.about-hero {
    background-image: url('../images/about-hero-bg.jpg');
    background-size: cover;
    background-position: center;
    position: relative;
}

.about-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

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

.play-video-btn {
    background: transparent;
    border: none;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 2rem;
    opacity: .6;
}

.play-video-btn:hover {
    transform: scale(1.1);
}

.play-video-btn .icon {
    width: auto;
    height: auto;
    filter: drop-shadow(0 0 10px rgba(0, 0, 0, 0.5));
}

.play-video-btn .icon i {
    font-size: 80px;
}

/* Video Modal */
.modal-content {
    width: 80%;
    max-width: 800px;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    background: #000;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* ===== 企业简介 ===== */
.company-intro {
    padding: 3rem 1.5rem;
}

.company-title {
    font-size: 1.8rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.5rem;
    position: relative;
}

.title-underline {
    width: 50px;
    height: 3px;
    background-color: var(--primary-color);
    margin-bottom: 1.5rem;
    margin-left: 0px;
}

.title-underline.mx-auto {
    margin-left: auto;
    margin-right: auto;
}

.company-description {
    color: #555;
    line-height: 1.8;
}

.company-description p {
    margin-bottom: 1rem;
    text-align: left;
}

.company-logo-large {
    max-width: 350px;
    margin: 0 auto;
}

/* ===== 数字统计 ===== */
.company-stats {
    padding: 3rem 1.5rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    text-align: center;
}

.stat-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    width: auto;
    height: auto;
}

.stat-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.stat-number-container {
    display: flex;
    align-items: baseline;
    justify-content: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: #333;
    line-height: 1;
}

.stat-plus, .stat-percent {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
    line-height: 1;
}

.stat-label {
    color: #666;
    font-size: 1rem;
    margin-top: 0.25rem;
    text-align: center;
}

/* ===== 发展历程 ===== */
.development-history {
    padding: 4rem 1.5rem;
    background: linear-gradient(to bottom, #e6f2ff, #ffffff);
    position: relative;
}

.development-history .title {
    margin-bottom: 2.5rem;
    color: #333;
    font-weight: 600;
}

/* 轮播容器 */
.history-carousel {
    position: relative;
    margin: 2rem auto 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 0;
}

.history-carousel-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    padding: 0;
}

/* 轮播轨道 */
.history-track {
    display: flex;
    transition: transform 0.5s ease;
    width: 100%;
}

/* 轮播项目 */
.history-item {
    flex: 0 0 25%;
    min-width: 25%;
    padding: 0 10px;
    box-sizing: border-box;
}

@media screen and (max-width: 1023px) {
    .history-item {
        flex: 0 0 33.333%;
        min-width: 33.333%;
    }

    .team-member {
        flex: 0 0 calc(33.333% - 2rem);
        max-width: calc(33.333% - 2rem);
    }
}

@media screen and (max-width: 768px) {
    .history-item {
        flex: 0 0 50%;
        min-width: 50%;
    }
}

@media screen and (max-width: 480px) {
    .history-item {
        flex: 0 0 100%;
        min-width: 100%;
    }
}

/* 历史卡片 */
.history-card {
    background-color: transparent;
    border-left: 2px solid #e0e0e0;
    overflow: hidden;
    margin-bottom: 2rem;
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: 0 15px 0 20px;
}

.history-year {
    color: #0099ff;
    font-size: 1.25rem;
    font-weight: bold;
    padding: 0.5rem 0 0.5rem 10px;
    text-align: left;
    margin-bottom: 0.75rem;
    border-left: 2px solid #0099ff;
    margin-left: -20px;
}

.history-image {
    width: 100%;
    height: 180px;
    overflow: hidden;
    border: 1px solid #f0f0f0;
}

.history-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.history-content {
    padding: 1rem 0;
    flex-grow: 1;
}

.history-content p {
    color: #555;
    margin: 0;
    line-height: 1.6;
    font-size: 0.9rem;
}

/* 轮播导航 */
.history-prev,
.history-next {
    background-color: rgba(255, 255, 255, 0.8);
    color: #0099ff;
    border: 1px solid #e0e0e0;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 0 15px;
    z-index: 10;
    position: absolute;
}

.history-prev {
    left: 0;
}

.history-next {
    right: 0;
}

.history-prev:hover,
.history-next:hover {
    background-color: #0099ff;
    color: white;
}

.history-dots {
    display: flex;
    justify-content: center;
    margin-top: 1.5rem;
}

.history-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: #ccc;
    margin: 0 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.history-dot.active {
    background-color: #0099ff;
}

/* ===== 战略团队 ===== */
.strategic-team {
    padding: 4rem 1.5rem;
    background-color: #f9f9f9;
}

.strategic-team .title-underline {
    width: 50px;
    height: 3px;
    background-color: var(--primary-color);
    margin-bottom: 3rem;
}

.team-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
}

.team-member {
    flex: 0 0 calc(25% - 2rem);
    max-width: calc(25% - 2rem);
}

.member-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    border: 1px solid #e0e0e0;
    cursor: pointer;
}

.member-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 153, 255, 0.15);
    border: 1px solid rgba(0, 153, 255, 0.3);
}

.member-photo {
    position: relative;
    overflow: hidden;
    height: 280px;
}

.member-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.member-card:hover .member-photo img {
    transform: scale(1.05);
}

.member-info {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.member-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.5rem;
}

.member-position {
    color: #0099ff;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.member-bio {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.6;
    flex-grow: 1;
}

/* Responsive styles */
@media screen and (max-width: 768px) {
    .about-hero-content .title {
        font-size: 2rem;
    }

    .about-hero-content .subtitle {
        font-size: 1rem;
    }

    .play-video-btn .icon i {
        font-size: 2.5rem;
    }

    .company-title {
        font-size: 1.5rem;
    }

    .company-logo-large {
        max-width: 250px;
        margin-top: 2rem;
    }

    .stat-item {
        margin-bottom: 1.5rem;
    }

    .stat-number, .stat-plus, .stat-percent {
        font-size: 2rem;
    }

    .stat-icon {
        font-size: 2rem;
    }

    .history-year {
        font-size: 1.1rem;
    }

    .history-image {
        height: 150px;
    }

    .history-content {
        padding: 0.75rem 0;
    }

    .history-content p {
        font-size: 0.85rem;
    }

    .history-carousel-container {
        padding: 0 30px;
    }

    .history-prev,
    .history-next {
        width: 30px;
        height: 30px;
        margin: 0;
        font-size: 0.8rem;
    }

    .history-prev {
        left: 0;
    }

    .history-next {
        right: 0;
    }

    .history-dots {
        margin-top: 0.5rem;
    }

    .history-card {
        padding: 0 10px 0 15px;
    }

    .team-member {
        flex: 0 0 calc(50% - 1.5rem);
        max-width: calc(50% - 1.5rem);
    }

    .member-photo {
        height: 250px;
    }

    .member-name {
        font-size: 1.1rem;
    }

    .member-position {
        font-size: 0.85rem;
    }

    .member-bio {
        font-size: 0.85rem;
    }
}

@media screen and (max-width: 480px) {
    .team-member {
        flex: 0 0 100%;
        max-width: 100%;
    }
}