:root {
  --ink: #17202a;
  --muted: #5f6b7a;
  --line: #d9e0e8;
  --paper: #fbfcfd;
  --soft: #eef4f6;
  --brand: #0f766e;
  --brand-dark: #134e4a;
  --accent: #b45309;
  --white: #ffffff;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
}
a { color: inherit; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.narrow { width: min(780px, calc(100% - 32px)); }
.skip-link { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--white); padding: 8px 12px; z-index: 5; }
.skip-link:focus { left: 8px; }
.site-header { position: sticky; top: 0; z-index: 4; background: rgba(251, 252, 253, 0.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(10px); }
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 72px; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-mark { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 8px; background: var(--brand); color: var(--white); font-weight: 700; }
.brand small { display: block; color: var(--muted); font-size: 12px; line-height: 1.2; }
.main-nav { display: flex; align-items: center; gap: 20px; color: var(--muted); font-size: 15px; }
.main-nav a { text-decoration: none; }
.main-nav a:hover { color: var(--brand-dark); }
.nav-toggle { display: none; border: 1px solid var(--line); background: var(--white); border-radius: 8px; padding: 8px 12px; }
.hero { background: linear-gradient(180deg, #eef7f5 0%, #fbfcfd 100%); border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.8fr); gap: 40px; align-items: center; padding: 64px 0; }
.eyebrow { color: var(--brand-dark); font-size: 13px; font-weight: 700; letter-spacing: 0; text-transform: uppercase; text-decoration: none; }
h1, h2, h3 { line-height: 1.22; margin: 0 0 12px; }
h1 { font-size: clamp(34px, 6vw, 58px); max-width: 920px; }
h2 { font-size: 28px; }
h3 { font-size: 20px; }
.lead { color: var(--muted); font-size: 19px; margin: 0 0 24px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; border-radius: 8px; padding: 10px 16px; text-decoration: none; font-weight: 700; }
.button.primary { background: var(--brand); color: var(--white); }
.button.secondary { border: 1px solid var(--line); background: var(--white); color: var(--brand-dark); }
.hero-panel, .note-box, .contact-box { background: var(--white); border: 1px solid var(--line); border-radius: 8px; padding: 22px; box-shadow: 0 12px 28px rgba(23, 32, 42, 0.06); }
.hero-panel ul { margin: 12px 0 0; padding-left: 20px; color: var(--muted); }
.section { padding: 56px 0; }
.muted { background: var(--soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-heading { margin-bottom: 22px; }
.split { display: flex; align-items: end; justify-content: space-between; gap: 20px; }
.text-link { color: var(--brand-dark); font-weight: 700; }
.category-grid, .article-grid, .contact-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.article-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.contact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.category-card, .article-card { background: var(--white); border: 1px solid var(--line); border-radius: 8px; transition: transform 160ms ease, box-shadow 160ms ease; }
.category-card { display: block; padding: 22px; text-decoration: none; min-height: 180px; }
.category-card p, .article-card p { color: var(--muted); margin: 0 0 14px; }
.category-card small, .article-card small { color: var(--accent); font-weight: 700; }
.article-card .card-link { display: block; height: 100%; padding: 22px; text-decoration: none; }
.category-card:hover, .article-card:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(23, 32, 42, 0.08); }
.page-title { padding: 54px 0 34px; background: var(--soft); border-bottom: 1px solid var(--line); }
.article-hero { padding: 54px 0 36px; background: var(--soft); border-bottom: 1px solid var(--line); }
.article-meta { display: flex; flex-wrap: wrap; gap: 10px 18px; color: var(--muted); font-size: 14px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 40px; padding: 48px 0 64px; align-items: start; }
.article-content { background: var(--white); border: 1px solid var(--line); border-radius: 8px; padding: 32px; }
.article-content p, .prose p { color: #334155; margin-top: 0; }
.article-content section + section { margin-top: 28px; }
.sidebar { position: sticky; top: 96px; background: var(--white); border: 1px solid var(--line); border-radius: 8px; padding: 20px; }
.sidebar a { display: block; color: var(--brand-dark); text-decoration: none; padding: 10px 0; border-top: 1px solid var(--line); }
.note-box { margin-top: 30px; color: #334155; box-shadow: none; }
.prose { background: var(--white); border: 1px solid var(--line); border-radius: 8px; padding: 30px; }
.site-footer { background: #17202a; color: var(--white); padding: 42px 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 0.7fr 0.8fr; gap: 32px; }
.site-footer p, .site-footer small { color: #cbd5e1; }
.site-footer a { display: block; color: #e2e8f0; text-decoration: none; margin: 8px 0; }
.footer-brand { display: inline-flex; margin-bottom: 10px; }

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .main-nav { display: none; position: absolute; left: 16px; right: 16px; top: 72px; background: var(--white); border: 1px solid var(--line); border-radius: 8px; padding: 12px; flex-direction: column; align-items: stretch; }
  .main-nav.is-open { display: flex; }
  .hero-grid, .article-layout, .footer-grid, .contact-grid { grid-template-columns: 1fr; }
  .category-grid, .article-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .article-content { padding: 24px; }
  .sidebar { position: static; }
}

@media (max-width: 560px) {
  .category-grid, .article-grid { grid-template-columns: 1fr; }
  .hero-grid { padding: 44px 0; }
  h1 { font-size: 34px; }
  .lead { font-size: 17px; }
  .split { display: block; }
}