:root {
  --bg: #0b1118;
  --panel: rgba(15, 23, 33, 0.88);
  --panel-muted: rgba(19, 29, 43, 0.92);
  --surface: rgba(255, 255, 255, 0.04);
  --line: rgba(255, 255, 255, 0.1);
  --text: #eef3f6;
  --muted: #9ca8b7;
  --cold: #7bc4ff;
  --amber: #e6b86a;
  --green: #9fe870;
  --shadow: 0 22px 80px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 0%, rgba(123, 196, 255, 0.12), transparent 22%),
    linear-gradient(180deg, #070b10 0%, #0b1118 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 42px 42px;
  opacity: 0.28;
  pointer-events: none;
  mask-image: linear-gradient(180deg, black, rgba(0, 0, 0, 0.2));
}

.masthead,
main,
.footer {
  position: relative;
  z-index: 1;
}

.masthead {
  position: sticky;
  top: 0;
  backdrop-filter: blur(14px);
  background: rgba(7, 11, 16, 0.74);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.masthead-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.site-id,
.nav a,
.quick-card,
.mirror-card {
  text-decoration: none;
}

.site-id {
  color: var(--text);
  font-family: "IBM Plex Mono", monospace;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.nav a {
  color: var(--muted);
  font-size: 0.92rem;
}

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

main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 30px 28px 40px;
}

.shell,
.quick-card,
.catalog-card,
.channel-row,
.mirror-card,
.notes-panel,
.release-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.hero {
  padding: 34px;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 22px;
}

.eyebrow,
.section-label,
.quick-tag,
.channel-name,
.release-mark,
.path-chip,
.site-id {
  font-family: "IBM Plex Mono", monospace;
}

.eyebrow,
.section-label {
  color: var(--cold);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.74rem;
}

.hero h1 {
  margin: 10px 0 14px;
  font-family: "Archivo Narrow", sans-serif;
  font-size: clamp(2.8rem, 6vw, 5.3rem);
  line-height: 0.96;
  max-width: 9ch;
}

.summary {
  color: var(--muted);
  line-height: 1.85;
  max-width: 600px;
}

.hero-quicklinks {
  display: grid;
  gap: 10px;
  align-self: end;
}

.hero-quicklinks a {
  color: var(--text);
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 14px 16px;
  text-transform: lowercase;
}

.quick-grid,
.catalog-grid,
.mirror-grid,
.release-list {
  display: grid;
  gap: 16px;
}

.quick-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 18px;
}

.quick-card,
.catalog-card,
.mirror-card,
.release-item {
  padding: 22px;
}

.quick-card {
  display: grid;
  gap: 10px;
  color: var(--text);
  transition: transform 180ms ease, border-color 180ms ease;
}

.quick-card:hover,
.catalog-card:hover,
.mirror-card:hover {
  transform: translateY(-3px);
  border-color: rgba(123, 196, 255, 0.24);
}

.quick-tag,
.release-mark {
  color: var(--amber);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.74rem;
}

.section-head {
  margin: 72px 0 22px;
  display: grid;
  gap: 10px;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 3rem);
}

.section-head p:last-child {
  margin: 0;
  max-width: 760px;
  color: var(--muted);
  line-height: 1.8;
}

.catalog-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.catalog-card h3,
.channel-row h3,
.mirror-card h3,
.release-item h3 {
  margin: 0 0 12px;
}

.catalog-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.9;
}

.channel-list {
  display: grid;
  gap: 14px;
}

.channel-row {
  padding: 24px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 20px;
  align-items: start;
}

.channel-name,
.path-chip {
  color: var(--green);
  font-size: 0.82rem;
}

.channel-row p:last-child,
.mirror-card p:last-child,
.release-item p:last-child,
.quick-card span:last-child {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.mirror-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.path-chip {
  display: inline-flex;
  border: 1px solid rgba(159, 232, 112, 0.16);
  border-radius: 999px;
  padding: 8px 11px;
  margin: 0 0 14px;
}

.notes-panel {
  padding: 26px;
}

.notes-panel ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.95;
}

.release-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px 34px;
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 420ms ease, transform 420ms ease;
}

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

@media (max-width: 900px) {
  .masthead-inner,
  .hero,
  .channel-row,
  .quick-grid,
  .catalog-grid,
  .mirror-grid,
  .release-list {
    grid-template-columns: 1fr;
  }

  .masthead-inner {
    display: grid;
  }

  main {
    padding: 22px 20px 34px;
  }
}

@media (max-width: 600px) {
  .hero {
    padding: 24px;
  }

  .hero-quicklinks a {
    padding: 12px 14px;
  }
}