:root {
  --bg: #faf8f5;
  --bg-dark: #0d1b2a;
  --fg: #0d1b2a;
  --fg-light: #6b7280;
  --accent: #f0b429;
  --accent-dark: #c8920d;
  --card-bg: #ffffff;
  --card-border: rgba(13, 27, 42, 0.08);
  --font-heading: 'DM Sans', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
}

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

html { scroll-behavior: smooth; }

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

/* NAV */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 248, 245, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--card-border);
}
.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 18px 32px;
}
.nav-logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.3px;
  color: var(--fg);
}

/* HERO */
.hero {
  max-width: 1120px;
  margin: 0 auto;
  padding: 96px 32px 80px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin-bottom: 28px;
}
.eyebrow-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
}
.hero-headline {
  font-family: var(--font-heading);
  font-size: clamp(48px, 7vw, 80px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -3px;
  color: var(--fg);
  margin-bottom: 28px;
  max-width: 680px;
}
.hero-sub {
  font-size: 18px;
  color: var(--fg-light);
  max-width: 520px;
  line-height: 1.65;
  margin-bottom: 40px;
}
.hero-cta-row {
  display: flex;
  gap: 16px;
  align-items: center;
}
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: var(--fg);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  padding: 13px 28px;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.2s, transform 0.15s;
}
.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
}

/* SECTION SHARED */
.section-label {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-heading);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  letter-spacing: -1.5px;
  color: var(--fg);
  line-height: 1.15;
  margin-bottom: 16px;
}

/* TOPICS */
.topics {
  max-width: 1120px;
  margin: 0 auto;
  padding: 80px 32px;
}
.topics .section-title {
  max-width: 480px;
  margin-bottom: 56px;
}
.topics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.topic-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px 28px 32px;
  transition: box-shadow 0.2s, transform 0.2s;
}
.topic-card:hover {
  box-shadow: 0 8px 32px rgba(13,27,42,0.08);
  transform: translateY(-2px);
}
.topic-icon {
  width: 48px;
  height: 48px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--fg);
  margin-bottom: 20px;
}
.topic-card h3 {
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.3px;
  color: var(--fg);
  margin-bottom: 10px;
}
.topic-card p {
  font-size: 14px;
  color: var(--fg-light);
  line-height: 1.65;
}

/* HOW */
.how {
  background: var(--bg-dark);
  padding: 96px 32px;
}
.how-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.how .section-label { color: var(--accent); }
.how .section-title { color: #fff; }
.how-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
  margin-top: 20px;
}
.chat-window {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.chat-bubble {
  font-size: 14px;
  line-height: 1.6;
  padding: 12px 16px;
  border-radius: 10px;
}
.bot {
  background: rgba(240,180,41,0.15);
  color: #fff;
  border-bottom-left-radius: 4px;
}
.user {
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.85);
  border-bottom-right-radius: 4px;
  align-self: flex-end;
  max-width: 85%;
}

/* TRUST */
.trust {
  padding: 80px 32px;
  max-width: 1120px;
  margin: 0 auto;
}
.trust-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}
.trust-item {
  text-align: center;
  padding: 0 64px;
}
.trust-number {
  font-family: var(--font-heading);
  font-size: 56px;
  font-weight: 700;
  letter-spacing: -3px;
  color: var(--fg);
  line-height: 1;
  margin-bottom: 8px;
}
.trust-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--fg-light);
  letter-spacing: 0.03em;
}
.trust-divider {
  width: 1px;
  height: 60px;
  background: var(--card-border);
}

/* MANIFESTO */
.manifesto {
  background: #fff;
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
  padding: 96px 32px;
}
.manifesto-inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}
.manifesto-quote {
  font-family: var(--font-heading);
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 500;
  letter-spacing: -0.5px;
  line-height: 1.4;
  color: var(--fg);
  margin-bottom: 28px;
}
.manifesto-body {
  font-size: 15px;
  color: var(--fg-light);
  line-height: 1.75;
  margin-bottom: 48px;
}
.manifesto-rule {
  width: 48px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  margin: 0 auto;
}

/* FOOTER */
.footer {
  padding: 56px 32px;
  max-width: 1120px;
  margin: 0 auto;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}
.footer-logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 20px;
  color: var(--fg);
  display: block;
  margin-bottom: 8px;
}
.footer-tagline {
  font-size: 13px;
  color: var(--fg-light);
}
.footer-disclaimer {
  font-size: 12px;
  color: var(--fg-light);
  max-width: 320px;
  text-align: right;
  line-height: 1.5;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .topics-grid { grid-template-columns: repeat(2, 1fr); }
  .how-inner { grid-template-columns: 1fr; gap: 48px; }
  .trust-grid { flex-direction: column; gap: 40px; }
  .trust-divider { width: 60px; height: 1px; }
  .footer-inner { flex-direction: column; gap: 24px; align-items: flex-start; }
  .footer-disclaimer { text-align: left; max-width: 100%; }
}
@media (max-width: 600px) {
  .hero { padding: 64px 20px 56px; }
  .topics { padding: 56px 20px; }
  .topics-grid { grid-template-columns: 1fr; }
  .trust { padding: 56px 20px; }
  .manifesto { padding: 64px 20px; }
  .footer { padding: 40px 20px; }
  .trust-item { padding: 0 32px; }
}