/* ===== 404内容区域 ===== */
        .error-content {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #e0f2fe 0%, #f0fdf4 100%);
            padding: 120px 0 80px;
            position: relative;
            overflow: hidden;
        }
        
        .error-content::before {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 300px;
            height: 100%;
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 200" fill="%2310b981" opacity="0.05"><path d="M50,10 C60,10 70,30 70,60 C70,90 60,110 50,110 C40,110 30,90 30,60 C30,30 40,10 50,10 Z M45,110 L45,190 L55,190 L55,110 Z"/></svg>');
            background-repeat: no-repeat;
            background-position: left bottom;
            background-size: 300px 100%;
            z-index: 0;
        }
        
        .error-content::after {
            content: '';
            position: absolute;
            bottom: 0;
            right: 0;
            width: 300px;
            height: 100%;
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 200" fill="%232563eb" opacity="0.05"><path d="M50,10 C60,10 70,30 70,60 C70,90 60,110 50,110 C40,110 30,90 30,60 C30,30 40,10 50,10 Z M45,110 L45,190 L55,190 L55,110 Z"/></svg>');
            background-repeat: no-repeat;
            background-position: right bottom;
            background-size: 300px 100%;
            z-index: 0;
        }
        
        .error-container {
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
            padding: 0 15px;
            position: relative;
            z-index: 1;
        }
        
        .error-number {
            font-size: 12rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 20px;
            line-height: 1;
            text-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
            animation: numberPulse 3s ease-in-out infinite;
        }
        
        @keyframes numberPulse {
            0% { 
                transform: scale(1); 
                text-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
            }
            50% { 
                transform: scale(1.05); 
                text-shadow: 0 15px 40px rgba(37, 99, 235, 0.5);
            }
            100% { 
                transform: scale(1); 
                text-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
            }
        }
        
        .error-title {
            font-size: 3rem;
            margin-bottom: 20px;
            color: var(--dark-color);
        }
        
        .error-description {
            font-size: 1.3rem;
            color: var(--text-light);
            margin-bottom: 40px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .error-actions {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 50px;
        }
        
        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--primary-color);
            padding: 14px 32px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            transition: var(--transition);
            border: 2px solid var(--primary-color);
        }
        
        .btn-outline:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
        }
        
        .error-search {
            max-width: 500px;
            margin: 0 auto;
            position: relative;
        }
        
        .search-input {
            width: 100%;
            padding: 16px 20px;
            border: 2px solid var(--light-color);
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        
        .search-input:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 10px 20px rgba(37, 99, 235, 0.1);
        }
        
        .search-button {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--primary-color);
            color: white;
            border: none;
            border-radius: 6px;
            padding: 10px 16px;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .search-button:hover {
            background: #1d4ed8;
        }
        
        /* 几何装饰元素 */
        .error-shapes {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            overflow: hidden;
            z-index: 0;
        }
        
        .error-shape {
            position: absolute;
            opacity: 0.1;
            animation: float 15s infinite linear;
        }
        
        .error-shape-1 {
            width: 150px;
            height: 150px;
            background: var(--primary-color);
            top: 15%;
            left: 10%;
            border-radius: 50%;
        }
        
        .error-shape-2 {
            width: 100px;
            height: 100px;
            background: var(--secondary-color);
            bottom: 20%;
            right: 10%;
            border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
            animation-delay: 5s;
        }
        
        .error-shape-3 {
            width: 120px;
            height: 120px;
            background: var(--accent-color);
            top: 40%;
            left: 80%;
            border-radius: 50%;
            animation-delay: 10s;
        }
        
        @keyframes float {
            0% { transform: translate(0, 0) rotate(0deg); }
            33% { transform: translate(30px, 50px) rotate(120deg); }
            66% { transform: translate(-20px, 80px) rotate(240deg); }
            100% { transform: translate(0, 0) rotate(360deg); }
        }
        
        /* ===== 独享部分响应式调整 ===== */
        @media (max-width: 992px) {
            .error-number {
                font-size: 8rem;
            }
            
            .error-title {
                font-size: 2.5rem;
            }
            
            .error-description {
                font-size: 1.1rem;
            }
            
            .error-actions {
                flex-direction: column;
                align-items: center;
            }
            
            .btn, .btn-outline {
                width: 100%;
                max-width: 300px;
            }
            
            /* 移动端隐藏背景图案 */
            .error-content::before,
            .error-content::after {
                display: none;
            }
            
            .error-shape {
                display: none;
            }
        }
        
        @media (max-width: 576px) {
            .error-number {
                font-size: 6rem;
            }
            
            .error-title {
                font-size: 2rem;
            }
        }