:root {
  --color-surface: #fafafa;
  --color-surface-alt: #f1f1f2;
  --color-surface-deep: #e4e5e6;
  --color-ink: #464953;
  --color-ink-soft: #6a6e7b;
  --color-ink-muted: #777b88;
  --color-line: #dadadc;
  --color-primary: #4861b7;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #e1e5f1;
  --color-accent: #e1221e;
  --color-accent-ink: #ffffff;
  --color-highlight: #f6d3d2;
  --color-focus: #e01410;
  --color-contrast-surface: #181b24;
  --color-contrast-ink: #e4e5e7;
  --color-contrast-line: #45474f;
  --color-contrast-accent: #e74e4b;
  --overlay-scrim: linear-gradient(180deg, rgba(24, 27, 36, 0.35) 0%, rgba(24, 27, 36, 0.72) 55%, rgba(24, 27, 36, 0.92) 100%);
  --font-heading: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --text-xs: 12.2px;
  --text-sm: 14.6px;
  --text-base: 16px;
  --text-lg: 19.2px;
  --text-xl: 23.0px;
  --text-2xl: 27.6px;
  --text-3xl: 33.2px;
  --text-4xl: 39.8px;
  --text-display: clamp(34px, 4.4vw, 56px);
  --text-figure: clamp(28px, 3.1vw, 40px);
  --weight-heading: 634;
  --weight-body: 400;
  --leading-body: 1.73;
  --leading-heading: 1.21;
  --tracking-heading: 0.007em;
  --radius-sm: 2px;
  --radius-md: 5px;
  --radius-lg: 8px;
  --radius-pill: 999px;
  --border-thin: 1px;
  --border-thick: 1px;
  --shadow-1: 0 1px 0 rgba(70, 73, 83, 0.12);
  --shadow-2: 0 2px 0 rgba(70, 73, 83, 0.18);
  --space-1: 7px;
  --space-2: 14px;
  --space-3: 21px;
  --space-4: 28px;
  --space-6: 42px;
  --space-8: 56px;
  --container: 1320px;
  --measure: 68ch;
  --gutter: 28px;
  --section-y: 79px;
  --section-y-lg: 111px;
}

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

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

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;
  text-rendering: optimizeLegibility;
}

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

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);
}

p { margin: 0; }

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

a:hover { color: var(--color-focus); }

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

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

:where(h1, h2, h3, h4, [id]) { scroll-margin-top: 108px; }

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

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

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

.muted { color: var(--color-ink-muted); }
.soft { color: var(--color-ink-soft); }

.stack > * + * { margin-top: var(--space-3); }
.stack-sm > * + * { margin-top: var(--space-2); }
.stack-lg > * + * { margin-top: var(--space-6); }

.edge-rule {
  display: block;
  height: var(--border-thin);
  margin: 0;
  border: 0;
  background-color: var(--color-line);
}

.edge-rule--offset { margin-left: calc(100% / 12); }

/* ============ skip link ============ */
.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -72px;
  z-index: 220;
  padding: 10px 18px;
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  transition: top 160ms ease;
}

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

/* ============ header ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-surface);
}

.site-header::after {
  content: "";
  display: block;
  height: 2px;
  background-image: linear-gradient(
    90deg,
    var(--color-primary) 0 66%,
    var(--color-accent) 66% 100%
  );
}

.site-header__ticker {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.site-header__ticker-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1) var(--space-6);
  min-height: 34px;
  padding-block: var(--space-1);
  font-size: var(--text-xs);
}

.ticker-item {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  white-space: nowrap;
  color: var(--color-contrast-ink);
  opacity: 0.78;
}

.ticker-item:first-child {
  opacity: 1;
  color: var(--color-contrast-accent);
}

.site-header__main {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  flex: 0 0 auto;
  color: var(--color-ink);
}

.brand:hover { color: var(--color-ink); }

.brand__mark {
  position: relative;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border: var(--border-thin) solid var(--color-primary);
  border-radius: var(--radius-sm);
  background-color: var(--color-contrast-surface);
  overflow: hidden;
}

.brand__mark::before {
  content: "";
  position: absolute;
  left: 6px;
  bottom: 5px;
  width: 5px;
  height: 10px;
  background-color: var(--color-primary);
}

.brand__mark::after {
  content: "";
  position: absolute;
  left: 16px;
  bottom: 5px;
  width: 5px;
  height: 18px;
  background-color: var(--color-contrast-accent);
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  line-height: 1.16;
}

.brand__name {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.brand__sub {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  flex: 1 1 auto;
}

.site-nav__link {
  display: block;
  padding: 8px 13px;
  border: var(--border-thin) solid transparent;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.site-nav__link:hover {
  color: var(--color-ink);
  background-color: var(--color-surface-alt);
  border-color: var(--color-line);
}

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

.site-nav__link[aria-current="page"]:hover {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 0 0 auto;
}

.header-cta {
  display: inline-block;
  padding: 9px 16px;
  border: var(--border-thin) solid var(--color-accent);
  border-radius: var(--radius-sm);
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.header-cta:hover {
  background-color: var(--color-accent-ink);
  color: var(--color-accent);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  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);
}

.nav-toggle__text { letter-spacing: 0.06em; }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 10px;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background-color: currentColor;
}

.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }

.nav-toggle[aria-expanded="true"] {
  background-color: var(--color-contrast-surface);
  border-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

/* ============ footer ============ */
.site-footer {
  margin-top: var(--section-y-lg);
  border-top: 2px solid var(--color-primary);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: var(--space-6) var(--space-4);
  padding-block: var(--section-y) var(--space-6);
}

.footer-brand__name {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.footer-brand__note {
  margin-top: var(--space-2);
  max-width: 46ch;
  font-size: var(--text-sm);
  line-height: 1.9;
  color: color-mix(in srgb, var(--color-contrast-ink) 72%, transparent);
}

.footer-brand__stamp {
  display: inline-block;
  margin-top: var(--space-3);
  padding: 4px 10px;
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-contrast-ink);
}

.footer-col__title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-body);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.footer-list a {
  display: inline-block;
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-contrast-ink) 80%, transparent);
  border-bottom: var(--border-thin) solid transparent;
  padding-bottom: 1px;
}

.footer-list a:hover {
  color: var(--color-contrast-accent);
  border-bottom-color: var(--color-contrast-accent);
}

.footer-contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-3) var(--space-4);
  padding-block: var(--space-4);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.footer-contact__item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.footer-contact__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-contrast-accent);
}

.footer-contact__value {
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  word-break: break-word;
}

.footer-contact__note {
  max-width: var(--measure);
  font-size: var(--text-xs);
  line-height: 1.95;
  color: color-mix(in srgb, var(--color-contrast-ink) 60%, transparent);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-3) var(--space-6);
  margin-top: var(--space-4);
  padding-block: var(--space-4) var(--space-8);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.footer-legal {
  max-width: 74ch;
  font-size: var(--text-xs);
  line-height: 1.95;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.footer-meta {
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

/* ============ sections ============ */
.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-surface-deep); }

.section--contrast {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.section--contrast h1,
.section--contrast h2,
.section--contrast h3,
.section--contrast h4 { color: var(--color-contrast-ink); }

.section--contrast a { color: var(--color-contrast-accent); }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-ink-muted);
}

.section-label::before {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-accent);
}

.section--contrast .section-label { color: color-mix(in srgb, var(--color-contrast-ink) 70%, transparent); }

/* ============ metrics ============ */
.metric {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
}

.metric__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

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

.metric__note {
  font-size: var(--text-xs);
  line-height: 1.85;
  color: var(--color-ink-muted);
}

.metric--accent {
  border-color: var(--color-accent);
  background-color: var(--color-highlight);
}

.metric--accent .metric__value { color: var(--color-accent); }
.metric--accent .metric__label { color: var(--color-ink); }

.metric--contrast {
  border-color: var(--color-contrast-line);
  background-color: var(--color-contrast-surface);
}

.metric--contrast .metric__value { color: var(--color-contrast-ink); }

.metric--contrast .metric__label,
.metric--contrast .metric__note {
  color: color-mix(in srgb, var(--color-contrast-ink) 68%, transparent);
}

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

.panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
  background-color: var(--color-surface-alt);
}

.panel__title {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.03em;
  color: var(--color-ink);
}

.panel__body { padding: var(--space-3); }

.section--contrast .panel,
.section--contrast .metric {
  border-color: var(--color-contrast-line);
  background-color: color-mix(in srgb, var(--color-contrast-ink) 6%, var(--color-contrast-surface));
}

.section--contrast .panel__head {
  border-bottom-color: var(--color-contrast-line);
  background-color: color-mix(in srgb, var(--color-contrast-ink) 9%, var(--color-contrast-surface));
}

.section--contrast .panel__title,
.section--contrast .panel__body { color: var(--color-contrast-ink); }

/* ============ tags ============ */
.tag {
  display: inline-block;
  padding: 3px 9px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface-alt);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
}

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

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

.tag--ghost {
  background-color: transparent;
  color: var(--color-ink-muted);
}

/* ============ buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: var(--border-thin) solid transparent;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.02em;
}

.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) 80%, var(--color-contrast-surface));
  border-color: color-mix(in srgb, var(--color-primary) 80%, var(--color-contrast-surface));
  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: var(--color-accent-ink);
  color: var(--color-accent);
}

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

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

/* ============ data table ============ */
.dtable {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.dtable th,
.dtable td {
  padding: 10px var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
  text-align: left;
  vertical-align: top;
}

.dtable th {
  background-color: var(--color-surface-alt);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-body);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.dtable td.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.dtable tbody tr:hover { background-color: var(--color-primary-soft); }

.section--contrast .dtable th {
  background-color: color-mix(in srgb, var(--color-contrast-ink) 9%, var(--color-contrast-surface));
  color: color-mix(in srgb, var(--color-contrast-ink) 70%, transparent);
}

.section--contrast .dtable th,
.section--contrast .dtable td { border-bottom-color: var(--color-contrast-line); }

/* ============ accordion ============ */
.accordion { border-top: var(--border-thin) solid var(--color-line); }

.accordion__item { border-bottom: var(--border-thin) solid var(--color-line); }

.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3) 0;
  text-align: left;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

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

.accordion__icon {
  position: relative;
  flex: 0 0 auto;
  width: 12px;
  height: 12px;
}

.accordion__icon::before,
.accordion__icon::after {
  content: "";
  position: absolute;
  background-color: currentColor;
}

.accordion__icon::before { left: 0; right: 0; top: 5px; height: 2px; }
.accordion__icon::after { top: 0; bottom: 0; left: 5px; width: 2px; transition: transform 160ms ease, opacity 160ms ease; }

.accordion__trigger[aria-expanded="true"] .accordion__icon::after {
  transform: scaleY(0);
  opacity: 0;
}

.accordion__trigger[aria-expanded="true"] { color: var(--color-primary); }

.accordion__panel { padding: 0 0 var(--space-3); }
.accordion__panel[hidden] { display: none; }

.section--contrast .accordion,
.section--contrast .accordion__item { border-color: var(--color-contrast-line); }

.section--contrast .accordion__trigger { color: var(--color-contrast-ink); }

/* ============ breadcrumb ============ */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

.breadcrumb a { color: var(--color-ink-soft); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb__sep { color: var(--color-ink-muted); opacity: 0.55; }

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

.prose h2 { margin-top: var(--space-6); font-size: var(--text-2xl); }
.prose h3 { margin-top: var(--space-4); font-size: var(--text-lg); }
.prose p + p { margin-top: var(--space-3); }

.prose ul { margin-top: var(--space-3); }

.prose li {
  position: relative;
  margin-top: 8px;
  padding-left: 18px;
  color: var(--color-ink-soft);
}

.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 2px;
  background-color: var(--color-accent);
}

.prose a {
  color: var(--color-primary);
  border-bottom: var(--border-thin) solid var(--color-primary);
  padding-bottom: 1px;
}

.prose a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.prose--fine {
  font-size: var(--text-sm);
  line-height: 2;
  color: var(--color-ink-soft);
}

.section--contrast .prose,
.section--contrast .prose li,
.section--contrast .prose--fine { color: color-mix(in srgb, var(--color-contrast-ink) 78%, transparent); }

/* ============ grids ============ */
.grid { display: grid; gap: var(--gutter); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--split { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }

/* ============ image frame ============ */
.img-frame {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background-color: var(--color-surface-deep);
  overflow: hidden;
}

.img-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    135deg,
    transparent 0 11px,
    color-mix(in srgb, var(--color-primary) 12%, transparent) 11px 12px
  );
}

.img-frame__media {
  position: relative;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.img-frame__scrim {
  position: absolute;
  inset: 0;
  background-image: var(--overlay-scrim);
  pointer-events: none;
}

.img-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-contrast-ink);
}

/* ============ dynamic bits ============ */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 200;
  background-color: transparent;
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background-color: var(--color-accent);
  transition: width 120ms linear;
}

[data-reveal] { transition: opacity 240ms ease, transform 240ms ease; }

html[data-motion="on"] [data-reveal]:not(.is-revealed) {
  opacity: 0;
  transform: translateY(10px);
}

/* ============ responsive ============ */
@media (max-width: 1199px) {
  .site-nav__link { padding: 8px 10px; }
}

@media (max-width: 1023px) {
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 2px;
    padding: var(--space-2);
    background-color: var(--color-contrast-surface);
    border: var(--border-thin) solid var(--color-contrast-line);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    z-index: 120;
  }

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

  .site-nav__link {
    padding: 12px 14px;
    font-size: var(--text-base);
    color: var(--color-contrast-ink);
    border-color: transparent;
    border-radius: var(--radius-sm);
  }

  .site-nav__link:hover {
    background-color: color-mix(in srgb, var(--color-contrast-ink) 12%, transparent);
    border-color: var(--color-contrast-line);
    color: var(--color-contrast-ink);
  }

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

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

  .grid--3,
  .grid--4,
  .grid--split { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 767px) {
  .ticker-item:nth-child(n + 2) { display: none; }

  .site-header__main { min-height: 66px; }

  .brand__sub { display: none; }

  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-4);
    padding-block: var(--space-8) var(--space-4);
  }

  .footer-bottom { padding-bottom: var(--space-6); }

  .grid--2,
  .grid--3,
  .grid--4,
  .grid--split { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 559px) {
  .header-cta {
    padding: 8px 12px;
    font-size: var(--text-xs);
  }

  .nav-toggle__text { display: none; }
}

/* ============ 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;
    scroll-behavior: auto !important;
  }

  [data-reveal],
  html[data-motion="on"] [data-reveal]:not(.is-revealed) {
    opacity: 1;
    transform: none;
  }

  .scroll-progress { display: none; }
}