:root {
  color-scheme: dark;
  --bg-base: #050608;
  --bg-surface: #0a0b0d;
  --bg-elevated: #121417;
  --bg-card: #1a1c21;
  --bg-card-hover: #22252b;
  --border: #2a2d35;
  --border-bright: #3f4450;
  --text-primary: #ffffff;
  --text-secondary: #a0a6b5;
  --text-muted: #62697a;
  --green: #00ff88;
  --teal: #6ac8bb;
  --orange: #ff6537;
  --blue: #55a6d8;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-card: 0 4px 6px rgba(0, 0, 0, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.05);
  --font-sans: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg-base);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text-primary);
  font-family: var(--font-sans);
  background:
    radial-gradient(ellipse at 20% 20%, rgba(0, 162, 255, 0.12), transparent 38%),
    radial-gradient(ellipse at 85% 8%, rgba(0, 255, 136, 0.08), transparent 34%),
    linear-gradient(180deg, #050608 0%, #08090b 100%);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  opacity: 0.11;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 8px 8px;
}

a {
  color: inherit;
}

.portal-topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 20px;
  min-height: 72px;
  padding: 14px 40px;
  background: rgba(0, 0, 0, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--border-bright);
  border-radius: 50%;
  background: #000000;
  box-shadow: var(--shadow-card);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-lockup strong {
  display: block;
}

.brand-lockup strong {
  font-size: 0.86rem;
  font-weight: 900;
  letter-spacing: 0.28em;
}

.portal-shell {
  width: min(1400px, 100%);
  margin: 0 auto;
  padding: 40px;
}

.hero-band {
  display: grid;
  min-height: 220px;
  padding: 38px 0 30px;
  border-bottom: 1px solid var(--border);
}

.hero-copy {
  display: grid;
  align-content: center;
  max-width: 860px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 840px;
  font-size: clamp(2.4rem, 5vw, 5.2rem);
  line-height: 0.94;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.module-section {
  padding: 34px 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

h2 {
  font-size: 1.08rem;
  font-weight: 900;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.module-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.module-card {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 250px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  box-shadow: var(--shadow-card);
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease;
}

.module-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-bright);
  background: var(--bg-card-hover);
}

.module-card-primary {
  border-color: rgba(0, 255, 136, 0.38);
}

.module-number {
  display: flex;
  align-items: center;
  min-height: 76px;
  padding: 0 22px;
  border-bottom: 1px solid var(--border);
  background: #000000;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.05em;
}

.module-card-primary .module-number {
  color: var(--green);
  text-shadow: 0 0 18px rgba(0, 255, 136, 0.22);
}

.module-content {
  display: grid;
  align-content: center;
  padding: 28px 22px;
}

.module-header h3 {
  font-size: 1.36rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  line-height: 1.1;
  text-transform: uppercase;
}

.module-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 14px;
  border-top: 1px solid var(--border);
  background: var(--bg-surface);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
}

.button:hover,
.button:focus-visible {
  border-color: var(--border-bright);
  outline: none;
}

.button-primary {
  background: var(--green);
  border-color: var(--green);
  color: #00160c;
}

@media (max-width: 980px) {
  .portal-topbar {
    padding: 12px 24px;
  }

  .portal-shell {
    padding: 28px 24px;
  }

  .module-grid {
    grid-template-columns: 1fr;
  }

  .module-card {
    min-height: 210px;
  }
}

@media (max-width: 560px) {
  .portal-topbar {
    padding: 14px 16px;
  }

  .portal-shell {
    padding: 22px 16px;
  }

  h1 {
    font-size: 2.15rem;
  }

  .hero-band {
    min-height: 0;
    padding-top: 22px;
  }
}