:root {
  --ink: #0f1414;
  --muted: #5f6a6a;
  --paper: #f7f2ea;
  --card: rgba(255, 255, 255, 0.82);
  --accent: #ff6b4a;
  --accent-2: #2fc4b2;
  --accent-3: #f2c14e;
  --shadow: 0 18px 50px rgba(16, 27, 24, 0.18);
  --radius-lg: 26px;
  --radius-md: 18px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 10%, rgba(47, 196, 178, 0.18), transparent 45%),
    radial-gradient(circle at 80% 0%, rgba(255, 107, 74, 0.2), transparent 40%),
    radial-gradient(circle at 20% 80%, rgba(242, 193, 78, 0.18), transparent 45%),
    var(--paper);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(15, 20, 20, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 20, 20, 0.05) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
  opacity: 0.4;
}

a {
  color: inherit;
  text-decoration: none;
}

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

img {
  max-width: 100%;
  display: block;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 48px;
  backdrop-filter: blur(16px);
  background: rgba(247, 242, 234, 0.85);
  border-bottom: 1px solid rgba(15, 20, 20, 0.08);
}

.logo {
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.85rem;
  display: inline-flex;
  gap: 10px;
  align-items: center;
}

.logo span {
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: none;
  color: var(--muted);
}

.header-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  font-size: 0.85rem;
}

.header-links a {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(15, 20, 20, 0.12);
  background: rgba(255, 255, 255, 0.6);
}

.header-links a.is-current {
  background: var(--ink);
  color: #fff;
}

.page {
  max-width: 1120px;
  margin: 0 auto;
  padding: 44px 24px 80px;
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  align-items: stretch;
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.7rem;
  color: var(--muted);
}

h1 {
  font-size: clamp(2.2rem, 3vw, 3.2rem);
  margin: 0;
}

h2 {
  margin: 0 0 12px;
  font-size: 1.4rem;
}

h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
}

.lede {
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.7;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(15, 20, 20, 0.08);
  font-size: 0.8rem;
}

.hero-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow);
}

.fact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
  font-size: 0.95rem;
}

.fact-list strong {
  color: var(--muted);
  font-weight: 600;
}

.section {
  margin-top: 36px;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--card);
  box-shadow: var(--shadow);
}

.section p {
  margin: 0 0 12px;
  line-height: 1.7;
}

.section ul {
  margin: 0;
  padding-left: 18px;
  line-height: 1.7;
}

.section .note {
  font-size: 0.92rem;
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  align-items: start;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}

.stat-card {
  background: rgba(15, 20, 20, 0.08);
  padding: 14px;
  border-radius: var(--radius-md);
}

.stat-card span {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.stat-card strong {
  font-size: 1.2rem;
}

.section-nav {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.section-nav a {
  padding: 6px 10px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-size: 0.85rem;
  color: var(--muted);
}

.section-nav a.is-active {
  border-color: rgba(15, 20, 20, 0.12);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.6);
}

.resource-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(15, 20, 20, 0.12);
  background: rgba(255, 255, 255, 0.6);
  margin: 4px 6px 0 0;
  font-size: 0.85rem;
}

.version-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.version-card {
  border-radius: var(--radius-md);
  padding: 18px;
  background: rgba(15, 20, 20, 0.08);
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 120px;
}

.version-card span {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.footer {
  margin-top: 40px;
  padding: 18px 24px 50px;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 720px) {
  .site-header {
    padding: 14px 20px;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .section-nav {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
  }
}