:root {
  --bg:      oklch(97% 0.006 80);
  --surface: oklch(100% 0 0);
  --fg:      oklch(18% 0.02 75);
  --muted:   oklch(46% 0.015 75);
  --border:  oklch(91% 0.008 80);
  --accent:  oklch(68% 0.18 75);
  --accent-dim: oklch(58% 0.18 75);

  --font-display: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-body:    -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'IBM Plex Mono', ui-monospace, Menlo, monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body.amber-homepage {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

h1 { font-family: var(--font-display); font-size: clamp(36px, 5vw, 56px); font-weight: 600; line-height: 1.15; letter-spacing: -0.025em; }
h2 { font-family: var(--font-display); font-size: clamp(28px, 3.6vw, 40px); font-weight: 600; line-height: 1.2; letter-spacing: -0.015em; }
h3 { font-family: var(--font-display); font-size: clamp(20px, 2.2vw, 24px); font-weight: 510; line-height: 1.3; letter-spacing: -0.01em; }
.body-large { font-size: 18px; line-height: 1.6; }
.body-small { font-size: 14px; line-height: 1.5; letter-spacing: 0.01em; }
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s;
}
nav.scrolled { box-shadow: 0 1px 12px rgba(0,0,0,0.06); }
nav .container {
  display: flex; align-items: center;
  height: 64px;
}
.nav-logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.02em;
  display: flex; align-items: center; gap: 8px;
}
.nav-logo span { color: var(--accent); }
.nav-links {
  display: flex; align-items: center; gap: 28px;
  margin-left: auto;
  list-style: none;
}
.nav-links a {
  font-size: 14px;
  font-weight: 510;
  letter-spacing: 0.02em;
  color: var(--muted);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--fg); }
.nav-cta {
  display: inline-flex; align-items: center;
  padding: 8px 20px;
  background: var(--accent);
  color: #fff !important;
  border-radius: 8px;
  font-weight: 510;
  font-size: 14px;
  letter-spacing: 0.02em;
  transition: background 0.2s, transform 0.2s;
}
.nav-cta:hover { background: var(--accent-dim); transform: translateY(-1px); }
.mobile-toggle {
  display: none; margin-left: auto;
  background: none; border: 0;
  width: 36px; height: 36px;
  align-items: center; justify-content: center;
  cursor: pointer; color: var(--fg);
  border-radius: 8px;
}
.mobile-toggle:hover { background: var(--border); }

.hero {
  padding: 160px 0 100px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -30%; left: -20%;
  width: 70%; height: 120%;
  background: radial-gradient(ellipse at 30% 40%, oklch(78% 0.12 75 / 0.25), transparent 70%);
  pointer-events: none;
}
.hero .container { position: relative; }
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero h1 { margin-bottom: 20px; }
.hero h1 .accent-word { color: var(--accent); }
.hero p { color: var(--muted); margin-bottom: 36px; max-width: 56ch; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px;
  border-radius: 10px;
  font-family: var(--font-body);
  font-size: 15px; font-weight: 510;
  letter-spacing: 0.02em;
  border: 0; cursor: pointer;
  transition: all 0.2s;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-dim); transform: translateY(-2px); box-shadow: 0 8px 24px oklch(68% 0.18 75 / 0.3); }
.btn-secondary {
  background: var(--surface);
  color: var(--fg);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

.code-block {
  background: oklch(16% 0.015 75);
  border-radius: 14px;
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
  box-shadow: 0 20px 60px rgba(0,0,0,0.12);
  position: relative;
}
.code-block .bar {
  display: flex; gap: 8px; margin-bottom: 20px;
}
.code-block .bar span {
  width: 12px; height: 12px;
  border-radius: 50%;
}
.code-block .bar .r { background: #ff5f57; }
.code-block .bar .y { background: #ffbd2e; }
.code-block .bar .g { background: #28c840; }
.code-block pre { margin: 0; color: oklch(78% 0.01 75); white-space: pre-wrap; }
.code-block .kw { color: oklch(75% 0.15 75); }
.code-block .fn { color: oklch(80% 0.08 220); }
.code-block .str { color: oklch(78% 0.12 145); }
.code-block .num { color: oklch(70% 0.14 75); }
.code-block .cm { color: oklch(40% 0.02 75); font-style: italic; }

section { padding: 100px 0; }
.section-label {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}
section h2 { margin-bottom: 16px; }
.section-desc { color: var(--muted); margin-bottom: 56px; max-width: 60ch; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px;
  transition: transform 0.3s, box-shadow 0.3s;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.06);
  border-color: oklch(68% 0.18 75 / 0.3);
}
.feature-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: oklch(68% 0.18 75 / 0.1);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; font-weight: 600;
  margin-bottom: 20px;
}
.feature-card h3 { margin-bottom: 10px; }
.feature-card p { font-size: 15px; color: var(--muted); line-height: 1.6; }

.code-showcase {
  background: oklch(100% 0 0);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.showcase-content .tag-list {
  display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px;
}
.tag {
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 13px; font-weight: 510;
  font-family: var(--font-mono);
  background: oklch(68% 0.18 75 / 0.1);
  color: var(--accent);
  border: 1px solid oklch(68% 0.18 75 / 0.15);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-num {
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 56px);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--accent);
  margin-bottom: 6px;
}
.stat-label { font-size: 15px; color: var(--muted); }

.cta-section {
  background: var(--fg);
  color: #fff;
  text-align: center;
}
.cta-section h2 { color: #fff; }
.cta-section .section-desc { color: oklch(70% 0.01 75); }
.cta-section .btn-primary {
  background: var(--accent);
  color: var(--fg);
  font-weight: 600;
}

.scroll-progress {
  position: fixed; top: 0; left: 0; right: 0;
  height: 3px; z-index: 200;
  background: transparent;
}
.scroll-progress-bar {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, oklch(68% 0.18 75), oklch(72% 0.16 60));
  transition: width 0.1s linear;
}

.hero-trust {
  display: flex; align-items: center; gap: 12px;
  margin-top: 28px;
}
.trust-avatars {
  display: flex;
}
.trust-avatars span {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 600; color: #fff;
  margin-left: -8px;
  border: 2px solid var(--bg);
}
.trust-avatars span:first-child { margin-left: 0; }
.trust-text {
  font-size: 14px; color: var(--muted);
}
.trust-text strong { color: var(--fg); }

.code-block .filename {
  font-family: var(--font-mono);
  font-size: 12px;
  color: oklch(55% 0.02 75);
  margin-left: auto;
  letter-spacing: 0.02em;
}

.integrations-section {
  background: oklch(100% 0 0);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.integrations-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.integration-item {
  display: flex; align-items: center; justify-content: center;
  padding: 20px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  font-family: var(--font-mono);
  font-size: 14px; font-weight: 510;
  color: var(--muted);
  transition: border-color 0.3s, color 0.3s, transform 0.3s;
}
.integration-item:hover {
  border-color: oklch(68% 0.18 75 / 0.4);
  color: var(--accent);
  transform: translateY(-2px);
}

.testimonials-section {
  background: var(--bg);
}
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px;
  transition: transform 0.3s, box-shadow 0.3s;
}
.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.06);
}
.testimonial-stars {
  color: oklch(78% 0.15 85);
  font-size: 16px;
  margin-bottom: 16px;
  letter-spacing: 2px;
}
.testimonial-text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--fg);
  margin-bottom: 24px;
}
.testimonial-author {
  display: flex; align-items: center; gap: 12px;
}
.author-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 600; color: #fff;
  flex-shrink: 0;
}
.author-name {
  font-size: 14px; font-weight: 510; color: var(--fg);
}
.author-role {
  font-size: 13px; color: var(--muted);
}

.faq-section {
  background: oklch(100% 0 0);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.faq-list {
  max-width: 720px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:first-child {
  border-top: 1px solid var(--border);
}
.faq-question {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 0;
  background: none; border: 0;
  font-family: var(--font-body);
  font-size: 16px; font-weight: 510;
  color: var(--fg);
  cursor: pointer;
  text-align: left;
}
.faq-question:hover { color: var(--accent); }
.faq-icon {
  flex-shrink: 0;
  transition: transform 0.3s ease;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding-bottom: 20px;
}
.faq-answer p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

.amber-footer {
  padding: 64px 0 32px;
  border-top: 1px solid var(--border);
  font-size: 14px;
  color: var(--muted);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 20px; font-weight: 600;
  margin-bottom: 12px;
  color: var(--fg);
}
.footer-logo span { color: var(--accent); }
.footer-brand p {
  font-size: 14px; line-height: 1.6; color: var(--muted);
  max-width: 280px;
}
.footer-col h4 {
  font-size: 14px; font-weight: 600;
  color: var(--fg);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}
.footer-col ul {
  list-style: none;
  display: flex; flex-direction: column; gap: 10px;
}
.footer-col a {
  font-size: 14px; color: var(--muted);
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 13px;
  color: oklch(55% 0.02 75);
}

.fade-up {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-in {
  opacity: 0; transition: opacity 0.7s ease;
}
.fade-in.visible { opacity: 1; }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero { padding: 120px 0 64px; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .showcase-grid { grid-template-columns: 1fr; }
  .integrations-grid { grid-template-columns: repeat(4, 1fr); }
  .testimonials-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  .mobile-toggle { display: flex; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: 64px; left: 0; right: 0;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px; gap: 16px;
  }
  .features-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; gap: 32px; }
  .integrations-grid { grid-template-columns: repeat(3, 1fr); }
  .testimonials-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  footer .container { flex-direction: column; text-align: center; }
  h1 { font-size: 32px; }
}

@media (prefers-reduced-motion: reduce) {
  .fade-up, .fade-in { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}