/* 下载页面样式 */
.download-hero {
    padding: 6rem 0 4rem;
    text-align: center;
}

.download-hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.download-hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.version-badge {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    padding: 0.75rem 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.badge {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge.latest {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: white;
}

.version {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.release-date {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* 平台选择区域 */
.platforms-section {
    padding: 4rem 0;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.platform-card {
    padding: 2rem;
    transition: var(--transition-normal);
}

.platform-card:hover {
    transform: translateY(-8px);
}

.platform-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.platform-icon {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.platform-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.platform-badges {
    display: flex;
    gap: 0.5rem;
}

.platform-details {
    margin: 1.5rem 0;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.detail-item:last-child {
    border-bottom: none;
}

.detail-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.detail-value {
    font-weight: 600;
    text-align: right;
    max-width: 60%;
    font-size: 0.875rem;
}

.platform-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.platform-actions .glass-btn {
    flex: 1;
    white-space: nowrap;
}

/* 加载占位符 */
.loading-placeholder {
    padding: 3rem;
    text-align: center;
    grid-column: 1 / -1;
}

.loading-placeholder i {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1rem;
    display: block;
}

/* 系统要求 */
.platform-requirements {
    margin-top: 4rem;
}

.requirements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.requirement-card {
    padding: 1.5rem;
    text-align: center;
}

.requirement-icon {
    width: 3rem;
    height: 3rem;
    margin: 0 auto 1rem;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary);
}

.requirement-card h4 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.requirement-card ul {
    list-style: none;
    text-align: left;
}

.requirement-card li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.requirement-card li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

/* 安装指南 */
.installation-guide {
    padding: 4rem 0;
    background: rgba(255, 255, 255, 0.05);
}

.guide-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.step-card {
    padding: 2rem;
    text-align: center;
    position: relative;
}

.step-number {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin: 0 auto 1.5rem;
}

.step-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.step-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* FAQ区域 */
.faq-section {
    padding: 4rem 0;
}

.faq-grid {
    max-width: 800px;
    margin: 3rem auto 0;
}

.faq-item {
    margin-bottom: 1rem;
    overflow: hidden;
}

.faq-question {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: var(--transition-fast);
}

.faq-question:hover {
    background: rgba(99, 102, 241, 0.05);
}

.faq-question h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

.faq-question i {
    transition: transform 0.3s ease;
    color: var(--text-secondary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    padding: 0 1.5rem;
    transition: max-height 0.3s ease;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
    padding-bottom: 1.5rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .download-hero h1 {
        font-size: 2.5rem;
    }

    .version-badge {
        flex-direction: column;
        gap: 0.5rem;
    }

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

    .guide-steps {
        grid-template-columns: 1fr;
    }

    .faq-question h3 {
        font-size: 1rem;
    }
}