/* 基础样式重置和变量定义 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #165DFF;
    --secondary-color: #36BFFA;
    --dark-color: #1D2939;
    --light-color: #F9FAFB;
    --gray-color: #667085;
    --border-color: #E4E7EC;
    --success-color: #039855;
    --warning-color: #F79009;
    --danger-color: #D92D20;
    --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
header {
    background-color: #fff;
    box-shadow: var(--box-shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    /* 确保在所有浏览器中都能正确固定 */
    will-change: transform;
    transition: box-shadow 0.3s ease;
}

/* 滚动时增强阴影效果 */
header.scrolled {
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 20px;
}

nav a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
    padding: 8px 12px;
    border-radius: 6px;
}

nav a:hover {
    color: var(--primary-color);
    background-color: #F0F7FF;
}

/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 80px 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.features {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.feature-item {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 12px;
    backdrop-filter: blur(10px);
    min-width: 250px;
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-5px);
    background-color: rgba(255, 255, 255, 0.15);
}

.feature-item i {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.feature-item h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.btn-primary {
    display: inline-block;
    background-color: white;
    color: var(--primary-color);
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--box-shadow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* 课程部分 */
.lessons-section {
    padding: 80px 0;
}

.lessons-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.lesson-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.lesson-card {
    background-color: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    position: relative;
    cursor: pointer;
    padding: 20px;
    border-left: 4px solid var(--primary-color);
}

.lesson-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.lesson-number {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: #F0F7FF;
    color: var(--primary-color);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
}

.lesson-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.lesson-card p {
    color: var(--gray-color);
    margin-bottom: 20px;
}

.lesson-progress {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.progress-text {
    font-size: 0.9rem;
    color: var(--gray-color);
}

/* 互动练习部分 */
.interactive-section {
    background-color: #F9FAFB;
    padding: 80px 0;
}

.interactive-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.interactive-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 30px;
    background-color: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--box-shadow);
}

.exercise-panel {
    background-color: #F8FAFC;
    border-radius: 8px;
    padding: 20px;
    border: 1px solid var(--border-color);
}

.exercise-panel h3 {
    margin-bottom: 15px;
    color: var(--dark-color);
    font-size: 1.2rem;
}

.exercise-panel p {
    color: var(--gray-color);
    line-height: 1.6;
}

.code-panel {
    display: flex;
    flex-direction: column;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.code-header span {
    font-weight: 600;
    color: var(--dark-color);
}

.code-controls {
    display: flex;
    gap: 10px;
}

.code-controls button {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 5px;
}

#run-code {
    background-color: var(--success-color);
    color: white;
}

#run-code:hover {
    background-color: #028442;
}

#reset-code {
    background-color: var(--gray-color);
    color: white;
}

#reset-code:hover {
    background-color: #555;
}

#code-editor {
    width: 100%;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 14px;
    resize: vertical;
    min-height: 300px;
    margin-bottom: 20px;
}

.code-output {
    background-color: #fff;
    border-radius: 8px;
    padding: 15px;
    border: 1px solid var(--border-color);
}

.code-output h4 {
    margin-bottom: 10px;
    color: var(--dark-color);
    font-size: 1rem;
}

#output {
    background-color: #fff;
    color: rgb(108, 117, 125);
    padding: 15px;
    border-radius: 6px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 13px;
    white-space: pre-wrap;
    min-height: 100px;
}

/* 资源部分 */
.resources-section {
    padding: 80px 0;
}

.resources-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.resource-item {
    background-color: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border-top: 4px solid var(--secondary-color);
}

.resource-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.resource-item i {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.resource-item h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.resource-item p {
    color: var(--gray-color);
    margin-bottom: 15px;
}

.resource-link {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.resource-link:hover {
    text-decoration: underline;
}

/* 页脚 */
footer {
    background-color: var(--dark-color);
    color: white;
    padding: 40px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.footer-info h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.footer-info p {
    color: #CBD5E1;
}

.footer-links ul {
    list-style: none;
}

.footer-links a {
    color: #CBD5E1;
    text-decoration: none;
    transition: var(--transition);
    display: block;
    padding: 5px 0;
}

.footer-links a:hover {
    color: white;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    color: white;
    font-size: 1.2rem;
    transition: var(--transition);
}

.footer-social a:hover {
    color: var(--secondary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #94A3B8;
    font-size: 0.9rem;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    padding: 20px;
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    background-color: white;
    border-radius: 16px;
    width: 100%;
    max-width: 850px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
    animation: scaleIn 0.3s ease-out;
    position: relative;
    border: none;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
}

/* 自定义滚动条样式 */
.modal-content::-webkit-scrollbar {
    width: 8px;
}

.modal-content::-webkit-scrollbar-track {
    background: #F1F5F9;
    border-radius: 10px;
}

.modal-content::-webkit-scrollbar-thumb {
    background: #CBD5E1;
    border-radius: 10px;
    transition: background 0.3s ease;
}

.modal-content::-webkit-scrollbar-thumb:hover {
    background: #94A3B8;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 30px;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(135deg, #F8FAFC, #F1F5F9);
    position: relative;
    overflow: hidden;
}

.modal-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
}

.modal-header h2 {
    font-size: 1.6rem;
    color: var(--dark-color);
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 12px;
}

#close-modal {
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid var(--border-color);
    font-size: 1.2rem;
    cursor: pointer;
    color: var(--gray-color);
    padding: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

#close-modal:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: rotate(90deg);
}

.modal-body {
    padding: 30px;
    background-color: white;
}

.modal-body h3 {
    font-size: 1.3rem;
    color: var(--dark-color);
    margin-top: 0;
    margin-bottom: 15px;
    font-weight: 600;
}

.modal-body p {
    color: var(--gray-color);
    line-height: 1.7;
    margin-bottom: 20px;
}

.modal-body ul, .modal-body ol {
    padding-left: 25px;
    margin-bottom: 20px;
}

.modal-body li {
    color: var(--gray-color);
    line-height: 1.7;
    margin-bottom: 8px;
}

.modal-body code {
    background-color: #F1F5F9;
    color: var(--primary-color);
    padding: 3px 6px;
    border-radius: 4px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9em;
    font-weight: 600;
}

.modal-footer {
    padding: 24px 30px;
    border-top: 1px solid var(--border-color);
    text-align: right;
    background-color: #F8FAFC;
}

#start-exercise {
    background: linear-gradient(135deg, var(--primary-color), #0F46D0);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    box-shadow: 0 4px 15px rgba(22, 93, 255, 0.3);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

#start-exercise:hover {
    background: linear-gradient(135deg, #0F46D0, #0A3BAA);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(22, 93, 255, 0.4);
}

/* 示例代码的CodeMirror样式 */
.example-codemirror {
    margin: 15px 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border: 1px solid #ccc;
}

.example-codemirror .CodeMirror {
    height: auto !important;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.5;
    border-radius: 8px;
}

.example-codemirror .CodeMirror-lines {
    padding: 15px;
}

.example-codemirror .CodeMirror-gutters {
    background-color: #f7f7f7;
    border-right: 1px solid #ccc;
    padding-right: 8px;
}

.example-codemirror .CodeMirror-linenumber {
    color: #555;
    padding: 0 8px;
}

.example-codemirror .CodeMirror-foldgutter-open,
.example-codemirror .CodeMirror-foldgutter-folded {
    color: #666;
}

.example-codemirror .CodeMirror-cursor {
    border-left: 2px solid #000;
}

/* 复制代码按钮样式优化 */
.copy-code-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 8px;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
}

.copy-code-btn:hover {
    background-color: #0F46D0;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(22, 93, 255, 0.3);
}

.copy-code-btn:active {
    transform: translateY(0);
}

/* 示例项目样式 */
.example-item {
    margin-bottom: 30px;
    padding: 20px;
    background-color: #F8FAFC;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.example-item:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transform: translateY(-2px);
}

.example-item h4 {
    font-size: 1.2rem;
    color: var(--dark-color);
    margin-top: 0;
    margin-bottom: 15px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.example-desc {
    color: var(--gray-color);
    line-height: 1.6;
    margin-top: 10px;
    font-size: 0.95rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 15px;
        padding: 10px 20px;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .features {
        flex-direction: column;
        align-items: center;
    }
    
    .feature-item {
        width: 100%;
        max-width: 300px;
    }
    
    .interactive-container {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    /* 响应式示例代码样式 */
    .example-codemirror .CodeMirror {
        font-size: 12px;
    }
    
    .example-item {
        padding: 15px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 60px 0;
    }
    
    .hero-content h2 {
        font-size: 1.8rem;
    }
    
    .lessons-section, .interactive-section, .resources-section {
        padding: 60px 0;
    }
    
    .lesson-cards, .resources-grid {
        grid-template-columns: 1fr;
    }
}

/* 资源模态框特定样式 */
.resource-modal .modal-content {
    max-width: 900px;
}

/* 课程解锁提示模态框特定样式 */
#unlock-modal .modal-content {
    max-width: 600px;
    text-align: center;
}

.lock-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
    padding: 20px;
    background-color: #F8FAFC;
    border-radius: 12px;
}

.lock-icon {
    font-size: 4rem;
    color: var(--warning-color);
}

.lock-text {
    text-align: left;
    flex: 1;
}

.lock-text p {
    margin-bottom: 10px;
    color: var(--gray-color);
    line-height: 1.6;
}

.previous-lesson-info {
    margin: 30px 0;
}

.previous-lesson-info h4 {
    font-size: 1.2rem;
    color: var(--dark-color);
    margin-bottom: 15px;
    text-align: left;
}

.lesson-card.small {
    max-width: 300px;
    margin: 0 auto;
    padding: 15px;
    background-color: #F0F7FF;
    border-left-color: var(--secondary-color);
}

.lesson-card.small .lesson-number {
    font-size: 1.5rem;
}

.lesson-card.small h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.lesson-card.small p {
    font-size: 0.9rem;
    margin-bottom: 10px;
}

#go-to-previous-lesson {
    background: linear-gradient(135deg, var(--secondary-color), #0EA5E9);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    margin-right: 10px;
}

#go-to-previous-lesson:hover {
    background: linear-gradient(135deg, #0EA5E9, #0369A1);
    transform: translateY(-2px);
}

#close-unlock-btn {
    background-color: #F1F5F9;
    color: var(--dark-color);
    border: 1px solid var(--border-color);
    padding: 12px 30px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
}

#close-unlock-btn:hover {
    background-color: #E2E8F0;
    border-color: #CBD5E1;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .lock-info {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .lock-text {
        text-align: center;
    }
    
    .previous-lesson-info h4 {
        text-align: center;
    }
    
    #unlock-modal .modal-footer {
        display: flex;
        flex-direction: column;
        gap: 15px;
    }
    
    #go-to-previous-lesson,
    #close-unlock-btn {
        width: 100%;
        margin-right: 0;
    }
}

#resource-modal .modal-header h2 {
    font-size: 1.5rem;
    color: var(--dark-color);
}

#close-resource-modal {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-color);
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

#close-resource-modal:hover {
    background-color: #F1F5F9;
    color: var(--dark-color);
}

#close-resource-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

#close-resource-btn:hover {
    background-color: #0F46D0;
}

/* 学习资源内容样式 */
.resource-content {
    padding: 10px 0;
}

.resource-content h3 {
    font-size: 1.4rem;
    color: var(--dark-color);
    margin-top: 30px;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
}

.resource-content h3:first-child {
    margin-top: 0;
}

.resource-content h4 {
    font-size: 1.2rem;
    color: var(--dark-color);
    margin-top: 20px;
    margin-bottom: 15px;
}

/* 语法参考样式 */
.syntax-section {
    margin-bottom: 30px;
}

.syntax-category {
    margin-bottom: 20px;
}

.syntax-items {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

.syntax-item {
    background-color: #F0F7FF;
    color: var(--primary-color);
    padding: 6px 12px;
    border-radius: 6px;
    font-weight: 500;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.95rem;
    display: inline-block;
}

/* 表格样式 */
.operator-table, .type-size-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 0.95rem;
}

.operator-table th, .operator-table td,
.type-size-table th, .type-size-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.operator-table th, .type-size-table th {
    background-color: #F8FAFC;
    font-weight: 600;
    color: var(--dark-color);
}

.operator-table tr:hover, .type-size-table tr:hover {
    background-color: #F8FAFC;
}

.operator-table td:first-child, .type-size-table td:first-child {
    font-weight: 600;
}

/* 标准库函数样式 */
.library-category {
    margin-bottom: 25px;
}

.library-category ul {
    list-style-type: none;
    padding-left: 10px;
}

.library-category li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.library-category li:before {
    content: "▶";
    color: var(--primary-color);
    position: absolute;
    left: 0;
}

.library-category code {
    background-color: #F1F5F9;
    color: var(--dark-color);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9em;
}

/* FAQ样式 */
.faq-list {
    margin-top: 20px;
}

.faq-item {
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.faq-question {
    padding: 15px 20px;
    background-color: #F8FAFC;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: space-between;
    user-select: none;
}

.faq-question:hover {
    background-color: #F1F5F9;
}

.faq-icon {
    transition: transform 0.3s ease;
    font-size: 0.8rem;
}

.faq-answer {
    padding: 15px 20px;
    background-color: white;
    border-top: 1px solid var(--border-color);
}

.faq-answer p {
    margin-bottom: 10px;
    color: var(--dark-color);
}

.faq-answer p:last-child {
    margin-bottom: 0;
}

.faq-answer ul {
    padding-left: 20px;
    margin: 10px 0;
}

.faq-answer li {
    margin-bottom: 5px;
    color: var(--dark-color);
}

/* 示例代码样式 */
.examples-list {
    margin-top: 20px;
}

.example-item {
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.example-item h4 {
    padding: 15px 20px;
    background-color: #F8FAFC;
    margin: 0;
    border-bottom: 1px solid var(--border-color);
}

.example-code {
    position: relative;
    background-color: #f8f9fa;
    padding: 20px;
    border: 1px solid #dee2e6;
    border-radius: 8px;
}

.example-code pre {
    margin: 0;
    overflow-x: auto;
}

.example-code code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.95rem;
    line-height: 1.5;
    color: #212529;
}

.example-code .copy-code-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 6px;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.example-code .copy-code-btn:hover {
    background-color: #0F46D0;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(22, 93, 255, 0.3);
}

.example-desc {
    padding: 15px 20px;
    background-color: white;
    margin: 0;
    color: var(--gray-color);
    font-size: 0.95rem;
}

/* 响应式资源内容 */
@media (max-width: 768px) {
    .resource-modal .modal-content {
        margin: 10px;
        max-height: 95vh;
    }
    
    .operator-table, .type-size-table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
    
    .syntax-items {
        justify-content: center;
    }
    
    .library-category ul {
        padding-left: 0;
    }
    
    .library-category li {
        padding-left: 15px;
    }
}