/* 全局样式 */
* {
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

/* 导航栏样式 - 强制覆盖Bootstrap */
.navbar {
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* 统一品牌名称样式 - 进一步加大 */
.navbar .navbar-brand {
    font-size: 1.4rem !important;
    font-weight: 900 !important;
    text-shadow: none !important;
}

/* 主页导航栏背景色 - 蓝色渐变 */
.navbar.navbar-dark.bg-primary {
    background: linear-gradient(45deg, #007bff, #0056b3) !important;
    background-color: #007bff !important;
    background-image: none !important;
}

/* 小学页面导航栏背景色 - 蓝色（与初中一致） */
.navbar.navbar-dark.bg-primary {
    background: #007bff !important;
    background-color: #007bff !important;
    background-image: none !important;
}

/* 小学页面导航栏文字 - 白色 */
.navbar.navbar-dark.bg-primary .navbar-brand,
.navbar.navbar-dark.bg-primary .navbar-nav .nav-link,
.navbar.navbar-dark.bg-primary .navbar-text {
    color: #ffffff !important;
    font-weight: 700 !important;
    font-size: 1.1rem !important;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3) !important;
}

/* 小学页面品牌logo进一步加大 */
.navbar.navbar-dark.bg-primary .navbar-brand {
    font-size: 1.4rem !important;
    font-weight: 700 !important;
    color: #ffffff !important;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3) !important;
}

.navbar.navbar-dark.bg-primary .navbar-nav .nav-link:hover,
.navbar.navbar-dark.bg-primary .navbar-nav .nav-link:focus {
    color: #e6f3ff !important;
    background-color: rgba(255, 255, 255, 0.1) !important;
    border-radius: 5px;
}

.navbar.navbar-dark.bg-primary .navbar-nav .nav-link.active {
    color: #e6f3ff !important;
    font-weight: bold;
    background-color: rgba(255, 255, 255, 0.2) !important;
    border-radius: 5px;
}

/* 导航栏文字颜色设置 - 使用醒目的浅绿色 */
.navbar .navbar-brand,
.navbar .navbar-nav .nav-link,
.navbar .navbar-text {
    color: #90EE90 !important;
    font-weight: 800 !important;
    font-size: 1.1rem !important;
    text-shadow: none !important;
}

.navbar .navbar-nav .nav-link:hover,
.navbar .navbar-nav .nav-link:focus {
    color: #98FB98 !important;
    background-color: rgba(255, 255, 255, 0.1) !important;
    border-radius: 5px;
}

.navbar .navbar-nav .nav-link.active {
    color: #98FB98 !important;
    font-weight: bold;
    background-color: rgba(255, 255, 255, 0.2) !important;
    border-radius: 5px;
}

/* 汉堡菜单按钮 */
.navbar .navbar-toggler {
    border-color: rgba(255, 255, 255, 0.3);
}

.navbar .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* 下拉菜单样式 */
.navbar .navbar-nav .dropdown-menu {
    background-color: rgba(0, 0, 0, 0.9) !important;
    border: none;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.navbar .navbar-nav .dropdown-item {
    color: white !important;
    transition: all 0.3s ease;
}

.navbar .navbar-nav .dropdown-item:hover {
    background-color: rgba(255, 255, 255, 0.1) !important;
    color: white !important;
}

/* 主容器 */
.container {
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    padding: 2rem;
    margin-top: 2rem;
    margin-bottom: 2rem;
    position: relative;
    z-index: 2;
}

/* 欢迎区域 */
.hero-section {
    background: linear-gradient(45deg, #f093fb 0%, #f5576c 100%);
    color: white;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.hero-section h1 {
    color: white !important;
}

.user-stats .badge {
    padding: 0.7rem 1.2rem;
    border-radius: 25px;
    font-size: 0.9rem;
}

/* 科目卡片样式 */
.subject-card {
    border: none;
    border-radius: 15px;
    transition: all 0.3s ease;
    cursor: pointer;
    background: white;
}

.subject-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.subject-card .card-body {
    padding: 2rem 1.5rem;
}

.subject-icon {
    transition: transform 0.3s ease;
}

.subject-card:hover .subject-icon {
    transform: scale(1.1);
}

/* 进度条样式 */
.progress {
    height: 8px;
    border-radius: 10px;
    background-color: #f0f0f0;
}

.progress-bar {
    border-radius: 10px;
    transition: width 0.3s ease;
}

/* 按钮样式 */
.btn {
    border-radius: 25px;
    padding: 0.6rem 1.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* 快速入口样式 */
.quick-access .card {
    border: none;
    border-radius: 15px;
    transition: all 0.3s ease;
    cursor: pointer;
}

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

/* 页脚样式 */
footer {
    border-radius: 15px 15px 0 0;
    margin-top: 3rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        margin: 1rem;
        padding: 1rem;
    }
    
    .hero-section {
        padding: 2rem 1rem !important;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .subject-card .card-body {
        padding: 1.5rem 1rem;
    }
    
    .user-stats .badge {
        font-size: 0.8rem;
        padding: 0.5rem 1rem;
        margin-bottom: 0.5rem;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.subjects-section {
    animation: fadeInUp 0.8s ease-out;
}

.quick-access {
    animation: fadeInUp 1s ease-out;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 成功提示样式 */
.alert-custom {
    border-radius: 15px;
    border: none;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(45deg, #007bff, #0056b3);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(45deg, #0056b3, #004085);
}

/* 白色背景导航栏的文字颜色修复 */
.navbar.navbar-light .navbar-brand,
.navbar.navbar-light .navbar-nav .nav-link,
.navbar.navbar-light .navbar-text {
    color: #212529 !important;
    font-weight: 800 !important;
    font-size: 1.1rem !important;
    text-shadow: none !important;
}

/* 白色导航栏品牌logo进一步加大 */
.navbar.navbar-light .navbar-brand {
    font-size: 1.4rem !important;
    font-weight: 900 !important;
    text-shadow: none !important;
}

.navbar.navbar-light .navbar-nav .nav-link:hover {
    color: #007bff !important;
    background-color: rgba(0, 123, 255, 0.1) !important;
    border-radius: 5px;
}

.navbar.navbar-light .navbar-nav .nav-link.active {
    color: #007bff !important;
    font-weight: bold !important;
    background-color: rgba(0, 123, 255, 0.15) !important;
    border-radius: 5px;
}

/* 固定导航栏页面的统一间距修复 */
/* 解决固定导航栏遮挡内容的问题 */

/* 为不同类型的容器提供合适的顶部间距 */
.analytics-header {
    margin-top: 100px !important; /* 分析页面的头部 */
}

.practice-container {
    margin-top: 175px !important; /* 练习页面需要充足的空间 */
}

.review-container {
    margin-top: 100px !important;
}

.progress-container {
    margin-top: 100px !important;
}

.ai-hero {
    margin-top: 100px !important;
}

/* 移动设备的响应式调整 */
@media (max-width: 768px) {
    .analytics-header,
    .practice-container,
    .review-container,
    .progress-container,
    .ai-hero {
        margin-top: 90px !important;
        padding-top: 1rem !important;
    }
    
    /* 移动端导航栏字体微调 */
    .navbar .navbar-brand {
        font-size: 1.2rem !important;
    }
    
    .navbar .navbar-nav .nav-link,
    .navbar .navbar-text {
        font-size: 1rem !important;
    }
}

/* 响应式汉堡菜单图标修复 - 确保在浅色导航栏上可见 */
.navbar.navbar-light .navbar-toggler {
    border-color: rgba(0, 0, 0, 0.1) !important;
}

.navbar.navbar-light .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2833, 37, 41, 0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

/* 暗色导航栏保持原有的白色图标 */
.navbar.navbar-dark .navbar-toggler {
    border-color: rgba(255, 255, 255, 0.3);
}

.navbar.navbar-dark .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Pulse动画效果 - 用于高亮年级选择提示 */
@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* 年级选择提示样式增强 */
.grade-selection-highlight {
    animation: pulse 1s ease-in-out 3;
    box-shadow: 0 0 20px rgba(255, 193, 7, 0.8) !important;
} 

/* 从 index.html 提取的内联样式 */
/* 全局字体优化 - 解决字体模糊问题 */
* {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    font-feature-settings: "liga", "kern";
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-weight: 400;
    line-height: 1.6;
    letter-spacing: 0.01em;
}

/* 标题字体优化 */
h1, h2, h3, h4, h5, h6 {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: 0.02em;
}

/* 导航栏字体优化 */
.navbar .navbar-brand,
.navbar .navbar-nav .nav-link {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    font-weight: 500;
    font-size: 1rem;
    letter-spacing: 0.01em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.navbar .navbar-brand {
    font-size: 1.25rem;
    font-weight: 600;
}

/* 恢复漂亮的蓝色背景导航栏 */
.navbar.navbar-dark.bg-primary {
    background: linear-gradient(45deg, #007bff, #0056b3) !important;
    background-color: #007bff !important;
}

/* 清晰白色字体 - 无阴影、加粗、醒目 */
.navbar .navbar-brand,
.navbar .navbar-nav .nav-link,
.navbar .navbar-text {
    color: #ffffff !important;
    font-weight: bold !important;
    font-size: 1.1rem !important;
    text-shadow: none !important;
    letter-spacing: 0.02em !important;
    -webkit-font-smoothing: antialiased !important;
    -moz-osx-font-smoothing: grayscale !important;
    background: none !important;
}

.navbar .navbar-brand {
    font-size: 1.4rem !important;
    font-weight: 900 !important;
    color: #ffffff !important;
}

.navbar .navbar-nav .nav-link:hover {
    color: #f8f9fa !important;
    background: none !important;
    text-decoration: none !important;
}

/* 世界级天才培养链接特殊样式 */
.nav-item .world-class-genius-link {
    background: linear-gradient(45deg, #ffd700, #ff6b6b) !important;
    color: #fff !important;
    border-radius: 20px !important;
    padding: 8px 15px !important;
    font-weight: bold !important;
    text-shadow: none !important;
    margin-left: 10px !important;
    text-decoration: none !important;
    transition: all 0.3s ease !important;
}

.nav-item .world-class-genius-link:hover {
    background: linear-gradient(45deg, #ffed4e, #ff8a80) !important;
    color: #fff !important;
    transform: scale(1.05) !important;
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.6) !important;
}

/* 世界级天才培养动画 */
@keyframes glow {
    0% {
        box-shadow: 0 0 5px rgba(255, 215, 0, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(255, 215, 0, 0.8), 0 0 30px rgba(255, 107, 107, 0.6);
    }
    100% {
        box-shadow: 0 0 5px rgba(255, 215, 0, 0.5);
    }
}

.nav-item .world-class-genius-link {
    animation: glow 2s ease-in-out infinite alternate !important;
}

/* 确保导航栏链接正确显示 */
.navbar-nav .nav-link {
    color: #ffffff !important;
    background: none !important;
}

.navbar-nav .nav-link:hover {
    color: #f8f9fa !important;
    background: rgba(255, 255, 255, 0.1) !important;
    border-radius: 5px !important;
}

/* 彻底去除深蓝色圆角框 - 针对Bootstrap特定类 */
.navbar-dark .navbar-collapse,
.navbar-dark .navbar-nav,
.navbar-dark .collapse.show,
.navbar-dark .collapsing {
    background: none !important;
    background-color: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
}

/* 移除可能的深色边框和阴影 */
.navbar-toggler:focus,
.navbar-toggler:active,
.navbar-toggler.active {
    box-shadow: none !important;
    border-color: rgba(255, 255, 255, 0.5) !important;
}

/* 精确定位并去除深蓝色圆角矩形框 */
.navbar .navbar-collapse,
.navbar .navbar-nav,
.navbar .collapse {
    background: none !important;
    background-color: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
}

/* 强制导航栏保持蓝色背景 */
.navbar,
.navbar .container {
    background: linear-gradient(45deg, #007bff, #0056b3) !important;
}

/* 恢复悬停动画效果 */
.navbar .navbar-nav .nav-link:hover {
    color: #f8f9fa !important;
    background: rgba(255, 255, 255, 0.1) !important;
    border-radius: 5px !important;
    transition: all 0.3s ease !important;
}

/* 修复手机菜单按钮在蓝色背景上的显示 */
.navbar-toggler {
    border-color: rgba(255, 255, 255, 0.5) !important;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

/* 彻底去除深蓝色圆角框 - 精确定位navbarNav元素 */
#navbarNav,
#navbarNav.collapse,
#navbarNav.navbar-collapse,
.navbar-collapse#navbarNav {
    background: none !important;
    background-color: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
}

/* 内容区域字体优化 */
.hero-section h1 {
    font-weight: 700;
    letter-spacing: 0.02em;
    -webkit-font-smoothing: antialiased;
}

.hero-section p {
    font-weight: 400;
    letter-spacing: 0.01em;
}

/* 卡片内容字体优化 */
.card-title {
    font-weight: 600;
    letter-spacing: 0.01em;
}

.card-text {
    font-weight: 400;
    line-height: 1.5;
}

/* 按钮字体优化 */
.btn {
    font-weight: 500;
    letter-spacing: 0.01em;
    -webkit-font-smoothing: antialiased;
}

/* 徽章字体优化 */
.badge {
    font-weight: 500;
    letter-spacing: 0.01em;
}

/* 世界级天才培养系统卡片样式修改 */
.genius-cultivation-card {
    background: linear-gradient(135deg, #ffffff, #f8f9fa) !important; /* 白色背景 */
    color: #ff6600 !important; /* 橙色文字 */
    border: 2px solid #ff6600 !important; /* 橙色边框 */
}

.genius-cultivation-card h2 {
    color: #ff6600 !important; /* 标题橙色 */
    text-shadow: 1px 1px 2px rgba(255, 102, 0, 0.1) !important;
}

.genius-cultivation-card .subtitle {
    color: #ff8533 !important; /* 副标题稍浅的橙色 */
}

.genius-cultivation-card .feature-module {
    background: rgba(255, 102, 0, 0.1) !important; /* 功能模块浅橙色背景 */
    color: #ff6600 !important;
    border: 1px solid rgba(255, 102, 0, 0.3) !important;
}

.genius-cultivation-card .feature-module h4 {
    color: #ff6600 !important;
}

.genius-cultivation-card .feature-module p {
    color: #ff8533 !important;
}

.genius-cultivation-card .stats-section {
    background: rgba(255, 102, 0, 0.05) !important; /* 统计区域极浅橙色 */
}

.genius-cultivation-card .stat-item {
    color: #ff6600 !important;
}

.genius-cultivation-card .stat-number {
    color: #ff4400 !important; /* 数字深橙色 */
    font-weight: bold;
}

.genius-cultivation-card .btn-primary {
    background: linear-gradient(135deg, #ff6600, #ff8533) !important;
    border-color: #ff6600 !important;
    color: white !important;
}

.genius-cultivation-card .btn-outline-primary {
    color: #ff6600 !important;
    border-color: #ff6600 !important;
    background: transparent !important;
}

.genius-cultivation-card .btn-outline-primary:hover {
    background: #ff6600 !important;
    color: white !important;
}

/* 图标颜色调整 */
.genius-cultivation-card .icon {
    color: #ff6600 !important;
}

.genius-cultivation-card .crown-icon {
    color: #ffd700 !important; /* 皇冠图标保持金色 */
}

/* 世界级天才培养卡片样式修改 - 橙色文字白色背景 */
.world-class-genius-section .card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 50%, #ffffff 100%) !important; /* 白色渐变背景 */
    color: #ff6600 !important; /* 橙色文字 */
    border: 3px solid #ff6600 !important; /* 橙色边框 */
    box-shadow: 0 10px 30px rgba(255, 102, 0, 0.3) !important; /* 橙色阴影 */
}

.world-class-genius-section .card-body {
    color: #ff6600 !important;
}

/* 主标题样式 */
.world-class-genius-section h2 {
    color: #ff6600 !important;
    text-shadow: 1px 1px 3px rgba(255, 102, 0, 0.3) !important;
}

/* 副标题样式 */
.world-class-genius-section .lead {
    color: #ff8533 !important;
    text-shadow: 1px 1px 2px rgba(255, 102, 0, 0.2) !important;
}

/* 功能模块样式 */
.world-class-genius-section .feature-box {
    background: rgba(255, 102, 0, 0.1) !important;
    border: 1px solid rgba(255, 102, 0, 0.3) !important;
    color: #ff6600 !important;
}

.world-class-genius-section .feature-box h6 {
    color: #ff6600 !important;
}

.world-class-genius-section .feature-box small {
    color: #ff8533 !important;
}

/* 统计数据样式 */
.world-class-genius-section .stat-item h3 {
    color: #3182ce !important; /* 改为柔和蓝色，替代之前的 #ff4400 */
}

.world-class-genius-section .stat-item small {
    color: #4a5568 !important; /* 改为深灰色，替代之前的 #ff8533 */
}

/* 图标颜色全部改为护眼色 */
.world-class-genius-section .fas.fa-brain {
    color: #4299e1 !important; /* 替代之前的 #ff6600 */
}

.world-class-genius-section .fas.fa-flask {
    color: #4299e1 !important; /* 替代之前的 #ff6600 */
}

.world-class-genius-section .fas.fa-globe {
    color: #4299e1 !important; /* 替代之前的 #ff6600 */
}

.world-class-genius-section .fas.fa-graduation-cap {
    color: #4299e1 !important; /* 替代之前的 #ff6600 */
}

/* 清除橙色按钮样式 */
.world-class-genius-section .btn-light {
    background: linear-gradient(135deg, #4299e1, #3182ce) !important; /* 替代橙色渐变 */
    border-color: #3182ce !important;
    color: white !important;
    font-weight: 600 !important;
}

.world-class-genius-section .btn-light:hover {
    background: linear-gradient(135deg, #3182ce, #2c5282) !important; /* 替代橙色hover */
    color: white !important;
}

.world-class-genius-section .btn-outline-light {
    color: #3182ce !important; /* 替代 #ff6600 */
    border-color: #3182ce !important;
    background: transparent !important;
}

.world-class-genius-section .btn-outline-light:hover {
    background: #3182ce !important; /* 替代 #ff6600 */
    border-color: #3182ce !important;
    color: white !important;
}

/* 确保卡片边框不是橙色 */
.world-class-genius-section .card {
    border: 1px solid #e0f2fe !important; /* 淡蓝色边框，替代任何橙色边框 */
}

/* 清除任何内联橙色样式 */
.world-class-genius-section [style*="color: #ff"] {
    color: #4a5568 !important;
}

.world-class-genius-section [style*="border: 2px solid #ff"] {
    border: 1px solid #e0f2fe !important;
}

/* 恢复原来的布局样式，但使用护眼颜色 */
.world-class-system {
    background: linear-gradient(135deg, #f8fffe 0%, #f0f9ff 50%, #fefefe 100%) !important;
    border: 1px solid #e0f2fe !important;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1) !important;
    border-radius: 15px !important;
}

/* 功能模块恢复原来的紧凑布局 */
.world-class-system .feature-box {
    background: rgba(224, 242, 254, 0.4) !important;
    border: 1px solid rgba(224, 242, 254, 0.6) !important;
    min-height: 120px !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
    transition: all 0.3s ease !important;
}

.world-class-system .feature-box:hover {
    background: rgba(224, 242, 254, 0.6) !important;
    transform: translateY(-2px) !important;
}

/* 图标样式 */
.world-class-system .feature-icon {
    color: #4299e1 !important;
}

/* 文字样式 */
.world-class-system .system-title {
    color: #2c5282 !important;
    font-weight: 600 !important;
    font-size: 2rem !important;
}

.world-class-system .system-subtitle {
    color: #4a5568 !important;
    font-size: 1.1rem !important;
}

.world-class-system .feature-box h6 {
    color: #2d3748 !important;
    font-weight: 600 !important;
}

.world-class-system .feature-box small {
    color: #718096 !important;
}

/* 统计数据样式 */
.world-class-system .stat-number {
    color: #3182ce !important;
    font-weight: bold !important;
    font-size: 2.5rem !important;
}

.world-class-system .stat-label {
    color: #718096 !important;
    font-size: 0.9rem !important;
}

/* 按钮样式 */
.world-class-system .btn-primary {
    background: linear-gradient(135deg, #4299e1, #3182ce) !important;
    border: none !important;
    color: white !important;
    font-weight: 600 !important;
}

.world-class-system .btn-primary:hover {
    background: linear-gradient(135deg, #3182ce, #2c5282) !important;
    transform: translateY(-1px) !important;
}

.world-class-system .btn-outline-secondary {
    border: 2px solid #cbd5e0 !important;
    color: #4a5568 !important;
    background: white !important;
    font-weight: 600 !important;
}

.world-class-system .btn-outline-secondary:hover {
    background: #f7fafc !important;
    border-color: #a0aec0 !important;
    color: #2d3748 !important;
}

/* 响应式优化 - 保持原来的紧凑布局 */
@media (max-width: 768px) {
    .world-class-system .feature-box {
        min-height: 100px !important;
    }
    
    .world-class-system .system-title {
        font-size: 1.5rem !important;
    }
    
    .world-class-system .stat-number {
        font-size: 1.8rem !important;
    }
}

/* 护眼模式增强 */
@media (prefers-color-scheme: dark) {
    .world-class-system {
        background: linear-gradient(135deg, #1a202c 0%, #2d3748 50%, #1a202c 100%) !important;
        border-color: #4a5568 !important;
    }
    
    .world-class-system .system-title {
        color: #e2e8f0 !important;
    }
    
    .world-class-system .system-subtitle,
    .world-class-system p,
    .world-class-system span,
    .world-class-system div {
        color: #cbd5e0 !important;
    }
}