/* =========================================================
   B体育入口 · 共享样式表 /assets/site.css
   分区：1 重置 2 变量 3 排版 4 布局 5 跳转 6 轨道页头
        7 按钮 8 页脚 9 通用组件 10 状态与动效 11 响应式
   ========================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

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

ul, ol { list-style: none; }

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

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

input, textarea, select { font: inherit; }

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

hr { border: 0; }

/* ---------- 2. 设计变量 ---------- */
:root {
  --ink: #070C16;
  --paper: #F5F2E9;
  --deep: #0B1B3A;
  --night: #132B58;
  --lime: #C8FF4D;
  --violet: #7B61FF;
  --orange: #FF7A33;
  --stone: #8C9198;
  --moss: #4E6B52;
  --clay: #C4643B;

  --body-text: #252C3A;
  --body-soft: #4B5364;

  --rail-w: 248px;
  --shell-max: 1280px;
  --gutter: clamp(1.15rem, 4vw, 3.25rem);

  --r-xl: 42px;
  --r-lg: 26px;
  --r-md: 16px;
  --r-sm: 10px;
  --pill: 999px;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC",
    "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", "SF Mono", "JetBrains Mono", "Roboto Mono",
    Menlo, Consolas, "Courier New", monospace;

  --t-fast: 160ms;
  --t-base: 210ms;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

body {
  min-height: 100%;
  background-color: var(--paper);
  color: var(--body-text);
  font-family: var(--font-sans);
  font-size: clamp(1rem, 0.95rem + 0.22vw, 1.125rem);
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- 3. 排版构件 ---------- */
.display {
  font-weight: 250;
  font-size: clamp(2.75rem, 7.6vw, 7rem);
  line-height: 1.03;
  letter-spacing: -0.03em;
  color: var(--deep);
}

.display--tight { line-height: 0.94; }

.display strong,
.display b {
  font-weight: 800;
  letter-spacing: -0.02em;
}

.display em {
  font-style: normal;
  color: var(--moss);
}

.headline {
  font-weight: 300;
  font-size: clamp(1.65rem, 3vw, 2.5rem);
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--deep);
}

.lede {
  max-width: 36ch;
  font-size: clamp(1.0625rem, 1rem + 0.3vw, 1.25rem);
  line-height: 1.82;
  color: var(--body-soft);
}

.prose { max-width: 38ch; }

.prose > * + * { margin-top: 1.05em; }

.prose h2,
.prose h3 {
  font-weight: 300;
  letter-spacing: -0.01em;
  color: var(--deep);
  line-height: 1.3;
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

.data-figure {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--deep);
  transition: transform var(--t-base) var(--ease);
}

.data-figure:hover { transform: translateY(-3px); }

.data-figure--xl { font-size: clamp(2.75rem, 8vw, 5.5rem); }
.data-figure--lg { font-size: clamp(2rem, 5vw, 3.25rem); }
.data-figure--hot { color: var(--orange); }
.data-figure--accent { color: var(--moss); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  line-height: 1;
  color: var(--moss);
}

.eyebrow::before {
  content: "";
  width: 1.75rem;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  opacity: 0.55;
}

.eyebrow--lime { color: var(--lime); }
.eyebrow--stone { color: var(--stone); }

.section-tag {
  display: inline-block;
  padding: 0.34rem 0.8rem;
  border: 1px solid rgba(78, 107, 82, 0.32);
  border-radius: var(--pill);
  background: rgba(78, 107, 82, 0.09);
  color: var(--moss);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  line-height: 1.5;
}

.divider {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, rgba(140, 145, 152, 0.5), rgba(140, 145, 152, 0) 74%);
}

/* ---------- 4. 布局 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(0.9rem, 2vw, 1.6rem);
}

.span-full { grid-column: 1 / -1; }

/* ---------- 5. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 200;
  padding: 0.65rem 1.1rem;
  border-radius: var(--pill);
  background: var(--lime);
  color: var(--deep);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  transform: translateY(-240%);
  transition: transform var(--t-fast) var(--ease);
}

.skip-link:focus-visible {
  transform: translateY(0);
  outline-color: var(--deep);
}

/* ---------- 6. 轨道页头 ---------- */
.site-rail {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--deep);
  color: var(--paper);
  border-bottom: 1px solid rgba(200, 255, 77, 0.16);
}

.site-rail__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  min-height: 62px;
  padding: 0.7rem var(--gutter);
}

.site-rail__brand {
  flex: 0 1 auto;
  min-width: 0;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  min-width: 0;
}

.brand-lockup__mark {
  position: relative;
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  border-radius: 12px;
  overflow: hidden;
  background: linear-gradient(145deg, var(--lime) 0%, #86D93C 48%, var(--violet) 100%);
  box-shadow: 0 8px 22px -14px rgba(200, 255, 77, 0.9);
  transition: transform var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

.brand-lockup__mark::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 27, 58, 0) 52%, rgba(11, 27, 58, 0.6) 52%);
}

.brand-lockup__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--deep);
  transform: translate(-50%, -50%);
}

.brand-lockup:hover .brand-lockup__mark {
  transform: translateY(-2px) rotate(-4deg);
  box-shadow: 0 14px 26px -14px rgba(200, 255, 77, 1);
}

.brand-lockup__text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

.brand-lockup__name {
  font-size: 1.0625rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.1;
  color: var(--paper);
  white-space: nowrap;
}

.brand-lockup__tagline {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.22em;
  line-height: 1;
  color: var(--lime);
  white-space: nowrap;
}

.nav-toggle {
  position: relative;
  z-index: 95;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.9rem 0.5rem 0.8rem;
  border: 1px solid rgba(200, 255, 77, 0.3);
  border-radius: var(--pill);
  background: rgba(245, 242, 233, 0.05);
  color: var(--paper);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  transition: border-color var(--t-fast) var(--ease),
    color var(--t-fast) var(--ease),
    background var(--t-fast) var(--ease);
}

.nav-toggle:hover {
  border-color: var(--lime);
  color: var(--lime);
  background: rgba(200, 255, 77, 0.09);
}

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

.nav-toggle__bars span {
  display: block;
  height: 1.5px;
  border-radius: 2px;
  background: currentColor;
  transition: transform var(--t-base) var(--ease), opacity var(--t-base) var(--ease);
}

.site-rail[data-open] .nav-toggle__bars span:first-child {
  transform: translateY(2.75px) rotate(45deg);
}

.site-rail[data-open] .nav-toggle__bars span:last-child {
  transform: translateY(-2.75px) rotate(-45deg);
}

.nav-toggle__label { white-space: nowrap; }

.rail-nav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  width: min(320px, 86vw);
  padding: 5.5rem 1.25rem 2rem;
  background: var(--deep);
  border-right: 1px solid rgba(200, 255, 77, 0.2);
  border-radius: 0 30px 30px 0;
  overflow-y: auto;
  transform: translateX(-104%);
  transition: transform var(--t-base) var(--ease);
}

.site-rail[data-open] .rail-nav { transform: translateX(0); }

.rail-nav__list {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.rail-nav__item { display: block; }

.rail-nav__link {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  align-items: center;
  gap: 0.55rem;
  padding: 0.62rem 0.8rem;
  border-radius: var(--r-sm);
  color: rgba(245, 242, 233, 0.82);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  box-shadow: inset 2px 0 0 0 rgba(200, 255, 77, 0);
  transition: background var(--t-fast) var(--ease),
    color var(--t-fast) var(--ease),
    box-shadow var(--t-fast) var(--ease),
    padding-left var(--t-fast) var(--ease);
}

.rail-nav__link:hover {
  background: rgba(200, 255, 77, 0.08);
  color: var(--lime);
  box-shadow: inset 2px 0 0 0 var(--lime);
  padding-left: 1rem;
}

.rail-nav__link[aria-current="page"] {
  background: var(--night);
  color: var(--lime);
  box-shadow: inset 2px 0 0 0 var(--lime);
}

.rail-nav__index {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: rgba(140, 145, 152, 0.95);
  transition: color var(--t-fast) var(--ease);
}

.rail-nav__link:hover .rail-nav__index,
.rail-nav__link[aria-current="page"] .rail-nav__index { color: var(--lime); }

.rail-nav__label {
  display: block;
  min-width: 0;
}

.rail-nav__aside {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(245, 242, 233, 0.12);
}

.rail-nav__meta {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.rail-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--lime), var(--violet));
  transform: scaleX(0);
  transform-origin: 0 50%;
}

.site-rail::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 85;
  background: rgba(7, 12, 22, 0.66);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t-base) var(--ease), visibility var(--t-base) var(--ease);
}

.site-rail[data-open]::after {
  opacity: 1;
  visibility: visible;
}

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.72rem 1.3rem;
  border: 1px solid transparent;
  border-radius: var(--pill);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.4;
  text-align: center;
  transition: background var(--t-fast) var(--ease),
    color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease),
    transform var(--t-fast) var(--ease),
    box-shadow var(--t-fast) var(--ease);
}

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

.btn--accent {
  background: var(--lime);
  color: var(--deep);
}

.btn--accent:hover {
  background: #DAFF84;
  box-shadow: 0 14px 32px -18px rgba(200, 255, 77, 0.95);
}

.btn--ghost {
  border-color: rgba(245, 242, 233, 0.32);
  color: var(--paper);
}

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

.btn--ink {
  background: var(--deep);
  color: var(--paper);
}

.btn--ink:hover {
  background: var(--night);
  color: var(--lime);
}

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

/* ---------- 8. 页脚 ---------- */
.site-footer {
  position: relative;
  isolation: isolate;
  margin-top: clamp(4rem, 9vw, 7rem);
  padding: clamp(3rem, 6vw, 5rem) 0 1.75rem;
  background: var(--deep);
  color: rgba(245, 242, 233, 0.82);
  border-radius: var(--r-xl) var(--r-xl) 0 0;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  z-index: 2;
  background: linear-gradient(90deg, var(--lime), var(--violet) 46%, rgba(123, 97, 255, 0) 88%);
}

.site-footer::after {
  content: "";
  position: absolute;
  right: -25vmax;
  bottom: -32vmax;
  width: 60vmax;
  height: 60vmax;
  border-radius: 50%;
  z-index: -1;
  background: radial-gradient(circle, rgba(123, 97, 255, 0.26), rgba(123, 97, 255, 0) 62%);
  pointer-events: none;
}

.site-footer__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4vw, 3rem);
}

.footer-brand__name {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.footer-brand__tagline {
  margin-top: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--lime);
}

.footer-brand .btn { margin-top: 1.35rem; }

.footer-col__title {
  margin-bottom: 1rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--stone);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.footer-links a {
  display: inline-block;
  font-size: 0.9375rem;
  color: rgba(245, 242, 233, 0.78);
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease),
    transform var(--t-fast) var(--ease);
}

.footer-links a:hover {
  color: var(--lime);
  border-bottom-color: var(--lime);
  transform: translateX(3px);
}

.footer-col--contact {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-col--contact .footer-col__title { margin-bottom: 0.35rem; }

.copy-chip {
  display: block;
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid rgba(245, 242, 233, 0.14);
  border-radius: var(--r-sm);
  background: rgba(245, 242, 233, 0.05);
  text-align: left;
  transition: border-color var(--t-fast) var(--ease),
    background var(--t-fast) var(--ease),
    transform var(--t-fast) var(--ease);
}

.copy-chip:hover {
  border-color: var(--lime);
  background: rgba(200, 255, 77, 0.08);
  transform: translateY(-2px);
}

.copy-chip__key {
  display: block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.copy-chip__val {
  display: block;
  margin-top: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--paper);
  word-break: break-all;
}

.copy-chip__hint {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--lime);
  opacity: 0.8;
}

.footer-address {
  margin-top: 0.5rem;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--stone);
}

.footer-note {
  max-width: 30ch;
  font-size: 0.75rem;
  line-height: 1.7;
  color: rgba(140, 145, 152, 0.85);
}

.site-footer__mark {
  position: relative;
  z-index: 1;
  padding-top: clamp(1.5rem, 4vw, 3rem);
  overflow: hidden;
}

.footer-wordmark {
  font-size: clamp(3rem, 13vw, 10rem);
  font-weight: 200;
  line-height: 0.82;
  letter-spacing: -0.04em;
  color: rgba(245, 242, 233, 0.055);
  white-space: nowrap;
  user-select: none;
  pointer-events: none;
}

.site-footer__legal {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem 1.5rem;
  margin-top: clamp(1.75rem, 3vw, 2.5rem);
  padding-top: 1.4rem;
  border-top: 1px solid rgba(245, 242, 233, 0.12);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--stone);
}

.footer-legal__item { line-height: 1.7; }

/* ---------- 9. 通用组件 ---------- */
.placard {
  position: relative;
  padding: clamp(1.25rem, 2.6vw, 1.9rem);
  border: 1px solid rgba(200, 255, 77, 0.16);
  border-radius: var(--r-lg);
  background: var(--night);
  color: var(--paper);
  transition: transform var(--t-base) var(--ease),
    border-color var(--t-base) var(--ease),
    box-shadow var(--t-base) var(--ease);
}

.placard:hover {
  transform: translateY(-4px);
  border-color: rgba(200, 255, 77, 0.55);
  box-shadow: 0 28px 64px -38px rgba(7, 12, 22, 0.95);
}

.placard__label {
  display: block;
  margin-bottom: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--lime);
}

.placard__title {
  font-size: clamp(1.125rem, 2vw, 1.4rem);
  font-weight: 600;
  line-height: 1.35;
  color: var(--paper);
}

.placard__text {
  margin-top: 0.7rem;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: rgba(245, 242, 233, 0.74);
}

.placard--paper {
  background: #FFFFFF;
  border-color: rgba(11, 27, 58, 0.12);
  color: var(--body-text);
}

.placard--paper .placard__label { color: var(--moss); }
.placard--paper .placard__title { color: var(--deep); }
.placard--paper .placard__text { color: var(--body-soft); }

.media-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--night);
}

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

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame--curve {
  border-radius: clamp(48px, 14vw, 160px) clamp(48px, 14vw, 160px) var(--r-lg) var(--r-lg);
}

.media-frame--pitch {
  background:
    repeating-linear-gradient(90deg, rgba(200, 255, 77, 0.07) 0 12px, rgba(200, 255, 77, 0) 12px 26px),
    linear-gradient(160deg, var(--night) 0%, #0A1730 58%, #101F42 100%);
}

.media-frame--pitch::after {
  content: "";
  position: absolute;
  inset: auto 0 24% 0;
  height: 1px;
  background: rgba(200, 255, 77, 0.35);
}

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--stone);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: rgba(140, 145, 152, 0.6);
}

.breadcrumb__item a {
  color: var(--moss);
  transition: color var(--t-fast) var(--ease);
}

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

/* ---------- 10. 状态与动效 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}

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

:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
  border-radius: 6px;
}

.site-rail :focus-visible,
.site-footer :focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

/* ---------- 11. 响应式 ---------- */
@media (min-width: 640px) {
  .site-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .grid-12 { grid-template-columns: repeat(8, minmax(0, 1fr)); }
  .site-rail__inner { min-height: 68px; }
}

@media (min-width: 1024px) {
  html { scroll-padding-top: 2rem; }

  body { padding-left: var(--rail-w); }

  .grid-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

  .site-rail {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--rail-w);
    border-bottom: 0;
    border-right: 1px solid rgba(200, 255, 77, 0.16);
    border-radius: 0 40px 40px 0;
    overflow: hidden;
  }

  .site-rail__inner {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 2.25rem;
    height: 100%;
    min-height: 0;
    padding: 2rem 1.35rem 1.5rem;
    overflow-y: auto;
  }

  .nav-toggle { display: none; }

  .site-rail::after { display: none; }

  .rail-nav {
    position: static;
    flex: 1 1 auto;
    width: auto;
    min-height: 0;
    padding: 0;
    background: transparent;
    border: 0;
    border-radius: 0;
    overflow: visible;
    transform: none;
    transition: none;
  }

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

  .site-footer__grid {
    grid-template-columns: 1.5fr 1fr 1fr 1.45fr;
  }
}

@media (min-width: 1440px) {
  :root { --rail-w: 266px; }
  .site-footer__grid { gap: 3.5rem; }
}

@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;
  }

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

  .btn:hover,
  .placard:hover,
  .copy-chip:hover,
  .data-figure:hover { transform: none; }
}