:root {
  --bg: #FAFAF7;
  --fg: #1A1A18;
  --muted: #767670;
  --accent: #1D6B52;
  --accent-light: #E8F4EE;
  --surface: #FFFFFF;
  --border: #E5E5E0;
  --error: #D93B3B;
  --chat-bg: #F5F5F0;
  --chat-agent: #1D6B52;
  --chat-agent-bg: #E8F4EE;
  --chat-confirm: #0F5132;
  --chat-confirm-bg: #D1E7DD;
}

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

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

h1, h2, h3, h4 {
  font-family: 'Syne', system-ui, sans-serif;
  line-height: 1.15;
  font-weight: 700;
}

/* Nav */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(250, 250, 247, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
}
.nav-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 18px;
  color: var(--fg);
  letter-spacing: -0.02em;
}

/* Hero */
.hero {
  padding: 140px 32px 100px;
}
.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.hero-headline {
  font-size: 52px;
  font-weight: 800;
  color: var(--fg);
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}
.hero-lede {
  font-size: 18px;
  color: var(--muted);
  line-height: 1.7;
  max-width: 420px;
}

/* Demo */
.booking-demo {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 32px rgba(0,0,0,0.06), 0 1px 4px rgba(0,0,0,0.04);
}
.demo-header {
  background: #2A2A28;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.demo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #555;
}
.demo-dot:first-child { background: #FF5F57; }
.demo-dot:nth-child(2) { background: #FFBD2E; }
.demo-dot:nth-child(3) { background: #28CA41; }
.demo-label {
  font-size: 12px;
  color: #aaa;
  margin-left: 8px;
  font-weight: 500;
}
.demo-thread {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.msg {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-width: 85%;
}
.msg-name {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0 4px;
}
.msg-customer .msg-name { color: var(--muted); }
.msg-agent .msg-name { color: var(--accent); }
.msg-confirm .msg-name { color: var(--chat-confirm); }
.msg-text {
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.5;
}
.msg-customer .msg-text {
  background: #F0F0EB;
  color: var(--fg);
  border-bottom-left-radius: 4px;
}
.msg-agent .msg-text {
  background: var(--chat-agent-bg);
  color: var(--fg);
  border-bottom-left-radius: 4px;
}
.msg-confirm .msg-text {
  background: var(--chat-confirm-bg);
  color: var(--chat-confirm);
  border-bottom-left-radius: 4px;
}
.msg-agent { align-self: flex-end; }
.msg-confirm { align-self: flex-end; }
.demo-status {
  border-top: 1px solid var(--border);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #28CA41;
}
.status-text {
  font-size: 12px;
  color: var(--muted);
}

/* Problem */
.problem {
  background: var(--fg);
  color: white;
  padding: 80px 32px;
}
.problem-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 60px;
  align-items: center;
}
.problem-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.stat-number {
  font-family: 'Syne', sans-serif;
  font-size: 100px;
  font-weight: 800;
  line-height: 1;
  color: #E8F4EE;
}
.stat-unit {
  font-family: 'Syne', sans-serif;
  font-size: 18px;
  font-weight: 600;
  color: #666;
}
.problem-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #666;
  margin-bottom: 16px;
}
.problem-headline {
  font-size: 36px;
  font-weight: 700;
  color: white;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  max-width: 520px;
}
.problem-detail {
  font-size: 16px;
  color: #999;
  line-height: 1.7;
  max-width: 480px;
}

/* Features */
.features {
  padding: 100px 32px;
  background: var(--bg);
}
.features-inner {
  max-width: 1100px;
  margin: 0 auto;
}
.section-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-headline {
  font-size: 40px;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.02em;
  margin-bottom: 60px;
}
.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}
.feature-card {
  background: var(--surface);
  padding: 40px;
}
.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 20px;
}
.feature-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 10px;
}
.feature-desc {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.65;
}

/* Closing */
.closing {
  background: var(--accent-light);
  padding: 100px 32px;
  text-align: center;
}
.closing-inner {
  max-width: 700px;
  margin: 0 auto;
}
.closing-headline {
  font-size: 44px;
  font-weight: 800;
  color: var(--fg);
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}
.closing-sub {
  font-size: 18px;
  color: var(--muted);
  margin-bottom: 48px;
  line-height: 1.7;
}
.closing-proof {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0;
}
.proof-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 0 48px;
}
.proof-stat {
  font-family: 'Syne', sans-serif;
  font-size: 40px;
  font-weight: 800;
  color: var(--accent);
}
.proof-label {
  font-size: 13px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}
.proof-divider {
  width: 1px;
  height: 50px;
  background: var(--border);
}

/* Footer */
.footer {
  background: var(--fg);
  padding: 40px 32px;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}
.footer-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 20px;
  color: white;
}
.footer-tagline {
  font-size: 14px;
  color: #666;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-headline { font-size: 36px; }
  .hero-visual { order: -1; }
  .problem-inner {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  .stat-number { font-size: 72px; }
  .problem-headline { font-size: 28px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { padding: 28px; }
  .closing-headline { font-size: 32px; }
  .proof-item { padding: 0 24px; }
  .proof-stat { font-size: 28px; }
}

@media (max-width: 480px) {
  .hero { padding: 120px 20px 80px; }
  .nav-inner { padding: 14px 20px; }
  .closing-proof { flex-direction: column; gap: 24px; }
  .proof-divider { display: none; }
}