:root,
[data-theme="light"] {
  --font-display: 'Zodiak', Georgia, serif;
  --font-body: 'General Sans', Inter, sans-serif;
  --text-xs: clamp(0.75rem, 0.72rem + 0.2vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.84rem + 0.2vw, 1rem);
  --text-base: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.5vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1vw, 2.2rem);
  --text-2xl: clamp(2.5rem, 1.7rem + 2.6vw, 4.8rem);
  --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;
  --radius-sm: 0.5rem;
  --radius-md: 0.875rem;
  --radius-lg: 1.25rem;
  --radius-xl: 1.75rem;
  --radius-full: 999px;
  --color-bg: #f4f6f5;
  --color-surface: #fbfcfb;
  --color-surface-2: #eef3f1;
  --color-surface-offset: #e4ece8;
  --color-border: rgba(18, 39, 37, 0.12);
  --color-text: #132523;
  --color-text-muted: #536563;
  --color-text-faint: #7b8c89;
  --color-primary: #0f766e;
  --color-primary-hover: #0c5d57;
  --color-primary-soft: #d8ece8;
  --color-highlight: #dca43a;
  --color-inverse: #f7faf9;
  --shadow-sm: 0 10px 30px rgba(18, 39, 37, 0.06);
  --shadow-md: 0 18px 48px rgba(18, 39, 37, 0.1);
  --content-wide: 1180px;
}

[data-theme="dark"] {
  --color-bg: #0d1514;
  --color-surface: #12201e;
  --color-surface-2: #172826;
  --color-surface-offset: #1d312f;
  --color-border: rgba(227, 237, 234, 0.12);
  --color-text: #edf5f2;
  --color-text-muted: #b6c4c0;
  --color-text-faint: #8ea09b;
  --color-primary: #49a89d;
  --color-primary-hover: #67bcae;
  --color-primary-soft: rgba(73, 168, 157, 0.14);
  --color-highlight: #e2b356;
  --color-inverse: #0d1514;
  --shadow-sm: 0 10px 30px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 18px 48px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  min-height: 100vh;
  background: radial-gradient(circle at top right, rgba(15, 118, 110, 0.08), transparent 24%), var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; border: 0; background: none; color: inherit; cursor: pointer; }

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100%;
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  z-index: 100;
}
.skip-link:focus { top: var(--space-4); }

.container {
  width: min(calc(100% - 2rem), var(--content-wide));
  margin: 0 auto;
}
.section {
  padding: clamp(var(--space-12), 8vw, var(--space-24)) 0;
}
.eyebrow {
  margin-bottom: var(--space-3);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.08;
  letter-spacing: -0.03em;
}
h1 { font-size: var(--text-2xl); max-width: 10ch; }
h2 { font-size: var(--text-xl); max-width: 16ch; }
h3 { font-size: var(--text-lg); }
p { color: var(--color-text-muted); max-width: 68ch; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: color-mix(in srgb, var(--color-bg) 82%, transparent);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 5rem;
}
.brand-mark { width: 160px; }
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.main-nav a:hover { color: var(--color-text); }
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.theme-toggle {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}
.theme-icon-moon { display: none; }
[data-theme="dark"] .theme-icon-sun { display: none; }
[data-theme="dark"] .theme-icon-moon { display: inline; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 var(--space-6);
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  font-size: var(--text-sm);
  font-weight: 600;
  transition: 180ms ease;
}
.button:hover { transform: translateY(-1px); }
.button-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.button-primary:hover { background: var(--color-primary-hover); }
.button-secondary {
  background: var(--color-surface);
  border-color: var(--color-border);
}
.button-sm { min-height: 2.75rem; padding: 0 var(--space-5); }

.hero { padding-top: clamp(var(--space-12), 10vw, 7rem); }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.9fr);
  gap: var(--space-10);
  align-items: start;
}
.hero-lead {
  margin-top: var(--space-4);
  color: var(--color-text);
  font-size: var(--text-lg);
  font-weight: 600;
}
.hero-text { margin-top: var(--space-5); }
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
}
.hero-metrics {
  list-style: none;
  margin-top: var(--space-10);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}
.hero-metrics li,
.panel-card,
.issue-card,
.feature-card,
.timeline-step,
.sector-card,
.roadmap-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.hero-metrics li {
  padding: var(--space-5);
}
.hero-metrics span,
.panel-label,
.roadmap-phase {
  display: block;
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}
.hero-metrics strong {
  font-size: var(--text-lg);
  color: var(--color-text);
  font-family: var(--font-display);
  font-weight: 600;
}
.hero-panel {
  display: grid;
  gap: var(--space-4);
}
.panel-card { padding: var(--space-8); }
.panel-primary {
  background: linear-gradient(160deg, var(--color-primary), color-mix(in srgb, var(--color-primary) 72%, black));
  color: #fff;
}
.panel-primary .panel-label,
.panel-primary h2 { color: #fff; }
.panel-primary h2 { max-width: 14ch; }
.panel-list ul,
.feature-card ul,
.stack-list,
.roadmap-card ul { list-style: none; display: grid; gap: var(--space-3); }
.panel-list li,
.feature-card li,
.stack-list li,
.roadmap-card li {
  color: var(--color-text-muted);
  padding-left: 1.15rem;
  position: relative;
}
.panel-list li::before,
.feature-card li::before,
.stack-list li::before,
.roadmap-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7rem;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--color-highlight);
}
.panel-primary li::before { background: #fff; }

.split-section,
.market-grid,
.business-grid,
.investor-grid,
.footer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-8);
  align-items: start;
}
.issue-card-grid,
.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}
.issue-card,
.feature-card,
.timeline-step,
.sector-card,
.roadmap-card { padding: var(--space-6); }
.issue-card span {
  display: inline-flex;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 700;
}
.section-heading {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}
.section-heading.narrow { max-width: 42rem; }
.section-accent {
  background: linear-gradient(180deg, transparent, color-mix(in srgb, var(--color-primary-soft) 72%, transparent));
}
.feature-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: var(--space-4);
}
.feature-card-large { grid-row: span 2; }
.timeline {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--space-4);
}
.timeline-step span {
  display: inline-flex;
  width: 2.5rem;
  height: 2.5rem;
  align-items: center;
  justify-content: center;
  border-radius: 0.75rem;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  margin-bottom: var(--space-5);
}
.tag-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-5);
}
.tag-list li {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-full);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: var(--text-sm);
}
.section-dark {
  background: linear-gradient(180deg, color-mix(in srgb, var(--color-surface-2) 70%, transparent), transparent);
}
.roadmap-card-highlight {
  background: color-mix(in srgb, var(--color-primary-soft) 68%, var(--color-surface));
}
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}
.footer-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: flex-start;
}
.footer-meta { margin-top: var(--space-4); font-size: var(--text-sm); }

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

@media (max-width: 980px) {
  .main-nav { display: none; }
  .hero-grid,
  .split-section,
  .market-grid,
  .business-grid,
  .investor-grid,
  .footer-grid,
  .feature-layout,
  .timeline,
  .issue-card-grid,
  .roadmap-grid {
    grid-template-columns: 1fr;
  }
  .hero-metrics { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .container { width: min(calc(100% - 1.25rem), var(--content-wide)); }
  .header-inner { min-height: 4.5rem; }
  .brand-mark { width: 138px; }
  h1 { max-width: 12ch; }
  .hero-actions,
  .header-actions { width: 100%; }
  .header-inner {
    flex-wrap: wrap;
    justify-content: space-between;
    padding: var(--space-3) 0;
  }
  .button,
  .button-sm { width: 100%; }
  .theme-toggle { width: 3rem; height: 3rem; }
  .panel-card,
  .issue-card,
  .feature-card,
  .timeline-step,
  .sector-card,
  .roadmap-card,
  .hero-metrics li { padding: var(--space-5); }
}