@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display&family=Source+Sans+3:wght@400;500;600;700&display=swap');

:root {
  --bg: oklch(97% 0.01 60);
  --bg-alt: oklch(93.5% 0.016 57);
  --bg-raised: oklch(99.5% 0.003 58);
  --ink: oklch(18% 0.02 30);
  --muted: oklch(44% 0.025 40);
  --accent: oklch(52% 0.14 55);
  --accent-deep: oklch(38% 0.1 45);
  --nav: oklch(20% 0.015 30);
  --nav-border: oklch(28% 0.018 32);
  --card-border: oklch(88% 0.02 55);
  --radius: 0.75rem;
  --shadow: 0 1px 2px oklch(20% 0.02 30 / 0.06), 0 8px 24px oklch(20% 0.02 30 / 0.06);
  --max: 72rem;
  --serif: 'DM Serif Display', Georgia, serif;
  --sans: 'Source Sans 3', system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  font-size: 1rem;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-deep); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent); }

.serif { font-family: var(--serif); font-weight: 400; }
.muted { color: var(--muted); }
.accent { color: var(--accent-deep); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--nav);
  color: white;
  padding: 0.5rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: 1rem; top: 1rem; }

.site-nav {
  background: var(--nav);
  border-bottom: 1px solid var(--nav-border);
  position: sticky;
  top: 0;
  z-index: 50;
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  color: oklch(96% 0.006 55);
  text-decoration: none;
}
.brand-mark { font-family: var(--serif); font-size: 1.35rem; }
.brand-tag {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: oklch(62% 0.04 55);
  border: 1px solid oklch(35% 0.02 40);
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: oklch(72% 0.018 55);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.45rem 0.65rem;
  border-radius: 0.375rem;
  transition: color 0.15s, background 0.15s;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: oklch(96% 0.006 55);
  background: oklch(28% 0.018 33);
}
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid oklch(35% 0.02 40);
  color: oklch(90% 0.01 55);
  border-radius: 0.375rem;
  padding: 0.4rem 0.65rem;
  cursor: pointer;
  font: inherit;
}

.page { padding: 2.5rem 1.25rem 4rem; }
.container { max-width: var(--max); margin: 0 auto; }
.section { margin-bottom: 3.5rem; }
.section-title {
  font-family: var(--serif);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  margin: 0 0 0.75rem;
  color: var(--accent-deep);
}
.section-lead {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 42rem;
  margin: 0 0 1.75rem;
}

.hero {
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--card-border);
  margin-bottom: 2.5rem;
}
.hero-eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.75rem;
}
.hero h1 {
  font-family: var(--serif);
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1.05;
  margin: 0 0 1rem;
  color: var(--accent-deep);
  max-width: 16ch;
}
.hero-sub {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--muted);
  max-width: 38rem;
  margin: 0 0 1.75rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1.1rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--accent-deep);
  color: oklch(98% 0.01 60);
}
.btn-primary:hover { background: var(--accent); color: white; }
.btn-secondary {
  background: var(--bg-raised);
  border-color: var(--card-border);
  color: var(--ink);
}
.btn-secondary:hover { box-shadow: var(--shadow); }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}
.stat-card {
  background: var(--bg-raised);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}
.stat-value {
  font-family: var(--serif);
  font-size: 2rem;
  line-height: 1;
  color: var(--accent-deep);
  margin-bottom: 0.35rem;
}
.stat-label { font-size: 0.85rem; color: var(--muted); }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1rem;
}
.card {
  background: var(--bg-raised);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 0.5rem; font-size: 1.05rem; color: var(--accent-deep); }
.card p { margin: 0; font-size: 0.925rem; color: var(--muted); }
.card-link {
  display: block;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s, border-color 0.15s;
}
.card-link:hover {
  transform: translateY(-2px);
  border-color: oklch(78% 0.06 55);
}
.card-link .arrow {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-deep);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  background: var(--bg-raised);
  box-shadow: var(--shadow);
}
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
th, td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--card-border);
}
th {
  background: var(--bg-alt);
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}
tr:last-child td { border-bottom: none; }
td code {
  font-size: 0.8rem;
  background: var(--bg-alt);
  padding: 0.1rem 0.35rem;
  border-radius: 0.25rem;
}

.pipeline {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0.5rem;
  margin: 1.5rem 0;
}
.pipeline-step {
  flex: 1 1 8rem;
  background: var(--bg-raised);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1rem;
}
.pipeline-step strong {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-deep);
  margin-bottom: 0.35rem;
}
.pipeline-step span { font-size: 0.875rem; color: var(--muted); }
.pipeline-arrow {
  align-self: center;
  color: var(--muted);
  font-size: 1.25rem;
  flex: 0 0 auto;
}

pre {
  background: oklch(22% 0.015 30);
  color: oklch(92% 0.01 60);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  overflow-x: auto;
  font-size: 0.8rem;
  line-height: 1.5;
  margin: 1rem 0;
}
code { font-family: ui-monospace, 'Cascadia Code', monospace; }

.diagram-box {
  background: var(--bg-raised);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 1.5rem 0;
  overflow-x: auto;
}
.diagram-box pre {
  background: transparent;
  color: var(--ink);
  margin: 0;
  padding: 0;
  font-size: 0.75rem;
}

.tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  margin-right: 0.35rem;
  margin-bottom: 0.35rem;
}
.tag-live { background: oklch(92% 0.06 145); color: oklch(35% 0.1 145); }
.tag-pause { background: oklch(94% 0.04 75); color: oklch(40% 0.08 75); }
.tag-retail { background: oklch(93% 0.04 250); color: oklch(38% 0.08 250); }
.tag-auction { background: oklch(93% 0.05 55); color: oklch(38% 0.1 55); }

.timeline { border-left: 2px solid var(--card-border); margin-left: 0.5rem; padding-left: 1.5rem; }
.timeline-item { margin-bottom: 1.75rem; position: relative; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -1.85rem;
  top: 0.35rem;
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg);
}
.timeline-item h3 { margin: 0 0 0.25rem; font-size: 1rem; }
.timeline-item p { margin: 0; font-size: 0.9rem; color: var(--muted); }

.site-footer {
  background: var(--nav);
  border-top: 1px solid var(--nav-border);
  color: oklch(62% 0.018 50);
  padding: 2rem 1.25rem;
  font-size: 0.875rem;
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}
.site-footer a { color: oklch(78% 0.015 55); text-decoration: none; }
.site-footer a:hover { color: white; }

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--nav);
    border-bottom: 1px solid var(--nav-border);
    padding: 0.5rem;
  }
  .nav-links.open { display: flex; }
  .nav-inner { position: relative; flex-wrap: wrap; }
  .pipeline-arrow { display: none; }
  .hero h1 { max-width: none; }
}