:root {
  --bg: #0a0f1b;
  --fg: #f0f4f9;
  --muted: #a8b8d8;
  --accent: #1ea896;
  --accent-2: #d4a574;
  --accent-warm: #e8b35a;
  --card: #1a2643;
  --line: #2d3f5f;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.65;
  overflow-x: hidden;
  letter-spacing: 0.3px;
}

.bg-video {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  z-index: -1;
  opacity: 0.8;
  pointer-events: none;
  background: var(--bg);
}

header.hero {
  padding: 5rem 1.5rem 4rem;
  max-width: 840px;
  margin: 0 auto;
}
.eyebrow { letter-spacing: 0.15em; text-transform: uppercase; font-size: 0.7rem; color: var(--accent); font-weight: 700; }
h1 { font-size: clamp(2rem, 4.6vw, 3.1rem); line-height: 1.15; margin: 0.5rem 0 0.9rem; max-width: 18ch; font-weight: 700; color: #fff; }
.lede { color: var(--fg); max-width: 52ch; font-size: 1.05rem; }

.hero-cta-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.2rem;
}

.proof {
  margin-top: 0.9rem;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 500;
}

main {
  max-width: 840px;
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
}
section { margin-bottom: 3.5rem; }
h2 { font-size: 1.35rem; margin-bottom: 0.9rem; border-bottom: 2px solid var(--accent); padding-bottom: 0.5rem; font-weight: 700; color: var(--fg); }

ul { padding-left: 1.1rem; color: var(--fg); }

ul li { margin-bottom: 0.65rem; }
.cards { display: grid; gap: 1rem; }
.cards-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cards article {
  background: linear-gradient(135deg, rgba(26, 38, 67, 0.8) 0%, rgba(20, 30, 56, 0.6) 100%);
  border-radius: 14px;
  padding: 1.5rem;
  border: 1px solid rgba(45, 63, 95, 0.6);
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
  backdrop-filter: blur(10px);
}
.cards article:hover { transform: translateY(-6px); border-color: var(--accent); box-shadow: 0 12px 32px rgba(30, 168, 150, 0.15); }
.cards h3 { margin: 0 0 0.5rem; font-size: 1.1rem; font-weight: 600; color: var(--accent-warm); }

details { margin-bottom: 0.75rem; color: var(--fg); }
summary { cursor: pointer; color: var(--fg); font-weight: 500; padding: 0.5rem 0; transition: color 220ms ease; }
summary:hover { color: var(--accent); }
details p { color: var(--muted); margin-top: 0.5rem; line-height: 1.7; }

.cta {
  background: linear-gradient(135deg, rgba(26, 38, 67, 0.9) 0%, rgba(30, 50, 80, 0.8) 100%);
  border-radius: 16px;
  padding: 2rem;
  border: 1px solid rgba(30, 168, 150, 0.2);
  backdrop-filter: blur(10px);
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 220ms ease;
}
.btn.primary {
  background: linear-gradient(120deg, var(--accent) 0%, #1f9d8a 100%);
  color: #fff;
  box-shadow: 0 10px 32px rgba(30, 168, 150, 0.3);
  border: none;
}

.btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(30, 168, 150, 0.4);
}

.btn.ghost {
  color: var(--fg);
  border: 2px solid var(--accent);
  background: rgba(26, 38, 67, 0.5);
  backdrop-filter: blur(10px);
}

.btn.ghost:hover {
  border-color: var(--accent-warm);
  background: rgba(26, 38, 67, 0.8);
}

footer {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px solid rgba(45, 63, 95, 0.4);
  margin-top: 2rem;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* Scenario cards */
.scenarios {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
}

.scenario-card {
  background: linear-gradient(135deg, rgba(26, 38, 67, 0.6) 0%, rgba(20, 30, 56, 0.4) 100%);
  border-radius: 12px;
  padding: 1.25rem;
  border-left: 3px solid var(--accent);
  backdrop-filter: blur(10px);
}

.scenario-label {
  color: var(--fg);
  font-weight: 600;
  margin: 0 0 0.75rem;
  font-size: 1rem;
}

.scenario-result {
  color: var(--muted);
  margin: 0;
  font-size: 0.95rem;
}

/* Execution timeline */
.execution-timeline {
  display: grid;
  gap: 2rem;
  margin-top: 2rem;
}

.phase {
  background: linear-gradient(135deg, rgba(26, 38, 67, 0.8) 0%, rgba(20, 30, 56, 0.6) 100%);
  border-radius: 14px;
  padding: 1.75rem;
  border: 1px solid rgba(30, 168, 150, 0.15);
  backdrop-filter: blur(10px);
}

.phase h3 {
  color: var(--accent-warm);
  margin: 0 0 1rem;
  font-size: 1.1rem;
  font-weight: 700;
}

.phase ul {
  padding-left: 1.25rem;
  color: var(--fg);
  margin: 0;
}

.phase li {
  margin-bottom: 0.5rem;
  color: var(--fg);
}

/* Comparison layout */
.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

.comparison-column {
  background: linear-gradient(135deg, rgba(26, 38, 67, 0.8) 0%, rgba(20, 30, 56, 0.6) 100%);
  border-radius: 14px;
  padding: 1.75rem;
  border: 1px solid rgba(45, 63, 95, 0.6);
  backdrop-filter: blur(10px);
}

.comparison-column h3 {
  color: var(--accent-warm);
  margin: 0 0 1.25rem;
  font-size: 1.1rem;
  font-weight: 700;
}

.comparison-column ul {
  padding-left: 1.25rem;
  color: var(--fg);
  margin: 0;
}

.comparison-column li {
  margin-bottom: 0.65rem;
  color: var(--fg);
  font-size: 0.95rem;
}

@keyframes floatA {
  0%,
  100% { transform: translateY(0px) translateX(0px); }
  50% { transform: translateY(18px) translateX(-12px); }
}

@keyframes floatB {
  0%,
  100% { transform: translateY(0px) translateX(0px); }
  50% { transform: translateY(-16px) translateX(10px); }
}

@media (max-width: 900px) {
  .cards-3 { grid-template-columns: 1fr; }
  .comparison { grid-template-columns: 1fr; }
}