.splash{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;display:flex;align-items:center;justify-content:center;background:#6b66f2;color:#fff;opacity:1;transition:opacity .4s ease}.splash--leaving{opacity:0}.splash-content{display:flex;flex-direction:column;align-items:center;gap:20px;animation:splash-rise .7s cubic-bezier(.22,1,.36,1) both}.splash-icon{width:96px;height:96px;display:flex;align-items:center;justify-content:center;animation:splash-bob 1.8s ease-in-out .5s infinite}.splash-icon .material-symbols-outlined{font-family:Material Symbols Outlined;font-size:80px;line-height:1;color:#fff;font-variation-settings:"FILL" 1,"wght" 500,"GRAD" 0,"opsz" 48;-webkit-user-select:none;-moz-user-select:none;user-select:none}.splash-title{font-size:24px;font-weight:800;letter-spacing:-.02em;color:#fff}@keyframes splash-bob{0%,to{transform:translateY(0)}50%{transform:translateY(8px)}}@keyframes splash-rise{0%{opacity:0;transform:translateY(16px) 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16px;display:flex;flex-direction:column;gap:14px;min-height:0}.intro{font-size:13px;color:var(--text-secondary);line-height:1.6}.layout{display:grid;grid-template-columns:300px 1fr;gap:14px;align-items:start}.col-left,.col-right{display:flex;flex-direction:column;gap:14px;min-width:0}.selected-device{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--accent-green);background:var(--glow-green);border:1px solid rgba(22,163,74,.2);border-radius:5px;padding:10px 14px}.selected-device .material-symbols-outlined{font-family:Material Symbols Outlined;font-size:18px;line-height:1}.dfu-guide{background:var(--glow-blue);border:1px solid rgba(59,130,246,.2);border-radius:5px;padding:12px 14px;display:flex;flex-direction:column;gap:6px}.dfu-guide-title{display:flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--accent-blue)}.dfu-guide-title .material-symbols-outlined{font-family:Material Symbols 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Mono,monospace;font-size:11px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.1em}.header-status{display:flex;align-items:center;gap:10px}.app-version{font-family:JetBrains Mono,monospace;font-size:11px;font-weight:500;color:var(--text-muted);letter-spacing:.04em}.connection-badge{display:flex;align-items:center;gap:8px;padding:7px 14px;border-radius:var(--radius-pill);font-size:13px;font-weight:600;background:var(--bg-card);border:1px solid var(--border-color);box-shadow:var(--shadow-xs)}.connection-badge.connected{color:var(--accent-green);background:var(--glow-green);border-color:#16a34a33}.connection-badge.disconnected{color:var(--text-secondary)}.status-dot{width:7px;height:7px;border-radius:50%;background:currentColor}.connected .status-dot{box-shadow:0 0 0 3px #16a34a33;animation:pulse 2s ease-in-out infinite}.disconnected .status-dot{background:var(--text-muted)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.panel{background:var(--bg-card);border:1px solid var(--border-color);border-radius:5px;box-shadow:var(--shadow-sm);overflow:hidden}.panel-header{padding:10px 18px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border-color)}.panel-header h2{font-size:15px;font-weight:700;letter-spacing:-.01em;color:var(--text-primary)}.panel-body{padding:14px 18px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border-radius:var(--radius-sm);border:1px solid transparent;font-family:inherit;font-size:14px;font-weight:600;cursor:pointer;transition:all .15s ease;letter-spacing:-.01em}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-upload{background:#4285f4;color:#fff;width:100%;padding:14px 24px;font-size:15px;box-shadow:0 4px 12px #4285f44d}.btn-upload:hover:not(:disabled){background:#2b6cd4;box-shadow:0 6px 20px #4285f466;transform:translateY(-1px)}.btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid 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var(--border-color);border-radius:5px;cursor:pointer;transition:all .15s;background:var(--bg-card)}.version-card:hover{border-color:var(--border-strong);background:var(--bg-card-hover);box-shadow:var(--shadow-xs)}.version-card.selected{border-color:#4285f4;background:#4285f41a;box-shadow:0 0 0 3px #4285f426}.version-card-top{display:flex;align-items:center;justify-content:space-between;gap:10px}.version-info{display:flex;align-items:center;gap:10px}.version-number{font-size:15px;font-weight:700;color:var(--text-primary);letter-spacing:-.01em}.version-tag{display:inline-block;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;padding:3px 8px;border-radius:var(--radius-pill)}.tag-stable{background:var(--glow-green);color:var(--accent-green)}.tag-beta{background:var(--glow-amber);color:var(--accent-amber)}.tag-legacy{background:#c4b5fd40;color:var(--accent-purple)}.version-file{font-size:12px;color:var(--text-muted);font-family:JetBrains Mono,monospace;font-weight:500}.version-desc{font-size:13px;color:var(--text-secondary);margin-top:6px;line-height:1.5}.version-changelog{margin-top:12px;padding-top:12px;border-top:1px solid var(--border-color)}.changelog-title{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:6px}.version-changelog ul{list-style:none;padding:0}.version-changelog li{font-size:12px;color:var(--text-secondary);padding:3px 0 3px 16px;position:relative;line-height:1.5}.version-changelog li:before{content:"";position:absolute;left:4px;top:10px;width:5px;height:5px;border-radius:50%;background:#4285f4}.upload-panel .panel-body{display:flex;flex-direction:column;gap:14px}.upload-hint{font-size:13px;color:var(--text-secondary);line-height:1.5}.progress-container{width:100%}.progress-header{display:flex;justify-content:space-between;margin-bottom:8px;font-size:13px;color:var(--text-secondary);font-weight:500}.progress-pct{font-family:JetBrains 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.btn-ghost{color:#fff9;border-color:#ffffff1f}.log-panel .btn-ghost:hover{color:#fff;background:#ffffff0f;border-color:#ffffff40}.log-container{height:220px;overflow-y:auto;padding:12px 18px;font-family:JetBrains Mono,monospace;font-size:12px;line-height:1.7}.log-empty{color:#fff6;text-align:center;padding:40px 0;font-size:13px;font-family:Inter,sans-serif}.log-entry{display:flex;align-items:baseline;gap:8px;padding:1px 0}.log-badge{font-size:9px;font-weight:700;padding:2px 6px;border-radius:3px;text-transform:uppercase;letter-spacing:.05em;flex-shrink:0;min-width:40px;text-align:center}.log-info .log-badge{background:#6ea8ff33;color:#93b8ff}.log-error .log-badge{background:#ef444433;color:#f87171}.log-msg{color:#ffffffc7;word-break:break-all}.log-error .log-msg{color:#f87171}.unsupported-banner{max-width:480px;margin:120px auto;text-align:center;padding:48px 36px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:5px;box-shadow:var(--shadow-md)}.unsupported-banner h2{font-size:22px;font-weight:700;margin-bottom:12px;letter-spacing:-.02em}.unsupported-banner p{font-size:14px;color:var(--text-secondary);line-height:1.6}@media (max-width: 820px){.header-inner{padding:12px 16px}.main{padding:16px}.logo h1{font-size:15px}.logo-sub{font-size:10px}.version-list{max-height:none}.layout{grid-template-columns:1fr}}:root{--bg-primary: #f7f7f9;--bg-secondary: #f1f1f4;--bg-card: #ffffff;--bg-card-hover: #fafafa;--border-color: #ececf0;--border-strong: #d4d4d8;--text-primary: #18181b;--text-secondary: #52525b;--text-muted: #a1a1aa;--accent-primary: #f87171;--accent-primary-light: #fca5a5;--accent-primary-dark: #ef4444;--accent-blue: #3b82f6;--accent-green: #16a34a;--accent-amber: #fdba74;--accent-red: #ef4444;--accent-purple: #c4b5fd;--glow-primary: rgba(248, 113, 113, .1);--glow-green: rgba(22, 163, 74, .1);--glow-red: rgba(239, 68, 68, .08);--glow-amber: rgba(253, 186, 116, .15);--glow-blue: rgba(59, 130, 246, .1);--shadow-xs: 0 1px 2px rgba(17, 17, 17, .04);--shadow-sm: 0 2px 6px rgba(17, 17, 17, .05), 0 1px 2px rgba(17, 17, 17, .04);--shadow-md: 0 6px 20px rgba(17, 17, 17, .06), 0 2px 6px rgba(17, 17, 17, .04);--radius-sm: 8px;--radius-md: 12px;--radius-pill: 999px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;overflow-x:hidden;-webkit-font-smoothing:antialiased;letter-spacing:-.01em}#root{min-height:100vh;display:flex;flex-direction:column}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}::-moz-selection{background:#4285f440;color:var(--text-primary)}::selection{background:#4285f440;color:var(--text-primary)}