.mega-fch{margin:26px 0;padding:24px;border:1px solid #bed7ef;border-radius:16px;background:linear-gradient(135deg,#071b33,#104775);color:#fff}.mega-fch-head span{font:700 11px ui-monospace,monospace;letter-spacing:.15em;color:#6ed3ff}.mega-fch-head h3{margin:7px 0;font-size:22px}.mega-fch-head p{margin:0;color:#bdd8ed;font-size:12px}.mega-fch-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;margin-top:20px}.mega-fch-chart{padding:16px;border:1px solid rgba(150,213,255,.28);border-radius:12px;background:#061424}.mega-fch-chart b{font-size:13px}.mega-fch-chart svg{display:block;width:100%;height:190px}.mega-fch-band{stroke:#ffbd76;stroke-width:var(--band,12px);opacity:.35}.mega-fch-trace{fill:none;stroke:#4fd1ff;stroke-width:5;transform-origin:center;transition:transform .2s}.mega-fch-chart small{color:#b9d1e6;font-size:10px}.mega-fch-controls{display:grid;gap:12px}.mega-fch label{display:grid;gap:5px;color:#cbe1f1;font-size:13px}.mega-fch output{font-weight:700;color:#fff;font-size:17px}.mega-fch input{width:100%;accent-color:#38bdf8}.mega-fch-result{padding:14px;border:1px solid rgba(153,217,255,.32);border-radius:10px;background:rgba(1,12,27,.32)}.mega-fch-result span{font-size:10px;letter-spacing:.1em;color:#86caee}.mega-fch-result strong{display:block;margin-top:6px;font-size:15px;line-height:1.35}.mega-fch-result p{margin:7px 0 0;color:#bdd7ea;font-size:12px;line-height:1.45}@media(max-width:700px){.mega-fch{padding:18px}.mega-fch-grid{grid-template-columns:1fr}}