:root {
  --paper: #FAF7F2;
  --paper-alt: #F3EDE2;
  --surface: #FFFFFF;
  --ink: #1C2530;
  --ink-soft: #3D4752;
  --muted: #6E6A63;
  --rule: #E4DCCF;
  --evergreen: #1F4D45;
  --evergreen-dark: #173B35;
  --evergreen-tint: #E8F0EC;
  --brass: #A8803F;
  --brass-ink: #86662F;
  --brass-light: #D9C29A;
  --terminal: #141C24;
  --terminal-border: #273442;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-soft: 0 10px 30px rgba(28, 37, 48, 0.06);
  --shadow-card: 0 4px 16px rgba(28, 37, 48, 0.04);
  --font-serif: 'Newsreader', Georgia, serif;
  --font-sans: 'Public Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select {
  font-family: inherit;
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 72px;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--evergreen);
  display: grid;
  place-items: center;
  border: 1px solid rgba(168, 128, 63, 0.45);
  flex-shrink: 0;
}

.brand-title {
  display: block;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.2rem;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.brand-sub {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-soft);
}

.nav-links a:hover {
  color: var(--evergreen);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.16s ease, border-color 0.16s ease, transform 0.12s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--evergreen);
  color: #FFFFFF;
}

.btn-primary:hover {
  background: var(--evergreen-dark);
}

.btn-secondary {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--rule);
}

.btn-secondary:hover {
  border-color: var(--brass);
  background: #FFFDF9;
}

.btn-sm {
  padding: 7px 14px;
  font-size: 0.84rem;
}

/* Badges & Typography */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid var(--brass-light);
  background: rgba(255, 255, 255, 0.78);
  color: var(--brass-ink);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--evergreen);
  box-shadow: 0 0 0 4px var(--evergreen-tint);
}

h1, h2, h3 {
  font-family: var(--font-serif);
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--ink);
}

.section {
  padding: 76px 0;
}

.section-alt {
  background: var(--paper-alt);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.section-header {
  max-width: 720px;
  margin-bottom: 36px;
}

.section-header h2 {
  font-size: clamp(1.9rem, 3vw, 2.55rem);
  line-height: 1.15;
  margin-top: 10px;
}

.section-header p {
  color: var(--ink-soft);
  margin: 12px 0 0;
  font-size: 1.04rem;
}

/* Hero */
.hero {
  padding: 68px 0 56px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.45rem, 4.4vw, 3.6rem);
  line-height: 1.07;
  margin: 16px 0 18px;
}

.hero h1 em {
  font-style: italic;
  color: var(--evergreen);
}

.hero-copy {
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: 600px;
  margin: 0 0 26px;
}

.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.hero-trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  font-size: 0.86rem;
  color: var(--muted);
}

.hero-trust-strip span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-metrics-card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-soft);
}

.metrics-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 18px;
}

.metrics-card-head strong {
  font-size: 0.9rem;
  color: var(--ink);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--evergreen);
  background: var(--evergreen-tint);
  padding: 4px 10px;
  border-radius: 999px;
}

.kpi-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.kpi-tile {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  padding: 14px;
}

.kpi-val {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--evergreen);
}

.kpi-label {
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-top: 2px;
}

.stack-footnote {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
  font-size: 0.82rem;
  color: var(--muted);
}

/* Interactive Demo Console */
.demo-shell {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.scenario-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 16px 20px;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}

.scenario-tab {
  border: 1px solid var(--rule);
  background: var(--surface);
  color: var(--ink-soft);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.scenario-tab:hover {
  border-color: var(--evergreen);
  color: var(--evergreen);
}

.scenario-tab.active {
  background: var(--evergreen);
  border-color: var(--evergreen);
  color: #FFFFFF;
}

.demo-body {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
}

.transcript-pane {
  padding: 24px;
  border-right: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.call-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
}

.control-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.waveform {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  height: 22px;
}

.waveform span {
  width: 3px;
  height: 6px;
  border-radius: 99px;
  background: var(--evergreen);
  opacity: 0.45;
  transition: height 0.2s ease, opacity 0.2s ease;
}

.waveform.playing span {
  opacity: 1;
  animation: wave 0.9s infinite ease-in-out;
}

.waveform.playing span:nth-child(2) { animation-delay: 0.15s; }
.waveform.playing span:nth-child(3) { animation-delay: 0.3s; }
.waveform.playing span:nth-child(4) { animation-delay: 0.45s; }
.waveform.playing span:nth-child(5) { animation-delay: 0.6s; }

@keyframes wave {
  0%, 100% { height: 6px; }
  50% { height: 20px; }
}

.toggle-audio {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--ink-soft);
  cursor: pointer;
}

.transcript-feed {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 300px;
}

.turn-card {
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--rule);
  background: #FFFFFF;
  animation: fadeSlide 0.22s ease;
}

.turn-card.agent {
  background: var(--evergreen-tint);
  border-color: #C7DBD3;
}

.turn-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 4px;
}

.turn-card.agent .turn-meta {
  color: var(--evergreen-dark);
}

.turn-text {
  margin: 0;
  font-size: 0.93rem;
  color: var(--ink);
}

@keyframes fadeSlide {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.payload-pane {
  background: var(--terminal);
  color: #E7EEF5;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.payload-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: #9FB1C4;
  border-bottom: 1px solid var(--terminal-border);
  padding-bottom: 12px;
}

.payload-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(125, 184, 166, 0.16);
  color: #7DB8A6;
}

.json-box {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.55;
  color: #D7E5F3;
  white-space: pre-wrap;
  word-break: break-word;
  flex: 1;
}

.payload-foot {
  font-size: 0.78rem;
  color: #9FB1C4;
  border-top: 1px solid var(--terminal-border);
  padding-top: 12px;
}

/* Feature & Architecture Grids */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

.card-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--evergreen-tint);
  color: var(--evergreen);
  display: grid;
  place-items: center;
  font-weight: 700;
  margin-bottom: 14px;
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.arch-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.arch-list {
  list-style: none;
  padding: 0;
  margin: 14px 0 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.arch-list li {
  display: flex;
  gap: 10px;
  font-size: 0.94rem;
  color: var(--ink-soft);
}

.check-icon {
  color: var(--evergreen);
  font-weight: 700;
  flex-shrink: 0;
}

/* Pricing */
.billing-toggle-wrap {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--rule);
  padding: 5px;
  border-radius: 999px;
  margin-bottom: 28px;
}

.billing-btn {
  border: none;
  background: transparent;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink-soft);
  cursor: pointer;
}

.billing-btn.active {
  background: var(--evergreen);
  color: #FFFFFF;
}

.save-tag {
  font-size: 0.72rem;
  background: #F4E9D4;
  color: var(--brass-ink);
  padding: 2px 7px;
  border-radius: 999px;
  margin-left: 4px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.price-card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-card);
}

.price-card.featured {
  border: 2px solid var(--evergreen);
  position: relative;
}

.popular-pill {
  position: absolute;
  top: -12px;
  right: 22px;
  background: var(--evergreen);
  color: #FFFFFF;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: 999px;
}

.price-amount {
  font-family: var(--font-serif);
  font-size: 2.35rem;
  font-weight: 600;
  color: var(--ink);
  margin: 14px 0 4px;
}

.price-period {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
}

.price-features {
  list-style: none;
  padding: 0;
  margin: 18px 0 24px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  font-size: 0.91rem;
  color: var(--ink-soft);
}

/* Pilot Request Form */
.pilot-panel {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: 34px;
  box-shadow: var(--shadow-soft);
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 32px;
}

.pilot-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field.full {
  grid-column: 1 / -1;
}

.field label {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--ink);
}

.field input,
.field select {
  padding: 10px 12px;
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  background: var(--paper);
  font-size: 0.94rem;
  color: var(--ink);
}

.field input:focus,
.field select:focus {
  outline: 2px solid rgba(31, 77, 69, 0.25);
  border-color: var(--evergreen);
}

.form-success {
  padding: 18px;
  border-radius: var(--radius-md);
  background: var(--evergreen-tint);
  border: 1px solid #B7D4C9;
  color: var(--evergreen-dark);
  font-size: 0.94rem;
}

.form-error {
  grid-column: 1 / -1;
  color: #9F2D2D;
  font-size: 0.86rem;
  margin: 0;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--rule);
  padding: 38px 0;
  font-size: 0.86rem;
  color: var(--muted);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-links a:hover {
  color: var(--evergreen);
  text-decoration: underline;
}

@media (max-width: 960px) {
  .hero-grid,
  .demo-body,
  .arch-grid,
  .pilot-panel,
  .cards-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .transcript-pane {
    border-right: none;
    border-bottom: 1px solid var(--rule);
  }

  .nav-links {
    display: none;
  }
}

@media (max-width: 600px) {
  .pilot-form {
    grid-template-columns: 1fr;
  }

  .header-actions .btn-secondary {
    display: none;
  }
}