:root {
  --color-surface: #f5f5f5;
  --color-surface-alt: #ececec;
  --color-surface-deep: #e0e0df;
  --color-ink: #48453c;
  --color-ink-soft: #6e6a5e;
  --color-ink-muted: #888477;
  --color-line: #d6d5d4;
  --color-primary: #837349;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #e5e3dd;
  --color-accent: #d34212;
  --color-accent-ink: #ffffff;
  --color-highlight: #efd5cc;
  --color-focus: #cb3606;
  --color-contrast-surface: #1a1814;
  --color-contrast-ink: #e7e6e4;
  --color-contrast-line: #474542;
  --color-contrast-accent: #eb4914;
  --overlay-scrim: linear-gradient(180deg, rgba(26, 24, 20, 0.35) 0%, rgba(26, 24, 20, 0.72) 55%, rgba(26, 24, 20, 0.92) 100%);
  --font-heading: "Songti SC", "Source Han Serif SC", "Noto Serif SC", SimSun, serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, Menlo, Consolas, monospace;
  --text-xs: 12.2px;
  --text-sm: 15.2px;
  --text-base: 17px;
  --text-lg: 21.2px;
  --text-xl: 26.6px;
  --text-2xl: 33.2px;
  --text-3xl: 41.5px;
  --text-4xl: 51.9px;
  --text-display: clamp(34px, 7.0vw, 90px);
  --text-figure: clamp(29px, 5.1vw, 65px);
  --weight-heading: 683;
  --weight-body: 400;
  --leading-body: 1.8;
  --leading-heading: 1.2;
  --tracking-heading: 0.005em;
  --radius-sm: 3px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-pill: 999px;
  --border-thin: 1px;
  --border-thick: 1px;
  --shadow-1: 0 1px 0 rgba(72, 69, 60, 0.12);
  --shadow-2: 0 2px 0 rgba(72, 69, 60, 0.18);
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --container: 1220px;
  --measure: 71ch;
  --gutter: 32px;
  --section-y: 73px;
  --section-y-lg: 102px;
}

/* ============ 1. reset ============ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  padding-top: 54px;
  background-color: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-body);
  line-height: var(--leading-body);
}
h1, h2, h3, h4, h5, h6, p, figure, blockquote { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
img, svg, video { display: block; max-width: 100%; }
:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; }
::selection { background-color: var(--color-highlight); color: var(--color-ink); }

/* ============ 2. layout ============ */
.wrap {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section { padding-block: var(--section-y); }
.section--lg { padding-block: var(--section-y-lg); }
.section--flush { padding-block: 0; }
.rule {
  border: 0;
  border-top: var(--border-thin) solid var(--color-line);
  margin: 0 var(--gutter);
}
.rule--flush { margin-inline: 0; }
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gutter);
}
.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-12 { grid-column: span 12; }
.stack > * + * { margin-top: var(--space-3); }
.cluster { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); }

/* ============ 3. typography ============ */
.display {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 1.02;
  letter-spacing: -0.01em;
}
.h-xl { font-size: var(--text-3xl); }
.h-lg { font-size: var(--text-2xl); }
.h-md { font-size: var(--text-xl); }
.h-sm { font-size: var(--text-lg); }
.eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.22em;
  color: var(--color-ink-muted);
}
.lede {
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--color-ink-soft);
  max-width: var(--measure);
}
.aux { font-size: var(--text-xs); line-height: 1.7; color: var(--color-ink-muted); }
.prose { max-width: var(--measure); }
.prose > * + * { margin-top: var(--space-2); }
.prose h2, .prose h3 { margin-top: var(--space-6); }
.prose li {
  position: relative;
  padding-left: var(--space-3);
  margin-top: var(--space-1);
}
.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 10px;
  height: var(--border-thin);
  background-color: var(--color-primary);
}
.prose a {
  border-bottom: var(--border-thin) solid var(--color-primary);
}
.prose a:hover { color: var(--color-accent); border-bottom-color: var(--color-accent); }
.figure {
  font-family: var(--font-mono);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
}
.figure--xl { font-size: var(--text-figure); }
.figure--lg { font-size: var(--text-3xl); }
.figure--md { font-size: var(--text-2xl); }

/* ============ 4. section head & index ============ */
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1) var(--space-2);
  margin-bottom: var(--space-4);
}
.index-num {
  font-family: var(--font-mono);
  font-size: var(--text-4xl);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: var(--color-primary);
}

/* ============ 5. paper panels ============ */
.panel {
  position: relative;
  padding: var(--space-3);
  background-color: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
}
.panel--paper { background-color: var(--color-surface); }
.panel--deep { background-color: var(--color-surface-deep); }
.panel--contrast {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-color: var(--color-contrast-line);
}
.panel--contrast h2, .panel--contrast h3, .panel--contrast h4 { color: var(--color-contrast-ink); }
.panel--stack { box-shadow: 7px 7px 0 color-mix(in srgb, var(--color-line) 88%, transparent), var(--shadow-1); }
.panel--stack-alt { box-shadow: -7px 7px 0 color-mix(in srgb, var(--color-surface-deep) 92%, transparent), var(--shadow-1); }
.panel--band {
  border-left: 6px solid var(--color-primary);
  border-radius: var(--radius-sm) var(--radius-lg) var(--radius-lg) var(--radius-sm);
}

/* ============ 6. stickers ============ */
.sticker {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary-soft);
  color: var(--color-ink-soft);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  line-height: 1.6;
  box-shadow: var(--shadow-1);
  transform: rotate(-1.5deg);
  transition: transform 0.22s ease;
}
.sticker:hover, .sticker:focus-within { transform: rotate(0deg); }
.sticker--highlight { background-color: var(--color-highlight); color: var(--color-ink); }
.sticker--primary { background-color: var(--color-primary); color: var(--color-primary-ink); }
.sticker--accent { background-color: var(--color-accent); color: var(--color-accent-ink); }
.sticker--corner {
  position: absolute;
  top: calc(-1 * var(--space-1));
  right: var(--space-2);
  transform: rotate(1.5deg);
}

/* ============ 7. buttons & chips ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 10px 18px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface);
  color: var(--color-ink);
  font-size: var(--text-sm);
  line-height: 1.4;
  box-shadow: var(--shadow-1);
  transition: transform 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease;
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: var(--shadow-2); }
.btn--primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.btn--accent {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}
.btn--ghost {
  background-color: transparent;
  color: var(--color-ink-soft);
  box-shadow: none;
}
.chip {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-pill);
  background-color: var(--color-surface);
  color: var(--color-ink-soft);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
}
.chip.is-active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

/* ============ 8. breadcrumb ============ */
.breadcrumb {
  padding-block: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}
.breadcrumb ol { display: flex; flex-wrap: wrap; align-items: center; }
.breadcrumb li + li::before {
  content: "/";
  margin-inline: 6px;
  color: var(--color-line);
}
.breadcrumb a {
  color: var(--color-ink-soft);
  border-bottom: var(--border-thin) solid transparent;
}
.breadcrumb a:hover { color: var(--color-accent); border-bottom-color: var(--color-accent); }

/* ============ 9. media frames ============ */
.media-frame {
  position: relative;
  overflow: hidden;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  background-color: var(--color-surface-deep);
  box-shadow: var(--shadow-1);
}
.media-frame img { width: 100%; height: 100%; object-fit: cover; }
.media-frame--16x9 { aspect-ratio: 16 / 9; }
.media-frame--4x3 { aspect-ratio: 4 / 3; }
.media-frame--3x2 { aspect-ratio: 3 / 2; }
.media-frame--1x1 { aspect-ratio: 1 / 1; }
.media-frame--21x9 { aspect-ratio: 21 / 9; }
.media-frame__scrim {
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
  pointer-events: none;
}
.media-frame__label {
  position: absolute;
  left: var(--space-2);
  right: var(--space-2);
  bottom: var(--space-2);
  color: var(--color-contrast-ink);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  line-height: 1.6;
}
.media-frame__tag {
  position: absolute;
  top: var(--space-2);
  left: var(--space-2);
}

/* ============ 10. header ============ */
.site-header { position: relative; z-index: 60; }

.skip-link {
  position: fixed;
  left: var(--space-2);
  top: -70px;
  z-index: 120;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  transition: top 0.2s ease;
}
.skip-link:focus { top: var(--space-1); }

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 110;
  pointer-events: none;
}
.scroll-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background-color: var(--color-accent);
}

.score-band {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 70;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}
.score-band__inner {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 54px;
  padding: 6px var(--space-2);
}
.score-band__live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: none;
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-contrast-ink);
}
.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: var(--radius-pill);
  background-color: var(--color-contrast-accent);
  animation: dot-pulse 1.9s ease-in-out infinite;
}
@keyframes dot-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.8); }
}
.score-band__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1 1 auto;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.score-band__list::-webkit-scrollbar { display: none; }
.score-item {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  flex: none;
  padding: 5px 10px;
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  background-color: color-mix(in srgb, var(--color-contrast-ink) 5%, transparent);
  font-size: var(--text-xs);
  color: var(--color-contrast-ink);
}
.score-item[hidden] { display: none; }
.score-item__league { color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent); letter-spacing: 0.08em; }
.score-item__teams { color: var(--color-contrast-ink); }
.score-item__figure {
  padding-inline: 2px;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
}
.score-item__sep { color: color-mix(in srgb, var(--color-contrast-ink) 55%, transparent); }
.score-item__state { color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent); }
.score-item.is-live .score-item__figure { color: var(--color-contrast-accent); }
.score-item.is-pulsing { animation: accent-pulse 240ms ease-out; }
@keyframes accent-pulse {
  0% { background-color: transparent; }
  45% { background-color: color-mix(in srgb, var(--color-accent) 20%, transparent); }
  100% { background-color: transparent; }
}
.league-tabs { display: flex; gap: 4px; flex: none; }
.league-tab {
  padding: 4px 10px;
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-pill);
  color: color-mix(in srgb, var(--color-contrast-ink) 72%, transparent);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}
.league-tab:hover { color: var(--color-contrast-ink); border-color: var(--color-contrast-accent); }
.league-tab.is-active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.band-hint {
  flex: none;
  padding-bottom: 2px;
  font-size: var(--text-xs);
  color: var(--color-contrast-accent);
  border-bottom: var(--border-thin) solid color-mix(in srgb, var(--color-contrast-accent) 50%, transparent);
}
.band-hint:hover { color: var(--color-contrast-ink); border-bottom-color: var(--color-contrast-ink); }

.nav-toggle { display: none; }

.rail {
  position: fixed;
  top: 54px;
  left: 0;
  bottom: 0;
  z-index: 80;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  width: 88px;
  padding: var(--space-3) 0 var(--space-2);
  background-color: var(--color-surface-alt);
  border-right: var(--border-thin) solid var(--color-line);
  overflow-y: auto;
  overflow-x: visible;
}
.rail__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  text-align: center;
}
.rail__mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  box-shadow: var(--shadow-1);
}
.rail__brand-text {
  width: 64px;
  font-size: 10px;
  line-height: 1.35;
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}
.rail__nav { width: 100%; }
.rail__list { display: flex; flex-direction: column; align-items: center; gap: 6px; width: 100%; }
.rail__link {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  width: 76px;
  padding: 9px 4px;
  border-left: 3px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--color-ink-soft);
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.rail__link:hover { background-color: var(--color-surface); color: var(--color-ink); }
.rail__link[aria-current="page"] {
  background-color: var(--color-surface);
  color: var(--color-ink);
  border-left-color: var(--color-primary);
}
.rail__glyph {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  line-height: 1;
}
.rail__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}
.rail__name {
  position: absolute;
  left: calc(100% + 12px);
  top: 50%;
  z-index: 5;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  font-size: var(--text-xs);
  white-space: nowrap;
  opacity: 0;
  transform: translateY(-50%) translateX(-6px);
  pointer-events: none;
  box-shadow: var(--shadow-2);
  transition: opacity 0.18s ease, transform 0.18s ease;
}
.rail__link:hover .rail__name,
.rail__link:focus-visible .rail__name {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}
.rail__stamp {
  margin-top: auto;
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--color-ink-muted);
  writing-mode: vertical-rl;
}

/* ============ 11. footer ============ */
.site-footer {
  margin-top: var(--section-y-lg);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}
.stamp-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px var(--space-2);
  padding: 10px var(--gutter);
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
}
.stamp-bar--primary { background-color: var(--color-primary); color: var(--color-primary-ink); }
.stamp-bar--contrast {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-accent);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}
.stamp-bar__dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-pill);
  background-color: currentColor;
}
.stamp-bar__text {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
}
.stamp-bar__aux {
  margin-left: auto;
  font-size: var(--text-xs);
  opacity: 0.78;
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  padding-block: var(--space-6);
}
.footer-brand {
  margin-bottom: var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  color: var(--color-contrast-ink);
}
.footer-note {
  max-width: 36ch;
  font-size: var(--text-xs);
  line-height: 1.8;
  color: color-mix(in srgb, var(--color-contrast-ink) 68%, transparent);
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px var(--space-2);
  font-size: var(--text-sm);
  align-content: flex-start;
}
.footer-links a {
  padding-bottom: 2px;
  color: var(--color-contrast-ink);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
  transition: color 0.18s ease, border-color 0.18s ease;
}
.footer-links a:hover { color: var(--color-contrast-accent); border-bottom-color: var(--color-contrast-accent); }
.footer-meta {
  font-size: var(--text-xs);
  color: color-mix(in srgb, var(--color-contrast-ink) 74%, transparent);
}
.footer-meta__line { margin-bottom: 6px; }
.footer-contact { margin-bottom: 2px; line-height: 1.7; }
.footer-contact__key {
  display: inline-block;
  margin-right: var(--space-1);
  letter-spacing: 0.1em;
  color: color-mix(in srgb, var(--color-contrast-ink) 58%, transparent);
}
.copy-btn {
  margin-bottom: var(--space-1);
  padding: 3px 9px;
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  color: color-mix(in srgb, var(--color-contrast-ink) 78%, transparent);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}
.copy-btn:hover { color: var(--color-contrast-ink); border-color: var(--color-contrast-accent); }
.copy-btn.is-done {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

/* ============ 12. motion ============ */
.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  transition-delay: var(--reveal-delay, 0ms);
}
.js-reveal [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ============ 13. responsive ============ */
@media (max-width: 1023px) {
  .span-3, .span-4, .span-5 { grid-column: span 6; }
  .span-7, .span-8, .span-9 { grid-column: span 12; }
}
@media (max-width: 899px) {
  .score-band__inner { padding-right: 104px; }
  .league-tabs { display: none; }
  .band-hint { display: none; }

  .nav-toggle {
    position: fixed;
    top: 7px;
    right: 10px;
    z-index: 100;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 10px;
    border: var(--border-thin) solid var(--color-contrast-line);
    border-radius: var(--radius-sm);
    background-color: var(--color-contrast-surface);
    color: var(--color-contrast-ink);
    font-size: var(--text-xs);
    letter-spacing: 0.08em;
  }
  .nav-toggle__bars { display: flex; flex-direction: column; gap: 3px; width: 16px; }
  .nav-toggle__bars span {
    display: block;
    height: 1.5px;
    background-color: currentColor;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(4.5px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-4.5px) rotate(-45deg); }

  .rail {
    top: 0;
    width: min(300px, 84vw);
    padding: var(--space-6) var(--space-3) var(--space-3);
    align-items: stretch;
    gap: var(--space-4);
    background-color: var(--color-surface);
    box-shadow: var(--shadow-2);
    transform: translateX(-102%);
    transition: transform 0.26s ease;
    z-index: 90;
  }
  .site-header[data-open] .rail { transform: translateX(0); }
  .site-header[data-open]::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 85;
    background-color: color-mix(in srgb, var(--color-contrast-surface) 60%, transparent);
  }
  .rail__brand { flex-direction: row; align-items: center; gap: var(--space-1); text-align: left; }
  .rail__brand-text { width: auto; font-size: var(--text-sm); }
  .rail__list { align-items: stretch; gap: 2px; }
  .rail__link {
    flex-direction: row;
    align-items: center;
    gap: var(--space-1);
    width: 100%;
    padding: 12px var(--space-1);
  }
  .rail__glyph { width: 26px; text-align: center; font-size: var(--text-base); }
  .rail__name {
    position: static;
    padding: 0;
    background: none;
    color: inherit;
    font-size: var(--text-base);
    opacity: 1;
    transform: none;
    pointer-events: auto;
    box-shadow: none;
  }
  .rail__idx { margin-left: auto; }
  .rail__stamp { writing-mode: horizontal-tb; margin-top: var(--space-3); align-self: flex-start; }
}
@media (max-width: 639px) {
  .wrap { padding-inline: 20px; }
  .rule { margin-inline: 20px; }
  [class*="span-"] { grid-column: span 12; }
  .section { padding-block: var(--space-6); }
  .section--lg { padding-block: var(--space-6); }
  .panel { padding: var(--space-2); }
}
@media (min-width: 900px) {
  body { padding-left: 88px; }
  .footer-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr) minmax(0, 0.9fr); }
}

/* ============ 14. reduced motion ============ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .js-reveal [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .pulse-dot { animation: none; opacity: 1; }
}