:root {
  --bg: #0a0b0f;
  --bg-elevated: #12141c;
  --bg-card: #171a24;
  --fg: #e8e9ed;
  --fg-muted: #8a8d9a;
  --accent: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.15);
  --border: rgba(255,255,255,0.06);
  --gradient-start: #3b82f6;
  --gradient-end: #8b5cf6;
  --radius: 12px;
  --max-w: 1080px;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .hero-badge, .how-label, .stat-num, .footer-brand {
  font-family: 'Space Grotesk', sans-serif;
}

/* ─── Hero ─── */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px 60px;
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, var(--accent-glow) 0%, transparent 70%),
    var(--bg);
}

.hero-inner {
  max-width: var(--max-w);
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid rgba(59, 130, 246, 0.2);
  margin-bottom: 32px;
}

.hero h1 {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.025em;
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--fg) 40%, var(--fg-muted) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  max-width: 640px;
  margin: 0 auto 48px;
  font-size: 1.12rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.stat { text-align: center; }

.stat-num {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
}

/* ─── Signals ─── */
.signals {
  padding: 100px 24px;
  background: var(--bg-elevated);
}

.signals-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.signals h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  text-align: center;
}

.signals-sub {
  text-align: center;
  color: var(--fg-muted);
  margin-bottom: 56px;
  font-size: 1.05rem;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 768px) {
  .signal-grid { grid-template-columns: 1fr; }
}

.signal-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.signal-card:hover {
  border-color: rgba(59, 130, 246, 0.25);
  box-shadow: 0 0 24px var(--accent-glow);
}

.signal-icon {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-glow);
  margin-bottom: 18px;
}

.signal-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.signal-card p {
  font-size: 0.92rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* ─── How Section ─── */
.how {
  padding: 100px 24px;
  background: var(--bg);
}

.how-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.how h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
  text-align: center;
}

.how-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 640px) {
  .how-comparison { grid-template-columns: 1fr; }
}

.how-old, .how-new {
  padding: 36px 32px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.how-old {
  background: var(--bg-elevated);
}

.how-new {
  background: linear-gradient(145deg, rgba(59,130,246,0.08), rgba(139,92,246,0.06));
  border-color: rgba(59,130,246,0.2);
}

.how-label {
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
  color: var(--fg-muted);
}

.how-new .how-label {
  color: var(--accent);
}

.how-old ul, .how-new ul {
  list-style: none;
}

.how-old li, .how-new li {
  padding: 8px 0;
  font-size: 0.95rem;
  color: var(--fg-muted);
  border-bottom: 1px solid var(--border);
}

.how-old li:last-child, .how-new li:last-child {
  border-bottom: none;
}

.how-new li {
  color: var(--fg);
}

.how-old li::before {
  content: '\2013 ';
  color: var(--fg-muted);
  margin-right: 8px;
}

.how-new li::before {
  content: '\2713 ';
  color: var(--accent);
  margin-right: 8px;
  font-weight: 700;
}

/* ─── Closing ─── */
.closing {
  padding: 120px 24px;
  text-align: center;
  background:
    radial-gradient(ellipse 50% 40% at 50% 100%, rgba(139,92,246,0.1) 0%, transparent 70%),
    var(--bg-elevated);
}

.closing-inner {
  max-width: 680px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 20px;
}

.closing p {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.75;
}

/* ─── Footer ─── */
.site-footer {
  padding: 32px 24px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.footer-brand {
  font-weight: 600;
  color: var(--fg);
}

.footer-sep {
  opacity: 0.4;
}