/* =========================================================================
   LLM Gateway Console — 样式实现
   对照规范：DESIGN.md（Apple 设计语言 · 控制台密度适配版）

   分层：令牌层 → 基础层 → 组件层 → 响应式 → 可访问性
   铁律：
     1. 组件内不出现裸色值，一律引用令牌（这是深色主题完整的前提）；
     2. 卡片/按钮/表格/文字**不加阴影**，阴影只代表"浮在页面之上"；
     3. 字重阶梯只有 300 / 400 / 600 / 700，禁用 500；
     4. 按下态统一 transform: scale(0.95)，不用变色表达按下；
     5. 圆角只用 8 / 11 / 18 / 9999，中间值不出现。
   ========================================================================= */

/* =========================== 1. 令牌层 =========================== */
:root {
  /* —— 品牌与交互（全站唯一的交互色）—— */
  --color-primary: #0066cc;
  --color-primary-focus: #0071e3;
  --color-primary-on-dark: #2997ff;
  --color-primary-soft: rgba(0, 102, 204, .08);
  --color-primary-ring: rgba(0, 102, 204, .14);

  /* —— 表面 —— */
  --color-page: #f5f5f7;
  --color-canvas: #ffffff;
  --color-canvas-parchment: #f5f5f7;
  --color-surface-pearl: #fafafc;
  --color-surface-tile-1: #272729;
  --color-surface-tile-2: #2a2a2c;
  --color-surface-tile-3: #252527;
  --color-surface-black: #000000;

  /* —— 文字 —— */
  --color-ink: #1d1d1f;
  --color-ink-muted-80: #333333;
  --color-ink-muted-48: #6e6e73;
  --color-on-dark: #f5f5f7;
  --color-on-dark-muted: #a1a1a6;

  /* —— 描边 —— */
  --color-hairline: #e0e0e0;
  --color-hairline-strong: #cccccc;
  --color-divider-soft: rgba(0, 0, 0, .04);

  /* —— 语义色：**仅用于状态编码**，绝不用于按钮/链接/焦点 —— */
  --color-success: #1f7a35;
  --color-success-soft: #e6f4ea;
  --color-warning: #b25000;
  --color-warning-soft: #fdf3e6;
  --color-error: #d70015;
  --color-error-soft: #fdecee;
  --color-info: #0066cc;
  --color-info-soft: #e8f1fc;

  /* —— 图表：语义命名（不用位置编号，避免换主题时"成功变警告"这类错配）—— */
  --chart-primary: #0066cc;
  --chart-success: #1f7a35;
  --chart-warning: #b25000;
  --chart-error: #d70015;
  --chart-neutral: #a1a1a6;
  --chart-grid: #e8e8ed;
  --chart-axis: #86868b;
  --chart-label: #6e6e73;

  /* —— 字体 —— */
  --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-text: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  /* —— 圆角（只用四档）—— */
  --rounded-sm: 8px;
  --rounded-md: 11px;
  --rounded-lg: 18px;
  --rounded-pill: 9999px;

  /* —— 间距（基数 8）—— */
  --spacing-xxs: 4px;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  /* 卡片之间的沟槽（DESIGN.md §5：KPI 网格 12px、卡片之间 18px）。
     18 不在 8 基数序列里，因此独立成令牌而不是裸值。 */
  --gap-card: 18px;

  /* —— 层级（阴影只给浮动层）—— */
  --shadow-none: none;
  --shadow-float: 0 4px 20px rgba(0, 0, 0, .10), 0 1px 3px rgba(0, 0, 0, .06);
  --shadow-sheet: 0 24px 60px rgba(0, 0, 0, .18);

  /* —— 动效 —— */
  --ease-standard: cubic-bezier(.4, 0, .2, 1);
  --ease-sheet: cubic-bezier(.32, .72, 0, 1);
  --dur-fast: 140ms;
  --dur: 220ms;
  --dur-sheet: 320ms;

  /* —— 毛玻璃 —— */
  --blur-sticky: blur(20px) saturate(180%);
  --blur-overlay: blur(6px);
  --blur-glass: blur(30px);

  /* —— 布局 —— */
  --sidebar-w: 232px;
  --content-max: 1360px;
  --main-pad-x: 30px;
  --main-pad-y: 26px;
  --topbar-bg: rgba(245, 245, 247, .72);

  /* —— 玻璃态（透出云雾背景）—— */
  --color-sidebar-glass: rgba(255, 255, 255, .62);
}

/* ---------------------------- 深色主题 ---------------------------- */
[data-theme="dark"] {
  --color-primary: #2997ff;
  --color-primary-focus: #4aa8ff;
  --color-primary-on-dark: #2997ff;
  --color-primary-soft: rgba(41, 151, 255, .14);
  --color-primary-ring: rgba(41, 151, 255, .24);

  --color-page: #1d1d1f;
  --color-canvas: #272729;
  --color-canvas-parchment: #1d1d1f;
  --color-surface-pearl: #2a2a2c;
  --color-surface-tile-2: #2a2a2c;
  --color-surface-tile-3: #252527;
  --topbar-bg: rgba(29, 29, 31, .72);

  --color-ink: #f5f5f7;
  --color-ink-muted-80: #cccccc;
  --color-ink-muted-48: #a1a1a6;

  --color-hairline: rgba(255, 255, 255, .10);
  --color-hairline-strong: rgba(255, 255, 255, .18);
  --color-divider-soft: rgba(255, 255, 255, .06);

  --color-success: #30d158;
  --color-success-soft: #12301c;
  --color-warning: #ff9f0a;
  --color-warning-soft: #33230a;
  --color-error: #ff6961;
  --color-error-soft: #3a1417;
  --color-info: #2997ff;
  --color-info-soft: #132436;

  --chart-primary: #2997ff;
  --chart-success: #30d158;
  --chart-warning: #ff9f0a;
  --chart-error: #ff6961;
  --chart-neutral: #6e6e73;
  --chart-grid: rgba(255, 255, 255, .08);
  --chart-axis: #86868b;
  --chart-label: #a1a1a6;

  --shadow-float: 0 6px 24px rgba(0, 0, 0, .46);
  --shadow-sheet: 0 28px 68px rgba(0, 0, 0, .62);

  --color-sidebar-glass: rgba(29, 29, 31, .62);
}

/* =========================== 2. 基础层 =========================== */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

html, body { margin: 0; height: 100%; }

body {
  font-family: var(--font-text);
  font-size: 15px;            /* {typography.body} · 控制台密度档 */
  line-height: 1.47;
  letter-spacing: -.24px;
  background: var(--color-page);
  color: var(--color-ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--dur) var(--ease-standard),
              color var(--dur) var(--ease-standard);
}

::selection { background: var(--color-primary-soft); }

code, .mono {
  font-family: var(--font-mono);
  font-size: .92em;
}

/* 数字等宽：表格与 KPI 刷新时列不会跳动 */
td, th, .kpi .val { font-variant-numeric: tabular-nums; }

* { scrollbar-width: thin; scrollbar-color: var(--color-hairline-strong) transparent; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--color-hairline-strong); border-radius: var(--rounded-pill);
  border: 3px solid transparent; background-clip: content-box;
}

/* 焦点环：2px Focus Blue + 2px 偏移（Apple 规范） */
:focus-visible {
  outline: 2px solid var(--color-primary-focus);
  outline-offset: 2px;
  border-radius: var(--rounded-sm);
}

/* =========================== 2.5 云雾背景 =========================== */
/* 彩色云雾：5 个大尺寸色块 + 高斯模糊 + 错峰漂移动画。
   登录页 vibrant 版（浓烈）/ 主界面 subtle 版（氛围），共用 keyframes。 */
.aurora {
  position: fixed; inset: 0; overflow: hidden;
  pointer-events: none;
}
.aurora-blob {
  position: absolute;
  border-radius: 50%;
  will-change: transform;
}

/* 五朵云：位置 / 大小 / 颜色 / 动画（login 与 app 共用同一组 DOM） */
.aurora-blob:nth-child(1) {
  width: 55vmax; height: 55vmax;
  background: #0066cc;
  top: -20%; left: -15%;
  animation: cloud-a 50s ease-in-out infinite alternate;
}
.aurora-blob:nth-child(2) {
  width: 45vmax; height: 45vmax;
  background: #7b2ff7;
  bottom: -18%; right: -12%;
  animation: cloud-b 62s ease-in-out infinite alternate;
}
.aurora-blob:nth-child(3) {
  width: 40vmax; height: 40vmax;
  background: #00c9ff;
  top: 25%; left: 45%;
  animation: cloud-c 55s ease-in-out infinite alternate;
}
.aurora-blob:nth-child(4) {
  width: 35vmax; height: 35vmax;
  background: #ff6ec7;
  bottom: 5%; left: 10%;
  animation: cloud-a 45s ease-in-out infinite alternate-reverse;
}
.aurora-blob:nth-child(5) {
  width: 28vmax; height: 28vmax;
  background: #00ffc8;
  top: 5%; right: 15%;
  animation: cloud-b 48s ease-in-out infinite alternate-reverse;
}

/* 登录页：浓烈云雾 */
.login-aurora { z-index: 0; }
.login-aurora .aurora-blob { filter: blur(70px); opacity: .55; }

/* 主界面：云雾氛围 + 鼠标视差 */
.app-aurora { z-index: 0; }
.app-aurora .aurora-blob { filter: blur(100px); opacity: .12; }
[data-theme="dark"] .app-aurora .aurora-blob { opacity: .20; }
/* 视差：JS 写 translate（CSS Transforms L2 独立属性，与 transform 动画叠加），
   transition 让跟随有粘性延迟，不是硬跟 */
.app-aurora .aurora-blob { transition: translate .5s ease-out; }

/* 云雾飘动轨迹：三条不同路径 × alternate 来回 × 不同周期 = 永不同步 */
@keyframes cloud-a {
  0%   { transform: translate(0, 0) scale(1); }
  33%  { transform: translate(12vw, 8vh) scale(1.1); }
  66%  { transform: translate(-6vw, 18vh) scale(.94); }
  100% { transform: translate(8vw, 4vh) scale(1.05); }
}
@keyframes cloud-b {
  0%   { transform: translate(0, 0) scale(1); }
  25%  { transform: translate(-10vw, -12vh) scale(1.06); }
  50%  { transform: translate(8vw, -4vh) scale(.92); }
  75%  { transform: translate(-4vw, 10vh) scale(1.08); }
  100% { transform: translate(0, 0) scale(1); }
}
@keyframes cloud-c {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(-14vw, 6vh) scale(1.12); }
  100% { transform: translate(6vw, -10vh) scale(.96); }
}

/* =========================== 3. 组件层 =========================== */

/* ---------------------------- 登录层 ---------------------------- */
/* 深色渐变底 + 彩色云雾 + 玻璃卡片：登录页永远是"暗色氛围"场景 */
#loginLayer {
  position: fixed; inset: 0; z-index: 50;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(160deg, #0a0a1e 0%, #150a2e 40%, #0a152e 100%);
}

.login-card {
  position: relative; z-index: 1;
  width: 380px; padding: 36px 32px 30px;
  background: rgba(255, 255, 255, .07);
  -webkit-backdrop-filter: blur(40px) saturate(1.5);
  backdrop-filter: blur(40px) saturate(1.5);
  border: 1px solid rgba(255, 255, 255, .10);
  border-radius: var(--rounded-lg);
  box-shadow: var(--shadow-sheet);
  animation: login-enter .6s var(--ease-sheet) backwards,
             login-float 8s ease-in-out .7s infinite;
}
@keyframes login-enter {
  from { opacity: 0; transform: translateY(30px) scale(.92); }
  to { opacity: 1; transform: none; }
}
/* 渐变流光边框：云雾五色循环流动 */
.login-card::before {
  content: ''; position: absolute; inset: -1px;
  border-radius: var(--rounded-lg); padding: 1px;
  background: linear-gradient(135deg,
    rgba(0,102,204,.5), rgba(123,47,247,.5),
    rgba(0,201,255,.5), rgba(255,110,199,.5),
    rgba(0,255,200,.5), rgba(0,102,204,.5));
  background-size: 300% 300%;
  animation: gradient-shift 6s ease infinite;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  pointer-events: none;
}
@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
@keyframes login-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.login-card .logo {
  width: 44px; height: 44px; border-radius: var(--rounded-md); margin-bottom: var(--spacing-md);
  background: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 17px; font-weight: 600; letter-spacing: 0;
  box-shadow: 0 0 24px rgba(0, 102, 204, .4);
}
.login-card h1 {
  font-family: var(--font-display);
  font-size: 26px; font-weight: 600; letter-spacing: -.4px; line-height: 1.15;
  margin: 0 0 6px; color: #f5f5f7;
}
.login-card p.sub { margin: 0 0 24px; color: rgba(245,245,247,.55); font-size: 14px; letter-spacing: -.1px; }
.login-card label {
  display: block; font-size: 13px; font-weight: 400;
  color: rgba(245,245,247,.65); margin: 14px 0 6px;
}
.login-card input {
  width: 100%; padding: 10px 12px;
  border: 1px solid rgba(255,255,255,.12); border-radius: var(--rounded-sm);
  font-size: 15px; font-family: var(--font-text); letter-spacing: -.24px;
  background: rgba(255,255,255,.06); color: #f5f5f7;
  outline: none;
  transition: border-color var(--dur) var(--ease-standard),
              box-shadow var(--dur) var(--ease-standard);
}
.login-card input:focus {
  border-color: rgba(255,255,255,.30);
  box-shadow: 0 0 0 3px rgba(255,255,255,.08);
}
.login-card input::placeholder { color: rgba(245,245,247,.35); }
.login-card button {
  margin-top: 24px; width: 100%; padding: 11px;
  border: none; border-radius: var(--rounded-pill);
  background: var(--color-primary); color: #fff;
  font-size: 15px; font-weight: 400; font-family: var(--font-text); letter-spacing: -.24px;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-standard),
              box-shadow var(--dur) var(--ease-standard);
}
.login-card button:hover { box-shadow: 0 0 20px rgba(0, 102, 204, .35); }
.login-card button:active { transform: scale(.95); }
.login-card .msg.bad { color: #ff6961; }

.hint {
  margin-top: 16px; font-size: 12px; line-height: 1.6; letter-spacing: -.08px;
  color: var(--color-ink-muted-48);
  background: var(--color-canvas-parchment);
  border-radius: var(--rounded-sm);
  padding: 10px 12px;
}
.login-card .hint {
  background: rgba(255,255,255,.05);
  color: rgba(245,245,247,.45);
}
.login-card .hint code {
  background: rgba(255,255,255,.08);
  color: rgba(245,245,247,.65);
}

/* ---------------------------- 布局 ---------------------------- */
.layout { display: flex; min-height: 100vh; position: relative; z-index: 1; }

.sidebar {
  width: var(--sidebar-w); flex: 0 0 var(--sidebar-w);
  background: var(--color-sidebar-glass);
  -webkit-backdrop-filter: var(--blur-sticky);
  backdrop-filter: var(--blur-sticky);
  border-right: 1px solid var(--color-hairline);
  padding: 18px 12px;
  position: sticky; top: 0; height: 100vh; z-index: 10;
  display: flex; flex-direction: column;
}

.sidebar .brand { display: flex; align-items: center; gap: var(--spacing-xs); margin-bottom: var(--spacing-lg); padding: 0 8px; }
.sidebar .brand .logo {
  width: 32px; height: 32px; flex: 0 0 32px; border-radius: var(--rounded-sm);
  background: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 12px; font-weight: 600; letter-spacing: 0;
  animation: logo-pulse 3s ease-in-out infinite;
}
@keyframes logo-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 102, 204, .25); }
  50% { box-shadow: 0 0 12px 4px rgba(0, 102, 204, .12); }
}
.sidebar .brand b { font-size: 15px; font-weight: 600; letter-spacing: -.24px; line-height: 1.25; }
.sidebar .brand span { font-size: 11px; color: var(--color-ink-muted-48); letter-spacing: -.02px; }

.nav-item {
  position: relative;
  display: flex; align-items: center; gap: var(--spacing-xs);
  padding: 9px 11px; margin-bottom: 2px;
  border-radius: var(--rounded-sm);
  color: var(--color-ink-muted-80); cursor: pointer;
  font-size: 14px; letter-spacing: -.14px;
  user-select: none;
  transition: background-color var(--dur-fast) var(--ease-standard),
              color var(--dur-fast) var(--ease-standard);
}
.nav-item:hover { background: var(--color-canvas-parchment); color: var(--color-ink); }
.nav-item.active { background: var(--color-primary-soft); color: var(--color-primary); font-weight: 600; }
/* 激活指示：左侧 3px 圆角条，滑入动画 */
.nav-item.active::before {
  content: ''; position: absolute; left: -12px; top: 50%; transform: translateY(-50%);
  width: 3px; height: 20px; border-radius: 0 3px 3px 0; background: var(--color-primary);
  animation: nav-ind-in .25s var(--ease-standard);
}
@keyframes nav-ind-in {
  from { transform: translateY(-50%) scaleY(0); opacity: 0; }
  to { transform: translateY(-50%) scaleY(1); opacity: 1; }
}
.nav-item .ic { width: 17px; height: 17px; flex: 0 0 17px; }
.nav-item .ic svg { width: 100%; height: 100%; display: block; }
.nav-item .nb {
  margin-left: auto; font-size: 11px; letter-spacing: -.02px;
  background: var(--color-canvas-parchment); color: var(--color-ink-muted-48);
  border-radius: var(--rounded-pill); padding: 1px 8px; min-width: 22px; text-align: center;
}
.nav-item.active .nb { background: var(--color-primary); color: #fff; }
.nav-item .nb.hot { background: var(--color-error); color: #fff; }

.sidebar .spacer { flex: 1; }
.sidebar .me {
  font-size: 12px; color: var(--color-ink-muted-48); letter-spacing: -.08px;
  padding: 12px 4px 0; border-top: 1px solid var(--color-hairline); margin-top: 8px;
}
.sidebar .me .row-me { display: flex; align-items: center; gap: 8px; }
.sidebar .me .who { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sidebar .me > button {
  width: 100%; margin-top: 8px; padding: 8px;
  background: var(--color-surface-pearl);
  border: 1px solid var(--color-divider-soft);
  border-radius: var(--rounded-sm);
  color: var(--color-ink-muted-80); font-size: 13px; font-family: var(--font-text);
  letter-spacing: -.08px; cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease-standard),
              color var(--dur-fast) var(--ease-standard),
              border-color var(--dur-fast) var(--ease-standard);
}
.sidebar .me > button:hover {
  background: var(--color-error-soft); border-color: var(--color-error); color: var(--color-error);
}
.sidebar .me > button:active { transform: scale(.95); }

.theme-toggle {
  width: 36px; flex: 0 0 36px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--color-surface-pearl);
  border: 1px solid var(--color-divider-soft);
  border-radius: var(--rounded-sm);
  color: var(--color-ink-muted-80); cursor: pointer;
  transition: color var(--dur-fast) var(--ease-standard),
              border-color var(--dur-fast) var(--ease-standard),
              transform var(--dur-fast) var(--ease-standard);
}
.theme-toggle:hover { color: var(--color-primary); border-color: var(--color-primary); }
.theme-toggle:active { transform: scale(.95); }
.theme-toggle svg { width: 16px; height: 16px; }
[data-theme="dark"] .icon-sun { display: none; }
:root:not([data-theme="dark"]) .icon-moon { display: none; }

.main {
  flex: 1; min-width: 0;
  padding: var(--main-pad-y) var(--main-pad-x) 48px;
  max-width: var(--content-max);
}

/* ---------------------------- 顶栏（毛玻璃吸顶）---------------------------- */
.topbar {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: var(--spacing-md); flex-wrap: wrap;
  margin: calc(-1 * var(--main-pad-y)) calc(-1 * var(--main-pad-x)) var(--spacing-lg);
  padding: calc(var(--main-pad-y) - 6px) var(--main-pad-x) 14px;
  background: var(--topbar-bg);
  -webkit-backdrop-filter: var(--blur-sticky);
  backdrop-filter: var(--blur-sticky);
  border-bottom: 1px solid var(--color-divider-soft);
}
.topbar h2 {
  margin: 0; font-family: var(--font-display);
  font-size: 28px; font-weight: 600; line-height: 1.14; letter-spacing: -.28px;
}
.topbar .crumb { color: var(--color-ink-muted-48); font-size: 13px; letter-spacing: -.08px; margin-top: 3px; }
.topbar .actions { display: flex; gap: var(--spacing-xs); align-items: center; flex-wrap: wrap; }

/* ---------------------------- 卡片 ---------------------------- */
/* 无阴影：层级来自"表面色变化 + 发丝描边" */
.card {
  background: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  padding: 20px 22px;
  box-shadow: var(--shadow-none);
  margin-bottom: var(--gap-card);
  transition: border-color var(--dur) var(--ease-standard),
              transform var(--dur) var(--ease-standard),
              box-shadow var(--dur) var(--ease-standard);
}
.card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 102, 204, .08);
}
.card h3 {
  margin: 0 0 16px;
  font-size: 17px; font-weight: 600; line-height: 1.29; letter-spacing: -.374px;
  display: flex; align-items: center; gap: var(--spacing-xs); flex-wrap: wrap;
}
.card h3 .tag {
  font-size: 12px; font-weight: 400; letter-spacing: -.08px;
  color: var(--color-ink-muted-48);
  background: var(--color-canvas-parchment);
  border-radius: var(--rounded-pill); padding: 2px 10px;
}
.card .desc {
  font-size: 13px; line-height: 1.6; letter-spacing: -.08px;
  color: var(--color-ink-muted-48); margin: -8px 0 16px;
}
.card .desc code {
  background: var(--color-canvas-parchment);
  border-radius: var(--rounded-sm); padding: 1px 5px; font-size: 12px;
}

/* ---------------------------- 表单 ---------------------------- */
label.f {
  display: block; font-size: 13px; font-weight: 400;
  color: var(--color-ink-muted-80); letter-spacing: -.08px;
  margin: 14px 0 6px;
}
input[type=text], input[type=password], input[type=number], select, textarea {
  width: 100%; padding: 9px 12px;
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-sm);
  font-size: 15px; font-family: var(--font-text); letter-spacing: -.24px;
  background: var(--color-canvas); color: var(--color-ink);
  outline: none;
  transition: border-color var(--dur) var(--ease-standard),
              box-shadow var(--dur) var(--ease-standard);
}
input:hover:not(:disabled), select:hover:not(:disabled), textarea:hover:not(:disabled) {
  border-color: var(--color-hairline-strong);
}
input:focus, select:focus, textarea:focus {
  border-color: var(--color-primary-focus);
  box-shadow: 0 0 0 3px var(--color-primary-ring);
}
input:disabled { background: var(--color-canvas-parchment); color: var(--color-ink-muted-48); cursor: not-allowed; }
input::placeholder, textarea::placeholder { color: var(--color-ink-muted-48); }

.row { display: flex; gap: var(--spacing-sm); flex-wrap: wrap; align-items: flex-end; }
.row .col { flex: 1; min-width: 200px; }
.inline { display: flex; align-items: center; gap: var(--spacing-xs); margin-top: var(--spacing-sm); font-size: 14px; letter-spacing: -.14px; }
.inline input[type=checkbox] {
  width: 16px; height: 16px; flex: 0 0 16px;
  accent-color: var(--color-primary); cursor: pointer;
}
.inline label { cursor: pointer; }

/* ---------------------------- 按钮 ---------------------------- */
/*
   语法映射（源自 Apple）：
     .btn          → 主 CTA，胶囊
     .btn.ghost    → 次级 CTA，描边胶囊
     .btn.pearl    → 中性工具按钮，8px（表格/工具栏）
     .btn.danger / .btn.warnbtn → 静止中性，交互时才着色
     .btn.sm       → 表格行内工具按钮，8px
*/
button.btn, a.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: var(--rounded-pill);
  padding: 9px 20px; min-height: 38px;
  font-size: 14px; font-weight: 400; font-family: var(--font-text); letter-spacing: -.14px;
  background: var(--color-primary); color: #fff;
  transition: transform var(--dur-fast) var(--ease-standard),
              background-color var(--dur-fast) var(--ease-standard),
              border-color var(--dur-fast) var(--ease-standard),
              color var(--dur-fast) var(--ease-standard);
}
button.btn:hover:not(:disabled), a.btn:hover { background: var(--color-primary-focus); box-shadow: 0 0 16px var(--color-primary-soft); }
button.btn:active:not(:disabled), a.btn:active { transform: scale(.95); }

/* 次级 CTA：描边胶囊 */
button.ghost {
  background: transparent; color: var(--color-primary);
  border-color: var(--color-primary);
  border-radius: var(--rounded-pill);
}
button.ghost:hover:not(:disabled) { background: var(--color-primary-soft); }

/* 中性工具按钮：Pearl + 8px */
button.pearl {
  background: var(--color-surface-pearl); color: var(--color-ink-muted-80);
  border-color: var(--color-divider-soft);
  border-radius: var(--rounded-sm);
}
button.pearl:hover:not(:disabled) { color: var(--color-primary); border-color: var(--color-primary); }

/* 破坏性动作：静止时完全中性，避免整张表被红色噪音占据 */
button.danger {
  background: transparent; color: var(--color-ink-muted-48);
  border-color: transparent;
}
button.danger:hover:not(:disabled) {
  background: var(--color-error-soft); color: var(--color-error); border-color: var(--color-error);
}
button.warnbtn { background: transparent; color: var(--color-ink-muted-48); border-color: transparent; }
button.warnbtn:hover:not(:disabled) {
  background: var(--color-warning-soft); color: var(--color-warning); border-color: var(--color-warning);
}

button.sm, a.btn.sm {
  padding: 5px 11px; min-height: 30px;
  font-size: 12px; letter-spacing: -.08px;
  border-radius: var(--rounded-sm);
}
button:disabled { opacity: .42; cursor: not-allowed; transform: none; }

.msg { font-size: 13px; letter-spacing: -.08px; margin-top: var(--spacing-sm); min-height: 18px; }
.msg.ok { color: var(--color-success); }
.msg.bad { color: var(--color-error); }
.msg.warn { color: var(--color-warning); }

/* ---------------------------- KPI ---------------------------- */
.kpis {
  display: grid; gap: var(--spacing-sm); margin-bottom: var(--spacing-md);
  grid-template-columns: repeat(auto-fit, minmax(168px, 1fr));
}
.kpi {
  --accent: var(--color-primary);
  background: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  padding: 14px 16px 16px;
  position: relative; overflow: hidden;
  box-shadow: var(--shadow-none);
  transition: border-color var(--dur) var(--ease-standard),
              transform var(--dur) var(--ease-standard),
              box-shadow var(--dur) var(--ease-standard);
  /* 入场错峰：数据刷新时 KPI 逐张浮现（backwards 让被延迟的卡片先隐身），
     幅度与页面切换动画一致（6px/220ms），读起来是"数据来了"而不是"闪了一下" */
  animation: kpi-in var(--dur) var(--ease-standard) backwards;
}
.kpi:nth-child(2) { animation-delay: 30ms; }
.kpi:nth-child(3) { animation-delay: 60ms; }
.kpi:nth-child(4) { animation-delay: 90ms; }
.kpi:nth-child(5) { animation-delay: 120ms; }
.kpi:nth-child(6) { animation-delay: 150ms; }
.kpi:nth-child(7) { animation-delay: 180ms; }
.kpi:nth-child(8) { animation-delay: 210ms; }
@keyframes kpi-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}
.kpi:hover {
  border-color: var(--accent);
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 24px rgba(0, 0, 0, .08), 0 0 20px color-mix(in srgb, var(--accent) 12%, transparent);
}
/* 顶部 2px 语义色带：控制台需要状态色彩编码（DESIGN.md 适配 A1） */
.kpi .bar { position: absolute; left: 0; top: 0; width: 100%; height: 2px; background: var(--accent); }
.kpi.k2 { --accent: var(--color-success); }
.kpi.k3 { --accent: var(--color-info); }
.kpi.k4 { --accent: var(--color-warning); }
.kpi.k5 { --accent: var(--color-ink-muted-48); }
.kpi.k6 { --accent: var(--color-error); }
.kpi .lab { font-size: 13px; letter-spacing: -.08px; color: var(--color-ink-muted-48); }
.kpi .val {
  font-family: var(--font-display);
  font-size: 26px; font-weight: 600; line-height: 1.10; letter-spacing: -.5px;
  margin-top: 6px; color: var(--color-ink);
}
.kpi .sub2 { font-size: 11px; letter-spacing: -.02px; color: var(--color-ink-muted-48); margin-top: 3px; }

/* ---------------------------- 表格 ---------------------------- */
.tbl-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-md);
}
table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 14px; }
th, td {
  text-align: left; padding: 10px 12px;
  border-bottom: 1px solid var(--color-hairline);
  vertical-align: middle;
}
th {
  color: var(--color-ink-muted-48);
  font-size: 13px; font-weight: 600; letter-spacing: -.08px;
  white-space: nowrap;
  background: var(--color-canvas-parchment);
  position: sticky; top: 0; z-index: 1;
}
tbody tr { transition: background-color var(--dur-fast) var(--ease-standard); }
tbody tr:hover { background: var(--color-primary-soft); }
tbody tr:last-child td { border-bottom: none; }
td.mono { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: 0; }
.nowrap { white-space: nowrap; }
.actions-cell { white-space: nowrap; }
.actions-cell button { margin-right: 2px; }
.actions-cell button:last-child { margin-right: 0; }

/* ---------------------------- 徽标 ---------------------------- */
.chip {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--color-canvas-parchment);
  color: var(--color-ink-muted-48);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-pill);
  padding: 2px 10px;
  font-size: 12px; letter-spacing: -.08px; white-space: nowrap;
}
/* 彩色徽标去掉描边，并带一个状态圆点 —— 不依赖颜色也能读状态 */
.chip.ok { background: var(--color-success-soft); color: var(--color-success); border-color: transparent; }
.chip.bad { background: var(--color-error-soft); color: var(--color-error); border-color: transparent; }
.chip.warn { background: var(--color-warning-soft); color: var(--color-warning); border-color: transparent; }
.chip.info { background: var(--color-info-soft); color: var(--color-info); border-color: transparent; }
.chip.off { background: var(--color-canvas-parchment); color: var(--color-ink-muted-48); }
/* 彩色徽标的状态圆点：色觉障碍用户靠"有没有点/点在哪一档"也能读出状态，
   而不是只能分辨颜色。只有彩色档位带点，中性徽标（.chip / .chip.off）保持纯文字。 */
.chip.ok::before,
.chip.bad::before,
.chip.warn::before,
.chip.info::before {
  content: ''; flex: none;
  width: 5px; height: 5px; border-radius: 50%;
  background: currentColor;
}
.chip.ok::before, .chip.bad::before, .chip.warn::before, .chip.info::before {
  content: ''; width: 5px; height: 5px; flex: 0 0 5px;
  border-radius: var(--rounded-pill); background: currentColor;
}

/* ---------------------------- 空态 / 分页 / 筛选 ---------------------------- */
.empty {
  color: var(--color-ink-muted-48); font-size: 13px; letter-spacing: -.08px;
  text-align: center; line-height: 1.7;
  padding: 32px 20px;
  background: var(--color-canvas-parchment);
  border: 1px dashed var(--color-hairline);
  border-radius: var(--rounded-md);
}
.pager { display: flex; align-items: center; gap: var(--spacing-xs); margin-top: var(--spacing-sm); font-size: 13px; color: var(--color-ink-muted-48); }
.filters { display: flex; gap: var(--spacing-xs); flex-wrap: wrap; margin-bottom: var(--spacing-sm); align-items: flex-end; }
.filters .col { flex: 1; min-width: 130px; }

.charts { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: var(--gap-card); }
.charts .full { grid-column: 1 / -1; }
/* 图表卡片入场错峰：接在 KPI 之后逐张浮现 */
.charts .card { animation: card-in var(--dur) var(--ease-standard) backwards; }
.charts .card:nth-child(1) { animation-delay: 60ms; }
.charts .card:nth-child(2) { animation-delay: 120ms; }
.charts .card:nth-child(3) { animation-delay: 180ms; }
.charts .card:nth-child(4) { animation-delay: 240ms; }
.charts .card:nth-child(5) { animation-delay: 300ms; }
@keyframes card-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

/* ---------------------------- 图表 SVG 入场动画 ---------------------------- */
/* 折线描绘：stroke-dashoffset 从大到 0，像笔尖在画 */
.chart-line {
  stroke-dasharray: 2000; stroke-dashoffset: 2000;
  animation: chart-draw 1.2s var(--ease-standard) forwards;
}
@keyframes chart-draw { to { stroke-dashoffset: 0; } }
/* 面积渐现：等线条画完再淡入 */
.chart-area { opacity: 0; animation: chart-fade .8s var(--ease-standard) .5s forwards; }
/* 末端圆点：最后弹出来 */
.chart-dot { opacity: 0; animation: chart-fade .3s var(--ease-standard) 1s forwards; }
@keyframes chart-fade { to { opacity: 1; } }
/* 条形从左生长：逐条错峰 */
.chart-bar {
  transform-origin: left center;
  animation: bar-grow .5s var(--ease-standard) backwards;
}
@keyframes bar-grow { from { transform: scaleX(0); } to { transform: scaleX(1); } }
/* 环形图：缩放 + 淡入 */
.chart-donut-arc { opacity: 0; animation: chart-fade .6s var(--ease-standard) .2s forwards; }
/* 堆叠条：分段生长 */
.chart-seg {
  transform-origin: left center;
  animation: bar-grow .4s var(--ease-standard) backwards;
}

/* ---------------------------- 图表 Tooltip ---------------------------- */
.chart-tooltip {
  position: fixed; z-index: 90;
  background: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-sm);
  padding: 8px 12px;
  font-size: 12.5px; line-height: 1.55; letter-spacing: -.02px;
  color: var(--color-ink);
  box-shadow: var(--shadow-float);
  pointer-events: none;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 120ms var(--ease-standard);
}
.chart-tooltip.show { opacity: 1; }
.chart-tooltip .tt-title {
  font-weight: 600; font-size: 13px; margin-bottom: 2px;
  color: var(--color-ink);
}
.chart-tooltip .tt-row { color: var(--color-ink-muted-80); }
.chart-tooltip .tt-row b { font-weight: 400; color: var(--color-ink); }

/* 图表 hover 高亮 */
.chart-hover-zone { cursor: crosshair; }
.chart-hover-zone:hover ~ .chart-line { stroke-width: 3.5; }
.chart-bar-hover:hover { opacity: .85; }
.chart-seg-hover:hover { opacity: .85; }
.chart-dot-hover { opacity: 0; transition: opacity 120ms; }
.chart-dot-hover.show { opacity: 1; }

/* KPI 可点击 */
.kpi[data-detail] { cursor: pointer; }
.kpi[data-detail]:active { transform: scale(.97); }

/* KPI 详情弹窗里的迷你表格 */
.detail-tbl { width: 100%; font-size: 13px; border-collapse: collapse; }
.detail-tbl th, .detail-tbl td { padding: 6px 10px; text-align: left; border-bottom: 1px solid var(--color-hairline); }
.detail-tbl th { color: var(--color-ink-muted-48); font-weight: 600; font-size: 12px; }
.detail-tbl td { font-variant-numeric: tabular-nums; }
.detail-tbl tr:last-child td { border-bottom: none; }
.detail-section { margin-bottom: 18px; }
.detail-section:last-child { margin-bottom: 0; }
.detail-section h4 {
  margin: 0 0 8px; font-size: 14px; font-weight: 600;
  color: var(--color-ink); letter-spacing: -.14px;
}

.kv { font-size: 14px; letter-spacing: -.14px; color: var(--color-ink-muted-48); line-height: 2; }
.kv b { color: var(--color-ink); font-weight: 400; }
.kv code {
  background: var(--color-canvas-parchment);
  border-radius: var(--rounded-sm); padding: 1px 6px; font-size: 12.5px; word-break: break-all;
}

.copy {
  margin-left: var(--spacing-xs); flex: 0 0 auto;
  font-size: 12px; letter-spacing: -.08px;
  color: var(--color-primary); cursor: pointer;
  background: transparent;
  border: 1px solid var(--color-primary);
  border-radius: var(--rounded-sm);
  padding: 2px 9px;
  transition: background-color var(--dur-fast) var(--ease-standard),
              transform var(--dur-fast) var(--ease-standard);
}
.copy:hover { background: var(--color-primary-soft); }
.copy:active { transform: scale(.95); }
.copyable { flex: 1; min-width: 0; font-family: var(--font-mono); letter-spacing: 0; }

/* ---------------------------- 骨架屏 ---------------------------- */
.skeleton {
  background: linear-gradient(90deg,
    var(--color-canvas-parchment) 25%,
    var(--color-hairline) 37%,
    var(--color-canvas-parchment) 63%);
  background-size: 400% 100%;
  animation: shimmer 1.4s ease-in-out infinite;
  border-radius: var(--rounded-sm);
}
@keyframes shimmer { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }

/* ---------------------------- 页面切换 ---------------------------- */
.section { display: none; }
.section.active { display: block; animation: page-in var(--dur) var(--ease-standard); }
@keyframes page-in {
  from { opacity: 0; transform: translateY(14px) scale(.985); }
  to { opacity: 1; transform: none; }
}

/* ---------------------------- 弹层 ---------------------------- */
.modal-mask {
  position: fixed; inset: 0; z-index: 60;
  background: rgba(0, 0, 0, .40);
  -webkit-backdrop-filter: var(--blur-overlay);
  backdrop-filter: var(--blur-overlay);
  display: flex; align-items: center; justify-content: center;
  padding: var(--spacing-lg);
  animation: fade-in var(--dur) var(--ease-standard);
}
.modal {
  background: var(--color-canvas);
  border-radius: var(--rounded-lg);
  width: 880px; max-width: 100%; max-height: 84vh;
  display: flex; flex-direction: column;
  box-shadow: var(--shadow-sheet);
  animation: sheet-in var(--dur-sheet) var(--ease-sheet);
}
.modal.md { width: 620px; }
.modal.sm { width: 440px; }
.modal header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 22px 14px;
}
.modal header h3 {
  margin: 0; font-size: 20px; font-weight: 600; line-height: 1.20; letter-spacing: -.24px;
}
.modal header .x {
  border: none; background: transparent;
  font-size: 22px; line-height: 1;
  color: var(--color-ink-muted-48); cursor: pointer;
  padding: 2px 8px; border-radius: var(--rounded-sm);
  transition: color var(--dur-fast) var(--ease-standard),
              transform var(--dur-fast) var(--ease-standard);
}
.modal header .x:hover { color: var(--color-ink); }
.modal header .x:active { transform: scale(.95); }
.modal .body { padding: 0 22px 22px; overflow: auto; }
.modal .body .probe-detail {
  background: var(--color-canvas-parchment);
  border-radius: var(--rounded-sm);
  padding: 9px 11px; margin-top: var(--spacing-xxs);
  font-size: 12.5px; color: var(--color-ink-muted-48);
  word-break: break-all; white-space: pre-wrap;
}

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes sheet-in {
  from { opacity: 0; transform: translateY(8px) scale(.98); }
  to { opacity: 1; transform: none; }
}
/* 退场：与入场镜像。JS 加 .closing 后等动画播完再清 DOM，避免"啪一下消失" */
.modal-mask.closing { animation: fade-out var(--dur-fast) var(--ease-standard) forwards; }
.modal-mask.closing .modal { animation: sheet-out var(--dur-fast) var(--ease-standard) forwards; }
@keyframes fade-out { to { opacity: 0; } }
@keyframes sheet-out { to { opacity: 0; transform: translateY(8px) scale(.98); } }

/* ---------------------------- Toast ---------------------------- */
#toasts {
  position: fixed; right: 20px; bottom: 20px; z-index: 80;
  display: flex; flex-direction: column; gap: var(--spacing-xs); align-items: flex-end;
}
.toast {
  display: flex; align-items: flex-start; gap: var(--spacing-xs);
  background: var(--color-canvas);
  color: var(--color-ink);
  border-left: 3px solid var(--color-ink-muted-48);
  border-radius: var(--rounded-md);
  padding: 11px 14px;
  font-size: 13px; letter-spacing: -.08px; line-height: 1.5;
  box-shadow: var(--shadow-float);
  max-width: 400px;
  animation: toast-in var(--dur) var(--ease-sheet);
}
.toast::before { content: 'ℹ'; color: var(--color-ink-muted-48); line-height: 1.5; }
.toast.ok { border-left-color: var(--color-success); }
.toast.ok::before { content: '✓'; color: var(--color-success); font-weight: 600; }
.toast.bad { border-left-color: var(--color-error); }
.toast.bad::before { content: '!'; color: var(--color-error); font-weight: 600; }
.toast.warn { border-left-color: var(--color-warning); }
.toast.warn::before { content: '△'; color: var(--color-warning); }
/* 退场：与入场同一条曲线，先淡出滑出再由 JS 摘除节点 */
.toast.out {
  opacity: 0; transform: translateX(16px); pointer-events: none;
  transition: opacity 180ms var(--ease-standard), transform 180ms var(--ease-standard);
}
@keyframes toast-in {
  from { opacity: 0; transform: translateX(16px); }
  to { opacity: 1; transform: none; }
}
@keyframes spin { to { transform: rotate(360deg); } }
.spin { display: inline-block; animation: spin 1s linear infinite; }

/* ---------------------------- 引导条 ---------------------------- */
.setup-banner {
  display: flex; align-items: center; gap: var(--spacing-md);
  background: var(--color-warning-soft);
  border-radius: var(--rounded-md);
  border-left: 3px solid var(--color-warning);
  padding: 14px 18px; margin-bottom: var(--spacing-md);
  animation: page-in var(--dur) var(--ease-standard);
}
.setup-banner .sb-text { flex: 1; display: flex; flex-direction: column; gap: 2px; }
.setup-banner .sb-text b { font-size: 15px; font-weight: 600; letter-spacing: -.24px; color: var(--color-ink); }
.setup-banner .sb-text span { font-size: 13px; letter-spacing: -.08px; color: var(--color-ink-muted-80); }

/* ---------------------------- YAML 编辑器 ---------------------------- */
.yaml-editor {
  width: 100%; min-height: 380px; resize: vertical;
  font-family: var(--font-mono); font-size: 12.5px; line-height: 1.65; letter-spacing: 0;
  background: var(--color-canvas-parchment);
  color: var(--color-ink);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-sm);
  padding: 12px 14px;
}
.yaml-editor:focus {
  border-color: var(--color-primary-focus);
  box-shadow: 0 0 0 3px var(--color-primary-ring);
}

/* =========================== 4. 响应式 =========================== */
/* 断点：1440 内容锁 → 1180 侧栏收窄 → 900 侧栏隐藏 → 640 单列 → 419 小屏 */
@media (max-width: 1180px) {
  :root { --sidebar-w: 200px; --main-pad-x: 20px; --main-pad-y: 22px; }
}
@media (max-width: 900px) {
  .sidebar { display: none; }
  :root { --main-pad-x: 16px; --main-pad-y: 18px; }
  .kpis { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
  .topbar { align-items: flex-start; }
}
@media (max-width: 640px) {
  :root { --main-pad-x: 14px; --main-pad-y: 14px; }
  .topbar h2 { font-size: 22px; letter-spacing: -.22px; }
  .topbar .actions { width: 100%; }
  .charts { grid-template-columns: 1fr; }
  /* 弹窗在手机上退化为底部面板 */
  .modal-mask { padding: 0; align-items: flex-end; }
  .modal, .modal.sm, .modal.md { width: 100%; max-height: 92vh; border-radius: var(--rounded-lg) var(--rounded-lg) 0 0; }
}

/* =========================== 5. 可访问性 =========================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-delay: 0ms !important;
    transition-duration: .001ms !important;
  }
  .aurora-blob { animation: none !important; }
  .login-card { animation: none !important; }
}

@media (prefers-contrast: more) {
  :root { --color-hairline: #8e8e93; --color-ink-muted-48: #48484a; }
  [data-theme="dark"] { --color-hairline: rgba(255, 255, 255, .34); --color-ink-muted-48: #d1d1d6; }
  .card, .kpi, .tbl-wrap, .modal, .toast { border: 1px solid var(--color-hairline); }
}

/* ---------------------------- 主题切换的表面过渡 ---------------------------- */
/* 深浅主题切换时，主要表面（卡片/侧栏/顶栏/徽标…）统一在 220ms 内完成颜色过渡，
   而不是只有 body 一层在过渡、其余元素硬切 —— 那样会先看到"花屏"再看到新主题。
   写成一组共享规则放在组件定义之后，覆盖各组件自己的单一属性 transition。 */
.card, .kpi, .sidebar, .topbar, .chip, th, .tbl-wrap, .empty, .route-item,
.probe, .hint, .nav-item .nb, .setup-banner, .yaml-editor, .kv code, .card .desc code {
  transition: background-color var(--dur) var(--ease-standard),
              border-color var(--dur) var(--ease-standard),
              color var(--dur) var(--ease-standard);
}

/* ---------------------------- 说明折叠（Disclosure） ---------------------------- */
/* 长说明默认收起为一行摘要：常态下界面安静，细节要用时再展开。
   去掉浏览器默认三角，chevron 自绘并随展开旋转 —— 原生 marker 在深色主题下又黑又突兀。 */
details.howto {
  margin: -6px 0 var(--spacing-md);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-md);
  background: var(--color-canvas-parchment);
}
details.howto summary {
  cursor: pointer; list-style: none; user-select: none;
  display: flex; align-items: center; gap: var(--spacing-xs);
  padding: 10px 14px;
  font-size: 13px; letter-spacing: -.08px;
  color: var(--color-ink-muted-80);
  transition: color var(--dur-fast) var(--ease-standard);
}
details.howto summary::-webkit-details-marker { display: none; }
details.howto summary:hover { color: var(--color-ink); }
details.howto summary::after {
  content: ''; margin-left: auto; flex: none;
  width: 7px; height: 7px; margin-top: -3px;
  border-right: 1.5px solid var(--color-ink-muted-48);
  border-bottom: 1.5px solid var(--color-ink-muted-48);
  transform: rotate(45deg);
  transition: transform var(--dur-fast) var(--ease-standard), margin-top var(--dur-fast) var(--ease-standard);
}
details.howto[open] summary::after { transform: rotate(225deg); margin-top: 3px; }
details.howto .howto-body {
  padding: 2px 14px 12px;
  font-size: 12.5px; line-height: 1.65; letter-spacing: -.02px;
  color: var(--color-ink-muted-48);
}
details.howto .howto-body code {
  background: var(--color-canvas);
  border-radius: var(--rounded-sm); padding: 1px 5px; font-size: 12px;
}

/* ---------------------------- 网页转发 ---------------------------- */
/* 一屏能扫完的规则清单：左边"叫什么、转到哪"，右边动作。不用表格 ——
   规则通常只有几条，卡片式比表头更省视觉重量。 */
.route-list { display: flex; flex-direction: column; gap: var(--spacing-sm); }
.route-item {
  display: flex; align-items: center; gap: var(--spacing-md);
  padding: 14px 16px;
  background: var(--color-canvas-parchment);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-md);
  transition: border-color var(--dur) var(--ease-standard);
}
.route-item:hover { border-color: var(--color-primary); }
.route-item.off { opacity: .6; }
.route-item .ri-main { flex: 1; min-width: 0; }
.route-item .ri-name {
  font-size: 15px; font-weight: 600; letter-spacing: -.24px;
  color: var(--color-ink);
  display: flex; align-items: center; gap: var(--spacing-xs);
}
.route-item .ri-paths {
  display: flex; align-items: center; gap: var(--spacing-xs);
  flex-wrap: wrap; margin-top: 4px;
  font-size: 12.5px; letter-spacing: 0;
}
.route-item .ri-link { color: var(--color-primary); text-decoration: none; }
.route-item .ri-link:hover { text-decoration: underline; }
.route-item .ri-arrow { color: var(--color-ink-muted-48); }
.route-item .ri-target { color: var(--color-ink-muted-48); word-break: break-all; }
.route-item .ri-remark {
  margin-top: 4px; font-size: 12px; letter-spacing: -.02px;
  color: var(--color-ink-muted-48);
}
.route-item .ri-actions {
  display: flex; align-items: center; gap: var(--spacing-xxs);
  flex-wrap: wrap; justify-content: flex-end;
}

@media (max-width: 900px) {
  .route-item { flex-direction: column; align-items: stretch; }
  .route-item .ri-actions { justify-content: flex-start; }
}

/* ---------------------------- 连通性检测结果 ---------------------------- */
/* 嵌在规则卡片里的一层"更亮的面"：外层 route-item 是 parchment，
   这里用 canvas 提亮一级，靠表面色差建立层级，仍然不用阴影。 */
.probe {
  margin-top: var(--spacing-xs);
  padding: 12px 14px;
  background: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-sm);
}
.probe .probe-head {
  display: flex; align-items: center; gap: var(--spacing-xs);
  flex-wrap: wrap;
}
.probe .probe-meta {
  font-size: 12.5px; letter-spacing: -.06px;
  color: var(--color-ink-muted-48);
  font-variant-numeric: tabular-nums;
}
.probe .probe-detail {
  margin-top: 6px;
  font-size: 13px; line-height: 1.55; letter-spacing: -.1px;
  color: var(--color-ink);
  word-break: break-word;
}
/* 建议用一条细竖线区分"事实"与"该怎么办"，避免两条文字糊成一段 */
.probe .probe-hint {
  margin-top: 6px; padding-left: 10px;
  border-left: 2px solid var(--color-hairline-strong);
  font-size: 12.5px; line-height: 1.6; letter-spacing: -.02px;
  color: var(--color-ink-muted-48);
}
.probe .probe-src {
  margin-top: var(--spacing-xs);
  font-size: 11.5px; letter-spacing: -.02px;
  color: var(--color-ink-muted-48);
  word-break: break-all;
}