:root {
  --bg: #eef2f9;
  --bg-top: #e8effe;
  --panel: rgba(255, 255, 255, 0.94);
  --panel-soft: rgba(248, 250, 255, 0.97);
  --surface: rgba(37, 99, 235, 0.04);
  --surface-strong: rgba(37, 99, 235, 0.08);
  --border: rgba(148, 163, 184, 0.28);
  --border-strong: rgba(37, 99, 235, 0.4);
  --text: #1e293b;
  --text-soft: #475569;
  --text-faint: #94a3b8;
  --accent: #2563eb;
  --accent-strong: #1d4ed8;
  --shadow: 0 4px 24px rgba(30, 41, 59, 0.07), 0 1px 3px rgba(30, 41, 59, 0.04);
  --shadow-card: 0 2px 12px rgba(30, 41, 59, 0.06);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 999px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(ellipse at top left, rgba(37, 99, 235, 0.1), transparent 36%),
    radial-gradient(ellipse at 88% 12%, rgba(99, 102, 241, 0.07), transparent 28%),
    linear-gradient(180deg, var(--bg-top) 0%, var(--bg) 55%, #dde6f5 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

.page-shell {
  width: min(calc(100% - 2rem), var(--max-width));
  margin: 0 auto;
  padding: 1.2rem 0 2rem;
}

.site-header,
.section-block,
.site-footer {
  border: 1px solid var(--border);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
  padding: 1rem 1.2rem;
  margin-bottom: 1.5rem;
  border-radius: var(--radius-sm);
}

.brand {
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-strong);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--accent);
}

.language-toggle {
  display: inline-flex;
  padding: 0.25rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.04);
}

.lang-button {
  min-width: 92px;
  padding: 0.55rem 0.9rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--text-soft);
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease;
}

.lang-button.is-active {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.14), rgba(37, 99, 235, 0.06));
  color: var(--accent-strong);
  font-weight: 600;
}

.section-block,
.site-footer {
  margin-top: 1.5rem;
  padding: 2.4rem;
  border-radius: var(--radius-lg);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.85fr);
  gap: 1.6rem;
  padding: 3.4rem;
  background:
    linear-gradient(150deg, rgba(37, 99, 235, 0.06), rgba(255, 255, 255, 0.96) 48%),
    var(--panel);
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero-copy h1,
.section-heading h2,
.feature-copy h2,
.final-cta h2 {
  margin: 0;
  line-height: 0.96;
  letter-spacing: -0.045em;
  color: var(--text);
}

.hero-copy h1 {
  max-width: 11ch;
  font-size: clamp(3.2rem, 7vw, 6.4rem);
}

.hero-subtitle {
  max-width: 42rem;
  margin: 1.2rem 0 0;
  color: var(--text);
  font-size: clamp(1.2rem, 2.2vw, 1.58rem);
  line-height: 1.36;
  font-weight: 500;
}

.hero-text,
.section-copy p,
.feature-copy p,
.info-card p,
.signal-card p,
.site-footer p,
.final-cta p {
  color: var(--text-soft);
  line-height: 1.72;
}

.hero-text {
  max-width: 40rem;
  margin: 1.25rem 0 0;
  font-size: 1.05rem;
}

.hero-actions,
.final-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.9rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.1rem;
  padding: 0.9rem 1.4rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 600;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.18);
}

.button-primary {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.28);
}

.button-secondary {
  background: rgba(37, 99, 235, 0.07);
  color: var(--accent);
  border-color: rgba(37, 99, 235, 0.25);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background: rgba(37, 99, 235, 0.12);
}

.hero-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  justify-content: flex-end;
}

.signal-card,
.signal-grid > div,
.info-card,
.feature-aside,
.principle-item,
.service-chip {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.signal-card,
.info-card {
  padding: 1.3rem;
  background: rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow-card);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.info-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(37, 99, 235, 0.1);
  border-color: rgba(37, 99, 235, 0.2);
}

.signal-label,
.signal-grid span,
.stack-list span {
  display: block;
  margin-bottom: 0.42rem;
  color: var(--text-faint);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.signal-card strong,
.signal-grid strong,
.stack-list strong {
  display: block;
  font-size: 1rem;
  color: var(--text);
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.signal-grid > div,
.stack-list > div {
  padding: 1rem;
  background: rgba(255, 255, 255, 0.7);
}

.section-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 1.5rem;
  align-items: start;
}

.section-heading {
  max-width: 44rem;
}

.section-heading h2,
.feature-copy h2,
.final-cta h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.section-copy {
  margin-top: 1.25rem;
}

.single-copy {
  margin-top: 0;
}

.card-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.7rem;
}

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

.info-card h3 {
  margin: 0;
  font-size: 1.08rem;
  color: var(--text);
}

.feature-block {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 1.5rem;
  align-items: start;
}

.feature-aside {
  padding: 1rem;
  background: linear-gradient(180deg, rgba(37, 99, 235, 0.05), rgba(37, 99, 235, 0.02));
  box-shadow: var(--shadow-card);
}

.stack-list {
  display: grid;
  gap: 0.85rem;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.85rem;
  margin-top: 1.5rem;
}

.service-chip {
  padding: 1rem 1.05rem;
  color: var(--accent-strong);
  line-height: 1.45;
  background: rgba(37, 99, 235, 0.05);
  border-color: rgba(37, 99, 235, 0.15);
  font-size: 0.9rem;
  font-weight: 500;
  transition: background 160ms ease, border-color 160ms ease;
}

.service-chip:hover {
  background: rgba(37, 99, 235, 0.09);
  border-color: rgba(37, 99, 235, 0.28);
}

.principle-item {
  padding: 1rem 1.05rem;
  color: var(--text);
  line-height: 1.45;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.75);
  box-shadow: var(--shadow-card);
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.85rem;
  margin-top: 1.5rem;
}

.final-cta {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) auto;
  gap: 1.2rem;
  align-items: end;
  background:
    linear-gradient(145deg, rgba(37, 99, 235, 0.07), rgba(255, 255, 255, 0.96) 55%),
    var(--panel);
}

.final-cta p {
  max-width: 46rem;
  margin-bottom: 0;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-footer p {
  margin: 0.35rem 0 0;
}

.site-footer strong {
  color: var(--accent-strong);
  letter-spacing: 0.04em;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.2rem;
  color: var(--text-soft);
}

@media (max-width: 1040px) {
  .hero,
  .feature-block,
  .section-layout,
  .final-cta,
  .card-grid-3,
  .services-grid,
  .principles-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy h1 {
    max-width: 14ch;
  }
}

@media (max-width: 760px) {
  .page-shell {
    width: min(calc(100% - 1rem), var(--max-width));
  }

  .site-header,
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
    border-radius: 24px;
  }

  .header-controls {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
  }

  .site-nav {
    gap: 0.8rem 1rem;
  }

  .language-toggle {
    align-self: flex-start;
  }

  .section-block,
  .site-footer {
    padding: 1.5rem;
  }

  .hero {
    padding: 1.7rem;
  }

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