:root {
  --color-text: #000;
  --color-secondary: #8E8E93;
  --color-tertiary: #AEAEB2;
  --color-card-bg: #F2F2F5;
  --color-card-selected: #EDEDF5;
  --brand-start: #3366F2;
  --brand-end: #8C33E6;
  --brand-gradient: linear-gradient(135deg, var(--brand-start), var(--brand-end));
  --radius-card: 20px;
  --radius-button: 14px;
  --max-width: 1080px;
  --content-width: 720px;
  --font-stack: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-stack);
  color: var(--color-text);
  background: #fff;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand-start); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 32px;
  max-width: var(--max-width);
  margin: 0 auto;
}
.brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
}
.brand:hover { text-decoration: none; }
.site-nav a {
  margin-left: 24px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-secondary);
}

/* Hero */
.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 64px 32px 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.hero-text h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}
.hero-text h1 .accent {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-text p {
  font-size: 19px;
  color: var(--color-secondary);
  margin: 0 0 32px;
  max-width: 480px;
}
.hero-image {
  display: flex;
  justify-content: center;
}
.hero-image img {
  width: 100%;
  max-width: 360px;
  height: auto;
  border-radius: 36px;
  box-shadow: 0 30px 80px -20px rgba(51, 102, 242, 0.35);
}

/* Buttons */
.button-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.button-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  border-radius: var(--radius-button);
  background: var(--brand-gradient);
  color: #fff;
  font-size: 17px;
  font-weight: 600;
  border: none;
  cursor: pointer;
}
.button-primary:hover { text-decoration: none; opacity: 0.92; }
.button-primary[disabled] { opacity: 0.6; cursor: not-allowed; }
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  border-radius: var(--radius-button);
  background: var(--color-card-bg);
  color: var(--color-text);
  font-size: 17px;
  font-weight: 600;
}
.button-secondary:hover { text-decoration: none; background: var(--color-card-selected); }

/* Sections */
section.block {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 64px 32px;
}
section.block h2 {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  text-align: center;
}
section.block > p.lede {
  font-size: 18px;
  color: var(--color-secondary);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 48px;
}

/* Feature grid */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature {
  background: var(--color-card-bg);
  border-radius: var(--radius-card);
  padding: 28px;
}
.feature h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 0 0 8px;
}
.feature p {
  font-size: 15px;
  color: var(--color-secondary);
  margin: 0;
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  counter-reset: step;
}
.step {
  background: #fff;
  border: 1px solid var(--color-card-bg);
  border-radius: var(--radius-card);
  padding: 28px;
  counter-increment: step;
}
.step::before {
  content: counter(step);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--brand-gradient);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 14px;
}
.step h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 6px;
}
.step p {
  font-size: 15px;
  color: var(--color-secondary);
  margin: 0;
}

/* Languages */
.languages {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.language-chip {
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--color-card-bg);
  font-size: 15px;
  font-weight: 600;
}

/* Privacy callout */
.privacy-callout {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 40px;
  border-radius: var(--radius-card);
  background: var(--color-card-bg);
  text-align: center;
}
.privacy-callout h2 {
  font-size: 28px;
  font-weight: 800;
  margin: 0 0 12px;
}
.privacy-callout p {
  font-size: 16px;
  color: var(--color-secondary);
  margin: 0 auto;
  max-width: 540px;
}

/* Legal */
article.legal {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 48px 32px 80px;
}
article.legal h1 {
  font-size: 36px;
  font-weight: 800;
  margin: 0 0 24px;
}
article.legal h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 36px 0 12px;
}
article.legal h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 24px 0 8px;
}
article.legal p,
article.legal li {
  font-size: 16px;
  color: var(--color-text);
}
article.legal ul { padding-left: 22px; }
article.legal code {
  background: var(--color-card-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 14px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-card-bg);
  margin-top: 64px;
  padding: 32px;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 14px;
  color: var(--color-secondary);
}
.footer-inner a { color: var(--color-secondary); }

/* Responsive */
@media (max-width: 760px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 40px 24px 32px;
    gap: 32px;
    text-align: center;
  }
  .hero-text h1 { font-size: 40px; }
  .hero-text p { font-size: 17px; margin-left: auto; margin-right: auto; }
  .button-row { justify-content: center; }
  .features, .steps { grid-template-columns: 1fr; }
  section.block { padding: 48px 24px; }
  section.block h2 { font-size: 28px; }
  .site-header { padding: 16px 20px; }
  .privacy-callout { padding: 28px 24px; }
  article.legal { padding: 32px 20px 64px; }
  article.legal h1 { font-size: 28px; }
}