* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            -webkit-tap-highlight-color: transparent;
        }
        html,
        body {
            width: 100%;
            height: 100%;
            overflow: hidden;
            background: #0a0a0a;
            color: #f5f5f5;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", Helvetica, Arial, sans-serif;
            user-select: none;
            -webkit-user-select: none;
            touch-action: none;
        }
        #app {
            width: 100vw;
            height: 100vh;
            height: 100dvh;
            position: relative;
            overflow: hidden;
        }
        .screen {
            position: absolute;
            inset: 0;
            display: none;
            flex-direction: column;
            align-items: center;
            padding: env(safe-area-inset-top) 20px env(safe-area-inset-bottom) 20px;
        }
        .screen.active {
            display: flex;
        }

        /* ===== 加载界面 ===== */
        #loading {
            justify-content: center;
            gap: 32px;
            background: #0a0a0a;
            z-index: 100;
        }
        .loading-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 28px;
            width: 100%;
            max-width: 360px;
        }
        .loading-title {
            font-size: clamp(40px, 11vw, 68px);
            font-weight: 800;
            letter-spacing: 6px;
            background: linear-gradient(135deg, #fff 0%, #999 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            text-align: center;
            line-height: 1.1;
            padding-left: 6px;
        }
        .loading-sub {
            font-size: 13px;
            color: #555;
            letter-spacing: 2px;
            margin-top: -4px;
        }
        .loading-bar-wrap {
            width: 100%;
            height: 6px;
            background: #1a1a1a;
            border-radius: 4px;
            overflow: hidden;
            position: relative;
            box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.05);
        }
        .loading-bar {
            height: 100%;
            width: 0%;
            border-radius: 4px;
            background: linear-gradient(90deg, #666, #fff);
            transition: width 0.25s ease-out;
        }
        .loading-percent {
            font-size: 18px;
            font-weight: 700;
            font-variant-numeric: tabular-nums;
            letter-spacing: 1px;
            color: #aaa;
        }
        .loading-hint {
            font-size: 12px;
            color: #555;
            text-align: center;
            line-height: 1.6;
            letter-spacing: 0.5px;
            padding: 0 8px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            margin-top: 4px;
        }
        .loading-hint span {
            color: #777;
        }
        .loading-spinner {
            width: 32px;
            height: 32px;
            border: 2px solid rgba(255, 255, 255, 0.06);
            border-top-color: #fff;
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin-top: -4px;
        }
        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }
        /* ===== 高级感动画关键帧 ===== */
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }
        @keyframes blurIn {
            from { opacity: 0; filter: blur(12px); transform: translateY(8px); }
            to { opacity: 1; filter: blur(0); transform: translateY(0); }
        }
        @keyframes blurInScale {
            from { opacity: 0; filter: blur(8px); transform: scale(0.96); }
            to { opacity: 1; filter: blur(0); transform: scale(1); }
        }
        @keyframes slideFadeLeft {
            from { opacity: 0; transform: translateX(-24px); filter: blur(4px); }
            to { opacity: 1; transform: translateX(0); filter: blur(0); }
        }
        @keyframes slideFadeRight {
            from { opacity: 0; transform: translateX(24px); filter: blur(4px); }
            to { opacity: 1; transform: translateX(0); filter: blur(0); }
        }
        @keyframes riseIn {
            from { opacity: 0; transform: translateY(16px); filter: blur(6px); }
            to { opacity: 1; transform: translateY(0); filter: blur(0); }
        }
        @keyframes floatY {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-5px); }
        }
        @keyframes gradientShift {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }
        @keyframes subtleGlow {
            0%, 100% { box-shadow: 0 0 0 0 rgba(255,255,255,0.06); }
            50% { box-shadow: 0 0 20px 2px rgba(255,255,255,0.1); }
        }
        @keyframes scorePop {
            0% { transform: scale(1); }
            40% { transform: scale(1.18); color: #fff; }
            100% { transform: scale(1); }
        }
        @keyframes shimmer {
            0% { background-position: -200% 0; }
            100% { background-position: 200% 0; }
        }
        @keyframes wipeDown {
            from { transform: scaleY(0); transform-origin: top; }
            to { transform: scaleY(1); transform-origin: top; }
        }
        @keyframes wipeUp {
            from { transform: scaleY(1); transform-origin: bottom; }
            to { transform: scaleY(0); transform-origin: bottom; }
        }
        @keyframes previewOpen {
            from { opacity: 0; transform: scale(0.6) rotate(-8deg); filter: blur(10px); }
            to { opacity: 1; transform: scale(1) rotate(0deg); filter: blur(0); }
        }
        @keyframes previewClose {
            from { opacity: 1; transform: scale(1) rotate(0deg); filter: blur(0); }
            to { opacity: 0; transform: scale(0.6) rotate(8deg); filter: blur(10px); }
        }
        @keyframes riseOut {
            from { opacity: 1; transform: translateY(0); filter: blur(0); }
            to { opacity: 0; transform: translateY(16px); filter: blur(6px); }
        }
        :root {
            --ease-out-expo: cubic-bezier(0.22, 1, 0.36, 1);
            --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
        }
        .screen.active {
            animation: fadeIn 0.5s var(--ease-out-expo);
        }
        .screen.active .game-title {
            animation: blurInScale 0.8s var(--ease-out-expo) both;
        }
        .screen.active .game-subtitle {
            animation: riseIn 0.6s var(--ease-out-expo) 0.15s both;
        }
        .screen.active .home-buttons .btn:first-child {
            animation: slideFadeLeft 0.6s var(--ease-out-expo) 0.25s both;
        }
        .screen.active .home-buttons .btn:last-child {
            animation: slideFadeRight 0.6s var(--ease-out-expo) 0.35s both;
        }
        .game-title {
            background-size: 200% 200%;
            animation: gradientShift 6s ease infinite;
        }
        .screen.active .section-title {
            animation: slideFadeLeft 0.5s var(--ease-out-expo) both;
        }
        .level-card {
            animation: riseIn 0.5s var(--ease-out-expo) both;
            transition: transform 0.3s var(--ease-out-quart), box-shadow 0.3s var(--ease-out-quart), border-color 0.3s;
        }
        .level-card:nth-child(1) { animation-delay: 0.08s; }
        .level-card:nth-child(2) { animation-delay: 0.16s; }
        .level-card:nth-child(3) { animation-delay: 0.24s; }
        .level-card:nth-child(4) { animation-delay: 0.32s; }
        .level-card:hover:not(.disabled) {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0,0,0,0.35);
            border-color: #3a3a3a;
        }
        .collection-item {
            animation: blurIn 0.5s var(--ease-out-expo) both;
            transition: transform 0.3s var(--ease-out-quart), box-shadow 0.3s var(--ease-out-quart), border-color 0.3s;
        }
        .collection-item:nth-child(1) { animation-delay: 0.04s; }
        .collection-item:nth-child(2) { animation-delay: 0.09s; }
        .collection-item:nth-child(3) { animation-delay: 0.14s; }
        .collection-item:nth-child(4) { animation-delay: 0.19s; }
        .collection-item:nth-child(5) { animation-delay: 0.24s; }
        .collection-item:nth-child(6) { animation-delay: 0.29s; }
        .collection-item:nth-child(7) { animation-delay: 0.34s; }
        .collection-item:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 28px rgba(0,0,0,0.35);
            border-color: #333;
        }
        .collection-photo {
            transition: transform 0.35s var(--ease-out-quart);
            cursor: pointer;
        }
        .collection-item:hover .collection-photo:not(.locked) {
            transform: scale(1.04);
        }
        .game-overlay.show {
            animation: fadeIn 0.35s var(--ease-out-expo);
        }
        #winOverlay.show .overlay-title {
            animation: blurInScale 0.7s var(--ease-out-expo) 0.1s both;
        }
        #winOverlay.show .final-photo {
            animation: blurInScale 0.8s var(--ease-out-expo) 0.2s both;
        }
        #winOverlay.show .overlay-score {
            animation: slideFadeLeft 0.5s var(--ease-out-expo) 0.4s both;
        }
        #winOverlay.show .overlay-buttons {
            animation: slideFadeRight 0.5s var(--ease-out-expo) 0.5s both;
        }
        #loseOverlay.show .overlay-title {
            animation: riseIn 0.5s var(--ease-out-expo) 0.1s both;
        }
        #loseOverlay.show .overlay-score {
            animation: blurInScale 0.6s var(--ease-out-expo) 0.25s both;
        }
        #loseOverlay.show .overlay-buttons {
            animation: riseIn 0.5s var(--ease-out-expo) 0.4s both;
        }
        .final-photo {
            animation: subtleGlow 3s ease-in-out infinite;
        }
        .btn {
            position: relative;
            overflow: hidden;
            transition: transform 0.2s var(--ease-out-quart), box-shadow 0.2s var(--ease-out-quart), background 0.2s;
        }
        .btn:hover {
            transform: translateY(-1px);
        }
        .btn::after {
            content: '';
            position: absolute;
            top: 50%; left: 50%;
            width: 0; height: 0;
            border-radius: 50%;
            background: rgba(255,255,255,0.12);
            transform: translate(-50%, -50%);
            transition: width 0.5s var(--ease-out-quart), height 0.5s var(--ease-out-quart);
        }
        .btn:active::after {
            width: 300px; height: 300px;
            transition: 0s;
        }
        .score-value.pop {
            animation: scorePop 0.35s var(--ease-out-quart);
        }
        .loading-bar {
            background: linear-gradient(90deg, #333, #fff, #333);
            background-size: 200% 100%;
            animation: shimmer 2s linear infinite;
        }
        .tabs {
            position: relative;
        }
        .tab-indicator {
            position: absolute;
            top: 4px;
            bottom: 4px;
            background: #fff;
            border-radius: 8px;
            transition: left 0.4s var(--ease-out-expo), width 0.4s var(--ease-out-expo);
            z-index: 0;
            box-shadow: 0 2px 8px rgba(255,255,255,0.2);
        }
        .tab {
            position: relative;
            z-index: 1;
            transition: color 0.3s var(--ease-out-quart);
        }
        .tab.active {
            color: #000 !important;
            box-shadow: none;
        }
        .icon-btn {
            transition: transform 0.25s var(--ease-out-quart), background 0.2s;
        }
        .icon-btn:hover {
            transform: scale(1.08);
        }
        .next-ball {
            animation: floatY 2.5s ease-in-out infinite;
        }
        #transition-overlay {
            position: fixed;
            inset: 0;
            background: #0a0a0a;
            z-index: 9999;
            transform: scaleY(0);
            transform-origin: top;
            pointer-events: none;
        }
        #transition-overlay.wipe-in {
            animation: wipeDown 0.4s var(--ease-out-expo) forwards;
            pointer-events: all;
        }
        #transition-overlay.wipe-out {
            animation: wipeUp 0.4s var(--ease-out-expo) forwards;
            pointer-events: all;
        }
        #photo-preview {
            position: fixed;
            inset: 0;
            z-index: 9998;
            display: none;
            align-items: center;
            justify-content: center;
            background: rgba(0,0,0,0.8);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
        }
        #photo-preview.show {
            display: flex;
            animation: fadeIn 0.3s var(--ease-out-expo);
        }
        #photo-preview.closing {
            animation: previewBgClose 0.38s ease forwards;
        }
        @keyframes previewBgClose {
            from { background: rgba(0,0,0,0.8); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); }
            to { background: rgba(0,0,0,0); backdrop-filter: blur(0); -webkit-backdrop-filter: blur(0); }
        }
        #photo-preview .preview-img-wrap {
            width: min(78vw, 340px);
            height: min(78vw, 340px);
            border-radius: 50%;
            overflow: hidden;
            border: 2px solid rgba(255,255,255,0.15);
            box-shadow: 0 24px 64px rgba(0,0,0,0.5);
            animation: previewOpen 0.55s var(--ease-out-expo);
        }
        #photo-preview.closing .preview-img-wrap {
            animation: previewClose 0.4s var(--ease-out-expo) forwards;
        }
        #photo-preview .preview-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        #photo-preview .preview-info {
            position: absolute;
            bottom: calc(env(safe-area-inset-bottom) + 40px);
            left: 0;
            right: 0;
            text-align: center;
            color: #fff;
            animation: riseIn 0.5s var(--ease-out-expo) 0.2s both;
        }
        #photo-preview.closing .preview-info {
            animation: riseOut 0.35s var(--ease-out-expo) forwards;
        }
        #photo-preview .preview-name {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 4px;
            letter-spacing: 0.5px;
        }
        #photo-preview .preview-level {
            font-size: 13px;
            color: rgba(255,255,255,0.5);
            letter-spacing: 1px;
        }
        /* ===== 主界面 ===== */
        #home {
            justify-content: center;
            gap: 40px;
        }
        .game-title {
            font-size: clamp(40px, 11vw, 68px);
            font-weight: 800;
            letter-spacing: 6px;
            background: linear-gradient(135deg, #fff 0%, #999 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            text-align: center;
            line-height: 1.1;
            padding-left: 6px;
        }
        .game-subtitle {
            font-size: 13px;
            color: #555;
            letter-spacing: 2px;
            margin-top: -8px;
        }
        .home-buttons {
            display: flex;
            flex-direction: column;
            gap: 16px;
            width: 100%;
            max-width: 320px;
        }
        .btn {
            width: 100%;
            padding: 16px 24px;
            background: #1a1a1a;
            border: 1px solid #2a2a2a;
            color: #f5f5f5;
            font-size: 16px;
            font-weight: 600;
            border-radius: 12px;
            cursor: pointer;
            transition: all 0.2s ease;
            letter-spacing: 1px;
        }
        .btn:hover {
            background: #252525;
            border-color: #3a3a3a;
        }
        .btn:active {
            transform: scale(0.97);
        }
        .btn-primary {
            background: #fff;
            color: #0a0a0a;
            border-color: #fff;
        }
        .btn-primary:hover {
            background: #e5e5e5;
            border-color: #e5e5e5;
        }
        .btn-ghost {
            background: transparent;
            border: 1px solid #333;
        }

        /* ===== 关卡选择 ===== */
        #levelSelect {
            justify-content: flex-start;
            padding-top: 60px;
            gap: 24px;
            overflow-y: auto;
        }
        .section-title {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 1px;
        }
        .level-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            width: 100%;
            max-width: 400px;
            padding-bottom: 20px;
        }
        .level-card {
            background: #141414;
            border: 1px solid #222;
            border-radius: 16px;
            padding: 24px;
            display: flex;
            align-items: center;
            gap: 20px;
            cursor: pointer;
            transition: all 0.2s ease;
        }
        .level-card:hover {
            background: #1a1a1a;
            border-color: #333;
        }
        .level-card:active {
            transform: scale(0.98);
        }
        .level-card.disabled {
            opacity: 0.5;
            cursor: not-allowed;
            pointer-events: none; /* 未解锁关卡直接不可点，避免点了只响一声却无反应 */
        }
        .level-card .level-avatar {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: #222;
            flex-shrink: 0;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
        }
        .level-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .level-info {
            flex: 1;
        }
        .level-name {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .level-desc {
            font-size: 13px;
            color: #888;
        }
        .level-arrow {
            color: #555;
            font-size: 20px;
        }

        /* ===== 游戏界面 ===== */
        #game {
            padding: 0;
        }
        .game-topbar {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            z-index: 10;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: calc(env(safe-area-inset-top) + 12px) 16px 12px 16px;
            background: linear-gradient(to bottom, rgba(10, 10, 10, 0.95) 0%, rgba(10, 10, 10, 0) 100%);
            pointer-events: none;
        }
        .game-topbar>* {
            pointer-events: auto;
        }
        .icon-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            cursor: pointer;
            font-size: 16px;
            backdrop-filter: blur(10px);
            transition: all 0.15s ease;
        }
        .icon-btn:hover {
            background: rgba(255, 255, 255, 0.15);
        }
        .icon-btn:active {
            transform: scale(0.9);
        }
        .score-box {
            text-align: right;
        }
        .score-label {
            font-size: 11px;
            color: #888;
            letter-spacing: 1px;
        }
        .score-value {
            font-size: 24px;
            font-weight: 800;
            font-variant-numeric: tabular-nums;
        }
        .next-box {
            position: absolute;
            top: calc(env(safe-area-inset-top) + 100px);
            /* 调整垂直位置，避免与音效按钮重叠 */
            right: 16px;
            z-index: 10;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            pointer-events: none;
        }
        .next-label {
            font-size: 10px;
            color: #666;
            letter-spacing: 1px;
        }
        .next-ball {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            overflow: hidden;
            border: 2px solid rgba(255, 255, 255, 0.15);
        }
        .next-ball img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        #gameCanvas {
            display: block;
            width: 100%;
            height: 100%;
            background: #0a0a0a;
        }
        .game-overlay {
            position: absolute;
            inset: 0;
            z-index: 20;
            background: rgba(0, 0, 0, 0.85);
            backdrop-filter: blur(20px);
            display: none;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 32px;
            gap: 24px;
        }
        .game-overlay.show {
            display: flex;
        }
        .overlay-title {
            font-size: 28px;
            font-weight: 800;
            letter-spacing: 2px;
        }
        .overlay-score {
            font-size: 48px;
            font-weight: 900;
            background: linear-gradient(135deg, #fff 0%, #888 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .final-photo {
            width: 180px;
            height: 180px;
            border-radius: 50%;
            overflow: hidden;
            border: 4px solid #fff;
            box-shadow: 0 20px 60px rgba(255, 255, 255, 0.2);
        }
        .final-photo img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .overlay-buttons {
            display: flex;
            flex-direction: column;
            gap: 12px;
            width: 100%;
            max-width: 280px;
        }

        /* ===== 图鉴 ===== */
        #collection {
            padding: 0 20px calc(env(safe-area-inset-bottom) + 20px) 20px;
        }
        .collection-header {
            width: 100%;
            max-width: 500px;
            padding: calc(env(safe-area-inset-top) + 16px) 0 16px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-shrink: 0;
        }
        .collection-title {
            font-size: 20px;
            font-weight: 700;
            flex: 1;
            text-align: center;
            margin-right: 40px;
        }
        .tabs {
            width: 100%;
            max-width: 500px;
            display: flex;
            gap: 0;
            margin-bottom: 20px;
            background: #141414;
            border-radius: 10px;
            padding: 4px;
            flex-shrink: 0;
        }
        .tab {
            flex: 1;
            padding: 10px;
            text-align: center;
            font-size: 14px;
            font-weight: 600;
            color: #777;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.2s ease;
        }
        .tab.active {
            color: #0a0a0a;
        }
        .collection-grid {
            width: 100%;
            max-width: 500px;
            flex: 1;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            padding-bottom: 30px;
            overflow-y: auto;
            -webkit-overflow-scrolling: touch;
            align-content: start;
        }
        .collection-item {
            background: #141414;
            border: 1px solid #222;
            border-radius: 14px;
            padding: 12px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }
        .collection-photo {
            width: 100%;
            aspect-ratio: 1/1;
            border-radius: 50%;
            overflow: hidden;
            background: #1a1a1a;
            border: 2px solid #2a2a2a;
            flex-shrink: 0;
        }
        .collection-photo img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .collection-photo.locked {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            color: #333;
            font-weight: 900;
        }
        .collection-info {
            text-align: center;
            flex-shrink: 0;
            width: 100%;
        }
        .collection-level {
            font-size: 12px;
            color: #666;
            margin-bottom: 2px;
        }
        .collection-name {
            font-size: 14px;
            font-weight: 600;
        }
        .download-btn {
            padding: 6px 14px;
            font-size: 12px;
            background: #1f1f1f;
            border: 1px solid #333;
            color: #ccc;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.15s ease;
            flex-shrink: 0;
            width: 100%;
        }
        .download-btn:hover {
            background: #2a2a2a;
            color: #fff;
        }
        .download-btn:disabled {
            opacity: 0.3;
            cursor: not-allowed;
        }
        .collection-grid::-webkit-scrollbar {
            width: 4px;
        }
        .collection-grid::-webkit-scrollbar-track {
            background: transparent;
        }
        .collection-grid::-webkit-scrollbar-thumb {
            background: #333;
            border-radius: 2px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 420px) {
            .loading-title {
                font-size: 32px;
            }
            .level-card {
                padding: 16px;
                gap: 14px;
            }
            .level-avatar {
                width: 48px;
                height: 48px;
                font-size: 20px;
            }
            .level-name {
                font-size: 15px;
            }
            .collection-grid {
                gap: 12px;
                padding-bottom: 20px;
            }
        }

        /* ===== 音乐播放器 ===== */
        #music-player {
            position: fixed;
            bottom: calc(env(safe-area-inset-bottom) + 16px);
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 10px 18px 10px 14px;
            background: rgba(15, 15, 15, 0.72);
            backdrop-filter: blur(24px) saturate(180%);
            -webkit-backdrop-filter: blur(24px) saturate(180%);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 100px;
            z-index: 9995;
            max-width: 88vw;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            animation: musicFadeIn 0.6s var(--ease-out-expo) 0.8s both;
        }
        @keyframes musicFadeIn {
            from { opacity: 0; transform: translateX(-50%) translateY(12px); }
            to { opacity: 1; transform: translateX(-50%) translateY(0); }
        }
        #music-player .music-cover {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, #333, #1a1a1a);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            border: 1px solid rgba(255,255,255,0.08);
            transition: opacity 0.15s ease, transform 0.15s ease;
        }
        #music-player .music-cover.switching {
            opacity: 0;
            transform: scale(0.8);
        }
        #music-player .music-cover svg {
            width: 16px;
            height: 16px;
            stroke: rgba(255,255,255,0.4);
            fill: none;
            stroke-width: 1.5;
        }
        #music-player.playing .music-cover {
            animation: coverSpin 8s linear infinite;
            background: linear-gradient(135deg, #444, #222);
        }
        #music-player.playing .music-cover svg {
            stroke: #fff;
        }
        @keyframes coverSpin {
            to { transform: rotate(360deg); }
        }
        #music-player .music-info {
            flex: 1;
            min-width: 0;
            overflow: hidden;
        }
        #music-player .music-title {
            font-size: 12px;
            color: rgba(255,255,255,0.85);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 120px;
            font-weight: 500;
            letter-spacing: 0.3px;
        }
        #music-player .music-artist {
            font-size: 10px;
            color: rgba(255,255,255,0.45);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 120px;
            margin-top: 2px;
        }
        #music-player .music-controls {
            display: flex;
            align-items: center;
            gap: 2px;
        }
        #music-player .music-btn {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            border: none;
            background: transparent;
            color: rgba(255,255,255,0.6);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: color 0.2s, background 0.2s, transform 0.2s var(--ease-out-quart);
        }
        #music-player .music-btn svg {
            width: 16px;
            height: 16px;
            stroke: currentColor;
            fill: currentColor;
            stroke-width: 1.2;
            stroke-linejoin: round;
            stroke-linecap: round;
            paint-order: stroke fill;
        }
        #music-player .music-btn:hover {
            color: #fff;
            background: rgba(255,255,255,0.08);
        }
        #music-player .music-btn:active {
            transform: scale(0.9);
        }
        #music-player .play-btn {
            width: 36px;
            height: 36px;
            background: #fff;
            color: #000;
        }
        #music-player .play-btn svg {
            width: 14px;
            height: 14px;
            stroke: #000;
            fill: #000;
            stroke-width: 1.2;
            stroke-linejoin: round;
            stroke-linecap: round;
            paint-order: stroke fill;
        }
        #music-player .play-btn:hover {
            background: #eee;
            color: #000;
        }

        /* ===== 音乐列表面板 ===== */
        #music-list-panel {
            position: fixed;
            inset: 0;
            z-index: 9996;
            background: rgba(0,0,0,0.6);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            display: none;
            align-items: flex-end;
            justify-content: center;
        }
        #music-list-panel.show {
            display: flex;
            animation: fadeIn 0.25s ease;
        }
        #music-list-panel .music-list-content {
            width: 100%;
            max-width: 500px;
            max-height: 70vh;
            background: #141414;
            border-radius: 20px 20px 0 0;
            border-top: 1px solid rgba(255,255,255,0.08);
            display: flex;
            flex-direction: column;
            animation: slideUp 0.35s var(--ease-out-expo);
        }
        @keyframes slideUp {
            from { transform: translateY(100%); }
            to { transform: translateY(0); }
        }
        #music-list-panel .music-list-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 20px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            font-size: 16px;
            font-weight: 600;
            color: #fff;
        }
        #music-list-panel .music-list-close {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            border: none;
            background: rgba(255,255,255,0.08);
            color: #fff;
            font-size: 14px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        #music-list-panel .music-list-grid {
            flex: 1;
            overflow-y: auto;
            padding: 12px;
        }
        #music-list-panel .music-list-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px;
            border-radius: 12px;
            cursor: pointer;
            transition: background 0.2s;
            margin-bottom: 4px;
        }
        #music-list-panel .music-list-item:hover {
            background: rgba(255,255,255,0.05);
        }
        #music-list-panel .music-list-item.active {
            background: rgba(255,255,255,0.08);
        }
        #music-list-panel .mli-cover {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: linear-gradient(135deg, #333, #1a1a1a);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            overflow: hidden;
            font-size: 20px;
            color: rgba(255,255,255,0.3);
        }
        #music-list-panel .mli-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        #music-list-panel .mli-info {
            flex: 1;
            min-width: 0;
        }
        #music-list-panel .mli-name {
            font-size: 14px;
            color: #fff;
            font-weight: 500;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        #music-list-panel .mli-status {
            font-size: 12px;
            color: rgba(255,255,255,0.4);
            margin-top: 2px;
        }
        #music-list-panel .music-list-item.active .mli-status {
            color: #4ade80;
        }

        /* 播放列表关闭动画 */
        #music-list-panel.closing .music-list-content {
            animation: slideDown 0.3s var(--ease-out-expo) forwards;
        }
        @keyframes slideDown {
            from { transform: translateY(0); opacity: 1; }
            to { transform: translateY(100%); opacity: 0; }
        }
        #music-list-panel.closing {
            animation: fadeOut 0.3s ease forwards;
        }
        @keyframes fadeOut {
            from { opacity: 1; }
            to { opacity: 0; }
        }

        /* 播放列表tab切换（和图鉴一致风格） */
        .music-tabs {
            position: relative;
            display: flex;
            gap: 0;
            margin: 12px 16px;
            background: #141414;
            border-radius: 10px;
            padding: 4px;
            justify-content: center;
        }
        .music-tabs .tab-indicator {
            position: absolute;
            top: 4px;
            bottom: 4px;
            left: 4px;
            width: calc(50% - 6px);
            background: #fff;
            border-radius: 8px;
            transition: left 0.4s var(--ease-out-expo), width 0.4s var(--ease-out-expo);
            z-index: 0;
            box-shadow: 0 2px 8px rgba(255,255,255,0.2);
        }
        .music-tab {
            position: relative;
            z-index: 1;
            flex: 1;
            padding: 10px;
            text-align: center;
            font-size: 14px;
            font-weight: 600;
            color: #777;
            border-radius: 8px;
            cursor: pointer;
            transition: color 0.3s var(--ease-out-quart);
        }
        .music-tab.active {
            color: #0a0a0a;
        }
        .music-tab:hover:not(.active) {
            color: #aaa;
        }
        /* 列表高度过渡 */
        .music-list-grid {
            transition: height 0.4s var(--ease-out-expo);
            overflow: hidden;
        }
        /* 添加歌曲按钮 */
        .music-add-btn {
            display: none;
            align-items: center;
            justify-content: center;
            gap: 6px;
            margin: 12px 16px 16px;
            padding: 10px;
            border-radius: 12px;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.6);
            font-size: 13px;
            cursor: pointer;
            transition: all 0.2s ease;
        }
        .music-add-btn:hover {
            background: rgba(255,255,255,0.1);
            color: #fff;
        }
        /* 本地歌曲删除按钮 */
        .mli-delete {
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            color: rgba(255,255,255,0.3);
            font-size: 12px;
            cursor: pointer;
            transition: all 0.2s ease;
        }
        .mli-delete:hover {
            background: rgba(255,80,80,0.2);
            color: #ff5050;
        }
        .music-list-item {
            position: relative;
        }

        /* ===== 大屏适配 ===== */
        @media (min-width: 768px) {
            #home {
                gap: 40px;
            }
            .game-title {
                font-size: clamp(40px, 5vw, 64px);
            }
            .home-buttons {
                max-width: 360px;
            }
            .btn {
                padding: 18px 28px;
                font-size: 17px;
            }
            #levelSelect {
                padding-top: 40px;
            }
            .level-list {
                max-width: 480px;
            }
            .collection-header,
            .tabs,
            .collection-grid {
                max-width: 600px;
            }
            .loading-content {
                max-width: 420px;
            }
        }

        /* ===== 超宽屏适配 ===== */
        @media (min-width: 1200px) {
            #home .home-buttons {
                max-width: 400px;
            }
            .game-title {
                font-size: 64px;
            }
        }

        /* ===== 横屏低高度适配 ===== */
        @media (orientation: landscape) and (max-height: 500px) {
            #home {
                gap: 20px;
                padding-top: 20px;
                padding-bottom: 20px;
            }
            .game-title {
                font-size: clamp(24px, 5vh, 36px);
            }
            .game-subtitle {
                font-size: 12px;
                margin-top: -12px;
            }
            .home-buttons {
                gap: 10px;
                max-width: 280px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            #loading {
                gap: 16px;
            }
            .loading-content {
                gap: 16px;
            }
            #levelSelect {
                padding-top: 20px;
                gap: 16px;
            }
            .level-list {
                gap: 10px;
            }
            .level-card {
                padding: 14px 20px;
            }
            .level-avatar {
                width: 44px;
                height: 44px;
                font-size: 20px;
            }
        }

        /* ===== 横屏大屏适配 ===== */
        @media (orientation: landscape) and (min-height: 501px) {
            #home {
                gap: 32px;
            }
        }

        /* ===== 版本号标识 ===== */
        .version-badge {
            position: absolute;
            top: calc(env(safe-area-inset-top) + 16px);
            right: 20px;
            font-size: 11px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.25);
            letter-spacing: 0.5px;
            z-index: 5;
            pointer-events: none;
            font-variant-numeric: tabular-nums;
        }

        /* ===== Toast 提示 ===== */
        .toast-msg {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: #fff;
            color: #000;
            padding: 16px 36px;
            border-radius: 14px;
            font-size: 17px;
            font-weight: 600;
            z-index: 999999;
            opacity: 0;
            -webkit-transition: opacity 0.25s, transform 0.25s;
            transition: opacity 0.25s, transform 0.25s;
            pointer-events: none;
            white-space: nowrap;
            -webkit-transform: translate(-50%, -50%) scale(0.9);
            box-shadow: 0 8px 32px rgba(0,0,0,0.5);
        }
        .toast-msg.show {
            opacity: 1;
            -webkit-transform: translate(-50%, -50%) scale(1);
            transform: translate(-50%, -50%) scale(1);
        }

        /* ===== 未解锁关卡点击抖动 ===== */
        @keyframes shakeCard {
            0%, 100% { transform: translateX(0); }
            20% { transform: translateX(-8px); }
            40% { transform: translateX(8px); }
            60% { transform: translateX(-5px); }
            80% { transform: translateX(5px); }
        }
        .shake-card {
            animation: shakeCard 0.5s ease-in-out;
        }

        /* ===== 关卡提示框 ===== */
        .level-hint-modal {
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(0,0,0,0.6);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 10000;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }
        .level-hint-modal.show {
            opacity: 1;
            visibility: visible;
        }
        .level-hint-box {
            background: #141414;
            border: 1px solid #2a2a2a;
            border-radius: 20px;
            padding: 36px 32px 28px;
            text-align: center;
            max-width: 300px;
            width: 80%;
            transform: translateY(20px) scale(0.96);
            opacity: 0;
            transition: transform 0.35s var(--ease-out-expo), opacity 0.35s ease;
        }
        .level-hint-modal.show .level-hint-box {
            transform: translateY(0) scale(1);
            opacity: 1;
        }
        .level-hint-title {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #fff;
            letter-spacing: 1px;
        }
        .level-hint-text {
            font-size: 15px;
            color: #999;
            margin-bottom: 28px;
            line-height: 1.6;
        }
        .level-hint-btn {
            background: #fff;
            color: #0a0a0a;
            border: none;
            padding: 14px 40px;
            border-radius: 28px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.15s ease, background 0.15s ease;
        }
        .level-hint-btn:hover {
            background: #e5e5e5;
        }
        .level-hint-btn:active {
            transform: scale(0.96);
        }