:root {
  --bg-primary: #0a0c10;
  --bg-secondary: #12151c;
  --bg-card: #181c26;
  --fg-primary: #e8eaed;
  --fg-secondary: #8b919e;
  --fg-muted: #565c6a;
  --accent: #d4a017;
  --accent-glow: rgba(212, 160, 23, 0.15);
  --accent-dim: #a07a10;
  --danger: #c44b3f;
  --success: #3ea86f;
  --border: #232833;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
}

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

body {
  background: var(--bg-primary);
  color: var(--fg-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 40px 80px;
  overflow: hidden;
}

.hero-inner {
  max-width: 860px;
  position: relative;
  z-index: 2;
}

.hero-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(212, 160, 23, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 160, 23, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 1;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent);
  border: 1px solid rgba(212, 160, 23, 0.3);
  padding: 6px 16px;
  margin-bottom: 32px;
  background: var(--accent-glow);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
}

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

.hero-sub {
  font-size: 1.125rem;
  color: var(--fg-secondary);
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 48px;
}

.hero-stat-row {
  display: flex;
  gap: 48px;
}

.hero-stat {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--fg-muted);
  margin-top: 4px;
}

/* ===== PROBLEM ===== */
.problem {
  padding: 120px 40px;
  background: var(--bg-secondary);
}

.problem-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.problem h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 56px;
  letter-spacing: -0.01em;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 36px;
  transition: border-color 0.2s;
}

.problem-card:hover {
  border-color: var(--accent-dim);
}

.problem-icon {
  font-size: 1.5rem;
  margin-bottom: 16px;
  color: var(--danger);
}

.problem-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.problem-card p {
  font-size: 0.95rem;
  color: var(--fg-secondary);
  line-height: 1.65;
}

/* ===== CAPABILITIES ===== */
.capabilities {
  padding: 120px 40px;
}

.cap-inner {
  max-width: 860px;
  margin: 0 auto;
}

.cap-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 16px;
}

.cap-inner > h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 64px;
  letter-spacing: -0.01em;
}

.cap-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.cap-item {
  display: flex;
  gap: 32px;
  padding: 36px 0;
  border-top: 1px solid var(--border);
}

.cap-item:last-child {
  border-bottom: 1px solid var(--border);
}

.cap-number {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--fg-muted);
  min-width: 40px;
  padding-top: 4px;
}

.cap-content h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.cap-content p {
  font-size: 0.95rem;
  color: var(--fg-secondary);
  line-height: 1.65;
}

/* ===== HOW / COMPARISON ===== */
.how {
  padding: 120px 40px;
  background: var(--bg-secondary);
}

.how-inner {
  max-width: 900px;
  margin: 0 auto;
}

.how h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.how-desc {
  font-size: 1.05rem;
  color: var(--fg-secondary);
  max-width: 640px;
  line-height: 1.7;
  margin-bottom: 56px;
}

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

.how-col {
  padding: 36px;
  border: 1px solid var(--border);
}

.how-col-header {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.how-old .how-col-header {
  color: var(--danger);
}

.how-new .how-col-header {
  color: var(--success);
}

.how-old {
  background: rgba(196, 75, 63, 0.05);
}

.how-new {
  background: var(--accent-glow);
  border-color: rgba(212, 160, 23, 0.3);
}

.how-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.how-col li {
  font-size: 0.95rem;
  color: var(--fg-secondary);
  padding-left: 20px;
  position: relative;
}

.how-old li::before {
  content: '\00D7';
  position: absolute;
  left: 0;
  color: var(--danger);
  font-weight: 700;
}

.how-new li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
}

/* ===== CLOSING ===== */
.closing {
  padding: 140px 40px;
  text-align: center;
}

.closing-inner {
  max-width: 760px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}

.closing-sub {
  font-size: 1.1rem;
  color: var(--fg-secondary);
  line-height: 1.7;
  max-width: 580px;
  margin: 0 auto;
}

/* ===== FOOTER ===== */
.site-footer {
  padding: 48px 40px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg-primary);
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero {
    padding: 80px 24px 60px;
    min-height: auto;
  }

  .hero-stat-row {
    flex-direction: column;
    gap: 24px;
  }

  .problem { padding: 80px 24px; }
  .problem-grid { grid-template-columns: 1fr; }

  .capabilities { padding: 80px 24px; }
  .cap-item { flex-direction: column; gap: 12px; }

  .how { padding: 80px 24px; }
  .how-compare { grid-template-columns: 1fr; }

  .closing { padding: 80px 24px; }

  .site-footer { padding: 32px 24px; }
  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
}