/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --dark-bg: #0f0f1a;
    --card-bg: rgba(255, 255, 255, 0.1);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    background: rgba(15, 15, 26, 0.95);
    backdrop-filter: blur(10px);
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: flex-start;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5em;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-icon {
    font-size: 1.8em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    margin-left: 60px;
}

.nav-item a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 10px 20px;
    border-radius: 25px;
}

.nav-item a:hover,
.nav-item.active a {
    color: var(--text-primary);
    background: rgba(102, 126, 234, 0.2);
}

/* 下拉菜单 */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
}

.dropdown-arrow {
    font-size: 0.7em;
    transition: transform 0.3s ease;
}

.dropdown.open .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    min-width: 200px;
    background: rgba(15, 15, 26, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 10px 0;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    z-index: 1001;
}

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

.dropdown-item {
    padding: 0;
}

.dropdown-item a {
    display: block;
    padding: 12px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    border-radius: 8px;
    margin: 5px 10px;
}

.dropdown-item a:hover,
.dropdown-item.active a {
    background: rgba(102, 126, 234, 0.2);
    color: var(--text-primary);
}

/* 平台切换标签 */
.platform-tabs {
    display: flex;
    gap: 15px;
    margin-top: 40px;
    justify-content: center;
    flex-wrap: wrap;
}

.platform-tab {
    padding: 12px 30px;
    font-size: 1em;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 30px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.platform-tab:hover {
    background: rgba(102, 126, 234, 0.2);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.platform-tab.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-color: var(--primary-color);
    color: white;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

/* Hero 区域 */
.hero {
    margin-top: 80px;
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.3), rgba(118, 75, 162, 0.3));
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(240, 147, 251, 0.1) 0%, transparent 50%);
    animation: float 20s infinite linear;
}

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

.hero-title {
    font-size: 4em;
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.hero-subtitle {
    font-size: 1.5em;
    color: var(--text-secondary);
    margin-bottom: 40px;
    position: relative;
}

.hero-btn {
    padding: 18px 50px;
    font-size: 1.2em;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
    position: relative;
}

.hero-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.6);
}

/* 壁纸展示区 */
.gallery-section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5em;
    margin-bottom: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stats-bar {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    padding: 20px 40px;
    background: var(--card-bg);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.stat-number {
    display: block;
    font-size: 2em;
    font-weight: 800;
    color: var(--accent-color);
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9em;
    color: var(--text-secondary);
}

.wallpaper-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 50px;
}

/* 头像网格 */
.head-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}

.head-card {
    border-radius: 50%;
    overflow: hidden;
}

.head-wrapper {
    padding-top: 100%;
    border-radius: 50%;
}

.head-wrapper img {
    border-radius: 50%;
}

.wallpaper-card {
    background: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
    position: relative;
}

.wallpaper-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    border-color: var(--primary-color);
}

.card-image-wrapper {
    position: relative;
    width: 100%;
    padding-top: 100%;
    overflow: hidden;
    border-radius: 15px;
}

.card-image-wrapper img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.5s ease, transform 0.3s ease;
}

.wallpaper-card:hover .card-image-wrapper img {
    transform: scale(1.1);
}

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    opacity: 0;
    transition: var(--transition);
}

.wallpaper-card:hover .card-overlay {
    opacity: 1;
}

.card-btn {
    padding: 12px 25px;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    font-size: 0.95em;
}

.btn-preview {
    background: rgba(102, 126, 234, 0.9);
    color: white;
}

.btn-preview:hover {
    background: var(--primary-color);
}

.btn-download {
    background: rgba(240, 147, 251, 0.9);
    color: white;
}

.btn-download:hover {
    background: var(--accent-color);
}

.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px;
    color: var(--text-secondary);
    font-size: 1.2em;
}

/* 微博热搜列表 */
.weibo-hot-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 50px;
}

.hot-item {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    gap: 20px;
    transition: var(--transition);
}

.hot-item:hover {
    border-color: var(--primary-color);
    transform: translateX(5px);
}

.hot-rank {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5em;
    font-weight: 800;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.hot-rank.top-rank {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    font-size: 1.8em;
}

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

.hot-title {
    font-size: 1.2em;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-weight: 600;
}

.hot-desc {
    color: var(--text-secondary);
    font-size: 0.9em;
    display: flex;
    align-items: center;
    gap: 10px;
}

.hot-category {
    padding: 4px 12px;
    background: rgba(240, 147, 251, 0.2);
    border-radius: 15px;
    font-size: 0.85em;
    color: var(--accent-color);
}

.load-more-container {
    text-align: center;
}

.load-more-btn {
    padding: 15px 40px;
    font-size: 1.1em;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.load-more-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.6);
}

/* 功能特点 */
.features-section {
    padding: 100px 0;
    background: rgba(102, 126, 234, 0.1);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.feature-icon {
    font-size: 3em;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5em;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 1em;
}

/* 页脚 */
.footer {
    background: rgba(15, 15, 26, 0.95);
    padding: 60px 0 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 1.3em;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-section p,
.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    line-height: 1.8;
}

.footer-section a:hover {
    color: var(--accent-color);
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
}

/* 预览模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    animation: fadeIn 0.3s ease;
}

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

.modal-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    margin: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.modal-close {
    position: absolute;
    top: 30px;
    right: 50px;
    color: white;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--accent-color);
}

.modal-image {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 10px;
}

.modal-download-btn {
    margin-top: 30px;
    padding: 15px 40px;
    font-size: 1.1em;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.modal-download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.6);
}

/* Toast 通知 */
.toast {
    position: fixed;
    top: 100px;
    right: 30px;
    padding: 15px 30px;
    border-radius: 10px;
    color: white;
    font-weight: 500;
    z-index: 3000;
    opacity: 0;
    transform: translateX(100px);
    transition: all 0.3s ease;
}

.toast.show {
    opacity: 1;
    transform: translateX(0);
}

.toast.success {
    background: linear-gradient(135deg, #00c853, #00e676);
}

.toast.error {
    background: linear-gradient(135deg, #ff5252, #ff1744);
}

/* 通知模态框 */
.notice-modal {
    z-index: 2001;
}

.notice-modal-content {
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    background: rgba(15, 15, 26, 0.98);
}

.notice-display-item {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 15px;
    border-left: 4px solid var(--primary-color);
}

.notice-display-item.notice-high {
    border-left-color: #f093fb;
    background: rgba(240, 147, 251, 0.1);
    border: 1px solid rgba(240, 147, 251, 0.3);
}

.notice-display-title {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    color: var(--text-primary);
    font-size: 1.1em;
}

.notice-display-icon {
    font-size: 1.2em;
}

.notice-display-date {
    color: var(--text-secondary);
    font-size: 0.85em;
    margin-bottom: 10px;
}

.notice-display-content {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 通知公告页面样式 */
.notice-page-section {
    padding: 120px 0 80px;
    min-height: 100vh;
}

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

.notice-page-title {
    font-size: 3.5em;
    font-weight: 800;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.notice-page-subtitle {
    font-size: 1.3em;
    color: var(--text-secondary);
}

.notice-page-content {
    width: 100%;
}

.notice-page-item {
    background: var(--card-bg);
    border-radius: 25px;
    padding: 0;
    margin-bottom: 40px;
    border: 2px solid rgba(255, 255, 255, 0.15);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.notice-page-item:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.notice-page-item.notice-page-high {
    background: rgba(240, 147, 251, 0.12);
    border: 3px solid rgba(240, 147, 251, 0.4);
}

.notice-page-item.notice-page-high::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 8px;
    background: linear-gradient(180deg, var(--accent-color), var(--secondary-color));
}

.notice-page-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 35px 40px 35px 40px;
    padding-right: 150px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2), rgba(118, 75, 162, 0.2));
    border-bottom: 3px solid rgba(255, 255, 255, 0.15);
    flex-wrap: wrap;
    gap: 20px;
}

.notice-page-item-title {
    display: flex;
    align-items: center;
    gap: 18px;
    font-size: 2em;
    color: var(--text-primary);
    font-weight: 700;
    flex: 1;
}

.notice-page-item-icon {
    font-size: 1.8em;
}

.notice-page-item-date {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 12px 30px;
    border-radius: 30px;
    color: white;
    font-size: 1.15em;
    font-weight: 700;
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    white-space: nowrap;
}

.notice-page-item-body {
    color: var(--text-secondary);
    line-height: 2.2;
    font-size: 1.35em;
    padding: 40px;
    background: rgba(255, 255, 255, 0.03);
}

.notice-page-item-badge {
    position: absolute;
    top: 25px;
    right: 25px;
    background: linear-gradient(135deg, var(--accent-color), var(--secondary-color));
    color: white;
    padding: 8px 22px;
    border-radius: 22px;
    font-size: 0.9em;
    font-weight: 800;
    animation: pulse 2s infinite;
    text-transform: uppercase;
    letter-spacing: 2px;
    z-index: 10;
}

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

.notice-page-empty {
    text-align: center;
    padding: 80px 40px;
    background: var(--card-bg);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.notice-page-empty-icon {
    font-size: 5em;
    margin-bottom: 30px;
}

.notice-page-empty h3 {
    font-size: 1.8em;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.notice-page-empty p {
    color: var(--text-secondary);
    font-size: 1.1em;
    margin-bottom: 30px;
}

.notice-page-back-btn {
    display: inline-block;
    padding: 15px 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1em;
    transition: var(--transition);
}

.notice-page-back-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.5);
}

/* 响应式设计 */
@media (max-width: 768px) {
    /* 手机端导航栏和分类菜单 */
    .navbar {
        padding: 12px 0;
    }

    .navbar .container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 0 15px;
        gap: 10px;
    }

    .logo {
        font-size: 1.1em;
    }

    .logo-icon {
        font-size: 1.4em;
    }

    /* 手机端汉堡菜单按钮 - 长方形 */
    .mobile-menu-toggle {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 6px;
        width: 45px;
        height: 45px;
        background: rgba(255, 255, 255, 0.15);
        border: 2px solid rgba(255, 255, 255, 0.3);
        border-radius: 12px;
        cursor: pointer;
        transition: var(--transition);
        backdrop-filter: blur(10px);
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        position: relative;
    }

    .mobile-menu-toggle:hover {
        background: rgba(102, 126, 234, 0.3);
        border-color: var(--primary-color);
        transform: scale(1.05);
    }

    .mobile-menu-dot {
        width: 24px;
        height: 3px;
        background: var(--text-primary);
        border-radius: 2px;
        transition: var(--transition);
        transform-origin: center;
    }

    .mobile-menu-toggle.open .mobile-menu-dot:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }

    .mobile-menu-toggle.open .mobile-menu-dot:nth-child(2) {
        opacity: 0;
        transform: scale(0);
    }

    .mobile-menu-toggle.open .mobile-menu-dot:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    /* 手机端分类容器 - 隐藏在三个点菜单里 */
    .nav-menu {
        display: none;
        position: absolute;
        top: calc(100% + 10px);
        right: 15px;
        flex-direction: column;
        width: 250px;
        background: rgba(15, 15, 26, 0.98);
        border: 2px solid rgba(255, 255, 255, 0.2);
        border-radius: 15px;
        padding: 15px;
        backdrop-filter: blur(10px);
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
        z-index: 1001;
    }

    .nav-menu.show {
        display: flex;
    }

    .nav-item {
        width: 100%;
        margin-bottom: 8px;
    }

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

    .nav-item a,
    .dropdown-toggle {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 8px;
        width: 100%;
        padding: 12px 15px;
        font-size: 0.95em;
        font-weight: 500;
        text-align: left;
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        transition: var(--transition);
        color: var(--text-secondary);
    }

    .nav-item a:hover,
    .dropdown-toggle:hover,
    .nav-item.active a {
        background: rgba(102, 126, 234, 0.2);
        border-color: var(--primary-color);
        color: var(--text-primary);
    }

    /* 手机端下拉菜单 */
    .dropdown-menu {
        display: none;
        position: static;
        width: 100%;
        min-width: auto;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        padding: 10px;
        margin-top: 10px;
        box-shadow: none;
        backdrop-filter: none;
        z-index: 1002;
    }

    .dropdown.open .dropdown-menu {
        display: block;
    }

    .dropdown-arrow {
        display: inline;
        font-size: 0.7em;
        margin-left: auto;
        transition: transform 0.3s ease;
    }

    .dropdown.open .dropdown-arrow {
        transform: rotate(180deg);
    }

    .dropdown-item {
        margin-bottom: 5px;
        padding: 0;
    }

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

    .dropdown-item a {
        display: block;
        padding: 10px 12px;
        margin: 0;
        font-size: 0.9em;
        font-weight: 400;
        background: transparent;
        border: none;
        border-radius: 8px;
        transition: var(--transition);
        color: var(--text-secondary);
    }

    .dropdown-item a:hover,
    .dropdown-item.active a {
        background: rgba(102, 126, 234, 0.25);
        color: var(--text-primary);
    }

    .hero-title {
        font-size: 2.5em;
    }

    .hero-subtitle {
        font-size: 1.2em;
    }

    .section-title {
        font-size: 1.8em;
    }

    .stats-bar {
        gap: 20px;
    }

    .stat-item {
        padding: 15px 25px;
    }

    .wallpaper-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 15px;
    }

    .modal-close {
        right: 20px;
        top: 20px;
        font-size: 30px;
    }

    /* 手机端通知公告页面样式 */
    .notice-page-title {
        font-size: 2.2em;
    }

    .notice-page-subtitle {
        font-size: 1.1em;
    }

    .notice-page-item-title {
        font-size: 1.4em;
    }

    .notice-page-item-body {
        font-size: 1.1em;
    }

    .notice-page-item-header {
        padding: 25px 20px;
        flex-direction: column;
        align-items: flex-start;
    }

    .notice-page-item-body {
        padding: 25px 20px;
    }

    .notice-page-item-badge {
        top: 20px;
        right: 20px;
        padding: 5px 15px;
        font-size: 0.75em;
    }
}

@media (max-width: 480px) {
    .platform-tabs {
        gap: 10px;
        margin-top: 30px;
    }

    .platform-tab {
        padding: 10px 20px;
        font-size: 0.9em;
    }

    .hero-btn {
        padding: 15px 30px;
        font-size: 1em;
    }

    .card-btn {
        padding: 10px 20px;
        font-size: 0.85em;
    }

    .wallpaper-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    /* 手机端通知卡片进一步优化 */
    .notice-page-item-title {
        font-size: 1.2em;
    }

    .notice-page-item-body {
        font-size: 1em;
        line-height: 2;
        padding: 20px 15px;
    }

    .notice-page-item-header {
        padding: 20px 15px;
    }

    .notice-page-item-date {
        padding: 8px 20px;
        font-size: 1em;
    }

    .notice-page-item {
        margin-bottom: 25px;
        border-radius: 18px;
    }
}