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

:root {
    --primary-red: #c8102e;
    --primary-blue: #003366;
    --dark-blue: #002147;
    --light-gray: #f5f5f5;
    --dark-gray: #555;
    --white: #ffffff;
    --black: #333333;
}

body {
    background-color: #f8f8f8;
    color: var(--black);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 主轮播区域 - 作为封面 */
.main-slider {
    position: relative;
    height: 700px;
    margin-top: -1px;
}

.slider-item {
    position: relative;
    height: 700px;
    background-size: cover;
    background-position: center;
}

.slider-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    justify-content: end;
    padding: 0 15%;
    text-decoration: none;
}

.slider-content {
    color: var(--white);
}

.slider-category {
    background: var(--primary-blue);
    display: inline-block;
    padding: 5px 15px;
    font-size: 14px;
    margin-bottom: 20px;
    border-radius: 4px;
}

.slider-title {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 80px;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.slider-desc {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 45px;
}

.slider-btn {
    display: inline-block;
    background: var(--primary-blue);
    color: var(--white);
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
}

.slider-btn:hover {
    background: #a00c24;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.slick-prev, .slick-next {
    width: 60px;
    height: 60px;
    z-index: 10;
}

.slick-prev:before, .slick-next:before {
    font-size: 40px;
    color: var(--white);
    text-shadow: 0 0 5px rgba(0,0,0,0.5);
}

.slick-prev {
    left: 30px;
}

.slick-next {
    right: 30px;
}

.slick-dots {
    bottom: 30px;
}

.slick-dots li button:before {
    color: var(--white);
    font-size: 14px;
    opacity: 0.7;
}

.slick-dots li.slick-active button:before {
    color: var(--primary-blue);
    opacity: 1;
}

/* 内容区域 */
.content-section {
    padding: 80px 0 60px;
    background: var(--white);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary-blue);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--dark-gray);
    max-width: 700px;
    margin: 0 auto;
}

/* 三栏布局 */
.three-columns {
    display: flex;
    gap: 30px;
    margin-top: 30px;
}

.feature-box {
    flex: 1;
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    padding: 35px 30px;
    transition: all 0.3s ease;
    text-align: center;
    border-top: 4px solid var(--primary-blue);
}

.feature-box:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--light-gray);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 32px;
    color: var(--primary-blue);
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.feature-desc {
    color: var(--dark-gray);
    margin-bottom: 25px;
    line-height: 1.8;
}

.feature-link {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
}

.feature-link i {
    margin-left: 5px;
    transition: transform 0.3s;
}

.feature-link:hover i {
    transform: translateX(5px);
}

/* 新闻区域 */
.news-section {
    padding: 80px 0;
    background: var(--light-gray);
}

.two-columns {
    display: flex;
    gap: 30px;
    margin-top: 30px;
}

.column {
    flex: 1;
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    padding: 30px;
    transition: all 0.3s ease;
}

.column:hover {
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.column-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--primary-blue);
}

.column-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-blue);
    display: flex;
    align-items: center;
}

.column-title i {
    margin-right: 10px;
    color: var(--primary-blue);
}

.more-link {
    color: var(--dark-gray);
    font-size: 14px;
    text-decoration: none;
    transition: color 0.3s;
}

.more-link:hover {
    color: var(--primary-blue);
}

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

.news-item {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
}

.news-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.news-date {
    min-width: 80px;
    text-align: center;
    margin-right: 20px;
}

.news-day {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    line-height: 1;
}

.news-month {
    display: block;
    font-size: 0.9rem;
    color: var(--dark-gray);
    text-transform: uppercase;
}

.news-content {
    flex: 1;
}

.news-title {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--dark-blue);
    text-decoration: none;
    transition: color 0.3s;
    display: block;
    line-height: 1.4;
    margin-bottom: 8px;
}

.news-title:hover {
    color: var(--primary-blue);
}

.news-desc {
    color: var(--dark-gray);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .three-columns {
        flex-direction: column;
    }
    
    .feature-box {
        margin-bottom: 30px;
    }
}

@media (max-width: 768px) {
    .main-slider, .slider-item {
        height: 400px;
    }
    
    .slider-overlay {
        padding: 0 10%;
    }
    
    .slider-title {
        font-size: 2rem;
    }
    
    .slider-desc {
        font-size: 1rem;
    }
    
    .two-columns {
        flex-direction: column;
    }
    
    .column {
        margin-bottom: 30px;
    }
}

@media (max-width: 480px) {
    .main-slider, .slider-item {
        height: 350px;
    }
    
    .slider-overlay {
        padding: 0 20px;
    }
    
    .slider-title {
        font-size: 1.8rem;
    }
    
    .slick-prev, .slick-next {
        width: 40px;
        height: 40px;
    }
    
    .slick-prev:before, .slick-next:before {
        font-size: 30px;
    }
    
    .slick-prev {
        left: 15px;
    }
    
    .slick-next {
        right: 15px;
    }
}