/* About页面样式 - 现代化优化版本 */
:root {
    --primary-color: #7559FF;
    --secondary-color: #6A7DFF;
    --gradient-primary: linear-gradient(135deg, #7559FF 0%, #6A7DFF 100%);
    --gradient-secondary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --dark-color: #17171D;
    --light-color: #f9f9f9;
    --white-color: #fff;
    --gray-color: rgba(23, 23, 29, 0.48);
    --text-muted: #6b7280;
    --text-dark: #374151;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --border-color: #e5e7eb;
    --section-padding: 5rem 0;
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --card-shadow-hover: 0 20px 60px rgba(0, 0, 0, 0.15);
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s ease;
    --border-radius: 16px;
    --border-radius-lg: 24px;
}
 
/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* 动画定义 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* 通用容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* About Hero Section */
.about-hero {
    background: url('../images/3a2779fe.jpg') no-repeat center center, 
            linear-gradient(135deg, #7559FF 0%, #6A7DFF 100%);
    background-size: cover;
    color: var(--white-color);
    padding: 10rem 0 8rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.about-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    animation: float 6s ease-in-out infinite;
}

.about-hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: linear-gradient(transparent, var(--white-color));
    clip-path: polygon(0 100%, 100% 0, 100% 100%);
}

.about-hero .container {
    position: relative;
    z-index: 2;
}

.about-hero h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 2rem;
    line-height: 1.2;
    background: linear-gradient(45deg, #fff, rgba(255, 255, 255, 0.8));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease-out;
}

.about-hero p {
    font-size: 1.4rem;
    opacity: 0.95;
    max-width: 700px;
    margin: 0 auto 3rem;
    line-height: 1.7;
    animation: fadeInUp 1s ease-out 0.2s both;
}

/* 英雄区域统计数据 */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-top: 4rem;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    color: var(--white-color);
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
    color: var(--white-color);
}

/* Mission Section */
.about-mission {
    padding: var(--section-padding);
    background: var(--bg-secondary);
    position: relative;
}

.mission-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 4rem;
    align-items: center;
}

.mission-item {
    padding: 2rem;
    background: var(--white-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(40px);
}

.mission-item.animate {
    animation: fadeInUp 0.8s ease-out forwards;
}

.mission-item:nth-child(2) {
    animation-delay: 0.2s;
}

.mission-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-shadow-hover);
}

.mission-item h2 {
    color: var(--dark-color);
    margin-bottom: 1.5rem;
    font-size: 2.2rem;
    font-weight: 700;
    position: relative;
}

.mission-item h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.mission-item p {
    font-size: 1.1rem;
    color: var(--text-muted);
    line-height: 1.8;
    margin: 0;
}

/* 技术优势区域 */
.about-advantages {
    padding: var(--section-padding);
    background: var(--white-color);
    position: relative;
}

.about-advantages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 10% 20%, rgba(117, 89, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(106, 125, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.about-advantages .container {
    position: relative;
    z-index: 2;
}

.about-advantages h2 {
    text-align: center;
    margin-bottom: 4rem;
    color: var(--dark-color);
    font-size: 3rem;
    font-weight: 800;
    opacity: 0;
    transform: translateY(40px);
}

.about-advantages h2.animate {
    animation: fadeInUp 0.8s ease-out forwards;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.advantage-item {
    text-align: center;
    padding: 3rem 2rem;
    border-radius: var(--border-radius-lg);
    background: var(--bg-secondary);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(40px);
}

.advantage-item.animate {
    animation: fadeInUp 0.8s ease-out forwards;
}

.advantage-item:nth-child(2) { animation-delay: 0.1s; }
.advantage-item:nth-child(3) { animation-delay: 0.2s; }
.advantage-item:nth-child(4) { animation-delay: 0.3s; }

.advantage-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
    transition: left 0.5s ease;
}

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

.advantage-item:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--card-shadow-hover);
    background: var(--white-color);
    border-color: var(--primary-color);
}

.advantage-icon {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.advantage-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-accent);
    opacity: 0;
    transition: var(--transition);
}

.advantage-item:hover .advantage-icon::before {
    opacity: 1;
}

.advantage-item:hover .advantage-icon {
    transform: scale(1.1) rotate(5deg);
    animation: pulse 2s infinite;
}

.advantage-icon i {
    font-size: 2.5rem;
    color: var(--white-color);
    z-index: 2;
    position: relative;
}

.advantage-item h3 {
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    color: var(--dark-color);
    font-weight: 700;
}

.advantage-item p {
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.advantage-stats {
    margin-top: 1rem;
}

.stat-highlight {
    background: var(--gradient-primary);
    color: var(--white-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-block;
    box-shadow: 0 4px 12px rgba(117, 89, 255, 0.3);
    transition: var(--transition);
}

.advantage-item:hover .stat-highlight {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(117, 89, 255, 0.4);
}

/* Values Section */
.about-values {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

.about-values h2 {
    text-align: center;
    margin-bottom: 4rem;
    color: var(--dark-color);
    font-size: 3rem;
    font-weight: 800;
    opacity: 0;
    transform: translateY(40px);
}

.about-values h2.animate {
    animation: fadeInUp 0.8s ease-out forwards;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.value-item {
    text-align: center;
    padding: 3rem 2rem;
    border-radius: var(--border-radius-lg);
    background: var(--white-color);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(40px);
}

.value-item.animate {
    animation: fadeInUp 0.8s ease-out forwards;
}

.value-item:nth-child(2) { animation-delay: 0.1s; }
.value-item:nth-child(3) { animation-delay: 0.2s; }
.value-item:nth-child(4) { animation-delay: 0.3s; }

.value-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-shadow-hover);
    border-color: var(--primary-color);
}

.value-icon {
    width: 90px;
    height: 90px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    transition: var(--transition);
}

.value-item:hover .value-icon {
    transform: scale(1.1);
    animation: pulse 2s infinite;
}

.value-icon i {
    font-size: 2.2rem;
    color: var(--white-color);
}

.value-item h3 {
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    color: var(--dark-color);
    font-weight: 700;
}

.value-item p {
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 0;
}

/* Future Timeline Section */
.about-future {
    padding: var(--section-padding);
    background: var(--white-color);
    position: relative;
}

.about-future h2 {
    text-align: center;
    margin-bottom: 4rem;
    color: var(--dark-color);
    font-size: 3rem;
    font-weight: 800;
    opacity: 0;
    transform: translateY(40px);
}

.about-future h2.animate {
    animation: fadeInUp 0.8s ease-out forwards;
}

.future-timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.future-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-primary);
    transform: translateX(-50%);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: 4rem;
    opacity: 0;
    transform: translateY(40px);
}

.timeline-item.animate {
    animation: fadeInUp 0.8s ease-out forwards;
}

.timeline-item:nth-child(2) { animation-delay: 0.2s; }
.timeline-item:nth-child(3) { animation-delay: 0.4s; }

.timeline-year {
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: var(--white-color);
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: var(--card-shadow);
    z-index: 2;
}

.timeline-content {
    width: 45%;
    padding: 3rem 2rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    margin-top: 3rem;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: auto;
    margin-right: 5%;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 5%;
    margin-right: auto;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
    background: var(--white-color);
}

.timeline-content h3 {
    color: var(--dark-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
    font-weight: 700;
}

.timeline-content p {
    color: var(--text-muted);
    line-height: 1.7;
    margin: 0;
}

/* Join Section */
.about-join {
    padding: var(--section-padding);
    background: var(--bg-secondary);
    text-align: center;
}

.about-join h2 {
    margin-bottom: 2rem;
    color: var(--dark-color);
    font-size: 3rem;
    font-weight: 800;
    opacity: 0;
    transform: translateY(40px);
}

.about-join h2.animate {
    animation: fadeInUp 0.8s ease-out forwards;
}

.about-join > p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 4rem;
    line-height: 1.7;
    opacity: 0;
    transform: translateY(40px);
}

.about-join > p.animate {
    animation: fadeInUp 0.8s ease-out 0.2s forwards;
}

/* Job Openings */
.job-openings {
    margin: 4rem 0;
}

.job-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 2.5rem;
    margin-bottom: 4rem;
}

.job-card {
    background: var(--white-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 2.5rem;
    text-align: left;
    transition: var(--transition);
    box-shadow: var(--card-shadow);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(40px);
}

.job-card.animate {
    animation: fadeInUp 0.8s ease-out forwards;
}

.job-card:nth-child(2) { animation-delay: 0.1s; }
.job-card:nth-child(3) { animation-delay: 0.2s; }
.job-card:nth-child(4) { animation-delay: 0.3s; }
.job-card:nth-child(5) { animation-delay: 0.4s; }
.job-card:nth-child(6) { animation-delay: 0.5s; }

.job-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.job-card:hover::before {
    transform: scaleX(1);
}

.job-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-shadow-hover);
    border-color: var(--primary-color);
}

.job-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.job-header h3 {
    color: var(--dark-color);
    font-size: 1.4rem;
    font-weight: 700;
    margin: 0;
}

.job-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    background: var(--gradient-primary);
    color: var(--white-color);
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.job-content h4 {
    color: var(--dark-color);
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.job-requirements ul {
    list-style: none;
    margin-bottom: 2rem;
}

.job-requirements li {
    color: var(--text-muted);
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
}

.job-requirements li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.job-benefits p {
    color: var(--text-muted);
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: var(--border-radius);
    margin: 0;
    font-weight: 500;
}

/* Contact HR Section */
.contact-hr {
    background: var(--white-color);
    padding: 3rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--card-shadow);
    max-width: 600px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(40px);
}

.contact-hr.animate {
    animation: fadeInUp 0.8s ease-out forwards;
}

.contact-hr h3 {
    color: var(--dark-color);
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    font-weight: 700;
}

.contact-hr p {
    color: var(--text-muted);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.contact-hr a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.contact-hr a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.hr-qr {
    margin-top: 2rem;
    text-align: center;
}

.hr-qr img {
    width: 150px;
    height: 150px;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.hr-qr img:hover {
    transform: scale(1.05);
    box-shadow: var(--card-shadow-hover);
}

.hr-qr p {
    margin-top: 1rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        width: 85%;
        margin-left: auto;
        margin-right: auto;
    }
    
    .future-timeline::before {
        left: 20px;
    }
    
    .timeline-year {
        left: 20px;
        transform: translateX(0);
    }
}

@media (max-width: 768px) {
    .about-hero {
        padding: 6rem 0 4rem;
    }
    
    .about-hero h1 {
        font-size: 2.8rem;
    }
    
    .about-hero p {
        font-size: 1.1rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
        align-items: center;
    }
    
    .stat-item {
        width: 200px;
    }
    
    .mission-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .mission-item {
        min-width: auto;
    }
    
    .about-mission h2,
    .about-values h2,
    .about-advantages h2,
    .about-future h2,
    .about-join h2 {
        font-size: 2.2rem;
    }
    
    .advantages-grid,
    .values-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .job-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .job-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .contact-hr {
        padding: 2rem;
        margin: 0 1rem;
    }
    
    .hr-qr img {
        width: 120px;
        height: 120px;
    }
}

@media (max-width: 576px) {
    .about-hero {
        padding: 4rem 0 2rem;
    }
    
    .about-hero h1 {
        font-size: 2.2rem;
    }
    
    .about-hero p {
        font-size: 1rem;
    }
    
    .about-mission h2,
    .about-values h2,
    .about-advantages h2,
    .about-future h2,
    .about-join h2 {
        font-size: 1.8rem;
    }
    
    .advantage-item,
    .value-item {
        padding: 2rem 1.5rem;
    }
    
    .advantage-icon,
    .value-icon {
        width: 70px;
        height: 70px;
    }
    
    .advantage-icon i,
    .value-icon i {
        font-size: 1.8rem;
    }
    
    .job-card {
        padding: 2rem;
    }
    
    .job-header h3 {
        font-size: 1.2rem;
    }
    
    .contact-hr {
        padding: 1.5rem;
    }
    
    .hr-qr img {
        width: 100px;
        height: 100px;
    }
    
    .timeline-content {
        width: calc(100% - 80px);
        margin-left: 60px !important;
        margin-right: 0 !important;
    }
}