.cloudqingnet-hero {
    position: relative;
    width: 100%;
    height: calc(100vh - 65px);
    min-height: 480px;
    overflow: hidden;
    background: #eef5ff;
}

.cloudqingnet-hero__media {
    position: absolute;
    z-index: 0;
    inset: 0;
    overflow: hidden;
    background: #eef5ff;
}

.cloudqingnet-hero__video {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    pointer-events: none;
    transition: opacity 760ms cubic-bezier(0.16, 1, 0.3, 1);
}

.cloudqingnet-hero__video.is-active {
    opacity: 1;
}

.cloudqingnet-hero__inner {
    position: relative;
    z-index: 1;
    width: min(1460px, 100%);
    height: 100%;
    margin: 0 auto;
}

.cloudqingnet-hero__switcher {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    display: flex;
    width: 220px;
    flex-direction: column;
    justify-content: center;
    padding: 32px 0;
    box-sizing: border-box;
    border-right: 1px solid rgba(17, 24, 39, 0.12);
}

.cloudqingnet-hero__option {
    display: flex;
    width: 100%;
    min-height: 64px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 2px;
    padding: 10px 18px;
    box-sizing: border-box;
    color: #1f2937;
    text-align: left;
    background: transparent;
    border: 0;
    border-right: 1px solid transparent;
    cursor: pointer;
    transition: color 260ms ease, border-color 260ms ease, background-color 260ms ease;
}

.cloudqingnet-hero__option:hover,
.cloudqingnet-hero__option:focus-visible {
    color: #1677ff;
    background: rgba(255, 255, 255, 0.24);
}

.cloudqingnet-hero__option.is-active {
    color: #1677ff;
    border-right-color: #1677ff;
}

.cloudqingnet-hero__option:focus-visible {
    outline: 2px solid #1677ff;
    outline-offset: -2px;
}

.cloudqingnet-hero__title {
    font-size: 14px;
    line-height: 1.5;
}

.cloudqingnet-hero__subtitle {
    font-size: 13px;
    line-height: 1.5;
    color: #4b5563;
}

.cloudqingnet-hero__option.is-active .cloudqingnet-hero__subtitle,
.cloudqingnet-hero__option:hover .cloudqingnet-hero__subtitle,
.cloudqingnet-hero__option:focus-visible .cloudqingnet-hero__subtitle {
    color: #1677ff;
}

.cloudqingnet-hero__copy {
    position: absolute;
    top: 50%;
    left: 256px;
    width: min(620px, calc(100% - 300px));
    transform: translateY(-50%);
    color: #111827;
    transition: opacity 280ms ease, transform 280ms ease;
}

.cloudqingnet-hero__copy.is-switching {
    opacity: 0;
    transform: translateY(calc(-50% + 8px));
}

.cloudqingnet-hero__heading {
    margin: 0 0 12px;
    font-size: 44px;
    font-weight: 400;
    line-height: 1.2;
}

.cloudqingnet-hero__description {
    max-width: 620px;
    margin: 0;
    color: #1f2937;
    font-size: 14px;
    line-height: 1.7;
}

@media (max-width: 1100px) {
    .cloudqingnet-hero__inner {
        padding: 0 24px;
        box-sizing: border-box;
    }

    .cloudqingnet-hero__switcher {
        left: 24px;
    }

    .cloudqingnet-hero__copy {
        left: 280px;
        width: min(560px, calc(100% - 304px));
    }
}

@media (max-width: 768px) {
    .cloudqingnet-hero {
        min-height: 560px;
    }

    .cloudqingnet-hero__inner {
        padding: 0 16px;
    }

    .cloudqingnet-hero__switcher {
        top: auto;
        right: 16px;
        bottom: 16px;
        left: 16px;
        width: auto;
        padding: 0;
        border-right: 0;
    }

    .cloudqingnet-hero__option {
        min-height: 52px;
        padding: 8px 12px;
        background: rgba(255, 255, 255, 0.78);
        border-right: 0;
        border-bottom: 1px solid rgba(17, 24, 39, 0.1);
    }

    .cloudqingnet-hero__option:last-child {
        border-bottom: 0;
    }

    .cloudqingnet-hero__option.is-active {
        border-right: 0;
        border-left: 2px solid #1677ff;
    }

    .cloudqingnet-hero__copy {
        top: 32px;
        right: 16px;
        left: 16px;
        width: auto;
        transform: none;
    }

    .cloudqingnet-hero__copy.is-switching {
        transform: translateY(8px);
    }

    .cloudqingnet-hero__heading {
        margin-bottom: 8px;
        font-size: 32px;
    }

    .cloudqingnet-hero__description {
        font-size: 13px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .cloudqingnet-hero__video,
    .cloudqingnet-hero__option,
    .cloudqingnet-hero__copy {
        transition: none;
    }
}