/* 基础样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            transition: opacity 0.6s ease-out, transform 0.6s ease-out;
        }
        body {
            
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f9f9f9;
            padding-top: 60px;
        }
        .delayed-fade {
            animation: fadeIn 0.5s ease-in forwards;
            animation-delay: 0.3s; /* 延迟0.5秒开始动画 */
            opacity: 0; /* 初始透明度 */
        }

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

        ::selection {
            background-color: #dddddd; 
        }
        a{
            text-decoration: none;
        }
        .container {
            max-width: 1000px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 导航栏样式 */
        .fixnav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            padding: 8px 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.8);
        }
        
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            font-size: 1.3rem;
            font-weight: 700;
            text-decoration: none;
            letter-spacing: -0.5px;
            color: #2c3e50;
        }
        
        .nav-links {
            display: flex;
            gap: 25px;
        }
        
        .nav-links a {
            text-decoration: none;
            color: #34495e;
            font-size: 0.9rem;
            transition: color 0.3s;
        }
        
        .nav-links a:hover {
            color: #3498db;
        }
        
        /* 英雄区域样式 */
        .hero {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            padding: 150px 0;
        }
        
        .profile-img {
            width: 180px;
            height: 180px;
            border-radius: 50%;
            object-fit: cover;
            margin-bottom: 30px;
            border: 5px solid white;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        .hero h1 {
            font-size: 2.2rem;
            margin-bottom: 15px;
            color: #2c3e50;
        }
        
        .hero p {
            font-size: 1.1rem;
            color: #7f8c8d;
            max-width: 600px;
            margin-bottom: 30px;
        }
        

        
        /* 关于我区域 */
        .about {
            background-color: white;
            padding: 80px 0;
        }
        
        .section-title {
            text-align: center;
            font-size: 1.8rem;
            margin-bottom: 50px;
            color: #2c3e50;
            position: relative;
        }
        
        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background-color: #3498db;
            margin: 15px auto 0;
        }
        
        .about-content {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        
        @media (min-width: 768px) {
            .about-content {
                flex-direction: row;
                gap: 50px;
            }
            
            .about-text {
                flex: 1;
            }
            
            .skills {
                flex: 1;
            }
        }
        
        .about-text p {
            margin-bottom: 20px;
            color: #666;
        }
        
        .skill-item {
            margin-bottom: 15px;
        }
        
        .skill-name {
            display: flex;
            justify-content: space-between;
            margin-bottom: 5px;
            font-size: 0.9rem;
        }
        
        .skill-bar {
            height: 8px;
            background-color: #ecf0f1;
            border-radius: 4px;
            overflow: hidden;
        }
        
        .skill-progress {
            height: 100%;
            background-color: #3498db;
        }
        
 .projects {
            padding: 80px 0;
        }
        
        .carousel-container {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            overflow: hidden;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        .project-carousel {
            display: flex;
            transition: transform 0.5s ease-in-out;
        }
        
        .carousel-item {
            min-width: 100%;
            background-color: white;
        }
        
        .project-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        
        .project-info {
            padding: 30px;
        }
        
        .project-info h3 {
            margin-bottom: 15px;
            color: #2c3e50;
            font-size: 1.5rem;
        }
        
        .project-info p {
            font-size: 1rem;
            color: #7f8c8d;
            margin-bottom: 20px;
        }
        
        
        /* 轮播控制按钮 */
        .carousel-control {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 45px;
            height: 45px;
            background-color: rgba(255, 255, 255, 0.8);
            border: none;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
            transition: all 0.3s;
            z-index: 10;
        }
        
        .carousel-control:hover {
            background-color: white;
        }
        
        .prev-btn {
            left: 15px;
        }
        
        .next-btn {
            right: 15px;
        }
        
        /* 轮播指示器 */
        .carousel-indicators {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-top: 20px;
        }
        
        .carousel-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: #ddd;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        
        .carousel-dot.active {
            background-color: #3498db;
        }
        /* 联系方式 */
        .contact {
            background-color: white;
            padding: 80px 0;
        }
        
        .contact-form {
            max-width: 600px;
            margin: 0 auto;
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        label {
            display: block;
            margin-bottom: 8px;
            color: #2c3e50;
            font-size: 0.9rem;
        }
        
        input, textarea {
            width: 100%;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-family: inherit;
            font-size: 0.9rem;
            transition: border 0.3s;
        }
        
        input:focus, textarea:focus {
            outline: none;
            border-color: #3498db;
        }
        
        textarea {
            min-height: 150px;
            resize: vertical;
        }
        
        .btn {
            display: inline-block;
            background-color: #3498db;
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background-color 0.3s;
        }
        
        .btn:hover {
            background-color: #2980b9;
        }
        
        /* 页脚 */
        footer {
            background-color: #2c3e50;
            color: white;
            text-align: center;
            padding: 30px 0;
            margin-top: 50px;
        }
        
        .footer-text {
            font-size: 0.9rem;
            opacity: 0.8;
        }
        
        /* 滚动动画 */
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.9s ease-out, transform 0.9s ease-out;
        }
        
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .announcement {
            background-color: #5eb95e99;
            color: white;
            padding: 20px;
            text-align: center;
            position: fixed;
            bottom: 0;
            width: 100%;
            box-shadow: 0 -2px 3px rgba(0,0,0,0.1);
            display: flex;
            justify-content: space-between;
            align-items: center;
            z-index: 1000;
            transition: transform 0.3s ease-in-out;
            transform: translateY(100%);
            z-index: 1000000;
        }
        .announcement.show {
            transform: translateY(0);
        }
        .close-btn {
            background: none;
            border: none;
            color: inherit;
            cursor: pointer;
            font-size: 1.5em;
            outline: none;
        }
        .announcement-content {
            max-width: 80%;
            margin: 0 auto;
        }