* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--ag-obsidian-950);
  color: var(--ag-text);
  font-family: var(--ag-font-ui);
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 18% 8%, rgba(52,232,255,.12), transparent 28rem),
    radial-gradient(circle at 85% 18%, rgba(255,32,94,.10), transparent 30rem),
    linear-gradient(180deg, #05080b 0%, #030506 100%);
}

.grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .18;
  background-image:
    linear-gradient(rgba(52,232,255,.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(52,232,255,.09) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, #000 0%, transparent 82%);
}

.topbar, footer {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 4rem);
  font-family: var(--ag-font-mono);
  letter-spacing: .16em;
  font-size: .75rem;
}

.topbar {
  border-bottom: 1px solid var(--ag-border);
  background: rgba(4,6,8,.72);
  backdrop-filter: blur(18px);
}

.brand { display: flex; align-items: center; gap: .75rem; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border: 1px solid var(--ag-cyan);
  color: var(--ag-cyan);
  transform: rotate(45deg);
  box-shadow: var(--ag-shadow-cyan);
}
.brand-mark::first-letter { transform: rotate(-45deg); }

.status { color: var(--ag-text-muted); }
.status i {
  display: inline-block;
  width: .55rem;
  height: .55rem;
  margin-right: .5rem;
  border-radius: 999px;
  background: var(--ag-lime);
  box-shadow: 0 0 18px rgba(157,255,66,.7);
}

main {
  position: relative;
  z-index: 1;
  width: min(1200px, calc(100% - 2rem));
  margin: 0 auto;
}

.hero {
  min-height: 62vh;
  display: grid;
  align-content: center;
  justify-items: start;
  padding: 5rem 0 3rem;
}

.eyebrow {
  font-family: var(--ag-font-mono);
  color: var(--ag-cyan);
  letter-spacing: .2em;
  font-size: .75rem;
}

h1 {
  margin: .5rem 0;
  max-width: 9ch;
  font-size: clamp(4rem, 13vw, 9rem);
  line-height: .82;
  letter-spacing: -.07em;
  font-family: var(--ag-font-display);
}

h1 span {
  color: var(--ag-red);
  text-shadow: var(--ag-shadow-red);
}

.lead {
  margin: 1.5rem 0 .25rem;
  font-size: clamp(1.25rem, 3vw, 2rem);
}

.sublead { color: var(--ag-text-muted); }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 2rem;
}

.actions a {
  padding: .9rem 1.2rem;
  border-radius: var(--ag-radius-sm);
  text-decoration: none;
  font-family: var(--ag-font-mono);
  font-weight: 700;
  letter-spacing: .08em;
}

.primary {
  color: #001014;
  background: var(--ag-cyan);
  box-shadow: var(--ag-shadow-cyan);
}

.secondary {
  color: var(--ag-text);
  border: 1px solid var(--ag-border);
  background: var(--ag-panel);
}

.rail {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin: 0 0 3rem;
  border: 1px solid var(--ag-border);
  background: var(--ag-border);
}

.rail article {
  min-height: 220px;
  padding: 1.5rem;
  background: var(--ag-panel-strong);
  backdrop-filter: blur(16px);
}

.rail small {
  color: var(--ag-cyan);
  font-family: var(--ag-font-mono);
}

.rail h2 {
  margin: 2rem 0 .6rem;
  font-size: 1rem;
  letter-spacing: .08em;
}

.rail p {
  margin: 0;
  color: var(--ag-text-muted);
  line-height: 1.55;
}

.corridor {
  padding: 1.5rem;
  margin-bottom: 5rem;
  border: 1px solid rgba(255,59,59,.22);
  background: linear-gradient(90deg, rgba(52,232,255,.05), rgba(255,59,59,.06));
}

.corridor > p {
  margin-top: 0;
  font-family: var(--ag-font-mono);
  color: var(--ag-red);
  font-size: .72rem;
  letter-spacing: .2em;
}

.corridor div {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .7rem;
  font-family: var(--ag-font-mono);
}

.corridor b { color: var(--ag-cyan); }

footer {
  border-top: 1px solid var(--ag-border);
  color: var(--ag-text-muted);
}

@media (max-width: 820px) {
  .rail { grid-template-columns: 1fr 1fr; }
  .topbar { align-items: flex-start; }
  .status { text-align: right; }
}

@media (max-width: 560px) {
  .rail { grid-template-columns: 1fr; }
  .topbar, footer { flex-direction: column; }
  .status { text-align: left; }
  .hero { min-height: auto; padding-top: 4rem; }
  .actions a { width: 100%; text-align: center; }
}