/* 404内容区域 */
        .error-section {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 100px 0;
            background: var(--light-bg);
            position: relative;
            overflow: hidden;
        }

        .error-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 300px;
            height: 300px;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" fill="%23c9a96e" opacity="0.05"><polygon points="50,0 100,50 50,100 0,50"/></svg>');
            background-size: contain;
        }

        .error-content {
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .error-code {
            font-size: 10rem;
            font-weight: 800;
            color: var(--deep-navy);
            line-height: 1;
            margin-bottom: 20px;
            position: relative;
            display: inline-block;
            opacity: 0;
            animation: fadeInUp 1s forwards;
        }

        .error-code::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 250px;
            height: 250px;
            background: radial-gradient(circle, rgba(201, 169, 110, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            z-index: -1;
        }

        .error-title {
            font-size: 2.5rem;
            color: var(--deep-navy);
            margin-bottom: 25px;
            opacity: 0;
            animation: fadeInUp 1s 0.3s forwards;
        }

        .error-description {
            font-size: 1.2rem;
            color: var(--text-light);
            margin-bottom: 40px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            opacity: 0;
            animation: fadeInUp 1s 0.6s forwards;
        }

        .error-actions {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 50px;
            opacity: 0;
            animation: fadeInUp 1s 0.9s forwards;
        }

        .search-box {
            max-width: 500px;
            margin: 0 auto 50px;
            position: relative;
            opacity: 0;
            animation: fadeInUp 1s 1.2s forwards;
        }

        .search-box input {
            width: 100%;
            padding: 16px 60px 16px 25px;
            border: 2px solid rgba(10, 26, 53, 0.1);
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
            background: var(--white);
        }

        .search-box input:focus {
            outline: none;
            border-color: var(--gold);
            box-shadow: 0 0 0 3px rgba(201, 169, 110, 0.2);
        }

        .search-box button {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--gold);
            color: var(--deep-navy);
            border: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .search-box button:hover {
            background: var(--dark-gold);
            color: white;
        }

        .popular-links {
            opacity: 0;
            animation: fadeInUp 1s 1.5s forwards;
        }

        .popular-links h3 {
            font-size: 1.3rem;
            margin-bottom: 20px;
            color: var(--deep-navy);
        }

        .links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 15px;
            max-width: 600px;
            margin: 0 auto;
        }

        .links-grid a {
            padding: 12px 20px;
            background: var(--white);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
            color: var(--text-dark);
            text-align: center;
            font-weight: 500;
        }

        .links-grid a:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            color: var(--gold);
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

      
        /* 响应式设计 */
        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
            
            .navbar .container {
                padding: 0 20px;
            }
            
            .nav-menu {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 70px);
                background: var(--deep-navy);
                flex-direction: column;
                align-items: center;
                justify-content: flex-start;
                padding-top: 50px;
                transition: var(--transition);
                z-index: 999;
            }
            
            .nav-menu.active {
                left: 0;
            }
            
            .nav-menu li {
                margin: 20px 0;
            }
            
            .hamburger {
                display: block;
            }
            
            .nav-cta {
                display: none;
            }
            
            .error-code {
                font-size: 7rem;
            }
            
            .error-title {
                font-size: 2rem;
            }
            
            .error-description {
                font-size: 1rem;
            }
            
            .error-actions {
                flex-direction: column;
                align-items: center;
            }
            
            .links-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 576px) {
            .error-code {
                font-size: 5rem;
            }
            
            .error-title {
                font-size: 1.6rem;
            }
            
            .error-description {
                font-size: 0.95rem;
            }
        }