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

:root {
  --bg: #F7F4EF;
  --bg-dark: #0A0A0A;
  --fg: #0A0A0A;
  --fg-inv: #F7F4EF;
  --accent: #FF4D00;
  --accent-dim: rgba(255, 77, 0, 0.1);
  --muted: #6B6B6B;
  --border: #E2DDD6;
  --card-bg: #FFFFFF;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--fg);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Navigation */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
  position: sticky;
  top: 0;
  background: rgba(247, 244, 239, 0.9);
  backdrop-filter: blur(12px);
  z-index: 100;
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.03em;
  color: var(--fg);
}

.nav-badge {
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 5px 12px;
  border-radius: 20px;
  letter-spacing: 0.02em;
}

/* Section label */
.section-label {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

/* Hero */
.hero {
  background: var(--bg-dark);
  color: var(--fg-inv);
  padding: 80px 48px 96px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-tag {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}

.hero-headline {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: clamp(40px, 5vw, 68px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
  color: #FFFFFF;
}

.hero-sub {
  font-size: 18px;
  line-height: 1.65;
  color: rgba(247, 244, 239, 0.65);
  max-width: 480px;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 0;
  align-items: flex-start;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-right: 32px;
}

.stat-num {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: 32px;
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1;
}

.stat-label {
  font-size: 12px;
  color: rgba(247, 244, 239, 0.5);
  line-height: 1.4;
  max-width: 120px;
}

.stat-div {
  width: 1px;
  height: 60px;
  background: rgba(247, 244, 239, 0.15);
  align-self: center;
  margin-right: 32px;
}

/* Agent card */
.agent-card {
  background: #141414;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  overflow: hidden;
}

.agent-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  font-size: 12px;
  font-weight: 500;
  color: rgba(247, 244, 239, 0.5);
}

.agent-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22C55E;
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.6);
}

.agent-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.agent-msg {}

.agent-ts {
  font-size: 10px;
  color: rgba(247, 244, 239, 0.35);
  margin-bottom: 6px;
  font-weight: 400;
}

.agent-text {
  font-size: 13px;
  line-height: 1.55;
  color: rgba(247, 244, 239, 0.85);
}

/* Problem section */
.problem {
  padding: 96px 48px;
}

.problem-inner {}

.problem-headline {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: clamp(32px, 4vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  max-width: 600px;
}

.problem-body {
  font-size: 18px;
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 56px;
  line-height: 1.65;
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 720px;
}

.prob-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.prob-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #FEF2F2;
  color: #EF4444;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}

.prob-item p {
  font-size: 14px;
  line-height: 1.5;
  color: var(--fg);
}

/* Agent section */
.agent-section {
  background: #F0ECE6;
  padding: 96px 48px;
}

.agent-inner {}

.agent-headline {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: clamp(32px, 4vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  max-width: 600px;
}

.agent-body {
  font-size: 18px;
  color: var(--muted);
  max-width: 600px;
  margin-bottom: 56px;
  line-height: 1.65;
}

.agent-diagram {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  max-width: 640px;
  margin-bottom: 32px;
}

.agent-source {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 500;
  color: var(--fg);
}

.source-icon {
  color: var(--accent);
}

.agent-arrow {
  color: var(--accent);
  margin-bottom: 20px;
}

.agent-brain {
  background: var(--bg-dark);
  color: var(--fg-inv);
  border-radius: 16px;
  padding: 28px 32px;
  max-width: 640px;
}

.brain-label {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}

.brain-desc {
  font-size: 15px;
  color: rgba(247, 244, 239, 0.65);
  line-height: 1.55;
}

/* Features section */
.features {
  padding: 96px 48px;
}

.features-inner {}

.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  margin-top: 0;
}

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 40px 36px;
  position: relative;
}

.feature-card:nth-child(even) {
  background: #F9F7F3;
}

.feature-num {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  line-height: 1.2;
}

.feature-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}

/* Timing section */
.timing {
  padding: 96px 48px;
  background: var(--bg-dark);
  color: var(--fg-inv);
}

.timing-inner {}

.timing-card {}

.timing-headline {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: clamp(32px, 4vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  max-width: 600px;
  color: #FFFFFF;
}

.timing-body {
  font-size: 18px;
  color: rgba(247, 244, 239, 0.65);
  max-width: 600px;
  margin-bottom: 48px;
  line-height: 1.65;
}

.timing-items {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 560px;
}

.timing-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.timing-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  margin-top: 6px;
}

.timing-item p {
  font-size: 15px;
  color: rgba(247, 244, 239, 0.75);
  line-height: 1.5;
}

/* Closing */
.closing {
  padding: 120px 48px;
  text-align: center;
  background: var(--bg);
}

.closing-inner {}

.closing-badge {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 32px;
  display: inline-block;
}

.closing-headline {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: clamp(36px, 5vw, 72px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
}

.closing-body {
  font-size: 20px;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.65;
}

/* Footer */
.footer {
  padding: 32px 48px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-logo {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.footer-tagline {
  font-size: 12px;
  color: var(--muted);
}

.footer-meta {
  font-size: 12px;
  color: var(--muted);
}

/* Responsive */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 56px 24px 72px;
    gap: 48px;
  }
  .problem { padding: 64px 24px; }
  .agent-section { padding: 64px 24px; }
  .features { padding: 64px 24px; }
  .timing { padding: 64px 24px; }
  .closing { padding: 80px 24px; }
  .navbar { padding: 16px 24px; }
  .footer { padding: 24px; }
  .features-grid { grid-template-columns: 1fr; }
  .problem-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; gap: 20px; }
  .stat-div { display: none; }
  .stat { padding-right: 0; }
}

@media (max-width: 480px) {
  .hero-headline { font-size: 36px; }
  .problem-headline { font-size: 28px; }
  .agent-headline { font-size: 28px; }
  .timing-headline { font-size: 28px; }
  .closing-headline { font-size: 32px; }
  .footer-inner { flex-direction: column; gap: 12px; align-items: flex-start; }
}