/* ============================================================
   Crown Tracker · site.css
   深夜数据追踪舱：极夜黑底 / 皇冠金主强调 / 皇冠紫次强调
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background-color: #06070A;
  background-image: radial-gradient(ellipse at 88% -6%, rgba(109, 59, 200, 0.20), transparent 52%);
  background-repeat: no-repeat;
  background-size: 100% 1400px;
}

body {
  margin: 0;
  min-height: 100vh;
  background: transparent;
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img,
picture,
svg,
video {
  display: block;
  max-width: 100%;
}

ul,
ol { margin: 0; padding: 0; list-style: none; }

p { margin: 0 0 1em; }

a { color: inherit; }

button,
input,
select,
textarea { font: inherit; color: inherit; }

h1, h2, h3, h4 {
  margin: 0 0 0.5em;
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--text);
}

h1 { font-size: clamp(2rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.125rem); }
h3 { font-size: 1.125rem; font-weight: 700; letter-spacing: -0.01em; }

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 32px 0;
}

/* ---------- 2. CSS 变量 ---------- */
:root {
  --bg: #06070A;
  --panel: #0E1016;
  --panel-2: #16181F;
  --line: #3A3F4D;
  --line-soft: rgba(58, 63, 77, 0.5);
  --line-faint: rgba(58, 63, 77, 0.25);

  --text: #E8EAF0;
  --muted: #8A90A0;

  --brand-a: #D9A441;
  --brand-a-hi: #F2C879;
  --brand-a-tint: rgba(217, 164, 65, 0.10);

  --brand-b: #6D3BC8;
  --brand-b-hi: #9B6BFF;
  --brand-b-tint: rgba(109, 59, 200, 0.14);

  --brand-c: #22E3D3;
  --magenta: #FF3D9A;

  --glow: rgba(109, 59, 200, 0.20);

  --header-h: 44px;
  --header-h-scrolled: 36px;
  --radius: 4px;
  --pad-x: 24px;
  --maxw: 1280px;

  --mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", "IBM Plex Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

:root[data-theme="cyber"] {
  --brand-a: #B083FF;
  --brand-a-hi: #D6BEFF;
  --brand-a-tint: rgba(176, 131, 255, 0.14);

  --brand-b: #22E3D3;
  --brand-b-hi: #6BF2E7;
  --brand-b-tint: rgba(34, 227, 211, 0.14);

  --glow: rgba(34, 227, 211, 0.16);
}

@media (max-width: 900px) {
  :root { --pad-x: 16px; }
}

/* ---------- 3. 焦点可见 ---------- */
:focus-visible {
  outline: 2px solid var(--brand-c);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---------- 4. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  top: -120px;
  left: 16px;
  z-index: 300;
  display: inline-block;
  padding: 10px 18px;
  background: var(--brand-a);
  color: #0A0B0F;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  border-radius: 2px;
  transition: top 180ms var(--ease);
}

.skip-link:focus {
  top: 8px;
  outline-offset: 3px;
}

/* ============================================================
   5. 命令栏头部
   ============================================================ */
.cmdbar {
  position: sticky;
  top: 0;
  z-index: 120;
  height: var(--header-h);
  background: rgba(6, 7, 10, 0.90);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid var(--line-soft);
  transition: height 220ms var(--ease), background 220ms var(--ease);
}

.cmdbar[data-scrolled] {
  height: var(--header-h-scrolled);
  background: rgba(6, 7, 10, 0.97);
}

.cmdbar::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 96px;
  height: 1px;
  background: var(--brand-a);
  opacity: 0.85;
}

.cmdbar__inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
  height: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

.cmdbar__progress {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--brand-b), var(--brand-c) 45%, var(--brand-a));
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 90ms linear;
  pointer-events: none;
}

/* ---------- 品牌 ---------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  text-decoration: none;
  color: var(--text);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.brand__mark {
  color: var(--brand-a);
  font-size: 11px;
  line-height: 1;
  transform: translateY(-1px);
}

.brand__name {
  transition: color 180ms var(--ease);
}

.brand:hover .brand__name { color: var(--brand-a-hi); }

.brand__ver {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.5;
  padding: 1px 5px;
  color: var(--brand-a);
  border: 1px solid var(--brand-a);
  border-radius: 2px;
  transition: background 180ms var(--ease), color 180ms var(--ease);
}

.brand:hover .brand__ver {
  background: var(--brand-a);
  color: #0A0B0F;
}

.brand--foot { font-size: 15px; }

/* ---------- 导航 ---------- */
.nav {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  justify-content: center;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0;
  padding: 0;
}

.nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 11px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.01em;
  text-decoration: none;
  border-radius: 2px;
  white-space: nowrap;
  transition: color 160ms var(--ease), background 160ms var(--ease);
}

.nav__link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.045);
}

.nav__link[aria-current="page"] {
  color: var(--brand-a);
  background: var(--brand-a-tint);
  font-weight: 700;
}

.nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  bottom: 1px;
  height: 1px;
  background: var(--brand-a);
}

.nav__idx {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  opacity: 0.5;
  transition: opacity 160ms var(--ease);
}

.nav__link:hover .nav__idx,
.nav__link[aria-current="page"] .nav__idx { opacity: 0.95; }

/* ---------- 右侧工具 ---------- */
.cmdbar__tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.themebtn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 28px;
  padding: 0 10px;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 2px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background 160ms var(--ease);
}

.themebtn:hover {
  color: var(--text);
  border-color: var(--brand-a);
  background: var(--brand-a-tint);
}

.themebtn__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand-a);
  box-shadow: 0 0 0 3px var(--brand-a-tint);
  transition: background 160ms var(--ease), box-shadow 160ms var(--ease);
}

.themebtn[aria-pressed="true"] .themebtn__dot {
  background: var(--brand-c);
  box-shadow: 0 0 0 3px rgba(34, 227, 211, 0.18);
}

.themebtn__txt { line-height: 1; }

/* ---------- 汉堡按钮 ---------- */
.menubtn {
  display: none;
  align-items: center;
  gap: 8px;
  height: 28px;
  padding: 0 10px;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 2px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}

.menubtn:hover,
.menubtn[aria-expanded="true"] {
  border-color: var(--brand-a);
  color: var(--brand-a);
}

.menubtn__bars {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
  width: 13px;
  height: 12px;
}

.menubtn__bars span {
  display: block;
  height: 1px;
  width: 100%;
  background: currentColor;
  transition: transform 200ms var(--ease), opacity 200ms var(--ease);
}

.menubtn[aria-expanded="true"] .menubtn__bars span:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}
.menubtn[aria-expanded="true"] .menubtn__bars span:nth-child(2) {
  opacity: 0;
}
.menubtn[aria-expanded="true"] .menubtn__bars span:nth-child(3) {
  transform: translateY(-4px) rotate(-45deg);
}

.menubtn__txt { line-height: 1; }

/* ============================================================
   6. 页脚
   ============================================================ */
.foot {
  position: relative;
  margin-top: 104px;
  padding: 64px 0 28px;
  background: var(--bg);
  border-top: 1px solid var(--line-soft);
  color: var(--muted);
}

.foot::before {
  content: "";
  position: absolute;
  top: -1px;
  left: var(--pad-x);
  width: 120px;
  height: 1px;
  background: var(--brand-a);
}

.foot__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

.foot__grid {
  display: grid;
  grid-template-columns: minmax(200px, 1fr) minmax(0, 2.2fr);
  gap: 48px;
  align-items: start;
}

.foot__brand .brand { margin-bottom: 12px; }

.foot__note {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
  opacity: 0.82;
  line-height: 1.7;
}

.foot__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.foot__title {
  margin: 0 0 14px;
  padding-left: 10px;
  position: relative;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand-a);
  line-height: 1.4;
}

.foot__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.28em;
  width: 3px;
  height: 0.72em;
  background: var(--brand-a);
}

.foot__col ul {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.foot__col a {
  display: inline-block;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
  text-decoration: none;
  transition: color 160ms var(--ease), transform 160ms var(--ease);
}

.foot__col a:hover {
  color: var(--brand-a-hi);
  transform: translateX(2px);
}

/* ---------- 联系信息 ---------- */
.foot__contact {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--line-faint);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px 32px;
}

.foot__contact-line {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: baseline;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--text);
}

.foot__label {
  flex-shrink: 0;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand-a);
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-radius: 2px;
}

.foot__contact-note {
  grid-column: 1 / -1;
  margin: 6px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
  opacity: 0.85;
}

/* ---------- 底部法律条 ---------- */
.foot__legal {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--line-faint);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 24px;
}

.foot__legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.foot__legal-links a {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color 160ms var(--ease);
}

.foot__legal-links a:hover { color: var(--brand-a); }

.foot__copy {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
  opacity: 0.82;
  line-height: 1.8;
}

/* ============================================================
   7. 通用按钮
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 36px;
  padding: 0 18px;
  min-width: 0;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1;
  text-decoration: none;
  text-align: center;
  border: 1px solid transparent;
  border-radius: 2px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 180ms var(--ease), color 180ms var(--ease),
              border-color 180ms var(--ease), transform 180ms var(--ease),
              box-shadow 180ms var(--ease);
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--gold {
  background: var(--brand-a);
  color: #0A0B0F;
  box-shadow: 0 0 0 0 var(--brand-a-tint);
}

.btn--gold:hover {
  background: var(--brand-a-hi);
  box-shadow: 0 6px 20px -8px var(--brand-a);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}

.btn--ghost:hover {
  color: var(--brand-a);
  border-color: var(--brand-a);
  background: var(--brand-a-tint);
}

.btn--sm {
  height: 28px;
  padding: 0 12px;
  font-size: 12px;
  letter-spacing: 0.02em;
}

.btn--block {
  display: flex;
  width: 100%;
}

/* ============================================================
   8. 通用版式与容器
   ============================================================ */
.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

.split {
  display: grid;
  grid-template-columns: minmax(240px, 300px) minmax(0, 1fr);
  gap: 48px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  align-items: start;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand-a);
  margin-bottom: 14px;
}

.kicker::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--brand-a);
}

.h-section {
  position: relative;
  padding-left: 16px;
  margin: 0 0 20px;
  font-size: clamp(1.5rem, 3vw, 2.125rem);
  letter-spacing: -0.02em;
}

.h-section::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.16em;
  width: 3px;
  height: 0.82em;
  background: var(--brand-a);
}

.lead {
  max-width: 38ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text);
  margin: 0 0 1.1em;
}

.prose p {
  max-width: 38ch;
  margin: 0 0 1.1em;
  line-height: 1.8;
}

.prose h2 { margin-top: 48px; }
.prose h3 { margin-top: 32px; }

.mono { font-family: var(--mono); letter-spacing: 0.06em; }
.muted { color: var(--muted); }
.gold { color: var(--brand-a); }
.cyan { color: var(--brand-c); }
.violet { color: var(--brand-b-hi); }
.magenta { color: var(--magenta); }

/* ============================================================
   9. 索引舱
   ============================================================ */
.rail {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  align-self: start;
  padding: 20px 0 24px 20px;
  border-left: 1px solid var(--line);
  background: linear-gradient(180deg, var(--brand-b-tint), transparent 62%);
  max-height: calc(100vh - var(--header-h) - 48px);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.rail__title {
  margin: 0 0 16px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand-a);
}

.rail__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.rail__node {
  position: relative;
  display: block;
  padding: 8px 12px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
  text-decoration: none;
  border-radius: 2px;
  transition: color 160ms var(--ease), background 160ms var(--ease);
}

.rail__node::before {
  content: "";
  position: absolute;
  left: -21px;
  top: 50%;
  width: 7px;
  height: 7px;
  margin-top: -3.5px;
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: 50%;
  transition: border-color 160ms var(--ease), background 160ms var(--ease);
}

.rail__node:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.rail__node[aria-current="page"],
.rail__node.is-active {
  color: var(--brand-a);
  background: var(--brand-a-tint);
}

.rail__node[aria-current="page"]::before,
.rail__node.is-active::before {
  background: var(--brand-a);
  border-color: var(--brand-a);
}

.rail__node small {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--muted);
  opacity: 0.7;
  margin-top: 2px;
}

/* ============================================================
   10. 面板 / 卡片 / 框景
   ============================================================ */
.panel {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform 200ms var(--ease), border-color 200ms var(--ease),
              box-shadow 200ms var(--ease);
}

.panel:hover {
  transform: translateY(-2px);
  border-color: var(--brand-a);
  box-shadow: 0 14px 32px -22px rgba(0, 0, 0, 0.9);
}

.panel--dense { padding: 16px 18px; }
.panel--tall { min-height: 260px; }
.panel--flat:hover { transform: none; border-color: var(--line); }

.panel__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.panel__title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.panel__sub {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.panel__body {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  align-items: start;
}

/* ---------- 框景 ---------- */
.frame {
  position: relative;
  padding: 32px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 2px;
}

.frame::before {
  content: "";
  position: absolute;
  inset: 6px;
  pointer-events: none;
  background:
    linear-gradient(var(--brand-a), var(--brand-a)) left top / 14px 1px no-repeat,
    linear-gradient(var(--brand-a), var(--brand-a)) left top / 1px 14px no-repeat,
    linear-gradient(var(--brand-a), var(--brand-a)) right top / 14px 1px no-repeat,
    linear-gradient(var(--brand-a), var(--brand-a)) right top / 1px 14px no-repeat,
    linear-gradient(var(--brand-a), var(--brand-a)) left bottom / 14px 1px no-repeat,
    linear-gradient(var(--brand-a), var(--brand-a)) left bottom / 1px 14px no-repeat,
    linear-gradient(var(--brand-a), var(--brand-a)) right bottom / 14px 1px no-repeat,
    linear-gradient(var(--brand-a), var(--brand-a)) right bottom / 1px 14px no-repeat;
  opacity: 0.9;
}

.frame--tight { padding: 20px; }

/* ============================================================
   11. 图片容器
   ============================================================ */
.media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: var(--panel);
  background-image:
    repeating-linear-gradient(45deg, transparent 0 14px, rgba(255, 255, 255, 0.022) 14px 28px);
  border: 1px solid var(--line);
  border-radius: 2px;
}

.media > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.86) contrast(1.06) brightness(0.94);
  transition: transform 500ms var(--ease), filter 500ms var(--ease);
}

.panel:hover .media > img,
.media:hover > img {
  transform: scale(1.03);
  filter: saturate(1) contrast(1.08) brightness(1);
}

.media--wide { aspect-ratio: 21 / 9; }
.media--square { aspect-ratio: 1 / 1; }
.media--tall { aspect-ratio: 3 / 4; }
.media--thumb { aspect-ratio: 4 / 3; }

.media__cap {
  margin: 8px 0 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
  line-height: 1.6;
}

/* ============================================================
   12. 数据表 & 标签
   ============================================================ */
.dtable {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.03em;
}

.dtable caption {
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  padding-bottom: 10px;
}

.dtable th,
.dtable td {
  padding: 11px 12px;
  text-align: left;
  border-bottom: 1px solid var(--line-faint);
  vertical-align: baseline;
}

.dtable th {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom-color: var(--line);
}

.dtable td:first-child { color: var(--brand-a); }

.dtable tbody tr { transition: background 140ms var(--ease); }
.dtable tbody tr:hover { background: rgba(255, 255, 255, 0.035); }
.dtable tbody tr:hover td:first-child { color: var(--brand-a-hi); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1.5;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 2px;
  white-space: nowrap;
}

.tag--gold { color: var(--brand-a); border-color: rgba(217, 164, 65, 0.45); }
.tag--violet { color: var(--brand-b-hi); border-color: rgba(109, 59, 200, 0.55); }
.tag--cyan { color: var(--brand-c); border-color: rgba(34, 227, 211, 0.45); }
.tag--magenta { color: var(--magenta); border-color: rgba(255, 61, 154, 0.45); }

:root[data-theme="cyber"] .tag--gold { border-color: rgba(176, 131, 255, 0.5); }

/* ============================================================
   13. 面包屑
   ============================================================ */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 24px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.crumbs a {
  color: var(--muted);
  text-decoration: none;
  transition: color 160ms var(--ease);
}

.crumbs a:hover { color: var(--brand-a); }

.crumbs__sep { opacity: 0.45; }
.crumbs [aria-current="page"] { color: var(--brand-a); }

/* ============================================================
   14. 栅格
   ============================================================ */
.grid {
  display: grid;
  gap: 16px;
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--gap-lg { gap: 32px; }

/* ============================================================
   15. 滚动显现
   ============================================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 400ms var(--ease), transform 400ms var(--ease);
  will-change: opacity, transform;
}

[data-reveal][data-visible] {
  opacity: 1;
  transform: none;
  will-change: auto;
}

/* ============================================================
   16. 响应式
   ============================================================ */
@media (max-width: 1100px) {
  .foot__grid { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 1000px) {
  .split {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }
  .rail {
    position: static;
    max-height: none;
    overflow: visible;
    border-left: 1px solid var(--line);
    padding-left: 18px;
  }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .cmdbar__inner { gap: 10px; }
  .cmdbar__cta { display: none; }
  .menubtn { display: inline-flex; }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    padding: 14px var(--pad-x) 20px;
    background: #06070A;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 48px -24px rgba(0, 0, 0, 0.95);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 200ms var(--ease), transform 200ms var(--ease),
                visibility 0s linear 200ms;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    overscroll-behavior: contain;
  }

  .nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: opacity 200ms var(--ease), transform 200ms var(--ease),
                visibility 0s linear 0s;
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }

  .nav__link {
    width: 100%;
    justify-content: flex-start;
    gap: 12px;
    padding: 14px 6px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    border-radius: 0;
    border-bottom: 1px solid var(--line-faint);
  }

  .nav__link[aria-current="page"] {
    background: transparent;
    padding-left: 12px;
  }

  .nav__link[aria-current="page"]::after {
    left: 0;
    right: auto;
    top: 50%;
    bottom: auto;
    width: 3px;
    height: 16px;
    margin-top: -8px;
  }

  .nav__idx { font-size: 11px; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .foot { margin-top: 72px; padding-top: 48px; }
  .foot__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 20px; }
  .foot__legal { flex-direction: column; align-items: flex-start; }
  .grid--2,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }
  .frame { padding: 22px; }
  .panel { padding: 20px; }
  .dtable { font-size: 12px; }
  .dtable th,
  .dtable td { padding: 9px 8px; }
}

@media (max-width: 480px) {
  .foot__cols { grid-template-columns: minmax(0, 1fr); }
  .themebtn__txt { display: none; }
  .themebtn { padding: 0 8px; }
  .brand__name { font-size: 13px; }
}

/* ============================================================
   17. 动效降级
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .btn:hover,
  .panel:hover,
  .foot__col a:hover { transform: none; }

  .media:hover > img,
  .panel:hover .media > img { transform: none; }
}

/* ============================================================
   18. 打印
   ============================================================ */
@media print {
  .cmdbar,
  .foot,
  .skip-link { display: none; }
  body { background: #fff; color: #000; }
}