:root {
  color-scheme: dark;
  --bg: #0c1117;
  --panel: #121a22;
  --panel-soft: #18222c;
  --text: #f3f7fa;
  --muted: #9baab7;
  --line: #26333e;
  --accent: #43d3c1;
  --accent-soft: rgba(67, 211, 193, 0.12);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 15% 0%, rgba(43, 104, 132, 0.24), transparent 32rem),
    var(--bg);
  color: var(--text);
  line-height: 1.65;
}

a { color: var(--accent); }
a:hover { color: #72e3d5; }

.shell {
  width: min(920px, calc(100% - 40px));
  margin: 0 auto;
}

header {
  border-bottom: 1px solid var(--line);
  background: rgba(12, 17, 23, 0.84);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  z-index: 10;
}

nav {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  color: var(--text);
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-links { display: flex; gap: 20px; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 14px; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); }

main { padding: 72px 0 96px; }

.hero { padding: 48px 0 72px; }

.eyebrow {
  display: inline-flex;
  padding: 6px 10px;
  border: 1px solid rgba(67, 211, 193, 0.28);
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  max-width: 760px;
  margin: 22px 0 18px;
  font-size: clamp(42px, 8vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.055em;
}

.page-title { font-size: clamp(36px, 6vw, 56px); }

.lede {
  max-width: 690px;
  color: var(--muted);
  font-size: 19px;
}

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.button {
  display: inline-flex;
  align-items: center;
  padding: 11px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--text);
  background: var(--panel-soft);
  text-decoration: none;
  font-weight: 650;
}

.button.primary { background: var(--accent); color: #06110f; border-color: var(--accent); }

.support-address {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.support-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(18, 26, 34, 0.88);
}

.support-card h2 {
  margin: 8px 0 10px;
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.support-card p {
  margin: 0;
  color: #c4d0d8;
  font-size: 15px;
}

.card-label {
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.support-guide { margin-top: 24px; }

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.card, article {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(18, 26, 34, 0.88);
}

.card { padding: 26px; }
.card h2 { margin: 0 0 8px; font-size: 20px; }
.card p { margin: 0; color: var(--muted); }

article { padding: clamp(24px, 5vw, 56px); }
article h2 { margin-top: 44px; font-size: 25px; letter-spacing: -0.02em; }
article h2:first-child { margin-top: 0; }
article h3 { margin-top: 28px; }
article p, article li { color: #c4d0d8; }
article hr { border: 0; border-top: 1px solid var(--line); margin: 56px 0; }

.meta { color: var(--muted); font-size: 14px; margin-bottom: 28px; }
.language-jump { margin: 20px 0 32px; }

footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  padding: 28px 0 48px;
}

@media (max-width: 640px) {
  .shell { width: min(100% - 28px, 920px); }
  nav { align-items: flex-start; flex-direction: column; padding: 16px 0; gap: 8px; }
  .nav-links { gap: 14px; }
  main { padding-top: 42px; }
  .grid, .support-grid { grid-template-columns: 1fr; }
}