/* 关于页面样式 */
.about-page {
    padding: 8rem 0 4rem;
    min-height: 100vh;
}

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

.about-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    font-family: 'Orbitron', sans-serif;
    color: var(--light-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.about-header h1 i {
    color: var(--primary-color);
}

.about-subtitle {
    font-size: 1.125rem;
    color: var(--gray-light);
    max-width: 600px;
    margin: 0 auto;
}

/* 关于部分 */
.about-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 6rem;
}

@media (max-width: 768px) {
    .about-section {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

.about-content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--light-color);
}

.about-content p {
    font-size: 1.125rem;
    color: var(--gray-light);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.about-content p:last-child {
    margin-bottom: 0;
}

.image-frame {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
}

.image-frame img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    display: block;
}

/* 团队部分 */
.team-section {
    margin-bottom: 6rem;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.team-member {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 2rem;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    text-align: center;
}

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

.member-avatar {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2.5rem;
    color: white;
}

.member-name {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--light-color);
}

.member-role {
    font-size: 1rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 500;
}

.member-bio {
    color: var(--gray-light);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.member-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.skill-tag {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

/* 技术栈部分 */
.tech-section {
    margin-bottom: 6rem;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.tech-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 2rem;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    text-align: center;
}

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

.tech-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: white;
}

.tech-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--light-color);
}

.tech-card p {
    color: var(--gray-light);
    line-height: 1.7;
}

/* 时间线部分 */
.timeline-section {
    margin-bottom: 6rem;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 3rem auto 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
}

@media (min-width: 768px) {
    .timeline::before {
        left: 50%;
        transform: translateX(-50%);
    }
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 60px;
}

@media (min-width: 768px) {
    .timeline-item {
        width: 50%;
        padding-left: 0;
        padding-right: 60px;
    }

    .timeline-item:nth-child(odd) {
        margin-left: auto;
        padding-left: 60px;
        padding-right: 0;
    }
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 22px;
    top: 5px;
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    border-radius: 50%;
    border: 3px solid var(--darker-color);
    z-index: 1;
}

@media (min-width: 768px) {
    .timeline-item::before {
        left: auto;
        right: -8px;
    }

    .timeline-item:nth-child(odd)::before {
        right: auto;
        left: -8px;
    }
}

.timeline-date {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-family: 'Orbitron', sans-serif;
}

.timeline-content {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    backdrop-filter: blur(10px);
}

.timeline-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--light-color);
}

.timeline-content p {
    color: var(--gray-light);
    line-height: 1.7;
}

/* 联系部分 */
.contact-section {
    margin-bottom: 4rem;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
}

@media (max-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--light-color);
}

.contact-details p {
    color: var(--gray-light);
    line-height: 1.6;
    margin-bottom: 0.25rem;
}

.contact-details p:last-child {
    margin-bottom: 0;
}

.contact-form {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 2rem;
    backdrop-filter: blur(10px);
}

.contact-form h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--light-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(0, 0, 0, 0.08);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--light-color);
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-color);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.25rem;
    padding-right: 3rem;
}

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

.contact-form .btn {
    width: 100%;
    margin-top: 0.5rem;
}

/* 响应式设计 */
@media (max-width: 480px) {
    .about-header h1 {
        font-size: 2rem;
    }

    .about-content h2 {
        font-size: 1.75rem;
    }

    .team-grid,
    .tech-grid {
        grid-template-columns: 1fr;
    }

    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .contact-icon {
        margin: 0 auto;
    }
}