:root {
  --brand: #1f4fad;
  --brand-dark: #173a82;
  --brand-soft: #eaf0fb;
  --ink: #1a2233;
  --muted: #5b6678;
  --line: #e3e8f0;
  --bg: #ffffff;
  --bg-alt: #f6f8fc;
  --radius: 12px;
  --maxw: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* Buttons */
.btn {
  display: inline-block; cursor: pointer; border: 1px solid transparent;
  border-radius: 10px; padding: 11px 20px; font-size: 15px; font-weight: 600;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-outline { background: transparent; color: var(--brand); border-color: var(--brand); }
.btn-outline:hover { background: var(--brand-soft); }
.btn-lg { padding: 14px 30px; font-size: 17px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255,255,255,.92); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 24px; height: 66px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 20px; color: var(--ink); }
.logo:hover { text-decoration: none; }
.logo-text strong { color: var(--brand); }
.logo-mark {
  display: grid; place-items: center; width: 34px; height: 34px;
  background: var(--brand); color: #fff; border-radius: 9px;
  font-weight: 800; font-size: 14px; letter-spacing: .5px;
}
.main-nav { margin-left: auto; display: flex; gap: 22px; }
.main-nav a { color: var(--muted); font-weight: 500; }
.main-nav a:hover { color: var(--brand); text-decoration: none; }
.header-cta { white-space: nowrap; }

/* Hero */
.hero {
  background: linear-gradient(160deg, #f3f7ff 0%, #e9f0fc 100%);
  padding: 76px 0 64px;
  text-align: center;
  border-bottom: 1px solid var(--line);
}
.badge {
  display: inline-block; background: #fff; border: 1px solid var(--line);
  color: var(--brand); font-size: 13px; font-weight: 600;
  padding: 5px 14px; border-radius: 999px; margin: 0 0 18px;
}
.hero h1 { font-size: 42px; line-height: 1.15; margin: 0 0 16px; letter-spacing: -.5px; }
.hero-lead { font-size: 19px; color: var(--muted); max-width: 640px; margin: 0 auto 32px; }

.search {
  display: flex; gap: 10px; max-width: 640px; margin: 0 auto;
  background: #fff; padding: 8px; border-radius: 14px;
  box-shadow: 0 10px 30px rgba(31,79,173,.12); border: 1px solid var(--line);
}
.search input {
  flex: 1; border: 0; outline: none; font-size: 16px; padding: 10px 14px;
  background: transparent; color: var(--ink);
}

.hero-stats {
  list-style: none; display: flex; justify-content: center; gap: 48px;
  padding: 0; margin: 40px 0 0; flex-wrap: wrap;
}
.hero-stats .num { display: block; font-size: 30px; font-weight: 800; color: var(--brand); }
.hero-stats .cap { color: var(--muted); font-size: 14px; }

/* Sections */
.section { padding: 64px 0; }
.section-alt { background: var(--bg-alt); }
.section-title { font-size: 28px; margin: 0 0 28px; letter-spacing: -.3px; }

.grid { display: grid; gap: 16px; }
.cards { grid-template-columns: repeat(4, 1fr); }

.card {
  display: flex; flex-direction: column; gap: 4px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; color: var(--ink);
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.card:hover {
  text-decoration: none; transform: translateY(-3px);
  box-shadow: 0 12px 26px rgba(26,34,51,.08); border-color: #c9d6ee;
}
.card-ico { font-size: 26px; }
.card-name { font-weight: 700; font-size: 16px; }
.card-meta { color: var(--muted); font-size: 13px; }

/* Chips */
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 0; }
.chips a {
  display: inline-block; background: #fff; border: 1px solid var(--line);
  padding: 9px 16px; border-radius: 999px; color: var(--ink); font-size: 15px;
}
.chips a:hover { text-decoration: none; border-color: var(--brand); color: var(--brand); }
.chip-more a { background: var(--brand-soft); border-color: transparent; color: var(--brand); font-weight: 600; }

/* About */
.about-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: start; }
.about-grid p { color: var(--muted); }
.about-grid p strong { color: var(--ink); }
.features { list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; }
.features li {
  background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px; display: flex; flex-direction: column; gap: 4px;
}
.features strong { color: var(--ink); }
.features span { color: var(--muted); font-size: 14px; }

/* CTA */
.section-cta { text-align: center; background: linear-gradient(160deg, #1f4fad 0%, #173a82 100%); color: #fff; }
.section-cta .section-title { color: #fff; }
.cta-lead { color: #d6e1f7; font-size: 18px; margin: 0 0 28px; }
.section-cta .btn-primary { background: #fff; color: var(--brand); }
.section-cta .btn-primary:hover { background: #eaf0fb; }
.cta-mail { color: #c3d2ef; margin: 18px 0 0; font-size: 15px; }
.cta-mail a { color: #fff; text-decoration: underline; }

/* Footer */
.site-footer { background: #11192b; color: #aeb9cc; padding: 32px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; }
.footer-note { margin: 0; font-size: 14px; }

/* Responsive */
@media (max-width: 900px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 28px; }
  .main-nav { display: none; }
  .hero h1 { font-size: 34px; }
}
@media (max-width: 520px) {
  .cards { grid-template-columns: 1fr 1fr; }
  .header-cta { display: none; }
  .hero-stats { gap: 28px; }
  .search { flex-direction: column; }
  .search .btn { width: 100%; }
}