:root {
  --bg: #040816; --card: #0d1528; --line: rgba(255,255,255,0.08);
  --text: #ffffff; --muted: rgba(255,255,255,0.6);
  --blue: #3b82f6; --cyan: #22d3ee; --violet: #8b5cf6;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; background: var(--bg); color: var(--text); padding-top: 80px; overflow-x: hidden; }
.system-grid-bg { position: fixed; inset: 0; background: linear-gradient(rgba(255,255,255,0.01) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.01) 1px, transparent 1px); background-size: 30px 30px; z-index: -1; mask-image: radial-gradient(circle, black, transparent); }
.sys-header { position: fixed; top: 0; width: 100%; display: flex; justify-content: space-between; padding: 20px 4%; border-bottom: 1px solid var(--line); background: rgba(4,8,22,0.8); backdrop-filter: blur(10px); z-index: 99; }
.sys-exit { color: var(--cyan); text-decoration: none; font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; }
.sys-container { width: min(1200px, 92%); margin: auto; display: flex; flex-direction: column; gap: 30px; padding-bottom: 60px; }
.sys-panel { background: var(--card); border: 1px solid var(--line); padding: 40px; border-radius: 24px; position: relative; }
.card-alt { background: #070b14; border-color: rgba(34,211,238,0.15); }
.panel-tag { font-size: 0.68rem; font-weight: 700; letter-spacing: 0.15em; color: var(--cyan); margin-bottom: 15px; }
.panel-desc { color: var(--muted); margin-top: 10px; max-width: 600px; }
.metric-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.m-card { background: rgba(255,255,255,0.02); border: 1px solid var(--line); padding: 24px; border-radius: 16px; }
.m-card small { display: block; font-size: 0.65rem; color: var(--muted); letter-spacing: 0.1em; }
.m-val { font-size: 2rem; font-weight: 900; display: block; margin-top: 5px; }
.text-cyan { color: var(--cyan); }.text-violet { color: var(--violet); }
.terminal-box { font-family: monospace; font-size: 0.85rem; color: #a5b4fc; height: 180px; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; }
.term-line { opacity: 0.85; }
@media(max-width: 768px) { .metric-row { grid-template-columns: 1fr; } }