:root {
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        body {
            font-family: 'Microsoft YaHei', Arial, sans-serif;
            margin: 0;
            background-color: #ffffff;
            color: #333;
            overflow-x: hidden;
            transition: background-image 0.5s ease;
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 70px 50px 130px 50px;
            box-sizing: border-box;
        }
        header {
            padding: 15px 0;
            background-color: #ffffff;
            background-color: rgba(255, 255, 255, 0.8);
            box-shadow: 0 5px 6px rgba(0, 0, 0, 0.1);
        }
        .header-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 50px;
            box-sizing: border-box;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .logo:hover {
            transform: translateY(-2px);
        }        
        
        .logo i {
            color: #3B82F6;
            font-size: 28px;
        }
        .logo h1 {
            font-size: 22px;
            font-weight: 600;
            color: #3B82F6;
            margin: 0;
            letter-spacing: 0.5px;
        }
        .logo a {
            text-decoration: none;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 20px;
            margin: 0;
            padding: 0;
            align-items: center;
        }
        nav a {
            color: #6B7280;
            text-decoration: none;
            transition: color 0.3s;
        }
        nav a:hover {
            color: #3B82F6;
        }
        
        /* 天气信息样式 */
        .weather-info {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 5px 10px;
            border-radius: 5px;
            background-color: #ffffff;
            cursor: pointer;
            transition: background-color 0.3s;
            position: relative;
            background-color: rgba(255, 255, 255, 0.0);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.0);
        }
        .weather-info:hover {
            background-color: #f0f0f0;
        }
        .weather-icon {
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .weather-temp {
            font-weight: bold;
            color: #3B82F6;
            font-size: 15px;
        }
        .weather-city {
            font-size: 15px;
            color: #6B7280;
        }
        
        /* 天气详情弹窗 */
        .weather-detail {
            display: none;
            position: absolute;
            top: 100%;
            right: 0;
            background-color: white;
            border-radius: 5px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            padding: 15px;
            z-index: 1000;
            min-width: 155px;
            margin-top: 5px;
        }
        .weather-detail.show {
            display: block;
        }
        .weather-detail-item {
            display: flex;
            justify-content: space-between;
            margin-bottom: 8px;
            font-size: 13px;
        }
        .weather-detail-label {
            color: #6B7280;
        }
        .weather-detail-value {
            font-weight: bold;
            color: #1F2937;
        }
        .weather-detail-city {
            font-size: 15px;
            font-weight: bold;
            margin-bottom: 10px;
            color: #3B82F6;
            text-align: center;
            border-bottom: 1px solid #eee;
            padding-bottom: 8px;
        }
        
        /* 省份选择器样式 */
        .province-selector {
            position: relative;
            display: inline-block;
        }
        .province-display {
            cursor: pointer;
            padding: 5px 10px;
            border-radius: 5px;
            background-color: #ffffff;
            display: flex;
            align-items: center;
            gap: 5px;
            background-color: rgba(255, 255, 255, 0.0);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.0);
        }
        .province-display i {
            font-size: 15px;
        }
        .province-dropdown {
            display: none;
            position: absolute;
            top: 100%;
            right: 0;
            background-color: white;
            border-radius: 5px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            padding: 10px;
            z-index: 1000;
            min-width: 155px;
            max-height: 300px;
            overflow-y: auto;
        }
        .province-dropdown.show {
            display: block;
        }
        .province-option {
            padding: 5px 10px;
            cursor: pointer;
            border-radius: 5px;
        }
        .province-option:hover {
            background-color: #f0f0f0;
        }
        
        /* 城市选择器样式 */
        .city-selector {
            position: relative;
            display: inline-block;
            margin-left: 3px;
        }
        .city-display {
            cursor: pointer;
            padding: 5px 10px;
            border-radius: 5px;
            background-color: #ffffff;
            display: flex;
            align-items: center;
            gap: 5px;
            font-size: 15px;
            background-color: rgba(255, 255, 255, 0.0);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.0);
        }
        .city-dropdown {
            display: none;
            position: absolute;
            top: 100%;
            right: 0;
            background-color: white;
            border-radius: 5px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            padding: 10px;
            z-index: 1000;
            min-width: 155px;
            max-height: 300px;
            overflow-y: auto;
        }
        .city-dropdown.show {
            display: block;
        }
        .city-option {
            padding: 5px 10px;
            cursor: pointer;
            border-radius: 5px;
            font-size: 13px;
        }
        .city-option:hover {
            background-color: #f0f0f0;
        }
        
        /* Hero Section */
        .hero {
            text-align: center;
            padding: 50px 5px;
            color: #333;
            margin-bottom: 50px;
            background-color: rgba(255, 255, 255, 0.0);
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.0);
        }
        .hero h2 {
            font-size: 3.0rem;
            margin-bottom: 25px;
            color: #3B82F6;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 1200px;
            margin: 0 auto 10px;
            opacity: 0.9;
            color: #6B7280;
        }
        
        /* Features Section - 3列布局 */
        .features {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 50px;
            margin-bottom: 100px;
            justify-items: center;
        }
        .feature-card {
            background-color: white;
            border-radius: 10px;
            padding: 23px;
            transition: transform 0.3s, box-shadow 0.3s;
            width: 100%;
            min-height: 190px;
            text-decoration: none;
            display: block;
            color: inherit;
            box-sizing: border-box;
            background-color: rgba(255, 255, 255, 0.8);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
        }
        .feature-card h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
            color: #3B82F6;
        }
        .feature-card p {
            color: #6B7280;
            line-height: 1.5;
            font-size: 1.0rem;
        }
        
        /* 小卡片容器样式 */
        .small-cards-container {
            background-color: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s, box-shadow 0.3s;
            width: 100%;
            min-height: 100px;
            padding: 25px;
            display: flex;
            flex-direction: column;
            box-sizing: border-box;
            background-color: rgba(255, 255, 255, 0.6);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .small-cards-container:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .small-cards-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            grid-template-rows: repeat(2, 1fr);
            gap: 15px;
            flex: 1;
        }
        .small-card {
            background-color: #f8f9fa;
            border-radius: 15px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            transition: transform 0.2s, background-color 0.2s;
            padding: 5px;
            text-decoration: none;
            color: inherit;
            background-color: rgba(255, 255, 255, 0.0);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.0);
        }
        .small-card:hover {
            transform: scale(1.05);
            background-color: #e9ecef;
        }
        .small-card i {
            color: #3B82F6;
            font-size: 25px;
            margin-bottom: 8px;
        }
        .small-card h4 {
            font-size: 1.0rem;
            margin: 0;
            color: #6B7280;
            text-align: center;
        }
        
        /* 设置按钮样式 */
        .settings-btn {
            background: none;
            border: none;
            color: #6B7280;
            cursor: pointer;
            font-size: 1.2rem;
            transition: color 0.3s, transform 0.3s;
        }
        
        .settings-btn:hover {
            color: #3B82F6;
            transform: rotate(30deg);
        }
        
        /* 设置面板样式 */
        .settings-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 15;
            display: none;
        }
        
        .settings-overlay.active {
            display: block;
        }
        
        .settings-panel {
            display: none;
            position: fixed;
            right: 0;
            top: 0;
            bottom: 0;
            width: 300px;
            background-color: white;
            box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
            z-index: 20;
            padding: 20px;
            overflow-y: auto;
            transform: translateX(100%);
            transition: transform 0.3s ease;
        }
        
        .settings-panel.active {
            display: block;
            transform: translateX(0);
        }
        
        .settings-section {
            margin-bottom: 20px;
            padding-bottom: 20px;
            border-bottom: 1px solid #d0d7de;
        }
        
        .settings-section h3 {
            margin-top: 0;
            margin-bottom: 15px;
        }
        
        .radio-group {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        
        .radio-option {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .bg-preview {
            width: 100%;
            height: 100px;
            margin-top: 10px;
            background-size: cover;
            background-position: center;
            border-radius: 4px;
            border: 1px solid #d0d7de;
        }
        
        .file-input {
            width: 100%;
            margin-top: 10px;
        }
        
        /* 固定壁纸选择区域 */
        .fixed-wallpapers {
            margin-top: 15px;
        }
        
        .fixed-wallpapers h4 {
            margin: 15px 0 10px 0;
            color: #1F2937;
            font-size: 1rem;
        }
        
        .wallpaper-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 8px;
            margin-bottom: 15px;
        }
        
        .wallpaper-thumb {
            width: 100%;
            height: 50px;
            border-radius: 4px;
            cursor: pointer;
            background-size: cover;
            background-position: center;
            border: 2px solid transparent;
            transition: border-color 0.2s, transform 0.2s;
        }
        
        .wallpaper-thumb:hover {
            transform: scale(1.05);
        }
        
        .wallpaper-thumb.selected {
            border-color: #3B82F6;
            box-shadow: 0 0 8px rgba(59, 130, 246, 0.6);
        }
        
        /* 帮助面板样式 */
        .help-panel {
            display: none;
            position: fixed;
            right: 0;
            top: 0;
            bottom: 0;
            width: 300px;
            background-color: white;
            box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
            z-index: 20;
            padding: 20px;
            overflow-y: auto;
            transform: translateX(-100%);
            transition: transform 0.3s ease;
        }
        
        .help-panel.active {
            display: block;
            transform: translateX(0);
        }
        
        .help-section {
            margin-bottom: 20px;
            padding-bottom: 20px;
            border-bottom: 1px solid #d0d7de;
        }
        
        .help-section h3 {
            margin-top: 0;
            margin-bottom: 15px;
            color: #3B82F6;
        }
        
        .help-item {
            margin-bottom: 15px;
        }
        
        .help-item h4 {
            margin: 0 0 8px 0;
            color: #1F2937;
        }
        
        .help-item p {
            margin: 0;
            color: #6B7280;
            line-height: 1.5;
        }
        
        .close-btn {
            position: absolute;
            top: 15px;
            right: 15px;
            background: none;
            border: none;
            font-size: 1.2rem;
            cursor: pointer;
            color: #6B7280;
        }
        
        .close-btn:hover {
            color: #3B82F6;
        }
        
        footer {
            /* 距离底部30px */
            bottom: 20px;
            /* 水平居中 */
            left: 50%;
            transform: translateX(-50%);
            /* 固定定位 */
            position: relative; 
            /* 确保内容不溢出 */
            max-width: calc(100% - 10px);
            /* 为小屏幕添加响应式保护 */
            background-color: rgba(255, 255, 255, 0.0);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.0);
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            text-align: center;
            padding: 0 20px;
            box-sizing: border-box;
        }
        .footer-container p {
            margin: 4px 0;
        }
        .footer-container .contact {
            font-size: 15px;
            color: #6B7280;
        }
        
        /* 访问人数和在线人数容器样式 */
        .count-container {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-top: 10px;
            flex-wrap: wrap;
        }
        
        /* 访问人数样式 */
        .visitor-count {
            font-size: 13px;
            color: #3B82F6;

        }
        
        /* 在线人数样式 */
        .online-count {
            font-size: 13px;
            color: #3B82F6;

        }

       @media (max-height: 820px) {
         footer {
            /* 改用相对定位，避免覆盖内容 */
            position: relative;
            /* 距离上方内容底部30px */
            margin-top: 10px;
         }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 39px 60px 5px 60px;
            box-sizing: border-box;
        }
        .hero {
            text-align: center;
            padding: 19px 5px;
            color: #333;
            margin-bottom: 50px;
        }

       }
        
        @media (max-width: 1005px) {
         .container {
            padding: 10px;
         }
         .header-container {
            gap: 15px;
            padding: 0 20px;
         }
         nav ul {
            gap: 12px;
            flex-wrap: wrap;
            justify-content: center;
         }
        /* Hero Section */
        .hero {
            text-align: center;
            padding: 15px 2px;
            color: #333;
            margin-bottom: 3px;
        }
        .hero h2 {
            font-size: 1.9rem;
            margin-bottom: 5px;
            color: #3B82F6;
        }
        .hero p {
            font-size: 1.0rem;
            max-width: 100%;
            padding: 0 5px;
            color: #6B7280;
        }

            /* 移动端改为1列 */
            .features {
                grid-template-columns: 1fr;
                gap: 15px;
                padding: 0 10px;
                margin-bottom: 10px;
            }
            .feature-card, .small-cards-container {
                width: 100%;
                padding: 15px;
            }
            .feature-card h3 {
                font-size: 1.3rem;
            }
            .feature-card p {
                font-size: 1.0rem;
            }
            .faq-section {
                padding: 25px;
                margin-bottom: 5px;
            }
            .faq-section h3 {
                font-size: 1.3rem;
            }
            .faq-item h4 {
                font-size: 1.0rem;
            }
            .small-card h4 {
                font-size: 1.0rem;
                margin: 0;
                color: #1F2937;
                text-align: center;
            }
            .weather-info {
            display: none;
            }
            .city-selector {
            display: none;
            }

footer {
            /* 改用相对定位，避免覆盖内容 */
            position: relative;
            /* 距离上方内容底部30px */
            margin-top: 25px;
}
.footer-container {
    max-width: 100%;
    margin: 0 auto;
    text-align: center;
    padding: 0 50px;
    box-sizing: border-box;
}
.footer-container p {
    margin: 4px 0;
}
.footer-container .contact {
    font-size: 15px;
    color: #6B7280;
}
.visitor-count {
    font-size: 15px;
}
}

        @media (max-width: 480px) {
            .container {
               padding: 10px;
            }
            .header-container {
               gap: 15px;
               padding: 0 20px;
            }
           .hero h2 {
                font-size: 1.7rem;
            }
            .hero p {
                font-size: 0.9rem;
            }
            .features {
                grid-template-columns: 1fr;
                gap: 15px;
                padding: 0 10px;
                margin-bottom: 10px;
            }
            .feature-card, .small-cards-container {
                width: 100%;
                padding: 15px;
                min-height: 10px;
            }
            .feature-card h3 {
                font-size: 1.3rem;
            }
            .small-card h4 {
                font-size: 1.0rem;
                margin: 0;
                color: #1F2937;
                text-align: center;
            }
            .faq-section h3 {
                font-size: 1.3rem;
            }
            .small-card i {
                font-size: 20px;
            }
            footer {
                display: none;
            }
            .visitor-count {
                font-size: 15px;
            }
            
            /* 移动端省份选择器样式调整 */
            .province-selector {
                margin-top: 10px;
            }
            
            /* 移动端天气信息样式调整 */
            .weather-info {
                padding: 3px 6px;
            }
            .weather-temp, .weather-city {
                font-size: 12px;
            }
            .weather-icon {
                width: 18px;
                height: 18px;
            }
            
            /* 移动端城市选择器隐藏 */
            .city-selector {
                display: none;
            }
            /* 移动端设置按钮隐藏 */
            .settings-btn {
                display: none;
            }
            /* 移动端设置面板 */
            .settings-panel {
                width: 80%;
            }
            
            .help-panel {
                width: 80%;
            }
            
            .wallpaper-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }