*{box-sizing:border-box;margin:0;padding:0}:root{--bg: #060b18;--bg2: #0d1530;--surface: rgba(255, 255, 255, .06);--surface2: rgba(255, 255, 255, .1);--border: rgba(255, 255, 255, .12);--text: #f4f7ff;--muted: #94a3c4;--accent: #22d3ee;--accent2: #a78bfa;--glow: rgba(34, 211, 238, .35);--success: #34d399;--radius: 16px;--font: system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--display: system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif}body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;overflow-x:hidden}.mesh-bg{position:fixed;top:0;right:0;bottom:0;left:0;z-index:0;background:radial-gradient(ellipse 80% 50% at 20% 20%,rgba(167,139,250,.25),transparent),radial-gradient(ellipse 60% 40% at 80% 10%,rgba(34,211,238,.2),transparent),radial-gradient(ellipse 50% 60% at 50% 100%,rgba(59,130,246,.15),transparent),var(--bg);pointer-events:none}.grid-floor{position:fixed;bottom:-20%;left:-50%;width:200%;height:60%;background:linear-gradient(transparent 0%,#22d3ee08),repeating-linear-gradient(90deg,transparent,transparent 79px,rgba(255,255,255,.03) 79px,rgba(255,255,255,.03) 80px),repeating-linear-gradient(0deg,transparent,transparent 79px,rgba(255,255,255,.03) 79px,rgba(255,255,255,.03) 80px);transform:perspective(500px) rotateX(72deg);transform-origin:center top;pointer-events:none;z-index:0}.app-wrap{position:relative;z-index:1;min-height:100vh}.scene-3d{perspective:900px;width:200px;height:200px;margin:0 auto}.building-3d{width:100%;height:100%;position:relative;transform-style:preserve-3d;animation:floatBuilding 6s ease-in-out infinite}@keyframes floatBuilding{0%,to{transform:rotateY(-18deg) rotateX(8deg) translateY(0)}50%{transform:rotateY(18deg) rotateX(6deg) translateY(-12px)}}.building-face{position:absolute;background:linear-gradient(135deg,#22d3ee66,#a78bfa4d);border:1px solid rgba(255,255,255,.2);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:0 0 40px var(--glow)}.building-face.front{width:120px;height:160px;transform:translateZ(60px);left:40px;top:20px;border-radius:8px 8px 4px 4px}.building-face.back{width:120px;height:160px;transform:rotateY(180deg) translateZ(60px);left:40px;top:20px;opacity:.5}.building-face.right{width:120px;height:160px;transform:rotateY(90deg) translateZ(100px);left:40px;top:20px;opacity:.7}.building-face.left{width:120px;height:160px;transform:rotateY(-90deg) translateZ(20px);left:40px;top:20px;opacity:.7}.building-face.top{width:120px;height:120px;transform:rotateX(90deg) translateZ(160px);left:40px;top:20px;background:linear-gradient(135deg,var(--accent),var(--accent2))}.glass{background:var(--surface);border:1px solid var(--border);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:var(--radius);box-shadow:0 8px 32px #0006}.card-3d{transform-style:preserve-3d;transition:transform .4s ease,box-shadow .4s ease}.card-3d:hover{transform:translateY(-8px) rotateX(4deg) rotateY(-2deg);box-shadow:0 24px 48px #22d3ee26,0 0 0 1px var(--border)}.btn-primary{background:linear-gradient(135deg,var(--accent),#3b82f6);color:#041018;border:none;border-radius:12px;padding:14px 28px;font-weight:700;font-size:15px;cursor:pointer;box-shadow:0 4px 24px var(--glow);transition:transform .2s,box-shadow .2s}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 32px var(--glow)}.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text);border-radius:12px;padding:10px 18px;cursor:pointer;font-weight:600}.inp{width:100%;background:#00000059;border:1px solid var(--border);border-radius:10px;padding:12px 14px;color:var(--text);font-size:16px}.inp:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--glow)}.display{font-family:var(--display);font-weight:800;letter-spacing:-.02em}.badge-sys{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);border:1px solid rgba(34,211,238,.4);padding:6px 12px;border-radius:999px;background:#22d3ee14}.step-dot{width:10px;height:10px;border-radius:50%;background:var(--border)}.step-dot.active{background:var(--accent);box-shadow:0 0 12px var(--glow)}@media (max-width: 768px){.scene-3d{width:140px;height:140px}.building-face.front,.building-face.back,.building-face.right,.building-face.left{width:90px;height:120px;left:25px}.building-face.top{width:90px;height:90px}}