* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', sans-serif;
            background-color: #f9fafc;
            color: #1f2937;
            line-height: 1.5;
            scroll-behavior: smooth;
        }

        /* 自定义容器 */
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* 导航栏 */
        .navbar {
            background-color: rgba(255,255,255,0.96);
            backdrop-filter: blur(4px);
            box-shadow: 0 1px 3px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid #eaeef5;
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #2d3e6e, #4f6f9f);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .logo span {
            font-weight: 300;
            color: #4b6a9b;
            background: none;
            -webkit-background-clip: unset;
            background-clip: unset;
        }
        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
        }
        .nav-links a {
            text-decoration: none;
            font-weight: 500;
            color: #2c3e5c;
            transition: color 0.2s;
        }
        .nav-links a:hover {
            color: #3b6cb7;
        }
        .mobile-menu-btn {
            display: none;
            font-size: 1.6rem;
            background: none;
            border: none;
            cursor: pointer;
            color: #2c3e5c;
        }

        /* 按钮通用样式 */
        .btn-primary {
            display: inline-block;
            background-color: #2c3e5c;
            color: white;
            padding: 0.75rem 1.8rem;
            border-radius: 40px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        }
        .btn-primary:hover {
            background-color: #1f2e48;
            transform: translateY(-2px);
            box-shadow: 0 10px 20px -5px rgba(0,0,0,0.15);
        }
        .btn-outline {
            background: transparent;
            border: 1.5px solid #2c3e5c;
            color: #2c3e5c;
            padding: 0.7rem 1.8rem;
            border-radius: 40px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.2s;
        }
        .btn-outline:hover {
            background: #2c3e5c;
            color: white;
        }

        /* Hero 区 */
        .hero {
            padding: 80px 0 100px;
            background: linear-gradient(120deg, #f0f4fa 0%, #ffffff 70%);
        }
        .hero-grid {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 48px;
            flex-wrap: wrap;
        }
        .hero-content {
            flex: 1;
        }
        .hero-badge {
            background: #e6edf6;
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            color: #2c5f8a;
            display: inline-block;
            margin-bottom: 1.2rem;
        }
        .hero-content h1 {
            font-size: 3.3rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -1px;
            color: #0a1c2f;
            margin-bottom: 1.5rem;
        }
        .hero-content p {
            font-size: 1.2rem;
            color: #4a5b79;
            max-width: 550px;
            margin-bottom: 2rem;
        }
        .hero-buttons {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .hero-image {
            flex: 1;
            text-align: center;
        }
        .hero-image img {
            max-width: 100%;
            width: 420px;
            filter: drop-shadow(0 20px 25px -12px rgba(0,0,0,0.15));
        }

        /* 通用章节 */
        .section {
            padding: 90px 0;
        }
        .section-alt {
            background-color: #ffffff;
        }
        .section-title {
            text-align: center;
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #0f263b;
        }
        .section-sub {
            text-align: center;
            color: #5f6e87;
            max-width: 680px;
            margin: 0 auto 50px;
            font-size: 1.1rem;
        }

        /* 服务卡片 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
            gap: 32px;
            margin-top: 20px;
        }
        .service-card {
            background: white;
            border-radius: 28px;
            padding: 32px 24px;
            box-shadow: 0 15px 35px -12px rgba(0,0,0,0.05);
            transition: transform 0.25s, box-shadow 0.3s;
            border: 1px solid #f0f2f6;
            text-align: center;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 25px 40px -12px rgba(0,0,0,0.12);
            border-color: #dce5f0;
        }
        .service-icon {
            font-size: 2.8rem;
            color: #2c3e5c;
            margin-bottom: 20px;
        }
        .service-card h3 {
            font-size: 1.5rem;
            margin-bottom: 12px;
        }
        .service-card p {
            color: #5c6e8c;
            line-height: 1.5;
        }

        /* 团队介绍 */
        .team-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 40px;
            margin-top: 20px;
        }
        .team-member {
            background: #ffffff;
            border-radius: 32px;
            text-align: center;
            padding: 30px 20px 28px;
            transition: all 0.2s;
            box-shadow: 0 12px 28px -8px rgba(0,0,0,0.04);
            border: 1px solid #edf2f7;
        }
        .member-img {
            width: 130px;
            height: 130px;
            background: linear-gradient(145deg, #d9e2ef, #cbdae9);
            border-radius: 50%;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3.5rem;
            color: #2c3e5c;
            box-shadow: 0 8px 14px rgba(0,0,0,0.05);
        }
        .team-member h3 {
            font-size: 1.4rem;
            margin-bottom: 6px;
        }
        .team-role {
            color: #3b6cb7;
            font-weight: 600;
            margin-bottom: 12px;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
        }
        .team-bio {
            color: #5b6d8a;
            font-size: 0.9rem;
            margin-bottom: 18px;
        }
        .social-links a {
            color: #7e8ea8;
            margin: 0 8px;
            font-size: 1.1rem;
            transition: color 0.2s;
        }
        .social-links a:hover {
            color: #2c3e5c;
        }

        /* 作品展示区 简约卡片 */
        .portfolio-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }
        .portfolio-item {
            border-radius: 28px;
            overflow: hidden;
            background: #fff;
            box-shadow: 0 12px 28px -8px rgba(0,0,0,0.05);
            transition: transform 0.25s;
        }
        .portfolio-item:hover {
            transform: translateY(-5px);
        }
        .portfolio-img {
            height: 220px;
            background-color: #eaf0f8;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            color: #3f5e89;
        }
        .portfolio-info {
            padding: 22px 20px 26px;
        }
        .portfolio-info h4 {
            font-size: 1.25rem;
            margin-bottom: 6px;
        }
        .portfolio-info p {
            color: #6c7c9c;
            font-size: 0.9rem;
        }

        /* CTA区域 */
        .cta-section {
            background: linear-gradient(100deg, #1e2e46 0%, #17263b 100%);
            border-radius: 48px;
            margin: 20px 0 60px;
            padding: 58px 48px;
            text-align: center;
            color: white;
        }
        .cta-section h2 {
            font-size: 2rem;
            margin-bottom: 18px;
        }
        .cta-section p {
            opacity: 0.85;
            max-width: 520px;
            margin: 0 auto 30px;
        }
        .cta-section .btn-primary {
            background: white;
            color: #1e2e46;
            box-shadow: 0 5px 12px rgba(0,0,0,0.15);
        }
        .cta-section .btn-primary:hover {
            background: #f0f4fa;
            transform: scale(0.98);
        }

        /* 页脚 */
        footer {
            background: #0f1a28;
            color: #b9c7db;
            padding: 50px 0 30px;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            color: white;
            margin-bottom: 18px;
            font-size: 1.1rem;
        }
        .footer-col p, .footer-col a {
            color: #a3b3cf;
            text-decoration: none;
            line-height: 1.8;
            display: block;
            margin-bottom: 8px;
            font-size: 0.9rem;
        }
        .footer-col a:hover {
            color: white;
        }
        .footer-bottom {
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid #253449;
            font-size: 0.85rem;
        }
        .social-footer a {
            display: inline-block;
            margin-right: 20px;
            font-size: 1.2rem;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                background: white;
                padding: 20px 0;
                gap: 1rem;
                text-align: center;
            }
            .nav-links.active {
                display: flex;
            }
            .mobile-menu-btn {
                display: block;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .hero-grid {
                flex-direction: column;
                text-align: center;
            }
            .hero-buttons {
                justify-content: center;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .cta-section {
                padding: 40px 24px;
            }
        }

        /* 辅助样式 */
        .text-gradient {
            background: linear-gradient(125deg, #1f3a5f, #416391);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }