:root {
  --bg: #07141f;
  --bg-soft: #102637;
  --panel: rgba(10, 22, 33, 0.78);
  --panel-strong: rgba(16, 38, 55, 0.9);
  --ink: #eef8ff;
  --muted: #a7c2d3;
  --line: rgba(154, 203, 224, 0.18);
  --blue: #67d7ff;
  --mint: #71f2c8;
  --gold: #f7cf7b;
  --glow: rgba(103, 215, 255, 0.28);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Segoe UI", "Trebuchet MS", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(103, 215, 255, 0.12), transparent 34%),
    radial-gradient(circle at 80% 10%, rgba(113, 242, 200, 0.14), transparent 28%),
    linear-gradient(180deg, #09121b 0%, #07141f 48%, #081119 100%);
}

a {
  color: inherit;
}

.site-header,
.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 18px clamp(18px, 5vw, 64px);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(7, 20, 31, 0.7);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(103, 215, 255, 0.3), rgba(113, 242, 200, 0.3));
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.24);
}

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

nav a,
.footer-links a,
.text-link {
  text-decoration: none;
  color: var(--blue);
  font-weight: 700;
}

main {
  display: block;
}

.hero {
  padding: clamp(36px, 8vw, 86px) clamp(18px, 5vw, 64px) 48px;
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(300px, 0.82fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.03em;
}

h1 {
  margin-top: 18px;
  font-size: clamp(52px, 10vw, 108px);
  line-height: 0.92;
}

h2 {
  font-size: clamp(30px, 4vw, 48px);
}

h3 {
  font-size: 20px;
}

p {
  color: var(--muted);
  line-height: 1.62;
}

.hero-copy p.lead {
  font-size: clamp(18px, 2.2vw, 24px);
  max-width: 740px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 800;
}

.button.primary {
  background: linear-gradient(135deg, rgba(103, 215, 255, 0.92), rgba(113, 242, 200, 0.88));
  color: #082131;
  box-shadow: 0 18px 36px var(--glow);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink);
  border: 1px solid var(--line);
}

.hero-panel,
.card,
.timeline,
.diagram,
.table-panel {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 24px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.26);
}

.hero-panel {
  padding: 22px;
}

.hero-panel .panel-label {
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.signal-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.signal-list li {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.signal-list span {
  display: block;
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 6px;
}

.section {
  padding: 0 clamp(18px, 5vw, 64px) 56px;
}

.section-head {
  max-width: 800px;
  margin-bottom: 24px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card {
  padding: 22px;
}

.card strong {
  color: var(--ink);
}

.card.accent-blue {
  border-top: 4px solid var(--blue);
}

.card.accent-mint {
  border-top: 4px solid var(--mint);
}

.card.accent-gold {
  border-top: 4px solid var(--gold);
}

.timeline {
  padding: 18px;
}

.timeline-step {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 18px;
  padding: 16px 4px;
  border-bottom: 1px solid var(--line);
}

.timeline-step:last-child {
  border-bottom: 0;
}

.timeline-step strong {
  color: var(--gold);
}

.diagram {
  padding: 22px;
  overflow-x: auto;
}

.diagram pre {
  margin: 0;
  color: var(--ink);
  font: 600 14px/1.55 "Consolas", "Courier New", monospace;
}

.table-panel {
  padding: 10px;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 14px 12px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

th {
  color: var(--blue);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (max-width: 920px) {
  .site-header,
  .site-footer,
  .hero,
  .grid,
  .timeline-step {
    grid-template-columns: 1fr;
  }

  .site-header,
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}