/* 产品系列介绍区域样式 - 优化版 */
.product-overview-section {
    background: linear-gradient(135deg, var(--bg-section) 0%, var(--border-light) 100%);
    position: relative;
    overflow: hidden;
}

.product-overview-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 100%;
    height: 200%;
    background: radial-gradient(circle, var(--primary-alpha-10) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    50% {
        transform: translate(-20px, -10px) rotate(1deg);
    }
}

.overview-container {
    position: relative;
    z-index: 2;
}

.overview-title {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
    .overview-title {
        font-size: 2rem;
    }
}

.overview-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.feature-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    border: 1px solid var(--primary-alpha-10);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    color: var(--text-white);
    font-size: 1.5rem;
}

.feature-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.feature-desc {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.specs-highlight {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    margin-top: 2rem;
    border: 1px solid var(--primary-alpha-10);
}

.specs-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.spec-item {
    text-align: center;
    padding: 1rem;
    background: var(--bg-section);
    border-radius: var(--radius-sm);
    transition: var(--transition-normal);
}

.spec-item:hover {
    background: var(--bg-hover);
    transform: scale(1.02);
}

.spec-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
    display: block;
    margin-bottom: 0.25rem;
}

.spec-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.highlight-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--gradient-primary);
    color: var(--text-white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    margin: 0.25rem;
    transition: var(--transition-fast);
}

.highlight-badge:hover {
    transform: scale(1.05);
}

.badges-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

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

.application-item {
    background: var(--primary-alpha-10);
    padding: 1rem;
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--primary-color);
    transition: var(--transition-normal);
}

.application-item:hover {
    background: var(--primary-alpha-20);
    transform: translateX(5px);
}

.application-title {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.application-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* 技术特点表格样式 */
.tech-features-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 2rem;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.tech-features-table th {
    background: var(--gradient-primary);
    color: var(--text-white);
    padding: 1rem;
    text-align: left;
    font-weight: 600;
}

.tech-features-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-light);
    vertical-align: top;
}

.tech-features-table tr:hover {
    background-color: var(--bg-section);
}

.tech-features-table tr:last-child td {
    border-bottom: none;
}

.feature-highlight {
    font-weight: 600;
    color: var(--primary-color);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }

    .specs-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .feature-card {
        padding: 1.25rem;
    }

    .specs-highlight {
        padding: 1.5rem;
    }

    .applications-grid {
        grid-template-columns: 1fr;
    }

    .tech-features-table {
        font-size: 0.9rem;
    }

    .tech-features-table th,
    .tech-features-table td {
        padding: 0.75rem;
    }
}

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