:root {
  --bg: #070b14;
  --bg-2: #0b1120;
  --panel: #0e1628;
  --panel-2: #111c33;
  --border: #1d2a44;
  --text: #e6ecf7;
  --muted: #8b9bb8;
  --accent: #6366f1;
  --accent-2: #22d3ee;
  --good: #34d399;
  --bad: #f87171;
  --radius: 14px;
  font-size: 16px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background:
    radial-gradient(1000px 500px at 80% -10%, rgba(99,102,241,.18), transparent 60%),
    radial-gradient(800px 400px at 10% 0%, rgba(34,211,238,.10), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-2); text-decoration: none; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.nav {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1100px; margin: 0 auto; padding: 22px 24px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.15rem; color: var(--text); }
.brand .dot {
  width: 26px; height: 26px; border-radius: 8px;
  box-shadow: 0 0 18px rgba(99,102,241,.55);
}
.nav .links { display: flex; gap: 26px; align-items: center; }
.nav .links a { color: var(--muted); font-size: .95rem; }
.nav .links a:hover { color: var(--text); }

.btn {
  display: inline-block; padding: 12px 22px; border-radius: 10px; border: 0;
  font-weight: 600; font-size: .95rem; cursor: pointer;
  background: linear-gradient(135deg, var(--accent), #4f46e5);
  color: white; box-shadow: 0 4px 24px rgba(99,102,241,.35);
}
.btn:hover { filter: brightness(1.1); }
.btn.ghost {
  background: transparent; border: 1px solid var(--border); color: var(--text);
  box-shadow: none;
}
.btn.small { padding: 8px 14px; font-size: .85rem; }
.btn.danger { background: transparent; border: 1px solid #7f1d1d; color: var(--bad); box-shadow: none; }

.hero { max-width: 900px; margin: 70px auto 0; text-align: center; padding: 0 24px; }
.hero .tag {
  display: inline-block; padding: 6px 16px; border: 1px solid var(--border);
  border-radius: 999px; color: var(--muted); font-size: .8rem; letter-spacing: .12em;
  text-transform: uppercase;
}
.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem); line-height: 1.05; margin: 26px 0 18px;
  letter-spacing: -.02em;
}
.hero h1 .grad {
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.sub { color: var(--muted); font-size: 1.15rem; line-height: 1.6; max-width: 640px; margin: 0 auto 34px; }
.cta { display: flex; gap: 14px; justify-content: center; margin-bottom: 60px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; max-width: 1100px; margin: 0 auto 70px; padding: 0 24px; }
.card {
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border: 1px solid var(--border); border-radius: var(--radius); padding: 24px;
}
.card h3 { font-size: 1rem; margin-bottom: 8px; }
.card .kicker { color: var(--accent-2); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; display: block; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: .92rem; line-height: 1.55; }

.quickstart { max-width: 760px; margin: 0 auto 90px; padding: 0 24px; }
.quickstart h2 { text-align: center; margin-bottom: 18px; font-size: 1.5rem; }
pre.code {
  background: #0a0f1d; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; overflow-x: auto; font-size: .85rem; line-height: 1.65; color: #c9d6ee;
}
pre.code .c { color: #5d708f; }
pre.code .s { color: #7dd3a8; }

.footer { text-align: center; color: var(--muted); font-size: .85rem; padding: 40px 0 60px; }

/* ---- console ---- */
.shell { display: flex; min-height: 100vh; }
.side {
  width: 230px; flex-shrink: 0; border-right: 1px solid var(--border);
  padding: 24px 14px; background: rgba(10, 15, 29, .6);
}
.side .brand { padding: 0 10px 26px; }
.side nav a {
  display: flex; align-items: center; gap: 10px; padding: 11px 14px; border-radius: 10px;
  color: var(--muted); font-size: .93rem; margin-bottom: 4px;
}
.side nav a.active, .side nav a:hover { background: var(--panel-2); color: var(--text); }
.main { flex: 1; padding: 34px 40px; max-width: 1100px; }
.main h1 { font-size: 1.7rem; margin-bottom: 6px; }
.main .sub { color: var(--muted); margin-bottom: 28px; font-size: .95rem; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 28px; }
.stat { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.stat .label { color: var(--muted); font-size: .82rem; margin-bottom: 8px; }
.stat .value { font-size: 1.9rem; font-weight: 700; }

.panel { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin-bottom: 24px; }
.panel h2 { font-size: 1.05rem; margin-bottom: 16px; }

table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th { text-align: left; color: var(--muted); font-weight: 500; font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; padding: 8px 10px; border-bottom: 1px solid var(--border); }
td { padding: 12px 10px; border-bottom: 1px solid rgba(29,42,68,.5); }

input, textarea, select {
  width: 100%; background: #0a0f1d; color: var(--text); border: 1px solid var(--border);
  border-radius: 10px; padding: 12px 14px; font-size: .95rem; outline: none;
}
input:focus, textarea:focus { border-color: var(--accent); }
label { display: block; color: var(--muted); font-size: .85rem; margin: 14px 0 6px; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: .75rem; }
.badge.ok { background: rgba(52,211,153,.12); color: var(--good); }
.badge.off { background: rgba(248,113,113,.12); color: var(--bad); }

.keybox {
  background: #0a0f1d; border: 1px dashed var(--accent); border-radius: var(--radius);
  padding: 18px; font-family: ui-monospace, Menlo, monospace; font-size: .9rem;
  word-break: break-all; margin: 14px 0;
}
.note { color: var(--muted); font-size: .85rem; line-height: 1.5; }
.spark { width: 100%; height: 180px; }
.row { display: flex; gap: 12px; align-items: end; }
.row > * { flex: 1; }
.hidden { display: none !important; }
.result pre { white-space: pre-wrap; }
.center-card { max-width: 460px; margin: 90px auto; padding: 0 24px; }