/* ============================================
   KTZN 子页面样式
   ============================================ */

/* 页面头部 */
.page-header {
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 160px 60px 80px;
    position: relative;
    z-index: 10;
    background: linear-gradient(180deg, rgba(5, 5, 16, 0) 0%, rgba(5, 5, 16, 0.8) 100%);
}

.page-header-content {
    max-width: 800px;
}

.page-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--primary-cyan);
    letter-spacing: 3px;
    margin-bottom: 20px;
    padding: 8px 20px;
    background: rgba(0, 245, 255, 0.1);
    border: 1px solid rgba(0, 245, 255, 0.3);
    border-radius: 30px;
}

.page-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   关于页面样式
   ============================================ */

/* 公司简介 */
.about-intro {
    padding: var(--section-padding);
    position: relative;
    z-index: 10;
}

.intro-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 80px;
    align-items: start;
}

.intro-content h2 {
    font-size: 2.2rem;
    margin-bottom: 10px;
}

.company-en {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 30px;
    font-family: var(--font-mono);
}

.intro-text p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 20px;
}

.intro-text strong {
    color: var(--primary-cyan);
}

/* 公司数据统计 */
.company-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.stat-block {
    padding: 35px;
    background: var(--gradient-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition-normal);
}

.stat-block:hover {
    border-color: rgba(0, 245, 255, 0.3);
    transform: translateY(-5px);
}

.stat-num {
    display: block;
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

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

/* 企业理念 */
.philosophy {
    padding: var(--section-padding);
    background: var(--gradient-dark);
    position: relative;
    z-index: 10;
}

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

.philosophy-card {
    padding: 50px 40px;
    background: var(--gradient-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition-normal);
}

.philosophy-card:hover {
    border-color: rgba(0, 245, 255, 0.3);
    transform: translateY(-10px);
}

.phi-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 25px;
    color: var(--primary-cyan);
}

.phi-icon svg {
    width: 100%;
    height: 100%;
}

.philosophy-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
}

.philosophy-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 核心业务 */
.core-business {
    padding: var(--section-padding);
    position: relative;
    z-index: 10;
}

.business-timeline {
    position: relative;
    padding-left: 100px;
}

.business-timeline::before {
    content: '';
    position: absolute;
    left: 40px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-light);
}

.timeline-item {
    position: relative;
    padding: 40px;
    margin-bottom: 30px;
    background: var(--gradient-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
}

.timeline-item:hover {
    border-color: rgba(0, 245, 255, 0.3);
}

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

.timeline-marker {
    position: absolute;
    left: -80px;
    top: 40px;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-main);
    border-radius: 50%;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    color: var(--bg-primary);
}

.timeline-content h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
}

.timeline-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.business-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.business-tags li {
    padding: 6px 16px;
    background: rgba(0, 245, 255, 0.1);
    border: 1px solid rgba(0, 245, 255, 0.2);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--primary-cyan);
}

/* 联系CTA */
.contact-section {
    padding: var(--section-padding);
    background: var(--gradient-dark);
    position: relative;
    z-index: 10;
}

.contact-cta {
    text-align: center;
    padding: 80px;
    background: var(--gradient-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
}

.contact-cta h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.contact-cta p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

/* ============================================
   解决方案页面样式
   ============================================ */

.solution-hero {
    padding: var(--section-padding);
    position: relative;
    z-index: 10;
}

.solution-overview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.overview-content h2 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.overview-content p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 15px;
}

.overview-visual {
    display: flex;
    justify-content: center;
}

.visual-box {
    width: 400px;
    height: 400px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-ring {
    position: absolute;
    border: 2px solid rgba(0, 245, 255, 0.2);
    border-radius: 50%;
    animation: visualRotate 20s linear infinite;
}

.visual-ring:nth-child(1) { width: 300px; height: 300px; }
.visual-ring:nth-child(2) { width: 220px; height: 220px; animation-direction: reverse; }
.visual-ring:nth-child(3) { width: 140px; height: 140px; }

@keyframes visualRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.visual-center {
    width: 80px;
    height: 80px;
    background: var(--gradient-main);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--bg-primary);
    box-shadow: 0 0 60px rgba(0, 245, 255, 0.4);
}

/* 解决方案特性 */
.solution-features {
    padding: var(--section-padding);
    background: var(--gradient-dark);
    position: relative;
    z-index: 10;
}

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

.feature-card {
    padding: 40px;
    background: var(--gradient-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
}

.feature-card:hover {
    border-color: rgba(0, 245, 255, 0.3);
    transform: translateY(-5px);
}

.feature-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 25px;
    color: var(--primary-cyan);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 案例展示 */
.case-studies {
    padding: var(--section-padding);
    position: relative;
    z-index: 10;
}

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

.case-card {
    padding: 40px;
    background: var(--gradient-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
}

.case-card:hover {
    border-color: rgba(0, 245, 255, 0.3);
}

.case-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.case-badge {
    padding: 6px 14px;
    background: rgba(0, 245, 255, 0.1);
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--primary-cyan);
}

.case-card h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.case-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.case-tags span {
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ============================================
   研究课题页面样式
   ============================================ */

.research-intro {
    padding: var(--section-padding);
    position: relative;
    z-index: 10;
}

.research-content {
    max-width: 900px;
    margin: 0 auto;
}

.research-content h2 {
    font-size: 2rem;
    margin-bottom: 25px;
    text-align: center;
}

.research-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 20px;
}

.highlight-box {
    padding: 40px;
    background: var(--gradient-card);
    border-left: 4px solid var(--primary-cyan);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin: 40px 0;
}

.highlight-box h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--primary-cyan);
}

.highlight-box p {
    margin-bottom: 0;
    font-size: 1rem;
}

.key-points {
    padding: var(--section-padding);
    background: var(--gradient-dark);
    position: relative;
    z-index: 10;
}

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

.point-card {
    padding: 40px;
    background: var(--gradient-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
}

.point-num {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
}

.point-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.point-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   响应式设计
   ============================================ */

@media (max-width: 992px) {
    .page-title {
        font-size: 2.5rem;
    }
    
    .intro-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .philosophy-grid {
        grid-template-columns: 1fr;
    }
    
    .business-timeline {
        padding-left: 0;
    }
    
    .business-timeline::before {
        display: none;
    }
    
    .timeline-marker {
        position: relative;
        left: auto;
        top: auto;
        margin-bottom: 20px;
    }
    
    .solution-overview {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .points-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .page-header {
        padding: 140px 20px 60px;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .company-stats {
        grid-template-columns: 1fr;
    }
    
    .contact-cta {
        padding: 40px 20px;
    }
    
    .contact-cta h2 {
        font-size: 1.8rem;
    }
}