/* Shared design system and site shell */
:root {
  color-scheme: light;

  /* Palette */
  --bg-primary: #f5f1ea;
  --bg-secondary: #fbf8f4;
  --bg-tertiary: #ffffff;
  --bg-elevated: rgba(255, 255, 255, 0.72);
  --bg-overlay: rgba(242, 237, 229, 0.76);
  --surface-primary: rgba(255, 255, 255, 0.78);
  --surface-secondary: rgba(255, 255, 255, 0.56);
  --surface-glass: rgba(255, 255, 255, 0.48);
  --surface-border: rgba(32, 30, 37, 0.1);
  --surface-border-strong: rgba(32, 30, 37, 0.16);
  --text-primary: #19171d;
  --text-secondary: rgba(25, 23, 29, 0.74);
  --text-muted: rgba(25, 23, 29, 0.54);
  --text-inverse: #f7f5f1;
  --accent: #1d1d26;
  --accent-soft: #8fa9b8;
  --accent-warm: #d6baa2;
  --accent-lilac: #b4a6cf;
  --accent-gradient: linear-gradient(135deg, #dff0e7 0%, #d8e2fb 48%, #eed8ca 100%);
  --accent-gradient-strong: linear-gradient(135deg, rgba(143, 169, 184, 0.96) 0%, rgba(180, 166, 207, 0.92) 45%, rgba(214, 186, 162, 0.9) 100%);
  --grid-line: rgba(29, 29, 38, 0.06);

  /* Legacy aliases */
  --bg: var(--bg-primary);
  --card: var(--bg-tertiary);
  --fg: var(--text-primary);
  --muted: var(--text-muted);
  --border: var(--surface-border);

  /* Typography */
  --font-sans: "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display: "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --text-xs: 0.72rem;
  --text-sm: 0.88rem;
  --text-md: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.4rem;
  --text-2xl: clamp(1.8rem, 3vw, 2.6rem);
  --text-3xl: clamp(2.7rem, 7vw, 5.8rem);
  --text-hero: clamp(3.6rem, 10vw, 8.8rem);
  --leading-tight: 0.92;
  --leading-copy: 1.68;

  /* Spacing */
  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-5: 1.5rem;
  --s-6: 2rem;
  --s-7: 3rem;
  --s-8: 4rem;
  --s-9: 6rem;
  --s-10: 8rem;
  --s-11: 10rem;

  /* Radius */
  --radius-sm: 0.8rem;
  --radius-md: 1.1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --radius-2xl: 2.75rem;
  --radius-pill: 999px;

  /* Shadows */
  --shadow-soft: 0 12px 40px rgba(23, 18, 35, 0.08);
  --shadow-medium: 0 18px 54px rgba(23, 18, 35, 0.12);
  --shadow-glow: 0 0 0 1px rgba(255,255,255,0.24), 0 28px 80px rgba(111, 126, 169, 0.18);

  /* Motion */
  --ease-standard: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-smooth: cubic-bezier(0.2, 0.8, 0.2, 1);
  --duration-fast: 160ms;
  --duration-base: 260ms;
  --duration-slow: 460ms;

  /* Layout */
  --container-width: 92rem;
  --content-width: 74rem;
  --content-narrow: 58rem;
  --page-gutter: 1rem;
  --section-spacing: clamp(3.5rem, 7vw, 7rem);
  --stack-gap: 1.5rem;
  --grid-gap: 1.5rem;
  --header-height: 5rem;
  --footer-spacing: 5rem;

  /* Breakpoint tokens (documentation / JS use) */
  --bp-sm: 40rem;
  --bp-md: 64rem;
  --bp-lg: 80rem;
  --bp-xl: 96rem;
}

html.dark {
  color-scheme: dark;
  --bg-primary: #12141a;
  --bg-secondary: #171b22;
  --bg-tertiary: #1c212b;
  --bg-elevated: rgba(27, 32, 41, 0.76);
  --bg-overlay: rgba(17, 20, 27, 0.76);
  --surface-primary: rgba(28, 33, 43, 0.82);
  --surface-secondary: rgba(23, 27, 34, 0.7);
  --surface-glass: rgba(28, 33, 43, 0.56);
  --surface-border: rgba(230, 235, 247, 0.08);
  --surface-border-strong: rgba(230, 235, 247, 0.14);
  --text-primary: #eff2f8;
  --text-secondary: rgba(239, 242, 248, 0.78);
  --text-muted: rgba(239, 242, 248, 0.56);
  --text-inverse: #14161b;
  --accent: #f4f6fb;
  --accent-soft: #8ea6c8;
  --accent-warm: #bc8f73;
  --accent-lilac: #9a90cb;
  --accent-gradient: linear-gradient(135deg, rgba(85, 116, 105, 0.42) 0%, rgba(86, 104, 151, 0.34) 48%, rgba(130, 93, 70, 0.34) 100%);
  --accent-gradient-strong: linear-gradient(135deg, rgba(142, 166, 200, 0.6) 0%, rgba(154, 144, 203, 0.55) 45%, rgba(188, 143, 115, 0.48) 100%);
  --grid-line: rgba(238, 243, 255, 0.06);
  --shadow-soft: 0 16px 46px rgba(4, 7, 13, 0.28);
  --shadow-medium: 0 22px 70px rgba(4, 7, 13, 0.4);
  --shadow-glow: 0 0 0 1px rgba(255,255,255,0.04), 0 28px 80px rgba(90, 107, 163, 0.22);
}

html,
body {
  overflow-x: clip;
  background: var(--bg-primary);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text-primary);
  background:
    radial-gradient(circle at 12% 18%, rgba(143, 169, 184, 0.14), transparent 28%),
    radial-gradient(circle at 84% 10%, rgba(214, 186, 162, 0.14), transparent 24%),
    radial-gradient(circle at 50% 76%, rgba(180, 166, 207, 0.12), transparent 30%),
    linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 22%, var(--bg-primary) 100%);
  font-size: var(--text-md);
  line-height: var(--leading-copy);
  transition: background var(--duration-slow) var(--ease-standard), color var(--duration-base) var(--ease-standard);
}

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

::selection {
  background: rgba(143, 169, 184, 0.32);
  color: var(--text-primary);
}

::-webkit-scrollbar {
  width: 0.6rem;
  height: 0.6rem;
}

::-webkit-scrollbar-thumb {
  background: rgba(128, 128, 128, 0.38);
  border-radius: var(--radius-pill);
}

::-webkit-scrollbar-track {
  background: rgba(128, 128, 128, 0.08);
}

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

a {
  color: inherit;
}

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

body.site-layout {
  position: relative;
}

body.site-layout::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 3.5rem 3.5rem;
  opacity: 0.22;
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,0.4), transparent 80%);
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.4), transparent 80%);
}

body.site-layout main.site-shell-main {
  width: min(100%, var(--container-width));
  margin: 0 auto;
  padding: calc(var(--section-spacing) + 0.5rem) var(--page-gutter) var(--footer-spacing);
}

body.site-layout main.site-shell-main > * + * {
  margin-top: var(--stack-gap);
}

@media (min-width: 48rem) {
  :root {
    --page-gutter: 1.5rem;
  }
}

@media (min-width: 80rem) {
  :root {
    --page-gutter: 2rem;
  }
}

/* Utilities */
.site-grid,
.layout-grid {
  display: grid;
  gap: var(--grid-gap);
}

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

.site-grid--sidebar,
.layout-grid--sidebar {
  grid-template-columns: minmax(0, 1.3fr) minmax(18rem, 28rem);
  align-items: start;
}

.site-grid--12,
.layout-grid--12 {
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.site-stack > * + *,
.layout-stack > * + * {
  margin-top: var(--stack-gap);
}

.site-section,
.layout-section {
  margin-top: var(--section-spacing);
}

@media (max-width: 64rem) {
  .site-grid--sidebar,
  .layout-grid--sidebar,
  .site-grid--2,
  .layout-grid--2,
  .site-grid--12,
  .layout-grid--12 {
    grid-template-columns: 1fr;
  }
}

.accent-link {
  color: var(--accent);
}

.code-sm {
  font-size: 12px;
}

.meta-mono,
.eyebrow {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.8rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--surface-border);
  background: var(--surface-secondary);
  color: var(--text-secondary);
  font-size: 0.72rem;
  line-height: 1;
}

.glass-panel,
.surface-panel {
  border: 1px solid var(--surface-border);
  background: var(--surface-primary);
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft);
}

.surface-panel--soft {
  background: var(--surface-secondary);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.button,
.button-primary,
.button-secondary,
.button-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  min-height: 3.25rem;
  padding: 0.95rem 1.3rem;
  border-radius: var(--radius-pill);
  text-decoration: none;
  border: 1px solid transparent;
  transition:
    transform var(--duration-fast) var(--ease-smooth),
    opacity var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    background var(--duration-base) var(--ease-standard),
    color var(--duration-base) var(--ease-standard),
    box-shadow var(--duration-base) var(--ease-standard);
}

.button:hover,
.button-primary:hover,
.button-secondary:hover,
.button-ghost:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--accent);
  color: var(--text-inverse);
  border-color: rgba(255, 255, 255, 0.22);
  box-shadow: var(--shadow-medium);
}

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

.button-secondary {
  background: var(--surface-primary);
  color: var(--text-primary);
  border-color: var(--surface-border-strong);
}

.button-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--surface-border);
}

.button-primary::after,
.button-secondary::after,
.button-ghost::after {
  content: "↗";
  font-size: 0.92em;
}

.section-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-3);
  align-items: end;
  padding: var(--s-6) 0 var(--s-4);
  border-bottom: 1px solid var(--surface-border);
}

.section-head--compact {
  padding-top: var(--s-4);
}

.section-head__num {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.section-head__title {
  margin: 0;
  font-size: clamp(1.9rem, 4.6vw, 4rem);
  line-height: var(--leading-tight);
  font-weight: 900;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.section-head__muted {
  color: var(--text-muted);
}

.section-head__count,
.section-head__link {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.section-head__link {
  text-decoration: none;
}

.section-head__link:hover {
  color: var(--text-primary);
  text-decoration: underline;
}

@media (min-width: 56rem) {
  .section-head {
    grid-template-columns: auto 1fr auto;
    gap: var(--s-5);
  }
}

.noir-marquee {
  border-block: 1px solid var(--surface-border);
  overflow: hidden;
  white-space: nowrap;
  background: var(--surface-secondary);
  border-radius: var(--radius-pill);
  margin-block: var(--s-5);
}

.noir-marquee__track {
  display: inline-block;
  padding: 0.92rem 0;
  min-width: 100%;
  animation: noir-marquee-scroll 34s linear infinite;
}

.noir-marquee__track span {
  padding-inline: 0.7rem;
}

.noir-marquee__dot {
  color: var(--text-muted);
}

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

.noir-accordion {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--surface-border);
}

.noir-accordion__item {
  border-bottom: 1px solid var(--surface-border);
  background: var(--surface-primary);
}

.noir-accordion__trigger {
  width: 100%;
  border: 0;
  background: transparent;
  color: inherit;
  padding: 1.15rem 1rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--s-3);
  align-items: center;
  text-align: left;
  cursor: pointer;
}

.noir-accordion__trigger:hover {
  background: rgba(128, 128, 128, 0.06);
}

.noir-accordion__num,
.noir-accordion__arrow {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.noir-accordion__name {
  font-size: clamp(1rem, 1.6vw, 1.22rem);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.noir-accordion__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 280ms var(--ease-standard);
}

.noir-accordion__panel-inner {
  overflow: hidden;
}

.noir-accordion__content {
  padding: 0 1rem 1rem;
  color: var(--text-secondary);
}

.noir-accordion__item[data-open="true"] .noir-accordion__panel {
  grid-template-rows: 1fr;
}

.noir-accordion__item[data-open="true"] .noir-accordion__arrow {
  transform: rotate(45deg);
  color: var(--text-primary);
}

/* Landing components */
.landing-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(7rem, 10vw, 9rem);
}

.landing-hero__frame {
  position: relative;
  border-radius: calc(var(--radius-2xl) + 0.5rem);
  padding: clamp(1.2rem, 3vw, 2rem);
  background: linear-gradient(180deg, rgba(255,255,255,0.22), rgba(255,255,255,0.05));
  border: 1px solid rgba(255,255,255,0.2);
  box-shadow: var(--shadow-glow);
}

html.dark .landing-hero__frame {
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
}

.landing-hero__frame::before,
.landing-hero__frame::after {
  content: "";
  position: absolute;
  inset: auto;
  border-radius: 50%;
  filter: blur(50px);
  pointer-events: none;
}

.landing-hero__frame::before {
  width: 14rem;
  height: 14rem;
  left: -2rem;
  top: -2rem;
  background: rgba(143, 169, 184, 0.22);
}

.landing-hero__frame::after {
  width: 18rem;
  height: 18rem;
  right: -4rem;
  bottom: -4rem;
  background: rgba(214, 186, 162, 0.18);
}

.landing-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(1.4rem, 3vw, 2.5rem);
}

@media (min-width: 72rem) {
  .landing-hero__grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(20rem, 0.82fr);
    align-items: end;
  }
}

.landing-hero__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.landing-hero__meta-card {
  padding: 0.95rem 1rem;
  border-radius: var(--radius-lg);
  background: var(--surface-secondary);
  border: 1px solid var(--surface-border);
  color: var(--text-secondary);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.landing-hero__meta-card strong,
.landing-hero__meta-card span {
  display: block;
}

.landing-hero__meta-card strong {
  color: var(--text-primary);
  margin-top: 0.28rem;
  font-size: var(--text-sm);
}

.landing-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--text-hero);
  line-height: 0.88;
  letter-spacing: -0.06em;
  text-transform: uppercase;
}

.landing-hero__title em {
  font-style: normal;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.landing-hero__lead {
  max-width: 48rem;
  margin: 1.25rem 0 0;
  font-size: clamp(1.02rem, 1.8vw, 1.22rem);
  color: var(--text-secondary);
}

.landing-hero__actions {
  margin-top: 1.5rem;
}

.landing-hero__note {
  margin-top: 1rem;
  color: var(--text-muted);
  font-size: var(--text-sm);
}

.landing-hero__visual {
  display: grid;
  gap: 1rem;
}

.landing-hero__visual-stack {
  display: grid;
  gap: 1rem;
}

.landing-card {
  position: relative;
  overflow: hidden;
  padding: 1.25rem;
  border-radius: var(--radius-xl);
  background: var(--surface-primary);
  border: 1px solid var(--surface-border);
  box-shadow: var(--shadow-soft);
}

.landing-card::before {
  content: "";
  position: absolute;
  inset: auto -18% -52% auto;
  width: 12rem;
  height: 12rem;
  background: var(--accent-gradient);
  opacity: 0.4;
  filter: blur(36px);
}

.landing-card__eyebrow {
  color: var(--text-muted);
  font-size: 0.68rem;
}

.landing-card__title {
  margin: 0.4rem 0 0;
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
}

.landing-card__copy {
  position: relative;
  margin: 0.85rem 0 0;
  color: var(--text-secondary);
}

.signal-list {
  display: grid;
  gap: 0.8rem;
  margin-top: 1rem;
}

.signal-list__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0.95rem;
  border-radius: var(--radius-lg);
  background: var(--surface-secondary);
  border: 1px solid var(--surface-border);
}

.signal-list__item strong {
  font-size: 0.95rem;
  letter-spacing: -0.02em;
}

.signal-list__item span {
  color: var(--text-muted);
  font-size: 0.82rem;
}

.kpi-grid,
.feature-grid,
.insight-grid,
.footer-grid,
.highlight-grid {
  display: grid;
  gap: 1rem;
}

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

@media (min-width: 64rem) {
  .kpi-grid,
  .feature-grid,
  .highlight-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .insight-grid,
  .footer-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 40rem) {
  .kpi-grid,
  .feature-grid,
  .insight-grid,
  .footer-grid,
  .highlight-grid {
    grid-template-columns: 1fr;
  }
}

.kpi-card,
.feature-card,
.insight-card,
.footer-card,
.highlight-card {
  padding: 1.2rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--surface-border);
  background: var(--surface-primary);
  box-shadow: var(--shadow-soft);
  transition: transform var(--duration-fast) var(--ease-smooth), border-color var(--duration-fast) var(--ease-standard), box-shadow var(--duration-fast) var(--ease-standard);
}

.kpi-card:hover,
.feature-card:hover,
.insight-card:hover,
.footer-card:hover,
.highlight-card:hover {
  transform: translateY(-3px);
  border-color: var(--surface-border-strong);
  box-shadow: var(--shadow-medium);
}

.kpi-value {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
}

.kpi-label,
.card-label {
  margin-top: 0.6rem;
  color: var(--text-muted);
  font-size: 0.76rem;
}

.feature-card__title,
.insight-card__title,
.highlight-card__title,
.footer-card__title {
  margin: 0;
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.feature-card__copy,
.insight-card__copy,
.highlight-card__copy,
.footer-card__copy {
  margin: 0.7rem 0 0;
  color: var(--text-secondary);
}

.split-showcase {
  display: grid;
  gap: 1rem;
}

@media (min-width: 70rem) {
  .split-showcase {
    grid-template-columns: minmax(0, 1.1fr) minmax(20rem, 0.9fr);
  }
}

.split-showcase__content,
.split-showcase__panel {
  padding: clamp(1.2rem, 3vw, 1.8rem);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--surface-border);
  background: var(--surface-primary);
  box-shadow: var(--shadow-soft);
}

.split-showcase__panel {
  background: linear-gradient(180deg, var(--surface-primary), var(--surface-secondary));
}

.step-list {
  display: grid;
  gap: 0.85rem;
}

.step-list__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--surface-border);
}

.step-list__item:last-child {
  border-bottom: 0;
}

.step-list__num {
  min-width: 2rem;
  color: var(--text-muted);
}

.step-list__title {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.step-list__copy {
  margin: 0.45rem 0 0;
  color: var(--text-secondary);
}

.cta-band {
  position: relative;
  overflow: hidden;
  padding: clamp(1.5rem, 4vw, 2.4rem);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--surface-border);
  background: var(--accent-gradient);
  box-shadow: var(--shadow-medium);
}

.cta-band::after {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  background: rgba(255,255,255,0.24);
  opacity: 0.45;
  pointer-events: none;
}

html.dark .cta-band::after {
  background: rgba(11, 14, 20, 0.16);
}

.cta-band__content {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1rem;
}

@media (min-width: 64rem) {
  .cta-band__content {
    grid-template-columns: 1fr auto;
    align-items: end;
  }
}

.cta-band__title {
  margin: 0;
  font-size: clamp(2rem, 5vw, 4.2rem);
  line-height: 0.92;
  letter-spacing: -0.05em;
  text-transform: uppercase;
}

.cta-band__copy {
  margin: 0.7rem 0 0;
  max-width: 44rem;
  color: rgba(25, 23, 29, 0.78);
}

html.dark .cta-band__copy {
  color: rgba(239, 242, 248, 0.8);
}

.footer-columns {
  display: grid;
  gap: 1rem;
}

@media (min-width: 64rem) {
  .footer-columns {
    grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  }
}

.footer-links-list,
.footer-meta-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.footer-links-list a:hover {
  color: var(--text-primary);
}

/* Shared header shell */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  padding: 0.8rem var(--page-gutter) 0;
  background: linear-gradient(180deg, rgba(245, 241, 234, 0.72), rgba(245, 241, 234, 0));
}

html.dark .site-header {
  background: linear-gradient(180deg, rgba(18, 20, 26, 0.78), rgba(18, 20, 26, 0));
}

.site-header .hi {
  width: min(100%, var(--container-width));
  margin: 0 auto;
  min-height: var(--header-height);
  padding: 0.85rem 1rem;
  display: grid;
  grid-template-columns: auto auto;
  align-items: center;
  gap: 1rem;
  border-radius: var(--radius-pill);
  background: var(--bg-elevated);
  border: 1px solid var(--surface-border);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-soft);
}

.site-header .logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 800;
}

.site-header .logo svg {
  width: 1.45rem;
  height: 1.45rem;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.logo svg .capricorn-mark {
  fill: currentColor;
  stroke: none;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 0.54rem;
  font-weight: 700;
  letter-spacing: 0;
}

.site-header .logo-text {
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-header .nav-toggle {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  border: 1px solid var(--surface-border);
  background: var(--surface-secondary);
  color: var(--text-primary);
}

.site-header .nav-toggle-line {
  position: relative;
  width: 1rem;
  height: 2px;
  background: currentColor;
}

.site-header .nav-toggle-line::before,
.site-header .nav-toggle-line::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform var(--duration-base) var(--ease-standard), top var(--duration-base) var(--ease-standard), opacity var(--duration-fast) var(--ease-standard);
}

.site-header .nav-toggle-line::before {
  top: -5px;
}

.site-header .nav-toggle-line::after {
  top: 5px;
}

.site-header[data-open="true"] .nav-toggle-line {
  background: transparent;
}

.site-header[data-open="true"] .nav-toggle-line::before {
  top: 0;
  transform: rotate(45deg);
}

.site-header[data-open="true"] .nav-toggle-line::after {
  top: 0;
  transform: rotate(-45deg);
}

.site-header .nav-shell {
  grid-column: 1 / -1;
  display: none;
  gap: 1rem;
  padding-top: 0.75rem;
}

.site-header[data-open="true"] .nav-shell {
  display: grid;
}

.site-header .nav-links,
.site-header .nav-meta {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.site-header .nav-domain-group {
  display: grid;
  gap: 0.45rem;
  padding: 0.62rem;
  border: 1px solid var(--surface-border);
  border-radius: calc(var(--radius-xl) - 0.35rem);
  background: rgba(128, 128, 128, 0.045);
}

.site-header .nav-domain-label {
  color: var(--text-muted);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  line-height: 1;
  text-transform: uppercase;
}

.site-header .nav-domain-items {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.site-header .nav-links a,
.site-header .nav-meta a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  color: var(--text-muted);
  text-decoration: none;
  transition:
    color var(--duration-fast) var(--ease-standard),
    opacity var(--duration-fast) var(--ease-standard),
    background var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

.site-header .nav-links a {
  min-height: 2.25rem;
  padding: 0.48rem 0.66rem;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  line-height: 1;
  letter-spacing: -0.01em;
}

.site-header .nav-domain-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1;
}

.site-header .nav-links a:hover,
.site-header .nav-meta a:hover,
.site-header .nav-links a.active,
.site-header .nav-links a[aria-current="page"] {
  color: var(--text-primary);
}

.site-header .nav-links a:hover,
.site-header .nav-links a.active,
.site-header .nav-links a[aria-current="page"] {
  border-color: var(--surface-border-strong);
  background: rgba(39, 39, 42, 0.075);
  box-shadow: inset 0 -1px 0 rgba(34, 211, 238, 0.28), 0 0 24px rgba(34, 211, 238, 0.06);
}

html.dark .site-header .nav-links a:hover,
html.dark .site-header .nav-links a.active,
html.dark .site-header .nav-links a[aria-current="page"] {
  background: rgba(39, 39, 42, 0.78);
  box-shadow: inset 0 -1px 0 rgba(34, 211, 238, 0.42), 0 0 24px rgba(34, 211, 238, 0.12);
}

.site-header .nav-links a:hover .nav-domain-icon,
.site-header .nav-links a.active .nav-domain-icon,
.site-header .nav-links a[aria-current="page"] .nav-domain-icon {
  color: var(--text-primary);
}

.site-header .nav-health-dot {
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 999px;
  background: #f59e0b;
  box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.52);
  animation: nav-health-pulse 1.9s ease-out infinite;
}

.site-header .nav-health-dot.is-live {
  background: #34d399;
  box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.58);
}

.site-header .nav-health-dot.is-idle {
  background: #f59e0b;
}

.site-header .nav-utility-link {
  font-size: 0.78rem;
}

.site-header .nav-meta-row {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.site-header .auth-row a {
  padding: 0.36rem 0.7rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--surface-border);
  background: var(--surface-secondary);
  font-size: 0.78rem;
  line-height: 1;
}

.site-header .auth-row a:hover {
  border-color: var(--surface-border-strong);
}

.site-header .auth-row .nav-vault-link {
  border-color: rgba(34, 211, 238, 0.22);
  background:
    radial-gradient(circle at 20% 0%, rgba(34, 211, 238, 0.18), transparent 70%),
    var(--surface-secondary);
  color: var(--text-primary);
  font-weight: 800;
}

.site-header .auth-row .nav-vault-link:hover,
.site-header .auth-row .nav-vault-link.active,
.site-header .auth-row .nav-vault-link[aria-current="page"] {
  border-color: rgba(34, 211, 238, 0.42);
  box-shadow: 0 0 24px rgba(34, 211, 238, 0.1);
}

.site-header .site-clock {
  font-size: 0.68rem;
  color: var(--text-muted);
}

.site-header #theme-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  width: 3.55rem;
  height: 2rem;
  background: rgba(128, 128, 128, 0.08);
  border: 1px solid var(--surface-border);
  border-radius: 9999px;
  padding: 3px;
  cursor: pointer;
  transition: border-color var(--duration-base) var(--ease-standard), background var(--duration-base) var(--ease-standard);
}

.site-header .thumb {
  width: 1.45rem;
  height: 1.45rem;
  background: var(--accent);
  border-radius: 9999px;
  transition: transform var(--duration-base) var(--ease-standard);
  display: flex;
  align-items: center;
  justify-content: center;
}

html.dark .site-header .thumb {
  transform: translateX(1.55rem);
}

.site-header .thumb svg {
  width: 0.72rem;
  height: 0.72rem;
  stroke: var(--bg-primary);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@media (min-width: 72rem) {
  .site-header .hi {
    grid-template-columns: auto 1fr;
    gap: 1.25rem;
  }

  .site-header .nav-toggle {
    display: none;
  }

  .site-header .nav-shell,
  .site-header[data-open="true"] .nav-shell {
    grid-column: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 0;
    gap: 1rem;
  }

  .site-header .nav-links,
  .site-header .nav-meta {
    flex-direction: row;
    align-items: center;
  }

  .site-header .nav-links {
    gap: 0.55rem;
    justify-content: center;
  }

  .site-header .nav-domain-group {
    display: flex;
    align-items: center;
    gap: 0.48rem;
    padding: 0.28rem;
    border-radius: var(--radius-pill);
  }

  .site-header .nav-domain-label {
    padding-left: 0.5rem;
  }

  .site-header .nav-domain-items {
    flex-direction: row;
    align-items: center;
    gap: 0.08rem;
  }

  .site-header .nav-meta {
    gap: 0.8rem;
    justify-content: flex-end;
  }
}

@keyframes nav-health-pulse {
  70% { box-shadow: 0 0 0 0.62rem rgba(245, 158, 11, 0); }
  100% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0); }
}

/* Shared footer shell */
.site-footer {
  position: relative;
  margin-top: var(--footer-spacing);
  padding: 0 var(--page-gutter) 2rem;
}

.site-footer .fi {
  width: min(100%, var(--container-width));
  margin: 0 auto;
  padding: clamp(1.4rem, 3vw, 2rem);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--surface-border);
  background: var(--surface-primary);
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
  box-shadow: var(--shadow-soft);
  display: grid;
  gap: 1.2rem;
}

.site-footer .footer-wordmark {
  margin: 0;
  padding-bottom: clamp(1.2rem, 3vw, 2rem);
  border-bottom: 1px solid var(--surface-border);
  color: var(--text-primary);
  font-size: clamp(3.4rem, 12vw, 11rem);
  font-weight: 950;
  line-height: 0.78;
  letter-spacing: -0.075em;
  text-transform: uppercase;
}

.site-footer .footer-wordmark span {
  color: var(--accent-soft);
}

.site-footer .fc {
  font-size: 0.72rem;
  line-height: 1.7;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.site-footer .footer-sdk-rail {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.65rem;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  background: var(--surface-secondary);
}

.site-footer .footer-sdk-rail__label {
  color: var(--text-muted);
  font-size: 0.66rem;
}

.site-footer .footer-sdk-rail a {
  display: inline-flex;
  align-items: center;
  min-height: 1.8rem;
  padding: 0.36rem 0.62rem;
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-pill);
  background: var(--surface-primary);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-decoration: none;
}

.site-footer .footer-sdk-rail a:hover {
  color: var(--text-primary);
  border-color: var(--surface-border-strong);
}

.site-footer .fl {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.site-footer .fl a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
}

.site-footer .fl a:hover {
  color: var(--text-primary);
}

.site-footer .footer-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem;
  padding-top: 0.2rem;
}

.site-footer .footer-col h3 {
  margin: 0 0 0.65rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.site-footer .footer-col ul {
  display: grid;
  gap: 0.42rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer .footer-col a {
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-footer .footer-col a::before {
  content: "↳ ";
  color: var(--text-muted);
}

.site-footer .footer-col a:hover {
  color: var(--text-primary);
}

.site-footer .footer-bottom {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.6rem;
  padding-top: 1rem;
  border-top: 1px solid var(--surface-border);
  color: var(--text-muted);
  font-size: 0.68rem;
}

@media (min-width: 70rem) {
  .site-footer .fi {
    grid-template-columns: 1fr;
  }

  .site-footer .footer-columns {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .site-footer .footer-bottom {
    grid-template-columns: repeat(3, 1fr);
  }

  .site-footer .footer-bottom span:nth-child(2) {
    text-align: center;
  }

  .site-footer .footer-bottom span:last-child {
    text-align: right;
  }
}

@media (prefers-reduced-motion: reduce) {
  .noir-marquee__track {
    animation: none;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
  }
}