:root {
  color-scheme: light;
  --bg: #f7f7f5;
  --surface: #ffffff;
  --surface-2: #efefec;
  --ink: #0a0a0a;
  --muted: #676767;
  --line: #d8d8d3;
  --inverse: #ffffff;
  --inverse-bg: #0a0a0a;
  --max: 1160px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0a0a0a;
  --surface: #111111;
  --surface-2: #191919;
  --ink: #f5f5f2;
  --muted: #9a9a96;
  --line: #303030;
  --inverse: #0a0a0a;
  --inverse-bg: #f5f5f2;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  transition: color .2s ease, background .2s ease;
}
a { color: inherit; }
button { color: inherit; font: inherit; }
.skip-link { position: fixed; top: -60px; left: 20px; z-index: 100; padding: 10px 16px; color: var(--inverse); background: var(--inverse-bg); border-radius: 7px; }
.skip-link:focus { top: 20px; }

.page-loader { display: none; position: fixed; inset: 0; z-index: 1000; place-items: center; padding: 20px; color: var(--ink); background: var(--bg); }
.is-loading .page-loader { display: grid; animation: loader-exit .25s ease .85s forwards; }
.loader-shell { width: min(100%, var(--max)); }
.loader-top { padding: 18px 0; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.loader-top strong { font-size: 18px; letter-spacing: -.045em; }
.loader-grid { min-height: 600px; display: grid; grid-template-columns: 1.2fr .72fr; align-items: center; gap: 90px; }
.loader-grid > div { display: flex; flex-direction: column; gap: 14px; }
.skeleton-line, .skeleton-title, .skeleton-card, .skeleton-pill { display: block; background: var(--line); animation: skeleton-pulse .9s ease-in-out infinite alternate; }
.skeleton-line { width: 58%; height: 13px; border-radius: 4px; }
.skeleton-line.short { width: 29%; height: 10px; margin-bottom: 12px; }
.skeleton-line.wide { width: 77%; margin-top: 14px; }
.skeleton-title { width: 86%; height: clamp(66px, 8vw, 104px); border-radius: 8px; }
.skeleton-title.medium { width: 68%; }
.skeleton-card { width: 100%; min-height: 405px; border-radius: 14px; }
.skeleton-pill { width: 112px; height: 34px; border-radius: 8px; }
@keyframes skeleton-pulse { from { opacity: .42; } to { opacity: .82; } }
@keyframes loader-exit { to { opacity: 0; visibility: hidden; } }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 18px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(16px);
}
.brand { font-size: 18px; font-weight: 820; text-decoration: none; letter-spacing: -.045em; }
.github-link { padding: 8px 12px; color: var(--ink); border: 1px solid var(--line); border-radius: 7px; background: var(--surface); text-decoration: none; font-size: 12px; font-weight: 700; }
.github-link:hover, .github-link:focus-visible { color: var(--inverse); border-color: var(--inverse-bg); background: var(--inverse-bg); }
.theme-toggle { position: fixed; right: 18px; bottom: 18px; z-index: 25; padding: 9px 12px; color: var(--inverse); border: 1px solid var(--inverse-bg); border-radius: 999px; background: var(--inverse-bg); box-shadow: 0 5px 20px rgba(0,0,0,.12); font-size: 11px; font-weight: 750; cursor: pointer; }
.theme-toggle:hover, .theme-toggle:focus-visible { transform: translateY(-1px); }

.section { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; padding: 112px 0; }
.hero { min-height: 690px; display: grid; grid-template-columns: 1.2fr .72fr; align-items: center; gap: 90px; padding-top: 68px; }
.eyebrow { margin: 0 0 18px; color: var(--muted); font: 700 11px/1.3 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .13em; text-transform: uppercase; }
.eyebrow-link { display: inline-flex; align-items: center; gap: 9px; width: fit-content; text-decoration: none; }
.eyebrow-link img { width: 27px; height: 27px; object-fit: contain; }
.eyebrow-link span { border-bottom: 1px solid transparent; }
.eyebrow-link:hover span, .eyebrow-link:focus-visible span { color: var(--ink); border-bottom-color: currentColor; }
h1, h2, h3 { margin-top: 0; line-height: .98; letter-spacing: -.055em; }
h1 { margin-bottom: 28px; font-size: clamp(4rem, 8vw, 7.4rem); font-weight: 790; }
h1 span { color: var(--muted); }
h2 { margin-bottom: 0; font-size: clamp(2.5rem, 5vw, 4.8rem); }
h3 { font-size: 1.15rem; }
.hero-lede { max-width: 570px; margin: 0; color: var(--muted); font-size: 1.08rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 16px; border: 1px solid var(--ink); border-radius: 8px; text-decoration: none; font-size: 13px; font-weight: 750; transition: transform .18s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--inverse); background: var(--inverse-bg); }
.button-secondary { color: var(--ink); background: transparent; border-color: var(--line); }
.button-secondary:hover { border-color: var(--ink); }

.hero-panel { padding: 29px; color: var(--inverse); background: var(--inverse-bg); border-radius: 14px; }
.panel-kicker { margin: 0 0 24px; color: color-mix(in srgb, var(--inverse) 58%, transparent); font: 700 10px/1.3 ui-monospace, monospace; letter-spacing: .14em; text-transform: uppercase; }
.hero-metric { display: flex; align-items: end; gap: 14px; padding-bottom: 26px; border-bottom: 1px solid color-mix(in srgb, var(--inverse) 18%, transparent); }
.hero-metric strong { font-size: 4.5rem; line-height: .8; letter-spacing: -.07em; }
.hero-metric span { color: color-mix(in srgb, var(--inverse) 62%, transparent); font-size: 13px; }
.metric-grid { display: grid; grid-template-columns: 1fr 1fr; margin: 22px 0 24px; }
.metric-grid div { display: flex; flex-direction: column; gap: 3px; padding: 14px 0; }
.metric-grid div:nth-child(even) { padding-left: 18px; border-left: 1px solid color-mix(in srgb, var(--inverse) 18%, transparent); }
.metric-grid strong { font-size: 1.3rem; }
.metric-grid span { color: color-mix(in srgb, var(--inverse) 58%, transparent); font-size: 11px; }
.panel-link { color: var(--inverse); font: 600 12px/1.4 ui-monospace, monospace; text-decoration: none; }
.panel-link:hover { text-decoration: underline; }

.section-heading { display: grid; grid-template-columns: 1.1fr .6fr; gap: 50px; align-items: end; margin-bottom: 36px; }
.section-heading > p { margin: 0; color: var(--muted); font-size: 14px; }
.toolbar { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 20px; }
.filter { padding: 8px 12px; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; background: var(--surface); cursor: pointer; font-size: 12px; }
.filter span { padding-left: 3px; }
.filter:hover, .filter.is-active { color: var(--inverse); border-color: var(--inverse-bg); background: var(--inverse-bg); }

.module-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.module-card { min-height: 245px; padding: 21px; display: flex; flex-direction: column; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--surface); transition: background .18s ease; }
.module-card:hover { background: var(--surface-2); }
.module-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 28px; }
.module-icon { display: grid; place-items: center; width: 32px; height: 32px; border: 1px solid var(--line); border-radius: 50%; font: 700 10px/1 ui-monospace, monospace; }
.module-category { color: var(--muted); font: 700 9px/1.3 ui-monospace, monospace; text-transform: uppercase; letter-spacing: .08em; }
.module-card h3 { margin-bottom: 12px; font: 700 .96rem/1.25 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: -.035em; overflow-wrap: anywhere; }
.module-card p { margin: 0 0 22px; color: var(--muted); font-size: 12.5px; }
.module-card a { margin-top: auto; font-size: 12px; font-weight: 750; text-decoration: none; }
.module-card a:hover { text-decoration: underline; }

.contributions { padding-top: 112px; }
.contribution-summary { display: grid; grid-template-columns: 130px 130px 1fr auto; gap: 10px; align-items: center; margin-bottom: 18px; }
.status-card { padding: 13px 15px; display: flex; align-items: baseline; gap: 8px; color: var(--muted); border: 1px solid var(--line); border-radius: 8px; background: var(--surface); cursor: pointer; text-align: left; }
.status-card strong { color: var(--ink); font-size: 1.35rem; }
.status-card.is-active { color: var(--inverse); border-color: var(--inverse-bg); background: var(--inverse-bg); }
.status-card.is-active strong { color: var(--inverse); }
.progress { height: 4px; overflow: hidden; background: var(--line); }
.progress span { display: block; height: 100%; background: var(--ink); }
.merge-rate { color: var(--muted); font: 600 11px/1.3 ui-monospace, monospace; }
.contribution-list { border-top: 1px solid var(--line); }
.contribution-item { display: grid; grid-template-columns: 72px 1fr auto; gap: 18px; align-items: center; padding: 15px 2px; color: inherit; border-bottom: 1px solid var(--line); text-decoration: none; }
.contribution-item:hover .contribution-title { text-decoration: underline; }
.contribution-date, .contribution-meta { color: var(--muted); font: 10.5px/1.3 ui-monospace, monospace; text-transform: uppercase; }
.contribution-title { font-size: 13px; font-weight: 650; }
.contribution-meta { white-space: nowrap; text-transform: none; }

.contact { margin-bottom: 100px; padding: 68px; text-align: center; color: var(--inverse); background: var(--inverse-bg); border-radius: 14px; }
.contact .eyebrow, .contact > p:not(.eyebrow) { color: color-mix(in srgb, var(--inverse) 60%, transparent); }
.contact h2 { margin-bottom: 18px; }
.contact > p:not(.eyebrow) { margin: 0; }
.contact .hero-actions { justify-content: center; }
.contact .button-primary { color: var(--ink); background: var(--bg); border-color: var(--bg); }
.contact .button-secondary { color: var(--inverse); border-color: color-mix(in srgb, var(--inverse) 35%, transparent); }
.site-footer { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; padding: 27px 0 42px; display: flex; justify-content: space-between; gap: 20px; color: var(--muted); border-top: 1px solid var(--line); font-size: 11px; }

.reveal { opacity: 1; transform: none; }

@media (max-width: 1180px) { .site-header { width: calc(100% - 40px); } }
@media (max-width: 920px) {
  .loader-grid { min-height: 560px; grid-template-columns: 1fr; gap: 28px; padding: 70px 0; }
  .skeleton-card { min-height: 230px; }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 48px; padding-top: 105px; }
  .section-heading { grid-template-columns: 1fr; gap: 16px; }
  .module-grid { grid-template-columns: repeat(2, 1fr); }
  .contribution-summary { grid-template-columns: 1fr 1fr; }
  .progress { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .page-loader { padding: 14px; }
  .loader-top { padding: 14px 0; }
  .loader-top strong { font-size: 17px; }
  .loader-grid { min-height: 600px; padding: 54px 0; }
  .skeleton-title { height: 56px; }
  .skeleton-card { min-height: 190px; }
  .site-header { width: calc(100% - 28px); }
  .brand { font-size: 17px; }
  .github-link { padding: 7px 10px; }
  .section { width: calc(100% - 28px); padding: 82px 0; }
  .hero { padding-top: 88px; }
  h1 { font-size: clamp(3.4rem, 17vw, 5.2rem); }
  .module-grid { grid-template-columns: 1fr; }
  .contribution-item { grid-template-columns: 1fr auto; gap: 6px 12px; }
  .contribution-date { grid-column: 1 / -1; }
  .contribution-title { font-size: 12.5px; }
  .contribution-meta { max-width: 112px; white-space: normal; text-align: right; }
  .theme-toggle { right: 12px; bottom: 12px; }
  .contact { padding: 52px 22px; margin-bottom: 60px; }
  .site-footer { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}