/* ============================================================
   爱游戏赛场 · 共享样式 /assets/site.css
   夜间球场指挥中心：深墨绿底 + 暖纸内容层 + 荧光黄绿状态色
   ============================================================ */

/* ---------- 1. tokens ---------- */
:root {
  --ink-900: #0B1F1A;
  --ink-800: #0F2A23;
  --char-900: #121517;
  --char-800: #1A1E20;
  --paper: #F4EFE3;
  --ivory: #FDFBF5;
  --accent: #C8FF3D;
  --teal-deep: #1F4F42;
  --red: #E5484D;
  --yellow: #F5C518;
  --gray: #6B7A76;
  --data: #5ED3C0;
  --ink-text: #12211C;
  --ink-text-soft: #4A5C55;
  --line-dark: rgba(244, 239, 227, 0.14);
  --line-light: rgba(11, 31, 26, 0.14);
  --glass: rgba(31, 79, 66, 0.34);
  --shell: 1240px;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 18px 40px -26px rgba(0, 0, 0, 0.7);
  --dur: 0.32s;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --font-sans: "HarmonyOS Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ---------- 2. reset & base ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 9rem;
  background: var(--ink-900);
}

body {
  margin: 0;
  min-height: 100vh;
  background: transparent;
  color: var(--paper);
  font: 400 16px/1.75 var(--font-sans);
  letter-spacing: 0.01em;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    radial-gradient(70rem 50rem at 86% -14%, rgba(200, 255, 61, 0.13), transparent 62%),
    radial-gradient(55rem 45rem at -4% 6%, rgba(31, 79, 66, 0.62), transparent 66%),
    repeating-linear-gradient(90deg, rgba(244, 239, 227, 0.035) 0 1px, transparent 1px 84px),
    repeating-linear-gradient(0deg, rgba(244, 239, 227, 0.035) 0 1px, transparent 1px 84px);
}

h1, h2, h3, h4, h5, h6, p, ul, ol, dl, dd, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; }
img, svg, video { max-width: 100%; }
button { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--data);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 3. layout primitives ---------- */
.shell {
  width: min(var(--shell), 100% - (var(--gutter) * 2));
  margin-inline: auto;
}

#main-content { position: relative; z-index: 1; display: block; }

.section { padding: clamp(2.5rem, 6vw, 5rem) 0; }
.section--tight { padding: clamp(1.5rem, 3vw, 2.25rem) 0; }

.grid { display: grid; gap: clamp(1rem, 2.5vw, 1.75rem); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); }
.grid--split { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); }

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

/* ---------- 4. typography ---------- */
.display {
  margin: 0;
  font-size: clamp(2rem, 6vw, 4.25rem);
  line-height: 1.04;
  font-weight: 900;
  letter-spacing: -0.015em;
}

.heading {
  margin: 0;
  font-size: clamp(1.4rem, 3.2vw, 2.3rem);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.005em;
}

.lede {
  margin: 0;
  max-width: 58ch;
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  line-height: 1.85;
  color: rgba(244, 239, 227, 0.76);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: currentColor;
  opacity: 0.8;
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.prose {
  max-width: 72ch;
  font-size: 1.02rem;
  line-height: 1.85;
  color: inherit;
}
.prose > * + * { margin-top: 1.1em; }
.prose h2 { font-size: clamp(1.35rem, 2.6vw, 1.9rem); line-height: 1.3; font-weight: 800; }
.prose h3 { font-size: 1.1rem; font-weight: 700; }
.prose ul, .prose ol { padding-left: 1.25rem; list-style: disc; }
.prose ol { list-style: decimal; }
.prose a {
  text-decoration: underline;
  text-decoration-color: var(--data);
  text-underline-offset: 3px;
}

/* ---------- 5. layers / cards / tags ---------- */
.layer {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.layer--paper {
  background: var(--paper);
  color: var(--ink-text);
  padding: clamp(1.5rem, 4vw, 2.75rem);
  box-shadow: var(--shadow);
}
.layer--paper .lede { color: var(--ink-text-soft); }

.layer--glass {
  background: var(--glass);
  border: 1px solid var(--line-dark);
  color: var(--paper);
  padding: clamp(1.25rem, 3vw, 2rem);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
}

.card {
  position: relative;
  padding: 1.25rem 1.3rem;
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
  background: var(--ivory);
  color: var(--ink-text);
  box-shadow: 0 16px 32px -28px rgba(0, 0, 0, 0.7);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.card:hover { transform: translateY(-3px); box-shadow: 0 22px 40px -28px rgba(0, 0, 0, 0.75); }

.card--dark {
  background: var(--char-900);
  border-color: var(--line-dark);
  color: var(--paper);
}

.card--accent-border { border-color: rgba(200, 255, 61, 0.5); }

.card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--gray);
}
.card--dark .card__meta { color: rgba(244, 239, 227, 0.55); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.55rem;
  border: 1px solid currentColor;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.5;
}
.tag--accent { color: var(--accent); }
.tag--teal { color: var(--data); }
.tag--red { color: var(--red); }
.tag--yellow { color: #A87E00; }
.tag--solid {
  background: var(--accent);
  border-color: transparent;
  color: var(--ink-900);
}

/* ---------- 6. media frames ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  background-color: var(--char-900);
  background-image:
    linear-gradient(135deg, rgba(31, 79, 66, 0.85), rgba(18, 21, 23, 0.96) 70%),
    radial-gradient(24rem 16rem at 78% 8%, rgba(200, 255, 61, 0.18), transparent 70%);
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(244, 239, 227, 0.07) 0 1px, transparent 1px 52px),
    repeating-linear-gradient(0deg, rgba(244, 239, 227, 0.07) 0 1px, transparent 1px 52px);
}

.media-frame img,
.media-frame video {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.media-frame__caption {
  position: absolute;
  left: 0.8rem;
  bottom: 0.8rem;
  z-index: 2;
  max-width: calc(100% - 1.6rem);
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--line-dark);
  border-radius: 8px;
  background: rgba(11, 31, 26, 0.78);
  color: var(--paper);
  font-size: 0.76rem;
  line-height: 1.6;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* ---------- 7. breadcrumbs ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 1.1rem;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: rgba(244, 239, 227, 0.6);
}
.breadcrumbs li { display: inline-flex; align-items: center; gap: 0.4rem; }
.breadcrumbs li + li::before {
  content: "/";
  color: rgba(244, 239, 227, 0.3);
}
.breadcrumbs a { text-decoration: none; }
.breadcrumbs a:hover { color: var(--accent); }

/* ---------- 8. buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.62rem 1.15rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn--accent {
  background: var(--accent);
  color: var(--ink-900);
  box-shadow: 0 14px 28px -18px rgba(200, 255, 61, 0.9);
}
.btn--accent:hover { background: #d9ff70; transform: translateY(-1px); }
.btn--ghost {
  border-color: var(--line-dark);
  background: transparent;
  color: var(--paper);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn--quiet {
  border-color: var(--line-light);
  background: transparent;
  color: var(--ink-text);
}
.btn--quiet:hover { border-color: var(--teal-deep); color: var(--teal-deep); }

/* ---------- 9. skip link ---------- */
.skip-link {
  position: fixed;
  top: -5rem;
  left: 1rem;
  z-index: 90;
  padding: 0.65rem 1.05rem;
  border-radius: 0 0 10px 10px;
  background: var(--accent);
  color: var(--ink-900);
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: 0; }

/* ---------- 10. header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
}

.header-top {
  background: linear-gradient(90deg, rgba(18, 21, 23, 0.97), rgba(11, 31, 26, 0.94) 52%, rgba(31, 79, 66, 0.9));
  border-bottom: 1px solid var(--line-dark);
}

.header-top__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 56px;
  padding: 0.5rem 0;
}

.header-bar {
  background: rgba(11, 31, 26, 0.82);
  border-bottom: 1px solid var(--line-dark);
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
}

.header-bar__inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  min-height: 58px;
  padding: 0.45rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--paper);
  text-decoration: none;
}

.brand__mark {
  flex: none;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--accent);
  box-shadow: 0 0 0 1px rgba(200, 255, 61, 0.4), 0 10px 22px -12px rgba(200, 255, 61, 0.9);
}

.brand__mark-line {
  display: block;
  width: 16px;
  height: 3px;
  border-radius: 1px;
  background: var(--ink-900);
  box-shadow: 0 -6px 0 var(--ink-900), 0 6px 0 var(--ink-900);
}

.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__name { font-size: 1.03rem; font-weight: 800; letter-spacing: 0.06em; }
.brand__sub {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.2em;
  color: rgba(244, 239, 227, 0.55);
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.32rem 0.8rem;
  border: 1px solid rgba(200, 255, 61, 0.35);
  border-radius: 999px;
  background: rgba(200, 255, 61, 0.08);
  color: var(--accent);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.status-chip__dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(200, 255, 61, 0.16);
  animation: statusPulse 2.8s var(--ease) infinite;
}

@keyframes statusPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.82); }
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.8rem;
  border: 1px solid var(--line-dark);
  border-radius: 10px;
  background: var(--glass);
  color: var(--paper);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
}

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform var(--dur) var(--ease);
}
.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-6px) rotate(-45deg); }

.site-nav { flex: 0 0 auto; margin-right: auto; }

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 0.1rem;
}

.site-nav__link {
  display: inline-block;
  padding: 0.5rem 0.72rem;
  border-radius: 8px;
  color: rgba(244, 239, 227, 0.78);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.site-nav__link:hover { color: var(--ivory); background: rgba(31, 79, 66, 0.6); }
.site-nav__link[aria-current="page"] {
  color: var(--ink-900);
  background: var(--accent);
  box-shadow: inset 0 0 0 1px rgba(11, 31, 26, 0.25);
}

.site-nav__footnote {
  display: none;
  margin: 0.7rem 0.2rem 0;
  color: rgba(244, 239, 227, 0.5);
  font-size: 0.78rem;
  line-height: 1.7;
}

.round-switch {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  max-width: min(42vw, 400px);
  padding: 0.28rem 0.5rem;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  background: var(--glass);
  overflow-x: auto;
  scrollbar-width: none;
  cursor: grab;
  -webkit-overflow-scrolling: touch;
}
.round-switch::-webkit-scrollbar { display: none; }
.round-switch.is-dragging { cursor: grabbing; }

.round-switch__label {
  flex: none;
  padding-inline: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(244, 239, 227, 0.5);
}

.round-pill {
  flex: none;
  padding: 0.26rem 0.6rem;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.round-pill:hover { background: var(--accent); color: var(--ink-900); }

.header-bar__cta { flex: none; }

/* ---------- 11. footer ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: clamp(3rem, 8vw, 6rem);
  border-top: 1px solid var(--line-dark);
  background: linear-gradient(180deg, rgba(18, 21, 23, 0.92), var(--char-900));
  color: var(--paper);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.85fr) minmax(0, 0.85fr) minmax(0, 1.25fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: clamp(2.5rem, 6vw, 4rem) 0 clamp(1.5rem, 4vw, 2.5rem);
}

.footer-brand { display: block; }
.brand--footer { margin-bottom: 1rem; }

.footer-note {
  max-width: 36ch;
  margin: 0 0 0.9rem;
  color: rgba(244, 239, 227, 0.68);
  font-size: 0.9rem;
  line-height: 1.8;
}

.footer-icp {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  color: rgba(244, 239, 227, 0.5);
}

.footer-heading {
  margin: 0 0 0.95rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
}

.footer-list { display: grid; gap: 0.55rem; }
.footer-list a {
  color: rgba(244, 239, 227, 0.78);
  font-size: 0.92rem;
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}
.footer-list a:hover { color: var(--accent); }

.footer-dl {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.45rem 0.9rem;
  font-size: 0.88rem;
}
.footer-dl dt {
  padding-top: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: rgba(244, 239, 227, 0.45);
}
.footer-dl dd {
  color: rgba(244, 239, 227, 0.85);
  word-break: break-word;
}

.site-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem 1.25rem;
  padding: 1.1rem 0 2rem;
  border-top: 1px solid var(--line-dark);
  font-size: 0.78rem;
  color: rgba(244, 239, 227, 0.55);
}

.footer-copy { margin: 0; }
.footer-version {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  color: var(--accent);
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}
.footer-base-link {
  margin-left: auto;
  color: rgba(244, 239, 227, 0.78);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}
.footer-base-link:hover { color: var(--accent); }

/* ---------- 12. injected utilities: progress & to-top ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 80;
  pointer-events: none;
  background: transparent;
}
.scroll-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--data), var(--accent));
  transition: width 0.12s linear;
}

.to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 70;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 0.95rem;
  border: 1px solid rgba(200, 255, 61, 0.42);
  border-radius: 999px;
  background: rgba(11, 31, 26, 0.92);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur);
}
.to-top[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.to-top__arrow { font-size: 0.95rem; line-height: 1; }

/* ---------- 13. reveal ---------- */
.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.js-ready [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 14. responsive ---------- */
@media (max-width: 1200px) {
  .site-nav__link { padding: 0.5rem 0.55rem; font-size: 0.86rem; }
  .round-switch { max-width: 30vw; }
}

@media (max-width: 1024px) {
  html { scroll-padding-top: 8rem; }

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

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

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-right: 0;
    padding: 0.9rem var(--gutter) 1.4rem;
    background: linear-gradient(180deg, rgba(11, 31, 26, 0.985), rgba(18, 21, 23, 0.985));
    border-bottom: 1px solid var(--line-dark);
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur);
  }
  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
  }
  .site-nav__list { flex-direction: column; align-items: stretch; gap: 0.15rem; }
  .site-nav__link {
    display: block;
    padding: 0.75rem 0.85rem;
    border-bottom: 1px solid rgba(244, 239, 227, 0.08);
    border-radius: 10px;
    font-size: 1rem;
  }
  .site-nav__footnote { display: block; }

  .header-bar__inner { flex-wrap: wrap; }
  .header-bar__cta { margin-left: auto; }
  .round-switch {
    order: 3;
    width: 100%;
    max-width: 100%;
    margin-top: 0.35rem;
    border-radius: 12px;
    padding: 0.4rem 0.5rem;
  }
  .round-switch__label { letter-spacing: 0.18em; }
}

@media (max-width: 900px) {
  .grid--split { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .header-top__inner { min-height: 52px; }
  .brand__sub { font-size: 0.6rem; letter-spacing: 0.14em; }
  .status-chip { font-size: 0.68rem; padding: 0.28rem 0.62rem; }
  .media-frame--tall { aspect-ratio: 4 / 5; }
  .site-footer__inner { grid-template-columns: 1fr; }
  .footer-dl { grid-template-columns: 1fr; gap: 0.15rem 0; }
  .footer-dl dd { margin-bottom: 0.5rem; }
  .footer-base-link { margin-left: 0; }
  .to-top { right: 0.9rem; bottom: 0.9rem; padding: 0.55rem 0.8rem; }
}

@media (max-width: 400px) {
  .brand__sub { display: none; }
  .nav-toggle__text { display: none; }
}

/* ---------- 15. reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .js-ready [data-reveal] { opacity: 1; transform: none; }
  .to-top { transition: none; }
  .card:hover { transform: none; }
  .btn--accent:hover { transform: none; }
}