*{box-sizing:border-box}body{color:#e6edf3;background:#0f1419;min-height:100vh;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}#root{min-height:100vh}.app{max-width:820px;margin:0 auto;padding:32px 20px 60px}.app-header{text-align:center;margin-bottom:32px}.app-header h1{letter-spacing:-.02em;margin:0 0 8px;font-size:28px;font-weight:700}.app-header .subtitle{color:#8b949e;margin:0;font-size:14px}.app-main{flex-direction:column;gap:20px;display:flex}.panel{background:#161b22;border:1px solid #30363d;border-radius:10px;padding:24px}.panel h2{margin:0 0 8px;font-size:18px;font-weight:600}.panel .desc{color:#8b949e;margin:0 0 16px;font-size:14px}.btn{color:#e6edf3;cursor:pointer;background:#21262d;border:1px solid #30363d;border-radius:8px;padding:10px 18px;font-size:14px;font-weight:500;transition:all .15s;display:inline-block}.btn:hover:not(:disabled){background:#30363d;border-color:#8b949e}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{color:#fff;background:#238636;border-color:#2ea043}.btn-primary:hover:not(:disabled){background:#2ea043;border-color:#3fb950}.btn-secondary{background:0 0}.btn-sm{padding:6px 12px;font-size:13px}.btn-large{width:100%;padding:14px 24px;font-size:16px}.icon{vertical-align:middle;flex-shrink:0}.success{color:#3fb950;align-items:center;gap:6px;font-weight:500;display:inline-flex}.error{color:#ffa198;background:#41151a;border:1px solid #f85149;border-radius:6px;align-items:flex-start;gap:8px;margin-top:12px;padding:12px;font-size:14px;display:flex}.error .icon{margin-top:1px}.warning{color:#e3b341;background:#2a1f05;border:1px solid #d29922;border-radius:6px;align-items:center;gap:8px;margin-top:16px;padding:10px 12px;font-size:14px;display:flex}.hint{color:#8b949e;margin-top:10px;font-size:13px;font-style:italic}.success-panel{color:#3fb950;background:#0d2818;border:1px solid #238636;border-radius:6px;align-items:center;gap:10px;margin-top:16px;padding:16px;font-size:15px;font-weight:500;line-height:1.5;display:flex}.connected-info dl{grid-template-columns:80px 1fr;gap:6px 12px;margin:12px 0 16px;font-size:14px;display:grid}.connected-info dt{color:#8b949e}.connected-info dd{margin:0;font-family:ui-monospace,monospace}.mode-switch{grid-template-columns:1fr 1fr;gap:10px;margin-bottom:20px;display:grid}.mode-switch label{cursor:pointer;background:#0d1117;border:1px solid #30363d;border-radius:8px;align-items:center;gap:10px;padding:12px 14px;transition:all .15s;display:flex}.mode-switch label:hover{border-color:#8b949e}.mode-switch label.active{background:#0d2818;border-color:#3fb950}.mode-switch input[type=radio]{accent-color:#3fb950;margin:0}.mode-label{flex:1}.mode-title{color:#e6edf3;font-size:14px;font-weight:600}.mode-desc{color:#8b949e;margin-top:2px;font-size:12px}.firmware-table{border-collapse:collapse;width:100%;font-size:14px}.firmware-table th,.firmware-table td{text-align:left;border-bottom:1px solid #21262d;padding:12px 10px}.firmware-table th{color:#8b949e;text-transform:uppercase;letter-spacing:.05em;font-size:12px;font-weight:600}.firmware-table code{background:#0d1117;border-radius:4px;padding:2px 6px;font-family:ui-monospace,monospace;font-size:13px}.slot-label{font-family:ui-monospace,monospace;font-size:13px}.slot-desc{color:#8b949e;margin-top:2px;font-size:12px}.slot-filename{color:#3fb950;align-items:center;gap:4px;margin-top:4px;font-size:12px;display:inline-flex}.slot-filename.warn{color:#e3b341}.file-label{cursor:pointer}.options{margin-bottom:16px}.options label{cursor:pointer;align-items:center;gap:8px;font-size:14px;display:flex}.option-desc{color:#8b949e;margin-left:4px;font-size:13px}.progress-list{flex-direction:column;gap:14px;margin-top:20px;display:flex}.progress-item{font-size:13px}.progress-header{align-items:center;gap:10px;margin-bottom:6px;display:flex}.progress-header code{background:#0d1117;border-radius:4px;padding:2px 6px;font-size:12px}.progress-label{color:#8b949e;flex:1;font-family:ui-monospace,monospace;font-size:12px}.progress-bar-wrapper{background:#0d1117;border:1px solid #30363d;border-radius:4px;height:8px;overflow:hidden}.progress-bar{background:linear-gradient(90deg,#238636,#3fb950);height:100%;transition:width .2s}.progress-text{color:#8b949e;margin-top:4px;font-family:ui-monospace,monospace;font-size:12px}.log-area{background:#0d1117;border:1px solid #30363d;border-radius:6px;margin-top:16px;overflow:hidden}.log-header{color:#8b949e;text-transform:uppercase;letter-spacing:.05em;background:#161b22;border-bottom:1px solid #30363d;padding:8px 12px;font-size:12px;font-weight:600}.log-content{max-height:240px;padding:10px 12px;font-family:ui-monospace,Consolas,monospace;font-size:12px;line-height:1.5;overflow-y:auto}.log-line{color:#c9d1d9;word-break:break-all;gap:10px;padding:2px 0;display:flex}.log-time{color:#6e7681;flex-shrink:0}.boot-guide{background:#0d1117;border:1px solid #30363d;border-radius:8px;margin-bottom:16px;padding:14px 16px}.boot-guide-title{color:#e6edf3;margin-bottom:10px;font-size:14px;font-weight:700}.boot-steps{color:#c9d1d9;margin:0 0 12px;padding-left:22px;font-size:13px;line-height:1.7}.boot-steps li{margin:4px 0}.boot-steps b{color:#e6edf3}.boot-warning{color:#ffd9b3;background:#2d1b14;border:1px solid #6c3a25;border-radius:6px;align-items:flex-start;gap:8px;padding:10px 12px;font-size:12.5px;line-height:1.6;display:flex}.boot-warning .icon{color:#ffb380;margin-top:2px}.boot-warning b{color:#ffb380}.boot-video-link,.boot-video-placeholder{align-items:center;gap:6px;margin-top:10px;font-size:13px;display:inline-flex}.boot-video-link{color:#58a6ff;font-weight:600;text-decoration:none}.boot-video-link:hover{text-decoration:underline}.boot-video-placeholder{color:#6e7681;font-style:italic}.modal-overlay{z-index:1000;background:#000000b3;justify-content:center;align-items:center;animation:.2s ease-out fadeIn;display:flex;position:fixed;inset:0}.modal-content{text-align:center;background:#161b22;border:1px solid #30363d;border-radius:12px;width:calc(100% - 40px);max-width:440px;padding:32px 28px;animation:.25s cubic-bezier(.34,1.56,.64,1) popIn;box-shadow:0 20px 60px #00000080}.modal-icon{justify-content:center;margin-bottom:12px;display:flex}.modal-icon-success{color:#3fb950}.modal-icon-warning{color:#ffd965}.modal-title{color:#56d364;letter-spacing:-.01em;margin:0 0 12px;font-size:22px;font-weight:700}.modal-filename{color:#8b949e;word-break:break-all;margin:0 0 16px;font-family:ui-monospace,Consolas,monospace;font-size:12px}.modal-desc{color:#c9d1d9;margin:0 0 24px;font-size:14px;line-height:1.6}.modal-content .btn{min-width:120px}.modal-confirm{max-width:480px}.modal-title-confirm{color:#ffd965;letter-spacing:-.01em;margin:0 0 14px;font-size:20px;font-weight:700}.confirm-summary{text-align:left;background:#0d1117;border:1px solid #30363d;border-radius:8px;margin:18px 0;padding:14px 16px}.confirm-row{justify-content:space-between;align-items:center;gap:12px;padding:6px 0;display:flex}.confirm-row+.confirm-row{border-top:1px solid #21262d}.confirm-label{color:#8b949e;font-size:13px}.confirm-value{color:#e6edf3;font-size:14px;font-weight:600}.confirm-filename{text-align:right;word-break:break-all;font-family:ui-monospace,Consolas,monospace;font-size:12px}.confirm-mismatch{color:#ffb3b3;background:#2d1117;border:1px solid #8b3a3a;border-radius:6px;align-items:flex-start;gap:8px;margin-bottom:14px;padding:10px 12px;font-size:13px;line-height:1.5;display:flex}.confirm-mismatch .icon{color:#ff6b6b;margin-top:1px}.confirm-mismatch b{color:#ff6b6b}.modal-buttons{justify-content:center;gap:10px;margin-top:20px;display:flex}.btn-danger{color:#fff;background:#b62324;border:0}.btn-danger:hover{background:#d32f2f}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes popIn{0%{opacity:0;transform:scale(.92)translateY(-8px)}to{opacity:1;transform:scale(1)translateY(0)}}.device-tabs{background:#161b22;border:1px solid #30363d;border-radius:8px;gap:8px;margin-bottom:20px;padding:6px;display:flex}.device-tab{color:#8b949e;cursor:pointer;background:0 0;border:0;border-radius:6px;flex:1;justify-content:center;align-items:center;gap:8px;padding:10px 16px;font-size:14px;font-weight:600;transition:background .15s,color .15s;display:flex}.device-tab:hover{color:#e6edf3}.device-tab.active{color:#fff;background:#1f6feb}.history-body{border-top:1px solid #21262d}.history-actions{justify-content:flex-end;gap:8px;padding:10px 14px 14px;display:flex}.history-actions .btn{align-items:center;gap:6px;display:inline-flex}.btn-ghost{color:#e6edf3;background:#21262d;border:1px solid #484f58;align-items:center;font-weight:600;text-decoration:none;display:inline-flex}.btn-ghost:hover{background:#30363d;border-color:#6e7681}.firmware-history{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.history-entry{background:#0d1117;border:1px solid #30363d;border-radius:6px;overflow:hidden}.history-header{width:100%;color:inherit;font:inherit;text-align:left;cursor:pointer;background:0 0;border:0;align-items:center;gap:12px;padding:12px 14px;display:flex}.history-header:hover{background:#161b22}.history-date{color:#e6edf3;font-family:ui-monospace,Consolas,monospace;font-size:13px;font-weight:600}.history-filename{color:#8b949e;text-overflow:ellipsis;white-space:nowrap;flex:1;font-family:ui-monospace,Consolas,monospace;font-size:12px;overflow:hidden}.history-toggle{color:#6e7681;flex-shrink:0;align-items:center;display:inline-flex}.badge-latest{color:#fff;background:#1f6feb;border-radius:999px;flex-shrink:0;padding:2px 8px;font-size:11px;font-weight:600;display:inline-block}.history-changes{color:#c9d1d9;margin:0;padding:12px 18px 8px 36px;font-size:13px;line-height:1.6;list-style:outside}.history-changes li{margin:4px 0}.app-footer{text-align:center;color:#6e7681;margin-top:40px;font-size:12px}