/* ============================================================
   无界互联 · 官网与使用手册
   设计基调：白 + 浅蓝、扁平、黑色主按钮、语义色仅作点缀
   精修要点：
   - 更大的留白与字阶，标题用 clamp() 随视口伸缩
   - 品牌蓝紫渐变（呼应 logo）只做点缀：强调文字、步骤序号、光晕
   - 三层阴影 + 大圆角，卡片悬浮微交互
   - 克制入场动效：.reveal 元素进入视口淡入上移（依赖 site.js 与 html.js 类）
   字体权重：界面元素统一 700，正文段落 400
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
  --ink: #101114;
  --ink-2: #4b5058;
  --ink-3: #8b919b;
  --ink-4: #b6bbc3;

  --bg: #ffffff;
  --bg-soft: #f7f9fc;
  --bg-tint: #eff6ff;
  --bg-tint-2: #f2f6fd;

  --line: rgba(16, 17, 20, 0.08);
  --line-strong: rgba(16, 17, 20, 0.14);

  --black: #16181d;
  --black-hover: #2b2f36;

  --blue: #007aff;
  --blue-deep: #0060df;
  --blue-soft: #e8f2ff;
  --blue-line: #cfe3ff;

  --ok: #34c759;
  --warn: #ff9500;
  --err: #ff3b30;
  --purple: #af52de;
  --teal: #30b0c7;

  /* 品牌渐变：蓝 → 靛 → 紫，与 logo 呼应，只用于点缀 */
  --grad-brand: linear-gradient(94deg, #007aff 0%, #5e5ce6 52%, #af52de 100%);

  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;

  --shadow-1: 0 1px 2px rgba(16, 17, 20, 0.04), 0 6px 18px rgba(16, 17, 20, 0.06);
  --shadow-2: 0 2px 8px rgba(16, 17, 20, 0.05), 0 22px 48px rgba(16, 17, 20, 0.1);
  --shadow-3: 0 4px 14px rgba(16, 17, 20, 0.06), 0 40px 90px -24px rgba(16, 17, 20, 0.18);

  --maxw: 1200px;

  --ring: 0 0 0 4px rgba(0, 122, 255, 0.16);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);

  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
    "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", system-ui, sans-serif;
  --mono: "SF Mono", ui-monospace, Consolas, "Cascadia Mono", "Courier New", monospace;

  /* ---- 明/暗两套主题配套变量（暗色值见 [data-theme="dark"]） ---- */
  color-scheme: light;
  --bg-elevated: #ffffff; /* 卡片 / 面板底 */
  --bg-subtle: #f7f8fa; /* 次级面板（模拟窗口工具栏） */
  --bg-subtle-2: #fafbfc; /* 三级面板（模拟窗口侧栏） */
  --topbar-bg: rgba(255, 255, 255, 0.82);
  --topbar-bg-scrolled: rgba(255, 255, 255, 0.9);
  --code-ink: #2b3038;
  --docs-ink: #33383f;
  --scrollbar: rgba(16, 17, 20, 0.16);
  --scrollbar-hover: rgba(16, 17, 20, 0.3);
  --grid-line: rgba(16, 17, 20, 0.032);
  --dot-gray: #d9dde3;
  --dot-gray-2: #d5d9df;
  /* 高对比底：主按钮 / 侧栏选中项（暗色下翻转为浅色） */
  --accent-contrast: #16181d;
  --accent-contrast-hover: #2b2f36;
  --accent-contrast-ink: #ffffff;
  --mark-bg: rgba(255, 205, 0, 0.35);
  --gray-soft: #eef0f3;
  --gray-soft-ink: #4b5058;
  --gray-soft-line: #dfe3e8;
  --ok-soft: #e6f8ec;
  --ok-soft-ink: #1f9d4d;
  --ok-soft-line: #cdeed9;
  --warn-soft: #fff4e5;
  --warn-soft-ink: #c96a00;
  --warn-soft-line: #ffe2b8;
  --purple-soft: #f7edfd;
  --purple-soft-ink: #8e3cba;
  --teal-soft: #e4f7fa;
  --teal-soft-ink: #1d8fa3;
  --cal-note-bg: #f4f8ff;
  --cal-note-line: #cfe3ff;
  --cal-note-ink: #2b4a7a;
  --cal-warn-bg: #fff8ec;
  --cal-warn-line: #ffe2b8;
  --cal-warn-ink: #8a5300;
  --cal-ok-bg: #f1fbf4;
  --cal-ok-line: #cdeed9;
  --cal-ok-ink: #1a6b39;
  /* 整块背景（Hero / 浅色区 / 图示容器）：渐变端点随主题整体切换 */
  --hero-bg:
    radial-gradient(1000px 460px at 8% -10%, #e6f1ff 0%, rgba(230, 241, 255, 0) 62%),
    radial-gradient(900px 440px at 96% -2%, #f3ecfe 0%, rgba(243, 236, 254, 0) 64%),
    linear-gradient(180deg, #fbfdff 0%, #ffffff 74%);
  --tint-bg:
    radial-gradient(1200px 420px at 50% -12%, #eaf4ff 0%, rgba(234, 244, 255, 0) 68%),
    linear-gradient(180deg, #fbfdff 0%, #ffffff 76%);
  --figure-bg: linear-gradient(180deg, #f8fbff, #ffffff);
}

/* ---------- 深色模式：覆盖设计令牌 ----------
   html[data-theme="dark"] 由每页 <head> 的内联脚本在首帧前写入（防闪），
   顶栏按钮在浅 / 深之间切换并写入 localStorage。 */
[data-theme="dark"] {
  color-scheme: dark;

  --ink: #f1f3f7;
  --ink-2: #b9c0cb;
  --ink-3: #8a919d;
  --ink-4: #646b78;

  --bg: #0e1013;
  --bg-soft: #161920;
  --bg-tint: #101a2b;
  --bg-tint-2: #12161d;

  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);

  /* 品牌深色块（CTA 横幅 / 模拟窗口）：暗背景下提亮一档避免融底 */
  --black: #1c212b;
  --black-hover: #272d3a;

  --blue: #0a84ff;
  --blue-deep: #6cabff;
  --blue-soft: rgba(10, 132, 255, 0.16);
  --blue-line: rgba(10, 132, 255, 0.34);

  --ok: #32d74b;
  --warn: #ff9f0a;
  --err: #ff453a;
  --purple: #bf5af2;
  --teal: #40c8e0;

  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.5), 0 6px 18px rgba(0, 0, 0, 0.45);
  --shadow-2: 0 2px 8px rgba(0, 0, 0, 0.5), 0 22px 48px rgba(0, 0, 0, 0.55);
  --shadow-3: 0 4px 14px rgba(0, 0, 0, 0.5), 0 40px 90px -24px rgba(0, 0, 0, 0.7);

  --ring: 0 0 0 4px rgba(10, 132, 255, 0.28);

  --bg-elevated: #171b22;
  --bg-subtle: #191d25;
  --bg-subtle-2: #14171e;
  --topbar-bg: rgba(14, 16, 19, 0.8);
  --topbar-bg-scrolled: rgba(14, 16, 19, 0.9);
  --code-ink: #cdd5e0;
  --docs-ink: #c7cdd8;
  --scrollbar: rgba(255, 255, 255, 0.16);
  --scrollbar-hover: rgba(255, 255, 255, 0.3);
  --grid-line: rgba(255, 255, 255, 0.035);
  --dot-gray: #3b424f;
  --dot-gray-2: #3b424f;
  --accent-contrast: #f1f3f7;
  --accent-contrast-hover: #ffffff;
  --accent-contrast-ink: #14161a;
  --mark-bg: rgba(255, 205, 0, 0.26);
  --gray-soft: #232833;
  --gray-soft-ink: #adb4c0;
  --gray-soft-line: #333a47;
  --ok-soft: rgba(50, 215, 75, 0.15);
  --ok-soft-ink: #58dc72;
  --ok-soft-line: rgba(50, 215, 75, 0.32);
  --warn-soft: rgba(255, 159, 10, 0.15);
  --warn-soft-ink: #ffb954;
  --warn-soft-line: rgba(255, 159, 10, 0.32);
  --purple-soft: rgba(191, 90, 242, 0.16);
  --purple-soft-ink: #d18cf7;
  --teal-soft: rgba(64, 200, 224, 0.15);
  --teal-soft-ink: #63d4ea;
  --cal-note-bg: rgba(10, 132, 255, 0.1);
  --cal-note-line: rgba(10, 132, 255, 0.3);
  --cal-note-ink: #9ec7ff;
  --cal-warn-bg: rgba(255, 159, 10, 0.1);
  --cal-warn-line: rgba(255, 159, 10, 0.3);
  --cal-warn-ink: #ffc477;
  --cal-ok-bg: rgba(50, 215, 75, 0.1);
  --cal-ok-line: rgba(50, 215, 75, 0.3);
  --cal-ok-ink: #7fe49a;
  --hero-bg:
    radial-gradient(1000px 460px at 8% -10%, rgba(10, 132, 255, 0.16) 0%, rgba(10, 132, 255, 0) 62%),
    radial-gradient(900px 440px at 96% -2%, rgba(191, 90, 242, 0.13) 0%, rgba(191, 90, 242, 0) 64%),
    linear-gradient(180deg, #12151b 0%, #0e1013 74%);
  --tint-bg:
    radial-gradient(1200px 420px at 50% -12%, rgba(10, 132, 255, 0.12) 0%, rgba(10, 132, 255, 0) 68%),
    linear-gradient(180deg, #12151b 0%, #0e1013 76%);
  --figure-bg: linear-gradient(180deg, #171b23, #14171e);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  /* 锚点跳转时给 sticky 顶栏留出空间 */
  scroll-padding-top: 88px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: var(--blue-deep); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { margin: 0; font-weight: 700; letter-spacing: -0.02em; line-height: 1.25; color: var(--ink); }

p { margin: 0 0 14px; }

hr { border: none; border-top: 1px solid var(--line); margin: 28px 0; }

code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1px 6px;
  color: var(--code-ink);
  word-break: break-word;
}

::selection { background: rgba(0, 122, 255, 0.16); }

:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

/* 精细滚动条（不影响功能，仅桌面浏览器观感） */
::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--scrollbar);
  border-radius: 999px;
  border: 3px solid transparent;
  background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-hover); background-clip: content-box; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: inherit;
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease,
    box-shadow 0.22s ease, transform 0.22s var(--ease);
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(0); box-shadow: none; }

.btn-dark { background: var(--accent-contrast); color: var(--accent-contrast-ink); box-shadow: 0 1px 2px rgba(16, 17, 20, 0.12); }
.btn-dark:hover {
  background: var(--accent-contrast-hover);
  transform: translateY(-1px);
  box-shadow: 0 12px 28px -12px rgba(16, 17, 20, 0.5);
}

.btn-ghost { background: var(--bg-elevated); color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover {
  border-color: var(--ink);
  transform: translateY(-1px);
  box-shadow: var(--shadow-1);
}

.btn-sm { height: 36px; padding: 0 16px; font-size: 13.5px; }
.btn-lg { height: 50px; padding: 0 26px; font-size: 15.5px; }
.btn svg { flex: none; }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--topbar-bg);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}
/* 滚动后加深：由 site.js 添加 .scrolled */
.topbar.scrolled {
  background: var(--topbar-bg-scrolled);
  border-bottom-color: var(--line);
  box-shadow: 0 14px 40px -22px rgba(16, 17, 20, 0.22);
}
.topbar-in {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 68px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 16.5px;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin-right: 8px;
  white-space: nowrap;
}
.brand:hover { text-decoration: none; }
.brand img { height: 27px; width: auto; }

.topnav { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.topnav a {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-2);
  transition: background 0.16s ease, color 0.16s ease;
}
.topnav a:hover { background: var(--bg-soft); color: var(--ink); text-decoration: none; }
.topnav a.on { color: var(--ink); background: var(--bg-soft); }

.topbar-cta { display: flex; align-items: center; gap: 8px; margin-left: 14px; }

/* 语言切换（由 site.js 注入）：与顶栏导航同款胶囊，落在下载按钮左侧 */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 13px;
  margin-left: 14px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  font-size: 13.5px;
  font-weight: 700;
  color: var(--ink-2);
  white-space: nowrap;
  transition: background 0.16s ease, color 0.16s ease;
}
.lang-switch:hover { background: var(--bg-soft); color: var(--ink); text-decoration: none; }
.lang-switch svg { opacity: 0.72; }

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--r-md);
  border: 1px solid var(--line-strong);
  background: var(--bg-elevated);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  margin-left: auto;
}
/* 汉堡图标以内联 stroke 属性上色，深色下改用 --ink 覆盖 */
.nav-toggle svg { stroke: var(--ink); }

@media (max-width: 920px) {
  .topnav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--line);
    padding: 10px 16px 16px;
    margin: 0;
  }
  .topnav.open { display: flex; }
  .topnav a { padding: 12px 10px; border-radius: var(--r-md); }
  .topbar-cta { display: none; }
  /* 小屏：语言切换移到汉堡按钮左侧，藏起图标只留语言名 */
  .lang-switch { margin-left: auto; padding: 7px 11px; font-size: 12.5px; }
  .lang-switch svg { display: none; }
  /* 控件右聚为一簇：语言 → 主题 → 菜单，菜单键靠 order 排到最后，不再挂在 logo 旁 */
  .nav-toggle { display: inline-flex; margin-left: 8px; order: 9; }
}

/* ---------- 入场动效（克制版） ----------
   由 site.js 给元素加 .in 触发；无 JS（html 未加 js 类）时完全不隐藏，
   动画结束后 site.js 移除 .reveal，避免 overlay 状态影响 hover 变换。 */
.js .reveal { opacity: 0; }
.js .reveal.in { animation: rise 0.7s var(--ease) both; }
@keyframes rise {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 通用区块 ---------- */
.section { padding: 108px 0; }
.section.soft { background: var(--bg-soft); }
.section.tint { background: var(--tint-bg); }

.sec-head { max-width: 720px; margin-bottom: 46px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 28px;
  padding: 0 13px;
  border-radius: 999px;
  background: var(--blue-soft);
  border: 1px solid var(--blue-line);
  color: var(--blue-deep);
  font-size: 12.5px;
  font-weight: 700;
  margin-bottom: 16px;
}
.sec-head h2 { font-size: clamp(27px, 3.1vw, 38px); }
.sec-head .lead { margin: 16px 0 0; font-size: 16.5px; color: var(--ink-2); }

/* ---------- 首页 Hero（居中版式：文案 → 真实界面大图） ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 92px 0 96px;
  background: var(--hero-bg);
}
/* 极淡网格，向顶部聚焦、向下渐隐 */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(72% 62% at 50% 0%, #000 0%, transparent 78%);
  mask-image: radial-gradient(72% 62% at 50% 0%, #000 0%, transparent 78%);
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; }
.hero-intro { max-width: 820px; margin: 0 auto; text-align: center; }
.hero h1 {
  font-size: clamp(38px, 4.6vw, 56px);
  line-height: 1.12;
  letter-spacing: -0.035em;
  margin: 0 0 22px;
}
/* 强调文字用品牌渐变（与 logo 呼应） */
.hero h1 em {
  font-style: normal;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}
.hero .sub { font-size: 17.5px; color: var(--ink-2); max-width: 660px; margin: 0 auto; }
.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin: 32px 0 20px; }
.hero-note { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 20px; font-size: 14px; color: var(--ink-3); font-weight: 700; }
.hero-note span { display: inline-flex; align-items: center; gap: 6px; }

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px 56px;
  max-width: 780px;
  margin: 42px auto 0;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}
.hero-stats b {
  display: block;
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.hero-stats span { font-size: 13px; color: var(--ink-3); font-weight: 700; }

/* ---------- 真实界面截图（浅 / 深双主题自动切换） ----------
   .shot 内叠放两张图：默认显示 .for-light，[data-theme="dark"] 切到 .for-dark，
   与站点明暗开关同步、无闪烁；打印时固定用浅色版。--ar 控制展示裁切比例，
   图片 object-fit: cover 顶部对齐，用于裁掉截图底部的空白区域。 */
.shot { position: relative; overflow: hidden; aspect-ratio: var(--ar, 1150 / 1050); background: var(--bg-subtle); }
.shot img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: top center; }
.shot .for-dark { display: none; }
[data-theme="dark"] .shot .for-light { display: none; }
[data-theme="dark"] .shot .for-dark { display: block; }
@media print {
  .shot .for-light { display: block !important; }
  .shot .for-dark { display: none !important; }
}
/* 带边框的「窗口」容器 */
.shot.frame {
  background: var(--bg-elevated);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-3);
}

/* Hero 大图舞台：窗口背后的蓝紫光晕 + 右下悬浮窗 + 左上状态徽章 */
.hero-stage { position: relative; max-width: 1080px; margin: 54px auto 0; }
.hero-stage::before {
  content: "";
  position: absolute;
  inset: -7% -9%;
  background:
    radial-gradient(58% 52% at 62% 36%, rgba(0, 122, 255, 0.16), rgba(0, 122, 255, 0) 70%),
    radial-gradient(52% 48% at 30% 76%, rgba(175, 82, 222, 0.13), rgba(175, 82, 222, 0) 70%);
  filter: blur(10px);
  pointer-events: none;
}
.hero-shot { --ar: 1150 / 830; z-index: 1; }
/* 悬浮窗真机截图：骑在窗口右下角上（沿对角线微探），按截图原生比例 232×112 展示（不裁切），缓慢浮动 */
.hero-float {
  --ar: 232 / 112;
  position: absolute;
  right: -20px;
  bottom: -26px;
  z-index: 2;
  width: 232px;
  border-radius: 16px;
  border: 1px solid var(--line-strong);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-3);
  animation: floaty 7s ease-in-out infinite;
}
/* 左上角状态徽章：骑在窗口左上角上（沿对角线微探），与右下浮窗对角呼应，不遮挡截图内容 */
.hero-badge {
  position: absolute;
  left: -14px;
  top: -16px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 38px;
  padding: 0 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: var(--shadow-2);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-2);
  animation: floaty 7s ease-in-out infinite;
  animation-delay: -3.5s;
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; flex: none; background: var(--ok); box-shadow: 0 0 0 4px rgba(52, 199, 89, 0.16); }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-7px); }
}

/* 界面一览画廊：两列大卡，每张卡模拟一扇应用窗口——
   顶部极简窗口栏 + 截图主体 + 底部渐隐收尾（截图原生 1150×1050，裁到上部主体） */
.shots-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.shots-grid .shot { --ar: 1150 / 560; }
/* 极简窗口栏：三个圆点 + 底边分隔，让裁切截图读起来是「一扇窗口的预览」 */
.shot-card::before {
  content: "";
  position: absolute;
  z-index: 1;
  top: 0; left: 0; right: 0;
  height: 26px;
  background-color: var(--bg-subtle);
  background-image:
    radial-gradient(circle 3px at 17px 13px, var(--ink-3) 97%, rgba(0, 0, 0, 0)),
    radial-gradient(circle 3px at 31px 13px, var(--ink-3) 97%, rgba(0, 0, 0, 0)),
    radial-gradient(circle 3px at 45px 13px, var(--ink-3) 97%, rgba(0, 0, 0, 0));
  border-bottom: 1px solid var(--line);
}
.shot-card {
  position: relative;
  margin: 0;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-1);
  transition: border-color 0.2s ease, box-shadow 0.25s ease, transform 0.25s var(--ease);
}
.shot-card:hover { border-color: var(--line-strong); box-shadow: var(--shadow-2); transform: translateY(-3px); }
.shot-card .shot { margin-top: 26px; border-bottom: 1px solid var(--line); }
/* 截图底部渐隐：内容在卡片背景色里柔和收尾，避免裁切边突兀；
   双主题分别设定渐变起点色相，防止过渡带发灰 */
.shot-card .shot::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 88px;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0) 0%, var(--bg-elevated) 74%);
  pointer-events: none;
}
[data-theme="dark"] .shot-card .shot::after {
  background: linear-gradient(to bottom, rgba(23, 27, 34, 0) 0%, var(--bg-elevated) 74%);
}
.shot-card figcaption { padding: 15px 20px 17px; }
.shot-card figcaption b { display: block; font-size: 15px; }
.shot-card figcaption span { font-size: 13.5px; color: var(--ink-3); }

/* 悬浮窗截图背后的柔光（配合 .split-media.glow 使用） */
.split-media.glow { position: relative; }
.split-media.glow::before {
  content: "";
  position: absolute;
  inset: -7% -8%;
  background:
    radial-gradient(60% 55% at 42% 40%, rgba(0, 122, 255, 0.11), rgba(0, 122, 255, 0) 70%),
    radial-gradient(52% 48% at 68% 72%, rgba(175, 82, 222, 0.09), rgba(175, 82, 222, 0) 70%);
  filter: blur(10px);
  pointer-events: none;
}
.split-media.glow .shot { position: relative; }
/* 柔光左右各伸出 8%：窄视口下 .wrap 紧贴屏幕边缘会撑出横向滚动，
   故 ≤1248px 只保留上下光晕（径向渐变向内衰减，视觉几乎无差） */
@media (max-width: 1248px) {
  .split-media.glow::before { inset: -7% 0; }
}

/* 功能页分栏截图：按内容裁剪的三种比例 */
.shot-rules { --ar: 1150 / 620; }
.shot-logs { --ar: 1150 / 560; }
.shot-settings { --ar: 1150 / 720; }

/* 托盘面板 + 节点浮层：两张窄截图按真实窗口比例并排，底部对齐 */
.shot-duo { display: flex; gap: 20px; align-items: flex-end; }
.shot-duo .shot {
  border-radius: 14px;
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-3);
}
.shot-duo .shot-tray { flex: 0 0 39%; --ar: 264 / 438; }
.shot-duo .shot-nodes { flex: 1; --ar: 460 / 480; }
@media (max-width: 980px) {
  .shot-duo .shot-tray { flex-basis: 34%; }
}
@media (max-width: 640px) {
  /* 窄屏也保持与桌面一致的「一行并排 + 底部对齐」：托盘窄、节点宽，各自按窗口比例缩放 */
  .shot-duo { flex-direction: row; align-items: flex-end; gap: 12px; }
  .shot-duo .shot-tray { flex: 0 0 42%; width: auto; }
  .shot-duo .shot-nodes { flex: 1; width: auto; }
}

@media (max-width: 980px) {
  .hero { padding: 72px 0 76px; }
  .hero-stage { margin-top: 42px; }
  .hero-float { right: -14px; bottom: -18px; width: 188px; }
  .hero-badge { left: -10px; top: -14px; }
  .shots-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .hero-float, .hero-badge { display: none; }
  .shots-grid { grid-template-columns: 1fr; }
  .hero-shot { --ar: 1150 / 700; }
  .hero-stats { gap: 20px 32px; }
  .hero-stats b { font-size: 28px; }
}
@media (max-width: 480px) {
  /* 小屏避免标题断成「连接无 / 界」这类尴尬折行 */
  .hero h1 { font-size: 31px; }
}

/* ---------- 能力卡片 ---------- */
.cards { display: grid; gap: 20px; }
.cards.c3 { grid-template-columns: repeat(3, 1fr); }
.cards.c2 { grid-template-columns: repeat(2, 1fr); }
.cards.c4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 26px;
  transition: border-color 0.2s ease, box-shadow 0.25s ease, transform 0.25s var(--ease);
}
.card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-2);
  transform: translateY(-3px);
}
.card h3 { font-size: 17px; margin-bottom: 9px; }
.card p { color: var(--ink-2); font-size: 14.5px; margin: 0; }
.card .ic {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  background: var(--blue-soft);
  color: var(--blue-deep);
}
.card .ic.g { background: var(--ok-soft); color: var(--ok-soft-ink); }
.card .ic.a { background: var(--warn-soft); color: var(--warn-soft-ink); }
.card .ic.p { background: var(--purple-soft); color: var(--purple-soft-ink); }
.card .ic.t { background: var(--teal-soft); color: var(--teal-soft-ink); }
.card .ic.k { background: var(--gray-soft); color: var(--gray-soft-ink); }

@media (max-width: 980px) {
  .cards.c3, .cards.c4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .cards.c2, .cards.c3, .cards.c4 { grid-template-columns: 1fr; }
}

/* ---------- 图文左右分栏 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split.rev .split-media { order: -1; }
.split h2 { font-size: clamp(25px, 2.8vw, 34px); margin-bottom: 16px; }
.split h3 { font-size: 18px; margin-bottom: 8px; }
.split .lead { color: var(--ink-2); font-size: 16.5px; }
.split ul.ticks { list-style: none; padding: 0; margin: 22px 0 0; }
.split ul.ticks li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 12px;
  color: var(--ink-2);
}
.split ul.ticks li b { color: var(--ink); }
.split ul.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--accent-contrast);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-position: center;
  background-size: 10px;
  background-repeat: no-repeat;
}
/* 深色下主色底翻转为浅色，对勾图标同步改为深色 */
[data-theme="dark"] .split ul.ticks li::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2314161a' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
}

@media (max-width: 980px) {
  .split { grid-template-columns: 1fr; gap: 34px; }
  .split.rev .split-media { order: 0; }
  /* 单列下图示不再与文案列比高：限宽居中，避免 520×480 全宽放大过高 */
  .split .figure { max-width: 620px; margin-left: auto; margin-right: auto; }
}

/* 内嵌图示容器 */
.figure {
  background: var(--figure-bg);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 24px;
  box-shadow: var(--shadow-1);
}
.figure.plain { background: var(--bg-elevated); }
/* SVG 默认 inline，block 化消除容器底部的基线空隙（约 8px 隐式留白） */
.figure svg { display: block; }

/* ---------- 步骤 ---------- */
.steps { counter-reset: s; display: grid; gap: 14px; }
.step {
  display: flex;
  gap: 16px;
  padding: 22px;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: border-color 0.2s ease, box-shadow 0.25s ease, transform 0.25s var(--ease);
}
.step:hover { border-color: var(--line-strong); box-shadow: var(--shadow-1); transform: translateY(-2px); }
.step::before {
  counter-increment: s;
  content: counter(s);
  flex: none;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--grad-brand);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
}
.step h3 { font-size: 16px; margin-bottom: 6px; }
.step p { margin: 0; color: var(--ink-2); font-size: 14.5px; }

/* ---------- 下载卡 ---------- */
.dl-grid { display: grid; grid-template-columns: 1.25fr 0.75fr; gap: 20px; align-items: start; }
.dl-card {
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  padding: 28px;
  background: var(--bg-elevated);
  box-shadow: var(--shadow-1);
}
.dl-card .top { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.dl-card .top img { width: 46px; height: 46px; border-radius: 12px; }
.dl-card .top .n { font-size: 18px; font-weight: 700; }
.dl-card .top .m { font-size: 13px; color: var(--ink-3); font-weight: 700; }
.dl-meta {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 20px 0 22px;
  padding: 16px;
  background: var(--bg-soft);
  border-radius: var(--r-md);
}
.dl-meta div { font-size: 13px; color: var(--ink-3); font-weight: 700; }
.dl-meta b { display: block; color: var(--ink); font-size: 14.5px; }
.dl-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.dl-side { border: 1px solid var(--line); border-radius: var(--r-lg); padding: 24px; background: var(--bg-soft); }
.dl-side h3 { font-size: 15px; margin-bottom: 10px; }
.dl-side ul { margin: 0; padding-left: 18px; color: var(--ink-2); font-size: 14px; }
.dl-side li { margin-bottom: 8px; }

@media (max-width: 900px) {
  .dl-grid { grid-template-columns: 1fr; }
}

/* ---------- FAQ ---------- */
.faq { border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; background: var(--bg-elevated); }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:last-child { border-bottom: none; }
.faq summary {
  list-style: none;
  cursor: pointer;
  padding: 19px 56px 19px 24px;
  position: relative;
  font-size: 15.5px;
  font-weight: 700;
  transition: background 0.16s ease;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  position: absolute;
  right: 24px;
  top: 50%;
  width: 18px;
  height: 18px;
  margin-top: -9px;
  background: currentColor;
  opacity: 0.45;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.6' stroke-linecap='round'%3E%3Cline x1='12' y1='5' x2='12' y2='19'/%3E%3Cline x1='5' y1='12' x2='19' y2='12'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.6' stroke-linecap='round'%3E%3Cline x1='12' y1='5' x2='12' y2='19'/%3E%3Cline x1='5' y1='12' x2='19' y2='12'/%3E%3C/svg%3E") center / contain no-repeat;
  transition: transform 0.18s ease;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq summary:hover { background: var(--bg-soft); }
.faq .a { padding: 0 24px 22px; color: var(--ink-2); font-size: 14.5px; }
.faq .a p:last-child { margin-bottom: 0; }
.faq .a pre { margin: 12px 0; }

/* ---------- 更新日志 ---------- */
.log { position: relative; padding-left: 26px; }
.log::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--line);
  border-radius: 2px;
}
.log-item { position: relative; padding-bottom: 34px; }
.log-item:last-child { padding-bottom: 0; }
.log-item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 5px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--line-strong);
}
.log-item.now::before { border-color: var(--accent-contrast); background: var(--accent-contrast); box-shadow: 0 0 0 5px rgba(16, 17, 20, 0.07); }
.log-item h3 { font-size: 19px; display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.log-item .date { font-size: 13px; color: var(--ink-3); font-weight: 700; margin: 6px 0 12px; }
.log-item ul { margin: 0; padding-left: 18px; color: var(--ink-2); }
.log-item li { margin-bottom: 7px; }
.badge {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 9px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 700;
  background: var(--blue-soft);
  color: var(--blue-deep);
  border: 1px solid var(--blue-line);
}
.badge.k { background: var(--gray-soft); color: var(--gray-soft-ink); border-color: var(--gray-soft-line); }
.badge.g { background: var(--ok-soft); color: var(--ok-soft-ink); border-color: var(--ok-soft-line); }

/* ---------- 页脚 ---------- */
.foot { border-top: 1px solid var(--line); background: var(--bg-soft); padding: 60px 0 36px; margin-top: 0; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 36px; }
.foot-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 16.5px; margin-bottom: 12px; }
.foot-brand img { height: 25px; }
.foot p { color: var(--ink-3); font-size: 13.5px; max-width: 300px; }
.foot h4 { font-size: 13px; color: var(--ink-3); margin-bottom: 12px; letter-spacing: 0.02em; }
.foot ul { list-style: none; margin: 0; padding: 0; }
.foot li { margin-bottom: 9px; }
.foot a { color: var(--ink-2); font-size: 14px; font-weight: 700; }
.foot a:hover { color: var(--ink); }
.foot-bot {
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  font-size: 13px;
  color: var(--ink-3);
}
@media (max-width: 860px) {
  .foot-grid { grid-template-columns: 1fr 1fr; }
}

/* ---------- CTA 横幅 ---------- */
.cta {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(640px 320px at 88% -30%, rgba(0, 122, 255, 0.42), rgba(0, 122, 255, 0) 64%),
    radial-gradient(560px 300px at 4% 130%, rgba(175, 82, 222, 0.3), rgba(175, 82, 222, 0) 62%),
    var(--black);
  color: #fff;
  border-radius: var(--r-xl);
  padding: 60px 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
  box-shadow: var(--shadow-3);
}
.cta h2 { color: #fff; font-size: clamp(24px, 2.6vw, 32px); margin-bottom: 8px; }
.cta p { color: rgba(255, 255, 255, 0.62); margin: 0; max-width: 520px; }
.cta .btn-ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.28); }
.cta .btn-ghost:hover { border-color: #fff; box-shadow: none; }
/* CTA 横幅恒为深色底，按钮配色固定，不随主题翻转 */
.cta .btn-dark { background: #fff; color: #16181d; }
.cta .btn-dark:hover { background: #eceef1; box-shadow: 0 12px 28px -14px rgba(0, 0, 0, 0.6); }

@media (max-width: 640px) {
  .cta { padding: 40px 28px; }
}

/* ============================================================
   使用手册 /docs
   ============================================================ */
.docs-shell {
  display: grid;
  grid-template-columns: 262px minmax(0, 1fr);
  gap: 46px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 40px 24px 100px;
}

/* ---------- 手册搜索 ---------- */
.docs-search {
  position: sticky;
  top: 0;
  z-index: 6;
  padding: 0 6px 12px 0;
  background: var(--bg);
}
.docs-search .ds-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 12px;
  background: var(--bg-soft);
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  cursor: text;
  transition: border-color 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}
.docs-search .ds-bar:focus-within {
  background: var(--bg);
  border-color: var(--blue);
  box-shadow: var(--ring);
}
.docs-search svg { flex: none; color: var(--ink-3); }
.docs-search input {
  flex: 1;
  min-width: 0;
  border: none;
  outline: none;
  padding: 0;
  background: transparent;
  font: inherit;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
}
.docs-search input::placeholder { color: var(--ink-3); font-weight: 500; }
.docs-search input::-webkit-search-cancel-button { display: none; }
.docs-search kbd {
  flex: none;
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1;
  color: var(--ink-3);
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 3px 6px;
}
.docs-search .ds-bar:focus-within kbd { opacity: 0; }

/* 搜索结果面板：fixed 定位，坐标由 docs.js 计算；滚动或缩放时收起 */
.docs-hits {
  position: fixed;
  z-index: 90;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow-3);
  padding: 6px;
}
.docs-hits[hidden] { display: none; }
.docs-hits .none { padding: 14px 12px; font-size: 13.5px; line-height: 1.75; color: var(--ink-3); }
.docs-hits .hit {
  display: block;
  padding: 9px 12px 10px;
  border-radius: 10px;
  color: var(--ink);
}
.docs-hits .hit + .hit { margin-top: 1px; }
.docs-hits .hit:hover, .docs-hits .hit.on { background: var(--bg-soft); text-decoration: none; }
.docs-hits .hp { display: block; font-size: 11.5px; font-weight: 700; color: var(--ink-3); margin-bottom: 2px; }
.docs-hits .ht { display: block; font-size: 14px; font-weight: 700; }
.docs-hits .hs {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-top: 2px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-2);
}
.docs-hits mark { background: var(--mark-bg); color: inherit; border-radius: 3px; padding: 0 1px; }

.docs-side {
  position: sticky;
  top: 86px;
  align-self: start;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
  padding-right: 6px;
}
.docs-side .grp { margin-bottom: 20px; }
.docs-side .grp > .t {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ink-4);
  text-transform: uppercase;
  margin: 0 0 8px 12px;
}
.docs-side a {
  display: block;
  padding: 7px 12px;
  border-radius: 9px;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-2);
  margin-bottom: 1px;
  transition: background 0.16s ease, color 0.16s ease;
}
.docs-side a:hover { background: var(--bg-soft); color: var(--ink); text-decoration: none; }
.docs-side a.on { background: var(--accent-contrast); color: var(--accent-contrast-ink); }

/* 移动端目录折叠按钮（docs.js 注入，≤1024 显示）；
   桌面端按钮隐藏、目录体 .ds-body 常显 */
.ds-toggle { display: none; }

.docs-main { min-width: 0; }
.docs-main .crumb { font-size: 13px; color: var(--ink-3); font-weight: 700; margin-bottom: 10px; }
.docs-main h1 { font-size: clamp(30px, 3vw, 38px); margin-bottom: 12px; }
.docs-main .page-lead { font-size: 17px; color: var(--ink-2); margin-bottom: 28px; }
.docs-main h2 {
  font-size: 24px;
  margin: 44px 0 14px;
  padding-top: 6px;
}
.docs-main h3 { font-size: 17.5px; margin: 28px 0 10px; }
.docs-main h4 { font-size: 15px; margin: 20px 0 8px; }

/* 从搜索结果跳入时，目标标题短暂闪烁，帮助定位 */
.docs-main h2[id]:target,
.docs-main h3[id]:target {
  border-radius: 8px;
  animation: target-flash 1.8s ease-out 1;
}
@keyframes target-flash {
  0% { background: rgba(0, 122, 255, 0.16); box-shadow: 0 0 0 8px rgba(0, 122, 255, 0.16); }
  55% { background: rgba(0, 122, 255, 0.11); box-shadow: 0 0 0 8px rgba(0, 122, 255, 0.11); }
  100% { background: transparent; box-shadow: 0 0 0 8px transparent; }
}
.docs-main p, .docs-main li { color: var(--docs-ink); }
.docs-main ul, .docs-main ol { padding-left: 22px; margin: 0 0 16px; }
.docs-main li { margin-bottom: 7px; }
.docs-main li > ul, .docs-main li > ol { margin-top: 7px; }

.docs-main table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 20px;
  font-size: 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}
.docs-main th, .docs-main td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.docs-main thead th { background: var(--bg-soft); font-size: 12.5px; color: var(--ink-2); font-weight: 700; white-space: nowrap; }
.docs-main tbody tr:last-child td { border-bottom: none; }
.docs-main td code { white-space: nowrap; }

/* 宽表格横向滚动容器（docs.js 注入）：窄屏可横滑查看，宽屏无滚动条、视觉不变 */
.table-wrap { overflow-x: auto; margin: 0 0 20px; border-radius: var(--r-md); -webkit-overflow-scrolling: touch; }
.table-wrap table { margin: 0; }

/* 手册正文插图：浅 / 深双主题截图随站点主题切换（.shot 机制同首页）；
   截图统一按 1150 / 620 裁切、顶部对齐，小屏略放高避免细节过小 */
.doc-shot { margin: 0 0 34px; }
.doc-shot .shot { --ar: 1150 / 620; }
/* 设置页：多露出一段「主题定制」，避免正好裁在卡片中间 */
.doc-shot.tall .shot { --ar: 1150 / 740; }
.doc-shot figcaption { margin-top: 10px; font-size: 13px; color: var(--ink-3); line-height: 1.7; }
@media (max-width: 760px) {
  .doc-shot .shot { --ar: 1150 / 760; }
  .doc-shot.tall .shot { --ar: 1150 / 880; }
}

.docs-main pre {
  background: #14161a;
  color: #e6e9ee;
  border-radius: var(--r-md);
  padding: 16px 18px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.65;
  margin: 0 0 20px;
}
.docs-main pre code { background: none; border: none; padding: 0; color: inherit; font-size: inherit; }

.cal {
  display: flex;
  gap: 12px;
  padding: 16px 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: var(--bg-soft);
  margin: 0 0 20px;
  font-size: 14.5px;
  color: var(--ink-2);
}
.cal b { display: block; color: var(--ink); margin-bottom: 2px; }
.cal::before {
  content: "";
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  background: currentColor;
  -webkit-mask: center / contain no-repeat;
  mask: center / contain no-repeat;
}
.cal.note { background: var(--cal-note-bg); border-color: var(--cal-note-line); color: var(--cal-note-ink); }
.cal.note::before { -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cline x1='12' y1='11' x2='12' y2='16'/%3E%3Ccircle cx='12' cy='7.6' r='1.1' fill='%23000' stroke='none'/%3E%3C/svg%3E"); mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cline x1='12' y1='11' x2='12' y2='16'/%3E%3Ccircle cx='12' cy='7.6' r='1.1' fill='%23000' stroke='none'/%3E%3C/svg%3E"); }
.cal.warn { background: var(--cal-warn-bg); border-color: var(--cal-warn-line); color: var(--cal-warn-ink); }
.cal.warn::before { -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M10.3 3.9 1.8 18a2 2 0 0 0 1.7 3h17a2 2 0 0 0 1.7-3L13.7 3.9a2 2 0 0 0-3.4 0z'/%3E%3Cline x1='12' y1='9' x2='12' y2='14'/%3E%3Ccircle cx='12' cy='17.4' r='1.1' fill='%23000' stroke='none'/%3E%3C/svg%3E"); mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M10.3 3.9 1.8 18a2 2 0 0 0 1.7 3h17a2 2 0 0 0 1.7-3L13.7 3.9a2 2 0 0 0-3.4 0z'/%3E%3Cline x1='12' y1='9' x2='12' y2='14'/%3E%3Ccircle cx='12' cy='17.4' r='1.1' fill='%23000' stroke='none'/%3E%3C/svg%3E"); }
.cal.ok { background: var(--cal-ok-bg); border-color: var(--cal-ok-line); color: var(--cal-ok-ink); }
.cal.ok::before { -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E"); mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E"); }
.cal p:last-child { margin-bottom: 0; }
.cal ul { margin: 8px 0 0; }

.docs-pager {
  display: flex;
  gap: 14px;
  margin-top: 54px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
.docs-pager a {
  flex: 1;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 14px 18px;
  font-weight: 700;
  color: var(--ink);
  font-size: 14.5px;
  transition: border-color 0.18s ease, box-shadow 0.22s ease, transform 0.22s var(--ease);
}
.docs-pager a:hover { border-color: var(--ink); text-decoration: none; box-shadow: var(--shadow-1); transform: translateY(-1px); }
.docs-pager a span { display: block; font-size: 12px; color: var(--ink-3); font-weight: 700; margin-bottom: 2px; }
.docs-pager .next { text-align: right; }

/* 本页目录：仅宽屏时作为第三列显示 */
.docs-toc { display: none; }
@media (min-width: 1360px) {
  .docs-shell {
    grid-template-columns: 262px minmax(0, 1fr) 200px;
    max-width: 1400px;
  }
  .docs-toc {
    display: block;
    position: sticky;
    top: 86px;
    align-self: start;
    max-height: calc(100vh - 110px);
    overflow-y: auto;
  }
  .docs-toc .t { font-size: 12.5px; font-weight: 700; color: var(--ink); margin: 0 0 10px 10px; }
  .docs-toc a {
    display: block;
    padding: 5px 10px;
    border-left: 2px solid var(--line);
    font-size: 13px;
    font-weight: 600;
    color: var(--ink-3);
    transition: color 0.15s ease, border-color 0.15s ease;
  }
  .docs-toc a:hover { color: var(--ink); text-decoration: none; }
  .docs-toc a.on { color: var(--blue-deep); border-left-color: var(--blue); }
}

@media (max-width: 1024px) {
  .docs-shell { grid-template-columns: 1fr; gap: 0; padding-top: 20px; }
  .docs-side {
    position: static;
    max-height: none;
    overflow: visible;
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    padding: 14px;
    margin-bottom: 28px;
    background: var(--bg-elevated);
  }
  .docs-side .grp { margin-bottom: 12px; }
  .docs-side a { padding: 9px 12px; }
  .docs-search { position: static; }
  /* 目录默认收起：搜索框常驻，点按钮才展开目录，不让 18 项菜单挤占正文首屏 */
  .ds-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    margin-top: 2px;
    padding: 11px 12px;
    background: var(--bg-soft);
    border: 1px solid var(--line-strong);
    border-radius: var(--r-md);
    font: inherit;
    font-size: 14px;
    font-weight: 700;
    color: var(--ink);
    cursor: pointer;
  }
  .ds-toggle svg { color: var(--ink-3); transition: transform 0.2s ease; }
  .docs-side.open .ds-toggle svg { transform: rotate(180deg); }
  .ds-body { display: none; margin-top: 12px; }
  .docs-side.open .ds-body { display: block; }
  /* 触控目标尺寸：顶栏 logo、页脚链接、正文列表链接抬高到可轻松点按 */
  .brand { padding: 6px 0; }
  .foot li { margin-bottom: 0; }
  .foot a { display: inline-block; padding: 9px 0; }
  .docs-main ul li > a { display: inline-block; padding: 7px 0; }
  .docs-main ul li { margin-bottom: 6px; }
  /* 输入框 ≥ 16px 防 iOS 聚焦时自动放大页面；「/」快捷键提示仅对实体键盘有意义 */
  .docs-search input { font-size: 16px; }
  .docs-search kbd { display: none; }
}

@media (max-width: 640px) {
  /* 顶栏收紧一档，省出首屏高度；下拉菜单同步上移 */
  .topbar-in { height: 58px; }
  .topnav { top: 58px; }
  /* 手册表格收紧：多数表格不横滑即可放下，个别宽表由 .table-wrap 兜底 */
  .docs-main table { font-size: 13px; }
  .docs-main th, .docs-main td { padding: 8px 10px; }
  .docs-main thead th { font-size: 12px; }
  /* 版本徽章 11.5px 在手机屏幕上偏小，抬一档到 12px */
  .badge { font-size: 12px; }
}

@media (max-width: 380px) {
  /* 极窄屏：顶栏只留 logo 图形，文字让位给导航与语言开关 */
  .brand span { display: none; }
}

/* ---------- 404 ---------- */
.err-page { min-height: 62vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 60px 24px; }
.err-page .code {
  font-size: clamp(84px, 13vw, 132px);
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 1;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}
.err-page h1 { font-size: 28px; margin: 16px 0 10px; }
.err-page p { color: var(--ink-2); max-width: 460px; }
.err-page .acts { display: flex; gap: 12px; margin-top: 26px; flex-wrap: wrap; justify-content: center; }

/* ---------- 小屏统一收窄 ---------- */
@media (max-width: 640px) {
  .section { padding: 72px 0; }
  .sec-head { margin-bottom: 34px; }
  .foot { padding: 44px 0 30px; }
}

/* ---------- 动效降级：系统开启「减少动态效果」时全部取消 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
  .js .reveal { opacity: 1; }
  .js .reveal.in { animation: none; }
}

/* ---------- 打印（手册可打印留存） ---------- */
@media print {
  /* 打印一律按亮色渲染：深色主题下避免白纸印浅字 */
  :root, [data-theme="dark"] {
    --ink: #101114;
    --ink-2: #4b5058;
    --ink-3: #8b919b;
    --docs-ink: #33383f;
    --bg: #ffffff;
    --bg-soft: #f7f9fc;
    --bg-elevated: #ffffff;
    --line: rgba(16, 17, 20, 0.08);
    --line-strong: rgba(16, 17, 20, 0.14);
  }
  .topbar, .docs-side, .foot, .docs-pager, .cta, .docs-toc { display: none !important; }
  .docs-shell { grid-template-columns: 1fr; padding: 0; max-width: none; }
  body { font-size: 12pt; }
  .docs-main pre { background: #f4f4f4; color: #111; border: 1px solid #ddd; }
  a { color: #000; }
  .reveal { opacity: 1 !important; animation: none !important; }
}

/* ---------- 深色模式：内联 SVG 示意图适配 ----------
   首页的流程图 / 分流图是内联 SVG，用 presentation attribute（fill/stroke="…"）
   上色，无法直接引用 CSS 变量；深色下用属性选择器覆盖（属性优先级最低，可安全覆盖）。 */
[data-theme="dark"] svg rect[fill="#fff"] { fill: var(--bg-elevated); }
[data-theme="dark"] svg rect[fill="#101114"],
[data-theme="dark"] svg circle[fill="#101114"] { fill: #262c38; } /* 深色卡：暗底上提亮一档避免融底 */
[data-theme="dark"] svg [stroke="rgba(16,17,20,.14)"] { stroke: var(--line-strong); }
[data-theme="dark"] svg [stroke="rgba(16,17,20,.08)"] { stroke: var(--line); }
[data-theme="dark"] svg text[fill="#101114"] { fill: var(--ink); }
[data-theme="dark"] svg text[fill="#8b919b"] { fill: var(--ink-3); }
[data-theme="dark"] svg text[fill="#4b5058"] { fill: var(--ink-2); }
[data-theme="dark"] svg text[fill="#0060df"] { fill: var(--blue-deep); }
[data-theme="dark"] svg [fill="#b6bbc3"] { fill: var(--ink-4); }
[data-theme="dark"] svg [stroke="#b6bbc3"] { stroke: var(--ink-4); }
[data-theme="dark"] svg rect[fill="#e8f2ff"] { fill: var(--blue-soft); }
[data-theme="dark"] svg [stroke="#cfe3ff"] { stroke: var(--blue-line); }
[data-theme="dark"] svg rect[fill="#fff4e5"] { fill: var(--warn-soft); }
[data-theme="dark"] svg [stroke="#ffe2b8"] { stroke: var(--warn-soft-line); }
[data-theme="dark"] svg text[fill="#8a5300"] { fill: var(--warn-soft-ink); }
[data-theme="dark"] svg rect[fill="#eef0f3"] { fill: var(--gray-soft); }
[data-theme="dark"] svg [stroke="#dfe3e8"] { stroke: var(--gray-soft-line); }

/* ---------- 主题切换按钮（由 site.js 注入，与语言切换同排） ---------- */
.theme-switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  padding: 0;
  margin-left: 10px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--bg-elevated);
  color: var(--ink-2);
  cursor: pointer;
  transition: background 0.16s ease, color 0.16s ease;
}
.theme-switch:hover { background: var(--bg-soft); color: var(--ink); }
.theme-switch svg { display: block; }
@media (max-width: 920px) {
  .theme-switch { width: 36px; height: 36px; margin-left: 8px; }
}