/* Stage451 · launch assurance, complete navigation, performance polish */
:root{--q451-bg:#020916;--q451-panel:rgba(5,18,34,.88);--q451-line:rgba(92,210,255,.22);--q451-gold:#f5c84b;--q451-green:#26f0a2;--q451-blue:#55d8ff;--q451-text:#edf7ff;--q451-muted:#9fb3c7;--q451-danger:#ff5f64}.q451-launch-strip{margin:22px 0;border:1px solid rgba(245,200,75,.24);border-radius:22px;background:linear-gradient(135deg,rgba(245,200,75,.1),rgba(23,240,162,.05),rgba(85,216,255,.05));box-shadow:0 24px 80px rgba(0,0,0,.28),inset 0 0 46px rgba(245,200,75,.04);padding:18px;display:grid;grid-template-columns:1.3fr 2fr;gap:16px;position:relative;overflow:hidden}.q451-launch-strip:before{content:"";position:absolute;inset:-30%;background:radial-gradient(circle at 18% 20%,rgba(245,200,75,.18),transparent 24%),radial-gradient(circle at 82% 60%,rgba(38,240,162,.12),transparent 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rgba(255,255,255,.18);background:transparent;color:#dff7ff;border-radius:12px;padding:8px 12px}.q451-progress{height:8px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden;margin:12px 0}.q451-progress i{display:block;height:100%;width:94%;background:linear-gradient(90deg,var(--q451-blue),var(--q451-green),var(--q451-gold));animation:q451Bar 5s ease-in-out infinite}@keyframes q451Bar{50%{width:82%}}@media (max-width:900px){.q451-launch-strip,.q451-hero,.q451-grid.cols-4,.q451-grid.cols-3,.q451-grid.cols-2{grid-template-columns:1fr}.q451-mini-grid{grid-template-columns:1fr}.q451-head{display:block}.q451-terminal-pro{position:static;margin:18px}.q451-page header{align-items:flex-start;gap:16px;flex-direction:column}.q451-page nav{width:100%}.q451-page nav a{flex:1 1 130px}}