/* =========================================================
   四季体育 · site.css
   全站共享样式：命令栏头部 / 进度轨 / 页脚数据板 / 公共组件
   ========================================================= */

/* ---------- 1. 变量、重置与基础排版 ---------- */
:root {
  --c-deep: #0A192F;
  --c-deep-2: #112240;
  --c-green: #00E676;
  --c-orange: #FF6D00;
  --c-indigo: #5C6BC0;
  --c-teal: #00BFA5;
  --c-text: #E6F1FF;
  --c-dim: #8892B0;
  --c-red: #FF4757;
  --c-yellow: #FFC312;
  --c-white: #FFFFFF;

  --font-body: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
  --font-display: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
  --font-num: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", "JetBrains Mono", Consolas, monospace;

  --size-h1: clamp(34px, 5vw, 52px);
  --size-h2: clamp(28px, 4vw, 40px);
  --size-h3: 22px;
  --size-body: 16px;
  --size-meta: 13px;

  --header-h: 64px;
  --header-total: 67px;
  --content-w: 1440px;
  --radius: 6px;
  --shadow-hard: 6px 6px 0 0 rgba(0, 0, 0, 0.35);
  --speed: 0.18s;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--c-deep);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: var(--size-body);
  line-height: 1.7;
}

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

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: 0.02em;
  color: var(--c-white);
}

h1 { font-size: var(--size-h1); }
h2 { font-size: var(--size-h2); }
h3 { font-size: var(--size-h3); }

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

a {
  color: var(--c-green);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--c-green);
}

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

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

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

::selection {
  background: var(--c-green);
  color: var(--c-deep);
}

/* ---------- 2. 通用工具与容器 ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: calc(100% - 48px);
  max-width: var(--content-w);
  margin-inline: auto;
}

@media (max-width: 640px) {
  .container {
    width: calc(100% - 24px);
  }
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 5000;
  display: inline-block;
  padding: 10px 18px;
  background: var(--c-orange);
  color: var(--c-deep);
  font-weight: 700;
  font-size: 14px;
  border-radius: var(--radius);
  border: 2px solid var(--c-white);
  box-shadow: var(--shadow-hard);
  transform: translateY(-220px);
  transition: transform 0.2s ease;
}

.skip-link:focus-visible {
  transform: translateY(0);
  text-decoration: none;
}

#main-content {
  scroll-margin-top: calc(var(--header-total) + 20px);
}

#main-content:focus {
  outline: none;
}

.note-vertical {
  writing-mode: vertical-rl;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--c-dim);
  text-transform: uppercase;
  white-space: nowrap;
}

/* ---------- 3. 命令栏头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 25, 47, 0.96);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.28);
}

.site-header::after {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--c-green) 0%, var(--c-teal) 32%, var(--c-indigo) 58%, var(--c-orange) 84%, var(--c-orange) 100%);
}

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

@media (max-width: 640px) {
  .commandbar__inner {
    width: calc(100% - 16px);
    gap: 8px;
  }
}

/* 品牌与品牌轨道 */
.brand {
  position: relative;
  padding-left: 16px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  color: var(--c-white);
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 36px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--c-green) 0%, var(--c-orange) 100%);
  box-shadow: 0 0 8px rgba(0, 230, 118, 0.4);
}

.brand__mark {
  display: inline-block;
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border: 2px solid var(--c-white);
  background: repeating-linear-gradient(-45deg, var(--c-green) 0 8px, var(--c-orange) 8px 16px, var(--c-teal) 16px 24px, var(--c-indigo) 24px 32px);
  transform: skewX(-8deg) rotate(-3deg);
  box-shadow: 3px 3px 0 rgba(0, 230, 118, 0.28);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.12em;
  color: var(--c-white);
}

.brand__tag {
  font-family: var(--font-num);
  font-size: 9px;
  letter-spacing: 0.24em;
  color: var(--c-green);
  margin-top: 4px;
  white-space: nowrap;
}

.brand--footer .brand__mark {
  width: 30px;
  height: 30px;
}

.brand--footer .brand__name {
  font-size: 18px;
}

/* 编号站点导航 */
.nav-track__list {
  display: flex;
  align-items: stretch;
  gap: 2px;
}

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

.nav-track__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 20px 12px;
  color: var(--c-dim);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  border-bottom: 3px solid transparent;
  transition: color var(--speed) ease, background var(--speed) ease, border-color var(--speed) ease;
}

.nav-track__link:hover,
.nav-track__link:focus-visible {
  color: var(--c-text);
  background: rgba(0, 230, 118, 0.05);
  border-bottom-color: rgba(0, 230, 118, 0.3);
  text-decoration: none;
}

.nav-track__link[aria-current="page"] {
  color: var(--c-green);
  border-bottom-color: var(--c-green);
  background: linear-gradient(180deg, transparent 0%, rgba(0, 230, 118, 0.07) 100%);
}

.nav-track__dot {
  width: 7px;
  height: 7px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--c-dim);
  transition: background var(--speed) ease, box-shadow var(--speed) ease;
}

.nav-track__link[aria-current="page"] .nav-track__dot {
  background: var(--c-orange);
  box-shadow: 0 0 10px var(--c-orange);
}

.nav-track__num {
  font-family: var(--font-num);
  font-size: 11px;
  font-weight: 700;
  color: var(--c-indigo);
  letter-spacing: 0.06em;
}

.nav-track__link[aria-current="page"] .nav-track__num {
  color: var(--c-orange);
}

.nav-track__text {
  display: inline-block;
}

@media (max-width: 1290px) {
  .nav-track__num {
    display: none;
  }

  .nav-track__link {
    gap: 6px;
    padding: 20px 10px;
  }
}

/* 操作区按钮 */
.commandbar__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--radius);
  border: 2px solid transparent;
  font-weight: 700;
  font-size: 14px;
  line-height: 1;
  text-decoration: none;
  transition: transform var(--speed) ease, box-shadow var(--speed) ease, background var(--speed) ease, color var(--speed) ease, border-color var(--speed) ease;
}

.btn:hover,
.btn:focus-visible {
  text-decoration: none;
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.25);
}

.btn:active {
  transform: translate(0, 0);
  box-shadow: none;
}

.btn--screen {
  background: var(--c-orange);
  border-color: var(--c-white);
  color: var(--c-deep);
  box-shadow: 4px 4px 0 rgba(255, 109, 0, 0.3);
}

.btn--screen:hover {
  background: var(--c-white);
  color: var(--c-deep);
  box-shadow: 5px 5px 0 rgba(255, 109, 0, 0.5);
}

.btn--fav {
  padding: 9px;
  border: 2px solid var(--c-dim);
  color: var(--c-yellow);
  background: rgba(255, 195, 18, 0);
}

.btn--fav:hover {
  border-color: var(--c-yellow);
  background: rgba(255, 195, 18, 0.08);
  box-shadow: 3px 3px 0 rgba(255, 195, 18, 0.25);
}

.btn--fav[aria-pressed="true"] {
  border-color: var(--c-yellow);
  background: rgba(255, 195, 18, 0.12);
  box-shadow: 3px 3px 0 rgba(255, 195, 18, 0.2);
}

.icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.icon--screen {
  stroke-linecap: square;
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 10px 9px;
  border: 2px solid var(--c-dim);
  border-radius: var(--radius);
  transition: border-color var(--speed) ease;
}

.nav-toggle:hover {
  border-color: var(--c-green);
}

.nav-toggle__line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--c-text);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 480px) {
  .btn--screen .icon {
    display: none;
  }

  .btn--screen {
    padding: 9px 12px;
  }

  .btn--fav {
    padding: 8px;
  }
}

/* ---------- 4. 移动端导航抽屉 ---------- */
@media (max-width: 1023.98px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-track {
    position: fixed;
    top: var(--header-total);
    left: 0;
    right: 0;
    z-index: 1500;
    padding: 12px 16px 16px;
    background: var(--c-deep-2);
    border-top: 3px solid var(--c-green);
    border-bottom: 2px solid var(--c-teal);
    box-shadow: 0 18px 30px rgba(0, 0, 0, 0.45);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-14px);
    max-height: calc(100vh - var(--header-total) - 8px);
    overflow-y: auto;
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s ease;
  }

  .nav-track[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-track__list {
    display: grid;
    gap: 2px;
  }

  .nav-track__item {
    width: 100%;
  }

  .nav-track__link {
    display: flex;
    width: 100%;
    padding: 14px 12px;
    font-size: 15px;
    border-bottom: 1px solid rgba(136, 146, 176, 0.18);
    border-left: 3px solid transparent;
    border-radius: 0;
  }

  .nav-track__link[aria-current="page"] {
    border-bottom-color: rgba(136, 146, 176, 0.18);
    border-left-color: var(--c-green);
    background: rgba(0, 230, 118, 0.06);
  }

  .nav-track__num {
    display: inline;
  }
}

/* ---------- 5. 滚动进度条 ---------- */
.progress-rail {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 4000;
  height: 3px;
  background: rgba(136, 146, 176, 0.12);
  pointer-events: none;
}

.progress-rail__bar {
  display: block;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--c-green), var(--c-teal) 70%, var(--c-orange));
  box-shadow: 0 0 12px rgba(0, 230, 118, 0.6);
}

/* ---------- 6. 面包屑 ---------- */
.breadcrumb {
  width: calc(100% - 48px);
  max-width: var(--content-w);
  margin: 16px auto 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--c-dim);
}

.breadcrumb a {
  color: var(--c-dim);
  transition: color var(--speed) ease;
}

.breadcrumb a:hover {
  color: var(--c-green);
}

.breadcrumb__sep {
  color: var(--c-orange);
  font-family: var(--font-num);
}

.breadcrumb__current {
  color: var(--c-text);
  font-weight: 500;
}

/* ---------- 7. 分区标题组 ---------- */
.section-head {
  max-width: 780px;
  margin-bottom: 40px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--c-orange);
  text-transform: uppercase;
}

.section-label::before {
  content: "";
  width: 32px;
  height: 3px;
  background: linear-gradient(90deg, var(--c-orange), var(--c-yellow));
}

.section-title {
  margin-top: 10px;
  font-size: var(--size-h2);
  color: var(--c-white);
}

.section-sub {
  margin-top: 12px;
  color: var(--c-dim);
  font-size: 16px;
  line-height: 1.7;
}

/* ---------- 8. 标签页 ---------- */
.tabs__bar {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid rgba(0, 230, 118, 0.25);
  overflow-x: auto;
  scrollbar-width: none;
}

.tabs__bar::-webkit-scrollbar {
  display: none;
}

.tabs__tab {
  padding: 10px 16px;
  font-weight: 700;
  font-size: 14px;
  color: var(--c-dim);
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  transition: color var(--speed) ease, border-color var(--speed) ease, background var(--speed) ease;
}

.tabs__tab:hover {
  color: var(--c-text);
  background: rgba(0, 230, 118, 0.04);
}

.tabs__tab[aria-selected="true"] {
  color: var(--c-green);
  border-bottom-color: var(--c-orange);
  background: rgba(0, 230, 118, 0.05);
}

.tabs__panel {
  padding: 24px 4px 4px;
}

.tabs__panel[hidden] {
  display: none;
}

/* ---------- 9. 数据卡、卡片与图例 ---------- */
.card {
  padding: 24px;
  background: var(--c-deep-2);
  border: 2px solid rgba(136, 146, 176, 0.35);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
}

.card--accent {
  border-left: 4px solid var(--c-green);
}

.card--flat {
  box-shadow: none;
  border-color: rgba(136, 146, 176, 0.2);
}

.stat-card {
  padding: 20px;
  background: var(--c-deep-2);
  border: 1px solid rgba(0, 191, 165, 0.35);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
}

.stat-card__num {
  font-family: var(--font-num);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--c-green);
  letter-spacing: -0.02em;
}

.stat-card__label {
  margin-top: 8px;
  font-size: var(--size-meta);
  color: var(--c-dim);
}

.stat-card--orange .stat-card__num { color: var(--c-orange); }
.stat-card--teal .stat-card__num { color: var(--c-teal); }
.stat-card--indigo .stat-card__num { color: var(--c-indigo); }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding: 12px 16px;
  background: rgba(17, 34, 64, 0.7);
  border: 1px solid rgba(0, 230, 118, 0.2);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--c-dim);
}

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

.legend__key {
  width: 10px;
  height: 10px;
  border-radius: 2px;
}

.legend__key--green { background: var(--c-green); }
.legend__key--orange { background: var(--c-orange); }
.legend__key--teal { background: var(--c-teal); }
.legend__key--indigo { background: var(--c-indigo); }

/* ---------- 10. 图片占位容器 ---------- */
.image-frame {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 180px;
  padding: 32px;
  background:
    linear-gradient(135deg, rgba(0, 230, 118, 0.06) 0%, rgba(0, 191, 165, 0.06) 50%, rgba(92, 107, 192, 0.08) 100%);
  background-color: var(--c-deep-2);
  border: 2px solid var(--c-dim);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.image-frame::before {
  content: attr(data-caption);
  position: absolute;
  top: 8px;
  left: 12px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-dim);
  text-transform: uppercase;
  z-index: 1;
}

.image-frame::after {
  content: "";
  position: absolute;
  right: -20%;
  bottom: -20%;
  width: 60%;
  height: 60%;
  background: linear-gradient(-45deg, transparent 48%, rgba(255, 109, 0, 0.35) 49%, rgba(255, 109, 0, 0.35) 51%, transparent 52%);
  transform: rotate(-6deg);
}

.image-frame--ratio {
  aspect-ratio: 16 / 9;
}

.image-frame--vertical {
  aspect-ratio: 3 / 4;
}

/* ---------- 11. 滚动显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

[data-reveal][data-revealed="true"] {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 12. 页脚 ---------- */
.site-footer {
  position: relative;
  background: var(--c-deep);
  border-top: 1px solid rgba(0, 230, 118, 0.18);
}

.site-footer::before {
  content: "";
  display: block;
  height: 4px;
  background: linear-gradient(90deg, var(--c-orange) 0%, var(--c-orange) 12%, var(--c-indigo) 12%, var(--c-indigo) 28%, var(--c-teal) 28%, var(--c-teal) 48%, var(--c-green) 48%, var(--c-green) 72%, var(--c-white) 72%, var(--c-white) 80%, transparent 80%);
  opacity: 0.85;
}

.site-footer::after {
  content: "";
  position: absolute;
  top: 4px;
  right: 0;
  width: 42%;
  height: 100%;
  background: repeating-linear-gradient(-35deg, transparent 0 18px, rgba(0, 230, 118, 0.035) 18px 36px);
  pointer-events: none;
}

.footer-grid {
  width: calc(100% - 48px);
  max-width: var(--content-w);
  margin-inline: auto;
  padding: 64px 0 40px;
  display: grid;
  grid-template-columns: 1.5fr 0.9fr 1.1fr;
  gap: 48px;
  align-items: start;
  position: relative;
  z-index: 1;
}

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

.footer-desc {
  margin-top: 16px;
  color: var(--c-dim);
  font-size: 14px;
  line-height: 1.7;
}

.footer-trust {
  margin-top: 20px;
  padding: 16px;
  border-left: 3px solid var(--c-green);
  background: rgba(0, 230, 118, 0.05);
  color: var(--c-dim);
  font-size: 13px;
  line-height: 1.7;
}

.footer-col__title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--c-yellow);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-col__title::after {
  content: "";
  flex: 1;
  height: 2px;
  background: linear-gradient(90deg, var(--c-yellow), transparent);
}

.link-list {
  display: grid;
  gap: 8px;
}

.link-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--c-dim);
  font-size: 14px;
  transition: color var(--speed) ease, transform var(--speed) ease;
}

.link-list a::before {
  content: "→";
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--c-green);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity var(--speed) ease, transform var(--speed) ease;
}

.link-list a:hover {
  color: var(--c-text);
  text-decoration: none;
  transform: translateX(4px);
}

.link-list a:hover::before {
  opacity: 1;
  transform: translateX(0);
}

.footer-contact__list {
  display: grid;
  gap: 10px;
}

.footer-contact__item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.6;
}

.footer-contact__label {
  flex-shrink: 0;
  min-width: 40px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-teal);
  padding-top: 3px;
  text-transform: uppercase;
}

.footer-contact__value {
  color: var(--c-text);
  overflow-wrap: anywhere;
}

.footer-contact__note {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed rgba(136, 146, 176, 0.3);
  font-size: 12px;
  color: var(--c-dim);
}

.btn--ghost {
  margin-top: 16px;
  background: transparent;
  border: 2px solid var(--c-teal);
  color: var(--c-teal);
}

.btn--ghost:hover {
  background: var(--c-teal);
  color: var(--c-deep);
  box-shadow: var(--shadow-hard);
}

.btn--small {
  padding: 8px 14px;
  font-size: 13px;
}

.footer-bottom {
  position: relative;
  z-index: 1;
  padding: 18px 0;
  background: rgba(4, 13, 32, 0.55);
  border-top: 1px solid rgba(136, 146, 176, 0.16);
}

.footer-bottom__inner {
  width: calc(100% - 48px);
  max-width: var(--content-w);
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-copy,
.footer-icp {
  font-size: var(--size-meta);
  color: var(--c-dim);
  line-height: 1.6;
}

.footer-icp {
  font-family: var(--font-num);
  font-size: 12px;
  white-space: nowrap;
}

.footer-bottom__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom__legal a {
  color: var(--c-dim);
  font-size: var(--size-meta);
  transition: color var(--speed) ease;
}

.footer-bottom__legal a:hover {
  color: var(--c-green);
  text-decoration: none;
}

@media (max-width: 960px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-col--brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 800px) {
  .footer-bottom__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
    width: calc(100% - 24px);
    padding: 40px 0 32px;
  }
}

/* ---------- 13. 减弱动效 ---------- */
@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;
  }

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