.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 16px;
    width: min(96%, 1200px);
    margin: 16px auto;
}

.tool-card {
    background: linear-gradient(135deg, #ffffff, #f8f9fa);
    border-radius: var(--border-radius);
    padding: 30px 20px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--gray-200);
    cursor: pointer;
    position: relative;
    box-shadow: var(--box-shadow);
}

.tool-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--box-shadow-lg);
    border-color: var(--primary-color);
}

.tool-card a {
    text-decoration: none;
    color: inherit;
    display: block;
}

.tool-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    position: relative;
    left: 0;
    top: 0;
    opacity: 0.8;
    transition: var(--transition);
}

.tool-card:hover .tool-icon {
    transform: scale(1.1);
    opacity: 1;
}

.tool-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-top: 0;
}

.tool-description {
    color: var(--gray-700);
    font-size: 0.9rem;
    margin-bottom: 15px;
    min-height: 60px;
}

.tool-button {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    box-shadow: var(--box-shadow);
}

.tool-button:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
}

ul {
    padding-left: 20px;
}

ul li {
    line-height: 2.3;
}

a {
    color: var(--primary-color);
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
    text-decoration: none;
}

button {
    font-size: 1rem;
    line-height: 1.5;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--border-radius);
    padding: 10px 20px;
    color: white;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    box-shadow: var(--box-shadow);
}

button:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
}

@media screen and (max-width: 480px) {
    .tools-grid {
        grid-template-columns: 1fr;
    }

    .tool-card {
        padding: 20px 15px;
    }

    .tool-icon {
        font-size: 2.5rem;
    }
}