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

/* 跳过导航链接 */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: 8px 15px;
    z-index: 1000;
    text-decoration: none;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    margin-top: 80px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

/* 色彩方案 */
:root {
    --primary-color: #005a9c;
    --secondary-color: #0078d7;
    --accent-color: #ff6b6b;
    --text-primary: #333;
    --text-secondary: #666;
    --text-light: #999;
    --bg-primary: #f8f9fa;
    --bg-secondary: #f5f5f5;
    --border-color: #e0e0e0;
    --white: #ffffff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 5px 20px rgba(0, 0, 0, 0.12);
}

/* 头部搜索区 */
/* 导航内搜索样式 */
.nav-search {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-left: auto;
}

.nav-search-input {
    padding: 10px 16px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    font-size: 14px;
    width: 220px;
    background-color: rgba(255, 255, 255, 0.65);
    color: var(--text-primary);
    transition: all 0.3s ease;
    height: 40px;
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
}

.nav-search-input::placeholder {
    color: rgba(0, 0, 0, 0.5);
}

.nav-search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: rgba(255, 255, 255, 0.9);
    box-shadow: 0 0 0 2px rgba(0, 90, 156, 0.2);
    width: 240px;
}

.nav-search-btn {
    padding: 10px 18px;
    background: rgba(255, 255, 255, 0.65);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    will-change: transform, box-shadow;
}

.nav-search-btn:hover {
    background: rgba(255, 255, 255, 0.95);
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 90, 156, 0.15);
}

/* 主导航 */
.nav {
    background: rgba(255, 255, 255, 0.25);
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    flex-wrap: wrap;
    gap: 20px;
    min-height: 100px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08), 0 8px 30px rgba(0, 0, 0, 0.12), 0 0 15px rgba(0, 90, 156, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 0 0 12px 12px;
}

.nav-logo-img {
    height: 85px;
    width: auto;
    padding: 5px 0;
    display: block;
    transition: transform 0.3s ease;
}

.nav-logo:hover .nav-logo-img {
    transform: scale(1.02);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    padding: 10px;
}

.nav-menu {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    margin: 0;
}

.nav-item {
    position: relative;
    padding: 12px 18px;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 0.2px;
    transition: all 0.3s ease;
    will-change: transform, box-shadow;
}

.nav-item a {
    color: inherit;
    text-decoration: none;
    display: block;
    transition: all 0.3s ease;
}

.nav-item:hover {
    background: rgba(0, 90, 156, 0.08);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 90, 156, 0.15), 0 0 8px rgba(0, 90, 156, 0.2);
    border-radius: 4px;
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-color);
    transform: scaleX(0);
    transition: transform 0.3s ease;
    transform-origin: right;
}

.nav-item:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.nav-submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(255, 255, 255, 0.85);
    min-width: 180px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1), 0 0 10px rgba(0, 90, 156, 0.2);
    z-index: 10;
    border-radius: 4px;
    overflow: hidden;
    opacity: 0;
    transform: translateY(10px) scale(0.95);
    transition: opacity 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    will-change: opacity, transform;
}

.nav-submenu a {
    display: block;
    padding: 10px 20px;
    color: var(--text-primary);
    font-size: 13px;
    border-bottom: 1px solid var(--border-color);
}

.nav-submenu a:hover {
    background: rgba(0, 90, 156, 0.1);
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.nav-submenu a:last-child {
    border-bottom: none;
}

.nav-item:hover .nav-submenu {
    display: block;
    opacity: 1;
    transform: translateY(0) scale(1);
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(10px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

/* Banner */
.banner {
    height: 100vh;
    width: 100%;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 24px;
    text-align: center;
    position: relative;
    overflow: hidden;
    top: 0;
    left: 0;
    z-index: 1;
}

/* 动画配置变量 */
:root {
    --animation-duration: 0.4s;
    --animation-delay: 0ms;
    --animation-easing: ease-in-out;
    --animation-translate: 30px;
    --animation-scale: 0.9;
}

/* 滚动动画样式 - 复合淡入淡出动画（透明度+缩放） */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(var(--animation-translate)) scale(var(--animation-scale));
    transition: opacity var(--animation-duration) var(--animation-easing), 
                transform var(--animation-duration) var(--animation-easing);
    will-change: opacity, transform;
    contain: layout style paint;
}

.animate-on-scroll.animate {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* 向上滚动渐出动画样式 - 复合淡入淡出动画（透明度+缩放） */
.fade-out-on-scroll {
    opacity: 1;
    transform: scale(1);
    transition: opacity var(--animation-duration) var(--animation-easing), 
                transform var(--animation-duration) var(--animation-easing);
    will-change: opacity, transform;
    contain: layout style paint;
}

.fade-out-on-scroll.fade-out {
    opacity: 0;
    transform: scale(var(--animation-scale));
}

.banner-carousel {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-container {
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: relative;
}

.carousel-slide {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 0.8s ease-in-out, transform 0.8s ease-in-out;
    transform: scale(0.9);
}

.carousel-slide.active {
    opacity: 1;
    transform: scale(1);
    z-index: 1;
}

.carousel-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 轮播指示器样式 */
.carousel-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 2;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.6);
    border: none;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.indicator:hover {
    background-color: rgba(255, 255, 255, 0.8);
    transform: scale(1.2);
}

.indicator.active {
    background-color: white;
    transform: scale(1.2);
}

/* 轮播导航按钮样式 */
.carousel-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background-color: rgba(0, 0, 0, 0.3);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease, transform 0.3s ease;
    z-index: 2;
}

.carousel-nav:hover {
    background-color: rgba(0, 0, 0, 0.5);
    transform: translateY(-50%) scale(1.1);
}

.carousel-nav.prev {
    left: 20px;
}

.carousel-nav.next {
    right: 20px;
}

.banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiPjxkZWZzPjxwYXR0ZXJuIGlkPSJwYXR0ZXJuX2JhY2tncm91bmQiIHBhdHRlcm5Vbml0cz0idXNlclNwYWNlT25Vc2UiIHdpZHRoPSI2MCIgaGVpZ2h0PSI2MCIgcGF0dGVyblRyYW5zZm9ybT0icm90YXRlKDQ1KSI+PHJlY3Qgd2lkdGg9IjYwIiBoZWlnaHQ9IjYwIiBmaWxsPSIjZmZmZmZmIiBmaWxsLW9wYWNpdHk9IjAuMDUiLz48L3BhdHRlcm4+PC9kZWZzPjxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InVybCgjcGF0dGVybl9iYWNrZ3JvdW5kKSIvPjwvc3ZnPg==');
    opacity: 0.1;
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
}

/* 新闻/公告/学术区块 */
.section-news,
.section-notice,
.section-academic {
    margin-bottom: 30px;
}

.news-list,
.notice-list,
.academic-list {
    list-style: none;
}

.news-item,
.notice-item,
.academic-item {
    padding: 10px 0;
    border-bottom: 1px dashed var(--border-color);
    transition: padding-left 0.3s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.news-item:hover,
.notice-item:hover,
.academic-item:hover {
    padding-left: 10px;
}

.news-item a, 
.notice-item a, 
.academic-item a {
    color: var(--primary-color);
    font-size: 14px;
    line-height: 1.5;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    margin-right: 10px;
}

.news-item a:hover,
.notice-item a:hover,
.academic-item a:hover {
    text-decoration: underline;
}

.item-date {
    color: var(--text-light);
    font-size: 12px;
    white-space: nowrap;
}

/* 新闻公告两栏布局 */
.news-notice-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    margin-top: 30px;
    margin-bottom: 30px;
}

/* 图片新闻样式 */
.news-section {
    background: var(--white);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08), 0 0 15px rgba(0, 90, 156, 0.1);
    border: 1px solid rgba(0, 90, 156, 0.1);
    transition: box-shadow 0.3s ease;
}

.news-section:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12), 0 0 20px rgba(0, 90, 156, 0.15);
}

.news-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.news-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.4s ease;
    padding: 20px;
    border-radius: 8px;
    background: var(--white);
    box-shadow: var(--shadow);
}

.news-item:last-child {
    margin-bottom: 0;
    padding-bottom: 20px;
    border-bottom: none;
}

.news-item:hover {
    transform: translateX(10px) translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.news-item-image {
    width: 200px;
    height: 140px;
    overflow: hidden;
    border-radius: 8px;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.4s ease;
    position: relative;
}

.news-item:hover .news-item-image {
    box-shadow: 0 6px 20px rgba(0, 90, 156, 0.25);
    transform: scale(1.02);
}

.news-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.news-item-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-item-date {
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 90, 156, 0.08);
    border-radius: 12px;
    align-self: flex-start;
}

.news-item-content h4 {
    margin: 12px 0 10px 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.5;
    letter-spacing: 0.3px;
    transition: color 0.3s ease;
}

.news-item-content h4 a {
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s ease;
    display: block;
    padding: 5px 0;
    position: relative;
}

.news-item-content h4 a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.news-item-content h4 a:hover {
    color: var(--primary-color);
}

.news-item-content h4 a:hover::after {
    width: 100%;
}

.news-item-excerpt {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
    margin-top: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 通知公告样式 */
.notice-section {
    background: var(--white);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08), 0 0 15px rgba(0, 90, 156, 0.1);
    border: 1px solid rgba(0, 90, 156, 0.1);
    transition: box-shadow 0.3s ease;
}

.notice-section:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12), 0 0 20px rgba(0, 90, 156, 0.15);
}

.notice-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.notice-item {
    margin-bottom: 16px;
    padding: 20px;
    border-radius: 8px;
    background: var(--white);
    border-left: 4px solid var(--primary-color);
    transition: all 0.4s ease;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.notice-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 4px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.notice-item:last-child {
    margin-bottom: 0;
}

.notice-item:hover {
    transform: translateX(10px) translateY(-2px);
    box-shadow: var(--shadow-hover);
    border-left-width: 0;
}

.notice-item:hover::before {
    opacity: 1;
}

.notice-item.important {
    border-left-color: var(--accent-color);
}

.notice-item.important::before {
    background: linear-gradient(180deg, var(--accent-color), var(--secondary-color));
}

.notice-item-date {
    font-size: 13px;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 600;
    letter-spacing: 0.5px;
    display: inline-block;
    padding: 3px 10px;
    background: rgba(0, 90, 156, 0.08);
    border-radius: 10px;
}

.notice-item h4 {
    margin: 10px 0 0 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.5;
    letter-spacing: 0.3px;
    transition: color 0.3s ease;
}

.notice-item h4 a {
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s ease;
    display: block;
    position: relative;
    padding-right: 20px;
}

.notice-item h4 a::after {
    content: '→';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0;
    transition: all 0.3s ease;
    color: var(--primary-color);
}

.notice-item h4 a:hover {
    color: var(--primary-color);
}

.notice-item h4 a:hover::after {
    opacity: 1;
    right: -10px;
}

.notice-item.important h4 a {
    color: var(--accent-color);
    font-weight: 700;
}

.notice-item.important h4 a:hover {
    color: var(--primary-color);
}

/* 区块标题样式 */
.section-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.section-title-centered {
    justify-content: center;
}

.section-title h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.section-title span {
    font-size: 14px;
    font-weight: 400;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.section-title .more-link {
    color: var(--primary-color);
    font-size: 14px;
    text-decoration: none;
    transition: color 0.3s ease;
}

.section-title .more-link:hover {
    color: var(--secondary-color);
}

/* 阿里妈妈数黑体标题 */
.alimama-title {
    font-family: 'Alimama ShuHeiTi', sans-serif;
    font-size: 40px;
}

/* 图片占位样式 */
.photo-placeholder {
    width: 100%;
    height: 200px;
    background: var(--bg-secondary);
    border: 1px dashed var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 14px;
    text-align: center;
    transition: transform 0.3s ease;
}

.photo-item:hover .photo-placeholder {
    transform: scale(1.05);
}

/* 专业介绍 */
.majors {
    margin-top: 20px;
}

.majors-col {
    flex: 1;
}

.undergrad-majors,
.grad-majors {
    list-style: none;
}

.major-group {
    margin-bottom: 25px;
}

.major-group-title {
    margin-bottom: 12px;
    color: var(--primary-color);
    font-size: 16px;
    font-weight: bold;
}

.undergrad-majors,
.grad-majors {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.undergrad-item,
.grad-item {
    padding: 15px;
    background: rgba(0, 90, 156, 0.05);
    border-radius: 8px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.undergrad-item h4,
.grad-item h4 {
    margin: 0 0 8px 0;
    color: var(--primary-color);
    font-size: 16px;
}

.undergrad-item p,
.grad-item p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.5;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease, margin 0.3s ease;
}

.undergrad-item.expanded p,
.grad-item.expanded p {
    max-height: 200px;
    margin-top: 8px;
}

.undergrad-item:hover,
.grad-item:hover {
    background: rgba(0, 90, 156, 0.15);
    transform: translateX(5px);
}

/* 快捷入口 */
.quick-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin: 40px 0;
}

.quick-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 25px 15px;
    background: var(--white);
    border-radius: 8px;
    color: var(--primary-color);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
    min-height: 120px;
}

.quick-link:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 90, 156, 0.2);
}

/* 页脚容器 */
.footer {
    background: var(--bg-secondary);
    padding: 40px 20px 20px;
    font-size: 14px;
    border-top: 1px solid var(--border-color);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    gap: 60px;
    flex-wrap: wrap;
}

.footer-links,
.footer-contact {
    flex: 1;
    min-width: 250px;
}

.footer-links h3,
.footer-contact h3 {
    margin-bottom: 20px;
    color: var(--primary-color);
    font-size: 18px;
    font-weight: bold;
}

/* 常用链接样式 */
.footer-links ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin: 0;
}

.footer-links li a {
    color: var(--text-secondary);
    transition: color 0.3s ease;
    font-size: 14px;
    display: inline-block;
    padding: 5px 0;
}

.footer-links li a:hover {
    color: var(--primary-color);
    text-decoration: none;
}

/* 联系方式样式 */
.footer-contact p {
    margin: 10px 0;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* 版权 */
.copyright {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    color: var(--text-light);
    font-size: 12px;
    border-top: 1px solid var(--border-color);
}

/* 三栏布局 */
.three-cols {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
}

/* 学术板块 */
.academic-section {
    background: var(--white);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08), 0 0 15px rgba(0, 90, 156, 0.1);
    border: 1px solid rgba(0, 90, 156, 0.1);
    transition: box-shadow 0.3s ease;
    margin-top: 30px;
    margin-bottom: 30px;
}

.academic-section:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12), 0 0 20px rgba(0, 90, 156, 0.15);
}

/* 通知公告内的学术内容 */
.academic-content-in-notice {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.academic-tabs {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.academic-tabs .tab {
    padding: 12px 24px;
    border: none;
    border-radius: 20px;
    background: rgba(0, 90, 156, 0.08);
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.academic-tabs .tab:hover {
    background: rgba(0, 90, 156, 0.15);
    transform: translateY(-2px);
}

.academic-tabs .tab.active {
    background: var(--primary-color);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(0, 90, 156, 0.3);
}

.academic-content {
    margin-top: 20px;
}

.academic-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.academic-item {
    margin-bottom: 16px;
    padding: 20px;
    border-radius: 8px;
    background: var(--white);
    border-left: 4px solid var(--primary-color);
    transition: all 0.4s ease;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: 339.19px;
    height: auto;
    min-height: 80px;
}

.academic-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 4px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.academic-item:last-child {
    margin-bottom: 0;
}

.academic-item:hover {
    transform: translateX(10px) translateY(-2px);
    box-shadow: var(--shadow-hover);
    border-left-width: 0;
}

.academic-item:hover::before {
    opacity: 1;
}

.academic-item a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    padding-right: 20px;
    flex: 1;
    margin-top: 30px;
    width: 100%;
}

.academic-item a::after {
    content: '→';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0;
    transition: all 0.3s ease;
    color: var(--primary-color);
}

.academic-item a:hover {
    color: var(--primary-color);
}

.academic-item a:hover::after {
    opacity: 1;
    right: -10px;
}

.academic-item .item-date {
    font-size: 13px;
    color: var(--primary-color);
    font-weight: 600;
    letter-spacing: 0.5px;
    display: inline-block;
    padding: 3px 10px;
    background: rgba(0, 90, 156, 0.08);
    border-radius: 10px;
    position: absolute;
    top: 10px;
    left: 10px;
}

.col {
    flex: 1;
    min-width: 0;
    background: var(--white);
    padding: 25px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

/* 学术标签 */
.academic-tabs {
    display: flex;
    gap: 12px;
    border-left: none;
    padding-left: 0;
    margin-bottom: 20px;
    background: rgba(0, 90, 156, 0.05);
    padding: 5px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    justify-content: center;
}

.tab {
    cursor: pointer;
    color: var(--primary-color);
    font-weight: 500;
    padding: 12px 24px;
    border: 2px solid transparent;
    background: rgba(0, 90, 156, 0.08);
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 16px;
    font-family: inherit;
    outline: none;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 90, 156, 0.1);
}

.tab.active,
.tab:hover {
    background: var(--primary-color);
    color: white;
    font-weight: 600;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 90, 156, 0.4);
    border-color: var(--secondary-color);
}

.tab:active {
    transform: translateY(0);
    box-shadow: 0 3px 10px rgba(0, 90, 156, 0.3);
    transition: all 0.1s ease;
}

/* 图文左右布局：图片占 2/3，专业占 1/3 */
.horizontal-layout {
    display: flex;
    gap: 30px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.photo-col {
    flex: 2;
    min-width: 300px;
}

.major-col {
    flex: 1;
    min-width: 250px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .three-cols {
        gap: 20px;
    }
    
    .academic-section {
        padding: 25px;
        margin-top: 25px;
        margin-bottom: 25px;
    }
    
    .news-notice-container {
        grid-template-columns: 1fr;
        gap: 30px;
        margin-bottom: 25px;
    }
    
    .news-item {
        gap: 15px;
        padding: 15px;
    }
    
    .news-item-image {
        width: 180px;
        height: 126px;
    }
    
    .section-title h2 {
        font-size: 32px;
    }
    
    .section-title span {
        font-size: 13px;
    }
    
    .section-title .more-link {
        font-size: 13px;
    }
    
    .news-section,
    .notice-section {
        padding: 25px;
    }
    
    .quick-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .nav {
        min-height: 80px;
    }
    
    .nav-logo-img {
        height: 65px;
    }
}

@media (max-width: 768px) {
    /* 头部搜索 */
    .header-search {
        justify-content: center;
    }
    
    .search-input {
        width: 150px;
    }
    
    /* 导航内搜索 */
    .nav-search {
        order: 3;
        width: 100%;
        justify-content: center;
        margin-left: 0;
        padding: 10px 0;
    }
    
    .nav-search-input {
        width: 180px;
    }
    
    .nav {
        justify-content: space-between;
        min-height: auto;
    }
    
    .nav-logo-img {
        height: 60px;
    }
    
    .news-section,
    .notice-section {
        padding: 20px;
    }
    
    .news-notice-container {
        margin-bottom: 20px;
    }
    
    .academic-section {
        padding: 20px;
        margin-top: 20px;
        margin-bottom: 20px;
    }
    
    .news-item {
        flex-direction: column;
        gap: 15px;
        padding: 15px;
    }
    
    .news-item-image {
        width: 100%;
        height: 200px;
    }
    
    .news-item-content h4 {
        font-size: 16px;
    }
    
    .notice-item {
        padding: 15px;
    }
    
    .notice-item h4 {
        font-size: 15px;
    }
    
    .section-title h2 {
        font-size: 28px;
    }
    
    .section-title span {
        font-size: 12px;
    }
    
    .section-title .more-link {
        font-size: 12px;
    }
    
    .news-section,
    .notice-section {
        padding: 20px;
    }
    
    /* 导航 */
    .nav-toggle {
        display: block;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.9);
        flex-direction: column;
        padding: 10px 0;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
        border: 1px solid rgba(255, 255, 255, 0.3);
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-item {
        padding: 12px 20px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        color: var(--text-primary);
    }
    
    .nav-item::after {
        display: none;
    }
    
    .nav-item:last-child {
        border-bottom: none;
    }
    
    .nav-submenu {
        position: static;
        background: rgba(245, 245, 245, 0.9);
        box-shadow: none;
    }
    
    .nav-submenu a {
        color: var(--text-primary);
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }
    
    .nav-submenu a:hover {
        background: rgba(0, 90, 156, 0.1);
        color: var(--primary-color);
    }
    
    /* Banner */
    .banner {
        height: 300px;
        font-size: 18px;
    }
    
    /* 三栏布局 */
    .three-cols {
        flex-direction: column;
        gap: 20px;
    }
    
    .col {
        padding: 20px;
    }
    
    /* 图文布局 */
    .horizontal-layout {
        flex-direction: column;
        gap: 30px;
    }
    
    /* 专业布局 */
    .undergrad-majors,
    .grad-majors {
        grid-template-columns: 1fr;
    }
    
    /* 学术标签 */
    .academic-tabs {
        gap: 8px;
        padding: 4px;
    }
    
    .tab {
        padding: 10px 18px;
        font-size: 14px;
        border: 2px solid transparent;
        box-shadow: 0 2px 6px rgba(0, 90, 156, 0.08);
    }
    
    /* 快捷入口 */
    .quick-links {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .quick-link {
        padding: 20px 15px;
        min-height: 100px;
    }
    
    /* 页脚 */
    .footer-container {
        flex-direction: column;
        gap: 30px;
    }
    
    .footer-links ul {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    /* 容器 */
    .container {
        padding: 0 15px;
        margin: 20px auto;
    }
    
    /* 头部搜索 */
    .header-search {
        padding: 10px 15px;
    }
    
    /* 导航 */
    .nav {
        padding: 0 15px;
    }
    
    /* 区块标题 */
    .section-title {
        font-size: 18px;
        margin-bottom: 15px;
    }
    
    /* 列 */
    .col {
        padding: 15px;
    }
    
    /* 学术标签 */
    .academic-tabs {
        gap: 6px;
        padding: 3px;
    }
    
    .tab {
        padding: 8px 14px;
        font-size: 13px;
        border: 2px solid transparent;
        box-shadow: 0 1px 4px rgba(0, 90, 156, 0.06);
    }
    
    /* 页脚 */
    .footer {
        padding: 30px 15px 15px;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.col,
.photo-item,
.quick-link,
.section-title {
    animation: fadeInUp 0.6s ease;
}

/* 滚动到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: var(--shadow-hover);
    transition: all 0.3s ease;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.back-to-top:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

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

/*二级页*/
.subPage {
    width: 1000px;
    margin: 10px auto 0px;
    overflow: hidden;
    padding: 0px;
    background: #fff;
}

.Bread {
    height: 37px;
    line-height: 37px;
    border-bottom: 1px solid #efefef;
    padding-left: 20px;
    overflow: hidden;
}

.Bread a {
    padding: 0 10px;
}

.pgarticleList {
    margin-bottom: 20px;
}

.pgarticleList ul li {
    height: 30px;
    line-height: 30px;
    background: url(../images/little_arrow_right_06.jpg) no-repeat 0px center;
    padding-left: 15px;
}

.pgarticleList ul li span {
    float: right;
    font-size: 12px;
    color: #888888;
    font-family: Verdana, Arial;
}

.pglistTitle h2 {
    color: #3598db;
    font-size: 16px;
    font-weight: bold;
    line-height: 40px;
    padding: 0px;
    margin: 5px 0px;
}

.pglistTitle h2 a {
    color: #3598db;
}

.pageList,
.pageArticle {
    padding: 0px 20px;
}

.page {
    width: 100%;
    height: 30px;
    line-height: 30px;
    text-align: center;
    margin: 0 auto;
    font-size: 12px;
    clear: both;
    padding: 10px 0px 30px;
    margin-top: 20px;
}

.page a {
    padding: 0 5px;
}

.articleTitle {
    width: 100%;
    text-align: center;
    padding-top: 20px;
}

.articleTitle h2 {
    font-size: 18px;
    color: #3598db;
    line-height: 20px;
    padding: 10px 0;
}

.articleTitle h3 {
    font-size: 14px;
    color: #555;
    line-height: 20px;
    padding: 10px 0;
    font-weight: bold;
}

.articleAuthor {
    height: 30px;
    text-align: center;
    line-height: 30px;
    margin: 10px;
    background: #e7e7e7;
    color: #777;
}

.article {
    overflow: hidden;
    margin: 20px 10px;
    font-size: 12px;
    line-height: 22px;
}

.Annex {
    padding: 0px;
    overflow: hidden;
    margin-bottom: 30px;
}

.Annex h3 {
    font-size: 16px;
    line-height: 30px;
    color: #3598db;
    padding-left: 5px;
}

.Annex ul li {
    height: 26px;
    line-height: 26px;
    padding-left: 10px;
}

.Annex ul li a {
    font-size: 12px;
    line-height: 24px;
    color: #656464;
}

.Annex ul li a:hover {
    color: #065895;
}

/* 页面加载动画 */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: opacity 0.8s ease, visibility 0.8s ease;
    overflow: hidden;
}

.page-loader::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    animation: loaderExpand 3s ease-out infinite;
}

.page-loader::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    transform: translate(-50%, -50%);
    animation: loaderExpand 3s ease-out infinite 1s;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loader-content {
    text-align: center;
    color: white;
    z-index: 1;
    position: relative;
}

.loader-logo {
    width: 140px;
    height: 140px;
    margin-bottom: 40px;
    animation: loaderPulse 2s ease-in-out infinite;
    position: relative;
}

.loader-logo::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    animation: loaderRotate 3s linear infinite;
}

.loader-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.loader-text-container {
    margin-bottom: 40px;
    position: relative;
}

.loader-title {
    font-family: 'Alimama ShuHeiTi', sans-serif;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: 5px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.3s;
    text-shadow: 
        0 0 5px rgba(255, 255, 255, 0.8),
        0 0 10px rgba(255, 255, 255, 0.6),
        0 0 20px rgba(255, 255, 255, 0.4),
        0 0 40px rgba(255, 255, 255, 0.2);
    background: linear-gradient(45deg, #ffffff, #e6e6e6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.loader-subtitle {
    font-family: 'Alimama ShuHeiTi', sans-serif;
    font-size: 28px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.5s;
    color: rgba(255, 255, 255, 0.95);
    font-weight: 600;
    letter-spacing: 5px;
    text-shadow: 
        0 0 3px rgba(255, 255, 255, 0.8),
        0 0 6px rgba(255, 255, 255, 0.6),
        0 0 12px rgba(255, 255, 255, 0.4);
}

.loader-progress {
    width: 200px;
    height: 3px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    margin-top: 40px;
    overflow: hidden;
    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
    animation-delay: 0.7s;
}

.loader-progress-bar {
    height: 100%;
    background: white;
    border-radius: 3px;
    width: 0%;
    animation: progressLoad 2s ease-out forwards;
    animation-delay: 0.8s;
}

.loader-dots {
    display: flex;
    gap: 8px;
    margin-top: 30px;
    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
    animation-delay: 1s;
}

.loader-dot {
    width: 8px;
    height: 8px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    animation: dotPulse 1.4s ease-in-out infinite;
}

.loader-dot:nth-child(1) { animation-delay: 0s; }
.loader-dot:nth-child(2) { animation-delay: 0.2s; }
.loader-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes loaderPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.9; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes progressLoad {
    0% { width: 0%; }
    100% { width: 100%; }
}

@keyframes dotPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.6; }
}

@keyframes loaderExpand {
    0% {
        width: 0;
        height: 0;
        opacity: 1;
    }
    100% {
        width: 800px;
        height: 800px;
        opacity: 0;
    }
}

@keyframes loaderRotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* 页面内容初始状态 */
.page-content {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.page-content.loaded {
    opacity: 1;
    transform: translateY(0);
}