:root {
  --ink: #0c1116;
  --paper: #fbfbfa;
  --muted: #5b6570;
  --muted-dark: #98a3ae;
  --rule: #e2e5e8;
  --rule-dark: #262e37;
  --accent: #ff4a17;
  --wrap: 74rem;
  --sans: "Archivo", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

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

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.eyebrow, .label, .strip, .reg-idx, .tags li, .status, .id-role, .footer-inner, .nav {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.label {
  margin: 0 0 2.5rem;
  color: var(--muted);
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--rule);
}

.h2 {
  margin: 0 0 1.5rem;
  font-size: clamp(1.75rem, 4.2vw, 2.5rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.025em;
  max-width: 22ch;
}

.h2-wide { max-width: 26ch; }

.prose {
  margin: 0 0 2rem;
  max-width: 54ch;
  color: var(--muted);
  font-size: 1.0625rem;
}

.masthead {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(251, 251, 250, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}

.masthead-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 2rem;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.125rem;
  padding-bottom: 1.125rem;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: -0.015em;
  text-decoration: none;
}

.mark {
  width: 12px;
  height: 12px;
  border: 1.5px solid var(--ink);
  border-left-color: var(--accent);
  border-bottom-color: var(--accent);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  color: var(--muted);
}

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

.hero {
  position: relative;
  padding: clamp(3.5rem, 9vw, 6.5rem) 0 0;
  border-bottom: 1px solid var(--rule);
  background-image:
    linear-gradient(to right, var(--rule) 1px, transparent 1px),
    linear-gradient(to bottom, var(--rule) 1px, transparent 1px);
  background-size: 80px 80px;
  background-position: center top;
}

.hero > * { position: relative; }

.hero-grid {
  display: grid;
  gap: clamp(2.5rem, 6vw, 4rem);
  align-items: center;
  padding-bottom: clamp(3rem, 7vw, 4.5rem);
}

.eyebrow {
  margin: 0 0 1.75rem;
  color: var(--accent);
}

h1 {
  margin: 0;
  font-size: clamp(2.25rem, 7vw, 4.25rem);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.035em;
  max-width: 16ch;
  text-wrap: balance;
}

h1 em {
  font-style: normal;
  color: var(--accent);
}

.lede {
  margin: 1.75rem 0 0;
  max-width: 48ch;
  font-size: clamp(1.0625rem, 2vw, 1.1875rem);
  color: var(--muted);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 2rem;
  margin-top: 2.5rem;
}

.btn {
  display: inline-block;
  padding: 0.9375rem 1.75rem;
  background: var(--ink);
  color: var(--paper);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid var(--ink);
}

.btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-accent {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-accent:hover {
  background: transparent;
  color: var(--accent);
}

.btn-quiet {
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
}

.btn-quiet:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.hero-figure {
  display: none;
}

.hero-figure svg {
  width: 100%;
  height: auto;
  max-width: 400px;
  margin-left: auto;
  display: block;
}

.strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
  margin: 0;
  padding: 1rem 1.5rem;
  list-style: none;
  border-top: 1px solid var(--rule);
  color: var(--muted);
}

.section {
  padding: clamp(4rem, 9vw, 7rem) 0;
  border-bottom: 1px solid var(--rule);
}

.section-tight { padding-top: clamp(3rem, 6vw, 4.5rem); }

.split {
  display: grid;
  gap: 2.5rem;
}

.card-id {
  margin-top: 2rem;
  padding: 1.25rem;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  background: #fff;
}

.id-name {
  margin: 0;
  font-weight: 600;
  font-size: 1.0625rem;
}

.id-role {
  margin: 0.375rem 0 0;
  color: var(--muted);
}

.split-main p {
  margin: 0 0 1.5rem;
  max-width: 46ch;
  color: var(--muted);
}

.split-main .big {
  color: var(--ink);
  font-size: clamp(1.1875rem, 2.6vw, 1.5rem);
  line-height: 1.4;
  letter-spacing: -0.015em;
}

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

.register {
  margin: 0;
  padding: 0;
  list-style: none;
}

.register li {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 0 1rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--rule);
}

.register li:last-child { border-bottom: 1px solid var(--rule); }

.reg-idx {
  color: var(--muted);
  padding-top: 0.4rem;
}

.register h3 {
  margin: 0;
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.register p {
  grid-column: 2;
  margin: 0.375rem 0 0;
  max-width: 44ch;
  color: var(--muted);
}

.register li:hover .reg-idx,
.register li:hover h3 { color: var(--accent); }

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  margin: 0 0 2rem;
  padding: 0;
  list-style: none;
}

.tags li {
  padding: 0.5rem 0.875rem;
  border: 1px solid var(--rule);
  background: #fff;
  color: var(--ink);
  letter-spacing: 0.08em;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  color: var(--muted);
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}

.dark {
  background: var(--ink);
  color: var(--paper);
  border-bottom-color: var(--rule-dark);
  background-image:
    linear-gradient(to right, var(--rule-dark) 1px, transparent 1px),
    linear-gradient(to bottom, var(--rule-dark) 1px, transparent 1px);
  background-size: 80px 80px;
}

.dark .label {
  color: var(--muted-dark);
  border-bottom-color: var(--rule-dark);
}

.dark .prose { color: var(--muted-dark); }

.dark-alt { background-color: #141a21; }

.statement {
  margin: 0 0 2.5rem;
  font-size: clamp(2rem, 6.4vw, 3.75rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.035em;
}

.dark-cols {
  display: grid;
  gap: 1.5rem;
  max-width: 62rem;
}

.dark-cols p {
  margin: 0;
  color: var(--muted-dark);
  font-size: 1.0625rem;
  max-width: 48ch;
}

.dark-cols p:first-child {
  color: var(--paper);
  border-left: 2px solid var(--accent);
  padding-left: 1.25rem;
}

.site-footer {
  background: var(--ink);
  color: var(--muted-dark);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem 2rem;
  justify-content: space-between;
  padding-top: 2.25rem;
  padding-bottom: 2.25rem;
}

.focus-grid { display: grid; gap: 2.5rem; }

.col-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 1rem;
}

.status { margin-top: 0.5rem; }

.register li:first-child { border-top: 0; }
.register { margin-top: -0.5rem; }

@media (min-width: 56rem) {
  .hero-grid {
    grid-template-columns: 1.35fr 1fr;
  }
  .hero-figure { display: block; }

  .split {
    grid-template-columns: 1fr 1.25fr;
    gap: 4rem;
  }

  .register li {
    grid-template-columns: 4rem 14rem 1fr;
    align-items: baseline;
    gap: 0 2rem;
    padding: 1.75rem 0;
  }
  .register p {
    grid-column: 3;
    margin-top: 0;
  }

  .dark-cols {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }

  .focus-grid {
    grid-template-columns: 1.1fr 1fr;
    gap: 4rem;
    align-items: start;
  }
  .tags { max-width: 26rem; margin-bottom: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}