:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --text: #172033;
  --muted: #5d6b82;
  --line: #dfe7f2;
  --primary: #1357d8;
  --primary-dark: #0d3f9d;
  --accent: #13a6a6;
  --shadow: 0 24px 80px rgba(23, 32, 51, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 0%, rgba(19, 87, 216, 0.16), transparent 34rem),
    radial-gradient(circle at 80% 10%, rgba(19, 166, 166, 0.14), transparent 28rem),
    var(--bg);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(246, 248, 251, 0.78);
  border-bottom: 1px solid rgba(223, 231, 242, 0.8);
}

.nav {
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: white;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  font-weight: 800;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-top: 2px;
}

.nav-links {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-weight: 600;
}

.lang-switch {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--primary);
  border-radius: 999px;
  padding: 10px 14px;
  font-weight: 800;
  cursor: pointer;
}

.hero {
  max-width: 1180px;
  margin: 0 auto;
  padding: 86px 24px 56px;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(320px, 0.55fr);
  gap: 36px;
  align-items: center;
}

.hero-content h1 {
  margin: 12px 0 18px;
  max-width: 820px;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 0.98;
  letter-spacing: -0.06em;
}

.hero-lead {
  max-width: 760px;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.7;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 12px;
  font-weight: 900;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 14px;
  font-weight: 800;
}

.button.primary {
  color: white;
  background: var(--primary);
  box-shadow: 0 14px 32px rgba(19, 87, 216, 0.24);
}

.button.primary:hover {
  background: var(--primary-dark);
}

.button.secondary {
  color: var(--primary);
  background: var(--surface);
  border: 1px solid var(--line);
}

.notice {
  max-width: 820px;
  margin-top: 28px;
  padding: 18px 20px;
  border: 1px solid rgba(19, 166, 166, 0.24);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
}

.notice strong {
  color: var(--text);
}

.hero-card {
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(223, 231, 242, 0.9);
  border-radius: 30px;
  padding: 30px;
  box-shadow: var(--shadow);
}

.card-icon {
  width: 64px;
  height: 64px;
  border-radius: 22px;
  display: grid;
  place-items: center;
  background: rgba(19, 87, 216, 0.1);
  color: var(--primary);
  font-size: 34px;
}

.hero-card h2 {
  margin: 24px 0 18px;
  font-size: 28px;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.hero-card ul {
  padding: 0;
  margin: 0;
  list-style: none;
}

.hero-card li {
  padding: 14px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-weight: 700;
}

.section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 70px 24px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 32px;
}

.section h2 {
  margin: 10px 0 12px;
  font-size: clamp(32px, 4vw, 50px);
  line-height: 1.05;
  letter-spacing: -0.045em;
}

.section p {
  color: var(--muted);
  line-height: 1.75;
}

.grid.three {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature,
.post-card,
.process,
.contact {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 14px 50px rgba(23, 32, 51, 0.06);
}

.feature {
  padding: 26px;
}

.feature h3,
.post-card h3 {
  margin-top: 0;
  font-size: 22px;
  letter-spacing: -0.02em;
}

.split {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 26px;
  align-items: start;
}

.process {
  padding: 12px;
}

.process div {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 14px;
  align-items: center;
  padding: 16px;
  border-radius: 18px;
}

.process div + div {
  border-top: 1px solid var(--line);
}

.process span {
  width: 38px;
  height: 38px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: white;
  background: var(--primary);
  font-weight: 900;
}

.process p {
  margin: 0;
  font-weight: 700;
}

.posts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.post-card {
  padding: 24px;
}

.post-date {
  color: var(--accent);
  font-size: 13px;
  font-weight: 900;
}

.read-more {
  color: var(--primary);
  font-weight: 900;
}

.contact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 34px;
}

.footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 34px 24px 54px;
  color: var(--muted);
}

@media (max-width: 880px) {
  .nav {
    align-items: flex-start;
  }

  .nav-links {
    display: none;
  }

  .hero,
  .split,
  .grid.three,
  .posts {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 54px;
  }

  .contact {
    align-items: flex-start;
    flex-direction: column;
  }
}