/* ── Split-Screen Race (hero-3) ──────────────────── */
        .race-container {
            width: 1200px;
            max-width: 96vw;
            display: flex;
            gap: 24px;
            padding: 32px 0;
            position: relative;
            margin: 2rem auto 0;
        }
        .race-panel {
            flex: 1;
            border-radius: 16px;
            overflow: hidden;
            position: relative;
            display: flex;
            flex-direction: column;
            height: 520px;
        }
        .race-panel-label {
            text-align: center;
            padding: 16px 0 12px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            flex-shrink: 0;
        }
        .race-panel-left .race-panel-label {
            color: #ff6b6b;
            background: linear-gradient(180deg, rgba(255,107,107,0.08) 0%, transparent 100%);
        }
        .race-panel-right .race-panel-label {
            color: #4ecdc4;
            background: linear-gradient(180deg, rgba(78,205,196,0.08) 0%, transparent 100%);
        }
        .race-panel-left {
            background: #12141f;
            border: 1px solid rgba(255,107,107,0.15);
        }
        .race-terminal {
            flex: 1;
            display: flex;
            flex-direction: column;
            overflow: hidden;
            position: relative;
        }
        .race-terminal-titlebar {
            background: #1a1d2e;
            padding: 10px 14px;
            display: flex;
            align-items: center;
            gap: 7px;
            border-bottom: 1px solid rgba(255,255,255,0.05);
            flex-shrink: 0;
        }
        .race-terminal-dot {
            width: 11px; height: 11px; border-radius: 50%;
        }
        .race-terminal-dot.red { background: #ff5f57; }
        .race-terminal-dot.yellow { background: #febc2e; }
        .race-terminal-dot.green { background: #28c840; }
        .race-terminal-titlebar span {
            flex: 1;
            text-align: center;
            font-size: 12px;
            color: #666;
            font-family: 'SF Mono', 'Menlo', 'Monaco', monospace;
        }
        .race-container { text-align: left; }
        .race-terminal-body {
            padding: 14px 16px;
            font-family: 'SF Mono', 'Menlo', 'Monaco', 'Consolas', monospace;
            font-size: 12.5px;
            line-height: 1.65;
            flex: 1;
            overflow-y: auto;
            overflow-x: hidden;
        }
        .race-terminal-body::-webkit-scrollbar { width: 6px; }
        .race-terminal-body::-webkit-scrollbar-track { background: transparent; }
        .race-terminal-body::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 3px; }
        .race-terminal-line {
            white-space: pre-wrap;
            word-break: break-all;
            opacity: 0;
            transition: opacity 0.15s;
        }
        .race-terminal-line.visible { opacity: 1; }
        .race-terminal-line .prompt { color: #4ecdc4; }
        .race-terminal-line .cmd { color: #e0e0e0; }
        .race-terminal-line .output { color: #888; }
        .race-terminal-line .error { color: #ff6b6b; }
        .race-terminal-line .success { color: #28c840; }
        .race-terminal-line .warning { color: #febc2e; }
        .race-cursor {
            display: inline-block;
            width: 7px;
            height: 15px;
            background: #4ecdc4;
            vertical-align: text-bottom;
            animation: race-blink 1s step-end infinite;
        }
        @keyframes race-blink {
            50% { opacity: 0; }
        }
        .race-timer {
            position: absolute;
            top: 6px;
            right: 14px;
            font-family: 'SF Mono', 'Menlo', monospace;
            font-size: 13px;
            padding: 4px 10px;
            border-radius: 6px;
            z-index: 5;
        }
        .race-timer-left {
            color: #ff6b6b;
            background: rgba(255,107,107,0.1);
            border: 1px solid rgba(255,107,107,0.2);
        }
        .race-timer-right {
            color: #4ecdc4;
            background: rgba(78,205,196,0.1);
            border: 1px solid rgba(78,205,196,0.2);
        }
        .race-macos-alert-overlay {
            position: absolute;
            inset: 0;
            background: rgba(0,0,0,0.55);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 10;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s;
        }
        .race-macos-alert-overlay.visible {
            opacity: 1;
            pointer-events: auto;
        }
        .race-macos-alert {
            background: linear-gradient(180deg, #3a3a3c 0%, #2c2c2e 100%);
            border-radius: 12px;
            padding: 20px 24px 16px;
            width: 320px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.6), 0 0 0 0.5px rgba(255,255,255,0.1);
            text-align: center;
        }
        .race-macos-alert-icon { font-size: 40px; margin-bottom: 10px; }
        .race-macos-alert-title {
            font-size: 13px;
            font-weight: 600;
            color: #fff;
            line-height: 1.45;
            margin-bottom: 14px;
        }
        .race-macos-alert-btn {
            background: #0a84ff;
            color: #fff;
            border: none;
            border-radius: 6px;
            padding: 6px 20px;
            font-size: 13px;
            font-weight: 500;
            cursor: default;
        }
        .race-panel-right {
            background: #12141f;
            border: 1px solid rgba(78,205,196,0.15);
        }
        .race-sm-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            padding: 16px 20px;
            overflow: hidden;
            position: relative;
        }
        .race-sm-step {
            opacity: 0;
            transform: translateY(6px);
            transition: opacity 0.4s ease, transform 0.4s ease;
            width: 100%;
            flex-shrink: 0;
        }
        .race-sm-step.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .race-sm-window {
            background: #1e2030;
            border-radius: 10px;
            border: 1px solid rgba(255,255,255,0.08);
            overflow: hidden;
        }
        .race-sm-window-titlebar {
            background: rgba(255,255,255,0.04);
            padding: 10px 14px;
            display: flex;
            align-items: center;
            gap: 7px;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .race-sm-window-titlebar .title {
            flex: 1;
            text-align: center;
            font-size: 13px;
            font-weight: 600;
            color: #ccc;
        }
        .race-sm-window-dot {
            width: 11px; height: 11px; border-radius: 50%;
        }
        .race-sm-window-dot.red { background: #ff5f57; }
        .race-sm-window-dot.yellow { background: #febc2e; }
        .race-sm-window-dot.green { background: #28c840; }
        .race-sm-window-body { padding: 16px; }
        .race-sm-address-field {
            background: rgba(0,0,0,0.3);
            border: 1.5px solid rgba(255,255,255,0.12);
            border-radius: 8px;
            padding: 10px 12px;
            font-family: 'SF Mono', 'Menlo', monospace;
            font-size: 14px;
            color: #fff;
            margin-bottom: 10px;
            min-height: 38px;
            display: flex;
            align-items: center;
        }
        .race-sm-address-field.focused {
            border-color: rgba(78,205,196,0.5);
            box-shadow: 0 0 0 2px rgba(78,205,196,0.15);
        }
        .race-sm-address-placeholder {
            color: #555;
            font-size: 13px;
            font-family: -apple-system, BlinkMacSystemFont, sans-serif;
        }
        .race-sm-typed-text { color: #fff; }
        .race-sm-field-cursor {
            display: inline-block;
            width: 1.5px;
            height: 16px;
            background: #4ecdc4;
            vertical-align: text-bottom;
            animation: race-blink 1s step-end infinite;
            margin-left: 1px;
        }
        .race-sm-autodetect-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 12px;
            font-size: 12px;
        }
        .race-sm-autodetect-label {
            color: #888;
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .race-sm-checkbox {
            width: 13px; height: 13px;
            border: 1.5px solid #4ecdc4;
            border-radius: 3px;
            background: rgba(78,205,196,0.15);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #4ecdc4;
            font-size: 9px;
            font-weight: bold;
        }
        .race-sm-detect-badge {
            font-size: 10px;
            font-weight: 600;
            padding: 2px 8px;
            border-radius: 10px;
        }
        .race-sm-detect-scanning {
            color: #5b9bf5;
            background: rgba(91,155,245,0.15);
        }
        .race-sm-detect-found {
            color: #28c840;
            background: rgba(40,200,64,0.15);
        }
        .race-sm-preview-card {
            border: 1.5px solid rgba(78,205,196,0.3);
            border-radius: 10px;
            background: rgba(78,205,196,0.04);
            overflow: hidden;
            margin-bottom: 12px;
        }
        .race-sm-preview-header {
            padding: 8px 12px;
            font-size: 10px;
            font-weight: 600;
            text-transform: uppercase;
            color: rgba(78,205,196,0.8);
            letter-spacing: 0.4px;
            border-bottom: 1px solid rgba(78,205,196,0.1);
        }
        .race-sm-chips {
            padding: 10px 12px;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .race-sm-chip {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 9px;
            border-radius: 6px;
            background: rgba(78,205,196,0.08);
            border: 1px solid rgba(78,205,196,0.18);
            font-size: 12px;
        }
        .race-sm-chip-key {
            font-size: 9px;
            font-weight: 700;
            text-transform: uppercase;
            color: rgba(78,205,196,0.8);
        }
        .race-sm-chip-val {
            font-family: 'SF Mono', 'Menlo', monospace;
            color: #ddd;
            font-size: 12px;
        }
        .race-sm-conn-status {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 6px 0;
            font-size: 12px;
            margin-bottom: 8px;
        }
        .race-sm-conn-status.testing { color: #888; }
        .race-sm-conn-status.success { color: #28c840; }
        .race-sm-spinner-small {
            width: 12px; height: 12px;
            border: 2px solid rgba(136,136,136,0.3);
            border-top-color: #888;
            border-radius: 50%;
            animation: race-spin 0.8s linear infinite;
        }
        @keyframes race-spin { to { transform: rotate(360deg); } }
        .race-sm-check-icon { font-size: 13px; }
        .race-sm-btn-row {
            display: flex;
            justify-content: flex-end;
            gap: 8px;
        }
        .race-sm-btn {
            padding: 6px 16px;
            border-radius: 6px;
            font-size: 13px;
            font-weight: 500;
            cursor: default;
        }
        .race-sm-btn-cancel {
            background: rgba(255,255,255,0.08);
            color: #aaa;
        }
        .race-sm-btn-add {
            background: #4ecdc4;
            color: #0a0e1a;
            font-weight: 600;
        }
        .race-sm-btn-add.disabled { opacity: 0.35; }
        .race-sm-connected-card {
            background: rgba(78,205,196,0.06);
            border: 1px solid rgba(78,205,196,0.2);
            border-radius: 10px;
            padding: 14px 16px;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .race-sm-connected-dot {
            width: 10px; height: 10px;
            background: #4ecdc4;
            border-radius: 50%;
            animation: race-pulse-green 2s ease infinite;
            flex-shrink: 0;
        }
        @keyframes race-pulse-green {
            0%, 100% { box-shadow: 0 0 0 0 rgba(78,205,196,0.5); }
            50% { box-shadow: 0 0 0 6px rgba(78,205,196,0); }
        }
        .race-sm-connected-label {
            font-size: 13px;
            font-weight: 600;
            color: #4ecdc4;
        }
        .race-sm-connected-host {
            font-size: 11px;
            color: #888;
            margin-left: auto;
            font-family: 'SF Mono', 'Menlo', monospace;
        }
        .race-sm-finder {
            background: rgba(255,255,255,0.03);
            border: 1px solid rgba(255,255,255,0.06);
            border-radius: 10px;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .race-sm-finder-titlebar {
            background: rgba(255,255,255,0.05);
            padding: 8px 12px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .race-sm-finder-dot { width: 9px; height: 9px; border-radius: 50%; }
        .race-sm-finder-dot.red { background: #ff5f57; }
        .race-sm-finder-dot.yellow { background: #febc2e; }
        .race-sm-finder-dot.green { background: #28c840; }
        .race-sm-finder-titlebar .title {
            flex: 1; text-align: center;
            font-size: 12px; color: #888;
        }
        .race-sm-finder-body { padding: 8px 0; }
        .race-sm-finder-item {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 4px 14px;
            font-size: 12px;
            color: #777;
        }
        .race-sm-finder-item.active {
            background: rgba(78,205,196,0.1);
            color: #fff;
        }
        .race-sm-finder-icon { width: 14px; height: 14px; flex-shrink: 0; }
        .race-result-badge {
            flex-shrink: 0;
            text-align: center;
            padding: 12px 0 8px;
            font-size: 13px;
            font-weight: 600;
            opacity: 0;
            transition: opacity 0.5s;
        }
        .race-result-badge.visible { opacity: 1; }
        .race-result-badge-left { color: #ff6b6b; }
        .race-result-badge-right { color: #4ecdc4; }
        .race-replay-overlay {
            position: absolute;
            inset: 0;
            display: flex;
            justify-content: center;
            align-items: flex-end;
            padding-bottom: 60px;
            z-index: 20;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.5s;
        }
        .race-replay-overlay.visible {
            opacity: 1;
            pointer-events: auto;
        }
        .race-replay-btn {
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.15);
            border-radius: 12px;
            padding: 14px 28px;
            color: #fff;
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: background 0.2s, border-color 0.2s;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }
        .race-replay-btn:hover {
            background: rgba(255,255,255,0.14);
            border-color: rgba(255,255,255,0.25);
        }
        .race-replay-icon { font-size: 18px; }