:root {
  --bg: #030d1a;
  --bg-mid: #061424;
  --bg-card: #081830;
  --fg: #c8d8e8;
  --fg-dim: #4a6070;
  --accent: #00e5ff;
  --accent-dim: rgba(0, 229, 255, 0.15);
  --amber: #f59e0b;
  --amber-dim: rgba(245, 158, 11, 0.15);
  --success: #00d68f;
  --border: rgba(0, 229, 255, 0.1);
  --font-display: 'Syne', sans-serif;
  --font-body: 'Figtree', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── NAV ── */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 64px;
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(3, 13, 26, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo-text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.5px;
  color: #fff;
}
.logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}
.nav-links {
  display: flex;
  gap: 40px;
}
.nav-links a {
  color: var(--fg-dim);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--fg); }

/* ── HERO ── */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding: 80px 64px;
  gap: 64px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 140%;
  height: 140%;
  background: radial-gradient(ellipse at 30% 50%, rgba(0, 229, 255, 0.06) 0%, transparent 60%);
  pointer-events: none;
}
.hero-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 28px;
}
.label-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 229, 255, 0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(0, 229, 255, 0); }
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(42px, 5vw, 72px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -2px;
  color: #fff;
  margin-bottom: 24px;
}
.headline-accent { color: var(--accent); }
.hero-sub {
  font-size: 18px;
  color: var(--fg-dim);
  max-width: 440px;
  line-height: 1.7;
  margin-bottom: 48px;
}
.hero-stats {
  display: flex;
  gap: 24px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  min-width: 110px;
}
.stat-value {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.5px;
}
.stat-label {
  font-size: 11px;
  color: var(--fg-dim);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── HERO VISUAL ── */
.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 32px;
}
.depth-meter {
  display: flex;
  align-items: stretch;
  gap: 16px;
  width: 100%;
  max-width: 380px;
}
.depth-line {
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), rgba(0, 229, 255, 0.1), transparent);
  flex-shrink: 0;
  border-radius: 1px;
  box-shadow: 0 0 8px rgba(0, 229, 255, 0.3);
}
.depth-label {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 120px;
  padding: 0;
}
.depth-mark {
  font-size: 11px;
  color: var(--fg-dim);
  letter-spacing: 0.05em;
}
.depth-mark.active { color: var(--accent); font-weight: 600; }

.whale-orb {
  position: relative;
  width: 280px;
  height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.orb-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0, 229, 255, 0.12);
}
.ring-1 { width: 280px; height: 280px; animation: ring-pulse 4s infinite ease-in-out; }
.ring-2 { width: 200px; height: 200px; animation: ring-pulse 4s infinite ease-in-out 0.5s; }
.ring-3 { width: 130px; height: 130px; animation: ring-pulse 4s infinite ease-in-out 1s; }
@keyframes ring-pulse {
  0%, 100% { border-color: rgba(0, 229, 255, 0.12); transform: scale(1); }
  50% { border-color: rgba(0, 229, 255, 0.3); transform: scale(1.03); }
}
.orb-core {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, var(--accent), #006a7a);
  box-shadow: 0 0 40px rgba(0, 229, 255, 0.4), 0 0 80px rgba(0, 229, 255, 0.15);
  z-index: 1;
}
.orb-data {
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  min-width: 220px;
  backdrop-filter: blur(8px);
}
.data-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  padding: 3px 0;
}
.data-key { color: var(--fg-dim); }
.data-val { color: var(--fg); font-weight: 500; }
.data-val.accent { color: var(--accent); font-weight: 700; font-family: var(--font-display); }

/* ── DEPTHS ── */
.depths {
  padding: 120px 64px;
  background: var(--bg-mid);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.depths-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}
.depth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  position: relative;
  overflow: hidden;
}
.depth-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0.6;
}
.depth-eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.depth-card h3 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}
.depth-card p {
  font-size: 15px;
  color: var(--fg-dim);
  line-height: 1.6;
}
.depth-surface::after, .depth-dive::after, .depth-intel::after, .depth-pod::after {
  content: '';
  position: absolute;
  right: -30px;
  top: -30px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 1px solid rgba(0, 229, 255, 0.05);
}

/* ── FEATURES ── */
.features {
  padding: 120px 64px;
}
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-tag {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
  display: block;
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 800;
  color: #fff;
  letter-spacing: -1.5px;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  max-width: 960px;
  margin: 0 auto;
}
.feature-item {
  background: var(--bg-card);
  padding: 28px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: background 0.2s;
}
.feature-item:hover { background: var(--bg-mid); }
.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}
.feature-body h4 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 6px;
}
.feature-body p {
  font-size: 13px;
  color: var(--fg-dim);
  line-height: 1.5;
}

/* ── NUMBERS ── */
.numbers {
  padding: 100px 64px;
  background: var(--bg-mid);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.numbers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  max-width: 900px;
  margin: 0 auto 80px;
}
.number-block {
  text-align: center;
}
.num-value {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -2px;
  line-height: 1;
  margin-bottom: 8px;
}
.num-label {
  font-size: 13px;
  color: var(--fg-dim);
  max-width: 180px;
  margin: 0 auto;
}
.methodology {
  max-width: 720px;
  margin: 0 auto;
}
.method-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-dim);
  text-align: center;
  margin-bottom: 40px;
}
.method-rules {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.rule {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}
.rule-num {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-dim);
  border-radius: 6px;
  padding: 6px 10px;
  flex-shrink: 0;
  letter-spacing: 0.05em;
}
.rule-body strong {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 4px;
}
.rule-body p {
  font-size: 14px;
  color: var(--fg-dim);
}

/* ── CLOSING ── */
.closing {
  padding: 140px 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.closing::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at 50% 60%, rgba(0, 229, 255, 0.05) 0%, transparent 65%);
  pointer-events: none;
}
.closing-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 28px;
}
.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 68px);
  font-weight: 800;
  letter-spacing: -2px;
  color: #fff;
  line-height: 1.08;
  margin-bottom: 28px;
}
.closing-sub {
  font-size: 18px;
  color: var(--fg-dim);
  max-width: 480px;
  margin: 0 auto 48px;
  line-height: 1.7;
}
.closing-pillars {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}
.pillar {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--fg-dim);
}
.pillar-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

/* ── FOOTER ── */
.footer {
  padding: 40px 64px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}
.footer-links {
  display: flex;
  gap: 28px;
}
.footer-links a {
  color: var(--fg-dim);
  text-decoration: none;
  font-size: 13px;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--fg); }
.footer-disclaimer {
  font-size: 12px;
  color: var(--fg-dim);
  opacity: 0.6;
  width: 100%;
  text-align: center;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  margin-top: 8px;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .nav { padding: 20px 24px; }
  .nav-links { display: none; }
  .hero {
    grid-template-columns: 1fr;
    padding: 60px 24px;
    gap: 48px;
    min-height: auto;
  }
  .hero-visual { align-items: flex-start; }
  .hero-stats { flex-wrap: wrap; }
  .depths { padding: 80px 24px; }
  .depths-grid { grid-template-columns: 1fr; }
  .features { padding: 80px 24px; }
  .feature-grid { grid-template-columns: 1fr; }
  .numbers { padding: 80px 24px; }
  .numbers-grid { grid-template-columns: 1fr; gap: 24px; }
  .num-value { font-size: 36px; }
  .closing { padding: 80px 24px; }
  .footer { padding: 32px 24px; }
  .footer-links { flex-wrap: wrap; gap: 16px; }
  .whale-orb { width: 200px; height: 200px; }
  .orb-ring.ring-1 { width: 200px; height: 200px; }
  .orb-ring.ring-2 { width: 140px; height: 140px; }
  .orb-ring.ring-3 { width: 90px; height: 90px; }
}