/* ============================================================
   安博体育登录 · 共享样式表 /assets/site.css
   夜间演播室 × 赛场数据墙 · 编号索引 · 极细边界
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, li, figure, figcaption,
blockquote, dl, dd, table, th, td {
  margin: 0;
}

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

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

table {
  border-collapse: collapse;
}

/* ---------- 2. 设计令牌 ---------- */
:root {
  /* 色彩 */
  --ink: #071B16;
  --ink-2: #0B0D0C;
  --panel: #12332A;
  --cream: #F4EFE3;
  --lime: #C9FF3D;
  --orange: #FF6A1A;
  --sand: #D8B06A;
  --muted: #8FA89D;
  --alert: #4A1710;

  --line: rgba(143, 168, 157, 0.28);
  --line-soft: rgba(143, 168, 157, 0.14);
  --line-strong: rgba(244, 239, 227, 0.26);
  --lime-veil: rgba(201, 255, 61, 0.1);

  /* 字体 */
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC",
    "Source Han Sans SC", "Microsoft YaHei", system-ui, -apple-system,
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;

  /* 尺度 */
  --shell-max: 1280px;
  --gutter: clamp(16px, 4vw, 48px);
  --radius: 2px;
  --shadow-1: 0 1px 0 rgba(244, 239, 227, 0.05),
    0 24px 48px -36px rgba(0, 0, 0, 0.95);
}

/* ---------- 3. 基础排版与中文阅读 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink);
  background-image:
    radial-gradient(1100px 560px at 84% -8%, rgba(201, 255, 61, 0.07), transparent 62%),
    radial-gradient(880px 480px at 6% 2%, rgba(216, 176, 106, 0.06), transparent 58%);
  background-repeat: no-repeat;
  color: var(--cream);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 900;
  font-stretch: condensed;
  line-height: 1.08;
  letter-spacing: -0.012em;
}

h1 { font-size: clamp(2.5rem, 6vw, 5.5rem); }
h2 { font-size: clamp(1.75rem, 3.4vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 2.2vw, 1.65rem); }
h4 { font-size: clamp(1.0625rem, 1.6vw, 1.25rem); }

p { text-wrap: pretty; }

strong { font-weight: 800; color: var(--cream); }

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

:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  border-radius: 1px;
}

#main-content:focus-visible {
  outline: 2px dashed var(--lime);
  outline-offset: -4px;
}

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

.section {
  padding-block: clamp(40px, 6vw, 84px);
}

.section--tight {
  padding-block: clamp(24px, 3.2vw, 44px);
}

.stack {
  display: grid;
  gap: clamp(12px, 1.6vw, 20px);
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.rule {
  height: 1px;
  border: 0;
  background: var(--line);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--sand);
  line-height: 1.4;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--orange);
  flex: 0 0 auto;
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(20px, 3vw, 36px);
}

.section-head__title {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
}

.section-head__index {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--sand);
  text-transform: uppercase;
}

/* ---------- 5. 网格 ---------- */
.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 32px);
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.grid--rail {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.6vw, 36px);
}

@media (min-width: 1024px) {
  .grid--rail {
    grid-template-columns: minmax(180px, 224px) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: transparent;
  color: var(--cream);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.08em;
  white-space: nowrap;
  transition: background-color 0.16s ease, border-color 0.16s ease,
    color 0.16s ease, transform 0.16s ease;
}

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

.btn--primary {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
  box-shadow: inset 0 0 0 1px rgba(7, 27, 22, 0.18);
}

.btn--primary:hover {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
}

.btn--ghost {
  background: rgba(18, 51, 42, 0.5);
}

.btn--ghost:hover {
  border-color: var(--lime);
  color: var(--lime);
  background: var(--lime-veil);
}

.btn--sm {
  padding: 8px 14px;
  font-size: 12px;
  letter-spacing: 0.1em;
}

/* ---------- 7. 头部外壳 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, #071B16 0%, rgba(7, 27, 22, 0.96) 100%);
  border-bottom: 1px solid var(--line);
  color: var(--cream);
  backdrop-filter: blur(8px);
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -72px;
  z-index: 99;
  padding: 10px 16px;
  background: var(--lime);
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  border-radius: var(--radius);
  box-shadow: 0 8px 24px -14px rgba(0, 0, 0, 0.9);
  transition: top 0.16s ease;
}

.skip-link:focus,
.skip-link:focus-visible {
  top: 12px;
}

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: rgba(143, 168, 157, 0.16);
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--lime), var(--orange));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.08s linear;
}

/* masthead */
.masthead {
  border-bottom: 1px solid var(--line-soft);
}

.masthead__inner {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  min-height: 76px;
  padding-block: 12px;
}

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

.brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  background: var(--lime);
  color: var(--ink);
  font-size: 19px;
  font-weight: 900;
  line-height: 1;
  box-shadow: 3px 3px 0 var(--sand);
  transition: box-shadow 0.16s ease, transform 0.16s ease;
}

.brand:hover .brand__mark {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--orange);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  gap: 3px;
}

.brand__name {
  font-size: 19px;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--cream);
}

.brand__meta {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sand);
}

.masthead__note {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
  padding-left: 18px;
  border-left: 1px solid var(--line);
  white-space: nowrap;
}

.masthead__actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-left: auto;
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 10px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(18, 51, 42, 0.6);
  color: var(--cream);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.nav-toggle__bars {
  display: grid;
  gap: 4px;
  width: 16px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--lime);
  transition: transform 0.16s ease, opacity 0.16s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child {
  transform: translateY(3px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

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

/* ---------- 8. 主导航（编号索引条） ---------- */
.site-nav {
  background: linear-gradient(90deg, rgba(18, 51, 42, 0.55), rgba(7, 27, 22, 0) 78%);
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.site-nav__item {
  flex: 0 0 auto;
  border-right: 1px solid var(--line-soft);
}

.site-nav__item:first-child {
  border-left: 1px solid var(--line-soft);
}

.site-nav__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 13px clamp(12px, 1.6vw, 22px);
  border-bottom: 2px solid transparent;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: rgba(244, 239, 227, 0.78);
  transition: color 0.16s ease, border-color 0.16s ease,
    background-color 0.16s ease;
}

.site-nav__link:hover {
  color: var(--cream);
  background: var(--lime-veil);
  border-bottom-color: var(--lime);
}

.site-nav__link[aria-current="page"] {
  color: var(--lime);
  background: var(--lime-veil);
  border-bottom-color: var(--lime);
}

.nav-num {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--sand);
  transition: color 0.16s ease;
}

.site-nav__link[aria-current="page"] .nav-num {
  color: var(--orange);
}

/* ---------- 9. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(40px, 6vw, 88px);
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  color: var(--cream);
}

.site-footer::before {
  content: "";
  display: block;
  height: 2px;
  background: linear-gradient(
    90deg,
    var(--lime) 0%,
    var(--orange) 38%,
    var(--sand) 72%,
    transparent 100%
  );
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 2.2fr) minmax(0, 1.4fr);
  gap: clamp(24px, 4vw, 56px);
  padding-block: clamp(36px, 6vw, 72px);
}

.site-footer__lead {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.site-footer__brand {
  display: inline-block;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 900;
  letter-spacing: 0.01em;
  color: var(--cream);
  transition: color 0.16s ease;
}

.site-footer__brand:hover {
  color: var(--lime);
}

.site-footer__desc {
  margin-top: 12px;
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.site-footer__lead .btn {
  margin-top: 20px;
}

.site-footer__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 32px);
}

.footer-col__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sand);
  line-height: 1.4;
}

.footer-col__list {
  display: grid;
  gap: 9px;
}

.footer-col__link {
  display: inline-block;
  font-size: 14px;
  color: rgba(244, 239, 227, 0.76);
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

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

.footer-meta {
  display: grid;
  gap: 2px;
}

.footer-meta__label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.footer-meta__value {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.55;
  color: var(--cream);
  overflow-wrap: anywhere;
}

.footer-note {
  margin-top: 14px;
  padding-left: 10px;
  border-left: 2px solid var(--orange);
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 24px;
  padding-block: 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.site-footer__copy {
  font-family: var(--font-mono);
}

.site-footer__icp {
  font-family: var(--font-mono);
  color: var(--sand);
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-left: auto;
}

.site-footer__legal .footer-col__link {
  font-size: 12px;
}

/* ---------- 10. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

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

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

.breadcrumb__link {
  color: var(--muted);
  transition: color 0.16s ease;
}

.breadcrumb__link:hover {
  color: var(--lime);
}

.breadcrumb__sep {
  color: rgba(143, 168, 157, 0.5);
}

.breadcrumb__current {
  color: var(--sand);
}

/* ---------- 11. 正文长文 ---------- */
.prose {
  max-width: 72ch;
  font-size: 17px;
  line-height: 1.8;
  color: rgba(244, 239, 227, 0.9);
}

.prose > * + * {
  margin-top: 1em;
}

.prose h2 {
  margin-top: 1.8em;
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  color: var(--cream);
}

.prose h3 {
  margin-top: 1.5em;
  color: var(--cream);
}

.prose a {
  color: var(--lime);
  border-bottom: 1px solid currentColor;
}

.prose a:hover {
  color: var(--orange);
}

.prose ul,
.prose ol {
  display: grid;
  gap: 0.5em;
}

.prose li {
  position: relative;
  padding-left: 18px;
}

.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  background: var(--orange);
}

.prose ol {
  counter-reset: prose-ol;
}

.prose ol li::before {
  counter-increment: prose-ol;
  content: counter(prose-ol, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--sand);
}

.prose blockquote {
  padding-left: 18px;
  border-left: 2px solid var(--sand);
  color: var(--muted);
}

.prose code {
  padding: 2px 6px;
  border-radius: var(--radius);
  background: rgba(201, 255, 61, 0.14);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.prose table {
  width: 100%;
  font-size: 15px;
}

.prose th,
.prose td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line-soft);
  text-align: left;
  vertical-align: top;
}

.prose th {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sand);
}

/* 浅色阅读面（条款类页面） */
.surface-light {
  background: var(--cream);
  color: var(--ink-2);
}

.surface-light h2,
.surface-light h3,
.surface-light strong {
  color: var(--ink-2);
}

.surface-light .prose {
  color: #1b2321;
}

.surface-light .prose a {
  color: #2f6a3a;
  border-bottom-color: currentColor;
}

.surface-light .prose a:hover {
  color: var(--orange);
}

.surface-light .prose blockquote {
  color: #43534b;
  border-left-color: var(--orange);
}

.surface-light .prose th,
.surface-light .prose td {
  border-bottom-color: rgba(11, 13, 12, 0.14);
}

.surface-light .prose th {
  color: #6a5a33;
}

.surface-light .section-head,
.surface-light .rule {
  border-color: rgba(11, 13, 12, 0.16);
  background-color: transparent;
}

.surface-light .rule {
  background: rgba(11, 13, 12, 0.16);
}

.surface-light :focus-visible {
  outline-color: #0B0D0C;
}

.surface-light .eyebrow {
  color: #6a5a33;
}

/* ---------- 12. 面板 / 标签 / 数字 / 图片容器 ---------- */
.panel {
  padding: clamp(18px, 2.4vw, 28px);
  background: rgba(18, 51, 42, 0.55);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
}

.panel--flat {
  background: var(--ink-2);
}

.panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1.5;
  color: var(--cream);
  white-space: nowrap;
}

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

.tag--orange {
  background: transparent;
  border-color: var(--orange);
  color: var(--orange);
}

.tag--sand {
  background: transparent;
  border-color: rgba(216, 176, 106, 0.5);
  color: var(--sand);
}

.num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

/* 响应式图片容器基础规则 */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-image: linear-gradient(160deg, #12332A 0%, #071B16 72%);
  aspect-ratio: 16 / 10;
}

.media-frame > img,
.media-frame > picture,
.media-frame > picture > img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--banner { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame--placeholder::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    135deg,
    rgba(201, 255, 61, 0.07) 0 1px,
    transparent 1px 12px
  );
  pointer-events: none;
}

.media-frame__caption {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 4px 9px;
  border-radius: var(--radius);
  background: rgba(7, 27, 22, 0.82);
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cream);
}

/* ---------- 13. 滚动显现 ---------- */
.has-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.2, 0.7, 0.3, 1);
}

.has-reveal [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ---------- 14. 响应式：头部与页脚 ---------- */
@media (max-width: 1200px) {
  .masthead__note {
    display: none;
  }
}

@media (max-width: 1080px) {
  .site-footer__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .site-footer__contact {
    grid-column: 1 / -1;
  }
}

@media (max-width: 960px) {
  .masthead__inner {
    min-height: 64px;
    padding-block: 10px;
  }

  .masthead__actions {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    border-top: 1px solid var(--line);
    background: var(--ink-2);
  }

  .site-nav[data-open] {
    display: block;
    animation: nav-drop 0.18s ease both;
  }

  .site-nav__list {
    flex-direction: column;
    flex-wrap: nowrap;
    padding-inline: 0;
    padding-block: 6px;
  }

  .site-nav__item {
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .site-nav__item:first-child {
    border-left: 0;
  }

  .site-nav__item:last-child {
    border-bottom: 0;
  }

  .site-nav__link {
    padding: 14px var(--gutter);
    font-size: 15px;
  }

  .site-nav__link:hover,
  .site-nav__link[aria-current="page"] {
    border-bottom-color: transparent;
  }

  .site-nav__link[aria-current="page"] {
    box-shadow: inset 3px 0 0 var(--lime);
  }
}

@keyframes nav-drop {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 720px) {
  .site-footer__inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .site-footer__contact {
    grid-column: auto;
  }

  .site-footer__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-footer__legal {
    margin-left: 0;
    width: 100%;
  }

  .brand__name {
    font-size: 17px;
  }
}

@media (max-width: 420px) {
  .brand__mark {
    width: 34px;
    height: 34px;
    font-size: 17px;
  }

  .site-footer__cols {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* ---------- 15. 降低动效偏好 ---------- */
@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;
  }

  .has-reveal [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .skip-link {
    transition: none;
  }

  .site-nav[data-open] {
    animation: none;
  }

  .btn:hover {
    transform: none;
  }
}