:root {
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --ink: #111827;
  --muted: #6b7280;
  --blue: #2563eb;
  --blue-hover: #1d4ed8;
  --teal: #0f766e;
  --line: #e5e7eb;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.05), 0 10px 28px rgba(15, 23, 42, 0.05);
  --max: 1200px;
  --article: 800px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--blue); text-underline-offset: 3px; }
a:hover { color: var(--blue-hover); }

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 20;
  padding: 8px 12px;
  background: #fff;
  color: var(--ink);
}

.skip-link:focus { top: 12px; }

.wrap {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.article-wrap {
  width: min(var(--article), calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 8;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--ink);
}

.logo img,
.logo svg { display: block; }

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-desktop a {
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
}

.nav-desktop a[aria-current="page"],
.nav-desktop a:hover { color: var(--blue); }

.lang-switch {
  display: flex;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
}

.lang-switch a {
  color: var(--muted);
  text-decoration: none;
  padding: 4px 6px;
}

.lang-switch a[aria-current="true"],
.lang-switch a:hover { color: var(--blue); }

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 14px;
}

.hero,
.section {
  padding: 72px 0;
}

.section-soft { background: var(--bg-soft); }

h1, h2, h3 { line-height: 1.25; margin: 0 0 14px; }
h1 { font-size: 44px; letter-spacing: -0.03em; }
h2 { font-size: 28px; letter-spacing: -0.02em; margin-top: 0; }
h3 { font-size: 20px; }

.lead {
  color: var(--muted);
  font-size: 18px;
  max-width: 720px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  background: var(--blue);
  color: #fff;
}

.btn:hover { background: var(--blue-hover); color: #fff; }

.btn-ghost {
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn-ghost:hover { color: var(--blue); border-color: var(--blue); }

.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, 1fr);
}

.cards-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
}

.card h3 { margin-top: 0; }

.article-card { padding: 0; overflow: hidden; }

.article-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }

.article-card .card-body { padding: 18px 20px 22px; }

.meta {
  color: var(--muted);
  font-size: 13px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.wide-media {
  width: min(var(--max), calc(100% - 40px));
  margin: 28px auto;
}

.wide-media img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.breadcrumbs {
  font-size: 14px;
  margin: 0 0 20px;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin-left: 8px;
  color: var(--muted);
}

.breadcrumbs [aria-current="page"] { color: var(--muted); }

.faq details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 10px;
}

.faq summary { cursor: pointer; font-weight: 650; }

.chooser {
  min-height: calc(100vh - 160px);
  display: grid;
  place-items: center;
  text-align: center;
  padding: 80px 0;
}

.chooser .lang-list {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 36px 0 48px;
  color: var(--muted);
  font-size: 14px;
  background: var(--bg-soft);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 24px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.footer-nav a { color: var(--muted); text-decoration: none; }
.footer-nav a:hover { color: var(--blue); }

.nav-mobile {
  display: none;
  border-top: 1px solid var(--line);
  padding: 12px 0 16px;
}

.nav-mobile.open { display: block; }

.nav-mobile a {
  display: block;
  padding: 10px 0;
  color: var(--ink);
  text-decoration: none;
}

@media (max-width: 900px) {
  .grid, .cards-2, .footer-grid { grid-template-columns: 1fr; }
  h1 { font-size: 34px; }
  .hero, .section { padding: 48px 0; }
}

@media (max-width: 768px) {
  .nav-desktop { display: none; }
  .menu-toggle { display: inline-flex; }
  .header-row { min-height: 60px; }
}

@media (min-width: 769px) {
  .nav-mobile { display: none !important; }
}