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

        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            color: #333;
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
        }

        /* 导航栏 - 苹果风格 */
        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 8%;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }

        .logo {
            font-size: 24px;
            font-weight: 700;
            color: #000;
            letter-spacing: -0.5px;
                        text-decoration: none;

        }

        .logo span {
            color: #0071e3;
        }

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

        .nav-links li {
            margin: 0 20px;
        }

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

        .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%;
        }

        /* 英雄区域 */
        .hero {
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 0 5%;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('https://images.unsplash.com/photo-1542273917363-3b1817f69a2d?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1470&q=80') no-repeat center center/cover;
            opacity: 0.1;
            z-index: -1;
        }

        .hero h1 {
            font-size: 5rem;
            font-weight: 700;
            margin-bottom: 20px;
            background: linear-gradient(90deg, #000, #0071e3);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -1px;
        }

        .hero .title {
            font-size: 1.8rem;
            color: #666;
            margin-bottom: 40px;
            max-width: 800px;
        }

        .slogan {
            font-size: 1.5rem;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.7);
            padding: 20px 40px;
            border-radius: 50px;
            margin: 40px 0;
            max-width: 800px;
            line-height: 1.8;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            backdrop-filter: blur(5px);
        }

        /* 功能入口区域 */
        .features {
            padding: 100px 8%;
            background: #fff;
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: 60px;
            font-weight: 700;
            color: #000;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .feature-card {
            background: #f9f9f9;
            border-radius: 20px;
            padding: 40px 30px;
            text-align: center;
            transition: transform 0.3s, box-shadow 0.3s;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }

        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 113, 227, 0.1);
        }

        .feature-icon {
            font-size: 3rem;
            margin-bottom: 20px;
            color: #0071e3;
        }

        .feature-title {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: #000;
        }

        .feature-desc {
            color: #666;
            margin-bottom: 20px;
        }

        .btn {
            display: inline-block;
            padding: 12px 30px;
            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);
        }

        /* 关于我区域 */
        .about {
            padding: 100px 8%;
            background: #f5f7fa;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
        }

        .about-content {
            flex: 1;
            min-width: 300px;
            padding-right: 40px;
        }

        .about h2 {
            font-size: 2.5rem;
            margin-bottom: 30px;
            color: #000;
        }

        .about p {
            margin-bottom: 20px;
            color: #555;
            font-size: 1.1rem;
            line-height: 1.8;
        }

        .about-image {
            flex: 1;
            min-width: 300px;
            height: 500px;
            background: linear-gradient(45deg, #0071e3, #00c6ff);
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0, 113, 227, 0.15);
            display: flex;
            justify-content: center;
            align-items: center;
            color: white;
            font-size: 2rem;
            font-weight: 700;
            text-align: center;
            padding: 20px;
        }

        /* 页脚 */
        .footer {
            background: #000;
            color: #fff;
            padding: 60px 8% 30px;
        }

        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            margin-bottom: 50px;
        }

        .footer-column {
            flex: 1;
            min-width: 200px;
            margin-bottom: 30px;
        }

        .footer-column h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: #fff;
        }

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

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

        .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: 20px;
        }

        .social-icons a {
            display: inline-flex;
            justify-content: center;
            align-items: center;
            width: 40px;
            height: 40px;
            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: 30px;
            border-top: 1px solid #333;
            color: #777;
            font-size: 0.9rem;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .navbar {
                padding: 15px 5%;
            }

            .nav-links {
                display: none;
            }

            .hero h1 {
                font-size: 3.5rem;
            }

            .hero .title {
                font-size: 1.5rem;
            }

            .slogan {
                font-size: 1.2rem;
                padding: 15px 25px;
            }

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

            .about-content {
                padding-right: 0;
                margin-bottom: 40px;
            }
        }

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

            50% {
                transform: translateY(-15px);
            }

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

        .floating {
            animation: float 3s ease-in-out infinite;
        }

        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease-out, transform 0.6s ease-out;
        }

        .fade-in.appear {
            opacity: 1;
            transform: translateY(0);
        }