html {
  color-scheme: dark;
  --bg: #0c0f12;
  --bg-elevated: #12161c;
  --bg-card: #151a22;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e8edf4;
  --text-muted: #9aa4b2;
  --accent: #6ee7b7;
  --accent-dim: rgba(110, 231, 183, 0.15);
  --accent-strong: #34d399;
  --hero-glow: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(110, 231, 183, 0.22), transparent 55%);
  --footer-cta-shade: rgba(110, 231, 183, 0.04);
  --font-sans: "DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: "Instrument Serif", Georgia, "Times New Roman", serif;
  --radius: 14px;
  --radius-sm: 10px;
  --max: 1040px;
  --space: clamp(1rem, 3vw, 2rem);
}

html[data-theme="light"] {
  color-scheme: light;
  --bg: #eef2f7;
  --bg-elevated: #ffffff;
  --bg-card: #ffffff;
  --border: rgba(15, 23, 42, 0.1);
  --text: #0f172a;
  --text-muted: #475569;
  --accent: #0d9488;
  --accent-dim: rgba(13, 148, 136, 0.12);
  --accent-strong: #0f766e;
  --hero-glow: radial-gradient(ellipse 80% 50% at 50% -18%, rgba(13, 148, 136, 0.2), transparent 55%);
  --footer-cta-shade: rgba(13, 148, 136, 0.06);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  background-image: linear-gradient(180deg, #0f1419 0%, var(--bg) 32%);
}

html[data-theme="light"] body {
  background-image: linear-gradient(180deg, #e2e8f0 0%, var(--bg) 36%);
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  left: var(--space);
  top: var(--space);
  width: auto;
  height: auto;
  padding: 0.5rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  z-index: 100;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
}

.site-header__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.85rem var(--space);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
}

.site-header__brand-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
  min-width: 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: -0.02em;
}

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

.brand__text-block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.12rem;
  min-width: 0;
}

.brand__tagline {
  font-family: var(--font-serif);
  font-size: 0.98rem;
  font-weight: 400;
  font-style: italic;
  line-height: 1.3;
  letter-spacing: 0.04em;
  color: var(--accent-strong);
  max-width: 26rem;
}

.brand__avatar {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 10px;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
}

.brand__text {
  font-size: 1.05rem;
}

.site-header__end {
  margin-left: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 1rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.25rem;
  font-size: 0.92rem;
}

.nav a {
  color: var(--text-muted);
  text-decoration: none;
}

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

.hero {
  position: relative;
  padding: clamp(2.5rem, 8vw, 5rem) var(--space) clamp(2rem, 5vw, 3.5rem);
  overflow: hidden;
}

.hero__glow {
  position: absolute;
  inset: 0;
  background: var(--hero-glow);
  pointer-events: none;
}

.hero__content {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
}

.hero__title {
  margin: 0 0 1rem;
  font-family: var(--font-serif);
  font-size: clamp(2.35rem, 5vw, 3.35rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero__title em {
  font-style: italic;
  color: var(--accent);
}

.hero__lead {
  margin: 0 0 1.5rem;
  max-width: 52ch;
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  color: var(--text-muted);
}

.hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0;
  margin: 0 0 1.75rem;
  list-style: none;
}

.chip {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.82rem;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
}

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

.chip--accent {
  border-color: transparent;
  background: var(--accent-dim);
  color: var(--accent);
}

html[data-theme="light"] .chip--accent {
  color: var(--accent-strong);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.15rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn--primary {
  background: var(--accent);
  color: #042018;
  border-color: color-mix(in srgb, var(--accent) 70%, #000);
}

html[data-theme="light"] .btn--primary {
  color: #f8fafc;
  border-color: color-mix(in srgb, var(--accent) 55%, #0f172a);
}

.btn--primary:hover {
  background: var(--accent-strong);
  color: #03140f;
}

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

.btn--ghost:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  color: var(--accent);
}

.section {
  padding: clamp(2rem, 5vw, 3.25rem) var(--space);
}

.section--tight {
  padding-top: 0;
}

.section__inner {
  max-width: var(--max);
  margin: 0 auto;
}

.section__head {
  margin-bottom: 1rem;
}

.section__head h2 {
  margin: 0 0 0.5rem;
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.section__sub {
  margin: 0;
  max-width: 65ch;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.prose h2 {
  margin: 0 0 0.75rem;
  font-size: 1.35rem;
  font-weight: 600;
}

.prose p {
  margin: 0 0 1rem;
  color: var(--text-muted);
  max-width: 65ch;
}

.prose p:last-child {
  margin-bottom: 0;
}

.pillars {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--text-muted);
  max-width: 65ch;
}

.pillars li {
  margin-bottom: 0.5rem;
}

.pillars li:last-child {
  margin-bottom: 0;
}

.pillars strong {
  color: var(--text);
}

.repo-hint {
  margin: 0 0 1rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.repo-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
}

.repo-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.1rem 1.15rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

html[data-theme="light"] .repo-card {
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.repo-card:hover {
  border-color: color-mix(in srgb, var(--accent) 35%, var(--border));
  transform: translateY(-2px);
}

.repo-card__name {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
}

.repo-card__name a {
  color: var(--text);
  text-decoration: none;
}

.repo-card__name a:hover {
  color: var(--accent);
}

.repo-card__desc {
  margin: 0;
  flex: 1;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.repo-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.repo-card__meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.section--footer-cta {
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, transparent, var(--footer-cta-shade));
}

.connect__intro {
  margin-bottom: 1.5rem;
}

.connect__intro h2 {
  margin: 0 0 0.5rem;
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.connect__lede {
  margin: 0;
  max-width: 70ch;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-muted);
}

.connect-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr));
}

.connect-card {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 1.2rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset;
  transition: border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

html[data-theme="light"] .connect-card {
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.07);
}

.connect-card:hover {
  border-color: color-mix(in srgb, var(--accent) 38%, var(--border));
  transform: translateY(-3px);
}

.connect-card--stat {
  background: linear-gradient(145deg, var(--bg-card), color-mix(in srgb, var(--accent-dim) 55%, var(--bg-card)));
}

.connect-card__badge {
  align-self: flex-start;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-strong);
  background: var(--accent-dim);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
}

.connect-card__title {
  margin: 0;
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
}

.connect-card__text {
  margin: 0;
  flex: 1;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--text-muted);
}

.connect-card__cta {
  margin-top: 0.15rem;
  align-self: flex-start;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-strong);
  text-decoration: none;
  text-underline-offset: 3px;
}

.connect-card__cta:hover {
  color: var(--accent);
  text-decoration: underline;
}

.connect-card__stat {
  margin: 0;
  font-size: clamp(2.25rem, 5vw, 2.85rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--accent);
}

.connect-card__hint {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--text-muted);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem var(--space) 2rem;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.site-footer__inner {
  max-width: var(--max);
  margin: 0 auto;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.4rem 0.85rem 0.4rem 0.45rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font: inherit;
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.theme-toggle:hover {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  color: var(--text);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--accent-strong);
  outline-offset: 2px;
}

.theme-toggle__track {
  position: relative;
  width: 2.5rem;
  height: 1.35rem;
  border-radius: 999px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.theme-toggle__thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: calc(1.35rem - 4px);
  height: calc(1.35rem - 4px);
  border-radius: 50%;
  background: var(--text-muted);
  transition: transform 0.22s ease, background 0.22s ease;
}

html[data-theme="light"] .theme-toggle__thumb {
  transform: translateX(calc(2.5rem - (1.35rem - 4px) - 6px));
  background: var(--accent-strong);
}

.theme-toggle__label {
  color: var(--text-muted);
  user-select: none;
}

.theme-toggle:hover .theme-toggle__label {
  color: var(--text);
}

.site-footer p {
  margin: 0 0 0.35rem;
}

.site-footer__note code {
  font-size: 0.85em;
  padding: 0.1em 0.35em;
  border-radius: 6px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
}

@media (max-width: 640px) {
  .site-header__brand-col {
    width: 100%;
  }

  .site-header__end {
    width: 100%;
    margin-left: 0;
    justify-content: flex-end;
  }

  .nav {
    width: 100%;
  }
}