:root {
  --color-surface: #fafafa;
  --color-surface-alt: #f1f1f1;
  --color-surface-deep: #e4e5e5;
  --color-ink: #454a4f;
  --color-ink-soft: #676e74;
  --color-ink-muted: #798086;
  --color-line: #d9dadb;
  --color-primary: #3e79ac;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #e0e8ef;
  --color-accent: #de214d;
  --color-accent-ink: #ffffff;
  --color-highlight: #f5d3db;
  --color-focus: #dc1342;
  --color-contrast-surface: #14191e;
  --color-contrast-ink: #e4e6e7;
  --color-contrast-line: #42464a;
  --color-contrast-accent: #e4496d;
  --overlay-scrim: linear-gradient(180deg, rgba(20, 25, 30, 0.35) 0%, rgba(20, 25, 30, 0.72) 55%, rgba(20, 25, 30, 0.92) 100%);
  --font-heading: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-body: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --text-xs: 9.7px;
  --text-sm: 13.0px;
  --text-base: 15px;
  --text-lg: 20.0px;
  --text-xl: 26.7px;
  --text-2xl: 35.5px;
  --text-3xl: 47.4px;
  --text-4xl: 63.1px;
  --text-display: clamp(34px, 5.0vw, 64px);
  --text-figure: clamp(28px, 3.6vw, 46px);
  --weight-heading: 693;
  --weight-body: 400;
  --leading-body: 1.68;
  --leading-heading: 1.22;
  --tracking-heading: 0.007em;
  --radius-sm: 8px;
  --radius-md: 8px;
  --radius-lg: 8px;
  --radius-pill: 999px;
  --border-thin: 1px;
  --border-thick: 1px;
  --shadow-1: 0 6px 18px rgba(69, 74, 79, 0.08);
  --shadow-2: 0 18px 44px rgba(69, 74, 79, 0.14);
  --space-1: 7px;
  --space-2: 14px;
  --space-3: 21px;
  --space-4: 28px;
  --space-6: 42px;
  --space-8: 56px;
  --container: 1320px;
  --measure: 74ch;
  --gutter: 14px;
  --section-y: 56px;
  --section-y-lg: 78px;
}

/* ===== reset ===== */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  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);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

h1 { font-size: var(--text-2xl); }
h2 { font-size: var(--text-xl); }
h3 { font-size: var(--text-lg); }

p { margin: 0 0 var(--space-2); }

ul, ol { margin: 0; padding: 0; }

a { color: var(--color-primary); }

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

img { height: auto; }

button { font: inherit; color: inherit; }

table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

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

#main-content { scroll-margin-top: 118px; }

/* ===== utilities ===== */
.shell {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

.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-6 { grid-column: span 6; }
.span-8 { grid-column: span 8; }
.span-12 { grid-column: span 12; }

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.stack-lg { gap: var(--space-4); }

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
}

.section { padding-block: var(--section-y); }
.section-lg { padding-block: var(--section-y-lg); }
.section-alt { background-color: var(--color-surface-alt); }

.section-deep {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-block: var(--border-thin) solid var(--color-contrast-line);
}

.section-deep h1,
.section-deep h2,
.section-deep h3,
.section-deep p { color: var(--color-contrast-ink); }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.muted {
  color: var(--color-ink-muted);
  font-size: var(--text-sm);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ===== buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 9px var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

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

.btn:active { transform: translateY(1px); }

.btn-primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.btn-primary:hover {
  background-color: color-mix(in srgb, var(--color-primary) 84%, #000);
  border-color: color-mix(in srgb, var(--color-primary) 84%, #000);
  color: var(--color-primary-ink);
}

.btn-accent {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.btn-accent:hover {
  background-color: color-mix(in srgb, var(--color-accent) 86%, #000);
  border-color: color-mix(in srgb, var(--color-accent) 86%, #000);
  color: var(--color-accent-ink);
}

.btn-ghost {
  background-color: transparent;
  border-color: var(--color-line);
  color: var(--color-ink-soft);
}

.footer-panel .btn-ghost {
  border-color: var(--color-contrast-line);
  color: var(--color-contrast-ink);
}

.footer-panel .btn-ghost:hover {
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-accent);
}

/* ===== tags ===== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px var(--space-2);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-pill);
  background-color: var(--color-surface-deep);
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
  font-weight: 700;
  line-height: 1.5;
  text-decoration: none;
}

.tag-primary {
  background-color: var(--color-primary-soft);
  border-color: color-mix(in srgb, var(--color-primary) 32%, transparent);
  color: var(--color-primary);
}

.tag-accent {
  background-color: var(--color-highlight);
  border-color: color-mix(in srgb, var(--color-accent) 32%, transparent);
  color: var(--color-accent);
}

/* ===== panels & metrics ===== */
.panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  background-color: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-1);
}

.panel-lg {
  padding: var(--space-6);
  border-top: 3px solid var(--color-accent);
}

.panel-sm {
  padding: var(--space-3);
  gap: var(--space-1);
  box-shadow: none;
  background-color: var(--color-surface-alt);
}

.panel-dark {
  background-color: var(--color-contrast-surface);
  border-color: var(--color-contrast-line);
  color: var(--color-contrast-ink);
}

.panel-accent {
  background-color: var(--color-primary-soft);
  border-color: color-mix(in srgb, var(--color-primary) 28%, transparent);
}

.panel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.panel-title {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
}

.panel-label {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-ink-muted);
  letter-spacing: 0.04em;
}

.panel-dark .panel-label,
.panel-dark .panel-title {
  color: var(--color-contrast-ink);
}

.metric {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.metric-value {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: 700;
  line-height: 1.03;
  letter-spacing: -0.015em;
  font-variant-numeric: tabular-nums;
  color: var(--color-accent);
}

.metric-value.is-primary { color: var(--color-primary); }

.panel-dark .metric-value { color: var(--color-contrast-accent); }

.metric-label {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-ink-soft);
}

.panel-dark .metric-label {
  color: color-mix(in srgb, var(--color-contrast-ink) 74%, transparent);
}

.metric-note {
  font-size: var(--text-xs);
  letter-spacing: 0.03em;
  color: var(--color-ink-muted);
}

.panel-dark .metric-note {
  color: color-mix(in srgb, var(--color-contrast-ink) 58%, transparent);
}

/* ===== breadcrumbs ===== */
.crumbs {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  list-style: none;
}

.crumbs li:not(:first-child)::before {
  content: "/";
  margin-right: var(--space-1);
  color: var(--color-line);
}

.crumbs a {
  color: var(--color-primary);
  text-decoration: none;
}

.crumbs a:hover { text-decoration: underline; }

/* ===== prose ===== */
.prose {
  max-width: var(--measure);
}

.prose h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}

.prose h3 {
  font-size: var(--text-lg);
  margin-top: var(--space-4);
  margin-bottom: var(--space-1);
}

.prose p {
  margin-bottom: var(--space-3);
  color: var(--color-ink);
}

.prose ul,
.prose ol {
  margin-bottom: var(--space-3);
  padding-left: 1.25em;
}

.prose li { margin-bottom: var(--space-1); }

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

/* ===== media frames ===== */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 10;
  background-color: var(--color-surface-deep);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
}

.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame > img,
.media-frame > .media-fill {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame--tint::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background-color: color-mix(in srgb, var(--color-primary) 46%, transparent);
  mix-blend-mode: multiply;
  pointer-events: none;
}

.media-frame--veil::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background: var(--overlay-scrim);
  pointer-events: none;
}

.media-caption {
  position: absolute;
  z-index: 3;
  left: var(--space-3);
  right: var(--space-3);
  bottom: var(--space-3);
  margin: 0;
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  text-shadow: 0 1px 6px color-mix(in srgb, var(--color-contrast-surface) 80%, transparent);
}

/* ===== rail (无日期步骤轨道) ===== */
.rail {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.rail-item {
  position: relative;
  padding-left: var(--space-6);
}

.rail-item::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 34px;
  bottom: calc(var(--space-3) * -1);
  width: 2px;
  background-color: var(--color-line);
}

.rail-item:last-child::before { display: none; }

.rail-index {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 32%, transparent);
  border-radius: var(--radius-sm);
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
}

.rail-item[data-state="current"] .rail-index {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}

/* ===== expand groups ===== */
.expand-group {
  overflow: hidden;
  background-color: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
}

.expand-group + .expand-group { margin-top: var(--space-1); }

.expand-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3);
  border: 0;
  background-color: transparent;
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  transition: background-color 0.18s ease;
}

.expand-trigger:hover { background-color: var(--color-surface-alt); }

.expand-marker {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface-deep);
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  transition: transform 0.24s ease, background-color 0.24s ease, color 0.24s ease, border-color 0.24s ease;
}

.expand-trigger[aria-expanded="true"] .expand-marker {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
  transform: rotate(45deg);
}

.expand-panel {
  padding: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  color: var(--color-ink-soft);
}

.expand-panel[hidden] { display: none; }

.expand-panel:not([hidden]) {
  animation: panel-flip 0.3s ease;
}

@keyframes panel-flip {
  from {
    opacity: 0;
    transform: perspective(700px) rotateX(-9deg) translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ===== reveal ===== */
[data-js="on"] [data-reveal] {
  opacity: 0;
  transform: translate3d(0, 16px, 0);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

[data-js="on"] [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ===== header ===== */
.skip-link {
  position: absolute;
  left: var(--space-3);
  top: -200%;
  z-index: 200;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  font-weight: 700;
  text-decoration: none;
}

.skip-link:focus {
  top: var(--space-2);
  color: var(--color-contrast-ink);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-surface);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.header-rail {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.header-rail-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding-block: var(--space-2);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
  text-decoration: none;
  color: inherit;
}

.brand-mark {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: var(--border-thin) solid color-mix(in srgb, var(--color-contrast-accent) 44%, transparent);
  border-radius: var(--radius-sm);
  background-color: color-mix(in srgb, var(--color-contrast-accent) 16%, transparent);
  color: var(--color-contrast-accent);
}

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

.brand-name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.brand-tag {
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-contrast-ink) 70%, transparent);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.season-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  margin: 0;
  padding: 5px var(--space-2);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-pill);
  background-color: color-mix(in srgb, var(--color-contrast-ink) 8%, transparent);
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  font-weight: 700;
  white-space: nowrap;
}

.status-dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-pill);
  background-color: var(--color-contrast-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-contrast-accent) 26%, transparent);
  animation: dot-pulse 2.4s ease-in-out infinite;
}

@keyframes dot-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.header-bar-inner {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding-block: var(--space-2);
}

.primary-nav {
  flex: 1 1 auto;
  min-width: 0;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  list-style: none;
}

.nav-link {
  display: inline-block;
  padding: 8px var(--space-2);
  border: var(--border-thin) solid transparent;
  border-radius: var(--radius-sm);
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
  font-weight: 700;
  text-decoration: none;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.nav-link:hover {
  background-color: var(--color-surface-deep);
  color: var(--color-ink);
}

.nav-link[aria-current="page"] {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.header-actions {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-toggle {
  position: relative;
  z-index: 130;
  display: none;
  align-items: center;
  gap: var(--space-1);
  padding: 9px var(--space-2);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface-deep);
  color: var(--color-ink);
  font-size: var(--text-sm);
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.nav-toggle-bars {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  width: 16px;
}

.nav-toggle-bars span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background-color: currentColor;
}

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background-color: var(--color-surface-deep);
  pointer-events: none;
}

.scroll-progress > span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
  transition: width 0.12s linear;
}

/* ===== footer ===== */
.site-footer {
  margin-top: var(--section-y-lg);
  padding-block: var(--section-y);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: 3px solid var(--color-accent);
}

.footer-shell { display: block; }

.footer-cards {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.35fr;
  gap: var(--gutter);
}

.footer-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-md);
  background-color: color-mix(in srgb, var(--color-contrast-ink) 5%, transparent);
}

.footer-panel-brand {
  border-left: 3px solid var(--color-contrast-accent);
}

.footer-kicker {
  margin: 0;
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-contrast-accent);
}

.footer-line {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
}

.footer-line-muted {
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-links a {
  display: inline-block;
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  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-contact {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-contact li {
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  overflow-wrap: anywhere;
}

.footer-copy { align-self: flex-start; }

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2) var(--space-4);
  margin-top: var(--space-6);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-contrast-ink) 66%, transparent);
}

.footer-meta p { margin: 0; }

.footer-meta a {
  color: color-mix(in srgb, var(--color-contrast-ink) 84%, transparent);
  text-decoration: none;
}

.footer-meta a:hover { color: var(--color-contrast-accent); }

/* ===== responsive ===== */
@media (max-width: 1120px) {
  .footer-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  :root { --section-y: 42px; --section-y-lg: 56px; }

  #main-content { scroll-margin-top: 96px; }

  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .span-3 { grid-column: span 3; }
  .span-4,
  .span-6,
  .span-8,
  .span-12 { grid-column: span 6; }

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

  .primary-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 120;
    width: min(330px, 88vw);
    padding: var(--space-8) var(--space-3) var(--space-4);
    overflow-y: auto;
    background-color: var(--color-contrast-surface);
    color: var(--color-contrast-ink);
    border-left: var(--border-thin) solid var(--color-contrast-line);
    box-shadow: var(--shadow-2);
    transform: translateX(102%);
    visibility: hidden;
    transition: transform 0.3s ease, visibility 0.3s ease;
  }

  .primary-nav[data-open] {
    transform: translateX(0);
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    gap: 2px;
  }

  .nav-link {
    display: block;
    width: 100%;
    padding: var(--space-2);
    border: 0;
    border-bottom: var(--border-thin) solid var(--color-contrast-line);
    border-radius: 0;
    color: var(--color-contrast-ink);
    font-size: var(--text-base);
  }

  .nav-link:hover {
    background-color: color-mix(in srgb, var(--color-contrast-ink) 10%, transparent);
    color: var(--color-contrast-ink);
  }

  .nav-link[aria-current="page"] {
    background-color: var(--color-contrast-accent);
    color: var(--color-accent-ink);
    border-bottom-color: transparent;
  }

  .nav-toggle[aria-expanded="true"] {
    background-color: color-mix(in srgb, var(--color-contrast-ink) 14%, transparent);
    border-color: var(--color-contrast-line);
    color: var(--color-contrast-ink);
  }

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

@media (max-width: 640px) {
  .shell { padding-inline: var(--space-2); }

  .brand-tag { display: none; }

  .header-rail-inner { padding-block: var(--space-1); }

  .panel { padding: var(--space-3); }
  .panel-lg { padding: var(--space-4); }

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

  .footer-meta { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 560px) {
  .span-3 { grid-column: span 6; }
  .header-cta { display: none; }
  .season-chip { font-size: var(--text-xs); }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  [data-js="on"] [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
}