main {
    padding: 3rem 0;
}

.grids {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, auto));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

@media (max-width: 768px) {
    .grids {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

.grid-card {
    background-color: var(--bg-card);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 6px 16px var(--shadow-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
    border-top: 4px solid var(--primary);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

@media (max-width: 768px) {
    .grid-card {
        padding: 20px;
    }
}

.grid-header {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.grid-icon {
    width: 60px;
    height: 60px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1.2rem;
    font-size: 1.8rem;
    color: white;
}

.windows .grid-icon {
    background-color: #0078d7;
}

.mac .grid-icon {
    background-color: #444444;
}

.linux .grid-icon {
    background-color: #f1502f;
}

.termux .grid-icon {
    background-color: #000000;
}

.docker .grid-icon {
    background-color: #000000;
}

.grid-header h3 {
    font-size: 1.6rem;
}

.grid-details {
    margin-bottom: 2rem;
    flex-grow: 1;
}

.grid-details p {
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
}

.download-btn {
    display: block;
    padding: 0.5rem 1rem 0.5rem;
    background-color: var(--primary);
    color: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
    text-align: center;
    text-decoration: none;
}

.download-btn:hover {
    border: 1px solid;
}

.download-btn i {
    margin-right: 0.5rem;
}

.download-large-btn {
    display: block;
    width: 100%;
    padding: 1rem;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
    text-align: center;
    text-decoration: none;
}

.download-large-btn:hover {
    background-color: var(--primary-dark);
}

.download-large-btn i {
    margin-right: 0.5rem;
}

/* 安装指南 */
.instructions {
    background-color: var(--bg-card);
    border-radius: 12px;
    padding: 2rem;
    margin-top: 3rem;
    box-shadow: 0 6px 16px var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.instructions h2 {
    margin-bottom: 1.5rem;
    color: var(--text);
}

.steps {
    display: block;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.step {
    flex: 1;
    min-width: 250px;
    padding: 1.5rem;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    border-left: 4px solid var(--primary);
    transition: all 0.3s ease;
}

.step-number {
    display: inline-block;
    width: 32px;
    height: 32px;
    background-color: var(--primary);
    color: white;
    border-radius: 50%;
    text-align: center;
    line-height: 32px;
    margin-bottom: 1rem;
    font-weight: bold;
}