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

:root {
  /* developer.android.com inspired palette */
  --bg: #1b1b1f;
  --bg-raised: #222226;
  --bg-surface: #2b2b2f;
  --bg-input: #313135;
  --border: #38383c;
  --border-light: #48484c;
  --text: #c4c7c5;
  --text-dim: #8e918f;
  --text-bright: #e3e3e0;
  --accent: #a8dab5;
  --accent-hover: #c4eecf;
  --accent-dark: #6bb47a;
  --accent-dim: rgba(168, 218, 181, 0.1);
  --accent-on: #072711;
  --green: #a8dab5;
  --green-dim: rgba(168, 218, 181, 0.08);
  --red: #f2b8b5;
  --red-dim: rgba(242, 184, 181, 0.06);
  --teal: #89d5c4;
  --blue: #8ab4f8;
  --purple: #c9a7fa;
  --orange: #e8b86d;
  --keyword: #c9a7fa;
  --string: #a8dab5;
  --number: #89d5c4;
  --comment: #636567;
  --func: #8ab4f8;
  --radius: 12px;
  --max-width: 1120px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Roboto', 'Google Sans', -apple-system, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

code, pre, .api-example-code, .api-example-code pre {
  font-family: 'Roboto Mono', 'Noto Sans Mono', Consolas, monospace;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; height: auto; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Nav */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  background: rgba(27, 27, 31, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}
.nav .container {
  display: flex; align-items: center; justify-content: space-between; height: 56px;
}
.nav-logo {
  font-size: 1.2rem; font-weight: 500; color: var(--text-bright); letter-spacing: 0.02em;
}
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; }
.nav-links a {
  color: var(--text-dim); font-size: 0.85rem; font-weight: 400; transition: color 0.15s;
}
.nav-links a:hover { color: var(--text-bright); }
.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 4px; }
.hamburger span {
  display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; transition: 0.3s;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 24px; border-radius: 20px;
  font-family: inherit; font-size: 0.85rem; font-weight: 500;
  cursor: pointer; border: none; transition: all 0.15s; text-decoration: none;
  letter-spacing: 0.02em;
}
.btn-primary {
  background: var(--accent); color: var(--accent-on);
}
.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 1px 8px rgba(168, 218, 181, 0.2);
}
.btn-outline {
  background: transparent; color: var(--accent);
  border: 1px solid var(--accent);
}
.btn-outline:hover { background: var(--accent-dim); }
.btn-large { padding: 12px 32px; font-size: 0.9rem; }
.btn-disabled {
  background: var(--bg-input); color: var(--text-dim);
  cursor: not-allowed; pointer-events: none;
  border: 1px solid var(--border);
}

/* Hero */
.hero {
  position: relative; text-align: center;
  overflow: visible;
  background: var(--bg);
}
/* Background video */
.hero-video-bg {
  position: relative; z-index: 0;
  margin-top: -70px;
}
.hero-video-bg video {
  width: 100%;
  display: block;
  border-radius: 0;
}
.hero-video-bg-overlay {
  position: absolute; inset: 0; pointer-events: none;
  background:
    linear-gradient(180deg,
      var(--bg) 0%,
      rgba(27, 27, 31, 0.0) 15%,
      rgba(27, 27, 31, 0.0) 85%,
      var(--bg) 100%
    );
}
.hero-content {
  position: relative; z-index: 1;
  padding: 120px 24px 100px;
}
.hero h1 {
  font-size: 2.8rem; font-weight: 300; letter-spacing: -0.02em;
  line-height: 1.2; margin-bottom: 18px; color: #fff;
  text-shadow: 0 2px 20px rgba(0,0,0,0.4);
}
.hero h1 span { color: var(--accent); font-weight: 400; }
.hero p {
  font-size: 1.05rem; color: rgba(255,255,255,0.7); max-width: 580px; margin: 0 auto 28px;
  font-weight: 300; text-shadow: 0 1px 8px rgba(0,0,0,0.3);
}
/* Hero pillars */
.hero-pillars {
  display: flex; align-items: center; justify-content: center;
  gap: 0; margin-bottom: 28px; flex-wrap: wrap;
}
.hero-pillar {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 20px; font-size: 0.85rem; color: rgba(255,255,255,0.8);
  font-weight: 400;
}
.hero-pillar-icon { font-size: 1.1rem; }
.hero-pillar-sep {
  width: 1px; height: 20px; background: rgba(255,255,255,0.2);
}
.hero-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero .btn-outline {
  color: rgba(255,255,255,0.85); border-color: rgba(255,255,255,0.3);
}
.hero .btn-outline:hover {
  background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.5);
}

/* Fullscreen video modal */
.video-modal {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(16px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s ease;
}
.video-modal.active { opacity: 1; pointer-events: all; }
.video-modal video {
  max-width: 92vw; max-height: 88vh;
  border-radius: 12px;
  box-shadow: 0 16px 64px rgba(0, 0, 0, 0.5);
}
.video-modal-close {
  position: absolute; top: 20px; right: 28px;
  background: none; border: none; color: rgba(255,255,255,0.5);
  font-size: 2rem; cursor: pointer; line-height: 1;
  transition: color 0.15s; z-index: 1001;
}
.video-modal-close:hover { color: #fff; }

.hero-visual-dot {
  width: 10px; height: 10px; border-radius: 50%;
}
.hero-visual-dot.red { background: #f28b82; }
.hero-visual-dot.yellow { background: #fdd663; }
.hero-visual-dot.green { background: #a8dab5; }

/* Section */
.section { padding: 72px 0; }
.section-alt { background: var(--bg-raised); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 {
  font-size: 1.75rem; font-weight: 400; letter-spacing: -0.01em;
  margin-bottom: 10px; color: var(--text-bright);
}
.section-header p { color: var(--text-dim); font-size: 1rem; max-width: 540px; margin: 0 auto; font-weight: 300; }

/* Principles */
.principles-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.principle-card {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px; transition: border-color 0.15s;
}
.principle-card:hover { border-color: var(--border-light); }
.principle-number {
  font-size: 1.5rem; font-weight: 300; color: var(--accent);
  opacity: 0.5; margin-bottom: 12px; line-height: 1;
  font-family: 'Roboto Mono', monospace;
}
.principle-card h3 {
  font-size: 1rem; font-weight: 500; margin-bottom: 10px;
  color: var(--text-bright); line-height: 1.3;
}
.principle-card p { color: var(--text-dim); font-size: 0.85rem; line-height: 1.7; font-weight: 300; }

/* Philosophy */
.philosophy {
  max-width: 640px; margin: 0 auto; text-align: center;
}
.philosophy h2 {
  font-size: 1.75rem; font-weight: 400; color: var(--text-bright);
  margin-bottom: 20px; letter-spacing: -0.01em;
}
.philosophy p {
  color: var(--text-dim); font-size: 0.95rem; font-weight: 300;
  line-height: 1.8; margin-bottom: 16px;
}
.philosophy p:first-of-type {
  color: var(--accent); font-size: 1.1rem; font-weight: 400;
  margin-bottom: 20px;
}

/* Is / Isn't */
.is-isnt-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
  max-width: 800px; margin: 0 auto;
}
.is-card, .isnt-card {
  border-radius: var(--radius); padding: 32px; border: 1px solid var(--border);
}
.is-card {
  background: var(--green-dim);
  border-color: rgba(168, 218, 181, 0.15);
}
.isnt-card {
  background: var(--red-dim);
  border-color: rgba(242, 184, 181, 0.1);
}
.is-card h3 { color: var(--green); font-size: 1rem; font-weight: 500; margin-bottom: 16px; }
.isnt-card h3 { color: var(--red); font-size: 1rem; font-weight: 500; margin-bottom: 16px; }
.is-card ul, .isnt-card ul { list-style: none; }
.is-card li, .isnt-card li {
  padding: 5px 0; font-size: 0.85rem; color: var(--text);
}
.is-card li::before { content: "\2713"; color: var(--green); font-weight: 700; margin-right: 10px; }
.isnt-card li::before { content: "\2717"; color: var(--red); font-weight: 700; margin-right: 10px; }

/* Comparison table */
.comparison-table {
  max-width: 760px; margin: 0 auto; overflow-x: auto;
}
.comparison-table table {
  width: 100%; border-collapse: collapse;
  font-size: 0.88rem;
}
.comparison-table th {
  padding: 12px 16px; text-align: left;
  font-weight: 500; color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  font-size: 0.82rem; text-transform: uppercase;
  letter-spacing: 0.05em;
}
.comparison-table th.highlight {
  color: var(--accent); font-weight: 500;
}
.comparison-table td {
  padding: 10px 16px; border-bottom: 1px solid var(--border);
  color: var(--text);
}
.comparison-table td:first-child {
  color: var(--text-bright); font-weight: 400;
}
.comparison-table td.no {
  color: var(--red); opacity: 0.9;
}
.comparison-table td.yes {
  color: var(--green);
}
.comparison-table tbody tr:hover {
  background: var(--bg-surface);
}

/* Pricing note */
.pricing-note {
  text-align: center; color: var(--text-dim); font-size: 0.82rem;
  margin-top: 24px; max-width: 540px; margin-left: auto; margin-right: auto;
  font-weight: 300;
}

/* How it works */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.step { text-align: center; }
.step-number {
  width: 40px; height: 40px; background: var(--accent); color: var(--accent-on);
  border-radius: 50%; display: inline-flex; align-items: center;
  justify-content: center; font-size: 1.1rem; font-weight: 500; margin-bottom: 14px;
}
.step h3 { font-size: 1rem; font-weight: 500; margin-bottom: 6px; color: var(--text-bright); }
.step p { color: var(--text-dim); font-size: 0.88rem; font-weight: 300; }

/* API Example */
.api-example { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; }
.api-example-text h3 { font-size: 1.2rem; font-weight: 400; margin-bottom: 10px; color: var(--text-bright); }
.api-example-text p { color: var(--text-dim); margin-bottom: 14px; font-size: 0.9rem; font-weight: 300; }
.api-example-text ul { color: var(--text-dim); font-size: 0.88rem; padding-left: 18px; margin-bottom: 14px; font-weight: 300; }
.api-example-code {
  background: #161618; color: #c9d1d9; padding: 0;
  border-radius: var(--radius); font-size: 0.82rem; line-height: 1.8; overflow-x: auto;
  border: 1px solid var(--border);
}
.api-example-code-titlebar {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-bottom: 1px solid var(--border);
  font-size: 0.72rem; color: var(--text-dim);
}
.api-example-code pre {
  padding: 16px 20px; margin: 0;
}
.api-example-code .comment { color: var(--comment); }
.api-example-code .keyword { color: var(--keyword); }
.api-example-code .string { color: var(--string); }
.api-example-code .number { color: var(--number); }
.api-example-code .func { color: var(--func); }

/* Pricing */
.pricing-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 20px; max-width: 900px; margin: 0 auto;
}
.pricing-card {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px 24px; text-align: center;
  position: relative; transition: border-color 0.15s;
  opacity: 0.55;
}
.pricing-card.featured {
  border-color: var(--border);
  opacity: 0.55;
}
.pricing-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--bg-input); color: var(--text-dim); padding: 3px 14px;
  border-radius: 16px; font-size: 0.72rem; font-weight: 500;
  border: 1px solid var(--border);
}
.pricing-card h3 { font-size: 1rem; font-weight: 500; margin-bottom: 6px; color: var(--text-bright); }
.pricing-price { font-size: 2.2rem; font-weight: 300; margin-bottom: 2px; color: var(--text-bright); }
.pricing-price span { font-size: 0.85rem; font-weight: 300; color: var(--text-dim); }
.pricing-desc { color: var(--text-dim); font-size: 0.82rem; margin-bottom: 20px; font-weight: 300; }
.pricing-features { list-style: none; text-align: left; margin-bottom: 24px; }
.pricing-features li { padding: 5px 0; font-size: 0.85rem; color: var(--text); }
.pricing-features li::before { content: "\2713"; color: var(--green); font-weight: 700; margin-right: 8px; }
.pricing-card .btn { width: 100%; }

/* Coming soon banner */
.coming-soon-banner {
  text-align: center; margin-bottom: 28px;
  padding: 14px 24px; background: var(--accent-dim);
  border: 1px solid rgba(168, 218, 181, 0.12);
  border-radius: 8px; max-width: 480px; margin-left: auto; margin-right: auto;
}
.coming-soon-banner p {
  color: var(--accent); font-size: 0.9rem; font-weight: 500;
}
.coming-soon-banner span {
  color: var(--text-dim); font-size: 0.82rem; font-weight: 300;
}

/* FAQ */
.faq-list { max-width: 680px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-question {
  width: 100%; background: none; border: none; padding: 18px 0;
  font-family: inherit; font-size: 0.92rem; font-weight: 500;
  text-align: left; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
  color: var(--text-bright); transition: color 0.15s;
}
.faq-question:hover { color: var(--accent); }
.faq-question::after {
  content: "+"; font-size: 1.2rem; font-weight: 300;
  color: var(--text-dim); transition: transform 0.2s;
}
.faq-item.open .faq-question::after { content: "\2212"; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-answer p { padding: 0 0 18px; color: var(--text-dim); font-size: 0.88rem; font-weight: 300; }

/* CTA */
.cta {
  padding: 72px 0; text-align: center;
  background: linear-gradient(180deg, var(--bg) 0%, #1a2f1e 100%);
}
.cta h2 { font-size: 1.75rem; font-weight: 400; margin-bottom: 10px; color: var(--text-bright); }
.cta p { color: var(--text-dim); font-size: 1rem; margin-bottom: 24px; font-weight: 300; }

/* Footer */
.footer { padding: 32px 0; border-top: 1px solid var(--border); }
.footer .container { display: flex; justify-content: space-between; align-items: center; }
.footer-text { color: var(--text-dim); font-size: 0.78rem; font-weight: 300; }
.footer-links { display: flex; gap: 20px; list-style: none; }
.footer-links a { color: var(--text-dim); font-size: 0.78rem; font-weight: 300; }
.footer-links a:hover { color: var(--text-bright); }

/* Responsive */
@media (max-width: 768px) {
  .hero-content { padding: 100px 24px 60px; }
  .hero-video-bg { margin-top: -180px; }
  .hero h1 { font-size: 1.8rem; }
  .hero p { font-size: 0.95rem; }
  .principles-grid, .steps, .pricing-grid, .is-isnt-grid { grid-template-columns: 1fr; }
  .hero-pillar-sep { display: none; }
  .api-example { grid-template-columns: 1fr; }
  .nav-links {
    display: none; position: absolute; top: 56px; left: 0; right: 0;
    background: var(--bg); flex-direction: column; padding: 20px; gap: 14px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 16px rgba(0,0,0,0.3);
  }
  .nav-links.open { display: flex; }
  .hamburger { display: block; }
  .footer .container { flex-direction: column; gap: 14px; text-align: center; }
}

/* Demo grid — video showcase */
.demo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 48px;
}
.demo-figure {
  margin: 0;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
}
.demo-figure video {
  display: block;
  width: 100%;
  height: auto;
  background: #000;
}
.demo-figure figcaption {
  padding: 16px 20px;
  font-size: 14px;
  color: var(--text-muted, #9aa0a6);
  line-height: 1.5;
}
.demo-figure figcaption strong {
  color: var(--text, #e8eaed);
  font-size: 15px;
}
.demo-figure figcaption code {
  background: rgba(255,255,255,0.08);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}
@media (max-width: 860px) {
  .demo-grid { grid-template-columns: 1fr; gap: 20px; }
}