/* About Us Page - Modern Design */
/* 使用 about- 前缀避免选择器冲突 */

/* About Container */
.about-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 全局样式重置 */
.about-page {
    background: #ffffff;
    overflow-x: hidden;
}

/* Hero Section */
.about-hero {
    position: relative;
    min-height: 100vh;
    padding: 0;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    overflow: hidden;
    margin-top: 0;
}

.about-hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.about-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
}

.about-floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.about-shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: aboutFloat 20s infinite linear;
}

.about-shape-1 {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.about-shape-2 {
    width: 120px;
    height: 120px;
    top: 60%;
    right: 15%;
    animation-delay: -7s;
}

.about-shape-3 {
    width: 60px;
    height: 60px;
    top: 80%;
    left: 70%;
    animation-delay: -14s;
}

@keyframes aboutFloat {
    0% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.7;
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 0.3;
    }
    100% {
        transform: translateY(0px) rotate(360deg);
        opacity: 0.7;
    }
}

.about-hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.about-hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    color: #ffffff;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.about-hero-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, #ffd700 0%, #ff6b6b 100%);
    border-radius: 2px;
    box-shadow: 0 2px 8px rgba(255, 215, 0, 0.4);
}

.about-hero-subtitle {
    font-size: 1.4rem;
    margin-bottom: 3rem;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.6;
    font-weight: 400;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.about-hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 3rem;
}

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

.about-stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #ffd700;
}

.about-stat-label {
    font-size: 1rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.about-scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.about-scroll-arrow {
    width: 30px;
    height: 30px;
    border: 2px solid white;
    border-top: none;
    border-right: none;
    transform: rotate(-45deg);
    animation: aboutBounce 2s infinite;
}

@keyframes aboutBounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) rotate(-45deg);
    }
    40% {
        transform: translateY(-10px) rotate(-45deg);
    }
    60% {
        transform: translateY(-5px) rotate(-45deg);
    }
}

/* Story Section */
.about-story {
    padding: 6rem 0;
    background: #f8f9fa;
}

.about-story-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-section-tag {
    display: inline-block;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.about-section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.about-story-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #666;
    margin-bottom: 1.5rem;
}

.about-story-features {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.about-feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    flex: 1;
    min-width: 0;
    padding: 1.5rem 0.5rem;
    border-radius: 12px;
    background: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.about-feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(39, 174, 96, 0.1), transparent);
    transition: left 0.6s ease;
}

.about-feature-item:hover::before {
    left: 100%;
}

.about-feature-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.about-feature-item i {
    color: #27ae60;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.about-feature-item:hover i {
    color: #219a52;
    transform: scale(1.1) rotate(5deg);
}

.about-feature-item span {
    font-weight: 600;
    color: #2c3e50;
    font-size: 1rem;
    line-height: 1.4;
    transition: color 0.3s ease;
}

.about-feature-item:hover span {
    color: #27ae60;
}

.about-story-visual {
    position: relative;
}

.about-image-container {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.about-image-placeholder {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 4rem;
}

.about-image-decoration {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #ffd700, #ff6b6b);
    border-radius: 50%;
    z-index: -1;
}

/* Values Section */
.about-values {
    padding: 6rem 0;
    background: white;
}

.about-section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.about-section-subtitle {
    font-size: 1.2rem;
    color: #666;
    margin-top: 1rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.about-values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.about-value-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.about-value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.about-value-card:hover::before {
    left: 100%;
}

.about-value-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.about-value-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
    transition: transform 0.3s ease;
}

.about-value-card:hover .about-value-icon {
    transform: scale(1.1) rotate(5deg);
}

.about-value-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.about-value-description {
    color: #666;
    line-height: 1.6;
}

/* Timeline Section */
.about-timeline {
    padding: 6rem 0;
    background: #f8f9fa;
}

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

.about-timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, #667eea, #764ba2);
    transform: translateX(-50%);
}

.about-timeline-item {
    position: relative;
    margin-bottom: 3rem;
    display: flex;
    align-items: center;
}

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

.about-timeline-marker {
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    box-shadow: 0 0 0 4px white, 0 0 0 8px #667eea;
}

.about-timeline-content {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    width: calc(50% - 40px);
    position: relative;
}

.about-timeline-item:nth-child(odd) .about-timeline-content {
    margin-right: auto;
}

.about-timeline-item:nth-child(even) .about-timeline-content {
    margin-left: auto;
}

.about-timeline-year {
    display: inline-block;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.about-timeline-content h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.about-timeline-content p {
    color: #666;
    line-height: 1.6;
}

/* Team Section */
.about-team {
    padding: 6rem 0;
    background: white;
}

.about-team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    max-width: 800px;
    margin: 0 auto;
}

.about-team-member {
    text-align: center;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.about-team-member:hover {
    transform: translateY(-10px);
}

.about-member-photo {
    position: relative;
    width: 150px;
    height: 150px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    overflow: hidden;
}

.about-photo-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

.about-member-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.about-member-photo:hover .about-member-overlay {
    opacity: 1;
}

.about-member-social {
    display: flex;
    gap: 1rem;
}

.about-social-link {
    width: 40px;
    height: 40px;
    background: white;
    color: #667eea;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.about-social-link:hover {
    transform: scale(1.1);
}

.about-member-info h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.about-member-role {
    color: #667eea;
    font-weight: 600;
    margin-bottom: 1rem;
}

.about-member-bio {
    color: #666;
    line-height: 1.6;
    font-size: 0.95rem;
}

/* CTA Section */
.about-cta {
    position: relative;
    padding: 6rem 0;
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    text-align: center;
}

.about-cta-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.about-cta-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
}

.about-cta-content {
    position: relative;
    z-index: 2;
}

.about-cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #ffffff;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.about-cta-subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 2.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    font-weight: 400;
    line-height: 1.6;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.about-cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.about-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.about-btn-primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.about-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
}

.about-btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.about-btn-secondary:hover {
    background: white;
    color: #2c3e50;
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .about-story-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .about-hero-stats {
        gap: 2rem;
    }
    
    .about-timeline-line {
        left: 30px;
    }
    
    .about-timeline-marker {
        left: 30px;
    }
    
    .about-timeline-item {
        flex-direction: row !important;
    }
    
    .about-timeline-content {
        width: calc(100% - 80px);
        margin-left: 80px !important;
        margin-right: 0 !important;
    }
}

@media (max-width: 768px) {
    .about-hero-title {
        font-size: 2.5rem;
    }
    
    .about-hero-subtitle {
        font-size: 1.1rem;
    }
    
    .about-hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .about-section-title {
        font-size: 2rem;
    }
    
    .about-values-grid {
        grid-template-columns: 1fr;
    }
    
    .about-team-grid {
        grid-template-columns: 1fr;
    }
    
    .about-story-features {
        flex-direction: column;
        gap: 1rem;
    }
    
    .about-feature-item {
        flex: none;
        padding: 1.5rem 1rem;
    }
    
    .about-feature-item i {
        font-size: 2rem;
    }
    
    .about-cta-title {
        font-size: 2rem;
    }
    
    .about-cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .about-hero {
        padding: 2rem 0;
    }
    
    .about-hero-title {
        font-size: 2rem;
    }
    
    .about-section-title {
        font-size: 1.8rem;
    }
    
    .about-value-card,
    .about-team-member {
        padding: 1.5rem;
    }
    
    .about-timeline-content {
        padding: 1.5rem;
    }
}

/* 动画效果 */
@keyframes aboutFadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.about-animate-on-scroll {
    animation: aboutFadeInUp 0.6s ease-out;
}