/* Opervalo landing */
:root {
  --bg: #ffffff;
  --bg-dark: #0b1220;
  --bg-soft: #f5f7fb;
  --text: #172033;
  --text-soft: #5f6878;
  --line: #dfe4ec;
  --accent: #2557d6;
  --accent-dark: #1e46ad;
  --white: #ffffff;
  --radius: 18px;
  --shadow: 0 18px 60px rgba(15, 23, 42, 0.10);
  --container: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
.container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(223, 228, 236, 0.85);
  backdrop-filter: blur(14px);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  text-decoration: none;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.nav-links { display: flex; align-items: center; gap: 28px; }

.nav-links a,
.footer-links a {
  text-decoration: none;
  color: var(--text-soft);
  font-size: 0.95rem;
}

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

.hero {
  padding: 96px 0 88px;
  background:
    radial-gradient(circle at 85% 10%, rgba(37, 87, 214, 0.08), transparent 32%),
    linear-gradient(180deg, #ffffff 0%, #fbfcff 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 68px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  max-width: 800px;
  margin-bottom: 26px;
  font-size: clamp(3rem, 7vw, 5.4rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

h2 {
  margin-bottom: 20px;
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

h3 { margin-bottom: 12px; font-size: 1.2rem; letter-spacing: -0.02em; }

.hero-text {
  max-width: 690px;
  margin-bottom: 32px;
  color: var(--text-soft);
  font-size: 1.15rem;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 750;
  transition: 160ms ease;
}

.button-primary { background: var(--accent); color: var(--white); }
.button-primary:hover { background: var(--accent-dark); transform: translateY(-1px); }

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

.button-secondary:hover { border-color: #c7cfdb; transform: translateY(-1px); }

.hero-card {
  padding: 34px;
  border-radius: var(--radius);
  background: var(--bg-dark);
  box-shadow: var(--shadow);
  color: var(--white);
}

.card-kicker {
  margin-bottom: 10px;
  color: #9fb8ff;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.hero-card h2 { font-size: 2rem; }
.hero-card > p { color: #b8c1d1; }

.mini-list { margin-top: 30px; border-top: 1px solid rgba(255,255,255,0.14); }

.mini-list > div {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  align-items: center;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255,255,255,0.14);
}

.mini-list span { color: #9fb8ff; font-size: 0.8rem; font-weight: 800; }
.mini-list p { margin: 0; color: #eef2f8; }

.section { padding: 92px 0; }
.section-muted { background: var(--bg-soft); }
.section-heading { max-width: 770px; margin-bottom: 48px; }

.section-heading > p:last-child,
.research-copy,
.feature p,
.contact-card p { color: var(--text-soft); }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.feature {
  min-height: 255px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.feature-number { margin-bottom: 46px; color: var(--accent); font-size: 0.85rem; font-weight: 800; }

.research-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 72px;
  align-items: start;
}

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

.contact-section { padding-top: 84px; padding-bottom: 84px; }

.contact-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: end;
  padding: 42px;
  border-radius: var(--radius);
  background: var(--bg-dark);
  color: var(--white);
}

.contact-card h2 { margin-bottom: 12px; }

.contact-card p {
  max-width: 650px;
  margin-bottom: 0;
  color: #b8c1d1;
}

.contact-data { min-width: 250px; }
.contact-data .contact-name { margin-bottom: 5px; color: var(--white); font-weight: 750; }
.contact-data a { color: #9fb8ff; text-decoration: none; }
.contact-data a:hover { text-decoration: underline; }

.site-footer { border-top: 1px solid var(--line); }

.footer-inner {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-inner > p { margin: 0; color: var(--text-soft); font-size: 0.9rem; }
.footer-links { display: flex; gap: 22px; }

.legal-page { padding: 74px 0 96px; }
.legal-content { max-width: 820px; }
.legal-content h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); margin-bottom: 18px; }
.legal-content h2 { margin-top: 42px; font-size: 1.45rem; }

.legal-content p,
.legal-content li { color: var(--text-soft); }

.legal-content a { color: var(--accent); }

.back-link {
  display: inline-block;
  margin-bottom: 36px;
  color: var(--text-soft);
  text-decoration: none;
}

.back-link:hover { color: var(--text); }

@media (max-width: 860px) {
  .hero { padding: 68px 0; }
  .hero-grid, .research-grid, .contact-card { grid-template-columns: 1fr; }
  .hero-grid, .research-grid { gap: 38px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature { min-height: auto; }
  .feature-number { margin-bottom: 26px; }
  .contact-card { align-items: start; }
}

@media (max-width: 640px) {
  .container { width: min(var(--container), calc(100% - 28px)); }
  .nav { min-height: 64px; }
  .nav-links { gap: 14px; }
  .nav-links a { font-size: 0.86rem; }
  .hero { padding-top: 56px; }
  h1 { font-size: clamp(2.7rem, 15vw, 4rem); }
  .section { padding: 68px 0; }
  .hero-card, .contact-card { padding: 26px; }
  .footer-inner { padding: 24px 0; flex-direction: column; align-items: flex-start; }
}