/* ==========================================================================
   慧星体育 · 共享样式表 /assets/site.css
   深空蓝基底 + 彗尾青/亮橙/荧光黄绿三级强调 + 奶油纸阅读区
   ========================================================================== */

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

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

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

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

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

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

a { color: inherit; }

/* ---------- 2. Tokens ---------- */
:root {
  --space-blue: #0A1430;
  --night-blue: #14224A;
  --orbit: #1E2F63;
  --teal: #3BE3C6;
  --orange: #FF7A2F;
  --lime: #C9FF4D;
  --cream: #F3E9DA;
  --cream-line: #D8C7AE;
  --ink: #23180F;
  --brick: #C4472E;
  --slate: #7C89AD;
  --mist: #F7FAFF;

  --rail-w: 264px;
  --u: 8px;

  --r-a: 16px 5px 16px 5px;
  --r-b: 5px 16px 5px 16px;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui,
               -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas,
               "Liberation Mono", "Courier New", monospace;

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: .01em;
  color: var(--mist);
  background-color: var(--space-blue);
  background-image:
    radial-gradient(1100px 560px at 84% -6%, rgba(59, 227, 198, .16), transparent 62%),
    radial-gradient(860px 520px at 2% 96%, rgba(255, 122, 47, .12), transparent 60%);
  background-repeat: no-repeat;
  overflow-x: hidden;
}

body.nav-open { overflow: hidden; }

:focus-visible {
  outline: 3px solid var(--lime);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 300;
  padding: 12px 18px;
  font-size: 14px;
  font-weight: 800;
  color: var(--ink);
  background: var(--lime);
  border-radius: 10px 3px 10px 3px;
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform 180ms var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible { transform: none; }

.t-display {
  font-size: clamp(32px, 6.6vw, 76px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -.01em;
}

.t-h2 {
  font-size: clamp(24px, 3.4vw, 40px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.005em;
}

.t-h3 {
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 700;
  line-height: 1.3;
}

.lede {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(247, 250, 255, .82);
  max-width: 42em;
}

.caption {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--slate);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--slate);
}
.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brick);
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(20px, 4vw, 56px);
  line-height: 1;
  color: var(--lime);
}

.link-grow {
  position: relative;
  color: var(--mist);
  text-decoration: none;
  padding-bottom: 2px;
}
.link-grow::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--teal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 200ms var(--ease);
}
.link-grow:hover::after,
.link-grow:focus-visible::after { transform: scaleX(1); }

/* ---------- 4. 布局工具 ---------- */
.container {
  width: min(1180px, 100% - 48px);
  margin-inline: auto;
}

.section { padding-block: 56px; }
.section--tight { padding-block: 32px; }

.stack > * + * { margin-top: 16px; }

.grid { display: grid; gap: 24px; grid-template-columns: 1fr; }

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

@media (min-width: 900px) {
  .grid--7-5 { grid-template-columns: 7fr 5fr; }
  .grid--8-4 { grid-template-columns: 8fr 4fr; }
}

.trail {
  height: 2px;
  margin: 40px 0;
  border: 0;
  background: linear-gradient(90deg, var(--teal), var(--orange) 58%, transparent 96%);
  opacity: .85;
}

/* ---------- 5. 按钮 / 标签 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 12px 20px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: .02em;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 12px 4px 12px 4px;
  cursor: pointer;
  transition: transform 180ms var(--ease), background-color 180ms var(--ease),
              border-color 180ms var(--ease), color 180ms var(--ease);
}

.btn--orange {
  color: var(--ink);
  background: var(--orange);
}
.btn--orange:hover,
.btn--orange:focus-visible {
  background: #FF9551;
  transform: translateY(-3px);
}

.btn--teal {
  color: var(--teal);
  background: transparent;
  border-color: rgba(59, 227, 198, .6);
}
.btn--teal:hover,
.btn--teal:focus-visible {
  background: rgba(59, 227, 198, .12);
  transform: translateY(-3px);
}

.btn--ghost {
  color: var(--mist);
  background: transparent;
  border-color: var(--orbit);
}
.btn--ghost:hover,
.btn--ghost:focus-visible {
  color: var(--teal);
  border-color: var(--teal);
  transform: translateY(-3px);
}

.btn--block { width: 100%; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: #FFB9A3;
  background: rgba(196, 71, 46, .16);
  border: 1px solid rgba(196, 71, 46, .5);
  border-radius: 10px 3px 10px 3px;
}
.tag--teal {
  color: var(--teal);
  background: rgba(59, 227, 198, .12);
  border-color: rgba(59, 227, 198, .45);
}
.tag--lime {
  color: var(--lime);
  background: rgba(201, 255, 77, .12);
  border-color: rgba(201, 255, 77, .45);
}

/* ---------- 6. 面板与框景 ---------- */
.panel {
  padding: 24px;
  background: var(--night-blue);
  border: 1px solid var(--orbit);
  border-radius: 18px 6px 18px 6px;
}

.panel--cream {
  color: var(--ink);
  background: var(--cream);
  border-color: var(--cream-line);
}
.panel--cream .caption { color: #6C5C4A; }
.panel--cream a { color: var(--ink); }

.frame {
  position: relative;
  padding: 28px;
  background: linear-gradient(180deg, rgba(30, 47, 99, .55), rgba(10, 20, 48, .25));
  border: 1px solid var(--orbit);
  border-radius: 20px 6px 20px 6px;
}
.frame::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -9px;
  height: 8px;
  background-image: repeating-linear-gradient(90deg, var(--orbit) 0 1px, transparent 1px 16px);
  opacity: .9;
  pointer-events: none;
}
.frame--cut::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 58px;
  height: 1px;
  background: var(--teal);
  transform: rotate(45deg);
  transform-origin: top right;
  pointer-events: none;
}

/* ---------- 7. 媒体容器（页面阶段放图） ---------- */
.media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background-color: var(--night-blue);
  background-image:
    repeating-linear-gradient(135deg, rgba(59, 227, 198, .1) 0 2px, transparent 2px 18px),
    linear-gradient(160deg, #14224A, #0A1430);
  border: 1px solid var(--orbit);
  border-radius: 20px 6px 20px 6px;
}
.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 4 / 5; }
.media--square { aspect-ratio: 1 / 1; }

.media__caption {
  margin-top: 10px;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--slate);
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb {
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--slate);
}
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb li + li::before {
  content: "/";
  color: var(--orbit);
}
.breadcrumb a {
  color: var(--slate);
  text-decoration: none;
  transition: color 180ms var(--ease);
}
.breadcrumb a:hover,
.breadcrumb a:focus-visible { color: var(--teal); }
.breadcrumb [aria-current="page"] { color: var(--mist); }

/* ---------- 9. 头部：侧边轨道 ---------- */
.rail {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 80;
  width: var(--rail-w);
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 26px 20px 22px;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: linear-gradient(196deg, #0A1430 0%, #14224A 56%, #0A1430 100%);
  border-right: 1px solid var(--orbit);
}

.rail::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 6px;
  background-image: repeating-linear-gradient(180deg, rgba(59, 227, 198, .5) 0 2px, transparent 2px 18px);
  opacity: .5;
  pointer-events: none;
}

.rail__progress {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 4;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--teal), var(--lime) 58%, var(--orange));
  transition: width 120ms linear;
}

.rail__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  position: relative;
  z-index: 3;
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  color: var(--mist);
  text-decoration: none;
}

.brand__mark {
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  font-size: 20px;
  font-weight: 900;
  line-height: 1;
  color: var(--space-blue);
  background: conic-gradient(from 215deg, var(--teal), var(--lime) 38%, var(--orange) 72%, var(--teal));
  border-radius: 14px 4px 14px 4px;
  clip-path: polygon(0 0, 100% 6%, 100% 100%, 7% 93%);
}

.brand__meta {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand__name {
  font-size: 19px;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: .02em;
}

.brand__tagline {
  font-size: 11.5px;
  line-height: 1.5;
  letter-spacing: .02em;
  color: var(--slate);
}

/* 抽屉按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  padding: 9px 14px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--mist);
  background: rgba(30, 47, 99, .65);
  border: 1px solid var(--orbit);
  border-radius: 12px 4px 12px 4px;
  cursor: pointer;
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}
.nav-toggle:hover,
.nav-toggle:focus-visible {
  color: var(--teal);
  border-color: var(--teal);
}

.nav-toggle__icon {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}
.nav-toggle__icon i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 200ms var(--ease), width 200ms var(--ease), opacity 160ms var(--ease);
}
.nav-toggle__icon i:nth-child(1) { width: 18px; }
.nav-toggle__icon i:nth-child(2) { width: 12px; }
.nav-toggle__icon i:nth-child(3) { width: 15px; }

.rail[data-open="true"] .nav-toggle__icon i:nth-child(1) { width: 18px; transform: translateY(6px) rotate(45deg); }
.rail[data-open="true"] .nav-toggle__icon i:nth-child(2) { opacity: 0; }
.rail[data-open="true"] .nav-toggle__icon i:nth-child(3) { width: 18px; transform: translateY(-6px) rotate(-45deg); }

/* 导航 */
.rail__nav {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
}

.rail__nav-title {
  position: relative;
  padding-left: 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--slate);
}
.rail__nav-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 12px;
  height: 2px;
  background: var(--teal);
  transform: translateY(-50%);
}

.nav-list {
  counter-reset: railnav;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.nav-list li { counter-increment: railnav; }

.nav-list a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 11px 12px 11px 20px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .02em;
  color: rgba(247, 250, 255, .78);
  text-decoration: none;
  border-radius: 12px 4px 12px 4px;
  transition: color 180ms var(--ease), background-color 180ms var(--ease);
}
.nav-list a::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 50%;
  width: 4px;
  height: 4px;
  border-radius: 2px;
  background: var(--orbit);
  transform: translateY(-50%);
  transition: height 200ms var(--ease), background-color 200ms var(--ease);
}
.nav-list a::after {
  content: "0" counter(railnav);
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: rgba(124, 137, 173, .8);
}
.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--mist);
  background-color: rgba(59, 227, 198, .07);
}
.nav-list a:hover::before,
.nav-list a:focus-visible::before {
  height: 24px;
  background: var(--teal);
}
.nav-list a[aria-current="page"] {
  color: var(--teal);
  background-color: rgba(59, 227, 198, .1);
}
.nav-list a[aria-current="page"]::before {
  height: 24px;
  background: var(--teal);
}
.nav-list a[aria-current="page"]::after { color: var(--lime); }

/* 轨道底部 */
.rail__foot {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 18px;
  border-top: 1px solid rgba(30, 47, 99, .9);
}

.rail__hint {
  padding-left: 12px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .03em;
  color: var(--slate);
  border-left: 2px solid var(--teal);
}

.rail__stamp {
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--slate);
}
.rail__stamp .mono {
  font-size: 13px;
  color: var(--lime);
}

/* ---------- 10. 页脚 ---------- */
.site-foot {
  position: relative;
  margin-top: 80px;
  overflow: hidden;
  background: linear-gradient(180deg, #0A1430 0%, #050C1F 100%);
  border-top: 1px solid var(--orbit);
}
.site-foot::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--orange), var(--teal) 38%, rgba(201, 255, 77, .9) 62%, transparent 96%);
}
.site-foot::after {
  content: "";
  position: absolute;
  top: -160px;
  right: -120px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(59, 227, 198, .16), transparent 68%);
  pointer-events: none;
}

.site-foot__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px 28px;
  padding: 56px 0 44px;
}

.foot-brand__text {
  margin-top: 16px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(247, 250, 255, .72);
  max-width: 34em;
}

.foot-brand__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 7px 12px;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--lime);
  background: rgba(201, 255, 77, .09);
  border: 1px solid rgba(201, 255, 77, .4);
  border-radius: 10px 3px 10px 3px;
}
.foot-brand__badge .mono {
  font-size: 14px;
  font-weight: 700;
}

.foot-cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 24px;
}

.foot-col__title {
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: .14em;
  color: var(--mist);
}
.foot-col__title::before {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  margin-bottom: 12px;
  background: var(--teal);
}

.foot-col__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 14px;
}
.foot-col__list a {
  position: relative;
  display: inline-block;
  padding-bottom: 2px;
  font-size: 14.5px;
  color: rgba(247, 250, 255, .72);
  text-decoration: none;
  transition: color 180ms var(--ease);
}
.foot-col__list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--teal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 200ms var(--ease);
}
.foot-col__list a:hover,
.foot-col__list a:focus-visible { color: var(--mist); }
.foot-col__list a:hover::after,
.foot-col__list a:focus-visible::after { transform: scaleX(1); }

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 14px;
}
.contact-list__row {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.contact-list dt {
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--slate);
}
.contact-list dd {
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(247, 250, 255, .86);
  word-break: break-word;
}
.contact-list dd.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.site-foot__bar {
  position: relative;
  z-index: 1;
  background: rgba(5, 12, 31, .72);
  border-top: 1px solid rgba(30, 47, 99, .9);
}
.site-foot__bar-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding: 18px 0 26px;
}
.site-foot__copy,
.site-foot__icp {
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--slate);
}
.site-foot__icp {
  font-family: var(--font-mono);
}

/* ---------- 11. 回到顶部 ---------- */
.to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--mist);
  background: var(--night-blue);
  border: 1px solid var(--orbit);
  border-radius: 12px 4px 12px 4px;
  cursor: pointer;
  transition: transform 180ms var(--ease), border-color 180ms var(--ease), color 180ms var(--ease);
}
.to-top:hover,
.to-top:focus-visible {
  color: var(--teal);
  border-color: var(--teal);
  transform: translateY(-3px);
}
.to-top[hidden] { display: none; }
.to-top__arrow {
  font-family: var(--font-mono);
  color: var(--teal);
}

/* ---------- 12. 显现（页面阶段给块加 data-reveal） ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}
.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 13. 移动 / 抽屉（<1024px） ---------- */
@media (max-width: 1023px) {
  .rail {
    position: sticky;
    inset: auto;
    top: 0;
    left: 0;
    right: 0;
    z-index: 80;
    width: 100%;
    height: auto;
    display: block;
    gap: 0;
    padding: 0;
    overflow: visible;
    background: linear-gradient(100deg, #0A1430, #14224A);
    border-right: 0;
    border-bottom: 1px solid var(--orbit);
  }
  .rail::after { display: none; }

  .rail__bar {
    padding: 10px 16px;
    background: #0E1B3E;
    border-bottom: 1px solid rgba(30, 47, 99, .9);
    z-index: 3;
  }

  .brand__tagline { display: none; }
  .brand__name { font-size: 17px; }
  .brand__mark { width: 36px; height: 36px; font-size: 18px; }

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

  .rail__nav {
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin: 0;
    padding: 92px 20px 230px;
    overflow-y: auto;
    background-color: var(--space-blue);
    background-image: radial-gradient(620px 420px at 86% 0%, rgba(59, 227, 198, .14), transparent 66%);
    transform: translateY(-102%);
    visibility: hidden;
    transition: transform 280ms var(--ease), visibility 0s linear 280ms;
  }

  .rail[data-open="true"] .rail__nav {
    transform: none;
    visibility: visible;
    transition: transform 280ms var(--ease), visibility 0s;
  }

  .nav-list a {
    font-size: 17px;
    padding: 14px 14px 14px 22px;
  }

  .rail__foot {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2;
    gap: 10px;
    padding: 14px 20px 22px;
    background: var(--night-blue);
    border-top: 1px solid var(--orbit);
    transform: translateY(112%);
    visibility: hidden;
    transition: transform 280ms var(--ease), visibility 0s linear 280ms;
  }
  .rail[data-open="true"] .rail__foot {
    transform: none;
    visibility: visible;
    transition: transform 280ms var(--ease), visibility 0s;
  }

  .to-top { right: 14px; bottom: 14px; }
  .to-top__text { display: none; }
}

/* ---------- 14. 桌面端内容偏移 ---------- */
@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }
}

/* ---------- 15. 页脚栅格分档 ---------- */
@media (min-width: 640px) {
  .site-foot__inner { grid-template-columns: 1fr 1fr; }
  .foot-brand { grid-column: 1 / -1; }
}

@media (min-width: 1000px) {
  .site-foot__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1.6fr) minmax(0, 1fr);
  }
  .foot-brand { grid-column: auto; }
}

/* ---------- 16. 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .js [data-reveal] { opacity: 1; transform: none; }
  .btn:hover,
  .to-top:hover { transform: none; }
}