.signal-shell{max-width:1040px;margin:auto;padding:32px 20px 60px;color:#263248}.signal-shell>header{margin:12px 0 28px}.signal-shell h1{font-size:clamp(2.5rem,7vw,4.5rem);margin:10px 0}.signal-shell [hidden]{display:none!important}.signal-panel{background:#edf4fb;border:1px solid #bfd3e6;border-radius:24px;padding:24px}.signal-toolbar{display:flex;align-items:center;gap:18px;flex-wrap:wrap}.signal-toolbar label{margin-left:auto;font-size:.9rem}.signal-toolbar input{width:20px;height:20px;vertical-align:middle}.signal-toolbar #signal-clock{font:700 1.4rem monospace}.signal-panel #signal-message{min-height:3em;font-weight:650;line-height:1.6}.signal-stage{display:grid;grid-template-columns:1.15fr .85fr;gap:18px;align-items:stretch}.signal-rule,.signal-card{border-radius:18px;padding:22px;text-align:center}.signal-rule{background:#17324d;color:#fff;display:flex;flex-direction:column;justify-content:center}.signal-rule small,.signal-rule span{display:block}.signal-rule strong{font-size:clamp(1.35rem,4vw,2rem);margin:10px 0}.signal-rule span{color:#ffdc83;font-weight:750}.signal-card{min-height:190px;background:#fff;border:3px solid #4f7191;display:grid;grid-template-columns:1fr 1fr;align-items:center}.signal-card span{font-size:5rem;color:#c06b17}.signal-card strong{font-size:5rem}.signal-card small{grid-column:1/-1;font-weight:700}.signal-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:16px 0}.signal-stats div{background:#fff;border-radius:12px;padding:10px;text-align:center}.signal-stats small,.signal-stats strong{display:block}.signal-stats strong{font-size:1.45rem}.signal-choices{display:grid;grid-template-columns:1fr 1fr;gap:14px}.signal-choice{min-height:92px;border:2px solid #315f82;border-radius:16px;background:#fff;color:#17324d;font:inherit;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:14px}.signal-choice span{font-size:2rem}.signal-choice strong{font-size:1.25rem}.signal-choice small{font-size:.8rem}.signal-choice:hover:not(:disabled){background:#dcecf8}.signal-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.signal-shell button:focus-visible,.signal-shell input:focus-visible{outline:3px solid #a04e00;outline-offset:4px}.signal-shell button:disabled{cursor:default;opacity:.5}.signal-help{background:white;border:1px solid #d8e2eb;border-radius:20px;padding:24px;margin-top:24px;line-height:1.85}.signal-help h2{font-size:1.25rem}.signal-help ol{padding-left:1.5em}.signal-help li{margin:8px 0}@media(max-width:620px){.signal-shell{padding:22px 12px 40px}.signal-panel{padding:16px 12px}.signal-toolbar label{margin-left:0;width:100%}.signal-stage{grid-template-columns:1fr}.signal-rule{padding:16px}.signal-card{min-height:145px;padding:14px}.signal-card span,.signal-card strong{font-size:3.8rem}.signal-choice{min-height:86px;gap:8px}.signal-choice strong{font-size:1.1rem}.signal-help{padding:18px}}