:root {
  --bg: #0f1419;
  --bg-elevated: #171d24;
  --surface: #1e2630;
  --text: #f4f7fb;
  --muted: #9aa8b8;
  --blue: #009dff;
  --blue-soft: rgba(0, 157, 255, 0.14);
  --border: rgba(255, 255, 255, 0.08);
  --radius: 16px;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  --font: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --light-bg: #eef3f8;
  --light-text: #1a2332;
  --light-muted: #4a5568;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(15, 20, 25, 0.82);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  position: relative;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: inherit;
  text-decoration: none;
}

.brand img {
  width: 44px;
  height: 44px;
}

.brand span {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  font: inherit;
  cursor: pointer;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.nav-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.nav-label {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.nav a {
  color: var(--muted);
  font-size: 0.9rem;
  text-decoration: none;
}

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

.header-cta {
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.25rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.15s ease, background 0.15s ease;
  cursor: pointer;
  font: inherit;
}

.btn:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

.btn-primary {
  background: var(--blue);
  color: #041018;
}

.btn-primary:hover {
  background: #33b1ff;
}

.btn-ghost {
  border-color: var(--border);
  color: var(--text);
  background: transparent;
}

.hero {
  padding: 5.5rem 0 4rem;
  background:
    radial-gradient(circle at 20% 20%, rgba(0, 157, 255, 0.18), transparent 42%),
    radial-gradient(circle at 80% 0%, rgba(0, 157, 255, 0.08), transparent 35%),
    linear-gradient(180deg, rgba(0, 157, 255, 0.03), transparent 40%),
    var(--bg);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--blue);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.hero h1,
.page-hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.05;
  margin: 0 0 1rem;
  letter-spacing: -0.03em;
}

.hero p.lead,
.page-hero p.lead {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 38rem;
  margin: 0 0 1.75rem;
}

.hero-actions,
.inline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.inline-actions {
  margin-bottom: 0;
}

.hero-points {
  display: grid;
  gap: 0.75rem;
}

.hero-points div {
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
  color: var(--muted);
  font-size: 0.95rem;
}

.hero-points strong {
  color: var(--text);
}

.hero-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.hero-card img {
  width: min(100%, 320px);
  margin: 0 auto 1.25rem;
  display: block;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.stat {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
}

.stat strong {
  display: block;
  font-size: 1.1rem;
  color: var(--blue);
}

.stat span {
  color: var(--muted);
  font-size: 0.88rem;
}

.section {
  padding: 4.5rem 0;
}

.section-elevated {
  background: var(--bg-elevated);
}

.section-ai {
  background:
    radial-gradient(circle at 90% 20%, rgba(0, 157, 255, 0.12), transparent 40%),
    var(--bg);
}

.section-light {
  background: var(--light-bg);
  color: var(--light-text);
}

.section-light a {
  color: #006bb3;
}

.section-light .callout {
  background: #fff;
  border-color: rgba(26, 35, 50, 0.1);
}

.section-light .callout p {
  color: var(--light-muted);
}

.section-header {
  max-width: 720px;
  margin-bottom: 2.5rem;
}

.section-header h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}

.section-header p {
  color: var(--muted);
  margin: 0;
  font-size: 1.05rem;
}

.section-cta {
  margin: 2rem 0 0;
  text-align: center;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.cards-3 {
  grid-template-columns: repeat(3, 1fr);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem;
  position: relative;
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.card h3 a {
  color: inherit;
  text-decoration: none;
}

.card h3 a:hover {
  color: var(--blue);
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.card-accent {
  background: linear-gradient(180deg, rgba(0, 157, 255, 0.06), var(--surface));
}

.card-featured {
  border-color: rgba(0, 157, 255, 0.35);
  background: linear-gradient(145deg, rgba(0, 157, 255, 0.1), var(--surface));
}

.card-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--blue);
  background: var(--blue-soft);
  padding: 0.25rem 0.5rem;
  border-radius: 999px;
}

.spotlight-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2.5rem;
  align-items: center;
}

.spotlight h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 0 0 1rem;
}

.spotlight p {
  color: var(--muted);
}

.check-list {
  margin: 1.25rem 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.65rem;
  color: var(--muted);
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--blue);
  font-weight: 700;
}

.platform-panel {
  display: grid;
  gap: 0.75rem;
}

.platform-row {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
}

.platform-row strong {
  display: block;
  margin-bottom: 0.25rem;
}

.platform-row span {
  color: var(--muted);
  font-size: 0.92rem;
}

.platform-row-highlight {
  border-color: rgba(0, 157, 255, 0.3);
  background: var(--blue-soft);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.list {
  display: grid;
  gap: 0.85rem;
}

.list-item {
  padding: 1rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
}

.list-item strong {
  display: block;
  margin-bottom: 0.25rem;
}

.list-item span {
  color: var(--muted);
  font-size: 0.94rem;
}

.timeline {
  display: grid;
  gap: 0.85rem;
}

.timeline-item {
  padding: 1rem 1.1rem;
  border-left: 3px solid var(--blue);
  background: var(--bg-elevated);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.timeline-item strong {
  display: block;
  margin-bottom: 0.35rem;
}

.timeline-item span {
  color: var(--muted);
  font-size: 0.94rem;
}

.callout {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px);
  padding: 2rem;
}

.callout h2 {
  margin: 0 0 0.5rem;
}

.callout p {
  margin: 0;
  color: var(--muted);
  max-width: 42rem;
}

.callout-inline {
  align-items: center;
}

.testimonial {
  margin: 0;
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
}

.testimonial p {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  font-style: italic;
}

.testimonial footer {
  color: var(--muted);
  font-size: 0.9rem;
  font-style: normal;
}

.testimonial .muted {
  opacity: 0.8;
}

.faq-list {
  display: grid;
  gap: 0.65rem;
}

.faq-list details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
}

.faq-list p {
  color: var(--muted);
  margin: 0.75rem 0 0;
}

.faq-list-page details {
  padding: 1rem 1.15rem;
}

.contact-panel {
  background: linear-gradient(135deg, rgba(0, 157, 255, 0.16), rgba(0, 157, 255, 0.04));
  border: 1px solid rgba(0, 157, 255, 0.28);
  border-radius: calc(var(--radius) + 4px);
  padding: 2rem;
}

.contact-panel h2 {
  margin: 0 0 0.75rem;
}

.contact-panel p {
  color: var(--muted);
  margin: 0 0 1.25rem;
}

.contact-links {
  display: grid;
  gap: 0.5rem;
  font-size: 1.02rem;
}

.contact-actions {
  margin: 1.25rem 0 0;
}

.page-hero {
  padding: 4.5rem 0 2.5rem;
  background:
    radial-gradient(circle at 15% 30%, rgba(0, 157, 255, 0.14), transparent 45%),
    var(--bg);
}

.page-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.page-grid h2 {
  margin-top: 0;
}

.page-grid p,
.page-grid li {
  color: var(--muted);
}

.page-cta {
  text-align: center;
  padding: 2rem 0 1rem;
}

.page-cta h2 {
  margin: 0 0 0.5rem;
}

.page-cta p {
  color: var(--muted);
  margin: 0 0 1.25rem;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2.5rem;
  align-items: start;
}

.contact-form {
  display: grid;
  gap: 1rem;
}

.contact-form label {
  display: grid;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.92rem;
}

.contact-form input,
.contact-form textarea {
  font: inherit;
  padding: 0.75rem 0.9rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid rgba(0, 157, 255, 0.4);
  outline-offset: 1px;
}

.form-note {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0;
}

.contact-aside {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: grid;
  gap: 0.5rem;
}

.contact-aside h2 {
  margin: 1rem 0 0.25rem;
  font-size: 1rem;
}

.contact-aside h2:first-child {
  margin-top: 0;
}

.contact-aside p {
  color: var(--muted);
  margin: 0;
}

.about-founder {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2rem;
  align-items: center;
}

.prose p,
.prose li {
  color: var(--muted);
}

.prose h2 {
  margin-top: 2rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-grid strong {
  display: block;
  color: var(--text);
  margin-bottom: 0.65rem;
}

.footer-grid a {
  display: block;
  color: var(--muted);
  margin-bottom: 0.35rem;
  text-decoration: none;
}

.footer-grid a:hover {
  color: var(--text);
}

.footer-tagline {
  margin: 0.75rem 0 0;
  max-width: 22rem;
}

.footer-brand {
  text-decoration: none;
  color: inherit;
}

.footer-note {
  display: block;
  margin-top: 0.35rem;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.embed-frame {
  width: 100%;
  min-height: 200px;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
}

.embed-frame iframe {
  display: block;
  width: 100%;
}

.book-fallback {
  margin-top: 1rem;
}

.book-cta-slot {
  min-height: 48px;
}

.contact-primary {
  display: grid;
  gap: 1rem;
}

.book-fallback code {
  font-size: 0.85em;
  background: var(--bg-elevated);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

@media (max-width: 900px) {
  .hero-grid,
  .cards,
  .cards-3,
  .split,
  .spotlight-grid,
  .page-grid,
  .contact-layout,
  .about-founder,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .header-cta {
    display: none;
  }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(15, 20, 25, 0.98);
    border-bottom: 1px solid var(--border);
    padding: 1rem;
  }

  .nav.is-open {
    display: flex;
  }

  .nav-group {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-header .container,
  .header-inner {
    position: relative;
  }
}