/* =========================================================================
   LEYU赛事 · /assets/site.css
   共享层：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件
   ========================================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 132px;
}

body { margin: 0; }

h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd, ul, ol { margin: 0; }

ul, ol { padding: 0; }
ul[class], ol[class] { list-style: none; }

img, svg, video, canvas { display: block; max-width: 100%; }
img { height: auto; }

button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
input { border: 0; background: none; }

a { color: inherit; text-decoration: none; }

table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink-900: #0B1F19;
  --ink-800: #12302A;
  --ink-700: #1C4438;
  --gray-100: #EDF0EC;
  --gray-400: #8C9793;
  --gray-600: #5A6662;
  --lime-500: #C8FF3D;
  --lime-200: #E8FFB0;
  --orange-500: #FF7A2F;
  --cyan-400: #2ED9B4;
  --paper: #FFFFFF;
  --ink-text: #12211C;

  --line: rgba(28, 68, 56, 0.22);
  --line-soft: rgba(18, 33, 28, 0.12);
  --line-dark: rgba(237, 240, 236, 0.16);
  --line-dark-soft: rgba(237, 240, 236, 0.08);

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

  --ease: cubic-bezier(.2, .7, .3, 1);
  --t: 160ms;

  --w-max: 1280px;
  --gutter: 20px;
}

@media (min-width: 720px) { :root { --gutter: 32px; } }
@media (min-width: 1080px) { :root { --gutter: 48px; } }

/* ---------- 3. 中文排版基座 ---------- */
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-text);
  background-color: var(--gray-100);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-kerning: normal;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

h1 { font-size: 44px; }
h2 { font-size: 28px; line-height: 1.18; }
h3 { font-size: 20px; line-height: 1.4; letter-spacing: -0.01em; }
h4 { font-size: 16px; line-height: 1.5; letter-spacing: 0; }

@media (min-width: 900px) {
  h1 { font-size: 72px; line-height: 1.02; }
  h2 { font-size: 44px; line-height: 1.1; }
}

strong, b { font-weight: 700; }

::selection { background: var(--lime-500); color: var(--ink-900); }

:focus-visible {
  outline: 2px solid var(--lime-500);
  outline-offset: 2px;
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

/* ---------- 4. 容器与网格 ---------- */
.container {
  width: 100%;
  max-width: var(--w-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: 64px; }
.section--tight { padding-block: 40px; }
.section--paper { background-color: var(--paper); }

.section--dark {
  background-color: var(--ink-900);
  color: var(--gray-100);
}

@media (min-width: 900px) {
  .section { padding-block: 96px; }
  .section--tight { padding-block: 56px; }
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

@media (min-width: 720px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
}

@media (min-width: 1080px) {
  .grid--split { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 48px; }
}

/* ---------- 5. 排版组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-600);
  line-height: 1.4;
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--lime-500);
  flex: 0 0 auto;
}

.section--dark .eyebrow { color: var(--gray-400); }

.section-title {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

@media (min-width: 900px) {
  .section-title { font-size: 44px; line-height: 1.08; }
}

.lede {
  font-size: 18px;
  line-height: 1.65;
  color: var(--gray-600);
  max-width: 58ch;
}

.section--dark .lede { color: var(--gray-400); }

@media (min-width: 900px) {
  .lede { font-size: 20px; }
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 20px;
  border: 1px solid var(--ink-900);
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  line-height: 1;
  color: var(--ink-900);
  background: transparent;
  transition: transform var(--t) var(--ease),
              background-color var(--t) var(--ease),
              border-color var(--t) var(--ease),
              color var(--t) var(--ease);
}

.btn:hover { transform: translateY(-2px); }

.btn--primary {
  background: var(--lime-500);
  border-color: var(--lime-500);
  color: var(--ink-900);
  font-weight: 600;
}

.btn--primary:hover {
  background: var(--lime-200);
  border-color: var(--lime-200);
}

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

.btn--ghost:hover {
  border-color: var(--ink-900);
  background: rgba(11, 31, 25, 0.05);
}

.btn--onDark {
  background: transparent;
  border-color: var(--line-dark);
  color: var(--gray-100);
}

.btn--onDark:hover {
  border-color: var(--lime-500);
  color: var(--lime-500);
}

/* ---------- 7. 面包屑 ---------- */
.breadcrumb { padding-block: 20px 0; }

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gray-600);
}

.breadcrumb__item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--gray-400);
}

.breadcrumb__link {
  border-bottom: 1px solid transparent;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.breadcrumb__link:hover {
  color: var(--ink-text);
  border-bottom-color: var(--lime-500);
}

.breadcrumb__item[aria-current="page"] { color: var(--ink-text); }

/* ---------- 8. 正文容器 ---------- */
.prose {
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-text);
}

.prose > * + * { margin-top: 1.2em; }

.prose h2 { font-size: 28px; }
.prose h3 { font-size: 20px; font-weight: 700; }

.prose a {
  border-bottom: 1px solid var(--lime-500);
  transition: background-color var(--t) var(--ease);
}

.prose a:hover { background: var(--lime-200); }

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

.prose li { position: relative; padding-left: 20px; }
.prose li + li { margin-top: 0.5em; }

.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 8px;
  height: 1px;
  background: var(--lime-500);
}

.section--dark .prose { color: var(--gray-100); }

/* ---------- 9. 内容单元 ---------- */
.card {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: 0;
  padding: 24px;
  transition: transform var(--t) var(--ease), border-color var(--t) var(--ease);
}

a.card:hover,
a.card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--ink-900);
}

.section--dark .card {
  background: var(--ink-800);
  border-color: var(--line-dark-soft);
}

a.card:hover { border-color: var(--lime-500); }

.panel {
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: 0;
  padding: 24px;
}

.panel--dark {
  background: var(--ink-800);
  border-color: var(--line-dark-soft);
  color: var(--gray-100);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 24px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1;
  color: var(--gray-600);
  background: transparent;
  white-space: nowrap;
}

.tag--active {
  background: var(--lime-200);
  border-color: var(--lime-200);
  color: var(--ink-900);
}

.tag--alert {
  border-color: var(--orange-500);
  color: var(--orange-500);
}

/* ---------- 10. 图片容器基础规则 ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  background-color: var(--ink-800);
  border: 1px solid var(--line-dark-soft);
  border-radius: 0;
  aspect-ratio: 16 / 9;
  isolation: isolate;
}

.media__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.08) brightness(0.92);
}

.media__overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(46, 217, 180, 0.18) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(46, 217, 180, 0.18) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.55;
}

.media__label {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  padding: 6px 10px;
  background: var(--lime-500);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-transform: uppercase;
}

.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 4 / 5; }
.media--square { aspect-ratio: 1 / 1; }

/* ---------- 11. 跳过链接 ---------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 999;
  padding: 10px 16px;
  background: var(--lime-500);
  color: var(--ink-900);
  border: 2px solid var(--ink-900);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.2;
  transform: translateY(-200%);
  transition: transform var(--t) var(--ease);
}

.skip-link:focus { transform: translateY(0); }

/* ---------- 12. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--ink-900);
  color: var(--gray-100);
  border-bottom: 1px solid var(--ink-700);
  transition: border-color var(--t) var(--ease);
}

.site-header[data-scrolled] { border-bottom-color: var(--lime-500); }

.site-header__rail {
  border-bottom: 1px solid var(--line-dark-soft);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  max-width: var(--w-max);
  margin-inline: auto;
  padding: 12px var(--gutter);
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border: 1px solid var(--lime-500);
  color: var(--lime-500);
  transition: background-color var(--t) var(--ease), color var(--t) var(--ease);
}

.brand:hover .brand__mark {
  background: var(--lime-500);
  color: var(--ink-900);
}

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

.brand__name {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--paper);
}

.brand__tagline {
  font-size: 12px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--gray-400);
}

/* 信号带 */
.rail__note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  padding-left: 16px;
  border-left: 1px solid var(--line-dark);
  font-size: 12px;
  line-height: 1.2;
  color: var(--gray-400);
  white-space: nowrap;
}

.rail__note::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  background: var(--cyan-400);
  box-shadow: 0 0 0 3px rgba(46, 217, 180, 0.18);
}

.rail__link {
  position: relative;
  font-size: 14px;
  line-height: 1.4;
  color: var(--gray-100);
  padding-block: 4px;
  white-space: nowrap;
  transition: color var(--t) var(--ease);
}

.rail__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--lime-500);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--t) var(--ease);
}

.rail__link:hover { color: var(--lime-500); }
.rail__link:hover::after { transform: scaleX(1); }

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--ink-700);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  line-height: 1;
  color: var(--gray-100);
  transition: border-color var(--t) var(--ease), color var(--t) var(--ease);
}

.nav-toggle:hover { border-color: var(--lime-500); color: var(--lime-500); }

.nav-toggle__bars {
  position: relative;
  width: 16px;
  height: 10px;
  flex: 0 0 auto;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--t) var(--ease);
}

.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }

.nav-toggle__label { line-height: 1; }

.site-header[data-open] .nav-toggle { border-color: var(--lime-500); color: var(--lime-500); }
.site-header[data-open] .nav-toggle__bars::before { transform: translateY(4.25px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bars::after { transform: translateY(-4.25px) rotate(-45deg); }

/* 命令栏 */
.command-bar { background-color: var(--ink-900); }

.command-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  max-width: var(--w-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
  min-height: 48px;
}

.command-bar__list {
  display: flex;
  align-items: stretch;
  gap: 2px;
  min-width: 0;
}

.cmd {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  height: 48px;
  padding: 0 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  line-height: 1;
  color: var(--gray-400);
  white-space: nowrap;
  transition: color var(--t) var(--ease), background-color var(--t) var(--ease);
}

.cmd::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--lime-500);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform var(--t) var(--ease);
}

.cmd:hover {
  color: var(--gray-100);
  background-color: rgba(237, 240, 236, 0.05);
}

.cmd:hover::before,
.cmd[aria-current="page"]::before { transform: scaleY(1); }

.cmd[aria-current="page"] { color: var(--lime-500); }

.cmd__index {
  font-size: 11px;
  color: currentColor;
  opacity: 0.55;
}

.cmd__label { line-height: 1; }

/* 筛选框 */
.command-bar__filter {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
}

.filter {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--ink-700);
  background-color: rgba(237, 240, 236, 0.03);
  transition: border-color var(--t) var(--ease);
}

.filter:focus-within { border-color: var(--lime-500); }

.filter__key {
  font-size: 12px;
  line-height: 1;
  color: var(--lime-500);
  border: 1px solid var(--ink-700);
  padding: 1px 5px;
}

.filter__input {
  width: 148px;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1;
  color: var(--gray-100);
  outline: none;
}

.filter__input::placeholder {
  color: var(--gray-400);
  opacity: 1;
}

.filter__input:focus-visible { outline: none; }

.filter__hint {
  font-size: 12px;
  line-height: 1;
  color: var(--gray-400);
  white-space: nowrap;
}

/* ---------- 13. 页脚 ---------- */
.site-footer {
  background-color: var(--ink-900);
  color: var(--gray-100);
  border-top: 1px solid var(--ink-700);
}

.site-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  padding-block: 56px 48px;
}

@media (min-width: 900px) {
  .site-footer__top {
    grid-template-columns: minmax(0, 4fr) minmax(0, 5fr) minmax(0, 3fr);
    gap: 56px;
    padding-block: 80px 64px;
  }
}

.footer-brand { max-width: 34ch; }

.footer-brand__name {
  display: inline-block;
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--paper);
  border-bottom: 2px solid transparent;
  transition: border-color var(--t) var(--ease);
}

.footer-brand__name:hover { border-bottom-color: var(--lime-500); }

.footer-brand__intro {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray-400);
}

.footer-brand__meta {
  margin-top: 20px;
  font-size: 12px;
  line-height: 1.2;
  color: var(--gray-600);
  color: rgba(140, 151, 147, 0.8);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px 24px;
}

@media (min-width: 560px) {
  .footer-nav { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.footer-col { min-width: 0; }

.footer-col__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1.4;
  color: var(--lime-500);
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-list__link {
  position: relative;
  display: inline-block;
  padding-block: 3px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--gray-400);
  transition: color var(--t) var(--ease);
}

.footer-list__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 1px;
  height: 1px;
  background: var(--lime-500);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--t) var(--ease);
}

.footer-list__link:hover { color: var(--gray-100); }
.footer-list__link:hover::after { transform: scaleX(1); }

.footer-contact {
  border-top: 1px solid var(--line-dark);
  padding-top: 24px;
}

@media (min-width: 900px) {
  .footer-contact {
    border-top: 0;
    border-left: 1px solid var(--line-dark);
    padding-top: 0;
    padding-left: 32px;
  }
}

.footer-contact__list { margin-top: 0; }

.footer-contact__row {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 12px;
  padding-block: 8px;
  border-bottom: 1px solid var(--line-dark-soft);
}

.footer-contact__label {
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.9;
  color: var(--gray-600);
  color: rgba(140, 151, 147, 0.85);
}

.footer-contact__value {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray-100);
  word-break: break-word;
}

.footer-contact__note {
  margin-top: 16px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--gray-600);
  color: rgba(140, 151, 147, 0.85);
}

.footer-contact__link {
  display: inline-block;
  margin-top: 18px;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--lime-500);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.4;
  color: var(--lime-500);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.footer-contact__link:hover {
  color: var(--ink-900);
  background: var(--lime-500);
  border-color: var(--lime-500);
  padding-inline: 8px;
}

.site-footer__bottom { border-top: 1px solid var(--line-dark); }

.footer-bottom__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 32px;
  padding-block: 20px;
}

.footer-legal {
  font-size: 12px;
  line-height: 1.6;
  color: var(--gray-400);
}

.footer-legal--muted {
  max-width: 62ch;
  color: rgba(140, 151, 147, 0.75);
}

/* ---------- 14. 滚动进度条（JS 注入） ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 200;
  width: 0;
  height: 2px;
  background: var(--lime-500);
  pointer-events: none;
  transition: width 80ms linear;
}

/* ---------- 15. 筛选结果状态 ---------- */
[data-filter-item][hidden] { display: none !important; }
[data-filter-group][hidden] { display: none !important; }

/* ---------- 16. 移动端 / 平板 ---------- */
@media (max-width: 860px) {
  html { scroll-padding-top: 24px; }

  .site-header { position: relative; }

  .site-header__inner { padding-block: 12px; gap: 12px; }

  .rail__note { display: none; }
  .rail__link { display: none; }

  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .command-bar__inner {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-inline: 0;
    min-height: 0;
    border-top: 1px solid var(--line-dark-soft);
  }

  .command-bar__list {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-inline: var(--gutter);
    gap: 0;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .command-bar__list::-webkit-scrollbar { display: none; }

  .cmd {
    height: 44px;
    padding: 0 12px;
    font-size: 12px;
  }

  .cmd__index { display: none; }

  .command-bar__filter { display: none; }

  /* 展开态 */
  .site-header[data-open] .command-bar__list {
    flex-direction: column;
    overflow: visible;
    padding-inline: 0;
    border-top: 1px solid var(--line-dark-soft);
  }

  .site-header[data-open] .command-bar__list > li { width: 100%; }

  .site-header[data-open] .cmd {
    width: 100%;
    height: 52px;
    padding-inline: var(--gutter);
    justify-content: flex-start;
    gap: 12px;
    border-bottom: 1px solid var(--line-dark-soft);
    font-size: 14px;
  }

  .site-header[data-open] .cmd__index {
    display: inline;
    font-size: 12px;
  }

  .site-header[data-open] .command-bar__filter {
    display: flex;
    padding: 14px var(--gutter) 18px;
  }

  .site-header[data-open] .filter {
    width: 100%;
    height: 40px;
  }

  .site-header[data-open] .filter__input {
    width: 100%;
    flex: 1 1 auto;
  }

  .footer-contact__row { grid-template-columns: 44px minmax(0, 1fr); }
}

@media (max-width: 480px) {
  .brand__tagline { display: none; }
  .footer-bottom__inner { flex-direction: column; align-items: flex-start; }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .btn:hover,
  a.card:hover,
  a.card:focus-visible { transform: none; }
}