.english-path {
            position: relative;
            height: calc(100vh - 110px);
            min-height: 540px;
            max-height: 740px;
            padding: 90px 15px 110px;
            overflow: hidden;
        }
        .english-path svg {
            position: absolute;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 1;
        }
        .english-path .path-unlocked {
            fill: none;
            stroke: rgba(255,215,0,0.95);
            stroke-width: 5;
            stroke-linecap: round;
            stroke-dasharray: 12,8;
        }
        .english-path .path-locked {
            fill: none;
            stroke: rgba(255,255,255,0.6);
            stroke-width: 4;
            stroke-linecap: round;
            stroke-dasharray: 6,8;
        }
        .english-path .mountain-range {
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 58%;
            pointer-events: none;
            z-index: 0;
            opacity: 0.55;
            -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 0%, rgba(0,0,0,1) 65%, rgba(0,0,0,0) 100%);
            mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 0%, rgba(0,0,0,1) 65%, rgba(0,0,0,0) 100%);
        }
        .english-path .mountain-range path {
            stroke: none;
        }
        /* 云朵轮廓 */
        .cloud-icon {
            position: absolute;
            width: 55px;
            height: 36px;
            z-index: 2;
            animation: floatCloud 8s ease-in-out infinite;
            pointer-events: none;
        }
        .cloud-icon svg {
            width: 100%;
            height: 100%;
            overflow: visible;
        }
        .cloud-icon path {
            fill: rgba(255,255,255,0.95);
            stroke: rgba(255,255,255,0.95);
            stroke-width: 2.5;
            stroke-linecap: round;
            stroke-linejoin: round;
            filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
        }
        .english-path .level-item {
            position: absolute;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
            z-index: 10;
            border: 2px solid rgba(255,255,255,0.85);
            transform: translate(-50%, -50%);
            /* 气球/球体立体感 */
            background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.9) 0%, var(--node-color, #c8e6c9) 35%, var(--node-color, #c8e6c9) 65%, rgba(0,0,0,0.25) 100%);
            box-shadow: inset -4px -4px 10px rgba(0,0,0,0.15), inset 4px 4px 10px rgba(255,255,255,0.5), 0 6px 16px rgba(0,0,0,0.22);
        }
        .english-path .level-item:hover:not(.locked) { 
            transform: translate(-50%, -50%) scale(1.2) rotate(5deg) !important; 
            box-shadow: 0 8px 25px rgba(0,0,0,0.3); 
        }
        .english-path .level-item:active:not(.locked) { 
            transform: translate(-50%, -50%) scale(0.95) !important; 
        }
        .english-path .level-item.locked { 
            cursor: not-allowed; 
            opacity: 0.8;
            /* 灰色球体 */
            background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.85) 0%, #bdbdbd 35%, #9e9e9e 65%, rgba(0,0,0,0.3) 100%);
            box-shadow: inset -4px -4px 10px rgba(0,0,0,0.12), inset 4px 4px 10px rgba(255,255,255,0.4), 0 4px 12px rgba(0,0,0,0.15);
        }
        .english-path .level-item.current-level:not(.locked) {
            box-shadow: 0 0 20px rgba(255,215,0,0.9), 0 4px 15px rgba(0,0,0,0.2);
        }
        .english-path .level-item.boss-level {
            animation: nodePulse 1.5s ease-in-out infinite;
        }
        @keyframes nodePulse {
            0%, 100% { transform: translate(-50%, -50%) scale(1); }
            50% { transform: translate(-50%, -50%) scale(1.12); }
        }
        .english-path .level-item.camp-level {
            width: 62px;
            height: 62px;
            border: 3px solid rgba(255,255,255,0.9);
            background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.95) 0%, #81c784 35%, #4caf50 65%, rgba(0,0,0,0.25) 100%);
            box-shadow: inset -5px -5px 12px rgba(0,0,0,0.15), inset 5px 5px 12px rgba(255,255,255,0.55), 0 7px 20px rgba(0,0,0,0.25);
        }
        .english-path .level-item.boss-level {
            width: 68px;
            height: 68px;
            border: 3px solid #FFF8E1;
            background: radial-gradient(circle at 30% 30%, #FFF9C4 0%, #FFD700 35%, #FF8F00 65%, rgba(0,0,0,0.25) 100%);
            box-shadow: inset -5px -5px 14px rgba(0,0,0,0.15), inset 5px 5px 14px rgba(255,255,255,0.5), 0 0 25px rgba(255,215,0,0.9), 0 7px 20px rgba(0,0,0,0.25);
        }
        .english-path .level-item.completed-level {
            border: 2px solid #FFD700;
            box-shadow: inset -4px -4px 10px rgba(0,0,0,0.12), inset 4px 4px 10px rgba(255,255,255,0.45), 0 0 15px rgba(255,215,0,0.5), 0 5px 15px rgba(0,0,0,0.2);
        }
        .english-path .level-camp-icon {
            position: absolute;
            top: -10px;
            font-size: 18px;
            filter: drop-shadow(0 1px 2px rgba(0,0,0,0.2));
        }
        .english-path .level-boss-icon {
            position: absolute;
            top: -12px;
            font-size: 22px;
            filter: drop-shadow(0 1px 2px rgba(0,0,0,0.2));
        }
        .english-path .level-number { 
            font-size: 18px; 
            font-weight: 800; 
            color: #333;
            line-height: 1;
            z-index: 5;
            position: relative;
        }
        .english-path .level-title { display: none; }
        .english-path .level-grade { display: none; }
        .english-path .level-stars { 
            position: absolute;
            bottom: -6px;
            font-size: 9px;
            background: rgba(255,255,255,0.95);
            padding: 1px 4px;
            border-radius: 8px;
            box-shadow: 0 1px 4px rgba(0,0,0,0.15);
        }
        .english-path .level-status {
            position: absolute;
            top: -3px;
            right: -3px;
            font-size: 14px;
            z-index: 20;
            filter: drop-shadow(0 1px 2px rgba(0,0,0,0.2));
        }
        .english-path .level-status.lock-icon {
            position: absolute;
            top: 50%;
            left: 50%;
            right: auto;
            transform: translate(-50%, -50%);
            font-size: 32px;
            opacity: 0.55;
            z-index: 1;
            filter: none;
        }
        .english-path .level-progress-ring {
            position: absolute;
            bottom: -14px;
            left: 50%;
            transform: translateX(-50%);
            font-size: 9px;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(90deg, #667eea, #764ba2);
            padding: 1px 6px;
            border-radius: 8px;
            box-shadow: 0 1px 4px rgba(0,0,0,0.2);
            white-space: nowrap;
        }
        .english-path .level-title-badge {
            position: absolute;
            font-size: 11px;
            font-weight: 800;
            white-space: nowrap;
            z-index: 15;
            max-width: 95px;
            overflow: hidden;
            text-overflow: ellipsis;
            text-align: center;
            text-shadow: 
                0 0 3px rgba(255,255,255,0.95),
                0 0 6px rgba(255,255,255,0.8),
                0 1px 2px rgba(255,255,255,0.9);
            letter-spacing: 0.5px;
        }
        .english-path .level-title-badge.title-top {
            bottom: calc(100% + 4px);
            left: 50%;
            transform: translateX(-50%);
        }
        .english-path .level-title-badge.title-bottom {
            top: calc(100% + 4px);
            left: 50%;
            transform: translateX(-50%);
        }
        /* 手绘风格路径箭头 */
        .hand-arrow {
            position: absolute;
            width: 34px;
            height: 18px;
            z-index: 5;
            pointer-events: none;
            filter: drop-shadow(0 2px 3px rgba(0,0,0,0.25));
        }
        .hand-arrow svg {
            width: 100%;
            height: 100%;
            overflow: visible;
        }
        .hand-arrow path {
            fill: none;
            stroke: rgba(255,255,255,0.95);
            stroke-width: 3;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        @keyframes floatCloud {
            0%, 100% { transform: translateX(0); }
            50% { transform: translateX(36px); }
        }
/* ===== 错题复习页面 ===== */
.wrong-words-review-page {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}
.review-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    color: white;
}
.review-back, .review-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    cursor: pointer;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
}
.review-title {
    text-align: center;
    flex: 1;
}
.review-title-main {
    font-size: 18px;
    font-weight: bold;
}
.review-title-sub {
    font-size: 12px;
    opacity: 0.9;
    margin-top: 2px;
}
.review-progress-bar {
    height: 6px;
    background: rgba(255,255,255,0.2);
    margin: 0 16px 16px;
    border-radius: 3px;
    overflow: hidden;
}
.review-progress-fill {
    height: 100%;
    background: rgba(255,255,255,0.9);
    border-radius: 3px;
    transition: width 0.4s ease;
}
.review-body {
    padding: 0 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.review-question-card {
    background: white;
    border-radius: 24px;
    padding: 28px 20px;
    text-align: center;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}
.review-stage-tag {
    display: inline-block;
    background: rgba(102,126,234,0.1);
    color: #667eea;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}
.review-word {
    font-size: 40px;
    font-weight: bold;
    color: #333;
    margin-bottom: 6px;
}
.review-phonetic {
    font-size: 18px;
    color: #667eea;
    margin-bottom: 12px;
}
.review-audio-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-size: 22px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(102,126,234,0.3);
}
.review-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.review-option-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    background: white;
    border: 3px solid #e8e8e8;
    border-radius: 16px;
    padding: 18px 16px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.25s;
    text-align: left;
}
.review-option-btn.selected {
    border-color: #667eea;
    background: rgba(102,126,234,0.05);
}
.review-option-btn.correct {
    background: #d4edda;
    border-color: #28a745;
    color: #155724;
}
.review-option-btn.wrong {
    background: #f8d7da;
    border-color: #dc3545;
    color: #721c24;
}
.review-option-btn:disabled {
    opacity: 1;
}
.review-option-label {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f1f3f4;
    border-radius: 50%;
    font-weight: bold;
    font-size: 14px;
    flex-shrink: 0;
}
.review-option-btn.correct .review-option-label {
    background: #28a745;
    color: white;
}
.review-option-btn.wrong .review-option-label {
    background: #dc3545;
    color: white;
}
.review-feedback {
    background: white;
    border-radius: 16px;
    padding: 16px;
    text-align: center;
    font-size: 16px;
}
.review-feedback.wrong {
    color: #e53e3e;
}
.review-feedback-answer {
    font-size: 14px;
    color: #666;
    margin-top: 8px;
}
.review-actions {
    display: flex;
    gap: 12px;
}
.review-btn {
    flex: 1;
    padding: 16px;
    border-radius: 14px;
    border: none;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
}
.review-btn.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}
.review-btn.btn-secondary {
    background: white;
    color: #667eea;
    border: 2px solid rgba(255,255,255,0.8);
}
/* 答对详情弹窗 */
.review-detail-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 1000;
}
.review-detail-content {
    background: white;
    border-radius: 24px;
    padding: 28px 24px;
    width: 100%;
    max-width: 420px;
    text-align: center;
    box-shadow: 0 12px 40px rgba(0,0,0,0.2);
}
.review-detail-result {
    font-size: 56px;
    margin-bottom: 8px;
}
.review-detail-word {
    font-size: 32px;
    font-weight: bold;
    color: #333;
}
.review-detail-phonetic {
    font-size: 16px;
    color: #667eea;
    margin-bottom: 6px;
}
.review-detail-meaning {
    font-size: 18px;
    color: #666;
    margin-bottom: 16px;
}
.review-detail-example {
    background: #f8f9fa;
    border-radius: 14px;
    padding: 16px;
    margin-bottom: 16px;
    text-align: left;
}
.review-detail-example-label {
    font-size: 13px;
    color: #999;
    margin-bottom: 8px;
}
.review-detail-example-en {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    color: #333;
    font-style: italic;
    margin-bottom: 6px;
}
.review-detail-example-cn {
    font-size: 14px;
    color: #666;
}
.review-detail-audio {
    cursor: pointer;
    font-size: 18px;
}
.review-detail-stage {
    background: rgba(102,126,234,0.1);
    color: #667eea;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    display: inline-block;
}
.review-detail-stage.mastered {
    background: rgba(72,187,120,0.1);
    color: #48bb78;
}
.review-detail-next {
    font-size: 13px;
    color: #999;
    margin-bottom: 20px;
}
.review-detail-btn {
    width: 100%;
    padding: 16px;
    border-radius: 14px;
    border: none;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
}
/* 复习报告 */
.review-report {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 1001;
}
.review-report-card {
    background: white;
    border-radius: 24px;
    padding: 36px 24px;
    width: 100%;
    max-width: 380px;
    text-align: center;
}
.review-report-emoji {
    font-size: 72px;
    margin-bottom: 12px;
}
.review-report-title {
    font-size: 24px;
    font-weight: bold;
    color: #333;
    margin-bottom: 24px;
}
.review-report-stats {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 28px;
}
.review-report-stat {
    text-align: center;
}
.review-report-stat-value {
    font-size: 32px;
    font-weight: bold;
    color: #667eea;
}
.review-report-stat-label {
    font-size: 13px;
    color: #999;
    margin-top: 4px;
}
.review-report-btn {
    width: 100%;
    padding: 16px;
    border-radius: 14px;
    border: none;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
}
/* ===== 闯关结果页 ===== */
.challenge-result-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 4000;
}
.challenge-result-card {
    background: white;
    border-radius: 24px;
    padding: 36px 24px;
    width: 100%;
    max-width: 360px;
    text-align: center;
    box-shadow: 0 12px 40px rgba(0,0,0,0.2);
}
.challenge-result-icon {
    font-size: 64px;
    margin-bottom: 12px;
}
.challenge-result-title {
    font-size: 24px;
    font-weight: bold;
    color: #333;
    margin-bottom: 16px;
}
.challenge-result-stars {
    font-size: 32px;
    margin-bottom: 24px;
}
.challenge-result-stats {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 28px;
}
.challenge-result-stat {
    text-align: center;
}
.challenge-result-stat-value {
    font-size: 28px;
    font-weight: bold;
    color: #667eea;
}
.challenge-result-stat-label {
    font-size: 13px;
    color: #999;
    margin-top: 4px;
}
.challenge-result-actions {
    display: flex;
    gap: 12px;
}
.challenge-result-actions .btn {
    flex: 1;
    padding: 14px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: none;
}
.challenge-result-actions .btn-secondary {
    background: #f1f3f4;
    color: #666;
}
.challenge-result-actions .btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}
/* ===== 五宝与领域绑定展示 ===== */
.levels-domain-wubao,
.challenge-wubao {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(255,255,255,0.9);
    padding: 6px 12px;
    border-radius: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    font-size: 13px;
    color: #333;
}
.levels-domain-wubao .domain-wubao-icon,
.challenge-wubao .challenge-wubao-icon {
    font-size: 20px;
}
.levels-domain-wubao .domain-wubao-level,
.challenge-wubao .challenge-wubao-level {
    font-weight: 600;
}
.levels-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px;
    flex-wrap: wrap;
}
.levels-header .icon {
    font-size: 28px;
}
.levels-header h2 {
    flex: 1;
    margin: 0;
    font-size: 20px;
}
.levels-meta {
    width: 100%;
    font-size: 13px;
    color: #666;
    margin-top: 4px;
}
    position: relative; z-index: 10;
    display: flex; align-items: center; gap: 8px; flex-wrap: nowrap;
    padding: 8px 16px; margin-bottom: 4px;
}








.em-header {
    position: relative; z-index: 1;
    display: flex; align-items: center; gap: 8px;
    padding: 8px 16px; margin-bottom: 14px;
}
.em-header .em-icon { font-size: 28px; }
.em-header .em-name { font-size: 20px; font-weight: 700; color: #dd6b20; }
.em-header .em-lv { font-size: 14px; font-weight: 600; color: #dd6b20; }