* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
        }

        body {
            background: #fafafa;
            color: #333;
            line-height: 1.6;
            overflow-x: hidden;
        }
   /* 下拉菜单样式 */
        .dropdown {
            position: relative;
            display: inline-block;
        }

        .dropdown-content {
            display: none;
            position: absolute;
            background-color: #f9f9f9;
            min-width: 160px;
            box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
            z-index: 1;
            border-radius: 4px;
            overflow: hidden;
        }

        .dropdown-content a {
            color: black;
            padding: 12px 16px;
            text-decoration: none;
            display: block;
            transition: background-color 0.3s;
        }

        .dropdown-content a:hover {
            background-color: #f1f1f1;
        }

        .dropdown:hover .dropdown-content {
            display: block;
        }

        /* 确保导航栏链接样式一致 */
        .nav-links li {
            position: relative;
        }

        .nav-links li a {
            display: block;
            padding: 10px 15px;
            text-decoration: none;
        }


        .wechat-trigger {
            position: relative;
        }

        .wechat-qr {
            position: absolute;
            top: 100%;
            left: 0;
            width: 120px;
            height: 120px;
            border-radius: 6px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, .15);
            opacity: 0;
            visibility: hidden;
            transform: translateY(6px);
            transition: all .25s ease;
            z-index: 1000;
        }

        .wechat-trigger:hover .wechat-qr {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        /* 导航栏 */
        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 8%;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            border-bottom: 1px solid #eee;
        }

        .logo {
            font-size: 24px;
            font-weight: 700;
            color: #000;
            letter-spacing: -0.5px;
        }

        .logo span {
            color: #0071e3;
        }

        .nav-links {
            display: flex;
            list-style: none;
        }

        .nav-links li {
            margin: 0 15px;
        }

        .nav-links a {
            text-decoration: none;
            color: #333;
            font-weight: 500;
            font-size: 16px;
            transition: color 0.3s;
            position: relative;
        }

        .nav-links a.active {
            color: #0071e3;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 100%;
            height: 2px;
            background: #0071e3;
        }

        .nav-links a:hover {
            color: #0071e3;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: #0071e3;
            transition: width 0.3s;
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        /* 项目头部 */
        .project-hero {
            padding: 100px 8% 60px;
            text-align: center;
            background: linear-gradient(135deg, #f5f7fa 0%, #e6e9ff 100%);
            position: relative;
            overflow: hidden;
        }

        .project-hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('https://images.unsplash.com/photo-1454165804606-c3d57bc86b40?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1470&q=80') no-repeat center center/cover;
            opacity: 0.05;
            z-index: 0;
        }

        .project-category {
            display: inline-block;
            padding: 8px 20px;
            background: rgba(0, 113, 227, 0.1);
            color: #0071e3;
            border-radius: 20px;
            font-size: 0.9rem;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }

        .project-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 20px;
            background: linear-gradient(90deg, #000, #0071e3);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            position: relative;
            z-index: 1;
        }

        .project-tagline {
            font-size: 1.6rem;
            color: #666;
            max-width: 700px;
            margin: 0 auto 40px;
            position: relative;
            z-index: 1;
        }

        .project-meta {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 30px;
            position: relative;
            z-index: 1;
        }

        .meta-item {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .meta-label {
            color: #777;
            font-size: 0.9rem;
            margin-bottom: 8px;
        }

        .meta-value {
            font-weight: 600;
            color: #333;
        }

        /* 项目展示区域 */
        .project-showcase {
            max-width: 1400px;
            margin: 80px auto;
            padding: 0 5%;
        }

        .showcase-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: start;
        }

        .project-gallery {
            position: sticky;
            top: 100px;
        }

        .main-image {
            width: 100%;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            margin-bottom: 20px;
            background: white;
            aspect-ratio: 16/9;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
            font-weight: 600;
        }

        .thumbnail-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 15px;
        }

        .thumbnail {
            border-radius: 12px;
            overflow: hidden;
            cursor: pointer;
            transition: all 0.3s;
            aspect-ratio: 4/3;
            background: #f0f0f0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #999;
            font-size: 0.9rem;
        }

        .thumbnail:hover {
            transform: scale(1.05);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }

        .thumbnail.active {
            border: 3px solid #0071e3;
        }

        .project-info {
            padding: 30px 0;
        }

        .section-title {
            font-size: 2rem;
            margin-bottom: 30px;
            color: #000;
            padding-bottom: 15px;
            border-bottom: 1px solid #eee;
        }

        .project-description {
            font-size: 1.1rem;
            line-height: 1.8;
            color: #555;
            margin-bottom: 40px;
        }

        .feature-list {
            margin-bottom: 40px;
        }

        .feature-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 25px;
        }

        .feature-icon {
            width: 50px;
            height: 50px;
            border-radius: 15px;
            background: #f0f7ff;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0071e3;
            font-size: 1.2rem;
            margin-right: 20px;
            flex-shrink: 0;
        }

        .feature-content h4 {
            font-size: 1.3rem;
            margin-bottom: 10px;
            color: #000;
        }

        .feature-content p {
            color: #666;
            line-height: 1.6;
        }

        .tech-stack {
            margin-bottom: 40px;
        }

        .tech-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
        }

        .tech-item {
            background: #f8f9ff;
            padding: 15px;
            border-radius: 15px;
            display: flex;
            align-items: center;
        }

        .tech-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: #e6f0ff;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0071e3;
            margin-right: 15px;
            flex-shrink: 0;
        }

        .project-links {
            display: flex;
            gap: 15px;
            margin-top: 30px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 15px 35px;
            background: #0071e3;
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 500;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
            font-size: 1rem;
        }

        .btn:hover {
            background: #0056b3;
            transform: scale(1.05);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid #0071e3;
            color: #0071e3;
        }

        .btn-outline:hover {
            background: #0071e3;
            color: white;
        }

        /* 项目截图区域 */
        .screenshots-section {
            max-width: 1400px;
            margin: 100px auto;
            padding: 0 5%;
        }

        .screenshots-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .screenshot-item {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
            transition: all 0.3s;
            background: #f0f0f0;
            aspect-ratio: 16/9;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #999;
        }

        .screenshot-item:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 113, 227, 0.15);
        }

        /* 项目导航 */
        .project-navigation {
            max-width: 1400px;
            margin: 100px auto;
            padding: 0 5%;
            display: flex;
            justify-content: space-between;
        }

        .nav-project {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 30px;
            background: #fff;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            transition: all 0.3s;
            text-decoration: none;
            color: #333;
            width: 45%;
        }

        .nav-project:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0, 113, 227, 0.1);
        }

        .nav-icon {
            width: 60px;
            height: 60px;
            border-radius: 15px;
            background: #f0f7ff;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0071e3;
            font-size: 1.5rem;
            flex-shrink: 0;
        }

        .nav-content {
            flex: 1;
        }

        .nav-label {
            color: #777;
            font-size: 0.9rem;
            margin-bottom: 5px;
        }

        .nav-title {
            font-size: 1.3rem;
            font-weight: 600;
            color: #000;
        }

        /* 页脚 */
        .footer {
            background: #000;
            color: #fff;
            padding: 100px 8% 50px;
            margin-top: 100px;
        }

        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            margin-bottom: 70px;
        }

        .footer-column {
            flex: 1;
            min-width: 250px;
            margin-bottom: 40px;
        }

        .footer-column h3 {
            font-size: 1.5rem;
            margin-bottom: 25px;
            color: #fff;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 15px;
        }

        .footer-links a {
            color: #aaa;
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-links a:hover {
            color: #0071e3;
        }

        .social-icons {
            display: flex;
            gap: 15px;
            margin-top: 25px;
        }

        .social-icons a {
            display: inline-flex;
            justify-content: center;
            align-items: center;
            width: 45px;
            height: 45px;
            background: #222;
            border-radius: 50%;
            color: #fff;
            transition: all 0.3s;
        }

        .social-icons a:hover {
            background: #0071e3;
            transform: translateY(-5px);
        }

        .copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid #333;
            color: #777;
            font-size: 0.95rem;
        }

        /* 响应式设计 */
        @media (max-width: 992px) {
            .showcase-container {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .project-gallery {
                position: relative;
                top: 0;
            }

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

        @media (max-width: 768px) {
            .navbar {
                padding: 15px 5%;
            }

            .nav-links {
                display: none;
            }

            .project-title {
                font-size: 2.5rem;
            }

            .project-tagline {
                font-size: 1.3rem;
            }

            .project-meta {
                flex-direction: column;
                gap: 20px;
            }

            .thumbnail-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .project-navigation {
                flex-direction: column;
                gap: 20px;
            }

            .nav-project {
                width: 100%;
            }
        }

        /* 动画效果 */
        @keyframes float {
            0% {
                transform: translateY(0px);
            }

            50% {
                transform: translateY(-10px);
            }

            100% {
                transform: translateY(0px);
            }
        }

        .floating {
            animation: float 5s ease-in-out infinite;
        }

        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease-out, transform 0.8s ease-out;
        }

        .fade-in.appear {
            opacity: 1;
            transform: translateY(0);
        }
/* 全屏遮罩层 */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    transition: opacity .3s;
    pointer-events: none;
}
.lightbox img {
    max-width: 90%;
    max-height: 90%;
    border-radius: 6px;
    cursor: zoom-out;
}
.lightbox.show {
    opacity: 1;
    pointer-events: auto;
}
        /* 弹窗样式 */
        .modal {
            display: none;
            position: fixed;
            z-index: 1000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(5px);
            animation: fadeIn 0.3s ease;
        }

        .modal.show {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .modal-content {
            background: white;
            padding: 40px;
            border-radius: 20px;
            text-align: center;
            max-width: 400px;
            width: 90%;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            animation: slideIn 0.3s ease;
            position: relative;
        }

        .modal-icon {
            font-size: 48px;
            color: #667eea;
            margin-bottom: 20px;
        }

        .modal-content h3 {
            color: #333;
            margin-bottom: 15px;
            font-size: 24px;
        }

        .modal-content p {
            color: #666;
            margin-bottom: 25px;
            font-size: 16px;
        }

        .close-btn {
            position: absolute;
            top: 15px;
            right: 20px;
            font-size: 28px;
            cursor: pointer;
            color: #999;
            transition: color 0.3s ease;
        }

        .close-btn:hover {
            color: #333;
        }

        .modal-close-btn {
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: 25px;
            font-size: 16px;
            cursor: pointer;
            transition: transform 0.3s ease;
        }

        .modal-close-btn:hover {
            transform: translateY(-2px);
        }

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

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