/* ============================================================
   乐动看台 · 共享站点样式 /assets/site.css
   框架式导航 + 切角面板 + 夜场双色体系
   ============================================================ */

/* ---------- 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, figure, blockquote, dl, dd, ul, ol { margin: 0; }

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

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

button, input, select, textarea { font: inherit; color: inherit; }

a { color: inherit; }

/* ---------- 2. Tokens ---------- */
:root {
  --night: #0A1226;
  --stand: #14213D;
  --signal: #D93A1C;
  --signal-dark: #A92712;
  --cyan: #32E6D0;
  --concrete: #B9BEC9;
  --warm: #F5F2EA;
  --ink: #111318;
  --amber: #FFC857;

  --line: rgba(185, 190, 201, .18);
  --line-strong: rgba(185, 190, 201, .38);

  --bar-h: 70px;
  --rail-w: 8px;

  --font-display: "HarmonyOS Sans SC", "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-mono: "SFMono-Regular", "DIN Alternate", "Roboto Mono", "Courier New", ui-monospace, monospace;

  --ease: cubic-bezier(.22, .61, .36, 1);
  --cut: 16px;
}

/* ---------- 3. Base ---------- */
body {
  background: var(--night);
  color: var(--warm);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

::selection { background: var(--signal); color: var(--warm); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.02em;
}

h1 { font-size: clamp(34px, 5.2vw, 64px); }
h2 { font-size: clamp(27px, 3.6vw, 46px); }
h3 { font-size: clamp(20px, 2.3vw, 28px); }
h4 { font-size: clamp(17px, 1.6vw, 20px); font-weight: 700; letter-spacing: .01em; }

p { max-width: 72ch; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* 画册式超大细标题 */
.display {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(48px, 9vw, 136px);
  line-height: .9;
  letter-spacing: -.045em;
}

/* 比分牌式紧凑重标题 */
.headline {
  font-family: var(--font-display);
  font-weight: 800;
  font-stretch: condensed;
  font-size: clamp(30px, 4.6vw, 62px);
  line-height: .94;
  letter-spacing: -.035em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--signal);
  flex: 0 0 auto;
}

.section-index {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--cyan);
}

.data-text {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--concrete);
}

/* ---------- 4. Layout ---------- */
.wrap {
  width: 100%;
  max-width: 1560px;
  margin-inline: auto;
  padding-inline: clamp(18px, 4vw, 56px);
}

.wrap--narrow { max-width: 980px; }

.page-shell { padding-block: clamp(28px, 5vw, 72px); }

.split {
  display: grid;
  grid-template-columns: minmax(0, 38fr) minmax(0, 62fr);
  gap: clamp(20px, 3vw, 48px);
  align-items: start;
}

.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 32px);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--auto { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }

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

.rule--slant {
  height: 10px;
  border: 0;
  background: repeating-linear-gradient(115deg, var(--line-strong) 0 2px, transparent 2px 10px);
}

.surface-light {
  background: var(--warm);
  color: var(--ink);
}

.surface-light .section-index,
.surface-light .eyebrow { color: var(--signal); }

/* ---------- 5. Skip link ---------- */
.skip-link {
  position: fixed;
  top: 0;
  left: -9999px;
  z-index: 999;
  padding: 12px 22px;
  background: var(--cyan);
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
}

.skip-link:focus {
  left: 12px;
  top: 12px;
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

/* ---------- 6. Buttons ---------- */
.btn {
  --btn-bg: var(--signal);
  --btn-fg: var(--warm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55em;
  min-height: 48px;
  padding: 0 22px;
  border: 0;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: background-color .18s var(--ease), color .18s var(--ease), transform .18s var(--ease);
}

.btn:hover { --btn-bg: var(--signal-dark); }

.btn:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: -5px;
}

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--warm);
  box-shadow: inset 0 0 0 1px var(--line-strong);
}

.btn--ghost:hover {
  --btn-bg: transparent;
  --btn-fg: var(--cyan);
  box-shadow: inset 0 0 0 1px var(--cyan);
}

.btn--header {
  min-height: 44px;
  padding: 0 18px;
  font-size: 14px;
}

.btn-arrow {
  display: inline-block;
  transition: transform .2s var(--ease);
}

.btn:hover .btn-arrow { transform: translateX(3px); }

/* ---------- 7. Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--night);
  border-bottom: 1px solid var(--line);
  color: var(--warm);
}

/* 左侧看台栏杆：框架的一部分 */
.site-header::before {
  content: "";
  position: fixed;
  left: 0;
  top: var(--bar-h);
  bottom: 0;
  width: var(--rail-w);
  background: repeating-linear-gradient(180deg,
    rgba(217, 58, 28, .95) 0 10px,
    rgba(217, 58, 28, 0) 10px 22px);
  pointer-events: none;
  z-index: 150;
}

.header-bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 28px);
  min-height: var(--bar-h);
  padding-right: clamp(16px, 3vw, 44px);
  padding-left: calc(var(--rail-w) + clamp(16px, 3vw, 44px));
}

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

.brand-mark {
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
  background: var(--signal);
  clip-path: polygon(0 0, 100% 0, 100% 68%, 68% 100%, 0 100%);
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: .06em;
  line-height: 1;
}

.brand-tagline {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .2em;
  color: var(--concrete);
  line-height: 1;
}

.brand--footer .brand-name { font-size: 24px; }
.brand--footer .brand-tagline { font-size: 11px; }

/* 主导航 */
.primary-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: clamp(4px, 1.2vw, 18px);
}

.nav-list a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 4px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--concrete);
  text-decoration: none;
  transition: color .18s var(--ease);
}

.nav-list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 7px;
  height: 2px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform .22s var(--ease);
}

.nav-list a:hover { color: var(--warm); }
.nav-list a:hover::after { transform: scaleX(1); }

.nav-list a[aria-current="page"] { color: var(--warm); }

.nav-list a[aria-current="page"]::after {
  background: var(--cyan);
  transform: scaleX(1);
}

/* 移动面板专用项：桌面默认隐藏 */
.nav-list__cta { display: none; }
.nav-utility { display: none; }

/* 桌面右侧快捷区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.4vw, 20px);
  flex: 0 0 auto;
}

.header-actions::before {
  content: "";
  width: 1px;
  height: 22px;
  background: var(--line-strong);
  flex: 0 0 auto;
}

.header-utility {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--concrete);
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s var(--ease);
}

.header-utility:hover { color: var(--cyan); }

/* 汉堡按钮 */
.nav-toggle { display: none; }

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 18px;
  height: 13px;
}

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

/* 阅读进度 */
.scroll-meter {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--signal), var(--cyan));
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
}

/* ---------- 8. Footer ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(40px, 6vw, 96px);
  background: var(--stand);
  color: var(--warm);
  border-top: 1px solid var(--line);
}

.site-footer::before {
  content: "";
  display: block;
  height: 6px;
  background: repeating-linear-gradient(115deg,
    var(--signal) 0 16px,
    transparent 16px 34px);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, .72fr) minmax(0, .8fr) minmax(0, .72fr);
  gap: clamp(24px, 3.6vw, 56px);
  max-width: 1560px;
  margin-inline: auto;
  padding-right: clamp(20px, 4vw, 56px);
  padding-left: calc(var(--rail-w) + clamp(20px, 4vw, 56px));
  padding-top: clamp(36px, 5vw, 64px);
  padding-bottom: clamp(24px, 3.4vw, 44px);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.footer-note {
  max-width: 32ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--concrete);
}

.footer-cta { margin-top: 4px; }

.footer-col__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--cyan);
}

.footer-links li + li { margin-top: 2px; }

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  font-size: 14px;
  color: var(--concrete);
  text-decoration: none;
  transition: color .18s var(--ease);
}

.footer-links a::before {
  content: "";
  width: 0;
  height: 1px;
  background: var(--signal);
  transition: width .2s var(--ease);
}

.footer-links a:hover { color: var(--warm); }
.footer-links a:hover::before { width: 14px; }

.footer-contact li {
  font-size: 14px;
  line-height: 1.7;
  color: var(--concrete);
  word-break: break-word;
}

.footer-contact li + li { margin-top: 6px; }

.footer-contact__note {
  margin-top: 14px;
  max-width: 30ch;
  font-size: 12px;
  line-height: 1.7;
  color: var(--concrete);
  opacity: .82;
}

.footer-icp {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--concrete);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 28px;
  max-width: 1560px;
  margin-inline: auto;
  padding-right: clamp(20px, 4vw, 56px);
  padding-left: calc(var(--rail-w) + clamp(20px, 4vw, 56px));
  padding-top: 18px;
  padding-bottom: 26px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--concrete);
}

.footer-copy,
.footer-meta { max-width: none; }

/* ---------- 9. Breadcrumb ---------- */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--concrete);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
}

.breadcrumb li:not(:last-child)::after {
  content: "›";
  padding: 0 .55em;
  color: var(--signal);
}

.breadcrumb a {
  color: var(--concrete);
  text-decoration: none;
}

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

/* ---------- 10. Prose ---------- */
.prose {
  max-width: 74ch;
  font-size: 16.5px;
  line-height: 1.85;
}

.prose > * + * { margin-top: 1.05em; }
.prose h2 { margin-top: 1.9em; }
.prose h3 { margin-top: 1.5em; }

.prose ul,
.prose ol { margin-top: .8em; }

.prose ul li {
  position: relative;
  padding-left: 22px;
}

.prose ul li + li { margin-top: .45em; }

.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .8em;
  width: 9px;
  height: 2px;
  background: var(--signal);
}

.prose a {
  color: var(--cyan);
  text-underline-offset: 3px;
}

/* ---------- 11. Panel ---------- */
.panel {
  position: relative;
  background: var(--stand);
  border: 1px solid var(--line);
  padding: clamp(20px, 3vw, 32px);
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.panel--cut {
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

.panel--lift:hover {
  transform: translateY(-4px);
  border-color: var(--signal);
}

/* ---------- 12. Media ---------- */
.media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(50, 230, 208, .08), transparent 42%),
    var(--stand);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

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

.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--tall { aspect-ratio: 3 / 4; }

.media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--warm);
  background: linear-gradient(0deg, rgba(10, 18, 38, .94), rgba(10, 18, 38, 0));
}

.media__tag {
  position: absolute;
  top: 0;
  left: 0;
  padding: 8px 12px;
  background: var(--signal);
  color: var(--warm);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
}

.media--placeholder::after {
  content: attr(data-label);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--concrete);
  background: repeating-linear-gradient(135deg,
    rgba(185, 190, 201, .06) 0 12px,
    transparent 12px 24px);
}

/* ---------- 13. Tabs ---------- */
.tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: clamp(18px, 2.4vw, 28px);
}

.tab {
  min-height: 46px;
  padding: 0 20px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--concrete);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .02em;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: background-color .18s var(--ease), color .18s var(--ease), box-shadow .18s var(--ease);
}

.tab:hover { color: var(--warm); }

.tab[aria-selected="true"] {
  background: var(--stand);
  color: var(--warm);
  box-shadow: inset 0 -3px 0 0 var(--cyan);
}

.tab:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: -5px;
}

.tabpanel[hidden] { display: none; }

.tabpanel[data-active] {
  animation: ldPanelIn .22s var(--ease) both;
}

@keyframes ldPanelIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 14. Data strip ---------- */
.data-strip {
  overflow: hidden;
  background: var(--stand);
  border-block: 1px solid var(--line);
}

.data-strip__track {
  display: flex;
  align-items: center;
  gap: clamp(24px, 4vw, 64px);
  width: max-content;
  padding: 12px 0;
  animation: ldStrip 48s linear infinite;
}

.data-strip:hover .data-strip__track { animation-play-state: paused; }

@keyframes ldStrip {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- 15. Reveal & to-top ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .55s var(--ease), transform .55s var(--ease);
}

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

.to-top {
  position: fixed;
  right: clamp(12px, 2vw, 24px);
  bottom: clamp(12px, 2vw, 24px);
  z-index: 180;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 0;
  background: var(--signal);
  color: var(--warm);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% 68%, 68% 100%, 0 100%);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity .2s var(--ease), transform .2s var(--ease), background-color .18s var(--ease);
}

.to-top[data-visible] {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.to-top:hover { background: var(--signal-dark); }

.to-top:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: -5px;
}

/* ---------- 16. Responsive: header ---------- */
@media (max-width: 1040px) {
  :root { --rail-w: 0px; --bar-h: 62px; }

  .site-header::before { display: none; }

  .header-actions { display: none; }

  .primary-nav {
    position: fixed;
    top: var(--bar-h);
    left: 0;
    right: 0;
    max-height: calc(100vh - var(--bar-h));
    max-height: calc(100dvh - var(--bar-h));
    overflow-y: auto;
    display: none;
    flex-direction: column;
    justify-content: flex-start;
    padding: 10px clamp(16px, 5vw, 32px) 30px;
    background: var(--night);
    border-bottom: 3px solid var(--signal);
    box-shadow: 0 30px 60px rgba(0, 0, 0, .55);
  }

  [data-open] .primary-nav { display: flex; }

  .nav-list {
    flex: 1 1 auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-list > li { border-bottom: 1px solid var(--line); }

  .nav-list > li:last-child { border-bottom: 0; }

  .nav-list a {
    width: 100%;
    min-height: 52px;
    padding: 0 6px;
    font-size: 16px;
    color: var(--warm);
  }

  .nav-list a::after { display: none; }

  .nav-list a[aria-current="page"] {
    color: var(--cyan);
    box-shadow: inset 3px 0 0 0 var(--cyan);
    padding-left: 14px;
  }

  .nav-list__cta {
    display: block;
    margin-top: 18px;
    border-bottom: 0 !important;
  }

  .nav-list__cta .nav-cta {
    width: 100%;
    justify-content: space-between;
    padding: 0 22px;
    font-size: 15px;
    color: var(--warm);
  }

  .nav-utility {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 22px;
    padding-top: 18px;
    border-top: 1px solid var(--line);
  }

  .nav-utility a {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: .14em;
    color: var(--concrete);
    text-decoration: none;
  }

  .nav-utility a:hover { color: var(--cyan); }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
    min-height: 44px;
    padding: 0 14px;
    background: transparent;
    color: var(--warm);
    border: 1px solid var(--line-strong);
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: .16em;
    cursor: pointer;
    clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
    transition: color .18s var(--ease), border-color .18s var(--ease);
  }

  .nav-toggle:hover { color: var(--cyan); }

  .nav-toggle:focus-visible {
    outline: 3px solid var(--cyan);
    outline-offset: -5px;
  }

  [data-open] .nav-toggle__bars span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
  [data-open] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
  [data-open] .nav-toggle__bars span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

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

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

@media (max-width: 720px) {
  .footer-inner { grid-template-columns: minmax(0, 1fr); }
  .footer-base { flex-direction: column; align-items: flex-start; }
}

/* ---------- 17. Responsive: layout ---------- */
@media (max-width: 900px) {
  .split { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 720px) {
  .grid--2,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }

  .display { font-size: clamp(40px, 12vw, 64px); }
}

/* ---------- 18. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  .data-strip__track { animation: none; transform: none; }

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

  .btn:hover .btn-arrow { transform: none; }
}