/* 关于：玻璃条 */
.glass-block {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 28px 32px;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    color: var(--text-muted);
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

/* 服务网格 */
.service-box {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.service-item,
.ai-card,
.data-item {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 26px 22px;
    text-align: center;
    transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
    backdrop-filter: blur(8px);
    box-shadow: 0 6px 24px rgba(2, 12, 27, 0.45);
}

.service-item:hover,
.ai-card:hover,
.data-item:hover {
    border-color: rgba(100, 255, 218, 0.35);
    transform: translateY(-4px);
    box-shadow: 0 12px 36px rgba(2, 12, 27, 0.6), 0 0 20px var(--accent-dim);
}

.service-item h3,
.data-item h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--accent);
}

.service-item p,
.data-item p {
    color: var(--text-muted);
    font-size: 0.92rem;
}

/* AI 区 */
.ai {
    background: rgba(13, 27, 42, 0.4);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.ai-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.ai-card h3 {
    color: var(--accent);
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.ai-card p {
    color: var(--text-muted);
    font-size: 0.92rem;
}

/* 数据 */
.data-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 22px;
}

.data-item {
    flex: 1 1 280px;
    max-width: 380px;
    text-align: left;
}

/* 联系 */
.contact-box {
    text-align: center;
    font-size: 1.02rem;
    color: var(--text-muted);
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 32px 24px;
    max-width: 560px;
    margin: 0 auto;
    backdrop-filter: blur(8px);
    box-shadow: var(--shadow);
}

.contact-box p {
    margin-bottom: 10px;
}

.contact-box p:last-child {
    margin-bottom: 0;
}

/* 页脚 */
footer {
    position: relative;
    z-index: 2;
    background: rgba(5, 15, 30, 0.92);
    border-top: 1px solid var(--line);
    padding: 44px 0 28px;
    margin-top: 20px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 28px 40px;
}

.footer-col h4 {
    color: var(--text);
    margin-bottom: 14px;
    font-size: 1rem;
}

.footer-col a {
    color: var(--text-dim);
    text-decoration: none;
    display: block;
    margin-bottom: 8px;
    transition: color 0.2s ease;
}

.footer-col a:hover {
    color: var(--accent);
}

.copyright {
    text-align: center;
    margin-top: 32px;
    padding-top: 22px;
    border-top: 1px solid rgba(100, 255, 218, 0.08);
    color: var(--text-dim);
    font-size: 0.88rem;
}

.copyright p {
    margin: 0;
}

.icp-wrap {
    margin-top: 14px;
}

.icp-link {
    color: var(--accent);
    text-decoration: none;
    transition: all 0.3s ease;
    background: rgba(23, 42, 69, 0.6);
    padding: 8px 20px;
    border-radius: 30px;
    display: inline-block;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(100, 255, 218, 0.1);
    font-size: 0.9rem;
}

.icp-link:hover {
    background: rgba(100, 255, 218, 0.1);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(100, 255, 218, 0.2);
}

@media (max-width: 900px) {
    .service-box,
    .ai-grid {
        grid-template-columns: 1fr;
    }

    .nav {
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
    }

    .nav-menu {
        width: 100%;
        justify-content: flex-start;
    }
}

@media (max-width: 768px) {
    .banner {
        padding: 70px 0 60px;
    }

    .section {
        padding: 48px 0;
    }
}