/* =========================================================
   zkun · 共享设计系统
   风格：Industrial Telemetry — grid, monospace, signal-led
   字体：全部使用系统字体栈，零外部请求
   核心：冷灰白 / 深炭黑 · 电橙单色高亮 · 1px 细线网格 · ID 编号
   ========================================================= */

/* ---------- 设计令牌 · 浅色（冷灰白） ---------- */
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f1f1ee;
  --bg-soft: #e8e8e3;
  --surface: #fafaf7;
  --surface-2: #ebebe6;
  --glass: rgba(250, 250, 247, 0.88);
  --border: #d6d6cf;
  --border-soft: #e3e3dc;
  --border-strong: #1a1a1a;
  --rule: #0a0a0a;
  --text: #0a0a0a;
  --text-2: #3a3a3a;
  --text-3: #6a6a6a;
  --text-4: #9a9a9a;
  --accent: #ff5a1f;
  --accent-soft: #ff7a47;
  --accent-tint: rgba(255, 90, 31, 0.08);
  --code-bg: #0f1012;
  --code-border: #1a1a1a;
  --code-text: #e8e8e6;
  --code-comment: #6a6a6a;
  --ok: #15803d;
  --warn: #b45309;
  --alert: #b91c1c;
  --info: #1d4ed8;
  --chip-bg: #ebebe6;
  --shadow-card: 0 1px 0 var(--border);
  --shadow-pop: 0 12px 40px rgba(10, 10, 10, 0.14);
  --thumb-bg: var(--surface);
  --grid-line: rgba(10, 10, 10, 0.05);
  --accent-rgb: 255, 90, 31;
  --ok-rgb: 21, 128, 61;
  --alert-rgb: 185, 28, 28;
  --info-rgb: 29, 78, 216;
  --phosphor: #15803d;
  --phosphor-soft: #22c55e;
  --amber: #b45309;
  --amber-soft: #d97706;
}

/* ---------- 设计令牌 · 深色（深炭黑） ---------- */
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0a0b0d;
  --bg-soft: #14161a;
  --surface: #14161a;
  --surface-2: #1c1f24;
  --glass: rgba(20, 22, 26, 0.88);
  --border: #2a2d33;
  --border-soft: #1c1f24;
  --border-strong: #3a3d44;
  --rule: #e8e8e6;
  --text: #e8e8e6;
  --text-2: #b8b8b5;
  --text-3: #7a7a78;
  --text-4: #4a4a48;
  --accent: #ff6b35;
  --accent-soft: #ff8a5e;
  --accent-tint: rgba(255, 107, 53, 0.1);
  --code-bg: #14161a;
  --code-border: #2a2d33;
  --code-text: #e8e8e6;
  --code-comment: #7a7a78;
  --ok: #22c55e;
  --warn: #eab308;
  --alert: #ef4444;
  --info: #3b82f6;
  --chip-bg: #1c1f24;
  --shadow-card: 0 1px 0 var(--border);
  --shadow-pop: 0 18px 48px rgba(0, 0, 0, 0.55);
  --thumb-bg: var(--surface);
  --grid-line: rgba(232, 232, 230, 0.05);
  --accent-rgb: 255, 107, 53;
  --ok-rgb: 34, 197, 94;
  --alert-rgb: 239, 68, 68;
  --info-rgb: 59, 130, 246;
  --phosphor: #22c55e;
  --phosphor-soft: #4ade80;
  --amber: #eab308;
  --amber-soft: #facc15;
}

/* ---------- 公共令牌 ---------- */
:root {
  --container: 1240px;
  --container-prose: 760px;
  --header-h: 56px;
  --font-sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI Variable",
    "Segoe UI", system-ui, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", "JetBrains Mono", Consolas,
    "Liberation Mono", "Courier New", monospace;
  --font-display: var(--font-sans);
}

/* ---------- 重置 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
}
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  font-size: 15.5px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  min-height: 100vh;
  letter-spacing: -0.005em;
}
img,
svg {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  color: inherit;
}
ul,
ol {
  list-style: none;
  margin: 0;
  padding: 0;
}
::selection {
  background: var(--accent);
  color: #fff;
}

/* ---------- 工业风全局背景 · 细线网格 ---------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: -1px -1px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 100%);
}
body > * {
  position: relative;
  z-index: 1;
}

/* ---------- 无障碍 ---------- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.skip-link {
  position: absolute;
  left: 16px;
  top: -64px;
  z-index: 100;
  background: var(--text);
  color: var(--bg);
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 16px;
}
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
[hidden] {
  display: none !important;
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- 主题切换过渡 ---------- */
html.theme-anim,
html.theme-anim *,
html.theme-anim *::before,
html.theme-anim *::after {
  transition:
    background-color 0.4s ease,
    color 0.4s ease,
    border-color 0.4s ease,
    fill 0.4s ease,
    stroke 0.4s ease,
    opacity 0.4s ease !important;
}

/* ---------- 布局 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}
.container-prose {
  max-width: var(--container-prose);
}
.muted {
  color: var(--text-3);
}
.lead {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-2);
}
.small {
  font-size: 0.82rem;
}
.rule {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 0;
}
.rule-strong {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 0;
}

/* ---------- 顶部系统状态条 ---------- */
.status-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  height: 28px;
  padding: 0 28px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: none;
}
.status-bar::-webkit-scrollbar {
  display: none;
}
.status-bar-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.status-bar-sep {
  width: 1px;
  height: 12px;
  background: var(--border-strong);
  opacity: 0.4;
}
.status-bar-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 2px rgba(var(--ok-rgb), 0.2);
  animation: pulse 1.6s ease-in-out infinite;
}
.status-bar .spacer {
  flex: 1;
  min-width: 8px;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  transition: background 0.3s, border-color 0.3s;
}
.site-header.scrolled {
  background: var(--glass);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
}
.nav-bar {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 100%;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1;
}
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0;
  flex-shrink: 0;
  text-transform: lowercase;
}
.brand-text {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  text-transform: lowercase;
}
.brand-dot {
  color: var(--accent);
  font-weight: 800;
}
.primary-nav {
  display: flex;
  align-items: center;
  margin-left: auto;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 0;
}
.nav-menu a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  color: var(--text-2);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color 0.18s;
}
.nav-menu a::before {
  content: "";
  width: 4px;
  height: 4px;
  background: transparent;
  border-radius: 50%;
  transition: background 0.18s;
}
.nav-menu a:hover {
  color: var(--text);
}
.nav-menu a:hover::before {
  background: var(--text-4);
}
.nav-menu a[aria-current="page"] {
  color: var(--accent);
}
.nav-menu a[aria-current="page"]::before {
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-tint);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: 1px;
  cursor: pointer;
  margin-left: auto;
}
.nav-toggle-bar {
  width: 18px;
  height: 1.5px;
  background: var(--text);
  transition: transform 0.2s, opacity 0.2s;
}

/* ---------- 主题切换器（分段开关） ---------- */
.theme-switch {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border-strong);
  border-radius: 1px;
  background: var(--surface);
  flex-shrink: 0;
}
.theme-switch button {
  width: 30px;
  height: 28px;
  display: grid;
  place-items: center;
  background: none;
  border: 0;
  color: var(--text-3);
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
}
.theme-switch button + button {
  border-left: 1px solid var(--border);
}
.theme-switch button:hover {
  color: var(--text);
}
.theme-switch button[aria-pressed="true"] {
  color: #fff;
  background: var(--accent);
}

/* ---------- 区块标题 ---------- */
.section-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 20px;
  align-items: baseline;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--rule);
}
.section-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.section-head h2 {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: clamp(1.4rem, 2.6vw, 1.8rem);
  letter-spacing: -0.015em;
  line-height: 1.2;
}
.section-head h2 em {
  font-style: normal;
  color: var(--accent);
}
.section-sub {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--text-3);
  font-size: 0.88rem;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}
.section-kicker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 12px;
}

/* ---------- 页面主标题（子页 h1） ---------- */
.page-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 22px;
  flex-wrap: wrap;
  margin: 0 0 32px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--rule);
}
.page-head-copy {
  min-width: 0;
}
.page-title {
  margin: 0 0 10px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: clamp(1.8rem, 3.6vw, 2.4rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
}
.page-title em {
  font-style: normal;
  color: var(--accent);
}
.page-sub {
  margin: 0;
  max-width: 64ch;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-3);
}
.page-head-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 0;
  border: 1px solid var(--rule);
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.18s, color 0.18s, border-color 0.18s, opacity 0.18s;
}
.btn:hover {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.btn:active {
  opacity: 0.85;
}
.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.btn:disabled:hover {
  background: transparent;
  color: var(--text);
  border-color: var(--rule);
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--text);
  border-color: var(--text);
  color: var(--bg);
}
.btn-ghost {
  border-color: var(--border-strong);
  color: var(--text-2);
}
.btn-ghost:hover {
  color: var(--text);
  border-color: var(--text);
}
.btn-danger {
  color: var(--alert);
  border-color: rgba(var(--alert-rgb), 0.5);
}
.btn-danger:hover {
  background: var(--alert);
  border-color: var(--alert);
  color: #fff;
}
.btn-sm {
  padding: 5px 12px;
  font-size: 0.7rem;
}
.btn-lg {
  padding: 12px 24px;
  font-size: 0.86rem;
}
.btn-block {
  width: 100%;
}

/* ---------- 表单基础 ---------- */
.form-row {
  margin-bottom: 18px;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.field-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.req {
  color: var(--accent);
  font-weight: 700;
}
.input {
  height: 38px;
  padding: 0 12px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 0;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  transition: border-color 0.18s, box-shadow 0.18s;
  width: 100%;
  font-variant-numeric: tabular-nums;
}
.input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}
.input:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  background: var(--bg-soft);
}
.input::placeholder {
  color: var(--text-4);
}
.input-sm {
  height: 32px;
  font-size: 0.78rem;
  padding: 0 8px;
}
.textarea {
  height: auto;
  padding: 10px 12px;
  font-family: var(--font-mono);
  resize: vertical;
  min-height: 96px;
  line-height: 1.6;
}
input[type="number"].input {
  -moz-appearance: textfield;
}
input[type="number"].input::-webkit-outer-spin-button,
input[type="number"].input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
select.input {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%237a7a78' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 28px;
}

/* ---------- 搜索框 ---------- */
.search-box {
  position: relative;
  display: inline-flex;
  align-items: center;
}
.search-box > svg {
  position: absolute;
  left: 12px;
  color: var(--text-3);
  pointer-events: none;
}
.search-input {
  width: 280px;
  max-width: 60vw;
  height: 38px;
  padding: 0 14px 0 36px;
  border-radius: 0;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  transition: border-color 0.18s, box-shadow 0.18s;
}
.search-input::placeholder {
  color: var(--text-4);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
}
.search-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}

/* ---------- 面板（工具页共享） ---------- */
.panel {
  background: var(--surface);
  padding: 22px;
  display: flex;
  flex-direction: column;
  min-height: 0;
  border: 1px solid var(--border);
  position: relative;
}
.panel::before,
.panel::after {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  border-color: var(--text-3);
  border-style: solid;
  border-width: 0;
  opacity: 0.4;
}
.panel::before {
  top: -1px;
  left: -1px;
  border-top-width: 1px;
  border-left-width: 1px;
}
.panel::after {
  bottom: -1px;
  right: -1px;
  border-bottom-width: 1px;
  border-right-width: 1px;
}
.panel-grow {
  min-height: 320px;
}
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.panel-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-3);
  font-weight: 600;
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.panel-title::before {
  content: "▮";
  color: var(--accent);
  font-size: 0.6em;
}
.panel-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.panel-tag {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  padding: 2px 8px;
  border: 1px solid rgba(var(--accent-rgb), 0.4);
  border-radius: 0;
  background: var(--accent-tint);
}
.field-span2 {
  grid-column: span 2;
}
.input-tiny {
  height: 28px;
  width: 72px;
  padding: 0 6px;
  font-size: 0.78rem;
}

/* ---------- 分段开关 ---------- */
.seg {
  display: inline-flex;
  background: var(--bg-soft);
  border: 1px solid var(--border-strong);
  border-radius: 0;
  padding: 0;
}
.seg-btn {
  padding: 5px 14px;
  background: transparent;
  border: none;
  border-radius: 0;
  color: var(--text-3);
  font-size: 0.72rem;
  font-weight: 600;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.seg-btn.is-active {
  background: var(--text);
  color: var(--bg);
}

/* ---------- 复选框 ---------- */
.check {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.82rem;
  color: var(--text-2);
  cursor: pointer;
}
.check input {
  accent-color: var(--accent);
  width: 15px;
  height: 15px;
}

/* ---------- 表格基础 ---------- */
.table-wrap {
  position: relative;
  flex: 1;
  overflow: auto;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 0;
  min-height: 220px;
}
.table-wrap::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
.table-wrap::-webkit-scrollbar-thumb {
  background: var(--border-strong);
}
.table-wrap::-webkit-scrollbar-thumb:hover {
  background: var(--text-4);
}
.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.86rem;
  font-family: var(--font-sans);
}
.data-table thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  text-align: left;
  padding: 11px 16px;
  background: var(--surface-2);
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  border-bottom: 1px solid var(--border-strong);
  white-space: nowrap;
}
.data-table th.num,
.data-table td.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.data-table th.ops,
.data-table td.ops {
  text-align: right;
  white-space: nowrap;
}
.data-table tbody tr {
  transition: background 0.12s;
}
.data-table tbody tr + tr td {
  border-top: 1px solid var(--border-soft);
}
.data-table tbody tr:hover {
  background: var(--accent-tint);
}
.data-table tbody td {
  padding: 12px 16px;
  color: var(--text);
  vertical-align: middle;
}

/* 行内操作按钮 */
.row-actions {
  display: inline-flex;
  gap: 6px;
  justify-content: flex-end;
  width: 100%;
}
.icon-btn {
  width: 28px;
  height: 28px;
  display: inline-grid;
  place-items: center;
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: 0;
  color: var(--text-2);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.icon-btn:hover {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.icon-btn.danger:hover {
  background: var(--alert);
  border-color: var(--alert);
  color: #fff;
}
.icon-btn.edit:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ---------- 状态条 ---------- */
.statusbar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 18px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  flex-wrap: wrap;
}
.status-led {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-4);
  flex-shrink: 0;
  transition: background 0.2s, box-shadow 0.2s;
}
.status-led.on {
  background: var(--ok);
  box-shadow: 0 0 0 2px rgba(var(--ok-rgb), 0.2);
}
.status-led.busy,
.status-led.load {
  background: var(--accent);
  animation: pulse 1.2s ease-in-out infinite;
}
.status-led.err {
  background: var(--alert);
}
.status-text {
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-size: 0.72rem;
}
.status-divider {
  width: 1px;
  height: 14px;
  background: var(--border-strong);
}
.status-meta {
  color: var(--text-3);
  font-family: var(--font-mono);
}
.status-spacer {
  flex: 1;
  min-width: 8px;
}
.status-badge {
  padding: 3px 10px;
  border-radius: 0;
  font-size: 0.68rem;
  font-weight: 600;
  border: 1px solid var(--border-strong);
  color: var(--text-3);
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.status-badge.ok {
  color: var(--ok);
  border-color: rgba(var(--ok-rgb), 0.5);
}
.status-badge.no {
  color: var(--alert);
  border-color: rgba(var(--alert-rgb), 0.5);
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* ---------- 空 / 加载状态 ---------- */
.empty-state,
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 64px 24px;
  color: var(--text-3);
  text-align: center;
  border: 1px dashed var(--border-strong);
}
.loading-state {
  position: absolute;
  inset: 0;
  background: var(--surface);
  flex-direction: row;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}
.empty-icon {
  font-family: var(--font-mono);
  font-size: 2rem;
  color: var(--text-4);
  line-height: 1;
  letter-spacing: 0.2em;
}
.empty-text {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-2);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.empty-hint {
  margin: 0;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--text-4);
  letter-spacing: 0.04em;
}
.spinner {
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--border-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---------- Toast ---------- */
.toast-stack {
  position: fixed;
  top: calc(var(--header-h) + 16px);
  right: 24px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
  max-width: calc(100vw - 48px);
}
.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 16px;
  min-width: 260px;
  max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-left: 2px solid var(--ok);
  box-shadow: var(--shadow-pop);
  color: var(--text);
  font-size: 0.86rem;
  font-family: var(--font-mono);
  pointer-events: auto;
  animation: toast-in 0.22s ease;
  letter-spacing: 0.02em;
}
.toast.success { border-left-color: var(--ok); }
.toast.err,
.toast.error { border-left-color: var(--alert); }
.toast.info { border-left-color: var(--info); }
.toast-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ok);
  flex-shrink: 0;
}
.toast.err .toast-dot,
.toast.error .toast-dot { background: var(--alert); }
.toast.info .toast-dot { background: var(--info); }
.toast.is-leaving {
  animation: toast-out 0.2s ease forwards;
}
@keyframes toast-in {
  from { opacity: 0; transform: translateX(16px); }
  to { opacity: 1; transform: none; }
}
@keyframes toast-out {
  to { opacity: 0; transform: translateX(16px); }
}

/* ---------- 弹窗 ---------- */
.modal {
  width: min(520px, calc(100vw - 32px));
  margin: auto;
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: 0;
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-pop);
}
.modal-sm {
  width: min(400px, calc(100vw - 32px));
}
.modal::backdrop {
  background: rgba(10, 11, 13, 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.modal-form {
  display: flex;
  flex-direction: column;
  max-height: 90vh;
}
.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border);
}
.modal-title {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.modal-body {
  padding: 22px 24px;
  overflow-y: auto;
}
.modal-foot {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 16px 24px 20px;
  border-top: 1px solid var(--border);
}
.modal-message {
  margin: 0;
  color: var(--text-2);
  font-size: 0.95rem;
  line-height: 1.65;
  font-family: var(--font-sans);
}
.modal-message strong {
  color: var(--text);
}
.modal-hint {
  margin: 14px 0 0;
  padding: 10px 14px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  border: 1px solid rgba(var(--alert-rgb), 0.4);
  background: rgba(var(--alert-rgb), 0.06);
  color: var(--alert);
}

/* ---------- 代码块 ---------- */
pre.code-block,
.code-block {
  margin: 0;
  padding: 18px 20px;
  border: 1px solid var(--code-border);
  border-radius: 0;
  background: var(--code-bg);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.75;
  color: var(--code-text);
  overflow-x: auto;
  font-variant-numeric: tabular-nums;
}

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--rule);
  padding: 40px 0 24px;
  margin-top: 80px;
  background: var(--bg-soft);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.footer-brand .brand-text {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: lowercase;
}
.footer-brand p {
  margin: 0;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--text-3);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.footer-nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-nav a {
  color: var(--text-2);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.18s;
}
.footer-nav a:hover {
  color: var(--accent);
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding-top: 20px;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--text-4);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---------- 滚动揭示 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* =========================================================
   响应式 · 共享断点
   ========================================================= */

/* 移动端导航折叠 */
@media (max-width: 760px) {
  body {
    font-size: 15px;
  }
  .container {
    padding: 0 20px;
  }
  .status-bar {
    padding: 0 20px;
  }
  .nav-bar {
    gap: 12px;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-menu {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 20px 16px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.2s, opacity 0.2s;
  }
  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-menu a {
    padding: 14px 0;
    border-bottom: 1px solid var(--border-soft);
  }
  .nav-menu a::before {
    display: none;
  }
  .nav-menu a[aria-current="page"] {
    color: var(--accent);
  }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
  }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
  }
  .toast-stack {
    right: 12px;
    left: 12px;
  }
  .toast {
    max-width: none;
    min-width: 0;
  }
  .search-input,
  .search-box {
    width: 100%;
  }
  .site-footer {
    padding: 32px 0 20px;
    margin-top: 56px;
  }
  .panel {
    padding: 16px;
  }
}

/* 超窄屏：表格转为卡片视图 */
@media (max-width: 560px) {
  .data-table thead {
    display: none;
  }
  .data-table,
  .data-table tbody,
  .data-table tr,
  .data-table td {
    display: block;
    width: 100%;
  }
  .data-table tbody tr {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0;
    padding: 10px 14px;
    margin-bottom: 12px;
  }
  .data-table tbody tr + tr td {
    border-top: none;
  }
  .data-table tbody td {
    padding: 6px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    text-align: right;
  }
  .data-table tbody td::before {
    content: attr(data-label);
    font-family: var(--font-mono);
    font-size: 0.66rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-3);
    font-weight: 600;
    text-align: left;
  }
  .data-table td.ops,
  .data-table td[data-label="操作"] {
    justify-content: flex-end;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .section-head {
    grid-template-columns: 1fr;
  }
  .section-num {
    font-size: 0.66rem;
  }
}