/* Общие стили для главной и страницы 404 */
:root {
  --color-background: #ffffff;
  --color-surface: #f6f8fb;
  --color-border: #e3e8ef;
  --color-text: #0f172a;
  --color-text-muted: #5b6b82;
  --color-accent: #1f5eff;
  --color-accent-soft: #e8efff;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
}

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

.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Шапка */
.header {
  border-bottom: 1px solid var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  font-weight: 700;
  font-size: 18px;
}

.navigation {
  display: flex;
  gap: 24px;
  font-size: 15px;
}

.navigation a {
  color: var(--color-text-muted);
}

/* Первый экран */
.hero {
  padding-top: 88px;
  padding-bottom: 72px;
}

.hero__badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 600;
}

.hero__title {
  max-width: 720px;
  margin: 20px 0 16px;
  font-size: 44px;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero__subtitle {
  max-width: 620px;
  margin: 0 0 32px;
  color: var(--color-text-muted);
  font-size: 18px;
}

.code-example {
  max-width: 620px;
  padding: 16px 20px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface);
  font-family: var(--font-mono);
  font-size: 14px;
  overflow-x: auto;
  white-space: nowrap;
}

.code-example__method {
  color: var(--color-accent);
  font-weight: 600;
}

/* Карточки возможностей */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-bottom: 88px;
}

.feature-card {
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
}

.feature-card__title {
  margin: 0 0 8px;
  font-size: 17px;
}

.feature-card__text {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 15px;
}

/* Подвал */
.footer {
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 14px;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 16px;
}

/* Страница 404 */
.not-found {
  padding-top: 120px;
  padding-bottom: 120px;
  text-align: center;
}

.not-found__code {
  margin: 0;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 64px;
  font-weight: 700;
}

.not-found__text {
  margin: 8px 0 24px;
  color: var(--color-text-muted);
}

/* Телефоны */
@media (max-width: 720px) {
  .navigation {
    display: none;
  }

  .hero {
    padding-top: 56px;
    padding-bottom: 48px;
  }

  .hero__title {
    font-size: 32px;
  }

  .features {
    grid-template-columns: 1fr;
  }

  .footer__inner {
    flex-direction: column;
  }
}