:root {
  --bg: #0a0e17;
  --bg-elevated: #111827;
  --fg: #e8eaf0;
  --fg-muted: #8b92a8;
  --accent: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.15);
  --accent-warm: #f59e0b;
  --surface: #1e293b;
  --border: #1e293b;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --radius: 16px;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
}

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 24px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 32px;
  background: var(--bg-elevated);
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  margin-bottom: 24px;
  letter-spacing: -1.5px;
}

.hero h1 .accent {
  color: var(--accent);
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

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

.problem-inner {
  max-width: 960px;
  margin: 0 auto;
  text-align: center;
}

.problem h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  margin-bottom: 56px;
  letter-spacing: -0.5px;
}

.problem h2 em {
  color: var(--accent-warm);
  font-style: italic;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 32px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
}

.stat-num {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--fg-muted);
}

/* ── Features ── */
.features {
  padding: 100px 24px;
}

.features-inner {
  max-width: 960px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.feature-block {
  padding: 40px 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  transition: border-color 0.2s;
}

.feature-block:hover {
  border-color: var(--accent);
}

.feature-wide {
  grid-column: 1 / -1;
}

.feature-icon {
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.feature-block h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.feature-block p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

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

.how-inner {
  max-width: 960px;
  margin: 0 auto;
  text-align: center;
}

.how h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  margin-bottom: 16px;
}

.how-sub {
  color: var(--fg-muted);
  max-width: 600px;
  margin: 0 auto 48px;
  font-size: 1.05rem;
}

.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  text-align: left;
}

.compare-col {
  padding: 32px;
  border-radius: var(--radius);
}

.compare-col.old {
  background: var(--bg);
  border: 1px solid var(--border);
}

.compare-col.new {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.08), rgba(56, 189, 248, 0.02));
  border: 1px solid var(--accent);
}

.compare-col h4 {
  font-size: 1rem;
  margin-bottom: 20px;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}

.compare-col.new h4 {
  color: var(--accent);
}

.compare-col ul {
  list-style: none;
}

.compare-col ul li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
  color: var(--fg-muted);
}

.compare-col.new ul li {
  color: var(--fg);
}

.compare-col ul li:last-child {
  border-bottom: none;
}

/* ── Closing ── */
.closing {
  padding: 120px 24px;
  text-align: center;
}

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

.closing h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  margin-bottom: 24px;
}

.closing p {
  color: var(--fg-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 24px;
}

.closing-vision {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--fg);
  font-style: italic;
  margin-top: 40px;
}

/* ── Footer ── */
.site-footer {
  padding: 40px 24px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
}

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

/* ── Mobile ── */
@media (max-width: 768px) {
  .stat-row {
    grid-template-columns: 1fr;
  }

  .features-inner {
    grid-template-columns: 1fr;
  }

  .feature-wide {
    grid-column: auto;
  }

  .compare {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 70vh;
    padding: 60px 20px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }
}