:root,
[data-theme='light'] {
  --font-display: 'Zodiak', Georgia, serif;
  --font-body: 'Satoshi', Inter, sans-serif;

  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2.25rem, 1.3rem + 4vw, 5.25rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  --color-bg: #f4f1ea;
  --color-surface: #fbfaf6;
  --color-surface-2: #ebe6dc;
  --color-text: #18221f;
  --color-muted: #66706b;
  --color-faint: #a59f95;
  --color-border: color-mix(in oklab, #18221f 16%, transparent);
  --color-primary: #0d6b67;
  --color-primary-hover: #084e4a;
  --color-primary-soft: #d8e8e4;
  --color-warm: #a96d45;
  --color-inverse: #fbfaf6;
  --shadow-soft: 0 24px 80px color-mix(in oklab, #2d2115 16%, transparent);
  --shadow-card: 0 12px 36px color-mix(in oklab, #2d2115 10%, transparent);
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.5rem;
  --radius-full: 999px;
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme='dark'] {
  --color-bg: #0f1514;
  --color-surface: #17211f;
  --color-surface-2: #202d2a;
  --color-text: #eef0ea;
  --color-muted: #a4aaa4;
  --color-faint: #69716c;
  --color-border: color-mix(in oklab, #eef0ea 14%, transparent);
  --color-primary: #75c2bb;
  --color-primary-hover: #9fd8d2;
  --color-primary-soft: #1d3836;
  --color-warm: #d8a17a;
  --color-inverse: #10201e;
  --shadow-soft: 0 24px 80px color-mix(in oklab, #000 36%, transparent);
  --shadow-card: 0 12px 36px color-mix(in oklab, #000 28%, transparent);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -moz-text-size-adjust: none;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-16);
}

body {
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background:
    radial-gradient(circle at 20% 0%, color-mix(in oklab, var(--color-primary) 14%, transparent), transparent 32rem),
    linear-gradient(180deg, var(--color-bg), color-mix(in oklab, var(--color-bg) 88%, var(--color-surface-2)));
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: '';
  background-image:
    linear-gradient(color-mix(in oklab, var(--color-text) 4%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in oklab, var(--color-text) 4%, transparent) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, black, transparent 76%);
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

button,
a {
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    transform var(--transition-interactive);
}

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

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

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: var(--space-4);
  z-index: 100;
  transform: translateY(-140%);
  border-radius: var(--radius-full);
  background: var(--color-text);
  color: var(--color-inverse);
  padding: var(--space-3) var(--space-5);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in oklab, var(--color-bg) 82%, transparent);
  border-bottom: 1px solid color-mix(in oklab, var(--color-border) 70%, transparent);
  backdrop-filter: blur(18px);
}

.header-inner,
.footer-inner,
.hero,
.note-section,
.bridge-section,
.archive-section,
.faq-section {
  width: min(100% - var(--space-8), 1160px);
  margin-inline: auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  width: 38px;
  height: 38px;
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  gap: var(--space-6);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.nav-links a {
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--color-text);
}

.theme-toggle {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: color-mix(in oklab, var(--color-surface) 72%, transparent);
}

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

.hero {
  padding-block: clamp(var(--space-12), 10vw, var(--space-24));
}

.archive-ribbon {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  max-width: 100%;
  margin-bottom: var(--space-10);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: color-mix(in oklab, var(--color-surface) 72%, transparent);
  padding: var(--space-3) var(--space-5);
  color: var(--color-muted);
  font-size: var(--text-sm);
  box-shadow: var(--shadow-card);
}

.ribbon-dot {
  width: 0.6rem;
  height: 0.6rem;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--color-warm);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 410px);
  align-items: center;
  gap: clamp(var(--space-10), 7vw, var(--space-20));
}

.eyebrow,
.section-kicker {
  margin-bottom: var(--space-4);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1;
}

h1 {
  max-width: 10ch;
  font-size: var(--text-2xl);
}

h2 {
  font-size: var(--text-xl);
}

h3 {
  font-size: var(--text-lg);
  line-height: 1.2;
}

.hero-lede {
  max-width: 64ch;
  margin-top: var(--space-6);
  color: var(--color-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border-radius: var(--radius-full);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 700;
  text-decoration: none;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--color-primary);
  color: var(--color-inverse);
}

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

.button-secondary {
  border: 1px solid var(--color-border);
  background: color-mix(in oklab, var(--color-surface) 72%, transparent);
  color: var(--color-text);
}

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

.signal-card {
  position: relative;
  overflow: hidden;
  min-height: 460px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(145deg, color-mix(in oklab, var(--color-surface) 94%, transparent), color-mix(in oklab, var(--color-primary-soft) 55%, transparent)),
    var(--color-surface);
  padding: var(--space-8);
  box-shadow: var(--shadow-soft);
}

.signal-orbit {
  position: absolute;
  inset: var(--space-8);
  display: grid;
  place-items: center;
  opacity: 0.76;
}

.signal-orbit span {
  position: absolute;
  border: 1px solid color-mix(in oklab, var(--color-primary) 50%, transparent);
  border-radius: 50%;
}

.signal-orbit span:nth-child(1) {
  width: 60%;
  aspect-ratio: 1;
}

.signal-orbit span:nth-child(2) {
  width: 88%;
  aspect-ratio: 1 / 0.72;
  transform: rotate(-22deg);
}

.signal-orbit span:nth-child(3) {
  width: 92%;
  aspect-ratio: 1 / 0.64;
  transform: rotate(24deg);
}

.signal-card::after {
  position: absolute;
  left: 50%;
  top: 46%;
  width: 5rem;
  height: 5rem;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-primary), color-mix(in oklab, var(--color-primary) 16%, transparent) 68%);
  content: '';
  box-shadow: 0 0 60px color-mix(in oklab, var(--color-primary) 32%, transparent);
}

.signal-card dl {
  position: absolute;
  inset-inline: var(--space-8);
  bottom: var(--space-8);
  display: grid;
  gap: var(--space-3);
}

.signal-card dl div {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-3);
}

.signal-card dt {
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.signal-card dd {
  font-weight: 700;
}

.note-section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-20));
}

.note-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.76fr) minmax(0, 1fr);
  gap: clamp(var(--space-8), 7vw, var(--space-20));
  align-items: start;
}

.note-layout h2 {
  position: sticky;
  top: calc(72px + var(--space-8));
  max-width: 12ch;
}

.prose {
  display: grid;
  gap: var(--space-6);
  color: var(--color-muted);
}

.bridge-section {
  padding-block: clamp(var(--space-10), 7vw, var(--space-16));
}

.bridge-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(280px, 0.85fr);
  gap: var(--space-8);
  border-radius: calc(var(--radius-xl) + var(--space-2));
  background: var(--color-text);
  color: var(--color-inverse);
  padding: clamp(var(--space-6), 5vw, var(--space-12));
  box-shadow: var(--shadow-soft);
}

[data-theme='dark'] .bridge-panel {
  background: #eef0ea;
  color: #10201e;
}

.bridge-copy p {
  color: color-mix(in oklab, currentColor 76%, transparent);
}

.bridge-copy .disclaimer {
  margin-block: var(--space-5) var(--space-8);
  color: color-mix(in oklab, currentColor 62%, transparent);
  font-size: var(--text-sm);
}

.bridge-panel .button-primary {
  background: var(--color-inverse);
  color: var(--color-text);
}

[data-theme='dark'] .bridge-panel .button-primary {
  background: #10201e;
  color: #eef0ea;
}

.attune-list {
  display: grid;
  gap: var(--space-4);
}

.attune-list article {
  border: 1px solid color-mix(in oklab, currentColor 18%, transparent);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}

.attune-list span {
  display: inline-block;
  margin-bottom: var(--space-6);
  color: color-mix(in oklab, currentColor 54%, transparent);
  font-size: var(--text-xs);
  font-weight: 700;
}

.attune-list p {
  margin-top: var(--space-3);
  color: color-mix(in oklab, currentColor 64%, transparent);
  font-size: var(--text-sm);
}

.archive-section {
  padding-block: var(--space-16);
}

.archive-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: color-mix(in oklab, var(--color-surface) 78%, transparent);
  padding: clamp(var(--space-6), 4vw, var(--space-10));
}

.archive-card p:not(.section-kicker) {
  margin-top: var(--space-4);
  color: var(--color-muted);
}

.faq-section {
  padding-block: clamp(var(--space-12), 7vw, var(--space-20));
}

.faq-header {
  max-width: 620px;
  margin-bottom: var(--space-8);
}

.faq-list {
  display: grid;
  gap: var(--space-3);
}

details {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: color-mix(in oklab, var(--color-surface) 74%, transparent);
  padding: var(--space-5);
}

summary {
  cursor: pointer;
  font-weight: 700;
}

details p {
  margin-top: var(--space-4);
  color: var(--color-muted);
}

.site-footer {
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: var(--space-8);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
}

.footer-links a {
  text-decoration: none;
}

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

@media (max-width: 840px) {
  .nav-links {
    display: none;
  }

  .hero-grid,
  .note-layout,
  .bridge-panel,
  .archive-card {
    grid-template-columns: 1fr;
  }

  .note-layout h2 {
    position: static;
    max-width: 14ch;
  }

  .signal-card {
    min-height: 360px;
  }

  .archive-card .button {
    justify-self: start;
  }

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

@media (max-width: 520px) {
  .header-inner,
  .footer-inner,
  .hero,
  .note-section,
  .bridge-section,
  .archive-section,
  .faq-section {
    width: min(100% - var(--space-6), 1160px);
  }

  .brand span {
    display: none;
  }

  h1 {
    max-width: 9ch;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}