* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

/* 移动端基础优化：禁用 iOS 缩放、优化触摸体验 */
html {
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #f7f8fa;
    color: #333;
    line-height: 1.6;
    /* 移动端优化：提升字体渲染质量 */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* 移动端优化：允许内容撑高视口 */
    min-height: 100vh;
    min-height: 100dvh;
}

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

header {
    text-align: center;
    margin-bottom: 30px;
    padding: 30px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

header h1 {
    margin-bottom: 8px;
    font-size: 28px;
    font-weight: 600;
    color: #333;
}

header h1 a {
    color: inherit;
    text-decoration: none;
}

header p {
    color: #999;
    font-size: 15px;
}

.success-message {
    background: #f0fdf4;
    color: #22c55e;
    padding: 14px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    border: 1px solid #bbf7d0;
    font-size: 14px;
}

.error-message {
    background: #fef2f2;
    color: #ef4444;
    padding: 14px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    border: 1px solid #fecaca;
    font-size: 14px;
}

.sidebar {
    width: 240px;
    float: left;
    background: #fff;
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    margin-right: 24px;
}

.sidebar h3 {
    margin-bottom: 20px;
    color: #333;
    font-size: 16px;
    font-weight: 600;
}

.sidebar ul {
    list-style: none;
}

.sidebar li {
    margin-bottom: 6px;
}

.sidebar a {
    display: block;
    padding: 10px 14px;
    color: #666;
    text-decoration: none;
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.2s ease;
}

.sidebar a:hover,
.sidebar a.active {
    background: #f0f0f0;
    color: #333;
}

.manage-link {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid #eee;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.manage-link a {
    font-size: 14px;
    color: #666;
    font-weight: 500;
    display: block;
    padding: 10px 14px;
    border-radius: 6px;
    background: #f7f8fa;
}

.manage-link a:hover {
    background: #f0f0f0;
    color: #333;
}

.main {
    overflow: hidden;
}

.upload-section,
.files-section,
.settings-section {
    background: #fff;
    border-radius: 12px;
    padding: 28px;
    margin-bottom: 20px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.upload-section h3,
.files-section h3,
.settings-section h3 {
    margin-bottom: 24px;
    color: #333;
    font-size: 18px;
    font-weight: 600;
    border-bottom: 1px solid #eee;
    padding-bottom: 16px;
}

.upload-section form {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: flex-end;
}

.upload-section .form-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.upload-section .form-group label {
    font-size: 13px;
    font-weight: 500;
    color: #555;
    margin-left: 2px;
}

.upload-section select,
.upload-section input[type="file"],
.upload-section button,
.settings-section .form-group input[type="text"],
.settings-section .btn {
    padding: 12px 16px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    color: #333;
    transition: all 0.2s ease;
}

.upload-section select:focus,
.upload-section input[type="file"]:focus,
.settings-section .form-group input[type="text"]:focus {
    outline: none;
    border-color: #666;
}

.extract-method {
    width: 100%;
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 8px;
}

.extract-method label {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 14px;
    color: #555;
}

.extract-method label:hover {
    color: #333;
}

.upload-section button,
.settings-section .btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    cursor: pointer;
    font-weight: 500;
    padding: 12px 28px;
}

.upload-section button:hover,
.settings-section .btn:hover {
    opacity: 0.9;
}

.upload-tips {
    margin-top: 20px;
    padding: 18px;
    background: #f7f8fa;
    border-radius: 8px;
    font-size: 14px;
    color: #666;
    border-left: 3px solid #667eea;
}

.upload-tips p {
    margin-bottom: 8px;
}

.upload-tips p:last-child {
    margin-bottom: 0;
}

.upload-tips strong {
    color: #333;
}

.upload-tips code {
    background: #fff;
    color: #667eea;
    padding: 3px 8px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    border: 1px solid #eee;
}

.file-list {
    list-style: none;
}

.file-list li {
    padding: 16px 0;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.file-list li:last-child {
    border-bottom: none;
}

.file-list a {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
}

.file-list a:hover {
    color: #667eea;
}

.file-list .file-meta {
    font-size: 13px;
    color: #888;
    margin-bottom: 10px;
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.file-list .file-meta span {
    white-space: nowrap;
}

.file-list .actions {
    display: flex;
    gap: 8px;
}

.btn-learn,
.btn-edit,
.btn-delete {
    padding: 10px 16px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    /* 触控优化 */
    min-height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
}

.btn-learn {
    background: #22c55e;
    color: white;
}

.btn-learn:hover {
    background: #16a34a;
}

.btn-edit {
    background: #3b82f6;
    color: white;
}

.btn-edit:hover {
    background: #2563eb;
}

.btn-delete {
    background: #ef4444;
    color: white;
}

.btn-delete:hover {
    background: #dc2626;
}

.empty {
    text-align: center;
    color: #999;
    padding: 40px;
    font-size: 14px;
}

.learn-container .main {
    width: 100%;
}

.learn-content {
    background: #fff;
    border-radius: 12px;
    padding: 32px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.document-content {
    font-size: 15px;
    line-height: 1.6;
    color: #333;
    word-break: break-all;
    padding: 20px 24px;
    background: #fafbfc;
    border-radius: 8px;
    border: 1px solid #eee;
}

.document-content br {
    margin: 0;
    padding: 0;
}

/* 控制连续 br 标签的间距（段落间距） */
.document-content br + br {
    display: block;
    margin-top: 0.4em;
}

.answer-input {
    display: inline-block;
    min-width: 60px;
    padding: 4px 8px;
    border: 1px solid #ccc;
    border-bottom: 2px solid #667eea;
    border-radius: 4px;
    font-size: 14px;
    text-align: center;
    transition: all 0.2s ease;
    margin: 0 2px;
    background: #fff;
}

.answer-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.1);
}

.answer-input.input-correct {
    border-color: #22c55e;
    border-bottom-color: #22c55e;
    background: #f0fdf4;
}

.answer-input.input-wrong {
    border-color: #ef4444;
    border-bottom-color: #ef4444;
    background: #fef2f2;
}

.key-point {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 500;
    margin: 0 2px;
    font-size: 14px;
    display: inline-block;
}

.inline-answer {
    color: #ef4444;
    font-weight: 500;
    font-size: 13px;
    margin-left: 4px;
}

.learn-content .actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid #f0f0f0;
}

.learn-content button {
    padding: 12px 28px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.learn-content button:first-child {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.learn-content button:nth-child(2) {
    background: #22c55e;
    color: white;
}

.learn-content button:nth-child(3) {
    background: #f59e0b;
    color: white;
}

.learn-content button:nth-child(4) {
    background: #9ca3af;
    color: white;
}

.learn-content button:hover {
    opacity: 0.9;
}

.category-form {
    background: #fff;
    border-radius: 12px;
    padding: 28px;
    margin-bottom: 20px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.category-form h3 {
    margin-bottom: 24px;
    color: #333;
    border-bottom: 1px solid #eee;
    padding-bottom: 16px;
    font-size: 18px;
    font-weight: 600;
}

.category-form input,
.category-form textarea {
    display: block;
    width: 100%;
    padding: 12px;
    margin-bottom: 18px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    color: #333;
    transition: all 0.2s ease;
}

.category-form input:focus,
.category-form textarea:focus {
    outline: none;
    border-color: #666;
}

.category-form textarea {
    height: 100px;
    resize: vertical;
}

.category-form button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 15px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
}

.category-form button:hover {
    opacity: 0.9;
}

.category-list {
    background: #fff;
    border-radius: 12px;
    padding: 28px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.category-list table {
    width: 100%;
    border-collapse: collapse;
}

.category-list th,
.category-list td {
    padding: 14px 18px;
    text-align: left;
    border-bottom: 1px solid #f0f0f0;
}

.category-list th {
    background: #f7f8fa;
    font-weight: 600;
    color: #666;
    font-size: 14px;
}

.category-list tr:hover {
    background: #fafafa;
}

.back-link {
    margin-top: 20px;
    text-align: center;
}

.back-link a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    padding: 10px 20px;
    border-radius: 6px;
    background: #f0f0f0;
    display: inline-block;
    transition: all 0.2s ease;
}

.back-link a:hover {
    background: #e5e5e5;
}

.settings-section .form-group {
    margin-bottom: 24px;
}

.settings-section .form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
    font-size: 14px;
}

.settings-section .form-group small {
    display: block;
    color: #999;
    margin-top: 6px;
    font-size: 13px;
}

.info-box,
.status-box {
    background: #f7f8fa;
    padding: 20px;
    border-radius: 8px;
    margin-top: 24px;
}

.info-box h4,
.status-box h4 {
    margin-bottom: 14px;
    color: #333;
    font-size: 16px;
    font-weight: 600;
}

.info-box ul {
    list-style: none;
    padding-left: 0;
}

.info-box ul li {
    margin-bottom: 10px;
    color: #666;
    font-size: 14px;
}

.status-on {
    color: #22c55e;
    font-weight: 600;
    font-size: 15px;
}

.status-off {
    color: #999;
    font-weight: 600;
    font-size: 15px;
}

.settings-section code {
    background: #fff;
    color: #667eea;
    padding: 3px 8px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-weight: 500;
    font-size: 13px;
    border: 1px solid #eee;
}

.question-number {
    display: inline-block;
    background: #f0f0f0;
    color: #666;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 12px;
}

.pagination-info {
    background: #f7f8fa;
    padding: 16px 20px;
    border-radius: 8px;
    margin-bottom: 24px;
    text-align: center;
    font-size: 15px;
    color: #666;
}

.pagination-info strong {
    color: #333;
    font-weight: 600;
}

.pagination {
    display: flex;
    gap: 8px;
    justify-content: center;
    align-items: center;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid #f0f0f0;
    flex-wrap: wrap;
}

.page-btn {
    display: inline-block;
    padding: 10px 18px;
    background: #fff;
    color: #666;
    text-decoration: none;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.2s ease;
    cursor: pointer;
}

.page-btn:hover {
    background: #f7f8fa;
    border-color: #999;
    color: #333;
}

.page-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: transparent;
    font-weight: 600;
}

.page-btn.active:hover {
    opacity: 0.9;
}

.page-dots {
    padding: 0 8px;
    color: #999;
    font-size: 18px;
    letter-spacing: 2px;
}

@media (max-width: 768px) {
    /* ====== 基础布局优化 ====== */
    .container {
        padding: 12px;
        max-width: 100%;
    }
    
    header {
        padding: 18px 14px;
        margin-bottom: 16px;
        border-radius: 12px;
        text-align: center;
    }
    
    header h1 {
        font-size: 20px;
        line-height: 1.4;
        margin-bottom: 4px;
    }
    
    header p {
        font-size: 13px;
        line-height: 1.4;
        color: #888;
    }

    /* ====== 侧边栏改为全宽折叠式 ====== */
    .sidebar {
        width: 100%;
        float: none;
        margin: 0 0 16px 0;
        padding: 14px;
        border-radius: 12px;
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    }
    
    /* 侧边栏分类列表默认折叠 */
    .sidebar .category-list {
        display: none;
        margin-top: 12px;
        padding-top: 12px;
        border-top: 1px solid #eee;
    }
    
    .sidebar.open .category-list {
        display: block;
    }
    
    /* 折叠触发按钮 */
    .sidebar-toggle {
        display: flex;
        justify-content: space-between;
        align-items: center;
        cursor: pointer;
        user-select: none;
        -webkit-user-select: none;
        padding: 4px 0;
    }
    
    .sidebar-toggle::after {
        content: '展开分类 ▾';
        font-size: 13px;
        color: #667eea;
        font-weight: 500;
        transition: transform 0.3s;
    }
    
    .sidebar.open .sidebar-toggle::after {
        content: '收起分类 ▴';
    }
    
    .sidebar h3 {
        margin-bottom: 0;
        font-size: 15px;
    }

    .sidebar a {
        padding: 11px 14px;
        font-size: 14px;
        border-radius: 8px;
        margin-bottom: 4px;
        display: block;
        min-height: 40px;
        line-height: 1.4;
    }

    .manage-link {
        margin-top: 14px;
        padding-top: 14px;
        gap: 10px;
    }

    .manage-link a {
        padding: 11px 14px;
        min-height: 40px;
        border-radius: 8px;
        font-size: 14px;
    }

    /* ====== 上传区域优化 ====== */
    .upload-section,
    .files-section,
    .settings-section,
    .learn-content,
    .category-form,
    .category-list {
        padding: 18px 14px;
        border-radius: 12px;
        margin-bottom: 16px;
    }
    
    .upload-section h3,
    .files-section h3,
    .settings-section h3,
    .category-form h3 {
        font-size: 17px;
        margin-bottom: 16px;
        padding-bottom: 12px;
    }

    .upload-section form {
        flex-direction: column;
        align-items: stretch;
        gap: 14px;
    }

    .upload-section .form-group {
        width: 100%;
    }

    .upload-section .form-group label {
        font-size: 14px;
        margin-bottom: 2px;
    }
    
    .upload-section select,
    .upload-section input[type="file"] {
        width: 100%;
        padding: 12px 14px;
        font-size: 15px;
    }
    
    .upload-section input[type="file"] {
        border: 1px dashed #ccc;
        padding: 14px;
        text-align: center;
        background: #fafbfc;
    }
    
    .upload-section button {
        width: 100%;
        padding: 14px 20px;
        font-size: 15px;
        min-height: 48px;
        border-radius: 10px;
    }
    
    .extract-method {
        flex-direction: column;
        gap: 10px;
        padding: 12px;
        background: #f7f8fa;
        border-radius: 8px;
    }
    
    .extract-method label {
        font-size: 14px;
        padding: 8px 12px;
        background: #fff;
        border-radius: 6px;
        display: flex;
        align-items: center;
        gap: 8px;
        min-height: 38px;
    }

    .upload-tips {
        padding: 14px;
        font-size: 13px;
        line-height: 1.6;
    }

    /* ====== 文件列表改为卡片式 ====== */
    .file-list {
        display: flex;
        flex-direction: column;
        gap: 14px;
    }
    
    .file-list li {
        flex-direction: column;
        align-items: stretch;
        padding: 16px;
        border: 1px solid #eee;
        border-radius: 12px;
        background: #fafbfc;
        gap: 10px;
        transition: box-shadow 0.2s;
    }
    
    .file-list li:active {
        box-shadow: 0 2px 8px rgba(102, 126, 234, 0.15);
    }
    
    .file-list li:last-child {
        border-bottom: 1px solid #eee;
    }
    
    .file-list a {
        font-size: 16px;
        display: block;
        text-align: center;
        margin-bottom: 4px;
        line-height: 1.4;
        word-break: break-all;
        font-weight: 600;
        color: #333;
    }
    
    .file-list .file-meta {
        text-align: center;
        font-size: 13px;
        color: #999;
        margin-bottom: 8px;
        justify-content: center;
        gap: 14px;
        flex-wrap: wrap;
    }
    
    .file-list .file-meta span {
        white-space: nowrap;
        padding: 2px 8px;
        background: #fff;
        border-radius: 10px;
        border: 1px solid #eee;
    }
    
    .file-list .actions {
        justify-content: center;
        flex-wrap: nowrap;
        gap: 8px;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    }
    
    .btn-learn,
    .btn-edit,
    .btn-delete {
        padding: 12px 14px;
        font-size: 15px;
        border-radius: 10px;
        flex: 1;
        text-align: center;
        min-height: 44px;
        min-width: 0;
        white-space: nowrap;
    }

    /* ====== 学习页优化 ====== */
    .learn-content {
        padding: 16px 14px;
    }
    
    .pagination-info {
        padding: 12px 14px;
        font-size: 14px;
        line-height: 1.5;
    }
    
    .document-content {
        padding: 16px;
        font-size: 16px;
        line-height: 1.8;
        background: #fff;
        border: 1px solid #eee;
        border-radius: 10px;
    }
    
    .answer-input {
        min-width: 90px;
        font-size: 16px;
        padding: 6px 10px;
        height: 36px;
    }
    
    .learn-content .actions {
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 20px;
        padding-top: 16px;
    }
    
    .learn-content button {
        flex: 1 1 calc(50% - 5px);
        padding: 14px 10px;
        font-size: 15px;
        min-width: 0;
        min-height: 48px;
        border-radius: 10px;
    }

    /* ====== 分页组件优化 ====== */
    .pagination {
        gap: 6px;
        margin-top: 20px;
        padding-top: 16px;
        justify-content: center;
    }
    
    .page-btn {
        padding: 10px 12px;
        font-size: 14px;
        border-radius: 8px;
        min-width: 52px;
        text-align: center;
        min-height: 40px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        flex-wrap: nowrap;
    }
    
    .page-dots {
        padding: 0 2px;
    }

    /* ====== 分类表格改为响应式卡片 ====== */
    .category-list {
        overflow: visible;
    }
    
    .category-list table {
        min-width: 100%;
        display: block;
    }
    
    .category-list thead {
        display: none;
    }
    
    .category-list tbody {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }
    
    .category-list tr {
        display: flex;
        flex-direction: column;
        padding: 14px;
        background: #fafbfc;
        border: 1px solid #eee;
        border-radius: 10px;
        gap: 8px;
    }
    
    .category-list tr:hover {
        background: #fafbfc;
    }
    
    .category-list td {
        padding: 4px 0;
        border-bottom: none;
        font-size: 14px;
        line-height: 1.5;
    }
    
    .category-list td:first-child {
        font-weight: 600;
        font-size: 15px;
        color: #333;
    }
    
    .category-list td::before {
        content: attr(data-label) '：';
        color: #999;
        font-weight: normal;
        font-size: 12px;
    }
    
    .category-list td:last-child {
        display: flex;
        gap: 8px;
        justify-content: flex-end;
        margin-top: 4px;
    }

    /* ====== 设置页优化 ====== */
    .settings-section .form-group input[type="text"] {
        width: 100%;
        padding: 12px 14px;
        font-size: 15px;
    }
    
    .settings-section .btn {
        width: 100%;
        padding: 14px;
        font-size: 15px;
        min-height: 48px;
    }

    /* ====== 编辑模式工具栏优化 ====== */
    .edit-toolbar {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
        padding: 14px;
        border-radius: 10px;
    }
    
    .edit-toolbar .edit-title {
        font-size: 16px;
        text-align: center;
        margin-right: 0;
    }
    
    .edit-toolbar #selectionIndicator {
        font-size: 13px;
        text-align: center;
        word-break: break-all;
        margin-left: 0;
        padding: 6px 10px;
    }
    
    .edit-toolbar button {
        width: 100%;
        padding: 12px 16px;
        font-size: 15px;
        min-height: 46px;
        border-radius: 8px;
    }
    
    .edit-hint {
        font-size: 13px;
        padding: 12px;
        line-height: 1.6;
    }
    
    .edit-mode-content {
        font-size: 16px;
        line-height: 1.8;
        padding: 16px;
    }
    
    .edit-mode-content .edit-blank {
        padding: 2px 6px;
        margin: 0 2px;
    }

    /* ====== Toast 提示优化 ====== */
    .toast {
        left: 16px;
        right: 16px;
        top: 20px;
        font-size: 14px;
        padding: 12px 16px;
        text-align: center;
        border-radius: 10px;
    }
    
    /* ====== 删除确认框移动端优化 ====== */
    .blank-delete-confirm {
        left: 50% !important;
        top: 50% !important;
        transform: translate(-50%, -50%);
        width: calc(100% - 32px);
        max-width: 320px;
        padding: 18px;
    }
    
    .blank-delete-confirm p {
        font-size: 15px;
        margin-bottom: 16px;
        text-align: center;
    }
    
    .blank-delete-confirm button {
        flex: 1;
        padding: 12px 16px;
        font-size: 15px;
        min-height: 44px;
        border-radius: 8px;
    }
}

/* 针对更小屏幕（iPhone SE 等）的优化 */
@media (max-width: 380px) {
    .container {
        padding: 10px;
    }
    
    header h1 {
        font-size: 20px;
    }
    
    .learn-content button {
        flex: 1 1 100%;
        font-size: 13px;
        padding: 12px;
    }
    
    .btn-learn,
    .btn-edit,
    .btn-delete {
        font-size: 13px;
        padding: 9px 14px;
    }
    
    .page-btn {
        padding: 8px 10px;
        font-size: 12px;
    }
    
    .document-content {
        font-size: 14px;
        padding: 14px;
    }
}