/* ── Variables ────────────────────────────────── */
:root {
  --bg: #0F172A;
  --surface: #1E293B;
  --surface-2: #334155;
  --amber: #F59E0B;
  --amber-dim: #D97706;
  --text: #F1F5F9;
  --text-muted: #94A3B8;
  --border: #334155;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', system-ui, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Typography ───────────────────────────────── */
h1, h2, h3 {
  font-family: 'DM Serif Display', Georgia, serif;
  font-weight: 400;
  line-height: 1.15;
}

.eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
  display: block;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: var(--text);
  margin-bottom: 3rem;
}

/* ── Navbar ───────────────────────────────────── */
.navbar {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border);
}

.navbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: 'DM Serif Display', serif;
  font-size: 1.4rem;
  color: var(--text);
  letter-spacing: -0.01em;
}

.nav-tagline {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* ── Hero ─────────────────────────────────────── */
.hero {
  padding: 5rem 2rem 4rem;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-bottom: 4rem;
}

.hero-headline {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  color: var(--text);
  margin-bottom: 1.5rem;
}

.hero-headline em {
  color: var(--amber);
  font-style: italic;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 480px;
}

/* Hero card */
.hero-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  position: relative;
}

.card-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 0.75rem;
}

.card-title {
  font-family: 'DM Serif Display', serif;
  font-size: 1.3rem;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.card-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.card-stat {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.card-stat:last-child { margin-bottom: 0; }

.card-stat-value {
  font-family: 'DM Serif Display', serif;
  font-size: 1.8rem;
  color: var(--amber);
}

.card-stat-unit {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Hero stats */
.hero-stats {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-value {
  font-family: 'DM Serif Display', serif;
  font-size: 1.8rem;
  color: var(--amber);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
  flex-shrink: 0;
}

/* ── Problem ─────────────────────────────────── */
.problem {
  padding: 5rem 2rem;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.problem-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.problem-header {
  margin-bottom: 3rem;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.problem-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2rem;
}

.problem-icon {
  width: 44px;
  height: 44px;
  background: rgba(245, 158, 11, 0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--amber);
  margin-bottom: 1.25rem;
}

.problem-card h3 {
  font-family: 'DM Serif Display', serif;
  font-size: 1.15rem;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.problem-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ── How ──────────────────────────────────────── */
.how {
  padding: 5rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.how-steps {
  display: flex;
  align-items: center;
  gap: 0;
}

.step {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2rem;
}

.step-number {
  font-family: 'DM Serif Display', serif;
  font-size: 2.5rem;
  color: var(--amber);
  opacity: 0.4;
  margin-bottom: 0.75rem;
}

.step-content h3 {
  font-family: 'DM Serif Display', serif;
  font-size: 1.1rem;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.step-content p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.step-arrow {
  padding: 0 1.5rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

/* ── Sectors ──────────────────────────────────── */
.sectors {
  padding: 5rem 2rem;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.sectors-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.sector-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.5rem;
}

.sector-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.75rem 1.5rem;
}

.sector-icon {
  color: var(--amber);
  margin-bottom: 1rem;
}

.sector-name {
  font-family: 'DM Serif Display', serif;
  font-size: 1.05rem;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.sector-price {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--amber);
  margin-bottom: 0.75rem;
}

.sector-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ── Pricing ─────────────────────────────────── */
.pricing {
  padding: 5rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.pricing-model {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.5rem;
  position: relative;
}

.pricing-model.featured {
  border-color: var(--amber);
}

.model-badge {
  position: absolute;
  top: -12px;
  left: 2rem;
  background: var(--amber);
  color: var(--bg);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
}

.model-name {
  font-family: 'DM Serif Display', serif;
  font-size: 1.3rem;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.model-rate {
  font-family: 'DM Serif Display', serif;
  font-size: 2.5rem;
  color: var(--amber);
  margin-bottom: 1.5rem;
}

.model-rate span {
  font-size: 1rem;
  color: var(--text-muted);
  font-family: 'DM Sans', sans-serif;
}

.model-features {
  list-style: none;
  margin-bottom: 2rem;
}

.model-features li {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.model-features li::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--amber);
  border-radius: 50%;
  flex-shrink: 0;
}

.model-math {
  font-size: 0.85rem;
  color: var(--text-muted);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  font-family: monospace;
}

/* ── Closing ──────────────────────────────────── */
.closing {
  padding: 7rem 2rem;
  text-align: center;
}

.closing-inner {
  max-width: 700px;
  margin: 0 auto;
}

.closing-headline {
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--text);
  margin-bottom: 1.5rem;
}

.closing-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.closing-tagline {
  font-family: 'DM Serif Display', serif;
  font-size: 1.3rem;
  color: var(--amber);
  font-style: italic;
}

/* ── Footer ───────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 2rem;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo {
  font-family: 'DM Serif Display', serif;
  font-size: 1.1rem;
  color: var(--text);
}

.footer-tagline {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── Responsive ──────────────────────────────── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .problem-grid { grid-template-columns: 1fr; }
  .sector-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; }
  .how-steps { flex-direction: column; }
  .step-arrow { transform: rotate(90deg); }
  .hero-stats { flex-wrap: wrap; }
  .hero-stats .stat-item { min-width: 120px; }
}

@media (max-width: 480px) {
  .sector-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 0.5rem; text-align: center; }
  .hero { padding: 3rem 1.25rem 2.5rem; }
}