:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-soft: #eef2f7;
  --text: #172033;
  --muted: #687086;
  --border: #dfe4ec;
  --accent: #2457d6;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.72;
}
.wrap { max-width: 980px; margin: 0 auto; padding: 0 24px; }
.site-header {
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  z-index: 10;
}
.header-grid, .footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
}
.header-grid { padding-top: 22px; padding-bottom: 22px; }
.brand {
  color: var(--text);
  text-decoration: none;
  font-size: 1.28rem;
  font-weight: 800;
}
.role { margin: 2px 0 0; font-weight: 650; color: var(--accent); }
.subtitle { margin: 6px 0 0; color: var(--muted); max-width: 650px; }
nav { display: flex; gap: 18px; white-space: nowrap; }
nav a, footer a, .text-link {
  color: var(--text);
  text-decoration: none;
  font-weight: 650;
}
nav a:hover, footer a:hover, .text-link:hover { color: var(--accent); }
.hero { padding: 76px 0 34px; }
.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.8rem);
  line-height: 1.02;
  letter-spacing: -0.055em;
  max-width: 850px;
  margin: 12px 0 22px;
}
.hero > p:last-child { font-size: 1.15rem; color: var(--muted); max-width: 700px; }
.eyebrow, .meta {
  color: var(--accent);
  font-weight: 750;
  letter-spacing: .02em;
  font-size: .9rem;
}
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin: 24px 0 48px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 28px;
  box-shadow: 0 10px 30px rgba(25, 35, 60, 0.05);
}
.card h2 { margin: 10px 0 16px; line-height: 1.25; font-size: 1.35rem; }
.card p { color: var(--muted); }
.card .text-link { display: inline-block; margin-top: 8px; color: var(--accent); }
article {
  background: var(--surface);
  margin: 48px 0 32px;
  padding: 54px;
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 12px 40px rgba(25, 35, 60, 0.06);
}
article h1 {
  font-size: clamp(2rem, 5vw, 3.35rem);
  line-height: 1.1;
  margin: 10px 0 28px;
  letter-spacing: -0.04em;
}
article h2 {
  font-size: 1.45rem;
  line-height: 1.3;
  margin-top: 40px;
}
article p { margin: 0 0 20px; }
.back-link { display: inline-block; margin-top: 32px; color: var(--accent); }
.disclaimer {
  margin-top: 38px;
  padding: 18px 20px;
  background: var(--surface-soft);
  border-left: 4px solid var(--accent);
  color: var(--muted);
  font-size: .95rem;
}
.about {
  display: grid;
  grid-template-columns: .75fr 1.6fr;
  gap: 50px;
  align-items: start;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 42px;
  margin: 32px 0 70px;
}
.about h2 { margin: 4px 0 0; font-size: 2rem; }
.about p:last-child { margin: 0; font-size: 1.05rem; }
footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
}
.footer-grid { padding-top: 24px; padding-bottom: 24px; color: var(--muted); font-size: .92rem; }
@media (max-width: 900px) {
  .articles-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .header-grid, .footer-grid { align-items: flex-start; flex-direction: column; gap: 14px; }
  nav { flex-wrap: wrap; }
  .site-header { position: static; }
  .hero { padding-top: 44px; }
  .articles-grid { grid-template-columns: 1fr; }
  article { padding: 30px 22px; border-radius: 0; margin-left: -16px; margin-right: -16px; }
  .about { grid-template-columns: 1fr; gap: 12px; padding: 28px 22px; }
  .wrap { padding: 0 16px; }
}