* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    /* 保持与common.css中的header间距设置一致 */
    margin-top: var(--header-height-desktop) !important;
}

/* Hero Section */
.hero {

    height: 800px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}



/* Main Content */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 200px 20px 360px 20px;
}

.section {
    margin-bottom: 160px;
}

.section-title {
    font-size: 32px;
    font-weight: normal;
    text-align: center;
    margin-bottom: 30px;
}

.section-subtitle {
    font-size: 24px;
    font-weight: normal;
    text-align: center;
    margin-bottom: 30px;
}

.intro-section {
    max-width: 1000px;
    text-align: center;
    margin: auto;
    margin-bottom: 200px;
}

.intro-section .intro-title {
    font-size: 40px;
    margin-bottom: 40px;
}

.intro-section .intro-subtitle {
    font-size: 30px;
    margin-bottom: 40px;
}

.intro-text {
    font-size: 18px;
    line-height: 1.8;
    margin: 0 auto;
}

/* Mission Section */
.mission-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    margin-bottom: 60px;
}

.mission-content h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #333;
}

.mission-content p {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
}

.mission-image {
    text-align: center;
}

/* Full Width Mission Vision Section */
.mission-vision-section {
    width: 100vw;
    position: relative;
    left: 50%;
    right: 50%;
    margin-left: -50vw;
    margin-right: -50vw;
    background: #f8f9fa;
    padding: 60px 0;
}

.mission-vision-section .section-title {
    text-align: center;
    margin-bottom: 50px;
    color: #333;
}

.mission-vision-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
    margin: 0 auto;
}

.mission-box {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.mission-image {
    margin-bottom: 25px;
}

.mission-image img {
    width: 100%;
    object-fit: cover;
    height: 450px;
}

.mission-content {
    width: 100%;
    height: 450px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    background-color: #f5f5f5;
    margin-bottom: 30px;
}

.mission-content h5 {
    font-size: 23px;
    margin-bottom: 17px;
}

.mission-content p {
    font-size: 16px;
    line-height: 1.7;
    color: #666;
    margin-bottom: 50px;
}

/* Awards Section */
.awards-section {
    display: flex;
    gap: 50px;
    align-items: flex-start;
    padding: 40px 0;
}

.awards-list {
    width: 480px;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.award-item {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.award-header {
    display: flex;
    align-items: center;
    gap: 15px;
}

.award-icon {
    width: 30px;
    height: 30px;
    flex-shrink: 0;
}

.award-title {
    font-size: 24px;
    font-weight: normal;
    flex: 1;
}

.award-subtitle {
    font-size: 18px;
    line-height: 1.6;
    margin-bottom: 30px;
}

.awards-image {
    flex: 1;
    text-align: center;
}

.awards-image img {
    width: 100%;
    height: auto;
}

/* Event Gallery */
.event-gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.event-gallery-item {
    position: relative;
    overflow: hidden;
}

.event-gallery img {
    width: 100%;
    height: 680px;
    object-fit: cover;
}

.event-gallery-title {
    width: 100%;
    position: absolute;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: 25px;
    font-weight: bold;
    text-align: center;
    padding: 0 20px;
    z-index: 10;
}

/* Cooperation Section */
.cooperation-section {
    text-align: center;
    margin-top: 60px;
}

.cooperation-text {
    font-size: 20px;
    line-height: 1.8;
    margin-bottom: 30px;
}

.cooperation-image {
    margin-top: 30px;
}

.cooperation-image img {
    width: 100%;
    height: auto;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .awards-section {
        flex-direction: column;
        gap: 40px;
    }
    
    .awards-image {
        flex: none;
        order: 1;
        align-self: center;
    }
    
    .awards-list {
        order: 2;
    }
}

@media (max-width: 768px) {
    .section {
        margin-bottom: 80px;
    }
    
    .section-title {
        font-size: 26px;
        font-weight: normal;
        margin-bottom: 20px;
    }
    
    .section-subtitle {
        font-size: 18px;
        font-weight: normal;
        margin-bottom: 25px;
    }
    
    .intro-section {
        margin-bottom: 100px;
    }
    
    .intro-section .intro-title {
        font-size: 30px;
        margin-bottom: 30px;
    }
    
    .intro-section .intro-subtitle {
        font-size: 22px;
        margin-bottom: 30px;
    }
    
    .mission-section {
        grid-template-columns: 1fr;
    }
    
    .event-gallery {
        grid-template-columns: 1fr;
    }
    
    .event-gallery-title {
        font-size: 20px;
        bottom: 60px;
    }
    
    /* Mobile layout for mission vision */
    .mission-vision-section {
        padding: 30px 0;
    }
    
    .mission-vision-container {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 0 20px;
    }
    
    .mission-box {
        padding: 20px;
        gap: 20px;
        background: white;
        border-radius: 12px;
        box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    }

    /* 移动端：第二个 mission-box 调整布局：content 在下，image 在上 */
    .mission-vision-container .mission-box:nth-child(2) {
        flex-direction: column-reverse;
    }
    
    .mission-image {
        margin-bottom: 15px;
        width: 100%;
    }
    
    .mission-image img {
        width: 100%;
        object-fit: cover;
    }
    
    .mission-content {
        width: auto;
        height: auto;
        padding: 0;
        background-color: white;
        margin-bottom: 15px;
    }
    
    .mission-content h5 {
        font-size: 18px;
        margin-bottom: 10px;
    }
    
    .mission-content p {
        font-size: 14px;
        margin-bottom: 15px;
    }
    
    .awards-section {
        flex-direction: column;
        gap: 30px;
    }
    
    .awards-image {
        flex: none;
        order: 1;
    }
    
    .awards-list {
        order: 2;
    }
    
    .award-item {
        gap: 12px;
    }
    
    .award-header {
        gap: 12px;
    }
    
    .award-icon {
        width: 24px;
        height: 24px;
    }
    
    .award-title {
        font-size: 20px;
        font-weight: normal;
    }
    
    .award-subtitle {
        font-size: 16px;
    }
    
    .main-content {
        padding: 100px 20px 100px 20px;
    }
}

@media (max-width: 480px) {
    .section {
        margin-bottom: 60px;
    }
    
    .section-title {
        font-size: 22px;
        font-weight: normal;
        margin-bottom: 15px;
    }
    
    .section-subtitle {
        font-size: 16px;
        font-weight: normal;
        margin-bottom: 20px;
    }
    
    .intro-section {
        margin-bottom: 80px;
    }
    
    .intro-section .intro-title {
        font-size: 26px;
        margin-bottom: 25px;
    }
    
    .intro-section .intro-subtitle {
        font-size: 20px;
        margin-bottom: 25px;
    }
    
    .mission-vision-section {
        padding: 25px 0;
    }
    
    .mission-vision-container {
        padding: 0 15px;
        gap: 30px;
    }
    
    .mission-box {
        padding: 15px;
        gap: 15px;
        background: white;
        border-radius: 10px;
        box-shadow: 0 3px 16px rgba(0,0,0,0.08);
    }
    
    .mission-image {
        margin-bottom: 10px;
        width: 100%;
    }
    
    .mission-image img {
        width: 100%;
    }
    
    .mission-content {
        width: auto;
        height: auto;
        background-color: white;
        margin-bottom: 12px;
    }
    
    .mission-content h5 {
        font-size: 16px;
        margin-bottom: 8px;
    }
    
    .mission-content p {
        font-size: 13px;
        margin-bottom: 12px;
    }
    
    .award-item {
        gap: 10px;
    }
    
    .award-header {
        gap: 10px;
    }
    
    .award-icon {
        width: 20px;
        height: 20px;
    }
    
    .award-title {
        font-size: 14px;
        font-weight: normal;
    }
    
    .award-subtitle {
        font-size: 13px;
    }
    
    .awards-section {
        gap: 25px;
        padding: 30px 0;
    }
    
    .awards-list {
        gap: 25px;
    }
    
    .awards-image img {
        width: 100%;
    }
    
    .event-gallery-title {
        font-size: 18px;
        bottom: 40px;
        padding: 0 15px;
    }
}