:root {
  color-scheme: dark;
}

html, body {
  min-height: 100%;
}

body {
  background:
    radial-gradient(circle at top, rgba(15, 123, 255, 0.12), transparent 36%),
    linear-gradient(180deg, #1f1f1f 0%, #131313 100%);
}

img, video, canvas, svg {
  display: block;
  max-width: 100%;
}

a {
  text-underline-offset: 0.18em;
}

header {
  width: min(1600px, calc(100% - 1.5rem));
  left: 50%;
  transform: translateX(-50%);
  border-radius: 18px;
  margin-top: 0.75rem;
}

.lang-switch {
  margin-left: 1rem;
}

.hero,
.tariffs,
.calculator,
.automation-services,
.portfolio,
.advantages,
.reviews,
.founder,
.faq,
.contact,
.contact-form-section,
.privacy-policy {
  width: min(1600px, calc(100% - 1.5rem));
  margin: 0 auto;
}

.hero {
  min-height: auto;
  padding-top: 9rem;
  padding-bottom: 5rem;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
}

.hero-content {
  max-width: 42rem;
}

.hero-actions {
  flex-direction: row;
}

.hero-actions .btn,
.hero-actions a {
  min-width: 14rem;
}

.hero-visual {
  max-width: 100%;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.4rem);
  letter-spacing: -0.03em;
}

.section-subtitle {
  max-width: 62rem;
  margin-left: auto;
  margin-right: auto;
}

.contact-form-section {
  padding-top: 6rem;
  padding-bottom: 6rem;
}

.lead-modal-panel {
  width: min(940px, 100%);
  padding: clamp(1rem, 2.5vw, 2rem);
}

.contact-form-shell {
  max-width: 100%;
}

.lead-points {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.contact-form {
  padding: clamp(1.25rem, 2.5vw, 2.5rem);
}

.calc-container,
.contact-form,
.lead-modal-panel,
.panel,
.privacy-policy .contact-form {
  backdrop-filter: blur(10px);
}

.privacy-policy .contact-form {
  border: 1px solid rgba(255, 255, 255, 0.08);
}

footer {
  width: min(1600px, calc(100% - 1.5rem));
  margin: 0 auto;
}

@media (max-width: 992px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 8.5rem;
  }

  .hero-content {
    max-width: none;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn,
  .hero-actions a {
    width: 100%;
    min-width: 0;
  }

  .hero-visual {
    order: -1;
  }
}

@media (max-width: 768px) {
  header {
    width: calc(100% - 1rem);
    padding: 1rem 1rem;
    gap: 0.75rem;
    align-items: flex-start;
  }

  nav {
    display: none;
  }

  .lang-switch {
    margin-left: 0;
    align-self: stretch;
    justify-content: space-between;
  }

  .lang-switch button {
    flex: 1 1 0;
  }

  .hero,
  .tariffs,
  .calculator,
  .automation-services,
  .portfolio,
  .advantages,
  .reviews,
  .founder,
  .faq,
  .contact,
  .contact-form-section,
  .privacy-policy {
    width: calc(100% - 1rem);
  }

  .hero {
    padding-top: 7.75rem;
    gap: 2rem;
  }

  .browser-content {
    height: 260px;
  }

  .lead-points {
    grid-template-columns: 1fr;
  }

  .tariffs-grid,
  .automation-grid,
  .portfolio-grid,
  .adv-grid,
  .reviews-grid {
    grid-template-columns: 1fr;
  }

  .calc-checkboxes {
    grid-template-columns: 1fr;
  }

  .calc-container,
  .contact-form,
  .lead-modal-panel {
    padding: 1.1rem;
    border-radius: 18px;
  }

  .calc-total {
    font-size: 2.4rem;
  }
}