:root {
  --bg: #0c1017;
  --bg-elev: #121923;
  --panel: #161e29;
  --line: #2a3545;
  --text: #e8eef4;
  --muted: #8b98a8;
  --blue: #4d8ef5;
  --blue-dim: #3a6fc4;
  --green: #3dba7a;
  --warn: #e0b44b;
  --sidebar: 268px;
  --top: 56px;
  --radius: 10px;
  --sans: "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 var(--sans);
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--blue);
  color: #fff;
  padding: 8px 12px;
  z-index: 200;
}
.skip:focus { left: 0; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--top);
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 18px;
  background: rgba(12, 16, 23, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.02em;
}
.brand:hover { text-decoration: none; }
.mark {
  width: 22px;
  height: 22px;
  border-radius: 5px;
  background: linear-gradient(135deg, var(--blue), var(--green));
}
.lang-pill {
  font-size: 0.72rem;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 2px 8px;
  border-radius: 999px;
}
.lang-pill a { color: var(--green); }
.lang-pill a:hover { color: var(--text); text-decoration: none; }
.top-links { margin-left: auto; display: flex; gap: 16px; font-size: 0.92rem; }
.top-links a { color: var(--muted); }
.top-links a:hover { color: var(--text); text-decoration: none; }
.menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  border-radius: 8px;
  cursor: pointer;
}

.layout {
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 1fr);
  min-height: calc(100vh - var(--top));
}
.sidebar {
  border-right: 1px solid var(--line);
  background: var(--bg-elev);
  padding: 22px 14px 48px;
  position: sticky;
  top: var(--top);
  height: calc(100vh - var(--top));
  overflow: auto;
}
.nav-label {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 18px 10px 8px;
}
.sidebar a {
  display: block;
  color: var(--muted);
  padding: 7px 10px;
  border-radius: 7px;
  text-decoration: none;
}
.sidebar a:hover { color: var(--text); background: #1c2633; }

.page {
  max-width: 820px;
  padding: 36px 40px 80px;
}
h1 { font-size: clamp(1.7rem, 3vw, 2.15rem); line-height: 1.2; margin: 0 0 12px; }
h2 { font-size: 1.28rem; margin: 38px 0 10px; padding-top: 8px; scroll-margin-top: calc(var(--top) + 16px); }
h3 { font-size: 1.05rem; margin: 24px 0 8px; color: #c9d6e3; }
.lead { color: var(--muted); font-size: 1.08rem; max-width: 62ch; }
p { margin: 0 0 12px; }
ul, ol { margin: 0 0 16px; padding-left: 1.2em; }
li { margin: 0 0 6px; }

.hero-docs {
  background:
    radial-gradient(700px 280px at 90% -20%, rgba(77, 142, 245, 0.16), transparent),
    radial-gradient(500px 220px at 0% 0%, rgba(61, 186, 122, 0.1), transparent);
  margin: -36px -40px 28px;
  padding: 48px 40px 36px;
  border-bottom: 1px solid var(--line);
}
.kicker {
  color: var(--green);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin: 0 0 8px;
}
.contact-line {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  color: var(--muted);
  font-size: 0.95rem;
  margin-top: 14px;
}
.contact-line a { color: var(--blue); }

.note, .tip {
  border: 1px solid var(--line);
  border-left-width: 3px;
  background: var(--panel);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 12px 14px;
  margin: 16px 0 20px;
  color: #c5d0db;
}
.note { border-left-color: var(--blue); }
.tip { border-left-color: var(--green); }
.note strong, .tip strong { display: block; margin-bottom: 4px; color: var(--text); }

.role {
  margin: 0 0 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.role-meta {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 4px 0 10px;
}
.role ul { margin-top: 8px; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 22px;
  font-size: 0.92rem;
}
th, td {
  text-align: left;
  vertical-align: top;
  padding: 9px 10px;
  border-bottom: 1px solid var(--line);
}
th { color: #9fb4c9; font-weight: 600; background: #141c27; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
  margin: 18px 0 28px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}
.card h3 { margin: 0 0 6px; color: var(--text); }
.card p { color: var(--muted); margin: 0 0 8px; font-size: 0.92rem; }
.card .tags {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.card .tags li {
  margin: 0;
  font-size: 0.78rem;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 2px 8px;
}

.award {
  margin: 0 0 18px;
  padding: 14px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.award h3 { margin: 0 0 6px; font-size: 1rem; }
.award p { margin: 0; color: var(--muted); font-size: 0.92rem; }

footer.site {
  margin-top: 48px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
}

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

@media (max-width: 920px) {
  .menu-btn { display: inline-flex; align-items: center; justify-content: center; }
  .layout { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    z-index: 35;
    left: 0;
    top: var(--top);
    width: min(86vw, 300px);
    transform: translateX(-105%);
    transition: transform 0.18s ease;
  }
  .sidebar.open { transform: none; }
  .page { padding: 28px 18px 64px; }
  .hero-docs { margin: -28px -18px 22px; padding: 32px 18px 24px; }
  .top-links { display: none; }
}

@media print {
  .topbar, .sidebar, .menu-btn, .skip { display: none !important; }
  .layout { display: block; }
  .page { max-width: none; padding: 0; }
  .hero-docs {
    margin: 0 0 20px;
    padding: 0 0 16px;
    background: none;
    border-bottom: 2px solid #ccc;
  }
  body { background: #fff; color: #111; font-size: 11pt; }
  a { color: #111; text-decoration: none; }
  h2 { page-break-after: avoid; }
  .role, .award, .card { page-break-inside: avoid; }
}