/* ============================================================
   竞博官网 · /assets/site.css
   共享层：reset / 变量 / 中文排版 / 命令带页头 / 编辑部页脚
   页面特色布局由各页面专属 CSS 承接
   ============================================================ */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 120px;
}
body, h1, h2, h3, h4, h5, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, select, textarea { font: inherit; }
hr { border: 0; border-top: 1px solid rgba(185, 194, 204, .28); }

/* ---------- 2. 变量 ---------- */
:root {
  /* 色彩 */
  --c-deep: #071A33;
  --c-abyss: #04101F;
  --c-track: #0E2E52;
  --c-cream: #F5EEDF;
  --c-ink: #1E1712;
  --c-orange: #FF5A1F;
  --c-orange-soft: #FFB38A;
  --c-cyan: #2BE3C2;
  --c-silver: #B9C2CC;
  --c-alert: #D9342B;
  --c-paper: #E6DCC8;

  /* 字体 */
  --f-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  /* 尺寸与节奏 */
  --shell: 1220px;
  --gutter: clamp(18px, 4vw, 40px);
  --skew: -8deg;
  --dur: 180ms;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --shadow-paper: 0 24px 48px -30px rgba(4, 16, 31, .65);
  --line-soft: rgba(185, 194, 204, .26);
  --line-hair: rgba(185, 194, 204, .14);
}

/* ---------- 3. 基础与中文排版 ---------- */
body {
  min-height: 100vh;
  font-family: var(--f-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-cream);
  background:
    radial-gradient(1100px 560px at 82% -12%, rgba(14, 46, 82, .9), transparent 62%),
    var(--c-deep);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4 { font-weight: 900; line-height: 1.14; letter-spacing: -.01em; }
h1 { font-size: clamp(34px, 5.6vw, 64px); line-height: 1.04; letter-spacing: -.02em; }
h2 { font-size: clamp(26px, 3.2vw, 38px); }
h3 { font-size: clamp(19px, 2vw, 24px); font-weight: 800; }
h4 { font-size: 17px; font-weight: 800; }
p { font-size: 16.5px; }
strong, b { font-weight: 800; }
::selection { background: var(--c-orange); color: #fff; }

:focus-visible {
  outline: 3px solid var(--c-cyan);
  outline-offset: 3px;
  border-radius: 2px;
}
.sr-only {
  position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}
.mono { font-family: var(--f-mono); letter-spacing: .04em; }

/* ---------- 4. 容器与栅格 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section { padding-block: clamp(48px, 7vw, 96px); }
.section--tight { padding-block: clamp(28px, 4vw, 52px); }

.grid { display: grid; gap: clamp(16px, 2.4vw, 28px); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--auto { grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); }
@media (max-width: 980px) {
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 680px) {
  .grid--2, .grid--3 { grid-template-columns: 1fr; }
}

/* ---------- 5. 跳至主内容 ---------- */
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 300;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 800;
  color: #fff;
  background: var(--c-orange);
  border-radius: 2px;
  transform: translateY(-180%);
  transition: transform var(--dur) var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 6. 页头：紧凑命令带 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--c-deep);
  border-bottom: 1px solid var(--line-soft);
  transition: box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}
.site-header::after {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg,
    var(--c-orange) 0 20%,
    var(--c-cyan) 20% 30%,
    rgba(185, 194, 204, .28) 30% 100%);
}
.site-header.is-scrolled {
  background: rgba(7, 26, 51, .97);
  box-shadow: 0 18px 34px -26px rgba(0, 0, 0, .95);
}

/* 状态条 */
.header-strip {
  background: var(--c-abyss);
  border-bottom: 1px solid var(--line-hair);
}
.header-strip__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 4px 18px;
  padding-block: 7px;
}
.header-strip__meta {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-silver);
}
.header-strip__meta--end { color: rgba(185, 194, 204, .78); }
.header-strip__pip {
  display: inline-block;
  width: 16px;
  height: 2px;
  background: var(--c-cyan);
}

/* 主命令栏 */
.header-main { padding-block: 9px; }
.header-main__inner {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 22px);
  min-height: 62px;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
}
.brand__mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: var(--c-orange);
  color: #fff;
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .02em;
  transform: skewX(var(--skew));
  box-shadow: inset 0 0 0 2px rgba(4, 16, 31, .22);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}
.brand:hover .brand__mark { transform: skewX(0deg); background: #FF7A45; }
.brand__text { display: flex; flex-direction: column; gap: 2px; line-height: 1.1; }
.brand__name {
  font-size: 18px;
  font-weight: 900;
  letter-spacing: .02em;
  color: var(--c-cream);
}
.brand__sub {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

/* 索引式主导航 */
.cmd-nav { margin-inline: auto; }
.cmd-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}
.cmd-nav__item { display: block; }
.cmd-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 10px 12px;
  font-size: 15px;
  font-weight: 600;
  color: rgba(245, 238, 223, .78);
  border-radius: 2px;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.cmd-nav__idx {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .06em;
  color: var(--c-cyan);
  opacity: .72;
  transition: color var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.cmd-nav__link:hover,
.cmd-nav__link:focus-visible {
  color: #fff;
  background: rgba(43, 227, 194, .1);
}
.cmd-nav__link:hover .cmd-nav__idx { color: var(--c-orange-soft); opacity: 1; }
.cmd-nav__link[aria-current="page"] {
  color: #fff;
  background: var(--c-track);
}
.cmd-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 2px;
  background: var(--c-orange);
}
.cmd-nav__link[aria-current="page"] .cmd-nav__idx { color: var(--c-orange); opacity: 1; }

/* 右侧入口 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  font-size: 12.5px;
  color: var(--c-cream);
  background: rgba(4, 16, 31, .55);
  border: 1px solid rgba(185, 194, 204, .45);
  border-radius: 2px;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.status-pill:hover { border-color: var(--c-cyan); background: rgba(43, 227, 194, .1); }
.status-pill__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-cyan);
  box-shadow: 0 0 0 3px rgba(43, 227, 194, .18);
  animation: pill-pulse 2.4s ease-in-out infinite;
}
.status-pill__label { color: var(--c-silver); letter-spacing: .06em; }
.status-pill__val {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--c-orange);
  padding-left: 8px;
  border-left: 1px solid rgba(185, 194, 204, .38);
}
@keyframes pill-pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(43, 227, 194, .18); }
  50% { box-shadow: 0 0 0 7px rgba(43, 227, 194, .04); }
}

/* 移动索引按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  background: rgba(14, 46, 82, .65);
  border: 1px solid rgba(185, 194, 204, .45);
  border-radius: 2px;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav-toggle:hover { border-color: var(--c-cyan); }
.nav-toggle__bars {
  position: relative;
  display: block;
  width: 20px;
  height: 2px;
  background: var(--c-cream);
  transition: background var(--dur) var(--ease);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: var(--c-cream);
  transition: transform var(--dur) var(--ease);
}
.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-6px) rotate(-45deg); }

/* 滚动进度 */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  pointer-events: none;
  z-index: 2;
}
.scroll-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--c-orange), var(--c-cyan));
  transition: width 80ms linear;
}

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1.2;
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: 2px;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--primary {
  background: var(--c-orange);
  color: #fff;
  box-shadow: 0 12px 24px -16px rgba(255, 90, 31, .95);
}
.btn--primary:hover { background: #FF7A45; }
.btn--ghost {
  background: rgba(14, 46, 82, .6);
  border-color: rgba(185, 194, 204, .5);
  color: var(--c-cream);
}
.btn--ghost:hover { border-color: var(--c-cyan); color: #fff; background: rgba(43, 227, 194, .12); }
.btn--paper {
  background: var(--c-cream);
  color: var(--c-ink);
  border-color: var(--c-paper);
}
.btn--paper:hover { background: #fff; }
.btn--sm { padding: 9px 14px; font-size: 13px; }

/* ---------- 8. 通用文本组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--c-cyan);
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--c-orange);
}
.display { font-size: clamp(34px, 5.6vw, 64px); line-height: 1.04; font-weight: 900; letter-spacing: -.02em; }
.display--2 { font-size: clamp(26px, 3.6vw, 40px); line-height: 1.1; }
.lede {
  max-width: 62ch;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.8;
  color: rgba(245, 238, 223, .84);
}
.prose { max-width: 68ch; font-size: 17px; line-height: 1.85; }
.prose p + p { margin-top: 1em; }
.prose h2, .prose h3 { margin-top: 1.4em; margin-bottom: .5em; }

/* ---------- 9. 面包屑 ---------- */
.breadcrumbs {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--c-silver);
}
.breadcrumbs__list { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.breadcrumbs__list li + li::before { content: "/"; margin-right: 8px; color: rgba(185, 194, 204, .5); }
.breadcrumbs a:hover { color: var(--c-cyan); }
.breadcrumbs [aria-current="page"] { color: var(--c-cream); }

/* ---------- 10. 纸张卡与看板 ---------- */
.paper {
  position: relative;
  padding: clamp(20px, 3vw, 34px);
  background: var(--c-cream);
  color: var(--c-ink);
  border: 1px solid var(--c-paper);
  border-radius: 2px;
  box-shadow: var(--shadow-paper);
}
.paper--stack {
  box-shadow:
    7px 7px 0 -1px var(--c-paper),
    14px 14px 0 -2px rgba(230, 220, 200, .4),
    var(--shadow-paper);
}
.board {
  border: 1px solid rgba(185, 194, 204, .3);
  background: rgba(14, 46, 82, .48);
  border-radius: 2px;
  overflow: hidden;
}
.board__row {
  display: grid;
  grid-template-columns: repeat(var(--cols, 4), minmax(0, 1fr));
}
.board__cell {
  padding: 15px 18px;
  border-right: 1px solid var(--line-hair);
  border-bottom: 1px solid var(--line-hair);
  font-size: 14.5px;
  color: rgba(245, 238, 223, .88);
}
.board__cell--head {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--c-silver);
  background: rgba(4, 16, 31, .55);
}

/* ---------- 11. 标签、数据点 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-cyan);
  border: 1px solid currentColor;
  border-radius: 2px;
}
.tag--orange { color: var(--c-orange); }
.tag--silver { color: var(--c-silver); }
.stat { display: flex; flex-direction: column; gap: 6px; }
.stat__num {
  font-family: var(--f-mono);
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--c-cyan);
}
.stat__label { font-size: 13px; letter-spacing: .06em; color: var(--c-silver); }

/* ---------- 12. 分段切换（标签页） ---------- */
.tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  border-bottom: 1px solid rgba(185, 194, 204, .3);
}
.tab {
  padding: 11px 16px;
  font-size: 14px;
  font-weight: 700;
  color: rgba(245, 238, 223, .72);
  background: transparent;
  border: 1px solid transparent;
  border-bottom: 2px solid transparent;
  border-radius: 2px 2px 0 0;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.tab:hover { color: #fff; background: rgba(43, 227, 194, .1); }
.tab[aria-selected="true"] {
  color: #fff;
  background: var(--c-track);
  border-color: rgba(185, 194, 204, .32);
  border-bottom-color: var(--c-orange);
}
.tab-panel { padding-top: 22px; }
.tab-panel[hidden] { display: none; }

/* ---------- 13. 图片容器基础规则 ---------- */
.img-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(185, 194, 204, .3);
  border-radius: 2px;
  background: linear-gradient(135deg, var(--c-track), var(--c-deep));
}
.img-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.img-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(115deg, rgba(43, 227, 194, .07) 0 1px, transparent 1px 20px);
}
.img-frame--wide { aspect-ratio: 21 / 9; }
.img-frame--portrait { aspect-ratio: 3 / 4; }
.img-frame--square { aspect-ratio: 1 / 1; }
.img-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 12px 16px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--c-silver);
  background: linear-gradient(to top, rgba(4, 16, 31, .92), transparent);
}

/* ---------- 14. 进入视口显现 ---------- */
html.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}
html.js-reveal [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 15. 页脚：编辑部信息栏 ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  background: var(--c-abyss);
  color: var(--c-cream);
  border-top: 3px solid var(--c-orange);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(115deg, rgba(43, 227, 194, .05) 0 2px, transparent 2px 28px);
}
.footer-top {
  position: relative;
  padding-block: clamp(38px, 5vw, 68px) clamp(28px, 4vw, 46px);
}
.footer-cols {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: clamp(24px, 3.6vw, 52px);
}
.footer-col { min-width: 0; }
.footer-col__title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  font-family: var(--f-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--c-silver);
}
.footer-col__title::before {
  content: "";
  width: 14px;
  height: 2px;
  background: var(--c-orange);
}
.footer-brand {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px 10px;
  margin-bottom: 14px;
}
.footer-brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: var(--c-orange);
  color: #fff;
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 12px;
  transform: skewX(var(--skew));
}
.footer-brand__name { font-size: 17px; font-weight: 900; letter-spacing: .02em; }
.footer-brand__site {
  width: 100%;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: rgba(185, 194, 204, .85);
}
.footer-about {
  max-width: 36ch;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(245, 238, 223, .76);
}
.footer-promise {
  margin-top: 16px;
  padding: 12px 14px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(245, 238, 223, .92);
  background: rgba(14, 46, 82, .62);
  border-left: 3px solid var(--c-orange);
}
.footer-promise__key {
  display: block;
  margin-bottom: 4px;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--c-cyan);
}
.footer-link {
  display: inline-block;
  padding: 5px 0;
  font-size: 14.5px;
  color: rgba(245, 238, 223, .8);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.footer-link:hover,
.footer-link:focus-visible {
  color: var(--c-cyan);
  border-bottom-color: rgba(43, 227, 194, .55);
}
.footer-link--sm { font-size: 13px; }
.footer-list--meta li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 8px 0;
  border-bottom: 1px dashed rgba(185, 194, 204, .2);
}
.footer-list--meta li:last-child { border-bottom: 0; }
.footer-list__key {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: rgba(185, 194, 204, .9);
}
.footer-meta {
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--c-cream);
  overflow-wrap: anywhere;
}
.footer-note {
  margin-top: 14px;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(185, 194, 204, .88);
}
.footer-bottom {
  position: relative;
  border-top: 1px solid rgba(185, 194, 204, .2);
  background: rgba(7, 26, 51, .6);
}
.footer-bottom__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-block: 18px;
}
.footer-copy {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--c-silver);
}
.footer-legal { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 18px; }

/* ---------- 16. 响应式 ---------- */
@media (max-width: 1180px) {
  .cmd-nav__link { font-size: 14px; padding: 9px 10px; }
  .status-pill__label { display: none; }
  .status-pill__val { border-left: 0; padding-left: 0; }
}
@media (max-width: 1020px) {
  .footer-cols { grid-template-columns: 1.4fr 1fr 1.4fr; }
  .footer-col--brand { grid-column: 1 / -1; }
}
@media (max-width: 960px) {
  .site-header { scroll-padding-top: 96px; }
  .header-main__inner { gap: 10px; }
  .brand { margin-right: auto; }
  .brand__mark { width: 40px; height: 40px; font-size: 12px; }
  .brand__name { font-size: 16.5px; }
  .nav-toggle { display: inline-flex; }
  .header-actions { gap: 6px; }
  .header-actions .btn--ghost { display: none; }
  .header-actions .btn--primary { padding: 9px 12px; font-size: 12.5px; }

  /* 移动索引抽屉 */
  .cmd-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin: 0;
    display: none;
    max-height: calc(100vh - 110px);
    overflow-y: auto;
    padding: 10px var(--gutter) 22px;
    background: var(--c-deep);
    border-top: 1px solid var(--line-soft);
    border-bottom: 3px solid var(--c-orange);
    box-shadow: 0 34px 54px -34px rgba(0, 0, 0, .95);
  }
  .cmd-nav[data-open] {
    display: block;
    animation: drawer-in var(--dur) var(--ease);
  }
  .cmd-nav__list { flex-direction: column; align-items: stretch; gap: 2px; }
  .cmd-nav__link {
    display: flex;
    width: 100%;
    padding: 14px 12px;
    font-size: 16px;
    border-bottom: 1px solid var(--line-hair);
    border-radius: 0;
  }
  .cmd-nav__link[aria-current="page"] { background: rgba(43, 227, 194, .1); }
  .cmd-nav__link[aria-current="page"]::after {
    left: 0;
    right: auto;
    top: 12px;
    bottom: 12px;
    width: 3px;
    height: auto;
  }
  @keyframes drawer-in {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: none; }
  }
}
@media (max-width: 720px) {
  .header-strip__meta { font-size: 9.5px; letter-spacing: .12em; }
  .header-strip__meta--end { display: none; }
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .footer-col--brand { grid-column: 1 / -1; }
}
@media (max-width: 560px) {
  .brand__sub { display: none; }
  .status-pill { padding: 7px 9px; }
  .footer-cols { grid-template-columns: 1fr; }
  .board__row { grid-template-columns: 1fr 1fr; }
  .footer-bottom__inner { flex-direction: column; align-items: flex-start; }
}

/* ---------- 17. 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .status-pill__dot { animation: none; }
  .btn:hover, .brand:hover .brand__mark { transform: none; }
  html.js-reveal [data-reveal] { opacity: 1; transform: none; }
  .scroll-progress__bar { transition: none; }
}