/* 关于我们页面样式 */

/* 基础容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2d3748;
    text-align: center;
    margin-bottom: 60px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -16px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: #667eea;
    border-radius: 2px;
}

/* 页面头部横幅 */
.page-hero {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    overflow: hidden;
    margin-top: -80px; /* 抵消body的padding-top */
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.hero-bg-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.9) 0%, rgba(118, 75, 162, 0.9) 100%);
}

.hero-bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #fff 0%, #f0f0f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 48px;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* 公司介绍 */
.company-intro {
    padding: 100px 0;
    background: white;
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    justify-items: center;
    width: 100%;
}

.intro-text {
    max-width: 500px;
    width: 100%;
}

.intro-description {
    font-size: 1.125rem;
    line-height: 1.7;
    color: #2d3748;
    margin-bottom: 40px;
    font-weight: 400;
}

.intro-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.feature-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 8px;
}

.feature-content p {
    color: #2d3748;
    line-height: 1.6;
    font-weight: 400;
}

.intro-image {
    text-align: center;
}

.intro-image-placeholder {
    width: 100%;
    height: 400px;
    border-radius: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.intro-image-placeholder::before {
    content: '👥';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 120px;
    opacity: 0.3;
}

.intro-image img {
    max-width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

/* 发展历程 */
.timeline-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 60px;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-marker {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.125rem;
    position: relative;
    z-index: 2;
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.3);
}

.timeline-content {
    flex: 1;
    padding: 0 40px;
    background: white;
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    margin: 0 20px;
}

.timeline-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 8px;
}

.timeline-content p {
    color: #2d3748;
    line-height: 1.6;
    font-weight: 400;
}

/* 技术优势 */
.tech-advantages {
    padding: 100px 0;
    background: white;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    margin-top: 60px;
}

.advantage-card {
    background: white;
    padding: 40px 32px;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.15);
    border-color: #667eea;
}

.advantage-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.3);
}

.advantage-icon svg {
    width: 40px;
    height: 40px;
    color: white;
}

.advantage-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 16px;
}

.advantage-card p {
    color: #2d3748;
    line-height: 1.6;
    font-weight: 400;
}

/* 服务特色 */
.service-features {
    padding: 100px 0;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 60px;
}

.feature-card {
    background: white;
    padding: 32px;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.15);
}

.feature-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.feature-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1a202c;
}

.feature-card p {
    color: #2d3748;
    line-height: 1.6;
    font-weight: 400;
}

/* 团队介绍 */
.team-section {
    padding: 100px 0;
    background: white;
}

.team-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    justify-items: center;
    width: 100%;
}

.team-description {
    font-size: 1.125rem;
    line-height: 1.7;
    color: #2d3748;
    margin-bottom: 40px;
    font-weight: 400;
}

.team-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.stat-card {
    text-align: center;
    padding: 24px;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.15);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 8px;
}

.stat-label {
    color: #4a5568;
    font-size: 0.875rem;
}

.team-image {
    text-align: center;
}

.team-image img {
    max-width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

/* 联系我们 */
.contact-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    margin-top: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.15);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.contact-details h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 4px;
}

.contact-details p {
    color: #2d3748;
    font-weight: 500;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.contact-form h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 32px;
    text-align: center;
}

.form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-input,
.form-textarea {
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 0.875rem;
    transition: all 0.3s ease;
    background: white;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-stats {
        gap: 32px;
    }
    
    .intro-content,
    .team-content,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        flex-direction: row !important;
    }
    
    .timeline-marker {
        width: 40px;
        height: 40px;
        font-size: 0.875rem;
    }
    
    .timeline-content {
        margin-left: 60px;
        margin-right: 0;
    }
    
    .team-stats {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .contact-form {
        padding: 24px;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
    }
}