:root {
  --yellow: #fcd116;
  --blue: #003893;
  --red: #ce1126;
  --ink: #14171f;
  --ink-soft: #4b5163;
  --bg: #ffffff;
  --bg-soft: #f5f6fa;
  --card: #ffffff;
  --border: #e4e6ee;
  --radius: 16px;
  --max-width: 1080px;
  --shadow: 0 8px 30px rgba(20, 23, 31, 0.08);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f2f3f7;
    --ink-soft: #b7bccb;
    --bg: #0f1117;
    --bg-soft: #171a23;
    --card: #191d27;
    --border: #262b38;
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

a {
  color: var(--blue);
}

@media (prefers-color-scheme: dark) {
  a {
    color: #7fb0ff;
  }
}

img {
  max-width: 100%;
  display: block;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  background: var(--blue);
  color: #fff;
  padding: 10px 16px;
  border-radius: 8px;
  z-index: 100;
}
.skip-link:focus {
  left: 20px;
  top: 20px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  text-decoration: none;
  color: var(--ink);
  font-size: 1.05rem;
}

.brand-flag {
  font-size: 1.4rem;
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

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

.nav-cta {
  display: none;
}

@media (min-width: 720px) {
  .nav-cta {
    display: inline-flex;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--yellow);
  color: #1a1400;
  padding: 12px 22px;
  font-size: 1rem;
  box-shadow: 0 4px 14px rgba(252, 209, 22, 0.4);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 22px rgba(252, 209, 22, 0.5);
}

.btn-hero {
  padding: 18px 34px;
  font-size: 1.15rem;
}

.btn-outline {
  background: transparent;
  border-color: var(--border);
  color: var(--ink);
  padding: 10px 18px;
}

.btn-outline:hover {
  border-color: var(--ink-soft);
}

/* Hero */
.hero {
  padding: 64px 0 56px;
  background:
    radial-gradient(circle at 15% 20%, color-mix(in srgb, var(--yellow) 18%, transparent), transparent 55%),
    radial-gradient(circle at 85% 10%, color-mix(in srgb, var(--blue) 14%, transparent), transparent 50%);
}

.hero .wrap {
  display: grid;
  gap: 40px;
}

@media (min-width: 900px) {
  .hero .wrap {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
  }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--ink-soft);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.1rem);
  line-height: 1.12;
  margin: 0 0 18px;
  letter-spacing: -0.01em;
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--ink-soft);
  margin: 0 0 28px;
  max-width: 55ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 22px;
}

.hero-note {
  font-size: 0.9rem;
  color: var(--ink-soft);
}

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

.hero-card .chat-line {
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.hero-card .chat-line.user {
  background: var(--bg-soft);
  color: var(--ink);
  margin-left: 20%;
}

.hero-card .chat-line.bot {
  background: color-mix(in srgb, var(--blue) 8%, var(--bg-soft));
  color: var(--ink);
  margin-right: 10%;
}

.hero-card .chat-source {
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin: -6px 0 12px 4px;
}

/* Sections */
section {
  padding: 56px 0;
}

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

.section-head {
  max-width: 62ch;
  margin: 0 0 36px;
}

.section-head h2 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}

.section-head p {
  color: var(--ink-soft);
  margin: 0;
  font-size: 1.05rem;
}

/* Example question chips */
.examples-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.example-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
  font-size: 0.98rem;
}

.example-card::before {
  content: "\201C";
  color: var(--blue);
  font-weight: 700;
  font-size: 1.2rem;
  margin-right: 2px;
}

/* Docs cards */
.docs-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

@media (min-width: 760px) {
  .docs-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.doc-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
}

.doc-card h3 {
  margin: 0 0 6px;
  font-size: 1.2rem;
}

.doc-card .doc-meta {
  color: var(--ink-soft);
  font-size: 0.85rem;
  margin: 0 0 16px;
}

.doc-card ul {
  margin: 0;
  padding-left: 20px;
  color: var(--ink-soft);
}

.doc-card li {
  margin-bottom: 8px;
}

.doc-card li strong {
  color: var(--ink);
}

/* How it works steps */
.steps {
  display: grid;
  gap: 22px;
  grid-template-columns: 1fr;
  counter-reset: step;
}

@media (min-width: 760px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

.step {
  position: relative;
  padding: 26px 20px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.step::before {
  counter-increment: step;
  content: counter(step);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: var(--yellow);
  color: #1a1400;
  font-weight: 700;
  margin-bottom: 14px;
}

.step h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.step p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* Screenshots slider */
.slider {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
}

.slider-track {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 4px 4px 16px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.slider-item {
  flex: 0 0 auto;
  scroll-snap-align: center;
  margin: 0;
  width: 220px;
}

.slider-item img {
  width: 100%;
  height: auto;
  border-radius: 18px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.slider-item figcaption {
  margin-top: 12px;
  font-size: 0.88rem;
  color: var(--ink-soft);
  text-align: center;
}

.slider-arrow {
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--ink);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
}

.slider-arrow:hover {
  border-color: var(--ink-soft);
}

@media (min-width: 700px) {
  .slider-arrow {
    display: inline-flex;
  }
}

/* Apps */
.apps-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 30px;
}

.apps-copy {
  flex: 1 1 280px;
}

.apps-copy h3 {
  margin: 0 0 8px;
  font-size: 1.25rem;
}

.apps-copy p {
  margin: 0;
  color: var(--ink-soft);
}

.store-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  flex: 1 1 260px;
}

.store-badges a {
  display: block;
  border-radius: 8px;
  overflow: hidden;
  line-height: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.store-badges img {
  width: 160px;
  height: 50px;
  object-fit: cover;
}

/* FAQ */
.faq {
  display: grid;
  gap: 14px;
  max-width: 760px;
}

.faq details {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 4px 20px;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  padding: 16px 0;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  float: right;
  font-weight: 700;
  color: var(--ink-soft);
}

.faq details[open] summary::after {
  content: "\2212";
}

.faq p {
  margin: 0 0 18px;
  color: var(--ink-soft);
}

/* Business pitch */
.pitch {
  background: linear-gradient(135deg, var(--blue), #001c4d);
  color: #fff;
  border-radius: var(--radius);
  padding: 40px;
  display: grid;
  gap: 24px;
}

@media (min-width: 800px) {
  .pitch {
    grid-template-columns: 1.3fr 0.9fr;
    align-items: center;
  }
}

.pitch h2 {
  margin: 0 0 12px;
  font-size: 1.6rem;
}

.pitch p {
  margin: 0;
  color: #dbe4f5;
}

.pitch-contact {
  display: grid;
  gap: 10px;
  font-size: 0.95rem;
}

.pitch-contact a {
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}

.pitch-contact a:hover {
  text-decoration: underline;
}

.pitch .btn-primary {
  margin-top: 6px;
}

/* Final CTA */
.final-cta {
  text-align: center;
  padding: 70px 0;
}

.final-cta h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  margin: 0 0 14px;
}

.final-cta p {
  color: var(--ink-soft);
  margin: 0 0 28px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}

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

.site-footer a {
  color: var(--ink-soft);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--ink);
}