; }
}