/* 整体布局和动画背景 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(-45deg, #667eea, #764ba2, #f093fb, #f5576c);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    min-height: 100vh;
    display: flex;
    overflow-x: hidden;
}

/* 背景动画效果 */
@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 粒子动画背景 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 219, 255, 0.3) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
    pointer-events: none;
    z-index: 1;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-30px) rotate(120deg); }
    66% { transform: translateY(30px) rotate(240deg); }
}

/* 左侧导航栏 */
.sidebar {
    width: 250px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.95), rgba(118, 75, 162, 0.95));
    backdrop-filter: blur(20px);
    box-shadow: 4px 0 30px rgba(0,0,0,0.15);
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 1000;
    border-right: 1px solid rgba(255,255,255,0.2);
}

/* LOGO容器 */
.logo-container {
    padding: 25px 20px;
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.2);
    background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
    position: relative;
    overflow: hidden;
}

.logo-container::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
    animation: logoShine 6s linear infinite;
}

@keyframes logoShine {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.logo {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
    animation: logoPulse 4s ease-in-out infinite;
}

@keyframes logoPulse {
    0%, 100% { transform: scale(1); box-shadow: 0 8px 25px rgba(0,0,0,0.2); }
    50% { transform: scale(1.05); box-shadow: 0 12px 35px rgba(102,126,234,0.4); }
}

.logo-text {
    font-size: 1.2rem;
    font-weight: bold;
    color: white;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
    margin-top: 10px;
    background: linear-gradient(45deg, #fff, #f0f8ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 1;
}

/* 导航菜单 */
.nav-menu {
    padding: 20px 0;
}

.nav-menu ul {
    list-style: none;
}

.nav-menu li {
    margin: 8px 0;
}

.nav-link {
    display: flex;
    align-items: center;
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    padding: 15px 25px;
    margin: 0 15px;
    border-radius: 12px;
    transition: all 0.3s ease;
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.nav-link i {
    margin-right: 12px;
    font-size: 1.1rem;
    width: 20px;
}

.nav-link:hover {
    background: rgba(255,255,255,0.2);
    transform: translateX(5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    color: white;
    text-decoration: none;
}

.nav-link.active {
    background: rgba(255,255,255,0.25);
    color: white;
    box-shadow: 0 5px 20px rgba(0,0,0,0.3);
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.nav-link:hover::before {
    left: 100%;
}

/* 右侧主内容区 */
.main-content {
    margin-left: 250px;
    flex: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 2;
}

/* 顶部Banner */
.banner {
    background: linear-gradient(135deg, rgba(255,255,255,0.95), rgba(255,255,255,0.85));
    backdrop-filter: blur(20px);
    margin: 20px;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    border: 1px solid rgba(255,255,255,0.3);
    position: relative;
    overflow: hidden;
}

.banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(102,126,234,0.1), transparent);
    animation: bannerShine 8s linear infinite;
}

@keyframes bannerShine {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.banner-content {
    position: relative;
    z-index: 1;
}

.banner h1 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 15px;
    font-weight: bold;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.banner h1 i {
    color: #667eea;
    margin-right: 15px;
}

.banner p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 25px;
}

.banner-stats {
    display: flex;
    gap: 30px;
    justify-content: center;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: linear-gradient(135deg, rgba(102,126,234,0.1), rgba(118,75,162,0.1));
    border-radius: 25px;
    border: 1px solid rgba(102,126,234,0.2);
    animation: statFloat 3s ease-in-out infinite;
}

.stat-item:nth-child(1) { animation-delay: 0s; }
.stat-item:nth-child(2) { animation-delay: 1s; }
.stat-item:nth-child(3) { animation-delay: 2s; }

@keyframes statFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-5px); }
}

.stat-item i {
    color: #667eea;
    font-size: 1.2rem;
}

/* 三张功能卡片 */
.cards-container {
    display: flex;
    gap: 20px;
    margin: 20px;
    justify-content: space-between;
}

.feature-card {
    flex: 1;
    background: linear-gradient(135deg, rgba(255,255,255,0.95), rgba(255,255,255,0.85));
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    transition: all 0.4s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.3);
    animation: cardFloat 6s ease-in-out infinite;
}

.feature-card:nth-child(1) { animation-delay: 0s; }
.feature-card:nth-child(2) { animation-delay: 2s; }
.feature-card:nth-child(3) { animation-delay: 4s; }

@keyframes cardFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.feature-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 25px 50px rgba(0,0,0,0.15);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102,126,234,0.1), transparent);
    transition: left 0.6s;
}

.feature-card:hover::before {
    left: 100%;
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px auto;
    box-shadow: 0 10px 25px rgba(102,126,234,0.3);
    animation: iconPulse 3s ease-in-out infinite;
}

@keyframes iconPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.feature-icon i {
    font-size: 2rem;
    color: white;
}

.feature-title {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 15px;
    text-align: center;
    font-weight: bold;
}

.feature-description {
    color: #666;
    text-align: center;
    line-height: 1.6;
    margin-bottom: 15px;
}

.feature-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, #ff6b6b, #ee5a24);
    color: white;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: bold;
    box-shadow: 0 3px 10px rgba(255,107,107,0.3);
    animation: badgePulse 2s ease-in-out infinite;
}

@keyframes badgePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* 页脚 */
.footer {
    background: linear-gradient(135deg, rgba(44,62,80,0.95), rgba(52,73,94,0.95));
    backdrop-filter: blur(20px);
    color: white;
    margin: 20px 20px 20px 20px;
    margin-top: auto;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.1);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    padding: 40px;
    gap: 30px;
}

.footer-section {
    flex: 1;
}

.footer-section h4 {
    color: #667eea;
    margin-bottom: 15px;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-section p {
    margin-bottom: 8px;
    font-size: 0.9rem;
    line-height: 1.5;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-section a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #667eea;
    text-decoration: none;
}

/* 加载动画 */
.fade-in {
    animation: fadeInUp 0.8s ease forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .cards-container {
        flex-direction: column;
    }
    
    .banner-stats {
        flex-wrap: wrap;
        gap: 15px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .banner h1 {
        font-size: 2rem;
    }
    
    .banner p {
        font-size: 1rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .banner, .cards-container, .footer {
        margin: 10px;
    }
    
    .banner {
        padding: 20px;
    }
    
    .feature-card {
        padding: 20px;
    }
}/*
 * 终极修复补丁
 * 强制重置所有子页面可能带来的 writing-mode 污染
 * 确保导航栏在任何情况下都保持水平文字排列
*/
.sidebar, .sidebar * {
    writing-mode: horizontal-tb !important;
}