:root {
  --bg: #ffffff;
  --bg-muted: #f6f7fb;
  --text: #111827;
  --muted: #5b6472;
  --line: #e5e7eb;
  --card: #ffffff;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
  --radius: 22px;
}

* { 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;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a { color: inherit; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.section { padding: 92px 0; }
.muted { background: var(--bg-muted); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255,255,255,0.86);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(229,231,235,0.8);
}
.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  text-decoration: none;
  font-weight: 800;
  color: white;
  background: linear-gradient(135deg, #111827, #2563eb);
  box-shadow: var(--shadow);
}
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a { text-decoration: none; color: var(--muted); font-weight: 600; font-size: 0.95rem; }
.nav-links a:hover { color: var(--text); }
.nav-cta { color: white !important; background: var(--text); padding: 10px 16px; border-radius: 999px; }
.nav-toggle { display: none; border: 0; background: transparent; font-size: 1.6rem; }

.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 56px;
  align-items: center;
}
.eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 800;
  font-size: 0.78rem;
  margin: 0 0 14px;
}
h1, h2, h3 { line-height: 1.12; margin: 0; }
h1 { font-size: clamp(3rem, 6vw, 5.9rem); letter-spacing: -0.065em; }
h2 { font-size: clamp(2rem, 4vw, 3.4rem); letter-spacing: -0.045em; }
h3 { font-size: 1.25rem; letter-spacing: -0.02em; }
.hero-text { margin: 28px 0 0; font-size: 1.18rem; color: var(--muted); max-width: 720px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 34px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 800;
}
.primary { background: var(--accent); color: white; }
.primary:hover { background: var(--accent-dark); }
.secondary { background: #eef2ff; color: #1e3a8a; }
.hero-meta { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 30px; }
.hero-meta span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  color: var(--muted);
  font-size: 0.92rem;
  background: white;
}
.hero-card, .card, .article-card, .callout, .contact-card, .timeline-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.hero-card { padding: 34px; position: relative; }
.status-dot { width: 12px; height: 12px; border-radius: 50%; background: #22c55e; margin-bottom: 18px; box-shadow: 0 0 0 8px rgba(34,197,94,0.12); }
.hero-card p, .card p, .article-card p, .timeline-item p { color: var(--muted); }
dl { margin: 28px 0 0; display: grid; gap: 18px; }
dt { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.1em; font-weight: 800; color: var(--muted); }
dd { margin: 4px 0 0; font-weight: 700; }

.section-heading { max-width: 760px; margin-bottom: 40px; }
.section-heading.narrow { max-width: 820px; }
.section-heading p:not(.eyebrow) { color: var(--muted); font-size: 1.08rem; }
.cards.three { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card { padding: 28px; }
.card ul { padding-left: 20px; margin: 20px 0 0; color: var(--muted); }
.card li + li { margin-top: 8px; }

.impact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 36px; }
.metric { border-left: 4px solid var(--accent); background: var(--bg-muted); border-radius: 18px; padding: 24px; }
.metric strong { display: block; font-size: 2.2rem; letter-spacing: -0.04em; }
.metric span { color: var(--muted); }
.callout { padding: 30px; margin-top: 26px; }
.callout p { color: var(--muted); margin-bottom: 0; }

.article-list { display: grid; gap: 18px; }
.article-card { padding: 26px; }
.article-card h3 { margin: 10px 0; }
.article-card h3 a { text-decoration: none; }
.article-card h3 a:hover { color: var(--accent); }
.tag { display: inline-flex; font-size: 0.8rem; font-weight: 800; color: var(--accent); background: #eef2ff; padding: 6px 10px; border-radius: 999px; }

.split { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 60px; align-items: start; }
.prose p { color: var(--muted); font-size: 1.08rem; margin-top: 0; }
.timeline { display: grid; gap: 16px; }
.timeline-item { padding: 24px; }
.timeline-item span { color: var(--accent); font-weight: 800; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.1em; }
.timeline-item h3 { margin-top: 8px; }

.contact-section { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.contact-section p { color: var(--muted); }
.contact-card { padding: 28px; display: grid; gap: 14px; }
.contact-card a { font-weight: 800; color: var(--accent); text-decoration: none; }
.footer { border-top: 1px solid var(--line); padding: 28px 0; }
.footer-inner { display: flex; justify-content: space-between; gap: 20px; color: var(--muted); }
.footer a { text-decoration: none; font-weight: 700; }

.article-page { max-width: 780px; }
.article-page h1 { font-size: clamp(2.6rem, 5vw, 4.6rem); }
.article-page h2 { margin-top: 42px; font-size: 1.7rem; }
.article-page p { color: var(--muted); font-size: 1.08rem; }
.article-meta { border-bottom: 1px solid var(--line); padding-bottom: 22px; }

@media (max-width: 880px) {
  .nav-toggle { display: block; }
  .nav-links { display: none; position: absolute; left: 20px; right: 20px; top: 72px; flex-direction: column; align-items: stretch; padding: 20px; background: white; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
  .nav-links.open, .nav-links.visible { display: flex; }
  .hero, .cards.three, .impact-grid, .split, .contact-section { grid-template-columns: 1fr; }
  .section { padding: 70px 0; }
  h1 { font-size: clamp(2.8rem, 12vw, 4.4rem); }
}

@media (max-width: 520px) {
  .container { width: min(100% - 28px, 1120px); }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .footer-inner { flex-direction: column; }
}