:root {
  --bg: #07111e;
  --bg-soft: #0b1426;
  --panel: rgba(14, 25, 43, 0.82);
  --panel-strong: rgba(10, 18, 32, 0.94);
  --line: rgba(157, 211, 255, 0.15);
  --line-strong: rgba(157, 211, 255, 0.28);
  --text: #edf5ff;
  --muted: #adc2e1;
  --blue: #4bc4ff;
  --cyan: #82f3ff;
  --green: #49d8a8;
  --purple: #aa90ff;
  --gold: #f0d28e;
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.38);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Manrope", system-ui, sans-serif;
  line-height: 1.6;
  background:
    radial-gradient(circle at 12% 10%, rgba(75, 196, 255, 0.16), transparent 24%),
    radial-gradient(circle at 84% 12%, rgba(73, 216, 168, 0.1), transparent 22%),
    radial-gradient(circle at 78% 76%, rgba(170, 144, 255, 0.14), transparent 24%),
    linear-gradient(180deg, #07111e 0%, #08111f 44%, #0a1528 100%);
  min-height: 100vh;
}

body.nav-scrolled .site-nav {
  background: rgba(7, 17, 30, 0.86);
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

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

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

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: "Sora", "Manrope", system-ui, sans-serif;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

p {
  margin: 0;
}

.site-shell {
  width: min(1200px, calc(100% - 36px));
  margin: 0 auto;
}

.page-glow {
  position: fixed;
  width: 30rem;
  height: 30rem;
  border-radius: 999px;
  filter: blur(64px);
  opacity: 0.14;
  pointer-events: none;
  z-index: 0;
}

.page-glow-left {
  top: -10rem;
  left: -9rem;
  background: var(--blue);
}

.page-glow-right {
  right: -8rem;
  bottom: 8rem;
  background: var(--purple);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  z-index: 60;
  background: linear-gradient(90deg, var(--blue), var(--green), var(--purple));
  box-shadow: 0 0 18px rgba(75, 196, 255, 0.4);
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: rgba(7, 17, 30, 0.74);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--blue), var(--green) 58%, var(--purple));
  box-shadow: 0 0 36px rgba(75, 196, 255, 0.3);
}

.brand-copy span {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a,
.nav-links .active {
  padding: 8px 11px;
  border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.is-active,
.nav-links .active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

main section {
  position: relative;
  z-index: 1;
  padding: 44px 0 26px;
}

.hero {
  padding: 78px 0 42px;
}

.hero-grid,
.two-col,
.page-grid,
.cross-grid,
.split-hero {
  display: grid;
  gap: 20px;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.12fr) minmax(340px, 0.88fr);
  align-items: stretch;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 8px 13px;
  border-radius: 999px;
  border: 1px solid rgba(130, 243, 255, 0.22);
  background: rgba(75, 196, 255, 0.08);
  color: #ddfbff;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

h1 {
  margin-top: 20px;
  max-width: 860px;
  font-size: clamp(3rem, 7vw, 5.5rem);
}

.gradient-line {
  background: linear-gradient(90deg, #ffffff 0%, var(--blue) 42%, var(--green) 72%, var(--purple) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead,
.section-head p,
.card p,
.panel p,
.text-block p,
.footer-note,
.resource p,
.primitive-card p,
.disclaimer-list li,
.doc-list li {
  color: var(--muted);
}

.hero-lead {
  max-width: 820px;
  margin-top: 24px;
  font-size: clamp(1.07rem, 1.8vw, 1.32rem);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border-radius: 16px;
  font-size: 15px;
  font-weight: 800;
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.22);
}

.btn-primary {
  color: #04111d;
  background: linear-gradient(135deg, var(--cyan), var(--green));
  box-shadow: 0 18px 52px rgba(73, 216, 168, 0.18);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
}

.hero-stats,
.card-grid,
.resource-grid,
.primitive-grid,
.nav-card-grid {
  display: grid;
  gap: 16px;
}

.hero-stats,
.card-grid.three,
.resource-grid,
.nav-card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card-grid.two,
.two-col,
.cross-grid,
.page-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-grid {
  align-items: start;
}

.card,
.panel,
.text-block,
.hero-visual,
.primitive-card,
.resource,
.nav-card,
.callout,
.data-strip,
.footer-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.03));
  box-shadow: var(--shadow);
}

.card,
.panel,
.text-block,
.primitive-card,
.resource,
.nav-card,
.callout,
.data-strip,
.footer-card {
  padding: 24px;
}

.hero-visual {
  overflow: hidden;
  padding: 18px;
  border-radius: var(--radius-xl);
  border-color: var(--line-strong);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.03)),
    rgba(8, 15, 28, 0.96);
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-visual .caption-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 14px;
}

.caption-card {
  padding: 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.caption-card h3,
.card h3,
.panel h3,
.resource h3,
.primitive-card h3,
.nav-card h3 {
  margin-bottom: 10px;
  font-size: 1.2rem;
}

.section-head {
  margin-bottom: 24px;
}

.kicker {
  margin-bottom: 10px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.section-head h2 {
  max-width: 860px;
  font-size: clamp(2rem, 4vw, 3.3rem);
}

.section-head p {
  max-width: 820px;
  margin-top: 14px;
  font-size: 1.05rem;
}

.tag {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.tag-blue {
  color: #dff9ff;
  background: rgba(75, 196, 255, 0.14);
}

.tag-green {
  color: #ddffef;
  background: rgba(73, 216, 168, 0.14);
}

.tag-purple {
  color: #eee7ff;
  background: rgba(170, 144, 255, 0.14);
}

.tag-gold {
  color: #fff1c9;
  background: rgba(240, 210, 142, 0.12);
}

.diagram-frame {
  overflow: hidden;
  padding: 18px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02)),
    rgba(7, 14, 27, 0.94);
  box-shadow: var(--shadow);
}

.stats-strip {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.stats-strip .data-strip strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.42rem;
}

.list-clean,
.doc-list,
.disclaimer-list {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.primitive-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.primitive-card small,
.note,
.status-note {
  display: block;
  margin-top: 12px;
  color: #d7e6fb;
  font-size: 0.88rem;
}

.table-wrap {
  overflow: auto;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  background: rgba(255, 255, 255, 0.03);
}

th,
td {
  padding: 18px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

th {
  color: #e7fbff;
  background: rgba(75, 196, 255, 0.1);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

td {
  color: var(--muted);
}

.quote-block {
  padding: 26px;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(150deg, rgba(75, 196, 255, 0.12), rgba(170, 144, 255, 0.1)),
    rgba(255, 255, 255, 0.03);
  box-shadow: var(--shadow);
}

.quote-block p {
  color: #edf5ff;
  font-size: 1.08rem;
}

.footer {
  padding: 40px 0 56px;
}

.footer-note {
  margin-top: 8px;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

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

@media (max-width: 1160px) {
  .hero-grid,
  .page-grid,
  .two-col,
  .cross-grid,
  .card-grid.two {
    grid-template-columns: 1fr;
  }

  .hero-stats,
  .card-grid.three,
  .resource-grid,
  .nav-card-grid,
  .stats-strip {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 820px) {
  .site-shell {
    width: min(100% - 22px, 1200px);
  }

  .nav-links {
    display: none;
  }

  .hero {
    padding-top: 56px;
  }

  h1 {
    font-size: 2.75rem;
  }

  .hero-visual .caption-grid,
  .primitive-grid {
    grid-template-columns: 1fr;
  }
}