<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>页面未找到 - 河北星源新材料有限公司</title>
    <link rel="icon" type="image/png" href="/image/lucency/logo.png" />
    <link rel="stylesheet" href="/css/common.css">
    <link rel="stylesheet" href="/css/layout.css">
    <link href="https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap" rel="stylesheet">
    <style>
        body {
            margin: 0;
            padding: 0;
            min-height: 100vh;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            font-family: 'Noto Sans SC', sans-serif;
        }

        .error-container {
            text-align: center;
            padding: 40px;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            max-width: 500px;
            width: 90%;
            animation: fadeInUp 0.6s ease;
        }

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

        .error-code {
            font-size: 120px;
            font-weight: 700;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1;
            margin: 0;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
        }

        .error-icon {
            width: 100px;
            height: 100px;
            margin: 20px auto;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 50px;
            box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        .error-title {
            font-size: 24px;
            color: #2d3748;
            margin: 20px 0 10px;
            font-weight: 600;
        }

        .error-message {
            font-size: 16px;
            color: #718096;
            margin-bottom: 30px;
            line-height: 1.6;
        }

        .error-actions {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 25px;
            font-size: 15px;
            font-weight: 500;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
        }

        .btn-secondary {
            background: #f7fafc;
            color: #4a5568;
            border: 1px solid #e2e8f0;
        }

        .btn-secondary:hover {
            background: #edf2f7;
            border-color: #cbd5e0;
        }

        .btn svg {
            width: 18px;
            height: 18px;
        }

        .floating-shapes {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            overflow: hidden;
            z-index: -1;
        }

        .shape {
            position: absolute;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            animation: float 20s infinite;
        }

        .shape:nth-child(1) {
            width: 80px;
            height: 80px;
            top: 20%;
            left: 10%;
            animation-delay: 0s;
        }

        .shape:nth-child(2) {
            width: 120px;
            height: 120px;
            top: 60%;
            right: 15%;
            animation-delay: -5s;
        }

        .shape:nth-child(3) {
            width: 60px;
            height: 60px;
            bottom: 20%;
            left: 20%;
            animation-delay: -10s;
        }

        .shape:nth-child(4) {
            width: 100px;
            height: 100px;
            top: 30%;
            right: 25%;
            animation-delay: -15s;
        }

        @keyframes float {
            0%, 100% {
                transform: translateY(0) rotate(0deg);
            }
            50% {
                transform: translateY(-20px) rotate(180deg);
            }
        }

        /* 响应式 */
        @media (max-width: 480px) {
            .error-code {
                font-size: 80px;
            }

            .error-container {
                padding: 30px 20px;
            }

            .error-title {
                font-size: 20px;
            }

            .error-actions {
                flex-direction: column;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }
        }
    </style>
</head>
<body>
    <!-- 背景装饰 -->
    <div class="floating-shapes">
        <div class="shape"></div>
        <div class="shape"></div>
        <div class="shape"></div>
        <div class="shape"></div>
    </div>

    <div class="error-container">
        <p class="error-code">404</p>
        <div class="error-icon">🔍</div>
        <h1 class="error-title">页面未找到</h1>
        <p class="error-message">
            抱歉，您访问的页面不存在或已被移除。<br>
            请检查网址是否正确，或返回首页继续浏览。
        </p>
        <div class="error-actions">
            <a href="/" class="btn btn-primary">
                <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                    <path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"></path>
                    <polyline points="9 22 9 12 15 12 15 22"></polyline>
                </svg>
                返回首页
            </a>
            <button onclick="history.back()" class="btn btn-secondary">
                <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                    <line x1="19" y1="12" x2="5" y2="12"></line>
                    <polyline points="12 19 5 12 12 5"></polyline>
                </svg>
                返回上页
            </button>
        </div>
    </div>
</body>
</html>
