/* 全局样式 */
/* 字体变量 */
:root {
    --font-sans: 'Noto Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-serif: 'Noto Serif SC', 'Songti SC', 'STSong', 'SimSun', serif;
    --font-display: 'Inter', 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', system-ui, sans-serif;
    --font-mono: 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
}

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

:root {
    --primary-color: #000000;
    --secondary-color: #000000;
    --accent-color: #000000;
    --text-dark: #000000;
    --text-light: #666666;
    --bg-light: #F8F9FA;
    --white: #FFFFFF;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 5px 20px rgba(0, 0, 0, 0.15);
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
}

/* 锁定滚动状态 */
body.lock-scroll {
    overflow: hidden;
    height: 100vh;
}

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

/* 导航栏 */
.navbar {
    background: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-100%);
    transition: all 0.5s ease;
}

/* 导航栏显示状态 */

.navbar.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.navbar .container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem 20px;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 3rem;
    justify-content: space-evenly;
    flex: 1;
    max-width: 1200px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: all 0.3s ease;
}

/* 首页横幅 */
/* 白色半透明遮罩 */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.25) 0%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.25) 100%);
    backdrop-filter: saturate(105%) blur(1px);
    -webkit-backdrop-filter: saturate(105%) blur(1px);
    z-index: 0;
    pointer-events: none;
}
.hero-content {
    position: relative;
    z-index: 1;
}

.hero {
    background: url('library.jpg') center/cover no-repeat;
    color: #000000;
    padding: 120px 20px;
    text-align: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

/* 首页隐藏状态 */
.hero.hide {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.hero-content h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: normal;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
}

.cta-button {
    background: #000000;
    color: #FFFFFF;
    padding: 15px 40px;
    font-size: 1.1rem;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-dark);
    position: relative;
}

.section {
    padding: 80px 20px;
    background: linear-gradient(180deg, rgba(250, 250, 252, 1) 0%, rgba(255, 255, 255, 1) 100%);
}

/* 第一个区域需要上边距 */
#campus-map {
    margin-top: 70px;
}

.bg-light {
    background: linear-gradient(180deg, rgba(248, 249, 250, 1) 0%, rgba(253, 253, 253, 1) 100%), radial-gradient(700px 240px at 100% 0, rgba(0,0,0,0.03) 0%, rgba(0,0,0,0) 60%);
    background-blend-mode: soft-light, normal;
}

.section-description {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 3rem;
}

/* 校园地图区域 */
.map-intro {
    text-align: center;
    margin-bottom: 2rem;
}

.map-description {
    font-size: 1.1rem;
    color: var(--text-light);
}

.map-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: stretch;
}

.map-image {
    width: 100%;
    display: flex;
    align-items: center;
}

.map-image img {
    width: 100%;
    height: 100%;
    border-radius: 15px;
    box-shadow: var(--shadow);
    object-fit: cover;
    cursor: pointer;
    transition: all 0.3s ease;
}

.map-image img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-hover);
}

.map-legend {
    background: var(--white);
    padding: 35px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
}

.legend-title {
    font-size: 1.8rem;
    color: var(--text-dark);
    margin-bottom: 20px;
    text-align: center;
}

.legend-list {
    list-style: none;
    padding: 0;
}

.legend-list li {
    padding: 15px 20px;
    margin-bottom: 12px;
    background: var(--bg-light);
    border-radius: 8px;
    color: var(--text-dark);
    font-size: 1.05rem;
    line-height: 1.6;
    border-left: 4px solid var(--primary-color);
    text-align: center;
}

/* 校园区域点击样式 */
.area-item {
    cursor: pointer;
    transition: all 0.3s ease;
}

.area-item:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateX(5px);
}

.legend-list li strong {
    color: var(--primary-color);
    margin-right: 8px;
}

/* 教室分布区域 */
.classroom-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 30px;
}

.classroom-building {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.classroom-building:hover {
    box-shadow: var(--shadow-hover);
}

.building-header {
    background: #FFFFFF;
    color: #000000;
    padding: 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid #000000;
}

.building-header h3 {
    font-size: 1.6rem;
    margin: 0;
}

.building-badge {
    background: #000000;
    color: #FFFFFF;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
}

.building-content {
    padding: 25px;
}

.building-info {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.floor-list {
    margin-bottom: 20px;
}

.floor-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid #eee;
}

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

.floor-item strong {
    color: var(--primary-color);
    min-width: 50px;
}

.floor-item span {
    color: var(--text-dark);
}

.building-features {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.feature-tag {
    background: var(--bg-light);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--text-dark);
}

/* 快递站分布区域 */
.express-tips {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 3rem;
}

.tip-card {
    background: var(--white);
    padding: 25px;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
}

.tip-icon {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.tip-card h4 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.tip-card p {
    color: var(--text-light);
}

.express-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 3rem;
}

.express-station {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.express-station:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.station-header {
    background: #FFFFFF;
    color: #000000;
    padding: 20px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid #000000;
}

.station-header h3 {
    font-size: 1.5rem;
    margin: 0;
}

.station-badge {
    background: #000000;
    color: #FFFFFF;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.station-badge.hot {
    background: #000000;
    color: #FFFFFF;
}

.station-content {
    padding: 25px;
}

.station-location,
.station-time {
    color: var(--text-light);
    margin-bottom: 15px;
    font-size: 1.05rem;
}

/* 页脚 */
.footer {
    background: var(--text-dark);
    color: var(--white);
    text-align: center;
    padding: 30px 20px;
}

.footer p {
    margin-bottom: 10px;
}

/* 通用信息列表样式 */
.department-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.department-card {
    background: var(--white);
    border-radius: 15px;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all 0.3s ease;
}

.department-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.department-card-title {
    background: #FFFFFF;
    color: #000000;
    padding: 20px 25px;
    margin: 0;
    font-size: 1.6rem;
    text-align: center;
    border-bottom: 2px solid #000000;
}

.department-category {
    margin-bottom: 50px;
}

.department-category:last-child {
    margin-bottom: 0;
}

.category-title {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 3px solid var(--primary-color);
    position: relative;
}

.category-title::before {
    content: '▪';
    margin-right: 10px;
    color: var(--primary-color);
}

.department-list {
    list-style: none;
    padding: 25px;
    margin: 0;
}

.department-list li {
    padding: 15px 20px;
    margin-bottom: 12px;
    background: var(--bg-light);
    border-radius: 8px;
    color: var(--text-dark);
    font-size: 1.05rem;
    line-height: 1.8;
    border-left: 4px solid #000000;
    cursor: pointer;
    transition: all 0.3s ease;
}

.department-list li:hover {
    background: #000000;
    color: #FFFFFF;
    transform: translateX(5px);
}

.department-list li:last-child {
    margin-bottom: 0;
}

/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: var(--white);
    margin: 5% auto;
    padding: 0;
    border-radius: 15px;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    animation: slideDown 0.3s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-close {
    color: #000000;
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 35px;
    font-weight: bold;
    cursor: pointer;
    z-index: 1;
    transition: all 0.3s ease;
}

.modal-close:hover {
    transform: scale(1.2);
}

.modal-title {
    background: #FFFFFF;
    color: #000000;
    padding: 25px 30px;
    margin: 0;
    font-size: 1.8rem;
    position: relative;
    border-bottom: 2px solid #000000;
}

.modal-body {
    padding: 30px;
    overflow-y: auto;
    flex: 1;
}

.modal-image {
    width: 100%;
    height: auto;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.modal-description {
    color: var(--text-dark);
    line-height: 1.8;
    font-size: 1.1rem;
}

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

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.department-list li strong {
    color: var(--primary-color);
    margin-right: 8px;
}

/* 社团列表样式 */
.club-container {
    max-width: 900px;
    margin: 0 auto;
}

/* 社团更新提示 */
.coming-soon-notice {
    text-align: center;
    margin-top: 30px;
    padding: 20px;
    font-size: 1.1rem;
    color: #666;
    font-style: italic;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
}

.club-list {
    list-style: none;
    padding: 0;
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 30px;
}

.club-list li {
    padding: 15px 20px;
    margin-bottom: 12px;
    background: var(--bg-light);
    border-radius: 8px;
    color: var(--text-dark);
    font-size: 1.05rem;
    line-height: 1.8;
    border-left: 4px solid #000000;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    text-align: center;
}

.club-list li:hover {
    background: #000000;
    color: #FFFFFF;
    transform: translateX(5px);
}

.club-list li:last-child {
    margin-bottom: 0;
}

.info-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
}

.info-item {
    background: var(--white);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.info-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

/* 教学楼项点击样式 */
.classroom-item {
    cursor: pointer;
}

.classroom-item:hover {
    background: var(--bg-light);
}

/* 教学楼弹窗楼层列表 */
.building-floors {
    padding: 20px 0;
}

.floor-list-modal {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 15px;
}

.floor-item-modal {
    background: var(--bg-light);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    border: 2px solid var(--primary-color);
    transition: all 0.3s ease;
}

.floor-item-modal:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: scale(1.05);
}

/* 有图片的楼层样式增强 */
.floor-item-modal[style*="cursor: pointer"] {
    position: relative;
    background: linear-gradient(135deg, #f0f9f4 0%, #e3f1e6 100%);
    border-color: #4CAF50;
}

.floor-item-modal[style*="cursor: pointer"]::after {
    content: '📷';
    position: absolute;
    top: 5px;
    right: 8px;
    font-size: 1rem;
}

.floor-item-modal[style*="cursor: pointer"]:hover {
    background: linear-gradient(135deg, #4CAF50 0%, #388E3C 100%);
    transform: scale(1.08);
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.4);
}

.info-item h3 {
    font-size: 1.4rem;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.info-item p {
    color: var(--text-dark);
    line-height: 1.8;
    font-size: 1.05rem;
}

/* 地点信息列表样式 */
.place-info-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.place-info-list li {
    padding: 8px 0;
    color: var(--text-dark);
    font-size: 1.05rem;
    line-height: 1.8;
    border-bottom: 1px dashed rgba(76, 175, 80, 0.2);
}

.place-info-list li:last-child {
    border-bottom: none;
}

/* 注意事项网格 */
.notice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.notice-category {
    background: var(--white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.notice-category h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    border-bottom: 2px solid var(--bg-light);
    padding-bottom: 10px;
}

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

.notice-list li {
    padding: 12px 0;
    padding-left: 25px;
    position: relative;
    color: var(--text-dark);
    line-height: 1.8;
    font-size: 1.05rem;
}

.notice-list li::before {
    content: '•';
    position: absolute;
    left: 5px;
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: bold;
}

/* 主页各区域背景美化 */
#campus-map {
    background: linear-gradient(90deg, #e3f1e6 0%, #cfe9d8 50%, #e3f1e6 100%),
                radial-gradient(600px 220px at 0% 0%, rgba(80, 160, 120, 0.08) 0%, rgba(80, 160, 120, 0) 60%),
                repeating-radial-gradient(circle at 0 0, rgba(80, 160, 120, 0.05) 0px, rgba(80, 160, 120, 0.05) 2px, rgba(80, 160, 120, 0) 3px, rgba(80, 160, 120, 0) 20px);
    background-blend-mode: soft-light, normal, normal;
    background-size: auto, auto, 48px 48px;
    background-position: center, center, 0 0;
}

#classroom {
    background: linear-gradient(90deg, #e3f1e6 0%, #cfe9d8 50%, #e3f1e6 100%),
                radial-gradient(600px 220px at 100% 0%, rgba(80, 160, 120, 0.08) 0%, rgba(80, 160, 120, 0) 60%),
                repeating-radial-gradient(circle at 0 0, rgba(80, 160, 120, 0.05) 0px, rgba(80, 160, 120, 0.05) 2px, rgba(80, 160, 120, 0) 3px, rgba(80, 160, 120, 0) 20px);
    background-blend-mode: soft-light, normal, normal;
    background-size: auto, auto, 48px 48px;
    background-position: center, center, 0 0;
}

#express {
    background: linear-gradient(90deg, #e3f1e6 0%, #cfe9d8 50%, #e3f1e6 100%),
                radial-gradient(600px 220px at 0% 100%, rgba(80, 160, 120, 0.08) 0%, rgba(80, 160, 120, 0) 60%),
                repeating-radial-gradient(circle at 0 0, rgba(80, 160, 120, 0.05) 0px, rgba(80, 160, 120, 0.05) 2px, rgba(80, 160, 120, 0) 3px, rgba(80, 160, 120, 0) 20px);
    background-blend-mode: soft-light, normal, normal;
    background-size: auto, auto, 48px 48px;
    background-position: center, center, 0 0;
}

#campus-food {
    background: linear-gradient(90deg, #e3f1e6 0%, #cfe9d8 50%, #e3f1e6 100%),
                radial-gradient(600px 220px at 100% 100%, rgba(80, 160, 120, 0.08) 0%, rgba(80, 160, 120, 0) 60%),
                repeating-radial-gradient(circle at 0 0, rgba(80, 160, 120, 0.05) 0px, rgba(80, 160, 120, 0.05) 2px, rgba(80, 160, 120, 0) 3px, rgba(80, 160, 120, 0) 20px);
    background-blend-mode: soft-light, normal, normal;
    background-size: auto, auto, 48px 48px;
    background-position: center, center, 0 0;
}

#outside-food {
    background: linear-gradient(90deg, #e3f1e6 0%, #cfe9d8 50%, #e3f1e6 100%),
                radial-gradient(600px 220px at 0% 0%, rgba(80, 160, 120, 0.08) 0%, rgba(80, 160, 120, 0) 60%),
                repeating-radial-gradient(circle at 0 0, rgba(80, 160, 120, 0.05) 0px, rgba(80, 160, 120, 0.05) 2px, rgba(80, 160, 120, 0) 3px, rgba(80, 160, 120, 0) 20px);
    background-blend-mode: soft-light, normal, normal;
    background-size: auto, auto, 48px 48px;
    background-position: center, center, 0 0;
}

#outside-fun {
    background: linear-gradient(90deg, #e3f1e6 0%, #cfe9d8 50%, #e3f1e6 100%),
                radial-gradient(600px 220px at 100% 0%, rgba(80, 160, 120, 0.08) 0%, rgba(80, 160, 120, 0) 60%),
                repeating-radial-gradient(circle at 0 0, rgba(80, 160, 120, 0.05) 0px, rgba(80, 160, 120, 0.05) 2px, rgba(80, 160, 120, 0) 3px, rgba(80, 160, 120, 0) 20px);
    background-blend-mode: soft-light, normal, normal;
    background-size: auto, auto, 48px 48px;
    background-position: center, center, 0 0;
}

#departments {
    background: linear-gradient(90deg, #e3f1e6 0%, #cfe9d8 50%, #e3f1e6 100%),
                radial-gradient(600px 220px at 0% 100%, rgba(80, 160, 120, 0.08) 0%, rgba(80, 160, 120, 0) 60%),
                repeating-radial-gradient(circle at 0 0, rgba(80, 160, 120, 0.05) 0px, rgba(80, 160, 120, 0.05) 2px, rgba(80, 160, 120, 0) 3px, rgba(80, 160, 120, 0) 20px);
    background-blend-mode: soft-light, normal, normal;
    background-size: auto, auto, 48px 48px;
    background-position: center, center, 0 0;
}

#clubs {
    background: linear-gradient(90deg, #e3f1e6 0%, #cfe9d8 50%, #e3f1e6 100%),
                radial-gradient(600px 220px at 100% 100%, rgba(80, 160, 120, 0.08) 0%, rgba(80, 160, 120, 0) 60%),
                repeating-radial-gradient(circle at 0 0, rgba(80, 160, 120, 0.05) 0px, rgba(80, 160, 120, 0.05) 2px, rgba(80, 160, 120, 0) 3px, rgba(80, 160, 120, 0) 20px);
    background-blend-mode: soft-light, normal, normal;
    background-size: auto, auto, 48px 48px;
    background-position: center, center, 0 0;
}

#activities {
    background: linear-gradient(90deg, #e3f1e6 0%, #cfe9d8 50%, #e3f1e6 100%),
                radial-gradient(600px 220px at 0% 0%, rgba(80, 160, 120, 0.08) 0%, rgba(80, 160, 120, 0) 60%),
                repeating-radial-gradient(circle at 0 0, rgba(80, 160, 120, 0.05) 0px, rgba(80, 160, 120, 0.05) 2px, rgba(80, 160, 120, 0) 3px, rgba(80, 160, 120, 0) 20px);
    background-blend-mode: soft-light, normal, normal;
    background-size: auto, auto, 48px 48px;
    background-position: center, center, 0 0;
}

#notices {
    background: linear-gradient(90deg, #e3f1e6 0%, #cfe9d8 50%, #e3f1e6 100%),
                radial-gradient(600px 220px at 50% 0%, rgba(80, 160, 120, 0.08) 0%, rgba(80, 160, 120, 0) 60%),
                repeating-radial-gradient(circle at 0 0, rgba(80, 160, 120, 0.04) 0px, rgba(80, 160, 120, 0.04) 2px, rgba(80, 160, 120, 0) 3px, rgba(80, 160, 120, 0) 22px);
    background-blend-mode: soft-light, normal, normal;
    background-size: auto, auto, 48px 48px;
    background-position: center, center, 0 0;
}

/* 字体应用 */
.section-title,
.hero-content h2,
.legend-title,
.category-title,
.building-header h3,
.station-header h3,
.department-card-title,
.modal-title,
.info-item h3,
.activity-title {
    font-family: var(--font-serif);
}

.nav-link,
.cta-button,
.notice-list li,
.info-item p {
    font-family: var(--font-sans);
    letter-spacing: 0.2px;
}


/* 活动预告区域样式 */
.activities-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.activity-item {
    background: var(--white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border-left: 5px solid var(--primary-color);
}

.activity-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.activity-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.activity-date {
    font-size: 0.95rem;
    color: var(--text-light);
    font-weight: 600;
}

.activity-badge {
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    background: #f0f0f0;
    color: var(--text-dark);
}

.activity-badge.hot {
    background: #FF6B6B;
    color: var(--white);
}

.activity-title {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 12px;
    font-family: var(--font-serif);
}

.activity-desc {
    color: var(--text-light);
    font-size: 1rem;
    margin-bottom: 12px;
}

.activity-content {
    color: var(--text-dark);
    line-height: 1.8;
    font-size: 1.05rem;
}

/* 响应式设计 */
.navbar::before,
.navbar::after { display: none !important; }

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: -100%;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow);
        transition: left 0.3s ease;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-content h2 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .map-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .map-legend {
        padding: 25px;
    }

    .legend-list li {
        font-size: 0.95rem;
        padding: 12px 15px;
    }

    .classroom-grid {
        grid-template-columns: 1fr;
    }

    .express-grid {
        grid-template-columns: 1fr;
    }

    .info-list {
        grid-template-columns: 1fr;
    }

    .notice-grid {
        grid-template-columns: 1fr;
    }

    .department-grid {
        grid-template-columns: 1fr;
    }
}