html {
    font-size: 62.5%;
}

:root {
    --primary: #409EFF;
    --primary-light: #66b1ff;
    --secondary: #3a8ee6;
    --accent: #f59e0b;
    --dark: #303133;
    --light: #f5f7fa;
    --gradient-primary: linear-gradient(135deg, #409EFF 0%, #66b1ff 100%);
    --gradient-secondary: linear-gradient(135deg, #3a8ee6 0%, #409EFF 100%);
    --shadow-soft: 0 0.2rem 1.2rem rgba(64,158,255,0.08);
    --shadow-hover: 0 0.4rem 2rem rgba(64,158,255,0.15);
    --radius-lg: 1.2rem;
    --radius-xl: 2rem;
    --transition: all 0.3s ease;
    
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

body {
    /* font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif; */
    font-family: 'Microsoft YaHei', 'PingFang SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--light);
    color: var(--dark);
    overflow-x: hidden;
}

/* Header - 青春活力风格 */
.header {
    background: var(--gradient-primary);
    padding: 2rem 0;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 30rem;
    height: 30rem;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-2rem) rotate(180deg); }
}

.header-container {
    max-width: 140rem;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 4rem;
    position: relative;
    z-index: 1;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    color: white;
    font-size: 2.8rem;
    font-weight: 800;
}

.logo img {
    height: 7rem;
    width: auto;
    display: block;
    /* padding: 0.3rem 0.6rem; */
}

.logo i {
    font-size: 4rem;
    animation: bounce 2s ease infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-1rem); }
}

/* 汉堡菜单按钮 */
.menu-toggle {
    display: none;
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    width: 4.5rem;
    height: 4.5rem;
    border-radius: 1rem;
    cursor: pointer;
    font-size: 2.2rem;
    transition: all 0.3s;
    align-items: center;
    justify-content: center;
}

.menu-toggle:hover {
    background: rgba(255,255,255,0.3);
}

/* 移动端导航浮窗 */
.mobile-nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s;
}

.mobile-nav-overlay.active {
    opacity: 1;
}

.mobile-nav {
    position: fixed;
    top: 0;
    right: -30rem;
    width: 28rem;
    height: 100%;
    background: white;
    z-index: 1000;
    transition: right 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    overflow-y: auto;
    box-shadow: -0.5rem 0 2rem rgba(0,0,0,0.1);
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav-header {
    padding: 2rem;
    background: var(--gradient-primary);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mobile-nav-header h3 {
    font-size: 1.8rem;
    font-weight: 700;
}

.mobile-nav-close {
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 0.8rem;
    cursor: pointer;
    font-size: 1.8rem;
}

.mobile-nav-list {
    list-style: none;
    padding: 1rem 0;
}

.mobile-nav-item {
    border-bottom: 1px solid #f0f0f0;
}

.mobile-nav-link {
    display: block;
    padding: 1.5rem 2rem;
    color: var(--dark);
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 500;
    transition: all 0.2s;
}

.mobile-nav-link:hover {
    background: rgba(30,58,95,0.05);
    color: var(--primary);
}

.mobile-nav-item.has-submenu .mobile-nav-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mobile-nav-item.has-submenu .mobile-nav-link::after {
    content: '\f107';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 1.2rem;
    transition: transform 0.3s;
}

.mobile-nav-item.has-submenu.active .mobile-nav-link::after {
    transform: rotate(180deg);
}

.mobile-submenu {
    display: none;
    background: #f8f9fa;
}

.mobile-nav-item.has-submenu.active .mobile-submenu {
    display: block;
}

.mobile-submenu-item {
    padding: 1.2rem 2rem 1.2rem 3.5rem;
    color: #666;
    font-size: 1.4rem;
    border-bottom: 1px solid #f0f0f0;
}

.mobile-submenu-item:last-child {
    border-bottom: none;
}

.search-box {
    position: relative;
    width: 34rem;
    max-width: 100%;
    transition: all 0.3s;
}

/* 移动端搜索框 - 默认隐藏 */
@media (max-width: 76.8rem) {
    .search-box {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        width: 100%;
        padding: 1.5rem;
        background: white;
        box-shadow: 0 0.4rem 2rem rgba(0,0,0,0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        z-index: 200;
    }

    .search-box.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .search-box input {
        border-radius: 2.5rem;
        box-shadow: 0 0.2rem 1rem rgba(0,0,0,0.1);
        border: 1px solid #e0e0e0;
    }
}

/* 搜索图标按钮 - 仅移动端显示 */
.search-toggle {
    display: none;
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    width: 4.5rem;
    height: 4.5rem;
    border-radius: 1rem;
    cursor: pointer;
    font-size: 2rem;
    transition: all 0.3s;
    align-items: center;
    justify-content: center;
}

.search-toggle:hover {
    background: rgba(255,255,255,0.3);
}

@media (max-width: 76.8rem) {
    .search-toggle {
        display: flex;
    }
}

.search-box input {
    width: 100%;
    padding: 1.5rem 5.5rem 1.5rem 2.5rem;
    border: none;
    border-radius: var(--radius-xl);
    font-size: 1.5rem;
    outline: none;
    background: rgba(255,255,255,0.95);
    box-shadow: 0 0.4rem 1.5rem rgba(0,0,0,0.1);
    transition: all 0.3s;
}

.search-box input:focus {
    box-shadow: 0 0.6rem 2.5rem rgba(255,107,107,0.3);
    transform: scale(1.02);
}

.search-box button {
    position: absolute;
    right: 0.8rem;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--primary);
    width: 4.2rem;
    height: 4.2rem;
    border-radius: 0;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 1.6rem;
}

.search-box button:hover {
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 0.4rem 1.5rem rgba(255,107,107,0.4);
}

/* Navigation - 与header融为一体 */
.nav-bar {
    background: var(--gradient-primary);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-bar::before {
    content: '';
    position: absolute;
    top: -80%;
    left: -5%;
    width: 25rem;
    height: 25rem;
    background: rgba(255,255,255,0.08);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite;
    animation-delay: -2s;
}

.nav-container {
    /* max-width: 140rem; */
    margin: 0 auto;
    display: flex;
    justify-content: center;
    padding: 0 4rem;
    /* gap: 0.5rem; */
    flex-wrap: nowrap;
}

.nav-item {
    padding: 1.8rem 2rem;
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    font-size: 1.7rem;
    transition: all 0.3s;
    position: relative;
    border-radius: var(--radius-lg);
    cursor: pointer;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-item a {
    text-decoration: none;
}

.nav-item:hover {
    color: white;
    background: rgba(255,255,255,0.15);
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: 0.8rem;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 60%;
    height: 0.3rem;
    background: rgba(255,255,255,0.8);
    border-radius: 0.2rem;
    transition: transform 0.3s;
}

.nav-item:hover::after {
    transform: translateX(-50%) scaleX(1);
}

/* 二级菜单 */
.nav-item.has-dropdown {
    padding-right: 3.5rem;
}

.nav-item.has-dropdown::before {
    content: '\f107';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    right: 1.2rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2rem;
    transition: transform 0.3s;
}

.nav-item.has-dropdown:hover::before {
    transform: translateY(-50%) rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 22rem;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: 0 1rem 4rem rgba(0,0,0,0.12);
    padding: 0.8rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-1rem);
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 200;
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    padding: 1.2rem 2rem;
    color: var(--dark);
    text-decoration: none;
    font-size: 1.4rem;
    transition: all 0.2s;
    border-left: 0.3rem solid transparent;
}

.dropdown-item:hover {
    background: rgba(64,158,255,0.08);
    color: var(--primary);
    border-left-color: var(--primary);
    padding-left: 2.5rem;
}

.dropdown-item svg {
    width: 1.8rem;
    height: 1.8rem;
    flex-shrink: 0;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
}

/* 移动端下拉菜单 */
@media (max-width: 76.8rem) {
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: #f8f9fa;
        border-radius: 0.8rem;
        margin-top: 0.8rem;
        display: none;
        padding: 0.8rem 0;
    }

    .nav-item.has-dropdown.active .dropdown-menu {
        display: block;
    }

    .nav-item.has-dropdown.active::before {
        transform: translateY(-50%) rotate(180deg);
    }

    /* 移动端隐藏 SVG 图标 */
    .dropdown-item svg {
        display: none;
    }
}

/* Carousel Section - 大气轮播 */
.carousel-section {
    max-width: 140rem;
    margin: 3rem auto;
    padding: 0 4rem;
}

.swiper {
    width: 100%;
    height: 50rem;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.swiper-slide {
    position: relative;
    overflow: hidden;
}

.swiper-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1);
    transition: transform 6s ease-out;
}

.swiper-slide-active img {
    transform: scale(1.1);
}

.slide-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.4) 60%, transparent 100%);
    color: white;
    padding: 6rem 4rem 4rem;
    transform: translateY(2rem);
    opacity: 0;
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.swiper-slide-active .slide-caption {
    transform: translateY(0);
    opacity: 1;
    transition-delay: 0.3s;
}

.slide-caption h3 {
    font-size: 3.2rem;
    margin-bottom: 1rem;
    font-weight: 700;
    transform: translateX(-3rem);
    opacity: 0;
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.swiper-slide-active .slide-caption h3 {
    transform: translateX(0);
    opacity: 1;
    transition-delay: 0.5s;
}

.slide-caption p {
    font-size: 1.6rem;
    opacity: 0;
    transform: translateX(-2rem);
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.swiper-slide-active .slide-caption p {
    opacity: 0.95;
    transform: translateX(0);
    transition-delay: 0.7s;
}

.swiper-button-next, .swiper-button-prev {
    color: white;
    background: rgba(64,158,255,0.7);
    width: 3.6rem;
    height: 3.6rem;
    border-radius: 50%;
    transition: all 0.3s;
    font-size: 1.4rem;
}

.swiper-button-next:hover, .swiper-button-prev:hover {
    background: var(--primary);
    transform: scale(1.1);
}

.swiper-button-next::after, .swiper-button-prev::after {
    font-size: 1.4rem;
    font-weight: bold;
}

.swiper-pagination-bullet-active {
    background: var(--primary);
}

/* Quick Access - 活力卡片 */
.quick-access {
    max-width: 140rem;
    margin: 4rem auto;
    padding: 0 4rem;
}

.quick-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
    gap: 2.5rem;
}

.quick-item {
    background: white;
    padding: 3.5rem 2rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-soft);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    display: block;
}

.quick-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 0.4rem;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s;
}

.quick-item:hover {
    transform: translateY(-1rem);
    box-shadow: var(--shadow-hover);
}

.quick-item:hover::before {
    transform: scaleX(1);
}

.quick-item i {
    font-size: 4.2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    display: block;
}

.quick-item span {
    display: block;
    font-size: 1.5rem;
    color: var(--dark);
    font-weight: 600;
}

/* Content Section - 两列布局 */
.content-section {
    max-width: 140rem;
    margin: 4rem auto;
    padding: 0 4rem;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
}

.left-column {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s;
}

.left-column:hover {
    box-shadow: var(--shadow-hover);
}

.featured-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.featured-link:hover .featured-image {
    transform: scale(1.05);
}

.featured-image {
    width: 100%;
    height: 32rem;
    object-fit: cover;
    transition: transform 0.5s;
}

.left-column:hover .featured-image {
    transform: scale(1.05);
}

.featured-content {
    padding: 3rem;
}

.featured-content h3 {
    font-size: 2.4rem;
    margin-bottom: 1.5rem;
    color: var(--dark);
    font-weight: 700;
}

.featured-content p {
    font-size: 1.5rem;
    color: #666;
    line-height: 1.8;
}

.featured-news-meta {
    padding: 0 3rem 3rem 3rem;
    display: flex;
    gap: 2rem;
    font-size: 1.3rem;
    color: #999;
    margin-top: -1rem;
}

.featured-news-meta span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.featured-news-meta i {
    font-size: 1.4rem;
    color: var(--primary);
}

.right-column {
    background: white;
    border-radius: var(--radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow-soft);
}

.tab-header {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    border-bottom: 0.2rem solid #f0f0f0;
}

.tab-btn {
    padding: 1.2rem 2.5rem;
    background: none;
    border: none;
    font-size: 1.6rem;
    color: #999;
    cursor: pointer;
    position: relative;
    transition: all 0.3s;
    font-weight: 600;
}

.tab-btn.active {
    color: var(--primary);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -0.2rem;
    left: 0;
    right: 0;
    height: 0.3rem;
    background: var(--gradient-primary);
    border-radius: 0.2rem;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.4s;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(1rem); }
    to { opacity: 1; transform: translateY(0); }
}

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

.news-item {
    padding: 0;
    border-bottom: 1px solid #f5f5f5;
    display: flex;
    transition: all 0.3s;
}

.news-item a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 1.5rem 0;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s;
}

.news-item a:hover {
    padding-left: 1rem;
    background: rgba(255,107,107,0.03);
}

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

.news-title {
    flex: 1;
    font-size: 1.5rem;
    color: var(--dark);
    margin-right: 1.5rem;
    font-weight: 500;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-break: break-all;
}

.news-date {
    font-size: 1.3rem;
    color: #999;
    background: #f5f5f5;
    padding: 0.4rem 1rem;
    border-radius: 1.2rem;
}

/* Three Column Section */
.three-column-section {
    max-width: 140rem;
    margin: 4rem auto;
    padding: 0 4rem;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.column-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s;
    overflow: hidden;
    min-width: 0;
}

.column-card:hover {
    transform: translateY(-0.5rem);
    box-shadow: var(--shadow-hover);
}

.column-card h3 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--dark);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 700;
}

.column-card h3 i {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 2.4rem;
}

.more-link {
    font-size: 1.4rem;
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
}

.more-link:hover {
    color: var(--primary-light);
    gap: 0.8rem;
}

.more-link::after {
    content: '\f105';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 1.2rem;
}

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

.campus-item {
    padding: 1.2rem 0;
    border-bottom: 1px solid #f5f5f5;
    font-size: 1.4rem;
    color: #666;
    transition: all 0.3s;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.campus-item:hover {
    color: var(--primary);
    padding-left: 0.8rem;
}

.campus-item:last-child {
    border-bottom: none;
}

.campus-item-text {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.campus-item-date {
    font-size: 1.2rem;
    color: #999;
    background: #f5f5f5;
    padding: 0.3rem 0.8rem;
    border-radius: 1rem;
    flex-shrink: 0;
}

.video-layout {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.video-preview {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 1.2rem;
    overflow: hidden;
    background: #f0f0f0;
    cursor: pointer;
    flex-shrink: 0;
}

.video-preview a {
    display: block;
    width: 100%;
    height: 100%;
    position: relative;
}

.video-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s;
}

.video-preview:hover img {
    transform: scale(1.05);
}

.video-thumbs {
    height: auto !important;
    flex-shrink: 0;
}

.video-thumbs .swiper-wrapper {
    display: flex;
    flex-direction: row;
}

.video-thumbs .swiper-slide {
    width: auto;
    height: auto !important;
    cursor: pointer;
    border-radius: 0.8rem;
    overflow: hidden;
    border: 0.2rem solid transparent;
    transition: all 0.2s;
    align-self: flex-start;
}

.video-thumbs .swiper-slide.active,
.video-thumbs .swiper-slide-thumb-active {
    border-color: var(--primary);
}

.video-thumbs .swiper-slide:hover {
    border-color: rgba(255,107,107,0.4);
}

.video-thumbs .swiper-slide img {
    width: 9rem;
    height: 6rem;
    object-fit: cover;
    display: block;
    border-radius: 0.6rem;
}

.play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 5rem;
    height: 5rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    box-shadow: 0 0.4rem 1.5rem rgba(255,107,107,0.35);
    transition: all 0.3s;
}

.video-preview:hover .play-icon {
    transform: translate(-50%, -50%) scale(1.15);
}

/* Advertisement Section */
.ad-section {
    max-width: 140rem;
    margin: 4rem auto;
    padding: 0 4rem;
}

.ad-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.ad-item {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: all 0.4s;
    cursor: pointer;
}

.ad-item:hover {
    transform: translateY(-0.8rem) scale(1.02);
    box-shadow: var(--shadow-hover);
}

.ad-item img {
    width: 100%;
    height: 16rem;
    object-fit: cover;
    transition: transform 0.5s;
}

.ad-item:hover img {
    transform: scale(1.1);
}

.ad-info {
    padding: 1.8rem;
}

.ad-info h4 {
    font-size: 1.6rem;
    color: var(--dark);
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.ad-info p {
    font-size: 1.3rem;
    color: #999;
}

/* Campus Scenery Section */
.scenery-section {
    max-width: 140rem;
    margin: 5rem auto;
    padding: 0 4rem;
}

.section-title {
    font-size: 3.2rem;
    color: var(--dark);
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
    font-weight: 800;
}

.section-title::after {
    content: '';
    display: block;
    width: 8rem;
    height: 0.4rem;
    background: var(--gradient-primary);
    margin: 1.5rem auto 0;
    border-radius: 0.2rem;
}

.scenery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr));
    gap: 2rem;
}

.scenery-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 24rem;
    box-shadow: var(--shadow-soft);
    cursor: pointer;
}

.scenery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s;
}

.scenery-item:hover img {
    transform: scale(1.15);
}

.scenery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: white;
    padding: 3rem 2rem 2rem;
    transition: all 0.3s;
}

.scenery-item:hover .scenery-overlay {
    padding-bottom: 3rem;
}

.scenery-overlay h4 {
    font-size: 1.8rem;
    font-weight: 600;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    margin-top: 8rem;
    position: relative;
}

.footer-wave {
    position: absolute;
    top: -8rem;
    left: 0;
    width: 100%;
    height: 8rem;
    overflow: hidden;
    line-height: 0;
}

.footer-wave svg {
    width: 100%;
    height: 100%;
    display: block;
}

.footer-wave path {
    fill: var(--light);
}

/* 事业单位图标行 */
.footer-badges {
    max-width: 140rem;
    margin: 0 auto;
    padding: 0 4rem 3rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4rem;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.footer-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
    opacity: 0.85;
    transition: opacity 0.3s;
}

.footer-badge:hover {
    opacity: 1;
}

.footer-badge img {
    height: 7rem;
    /* width: auto; */
    /* filter: brightness(0) invert(1);
    opacity: 0.7; */
}

.footer-badge span {
    font-size: 1.2rem;
    color: #8899aa;
    white-space: nowrap;
}

.footer-container {
    max-width: 140rem;
    margin: 0 auto;
    padding: 4rem 4rem;
    display: grid;
    grid-template-columns: 1fr 1.5fr 22rem;
    gap: 3rem;
    position: relative;
    z-index: 1;
}

.footer-section h4 {
    font-size: 1.6rem;
    margin-bottom: 2rem;
    color: #ecf0f1;
    font-weight: 600;
    position: relative;
    padding-bottom: 1.2rem;
}

.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 3rem;
    height: 0.2rem;
    background: var(--primary);
    border-radius: 1px;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 1rem;
    color: #95a5a6;
    font-size: 1.3rem;
    line-height: 1.5;
}

.footer-section li i {
    width: 1.6rem;
    margin-right: 0.6rem;
    color: var(--primary);
    font-size: 1.2rem;
}

.footer-section a {
    color: #95a5a6;
    text-decoration: none;
    font-size: 1.3rem;
    transition: all 0.3s;
    display: inline-block;
}

.footer-section a:hover {
    color: var(--primary-light);
    transform: translateX(0.5rem);
}

.footer-section a i {
    width: 1.6rem;
    margin-right: 0.6rem;
    color: var(--primary);
    font-size: 1.2rem;
}

/* 学校名称区块 */
.footer-about .school-name {
    font-size: 1.8rem;
    color: #ecf0f1;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.footer-about .school-subtitle {
    font-size: 1.2rem;
    color: var(--primary-light);
    margin-bottom: 1.5rem;
    letter-spacing: 0.2rem;
}

.footer-about p {
    font-size: 1.3rem;
    color: #95a5a6;
    line-height: 1.8;
}

/* 二维码区块 */
.footer-qr-group h4 {
    font-size: 1.6rem;
    color: #ecf0f1;
    font-weight: 600;
    margin-bottom: 1.8rem;
    position: relative;
    padding-bottom: 1.2rem;
}

.footer-qr-group h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 3rem;
    height: 0.2rem;
    background: var(--primary);
    border-radius: 1px;
}

.footer-qr-row {
    display: flex;
    gap: 2rem;
}

.footer-qr {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer-qr-img {
    width: 10rem;
    height: 10rem;
    background: white;
    border-radius: 0.8rem;
    padding: 0.5rem;
}

.footer-qr-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.footer-qr span {
    font-size: 1.2rem;
    color: #8899aa;
    margin-top: 0.8rem;
    text-align: center;
}

.footer-bottom {
    max-width: 140rem;
    margin: 0 auto;
    padding: 1.5rem 4rem 2rem;
    border-top: 1px solid rgba(255,255,255,0.08);
    text-align: center;
    font-size: 1.3rem;
    color: #6c7a89;
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-bottom a {
    color: #6c7a89;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-bottom a:hover {
    color: var(--primary-light);
}

.footer-bottom .sep {
    color: #3d4f5f;
}

/* 公安备案图标 */
.footer-police-icon {
    display: inline-block;
    vertical-align: middle;
    margin-right: 0.4rem;
    width: 1.6rem;
    height: 1.6rem;
}

/* Responsive - Tablet */
@media (max-width: 102.4rem) {
    .header-container,
    .carousel-section,
    .quick-access,
    .content-section,
    .three-column-section,
    .ad-section,
    .scenery-section,
    .footer-container,
    .footer-bottom {
        padding-left: 2rem;
        padding-right: 2rem;
    }

    .content-section {
        grid-template-columns: 1fr;
    }

    .three-column-section {
        grid-template-columns: 1fr;
    }

    .ad-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .swiper {
        height: 35rem;
    }

    .footer-container {
        grid-template-columns: 1fr 1.4fr 20rem;
        gap: 2.5rem;
    }

    .footer-badges {
        gap: 2.5rem;
    }

    .footer-badge img {
        height: 7rem;
    }
}

/* 导航栏自适应 - 1280px 以下压缩间距 */
@media (max-width: 1280px) {
    .nav-item {
        padding: 1.6rem 1.2rem;
        font-size: 1.4rem;
    }
    .nav-item.has-dropdown {
        padding-right: 2.8rem;
    }
    .nav-item.has-dropdown::before {
        right: 0.8rem;
    }
}

/* 导航栏自适应 - 1024px 以下进一步压缩 */
@media (max-width: 1024px) {
    .nav-container {
        padding: 0 2rem;
    }
    .nav-item {
        padding: 1.4rem 0.8rem;
        font-size: 1.3rem;
    }
    .nav-item.has-dropdown {
        padding-right: 2.2rem;
    }
    .nav-item.has-dropdown::before {
        right: 0.5rem;
        font-size: 1rem;
    }
}

/* Responsive - Mobile */
@media (max-width: 76.8rem) {
    .header {
        padding: 1.5rem 0;
    }

    .header-container {
        flex-direction: row;
        gap: 1.5rem;
        padding: 0 1.5rem;
        justify-content: space-between;
    }

    .logo {
        font-size: 2.2rem;
    }

    .logo img {
        height: 4rem;
        border-radius: 0.6rem;
        padding: 0.2rem 0.4rem;
    }

    .logo i {
        font-size: 3.2rem;
    }

    .menu-toggle {
        display: flex;
    }

    .search-box {
        width: 100%;
    }

    .search-box input {
        padding: 1.2rem 5rem 1.2rem 1.8rem;
        font-size: 1.4rem;
    }

    .search-box button {
        width: 3.8rem;
        height: 3.8rem;
    }

    /* 隐藏PC端导航 */
    .nav-bar {
        display: none;
    }

    /* 显示移动端导航浮窗 */
    .mobile-nav-overlay {
        display: block;
        pointer-events: none;
    }

    .mobile-nav-overlay.active {
        pointer-events: auto;
    }

    .quick-access {
        padding: 0 1.5rem;
        margin: 2rem auto;
    }

    .quick-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.2rem;
    }

    .quick-item {
        padding: 2rem 1rem;
    }

    .quick-item i {
        font-size: 2.8rem;
    }

    .quick-item span {
        font-size: 1.2rem;
    }

    .left-column:hover .featured-image {
        transform: none;
    }

    .featured-image {
        height: 20rem;
    }

    .featured-content {
        padding: 2rem;
    }

    .featured-content h3 {
        font-size: 1.8rem;
    }

    .right-column {
        padding: 2rem;
    }

    .tab-header {
        gap: 1rem;
    }

    .tab-btn {
        padding: 1rem 1.8rem;
        font-size: 1.4rem;
    }

    .news-title {
        font-size: 1.4rem;
    }

    .news-date {
        font-size: 1.2rem;
        padding: 0.3rem 0.8rem;
    }

    .column-card {
        padding: 2rem;
    }

    .column-card h3 {
        font-size: 1.8rem;
    }

    .campus-item {
        flex-wrap: wrap;
    }

    .campus-item-text {
        font-size: 1.3rem;
    }

    .campus-item-date {
        font-size: 1.1rem;
        padding: 0.2rem 0.6rem;
    }

    .video-preview {
        aspect-ratio: 16 / 9;
    }
    .video-thumbs .swiper-slide img {
        width: 8rem;
        height: 5rem;
    }

    .play-icon {
        width: 5rem;
        height: 5rem;
        font-size: 2rem;
    }

    .ad-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .ad-item img {
        height: 14rem;
    }

    .section-title {
        font-size: 2.4rem;
    }

    .scenery-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .scenery-item {
        height: 20rem;
    }

    .footer {
        margin-top: 5rem;
    }

    .footer-badges {
        padding: 2.5rem 1.5rem 2rem;
        gap: 2rem;
    }

    .footer-badge img {
        height: 7rem;
    }

    .footer-container {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
        padding: 2.5rem 1.5rem;
    }

    .footer-about {
        grid-column: 1 / -1;
    }

    .footer-qr-group {
        grid-column: span 1;
    }

    .footer-qr-row {
        gap: 1.2rem;
    }

    .footer-section h4 {
        font-size: 1.4rem;
    }

    .footer-bottom {
        padding: 1.2rem 1.5rem 1.5rem;
        font-size: 1.2rem;
        gap: 1rem;
    }
}

/* Responsive - Small Mobile */
@media (max-width: 48rem) {
    .logo {
        font-size: 2rem;
    }

    .logo i {
        font-size: 2.8rem;
    }

    .quick-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .swiper {
        height: 20rem;
    }

    .slide-caption h3 {
        font-size: 1.6rem;
    }

    .footer-container {
        grid-template-columns: 1fr;
    }
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 4rem;
    right: 3rem;
    width: 4.5rem;
    height: 4.5rem;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(2rem);
    transition: all 0.3s ease;
    box-shadow: 0 0.4rem 1.5rem rgba(0,0,0,0.15);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--secondary);
    transform: translateY(-0.3rem);
    box-shadow: 0 0.6rem 2rem rgba(0,0,0,0.2);
}