:root {
  --bg: #0b1020;
  --bg-alt: #121a31;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-strong: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.12);
  --text: #f3f7ff;
  --text-soft: #b5c1d8;
  --accent: #7aa2ff;
  --accent-strong: #9dc0ff;
  --max-width: 1180px;
  --radius: 18px;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(122, 162, 255, 0.18), transparent 28%),
    radial-gradient(circle at top right, rgba(110, 135, 255, 0.12), transparent 24%),
    linear-gradient(180deg, #0a0f1e 0%, #0d1428 100%);
  color: var(--text);
  line-height: 1.65;
}

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

button {
  font: inherit;
}

.container {
  width: min(100% - 40px, var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(7, 11, 22, 0.78);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.site-nav a {
  color: var(--text-soft);
  font-size: 0.96rem;
  transition: color 0.2s ease;
}

.site-nav a:hover {
  color: var(--text);
}

.site-nav .nav-cta {
  color: var(--text);
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.lang-button {
  appearance: none;
  -webkit-appearance: none;
  border: none;
  outline: none;
  min-width: 46px;
  height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  background: transparent;
  color: var(--text-soft);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition:
    background 0.2s ease,
    color 0.2s ease,
    transform 0.15s ease,
    box-shadow 0.2s ease;
}

.lang-button:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.lang-button.is-active {
  background: linear-gradient(135deg, var(--accent), #5f86f5);
  color: #09101f;
  box-shadow: 0 8px 18px rgba(95, 134, 245, 0.28);
}

.hero {
  padding: 76px 0 60px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent-strong);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  max-width: 13ch;
  font-size: clamp(2.1rem, 5vw, 4.4rem);
  line-height: 0.98;
  letter-spacing: -0.035em;
}

.hero-text {
  margin: 20px 0 0;
  max-width: 840px;
  font-size: 1.02rem;
  color: var(--text-soft);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.15s ease, opacity 0.15s ease, border-color 0.15s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: linear-gradient(135deg, var(--accent), #5f86f5);
  color: #09101f;
  box-shadow: var(--shadow);
}

.button-secondary {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.hero-note {
  margin-top: 16px;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.section {
  padding: 82px 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.025);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

h2 {
  margin: 0 0 24px;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h3 {
  margin: 0 0 14px;
  font-size: 1.1rem;
  line-height: 1.25;
}

p {
  margin: 0 0 18px;
  max-width: 840px;
  color: var(--text-soft);
}

.steps-grid,
.pillars-grid,
.surfaces-grid,
.audience-grid {
  display: grid;
  gap: 20px;
  margin-top: 30px;
}

.steps-grid,
.audience-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

.card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.02));
  box-shadow: var(--shadow);
}

.card p:last-child {
  margin-bottom: 0;
}

.final-cta {
  padding-top: 96px;
  padding-bottom: 100px;
}

.final-cta .button {
  margin-top: 10px;
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(7, 11, 22, 0.7);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0 34px;
}

.footer-brand {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.footer-text {
  margin: 0;
  max-width: 620px;
  font-size: 0.96rem;
  color: var(--text-soft);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-end;
}

.footer-links a {
  color: var(--text-soft);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--text);
}

@media (max-width: 1280px) {
  h1 {
    max-width: 12.5ch;
    font-size: clamp(2.05rem, 4.6vw, 4rem);
  }
}

@media (max-width: 1100px) {
  .steps-grid,
  .audience-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pillars-grid,
  .surfaces-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  h1 {
    max-width: 12ch;
    font-size: clamp(2rem, 5vw, 3.5rem);
  }

  .hero-text {
    max-width: 760px;
  }

  .footer-inner {
    flex-direction: column;
  }

  .footer-links {
    align-items: flex-start;
  }
}

@media (max-width: 760px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 16px 0;
  }

  .header-right {
    width: 100%;
    display: flex;
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 12px 16px;
  }

  .hero {
    padding: 58px 0 48px;
  }

  .section {
    padding: 68px 0;
  }

  .steps-grid,
  .pillars-grid,
  .surfaces-grid,
  .audience-grid {
    grid-template-columns: 1fr;
  }

  h1 {
    max-width: 100%;
    font-size: clamp(1.9rem, 8.2vw, 3rem);
    line-height: 1.03;
  }

  .hero-text {
    font-size: 1rem;
  }

  .hero-actions {
    margin-top: 20px;
  }

  .footer-inner {
    padding: 24px 0 30px;
  }
}