/* ==========================================================================
   盈嘉体育 Site Kit — 共享样式
   视觉系统：赛事控制台 / Football Data Console
   ========================================================================== */

/* ---------- CSS 变量 ---------- */
:root {
  --bg-primary: #0E1117;
  --bg-secondary: #1A1F29;
  --bg-glass: rgba(255, 255, 255, 0.08);
  --border-glass: rgba(255, 255, 255, 0.12);
  --text-primary: #F5F2EB;
  --text-secondary: #B8B8B8;
  --text-muted: #6C6F78;
  --accent-blue: #1E6FEB;
  --accent-orange: #FF7A1A;
  --accent-cyan: #00D4FF;
  --accent-red: #E63946;
  --font-heading: "Archivo Black", "Arial Black", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --font-body: "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --font-data: "JetBrains Mono", "SFMono-Regular", "Consolas", "Menlo", monospace;
  --container-width: 1240px;
  --radius: 8px;
  --transition-fast: 0.2s ease;
  --transition-slow: 0.35s ease;
  --header-z: 100;
}

/* ---------- Reset ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-primary);
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--accent-orange);
}

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

ul, ol {
  list-style: none;
}

/* ---------- 焦点与选择 ---------- */
:focus-visible {
  outline: 3px solid var(--accent-orange);
  outline-offset: 2px;
  border-radius: 2px;
}

::selection {
  background: var(--accent-orange);
  color: #0E1117;
}

/* ---------- 通用布局 ---------- */
.u-container {
  width: min(var(--container-width), 100% - 48px);
  margin-inline: auto;
}

.u-section {
  padding-block: clamp(48px, 8vw, 104px);
}

.u-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  border: 0;
  white-space: nowrap;
}

#main-content {
  min-height: 60vh;
  outline: none;
}

/* ---------- 跳转链接 ---------- */
.u-skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 200;
  padding: 12px 24px;
  background: var(--accent-orange);
  color: #0E1117;
  font-weight: 700;
  font-size: 15px;
  border-radius: 4px;
  text-decoration: none;
  transition: top var(--transition-fast);
}
.u-skip-link:hover {
  color: #0E1117;
}
.u-skip-link:focus {
  top: 16px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 6px;
  border: 2px solid transparent;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.02em;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}
.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--accent-blue);
  color: var(--text-primary);
}
.btn--primary:hover {
  background: #3B82F6;
  color: var(--text-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(30, 111, 235, 0.35);
}

.btn--accent {
  background: var(--accent-orange);
  color: #0E1117;
  font-weight: 700;
}
.btn--accent:hover {
  background: #FF8F3D;
  color: #0E1117;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 122, 26, 0.3);
}

.btn--ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--text-primary);
}
.btn--ghost:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  transform: translateY(-2px);
}

/* ---------- 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--header-z);
  background: var(--bg-primary);
  border-bottom: 1px solid transparent;
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.site-header[data-scrolled] {
  background: rgba(14, 17, 23, 0.88);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: var(--border-glass);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}

.topbar {
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
}
.topbar__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.topbar__item--live {
  color: var(--text-secondary);
}
.topbar__item--live::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-orange);
  box-shadow: 0 0 10px rgba(255, 122, 26, 0.7);
  animation: livePulse 2s ease-in-out infinite;
}
@keyframes livePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(0.82); }
}

.header-main {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-block: 18px 12px;
}

.masthead__brand {
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(32px, 4.5vw, 44px);
  line-height: 1.1;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  text-align: center;
  position: relative;
  padding-bottom: 8px;
  text-decoration: none;
}
.masthead__brand:hover {
  color: var(--text-primary);
}
.masthead__brand::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 64px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent-blue), transparent);
}
.masthead__brand::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 84px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-orange), transparent);
}

/* 主导航 */
.main-nav {
  display: flex;
  justify-content: center;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.nav-list {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 28px;
  padding: 6px 0 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.nav-list__link {
  display: inline-block;
  padding: 6px 2px;
  position: relative;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition-fast);
}
.nav-list__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--accent-orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.nav-list__link:hover {
  color: var(--text-primary);
}
.nav-list__link:hover::after,
.nav-list__link[aria-current="page"]::after {
  transform: scaleX(1);
}
.nav-list__link[aria-current="page"] {
  color: var(--accent-orange);
  font-weight: 600;
}

/* 导航按钮（桌面隐藏） */
.nav-toggle {
  display: none;
}

/* 滚动进度 */
.scroll-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--accent-blue) 0%, var(--accent-cyan) 50%, var(--accent-orange) 100%);
  pointer-events: none;
  z-index: 110;
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  background:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    var(--bg-secondary);
  background-size: 32px 32px;
  padding-top: 56px;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-blue) 0%, var(--accent-cyan) 40%, var(--accent-orange) 100%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}

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

.footer-brand {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 32px;
  letter-spacing: 0.08em;
  line-height: 1.2;
  color: var(--text-primary);
}
.footer-slogan {
  margin-top: 8px;
  font-family: var(--font-data);
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--accent-orange);
  text-transform: uppercase;
}
.footer-icp {
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-data);
  letter-spacing: 0.04em;
}

.footer-heading {
  font-family: var(--font-data);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--text-secondary);
  margin-bottom: 16px;
  padding-bottom: 8px;
  position: relative;
}
.footer-heading::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  background: var(--accent-orange);
}

.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px 16px;
}
.footer-links a {
  display: inline-block;
  padding: 4px 0;
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast), transform var(--transition-fast);
}
.footer-links a:hover {
  color: var(--accent-orange);
  transform: translateX(4px);
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.footer-contact__item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 7px 0;
}
.footer-contact__label {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-transform: uppercase;
}
.footer-contact__text {
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-secondary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 20px 0 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

/* ---------- 返回顶部 ---------- */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: var(--accent-orange);
  color: #0E1117;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 900;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease, background-color 0.25s ease;
  box-shadow: 0 8px 24px rgba(255, 122, 26, 0.35);
}
.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.back-to-top:hover {
  background: var(--accent-blue);
  color: var(--text-primary);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0 8px;
  padding: 16px 0;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--text-muted);
}
.breadcrumb li {
  display: inline-flex;
  align-items: center;
}
.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--text-muted);
}
.breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.breadcrumb a:hover {
  color: var(--accent-orange);
}

/* ---------- 栅格 ---------- */
.grid {
  display: grid;
  gap: 24px;
}
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--split { grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); }
.grid--split-rev { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); }

/* ---------- 面板 ---------- */
.glass-panel {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  padding: 28px;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

/* ---------- 数据卡片 ---------- */
.data-card {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: 10px;
  padding: 24px;
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}
.data-card:hover {
  border-color: var(--accent-blue);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}
.data-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 20px;
  right: 20px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-blue), transparent);
  opacity: 0;
  transition: opacity 0.25s ease;
}
.data-card:hover::before {
  opacity: 1;
}
.data-card__title {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 10px;
}
.data-card__value {
  font-family: var(--font-data);
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--accent-cyan);
}
.data-card__value--blue { color: var(--accent-blue); }
.data-card__value--orange { color: var(--accent-orange); }
.data-card__meta {
  margin-top: 10px;
  font-size: 13px;
  color: var(--text-muted);
}

/* ---------- 标签 ---------- */
.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 3px;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  white-space: nowrap;
}
.tag--blue {
  border-color: rgba(30, 111, 235, 0.5);
  background: rgba(30, 111, 235, 0.12);
  color: var(--accent-blue);
}
.tag--orange {
  border-color: rgba(255, 122, 26, 0.5);
  background: rgba(255, 122, 26, 0.12);
  color: var(--accent-orange);
}
.tag--cyan {
  border-color: rgba(0, 212, 255, 0.4);
  background: rgba(0, 212, 255, 0.08);
  color: var(--accent-cyan);
}

/* ---------- 状态胶囊 ---------- */
.stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  white-space: nowrap;
}
.stat-pill::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-orange);
  box-shadow: 0 0 8px rgba(255, 122, 26, 0.5);
}

/* ---------- 章节标签与标题 ---------- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--accent-orange);
  text-transform: uppercase;
}
.section-label::before {
  content: attr(data-index);
  font-weight: 700;
  font-size: 14px;
  line-height: 1.6;
  color: #0E1117;
  background: var(--accent-orange);
  padding: 0 8px;
  border-radius: 3px;
}

.section-head {
  display: flex;
  align-items: flex-end;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.section-head__index {
  font-family: var(--font-data);
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 800;
  line-height: 0.8;
  color: transparent;
  -webkit-text-stroke: 2px rgba(30, 111, 235, 0.55);
  user-select: none;
  flex-shrink: 0;
}
.section-head__content {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-bottom: 4px;
}
.section-head__title {
  font-family: var(--font-heading);
  font-size: clamp(24px, 3.5vw, 40px);
  font-weight: 800;
  line-height: 1.15;
}
.section-head__desc {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 480px;
}

/* ---------- 图片容器 ---------- */
.img-placeholder {
  position: relative;
  overflow: hidden;
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    var(--bg-secondary);
  background-size: 24px 24px;
  border: 1px solid var(--border-glass);
  border-radius: 8px;
  color: var(--text-muted);
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.08em;
}
.img-placeholder img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.img-placeholder:hover img {
  transform: scale(1.03);
}
.img-placeholder--wide {
  aspect-ratio: 16 / 9;
  min-height: auto;
}
.img-placeholder--portrait {
  aspect-ratio: 3 / 4;
  min-height: auto;
}
.img-placeholder--hero {
  min-height: 60vh;
}

/* ---------- 背景装饰 ---------- */
.pitch-bg {
  background:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    var(--bg-primary);
  background-size: 32px 32px;
}
.pitch-glow {
  background:
    radial-gradient(ellipse at 80% 10%, rgba(30, 111, 235, 0.16), transparent 55%),
    radial-gradient(ellipse at 10% 90%, rgba(255, 122, 26, 0.1), transparent 45%),
    var(--bg-primary);
}

/* ---------- 数据表格 ---------- */
.table-data {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-data);
  font-size: 14px;
}
.table-data th {
  text-align: left;
  padding: 12px 16px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-weight: 600;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--border-glass);
}
.table-data td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}
.table-data tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* ---------- 滚动显现 ---------- */
.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.has-js [data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .nav-list {
    gap: 20px;
  }
  .nav-list__link {
    font-size: 14px;
  }
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .footer-col--brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 800px) {
  .topbar {
    justify-content: space-between;
    padding-inline: 16px;
    gap: 12px;
    font-size: 11px;
  }

  .header-main {
    padding-block: 14px 10px;
  }
  .masthead__brand {
    font-size: 28px;
  }
  .masthead__brand::before {
    width: 48px;
  }
  .masthead__brand::after {
    width: 64px;
  }

  .nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    padding: 10px;
    background: transparent;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    z-index: 2;
  }
  .nav-toggle__bar {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: transform 0.25s ease, opacity 0.25s ease;
  }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .main-nav {
    position: relative;
    border-top: none;
  }
  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    justify-content: flex-start;
    padding: 0 20px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-glass);
  }
  .main-nav[data-open] .nav-list {
    display: flex;
  }
  .nav-list__item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }
  .nav-list__item:last-child {
    border-bottom: none;
  }
  .nav-list__link {
    display: block;
    padding: 13px 4px;
    font-size: 16px;
  }
  .nav-list__link::after {
    display: none;
  }

  .grid--split,
  .grid--split-rev {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .u-container {
    width: calc(100% - 32px);
  }
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: minmax(0, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-col--brand {
    grid-column: auto;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 6px;
  }
  .footer-links {
    grid-template-columns: 1fr 1fr;
  }
  .back-to-top {
    right: 16px;
    bottom: 16px;
    width: 42px;
    height: 42px;
  }
}

/* ---------- 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;
    transition-delay: 0s !important;
  }
  .has-js [data-reveal],
  .has-js [data-reveal]:not(.is-revealed) {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .back-to-top {
    transition: none;
  }
}