:root {
  --bg: #0a0d12;
  --surface: #11161e;
  --surface-2: #161c26;
  --border: #232a36;
  --text: #e6ecf3;
  --muted: #8a96a8;
  --accent: #6ee7ff;
  --accent-2: #a78bfa;
  --good: #4ade80;
  --warn: #fbbf24;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --radius: 10px;
  --shadow: 0 1px 0 rgba(255,255,255,0.04) inset, 0 24px 48px -24px rgba(0,0,0,0.6);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fafafa;
    --surface: #ffffff;
    --surface-2: #f3f5f8;
    --border: #e3e8ef;
    --text: #15181f;
    --muted: #5b6573;
    --accent: #0891b2;
    --accent-2: #7c3aed;
    --shadow: 0 1px 0 rgba(0,0,0,0.04) inset, 0 24px 48px -24px rgba(0,0,0,0.12);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  font-feature-settings: "cv11","ss01","ss03";
  background: radial-gradient(1200px 600px at 50% -20%, rgba(110,231,255,0.08), transparent 60%), var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
@supports (font-variation-settings: normal) {
  body { font-family: "Inter var", "Inter", system-ui, sans-serif; }
}

.wrap { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--mono); font-size: 0.9em; }
.muted { color: var(--muted); }
.hint { color: var(--muted); margin-top: 12px; }

/* HEADER ----- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(10,13,18,0.7);
  border-bottom: 1px solid var(--border);
}
@media (prefers-color-scheme: light) {
  .site-header { background: rgba(255,255,255,0.78); }
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; padding: 14px 24px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 14px; }
.brand .logo {
  width: 40px; height: 40px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #061018; border-radius: 10px; font-size: 20px; font-weight: 800;
}
.brand h1 { font-size: 17px; margin: 0; letter-spacing: -0.01em; font-weight: 700; }
.brand .tag { margin: 0; color: var(--muted); font-size: 13px; }
.site-header nav { display: flex; gap: 18px; flex-wrap: wrap; }
.site-header nav a { color: var(--text); font-size: 14px; opacity: 0.78; }
.site-header nav a:hover { opacity: 1; text-decoration: none; }

/* HERO ----- */
.hero { padding: 64px 0 32px; }
.hero h2 {
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: -0.02em;
  font-weight: 800;
  line-height: 1.1;
  margin: 0 0 16px;
  background: linear-gradient(120deg, var(--text) 30%, var(--accent) 80%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero .lede { font-size: 18px; max-width: 720px; color: var(--muted); margin: 0 0 32px; }

.kms-target { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.kms-target-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex; flex-direction: column; gap: 6px;
  box-shadow: var(--shadow);
}
.kms-target-item .muted { font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; }
.kms-target-item code { font-size: 14px; }

/* SECTIONS ----- */
main { padding-bottom: 96px; }
section { padding: 56px 0 8px; scroll-margin-top: 80px; }
section h2 {
  font-size: 26px; margin: 0 0 8px;
  letter-spacing: -0.01em; font-weight: 700;
}
section > p:first-of-type { margin-top: 0; }

.family-head {
  margin: 32px 0 12px;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-weight: 600;
}

/* CARD / TERMINAL ----- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 16px 0;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.card-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 16px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.card pre { margin: 0; padding: 18px 20px; overflow-x: auto; }
.card pre code { color: var(--text); font-size: 13.5px; line-height: 1.6; }

.card details summary, details summary {
  cursor: pointer; padding: 14px 18px; font-weight: 600; user-select: none;
  list-style: none;
}
details summary::-webkit-details-marker { display: none; }
details summary::before { content: "▸"; display: inline-block; margin-right: 10px; transform: translateY(-1px); transition: transform 150ms ease; color: var(--muted); }
details[open] summary::before { transform: rotate(90deg); }
details pre { margin: 0; padding: 0 18px 18px; overflow-x: auto; background: transparent; }

.btn-copy {
  background: rgba(110,231,255,0.12);
  border: 1px solid rgba(110,231,255,0.3);
  color: var(--accent);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  font-family: var(--sans);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: background 120ms ease, transform 120ms ease;
}
.btn-copy:hover { background: rgba(110,231,255,0.22); }
.btn-copy:active { transform: scale(0.96); }
.btn-copy.copied { background: rgba(74,222,128,0.18); border-color: rgba(74,222,128,0.4); color: var(--good); }

/* TABLES ----- */
.key-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 0 0 12px;
  box-shadow: var(--shadow);
}
.key-table th, .key-table td {
  text-align: left;
  padding: 10px 14px;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.key-table thead th {
  background: var(--surface-2);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.key-table tbody tr:last-child td { border-bottom: 0; }
.key-table tr.current td:first-child { color: var(--text); }
.key-table .notes-col { color: var(--muted); font-size: 13px; max-width: 380px; }

.badge {
  display: inline-block;
  background: rgba(74,222,128,0.16);
  color: var(--good);
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  margin-left: 8px;
  vertical-align: middle;
}

/* COPY-CODE INLINE ----- */
code.copy {
  cursor: pointer;
  display: inline-block;
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  transition: background 120ms ease, border-color 120ms ease, color 120ms ease;
  font-family: var(--mono);
  user-select: all;
}
code.copy:hover { background: rgba(110,231,255,0.1); border-color: rgba(110,231,255,0.4); color: var(--accent); }
code.copy.copied { background: rgba(74,222,128,0.12); border-color: rgba(74,222,128,0.5); color: var(--good); }

/* DOWNLOADS ----- */
.dl {
  display: inline-block;
  padding: 10px 16px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #061018;
  border-radius: 8px;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.01em;
  margin: 8px 0;
}
.dl:hover { text-decoration: none; filter: brightness(1.06); }

.dl-list { padding-left: 18px; line-height: 1.9; }
.dl-list li::marker { color: var(--accent); }

/* FAQ ----- */
.faq details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 10px 0;
  box-shadow: var(--shadow);
}
.faq details p { margin: 0 18px 16px; color: var(--muted); }
.faq details code { color: var(--text); }

/* FOOTER ----- */
footer {
  border-top: 1px solid var(--border);
  margin-top: 48px;
  padding: 24px 0;
  font-size: 13px;
  color: var(--muted);
}

/* MOBILE ----- */
@media (max-width: 760px) {
  .site-header .wrap { flex-direction: column; align-items: flex-start; gap: 8px; padding: 12px 18px; }
  .site-header nav { gap: 10px; }
  .hero { padding: 36px 0 16px; }
  .key-table th:nth-child(3), .key-table td:nth-child(3) { display: none; }
}