/* 行业导航 */
.industry-nav {
    position: sticky;
    top: 70px;
    z-index: 100;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
}

.industry-tabs {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.industry-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.industry-tab:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.industry-tab.active {
    background: var(--gradient-1);
    border-color: transparent;
    color: white;
}

.industry-tab i {
    font-size: 16px;
}

/* 解决方案详情 */
.solutions-detail {
    background: var(--dark-bg);
    min-height: 600px;
}

.solution-content {
    display: none;
    animation: fadeIn 0.5s ease;
}

.solution-content.active {
    display: block;
}

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

.solution-header {
    margin-bottom: 60px;
}

.solution-banner {
    text-align: center;
    padding: 60px 40px;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1) 0%, rgba(123, 97, 255, 0.1) 100%);
    border: 1px solid var(--border-color);
    border-radius: 16px;
}

.banner-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 24px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: white;
}

.solution-banner h2 {
    font-size: 36px;
    margin-bottom: 16px;
}

.solution-banner p {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

.solution-features {
    margin-bottom: 60px;
}

.solution-features h3 {
    font-size: 28px;
    text-align: center;
    margin-bottom: 40px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.feature-box {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 40px 30px;
    transition: all 0.3s ease;
}

.feature-box:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.feature-box .feature-icon {
    width: 70px;
    height: 70px;
    margin-bottom: 20px;
    background: var(--gradient-2);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: white;
}

.feature-box h4 {
    font-size: 22px;
    margin-bottom: 12px;
}

.feature-box p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 15px;
}

.solution-benefits {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 40px;
}

.solution-benefits h3 {
    font-size: 24px;
    margin-bottom: 30px;
}

.solution-benefits ul {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.solution-benefits li {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 16px;
    padding: 10px 0;
}

.solution-benefits i {
    color: var(--primary-color);
    font-size: 20px;
}

/* 成功案例 */
.success-cases {
    background: var(--darker-bg);
}

.cases-slider {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.case-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.case-image {
    height: 180px;
    background: var(--gradient-2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 64px;
    color: white;
}

.case-content {
    padding: 30px;
}

.case-content h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.case-content p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.8;
    font-size: 15px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .solution-benefits ul {
        grid-template-columns: 1fr;
    }
    
    .cases-slider {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .industry-tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        justify-content: flex-start;
        padding-bottom: 10px;
    }
    
    .industry-tab {
        white-space: nowrap;
    }
    
    .solution-banner {
        padding: 40px 20px;
    }
    
    .solution-banner h2 {
        font-size: 28px;
    }
    
    .solution-banner p {
        font-size: 16px;
    }
    
    .feature-box {
        padding: 30px 20px;
    }
}

@media (max-width: 480px) {
    .industry-nav {
        padding: 15px 0;
    }
    
    .industry-tab {
        padding: 10px 16px;
        font-size: 13px;
    }
    
    .solution-benefits {
        padding: 30px 20px;
    }
}

/* 详细方案 */
.detailed-solution {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 40px;
    margin-top: 40px;
}

.detailed-solution h3 {
    font-size: 28px;
    margin-bottom: 30px;
    text-align: center;
}

.solution-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.solution-tab-btn {
    flex: 1;
    min-width: 120px;
    padding: 12px 24px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.solution-tab-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.solution-tab-btn.active {
    background: var(--gradient-1);
    border-color: transparent;
    color: white;
}

.solution-tab-content {
    display: none;
    animation: fadeIn 0.5s ease;
}

.solution-tab-content.active {
    display: block;
}

.solution-tab-content h4 {
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.solution-tab-content h5 {
    font-size: 18px;
    margin-bottom: 15px;
    margin-top: 25px;
    color: var(--text-primary);
}

.solution-tab-content p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 15px;
    font-size: 15px;
}

.solution-highlights ul,
.architecture-diagram ul,
.tech-stack {
    background: var(--dark-bg);
    padding: 25px;
    border-radius: 8px;
    margin-top: 20px;
}

.solution-highlights ul li,
.architecture-diagram ul li {
    padding: 12px 0;
    padding-left: 30px;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.8;
}

.solution-highlights ul li:before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.architecture-diagram ul li:before {
    content: '\f0da';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.tech-stack p {
    margin: 10px 0;
}

.tech-stack strong {
    color: var(--text-primary);
}

/* 实施步骤 */
.implementation-steps {
    display: grid;
    gap: 20px;
}

.step {
    display: flex;
    gap: 20px;
    background: var(--dark-bg);
    padding: 25px;
    border-radius: 8px;
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    color: white;
}

.step-content h5 {
    margin-top: 0;
    font-size: 18px;
    margin-bottom: 10px;
}

.step-content p {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 案例研究 */
.case-study {
    background: var(--dark-bg);
    padding: 30px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.case-study:last-child {
    margin-bottom: 0;
}

.case-study h5 {
    font-size: 20px;
    margin-bottom: 15px;
    margin-top: 0;
    color: var(--text-primary);
}

.case-study p {
    margin: 10px 0;
}

.case-study p strong {
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .detailed-solution {
        padding: 20px;
    }
    
    .solution-tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 10px;
    }
    
    .solution-tab-btn {
        white-space: nowrap;
        flex: none;
    }
    
    .step {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .case-study {
        padding: 20px;
    }
}