/* 容器 */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========== Split Section (About) - 比例 4:6 ========== */
.split-section {
    display: flex;
    flex-wrap: wrap;
    background: #14B5E1;
    min-height: 500px;
}

.split-content {
    flex: 4;
    /* 40% */
    padding: 60px;
    color: white;
}

.split-badge {
    background: #1A2F68;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
}

.split-badge-dot {
    width: 6px;
    height: 6px;
    background: white;
    border-radius: 50%;
}

.split-content h2 {
    font-size: 46px;
    font-weight: 700;
    color: #1A2F68;
    margin-bottom: 20px;
    line-height: 1.1;
}

.info-box {
    background: #f8f9fa;
    border-left: 5px solid #14B5E1;
    padding: 25px;
    margin: 20px 0;
    font-family: inherit;
    line-height: 1.6;
    color: #000;
}

.info-box p {
    margin-bottom: 15px;
    color: #333;
}

.info-box p:last-child {
    margin-bottom: 0;
}

.info-box strong {
    color: #14B5E1;
}

.btn-red {
    display: inline-block;
    background-color: #1A2F68;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    transition: background-color 0.2s;
}

.btn-red:hover {
    background-color: #8a191d;
}

.split-image {
    flex: 6;
    /* 60% */
    /* min-height: 400px; */
}

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

/* ========== Equipment Grid ========== */
.equipment-section {
    padding: 60px 0;
    background: #ffffff;
}

.equipment-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 20px;
}

.equipment-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #676767;
    margin-bottom: 12px;
    font-weight: 600;
}

.equipment-heading {
    font-size: 40px;
    font-weight: 700;
    color: #232323;
    margin: 0;
    line-height: 1.2;
}

.equipment-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    background-color: #14B5E1;
    color: #ffffff;
    text-decoration: none;
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 0.5px;
    border-radius: 4px;
    transition: all 0.3s ease;
    white-space: nowrap;
    border: none;
    cursor: pointer;
}

.equipment-btn:hover {
    background-color: #232323;
    transform: translateY(-2px);
}

.equipment-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.equipment-card {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 180px;
    background-color: #ffffff;
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    padding: 24px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.equipment-card:hover {
    transform: translateY(-4px);
    border-color: #cccccc;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.equipment-card-title {
    font-size: 16px;
    font-weight: 600;
    color: #232323;
    margin: 0;
    line-height: 1.4;
}

.equipment-card-icon {
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
    margin-top: auto;
}

.equipment-card-icon img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    opacity: 0.4;
    transition: opacity 0.3s ease;
}

.equipment-card:hover .equipment-card-icon img {
    opacity: 0.6;
}

/* 响应式 */
@media (max-width: 989px) {
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .category-card {
        height: 400px;
    }

    .card-title {
        font-size: 30px;
    }

    .split-content h2 {
        font-size: 42px;
    }

    .split-content {
        padding: 42px;
    }

    .split-content {
        flex: 1;
    }

    .split-image {
        flex: 1;
    }

    .equipment-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .equipment-heading {
        font-size: 32px;
    }

    .feature-item {
        padding: 0 15px;
    }

    .feature-text {
        font-size: 16px;
    }

    .hero-title,
    .hero-title-highlight {
        font-size: clamp(40px, 8vw, 70px);
    }
}

@media (max-width: 768px) {
    .hero-content {
        padding: 20px;
    }

    .hero-sub {
        font-size: 16px;
    }

    .hero-title,
    .hero-title-highlight {
        font-size: clamp(32px, 7vw, 50px);
    }

    .hero-title-highlight {
        padding: 6px 16px;
        margin-top: 8px;
    }

    .feature-grid {
        flex-direction: column;
    }

    .feature-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.2);
        padding: 15px 0;
    }

    .feature-item:last-child {
        border-bottom: none;
    }

    .category-grid {
        grid-template-columns: 1fr;
    }

    .category-card {
        height: 360px;
    }

    .card-title {
        font-size: 27px;
    }

    .split-section {
        flex-direction: column;
    }

    .split-content {
        padding: 40px 20px;
    }

    .split-content h2 {
        font-size: 32px;
    }

    .equipment-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .equipment-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .equipment-heading {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .equipment-grid {
        grid-template-columns: 1fr;
    }

    .card-title {
        font-size: 24px;
    }
}


/* video */
.fullscreen-video-section {
    position: relative;
    width: 100%;
    height: 80vh;
    overflow: hidden;
    background: #000;
}

.fullscreen-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
}

.video-overlay-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
    z-index: 10;
}

.video-overlay-layer.active {
    opacity: 1;
    visibility: visible;
}

.play-icon-large {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease;
}

.play-icon-large svg {
    width: 40px;
    height: 40px;
    fill: #14B5E1;
    margin-left: 5px;
}

.play-icon-large:hover {
    transform: scale(1.1);
}

/* 手机端适配 */
@media (max-width: 768px) {
    .fullscreen-video-section {
        height: 50vh;
    }

    .play-icon-large {
        width: 60px;
        height: 60px;
    }

    .play-icon-large svg {
        width: 30px;
        height: 30px;
    }
}