*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:#070d1a;color:#e8edf8;min-height:100vh}.app{max-width:960px;margin:0 auto;padding:24px 20px}header{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;flex-wrap:wrap;gap:16px}.logo{width:420px;height:230px;object-fit:cover;object-position:top center;border-radius:8px;display:block}.tagline{display:none}.header-right{display:flex;gap:10px;align-items:center}.start-wrap{position:relative;display:flex;flex-direction:column;align-items:center}.click-hint{position:absolute;bottom:calc(100% + 6px);left:50%;transform:translate(-50%);display:flex;flex-direction:column;align-items:center;pointer-events:none;animation:hint-bounce .6s ease-in-out infinite alternate;white-space:nowrap}.click-hint.hidden{display:none}.click-hint-text{font-size:1.6rem;font-weight:900;color:#ff2020;text-shadow:0 0 12px rgba(255,30,30,.7),2px 2px 0 #800000;letter-spacing:2px}.click-hint-arrow{font-size:3rem;font-weight:900;color:#ff2020;text-shadow:0 0 10px rgba(255,30,30,.7),1px 1px 0 #800000,-1px -1px 0 #800000;line-height:1;-webkit-text-stroke:1.5px #CC0000}@keyframes hint-bounce{0%{transform:translate(-50%) translateY(-6px)}to{transform:translate(-50%) translateY(2px)}}.btn-primary{background:#1a4aab;color:#fff;border:none;padding:10px 20px;border-radius:8px;font-size:.9rem;font-weight:600;cursor:pointer;transition:background .15s}.btn-primary:hover{background:#153d90}.btn-primary.active{background:#e05252}.btn-primary.active:hover{background:#c43e3e}.btn-secondary{background:#0e1c38;color:#6a8fc0;border:1px solid #1a3060;padding:10px 16px;border-radius:8px;font-size:.9rem;cursor:pointer;transition:background .15s,color .15s}.btn-secondary:hover{background:#162b54;color:#e8edf8}.btn-secondary.muted{color:#666}main{display:flex;flex-direction:column;gap:20px}.video-wrapper{position:relative;width:100%;border-radius:16px;overflow:hidden;background:#0e1c38;aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;border:1px solid #1a3060}video{width:100%;height:100%;object-fit:cover;transform:scaleX(-1);display:block}.status{position:absolute;top:14px;left:14px;padding:6px 14px;border-radius:20px;font-size:.8rem;font-weight:600;letter-spacing:.3px}.status.idle{background:#ffffff14;color:#888}.status.monitoring{background:#1a4aab4d;color:#7aabff}.status.detected{background:#ffb43233;color:#ffb432;animation:pulse-yellow .6s ease-in-out infinite alternate}.status.alert{background:#dc505040;color:#ff7070}@keyframes pulse-yellow{0%{background:#ffb43226}to{background:#ffb43259}}.alert-banner{background:#3b1a1a;border:1px solid #6b2f2f;color:#ff8080;text-align:center;padding:16px;border-radius:10px;font-size:1rem;font-weight:600;animation:shake .3s ease-in-out}.alert-banner.hidden{display:none}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-6px)}40%{transform:translate(6px)}60%{transform:translate(-4px)}80%{transform:translate(4px)}}#climber-canvas{width:100%;aspect-ratio:960 / 380;border-radius:16px;display:block;border:1px solid #1a3060}.stats{display:flex;gap:16px}.stat{flex:1;background:#0e1c38;border:1px solid #1a3060;border-radius:10px;padding:16px 20px;text-align:center}.stat span{display:block;font-size:1.8rem;font-weight:700;color:#fff}.stat label{font-size:.8rem;color:#666;margin-top:4px;display:block}.modal{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000bf;display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}.modal.hidden{display:none}.modal-box{background:#0e1c38;border-radius:16px;padding:32px;max-width:420px;width:100%;text-align:center;border:1px solid #1a3060}.modal-logo{height:80px;width:auto;margin:0 auto 20px;display:block}.modal-box h2{font-size:1.3rem;margin-bottom:12px;color:#fff}.modal-box p{color:#888;font-size:.9rem;line-height:1.6;margin-bottom:24px}.loading-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000c;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;z-index:200}.loading-overlay.hidden{display:none}.loading-overlay p{color:#aaa;font-size:.95rem}.spinner{width:40px;height:40px;border:3px solid #2e2e38;border-top-color:#1a4aab;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}