:root {
  --bg: #F2F5F9;
  --bg-soft: #F7FAFC;
  --bg-paper: #FFFFFF;
  --panel: #FFFFFF;
  --panel-soft: #FAFCFE;
  --line: rgba(15, 76, 129, 0.13);
  --line-soft: rgba(15, 76, 129, 0.07);
  --line-strong: rgba(14, 165, 233, 0.42);
  --ink: #0B2240;
  --ink-2: #14304F;
  --ink-dim: #486279;
  --ink-faint: #7E94A8;
  --cyan: #0EA5E9;
  --cyan-deep: #0369A1;
  --cyan-2: #38BDF8;
  --cyan-soft: rgba(14, 165, 233, 0.10);
  --amber: #F59E0B;
  --amber-deep: #B45309;
  --danger: #DC2626;
  --good: #16A34A;
  --radius: 4px;
  --radius-lg: 10px;
  --shadow-sm: 0 1px 2px rgba(11, 34, 64, 0.05);
  --shadow: 0 8px 30px -10px rgba(11, 34, 64, 0.18), 0 2px 6px -2px rgba(11, 34, 64, 0.08);
  --shadow-lg: 0 30px 60px -20px rgba(11, 34, 64, 0.25), 0 10px 20px -8px rgba(11, 34, 64, 0.10);
  --mono: 'JetBrains Mono', ui-monospace, Consolas, monospace;
  --display: 'Orbitron', 'Inter', sans-serif;
  --sans: 'Inter', system-ui, -apple-system, Segoe UI, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

body {
  overflow-x: hidden;
  background:
    radial-gradient(ellipse at 18% -10%, rgba(14, 165, 233, 0.10), transparent 55%),
    radial-gradient(ellipse at 95% 110%, rgba(245, 158, 11, 0.06), transparent 55%),
    linear-gradient(180deg, #F7FAFD 0%, #EEF3F8 100%);
}

.blueprint-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(14, 165, 233, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14, 165, 233, 0.07) 1px, transparent 1px),
    linear-gradient(rgba(14, 165, 233, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14, 165, 233, 0.028) 1px, transparent 1px);
  background-size: 80px 80px, 80px 80px, 16px 16px, 16px 16px;
  background-position: -1px -1px, -1px -1px, -1px -1px, -1px -1px;
  mask-image: radial-gradient(ellipse at center, black 60%, transparent 95%);
}

.bg-gear {
  position: fixed;
  pointer-events: none;
  z-index: 0;
  color: rgba(14, 165, 233, 0.10);
  animation: spin 80s linear infinite;
}
.bg-gear--lg { width: 720px; height: 720px; top: -180px; right: -180px; }
.bg-gear--sm { width: 420px; height: 420px; bottom: -120px; left: -120px; animation-direction: reverse; animation-duration: 60s; }
.bg-gear::before {
  content: '';
  display: block;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" fill="none" stroke="%230ea5e9" stroke-opacity="0.55" stroke-width="1.2"><path d="M32 6 L36 6 L37.5 12 A21 21 0 0 1 44.2 14.8 L49.5 11.4 L52.6 14.5 L49.2 19.8 A21 21 0 0 1 52 26.5 L58 28 L58 32 L52 33.5 A21 21 0 0 1 49.2 40.2 L52.6 45.5 L49.5 48.6 L44.2 45.2 A21 21 0 0 1 37.5 48 L36 54 L32 54 L28 54 L26.5 48 A21 21 0 0 1 19.8 45.2 L14.5 48.6 L11.4 45.5 L14.8 40.2 A21 21 0 0 1 12 33.5 L6 32 L6 28 L12 26.5 A21 21 0 0 1 14.8 19.8 L11.4 14.5 L14.5 11.4 L19.8 14.8 A21 21 0 0 1 26.5 12 L28 6 Z M32 21 a9 9 0 1 0 0 18 a9 9 0 1 0 0 -18"/></svg>') center/contain no-repeat;
}

@keyframes spin { to { transform: rotate(360deg); } }

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
  z-index: 1;
}

a { color: var(--cyan-deep); text-decoration: none; }
a:hover { color: var(--cyan); }

input, select, textarea, button {
  font: inherit;
  color: inherit;
}

::selection { background: rgba(14, 165, 233, 0.28); color: var(--ink); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  padding: 10px 16px;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: all 0.18s ease;
  position: relative;
  box-shadow: var(--shadow-sm);
}
.btn:hover {
  border-color: var(--cyan);
  color: var(--cyan-deep);
  background: rgba(14, 165, 233, 0.04);
  box-shadow: 0 6px 18px -10px rgba(14, 165, 233, 0.55);
}
.btn:active { transform: translateY(1px); }
.btn--primary {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--cyan-deep) 100%);
  border-color: var(--cyan-deep);
  color: #fff;
  box-shadow: 0 8px 20px -8px rgba(14, 165, 233, 0.65), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn--primary:hover {
  color: #fff;
  background: linear-gradient(135deg, #0284C7 0%, #075985 100%);
  box-shadow: 0 12px 26px -10px rgba(14, 165, 233, 0.7);
}
.btn--ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink-dim);
  box-shadow: none;
}
.btn--ghost:hover {
  color: var(--ink);
  border-color: var(--ink-dim);
  background: rgba(11, 34, 64, 0.04);
}
.btn--sm { padding: 6px 10px; font-size: 11px; }
.btn-icon { font-weight: 700; font-size: 16px; line-height: 1; }