/* ==================== 产品详情页样式 ==================== */

/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, #1a365d 0%, #1e5a9e 40%, #2c7be5 100%);
    color: var(--white);
    padding: 80px 0 36px;
    margin-top: 64px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -15%;
    width: 450px;
    height: 450px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.03);
    animation: pageHeaderFloat 12s ease-in-out infinite;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: -40%;
    left: -10%;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.03);
    animation: pageHeaderFloat 10s ease-in-out infinite reverse;
}

@keyframes pageHeaderFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(20px, -12px) scale(1.04); }
    66% { transform: translate(-12px, 8px) scale(0.96); }
}

.page-header h1 {
    font-size: 40px;
    margin-bottom: 14px;
    font-weight: 700;
    position: relative;
    z-index: 1;
    animation: fadeInDown 0.8s ease;
}

.page-header p {
    font-size: 17px;
    opacity: 0.9;
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.8s ease;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 产品详情 */
.product-detail {
    background: var(--bg-light);
}

.product-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px;
    margin-bottom: 36px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: var(--transition);
}

.product-item:hover {
    box-shadow: var(--shadow-lg);
}

.product-item:last-child {
    margin-bottom: 0;
}

.product-detail-header {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 2px solid var(--bg-light);
}

.product-icon {
    width: 88px;
    height: 88px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.product-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 70%, rgba(255,255,255,0.2) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(255,255,255,0.1) 0%, transparent 50%);
}

.product-icon i {
    font-size: 40px;
    color: var(--white);
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.15));
}

.product-title h2 {
    font-size: 28px;
    color: var(--text-dark);
    margin-bottom: 8px;
    font-weight: 700;
}

.product-subtitle {
    font-size: 14px;
    color: var(--text-light);
    font-style: italic;
}

.product-content h3 {
    font-size: 21px;
    color: var(--text-dark);
    margin-bottom: 18px;
    margin-top: 34px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.product-content h3::before {
    content: '';
    width: 4px;
    height: 24px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.product-content h3:first-child {
    margin-top: 0;
}

.product-description p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-light);
}

/* 功能网格 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 22px;
    margin-top: 25px;
}

.feature-box {
    background: var(--bg-light);
    padding: 28px;
    border-radius: var(--radius);
    transition: var(--transition);
    border-left: 4px solid transparent;
    position: relative;
    overflow: hidden;
}

.feature-box::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 60px;
    height: 60px;
    background: rgba(30, 90, 158, 0.03);
    border-radius: 0 0 0 60px;
    transition: var(--transition);
}

.feature-box:hover {
    box-shadow: var(--shadow);
    border-left-color: var(--primary-color);
    transform: translateY(-4px);
}

.feature-box:hover::after {
    width: 80px;
    height: 80px;
}

.feature-box i {
    font-size: 34px;
    color: var(--primary-color);
    margin-bottom: 14px;
    transition: var(--transition);
}

.feature-box:hover i {
    transform: scale(1.1);
    color: var(--secondary-color);
}

.feature-box h4 {
    font-size: 17px;
    color: var(--text-dark);
    margin-bottom: 10px;
    font-weight: 600;
}

.feature-box p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

/* 产品优势列表 */
.advantage-list {
    list-style: none;
    margin-top: 18px;
}

.advantage-list li {
    padding: 14px 0;
    font-size: 15px;
    color: var(--text-dark);
    display: flex;
    align-items: flex-start;
    gap: 14px;
    border-bottom: 1px solid var(--bg-light);
    transition: var(--transition);
}

.advantage-list li:hover {
    padding-left: 6px;
}

.advantage-list li:last-child {
    border-bottom: none;
}

.advantage-list li i {
    color: #22c55e;
    font-size: 18px;
    margin-top: 1px;
    flex-shrink: 0;
}

.advantage-list li strong {
    color: var(--text-dark);
    font-weight: 600;
}

/* 应用场景 */
.application-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 18px;
    margin-top: 25px;
}

.application-item {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 30px 20px;
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.application-item::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -40%;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    transition: var(--transition);
}

.application-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 28px rgba(30, 90, 158, 0.3);
}

.application-item:hover::before {
    transform: scale(1.5);
}

.application-item i {
    font-size: 34px;
    margin-bottom: 12px;
    display: block;
    position: relative;
    z-index: 1;
}

.application-item span {
    font-size: 15px;
    font-weight: 600;
    position: relative;
    z-index: 1;
}

/* CTA区域 */
.cta-section {
    background: linear-gradient(135deg, #1a365d 0%, #1e5a9e 40%, #2c7be5 100%);
    color: var(--white);
    padding: 42px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.03);
    animation: ctaFloat 8s ease-in-out infinite;
}

@keyframes ctaFloat {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, -20px); }
}

.cta-section h2 {
    font-size: 26px;
    margin-bottom: 10px;
    font-weight: 700;
    position: relative;
    z-index: 1;
}

.cta-section p {
    font-size: 16px;
    margin-bottom: 24px;
    opacity: 0.92;
    position: relative;
    z-index: 1;
}

.cta-section .btn-primary {
    background: var(--white);
    color: var(--primary-color);
    padding: 14px 38px;
    font-size: 16px;
    font-weight: 600;
    position: relative;
    z-index: 1;
}

.cta-section .btn-primary:hover {
    background: #f0f4ff;
    transform: translateY(-3px);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.15);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .page-header h1 {
        font-size: 32px;
    }

    .product-item {
        padding: 30px 22px;
    }

    .product-detail-header {
        flex-direction: column;
        text-align: center;
    }

    .product-icon {
        width: 80px;
        height: 80px;
    }

    .product-title h2 {
        font-size: 24px;
    }

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

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

    .cta-section h2 {
        font-size: 26px;
    }
}

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

    .product-item {
        padding: 24px 16px;
    }
}