* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, #b4d4ff 0%, #a1c9f7 100%);
    color: #08284d;
    min-height: 100vh;
    overflow-x: hidden;
}

.model-container {
    display: flex;
    max-width: 1400px;
    margin: 0 auto;
    gap: 25px;
    margin-top: 80px;
}

/* 左侧导航样式 */
.model-sidebar {
    width: 280px;
    flex-shrink: 0;
    position: sticky;
    top: 20px;
    height: fit-content;
}

.model-nav-card {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 25px;
    box-shadow: 0 8px 32px rgba(31, 94, 171, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.model-logo {
    text-align: center;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(94, 161, 252, 0.3);
}

.model-logo h1 {
    font-size: 24px;
    color: #08284d;
    margin-bottom: 5px;
}

.model-logo p {
    color: #5ea1fc;
    font-size: 14px;
}

.model-nav-links {
    list-style: none;
}

.model-nav-links li {
    margin-bottom: 12px;
}

.model-nav-links a {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    text-decoration: none;
    color: #08284d;
    border-radius: 12px;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.1);
}

.model-nav-links a:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateX(5px);
}

.model-nav-links a.model-active {
    background: linear-gradient(90deg, #5ea1fc 0%, #08284d 100%);
    color: white;
    box-shadow: 0 5px 15px rgba(8, 40, 77, 0.3);
}

.model-nav-links i {
    margin-right: 10px;
    font-size: 18px;
}

/* 主内容区域样式 */
.model-main-content {
    flex-grow: 1;
}

.model-section {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 25px;
    box-shadow: 0 8px 32px rgba(31, 94, 171, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    animation: model-fadeIn 0.5s ease-out;
}

.model-section h2 {
    color: #08284d;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(94, 161, 252, 0.3);
}

.model-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.model-card {
    background: rgba(255, 255, 255, 0.25);
    border-radius: 15px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.model-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(8, 40, 77, 0.2);
}

.model-card-img {
    height: 180px;
    overflow: hidden;
}

.model-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.model-card:hover .model-card-img img {
    transform: scale(1.05);
}

.model-card-content {
    padding: 20px;
}

.model-card h3 {
    color: #08284d;
    margin-bottom: 10px;
}

.model-card p {
    color: #4a6fa1;
    font-size: 14px;
    line-height: 1.5;
}

/* 动画效果 */
@keyframes model-fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes model-snowflakes {
    0% {
        transform: translateY(-10px) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(360deg);
        opacity: 0;
    }
}

.model-snowflake {
    position: fixed;
    top: -10px;
    color: #fff;
    font-size: 16px;
    opacity: 0;
    pointer-events: none;
    z-index: 1000;
    animation-name: model-snowflakes;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .model-container {
        flex-direction: column;
    }
    
    .model-sidebar {
        width: 100%;
        position: relative;
        margin-bottom: 20px;
    }
    
    .model-nav-links {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .model-nav-links li {
        flex: 1;
        min-width: 120px;
    }
}

@media (max-width: 576px) {
    .model-card-grid {
        grid-template-columns: 1fr;
    }
    
    .model-nav-links {
        flex-direction: column;
    }
}