:root {
  --bg: #0a0d12;
  --ink: #f4f6ed;
  --muted: #b8c4c8;
  --line: rgba(255, 255, 255, 0.14);
  --panel: rgba(12, 18, 26, 0.78);
  --cyan: #2de2e6;
  --green: #9dff5c;
  --magenta: #ff4ecd;
  --orange: #ff8a2a;
  --blue: #5477ff;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.36);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

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

.stage-canvas {
  position: fixed;
  inset: 0;
  z-index: -3;
  width: 100vw;
  height: 100vh;
  background: radial-gradient(circle at 18% 20%, rgba(84, 119, 255, 0.22), transparent 30%),
    radial-gradient(circle at 80% 10%, rgba(255, 78, 205, 0.18), transparent 28%),
    linear-gradient(135deg, #0a0d12 0%, #151827 52%, #0a0d12 100%);
}

.texture {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(to bottom, black, transparent 88%);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 56px);
  background: rgba(10, 13, 18, 0.78);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 850;
}

.brand-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  color: #071016;
  background: linear-gradient(135deg, var(--green), var(--cyan));
  border-radius: 8px;
  font-weight: 900;
}

.nav-links {
  display: flex;
  gap: clamp(12px, 2.4vw, 26px);
  color: var(--muted);
  font-size: 14px;
  font-weight: 750;
}

.nav-links a:hover {
  color: var(--cyan);
}

.hero {
  min-height: calc(100vh - 74px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 390px);
  align-items: end;
  gap: clamp(30px, 6vw, 86px);
  padding: clamp(76px, 10vw, 132px) clamp(18px, 4vw, 56px) clamp(52px, 8vw, 96px);
}

.eyebrow,
.section-kicker,
.panel-tag {
  color: var(--green);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 1030px;
  margin-bottom: 24px;
  font-size: clamp(46px, 8.2vw, 112px);
  line-height: 0.95;
  letter-spacing: 0;
}

h2 {
  max-width: 800px;
  font-size: clamp(32px, 5vw, 66px);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  font-size: 22px;
  line-height: 1.15;
}

.hero-text {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 850;
  transition: transform 160ms ease, border-color 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
}

.button.primary {
  color: #071016;
  background: linear-gradient(135deg, var(--green), var(--cyan));
  border-color: transparent;
}

.button.secondary {
  background: rgba(255,255,255,.07);
}

.hero-panel {
  padding: 26px;
  border: 1px solid rgba(45, 226, 230, 0.28);
  border-radius: 10px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero-panel strong {
  display: block;
  margin: 14px 0 10px;
  font-size: 28px;
  line-height: 1.08;
}

.hero-panel p,
.intro-band p,
.section-heading > p,
.community p {
  color: var(--muted);
}

.intro-band,
.section {
  padding: clamp(64px, 9vw, 118px) clamp(18px, 4vw, 56px);
  border-top: 1px solid var(--line);
}

.intro-band,
.section-heading,
.open-section,
.community {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, .74fr);
  gap: clamp(24px, 6vw, 76px);
  align-items: start;
}

.intro-band {
  background: linear-gradient(90deg, rgba(45,226,230,.1), rgba(255,138,42,.1), rgba(157,255,92,.08));
}

.learning-grid,
.software-grid,
.video-grid,
.open-grid,
.glossary-grid {
  display: grid;
  gap: 16px;
  margin-top: 36px;
}

.learning-grid,
.open-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

.glossary-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.card,
.video-card,
.software-card,
.term-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  box-shadow: 0 18px 52px rgba(0,0,0,.22);
  overflow: hidden;
}

.card,
.software-card,
.term-card {
  padding: 24px;
}

.card p,
.software-card p,
.term-card p {
  color: var(--muted);
}

.software-card[data-accent="magenta"] {
  border-color: rgba(255,78,205,.42);
}

.software-card[data-accent="green"] {
  border-color: rgba(157,255,92,.42);
}

.software-card[data-accent="orange"] {
  border-color: rgba(255,138,42,.48);
}

.software-card a,
.card a {
  color: var(--cyan);
  font-weight: 800;
}

.video-frame {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
  display: block;
  background: #05070b;
}

.video-content {
  padding: 20px;
}

.video-content span {
  color: var(--orange);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.open-section .open-grid {
  margin-top: 0;
}

.community {
  margin: clamp(28px, 4vw, 56px);
  padding: clamp(30px, 6vw, 66px);
  border: 1px solid rgba(157,255,92,.34);
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(84,119,255,.14), rgba(45,226,230,.11), rgba(255,138,42,.12));
  box-shadow: var(--shadow);
}

.community .button {
  align-self: center;
  justify-self: end;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(18px, 4vw, 56px);
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 14px;
}

@media (max-width: 1060px) {
  .hero,
  .intro-band,
  .section-heading,
  .open-section,
  .community {
    grid-template-columns: 1fr;
  }

  .learning-grid,
  .open-grid,
  .software-grid,
  .video-grid,
  .glossary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .community .button {
    justify-self: start;
  }
}

@media (max-width: 700px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero {
    min-height: auto;
    padding-top: 54px;
  }

  .learning-grid,
  .open-grid,
  .software-grid,
  .video-grid,
  .glossary-grid {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
  }
}