:root {
  --bg: #0D0D0F;
  --surface: #141418;
  --surface-2: #1c1c22;
  --border: #2a2a33;
  --fg: #F4F4F5;
  --fg-muted: #8B8B96;
  --accent: #F59E0B;
  --accent-dim: rgba(245,158,11,0.12);
  --green: #22C55E;
  --amber: #F59E0B;
  --red: #EF4444;
  --blue: #3B82F6;
  --radius: 8px;
  --radius-lg: 14px;
}

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

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

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

h1, h2, h3, h4 {
  font-family: 'Syne', system-ui, sans-serif;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

/* ── NAV ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,13,15,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--fg);
  letter-spacing: -0.03em;
}
.nav-tag {
  font-size: 0.78rem;
  color: var(--fg-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ── HERO ── */
.hero {
  position: relative;
  padding: 96px 24px 80px;
  overflow: hidden;
}
.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(245,158,11,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245,158,11,0.035) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 40%, transparent 100%);
}
.hero-kicker {
  position: relative;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 20px;
}
.hero-headline {
  position: relative;
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 800;
  color: var(--fg);
  max-width: 680px;
  margin-bottom: 24px;
}
.hero-sub {
  position: relative;
  font-size: 1.1rem;
  color: var(--fg-muted);
  max-width: 560px;
  margin-bottom: 56px;
  line-height: 1.7;
}
.hero-stats {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 28px;
  width: fit-content;
}
.hero-stat {
  padding: 0 32px;
}
.hero-stat:first-child { padding-left: 0; }
.hero-stat:last-child { padding-right: 0; }
.hero-stat-value {
  font-family: 'Syne', sans-serif;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--fg);
  letter-spacing: -0.03em;
}
.hero-stat-label {
  font-size: 0.75rem;
  color: var(--fg-muted);
  margin-top: 2px;
}
.hero-stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
}

/* ── CONCIERGE ── */
.concierge {
  padding: 96px 24px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.concierge-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 16px;
}
.concierge-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 20px;
}
.concierge-desc {
  font-size: 1rem;
  color: var(--fg-muted);
  max-width: 560px;
  margin-bottom: 48px;
  line-height: 1.75;
}
.concierge-triggers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  max-width: 820px;
  margin-bottom: 36px;
}
.trigger-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.trigger-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-top: 5px;
  flex-shrink: 0;
}
.trigger-dot--green { background: var(--green); box-shadow: 0 0 6px var(--green); }
.trigger-dot--amber { background: var(--amber); box-shadow: 0 0 6px var(--amber); }
.trigger-dot--red { background: var(--red); box-shadow: 0 0 6px var(--red); }
.trigger-dot--blue { background: var(--blue); box-shadow: 0 0 6px var(--blue); }
.trigger-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}
.trigger-time {
  font-size: 0.7rem;
  color: var(--fg-muted);
  font-variant-numeric: tabular-nums;
}
.trigger-action {
  font-size: 0.82rem;
  color: var(--fg);
  line-height: 1.4;
}
.trigger-badge {
  font-size: 0.68rem;
  padding: 2px 8px;
  border-radius: 99px;
  width: fit-content;
  font-weight: 600;
  letter-spacing: 0.03em;
}
.trigger-badge--nudge { background: rgba(34,197,94,0.15); color: var(--green); }
.trigger-badge--reinforce { background: rgba(245,158,11,0.15); color: var(--amber); }
.trigger-badge--intervene { background: rgba(239,68,68,0.15); color: var(--red); }
.trigger-badge--guided { background: rgba(59,130,246,0.15); color: var(--blue); }
.concierge-channels {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.channel-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 99px;
  font-size: 0.78rem;
  color: var(--fg-muted);
}

/* ── HOW IT WORKS ── */
.howitworks {
  padding: 96px 24px;
}
.how-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 16px;
}
.how-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-bottom: 12px;
}
.how-desc {
  font-size: 1rem;
  color: var(--fg-muted);
  margin-bottom: 56px;
}
.steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  max-width: 820px;
}
.step {
  flex: 1;
}
.step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.step-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.step-body {
  font-size: 0.88rem;
  color: var(--fg-muted);
  line-height: 1.6;
}
.step-connector {
  width: 64px;
  height: 1px;
  background: var(--border);
  margin: 20px 20px 0;
  flex-shrink: 0;
}

/* ── TIERS ── */
.tiers {
  padding: 96px 24px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.tiers-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 16px;
}
.tiers-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-bottom: 12px;
}
.tiers-sub {
  font-size: 1rem;
  color: var(--fg-muted);
  max-width: 580px;
  margin-bottom: 48px;
  line-height: 1.7;
}
.tier-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 820px;
  margin-bottom: 28px;
}
.tier {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
}
.tier--featured {
  border-color: var(--accent);
}
.tier-badge {
  position: absolute;
  top: -12px;
  left: 24px;
  background: var(--accent);
  color: var(--bg);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 99px;
  letter-spacing: 0.03em;
}
.tier-name {
  font-family: 'Syne', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.tier-price {
  font-family: 'Syne', sans-serif;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--fg);
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}
.tier-price-unit {
  font-size: 0.78rem;
  color: var(--fg-muted);
  font-weight: 400;
  letter-spacing: 0;
}
.tier-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.tier-feature {
  font-size: 0.82rem;
  color: var(--fg-muted);
  padding-left: 20px;
  position: relative;
  line-height: 1.4;
}
.tier-feature::before {
  content: '';
  position: absolute;
  left: 0;
  top: 7px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.tier-feature--on::before { background: var(--green); opacity: 0.7; }
.tier-feature--off::before { background: var(--border); }
.tiers-note {
  font-size: 0.82rem;
  color: var(--fg-muted);
  max-width: 580px;
  line-height: 1.6;
}

/* ── BACKOFFICE ── */
.backoffice {
  padding: 96px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
}
.backoffice-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 16px;
}
.backoffice-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-bottom: 16px;
}
.backoffice-desc {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.75;
  margin-bottom: 32px;
}
.backoffice-metrics {
  display: flex;
  gap: 32px;
}
.bo-metric-val {
  font-family: 'Syne', sans-serif;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--fg);
  letter-spacing: -0.03em;
}
.bo-metric-label {
  font-size: 0.72rem;
  color: var(--fg-muted);
  margin-top: 2px;
}
.backoffice-preview {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.preview-header {
  background: var(--surface-2);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid var(--border);
}
.preview-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
}
.preview-title {
  font-size: 0.78rem;
  color: var(--fg-muted);
  margin-left: 6px;
}
.preview-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.preview-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.preview-row:last-child { border-bottom: none; }
.preview-key {
  font-size: 0.8rem;
  color: var(--fg-muted);
}
.preview-val {
  font-size: 0.8rem;
  color: var(--fg);
  font-weight: 500;
}
.preview-val--on { color: var(--green); }

/* ── CLOSING ── */
.closing {
  padding: 96px 24px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.closing-inner { max-width: 600px; margin: 0 auto; }
.closing-headline {
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  margin-bottom: 16px;
  color: var(--fg);
}
.closing-sub {
  font-size: 1rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* ── FOOTER ── */
.footer {
  padding: 48px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1rem;
  color: var(--fg);
}
.footer-tag {
  font-size: 0.8rem;
  color: var(--fg-muted);
}
.footer-links { margin-left: auto; }
.footer-link {
  font-size: 0.8rem;
  color: var(--fg-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-link:hover { color: var(--accent); }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .hero { padding: 64px 20px 56px; }
  .hero-stats {
    flex-direction: column;
    gap: 16px;
    width: 100%;
    align-items: flex-start;
  }
  .hero-stat-divider { display: none; }
  .hero-stat { padding: 0; }
  .concierge-triggers { grid-template-columns: 1fr; }
  .steps { flex-direction: column; gap: 32px; }
  .step-connector { display: none; }
  .tier-grid { grid-template-columns: 1fr; }
  .backoffice { grid-template-columns: 1fr; gap: 40px; }
  .backoffice-metrics { gap: 20px; }
  .footer { flex-direction: column; align-items: flex-start; }
  .footer-links { margin-left: 0; }
}

@media (max-width: 480px) {
  .hero-headline { font-size: 2.2rem; }
  .concierge { padding: 64px 20px; }
  .howitworks { padding: 64px 20px; }
  .tiers { padding: 64px 20px; }
  .backoffice { padding: 64px 20px; }
  .closing { padding: 64px 20px; }
}