/* ====== 404页面独享样式 ====== */
    body {
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }

    .error-hero {
        position: relative;
        padding: 180px 0 120px;
        background: linear-gradient(135deg, rgba(247, 250, 252, 0.95) 0%, rgba(237, 242, 247, 0.9) 100%), url('https://images.unsplash.com/photo-1553877522-43269d4ea984?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80');
        background-size: cover;
        background-position: center;
        overflow: hidden;
        display: flex;
        align-items: center;
        min-height: 100vh;
    }

    .error-hero:before {
        content: '';
        position: absolute;
        top: 0;
        right: 0;
        width: 50%;
        height: 100%;
        background: linear-gradient(90deg, transparent 0%, rgba(247, 250, 252, 0.9) 100%);
        z-index: 1;
    }

    .error-content {
        max-width: 700px;
        position: relative;
        z-index: 2;
        margin: 0 auto;
        text-align: center;
        width: 100%;
    }

    /* 404数字样式 */
    .error-number {
        font-size: 15rem;
        font-weight: 900;
        line-height: 1;
        margin-bottom: 20px;
        background: var(--gradient-primary);
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
        position: relative;
        display: inline-block;
        text-shadow: 0 10px 30px rgba(26, 54, 93, 0.15);
        animation: float 6s ease-in-out infinite;
    }

    .error-number:after {
        content: '';
        position: absolute;
        bottom: 10px;
        left: 50%;
        transform: translateX(-50%);
        width: 200px;
        height: 10px;
        background: var(--gradient-accent);
        border-radius: 5px;
        filter: blur(10px);
        opacity: 0.5;
        z-index: -1;
    }

    .error-title {
        font-size: 2.8rem;
        margin-bottom: 25px;
        color: var(--dark-color);
        line-height: 1.1;
    }

    .error-description {
        font-size: 1.3rem;
        margin-bottom: 40px;
        color: var(--gray-color);
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }

    .error-actions {
        display: flex;
        gap: 20px;
        margin-top: 40px;
        flex-wrap: wrap;
        justify-content: center;
    }

    /* 搜索框样式 */
    .error-search {
        max-width: 500px;
        margin: 60px auto 0;
        position: relative;
    }

    .error-search input {
        width: 100%;
        padding: 18px 25px;
        border-radius: 12px;
        border: 2px solid var(--light-gray);
        font-size: 1.1rem;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
        transition: var(--transition);
        background: white;
    }

    .error-search input:focus {
        outline: none;
        border-color: var(--secondary-color);
        box-shadow: 0 5px 25px rgba(43, 108, 176, 0.15);
    }

    .error-search button {
        position: absolute;
        right: 10px;
        top: 50%;
        transform: translateY(-50%);
        background: var(--gradient-primary);
        color: white;
        border: none;
        border-radius: 8px;
        padding: 12px 25px;
        font-weight: 600;
        cursor: pointer;
        transition: var(--transition);
    }

    .error-search button:hover {
        background: var(--gradient-secondary);
        transform: translateY(-50%) scale(1.05);
    }

    /* 快速链接 */
    .quick-links {
        margin-top: 80px;
        padding-top: 60px;
        border-top: 1px solid var(--light-gray);
    }

    .quick-links h3 {
        text-align: center;
        margin-bottom: 40px;
        font-size: 1.8rem;
        color: var(--dark-color);
    }

    .links-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 25px;
        max-width: 900px;
        margin: 0 auto;
    }

    .link-card {
        background: white;
        border-radius: var(--border-radius);
        padding: 30px 25px;
        box-shadow: var(--box-shadow);
        transition: var(--transition);
        border: 1px solid var(--light-gray);
        text-align: center;
    }

    .link-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
        border-color: rgba(43, 108, 176, 0.2);
    }

    .link-icon {
        width: 60px;
        height: 60px;
        background: rgba(43, 108, 176, 0.1);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 20px;
        font-size: 1.5rem;
        color: var(--secondary-color);
        transition: var(--transition);
    }

    .link-card:hover .link-icon {
        background: var(--gradient-primary);
        color: white;
        transform: scale(1.1);
    }

    .link-card h4 {
        font-size: 1.2rem;
        margin-bottom: 10px;
        color: var(--dark-color);
    }

    .link-card p {
        font-size: 0.95rem;
        color: var(--gray-color);
        margin-bottom: 20px;
    }

    /* ====== 动画效果 ====== */
    @keyframes float {
        0%, 100% {
            transform: translateY(0);
        }
        50% {
            transform: translateY(-20px);
        }
    }

    @keyframes pulse {
        0%, 100% {
            opacity: 1;
        }
        50% {
            opacity: 0.7;
        }
    }

    .pulse-animation {
        animation: pulse 2s ease-in-out infinite;
    }

    /* ====== 响应式调整 ====== */
    @media (max-width: 1200px) {
        .links-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        
        .error-number {
            font-size: 12rem;
        }
        
        .error-title {
            font-size: 2.3rem;
        }
    }

    @media (max-width: 992px) {
        .error-hero {
            padding: 150px 0 100px;
        }
        
        .error-number {
            font-size: 10rem;
        }
        
        .error-title {
            font-size: 2rem;
        }
        
        .error-description {
            font-size: 1.2rem;
        }
        
        .error-actions {
            flex-direction: column;
            align-items: center;
        }
        
        .error-actions .btn {
            width: 100%;
            max-width: 300px;
            text-align: center;
        }
    }

    @media (max-width: 768px) {
        .links-grid {
            grid-template-columns: 1fr;
        }
        
        .error-number {
            font-size: 8rem;
        }
        
        .error-title {
            font-size: 1.8rem;
        }
        
        .error-description {
            font-size: 1.1rem;
        }
        
        .link-card {
            padding: 25px 20px;
        }
    }

    @media (max-width: 480px) {
        .error-number {
            font-size: 6rem;
        }
        
        .error-title {
            font-size: 1.6rem;
        }
        
        .error-description {
            font-size: 1rem;
        }
        
        .error-search input {
            padding: 15px 20px;
            font-size: 1rem;
        }
    }