body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
    .nav-active { color: rgb(220,38,38); border-bottom: 2px solid rgb(220,38,38); }
    .glass-card { background: rgba(15, 23, 42, 0.85); border: 1px solid rgba(255, 255, 255, 0.08); backdrop-filter: blur(12px); }