.product-tabs__nav {
    flex-wrap: wrap;
}

.product-tabs__count {
    display: inline-block;
    margin-left: 4px;
    color: #5b5b5b;
    font-size: .72em;
    font-weight: 500;
    vertical-align: baseline;
}

.installation-guide__overview {
    max-width: 900px;
    margin: 28px 0;
    padding: 18px 20px;
    border-left: 4px solid #00963b;
    background: #f6faf7;
    line-height: 1.6;
}

.installation-guide__overview h2 {
    margin-top: 0;
}

.installation-guide__overview p:last-child {
    margin-bottom: 0;
}

.installation-guide__notice {
    max-width: 900px;
    padding: 16px 20px;
    border-left: 4px solid #00963b;
    background: #f1f8f3;
    line-height: 1.55;
}

.installation-guide__images-hint {
    margin: 16px 0 4px;
    color: #526158;
    font-size: 14px;
}

.installation-guide__video {
    position: relative;
    width: 100%;
    max-width: 640px;
    margin: 16px 0 24px;
}

.installation-guide__video iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.installation-guide__steps {
    max-width: 1000px;
    margin: 16px 0 38px;
}

.installation-guide__step {
    padding: 18px 0;
    border-bottom: 1px solid #e7ebe8;
}

.installation-guide__step-text {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    max-width: 900px;
    margin: 0;
    line-height: 1.6;
}

.installation-guide__step-body {
    flex: 1 1 auto;
    min-width: 0;
}

.installation-guide__step-number {
    display: inline-flex;
    flex: 0 0 30px;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: #008d39;
    color: #fff;
    font-weight: 700;
    line-height: 1;
}

.installation-guide__step > p:not(.installation-guide__step-text) {
    margin: 12px 0 0 42px;
    line-height: 1.6;
}

.installation-guide__step h3 {
    margin: 20px 0 8px 42px;
    font-size: 19px;
}

.installation-guide__images {
    max-width: 1000px;
}

.installation-guide__images summary {
    cursor: pointer;
    list-style: none;
}

.installation-guide__images summary::-webkit-details-marker {
    display: none;
}

.installation-guide__photo-control {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    justify-content: center;
    gap: 3px;
    min-width: 48px;
    height: 30px;
    padding: 0 6px;
    border: 1px solid #b8dec4;
    border-radius: 15px;
    background: #f1f9f3;
    color: #087a35;
    transition: background-color .15s, border-color .15s;
}

.installation-guide__images summary:hover .installation-guide__photo-control,
.installation-guide__images[open] .installation-guide__photo-control {
    border-color: #80bf95;
    background: #e5f5e9;
}

.installation-guide__photo-icon {
    display: block;
    width: 18px;
    height: 18px;
    background: url('/style/image/install-guide-camera.svg') center / contain no-repeat;
}

.installation-guide__photo-count {
    font-size: 13px;
    font-weight: 700;
    line-height: 1;
}

.installation-guide__sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.installation-guide__images summary:focus-visible,
.installation-guide__figure a:focus-visible {
    outline: 2px solid #007b30;
    outline-offset: 3px;
}

.installation-guide__image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 180px), 1fr));
    gap: 12px;
    margin: 14px 0 0 40px;
}

.installation-guide__figure {
    margin: 0;
}

.installation-guide__figure a {
    display: block;
    height: 160px;
    padding: 6px;
    border: 1px solid #e3e7e4;
    border-radius: 6px;
    background: #fff;
    cursor: zoom-in;
}

.installation-guide__figure img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.installation-guide__precautions-button {
    margin: 4px 0 20px;
    padding: 0;
    border: 0;
    background: none;
    color: #007b30;
    font: inherit;
    text-decoration: underline;
    cursor: pointer;
}

.installation-guide__precautions-button:hover,
.installation-guide__precautions-button:focus-visible {
    background: transparent;
    color: #005b26;
}

.installation-guide__precautions-button:focus-visible {
    outline: 2px solid #007b30;
    outline-offset: 3px;
}

.installation-guide__dialog {
    width: min(760px, calc(100% - 32px));
    max-height: min(80vh, 900px);
    padding: 24px;
    border: 0;
    border-radius: 12px;
    box-shadow: 0 20px 60px #0003;
}

.installation-guide__dialog::backdrop {
    background: #0008;
}

.installation-guide__dialog-head {
    position: relative;
    min-height: 32px;
    padding-right: 44px;
}

.installation-guide__dialog-head h2 {
    margin: 0 0 20px;
    font-size: 24px;
}

.installation-guide__dialog-head button {
    position: absolute;
    top: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: 0;
    background: transparent;
    color: #333;
    font-size: 30px;
    line-height: 1;
    cursor: pointer;
}

.installation-guide__dialog-content {
    line-height: 1.6;
}

.installation-guide__dialog-content h3 {
    margin: 20px 0 10px;
    font-size: 19px;
}

.installation-guide__viewer {
    width: min(1100px, calc(100% - 24px));
    max-width: none;
    max-height: 92vh;
    padding: 12px;
    border: 0;
    border-radius: 10px;
    box-shadow: 0 20px 60px #0008;
}

.installation-guide__viewer::backdrop {
    background: #000b;
}

.installation-guide__viewer-head,
.installation-guide__viewer-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.installation-guide__viewer-head {
    margin-bottom: 8px;
    font-weight: 600;
}

.installation-guide__viewer button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    min-height: 36px;
    padding: 0;
    border: 1px solid #dce5df;
    border-radius: 6px;
    background: #fff;
    color: #203029;
    font-size: 26px;
    font-weight: 600;
    line-height: 1;
    cursor: pointer;
}

.installation-guide__viewer button:hover:not(:disabled),
.installation-guide__viewer button:focus-visible {
    border-color: #8cbd9b;
    background: #edf7ef;
    color: #075c2c;
}

.installation-guide__viewer button:focus-visible {
    outline: 2px solid #087a35;
    outline-offset: 2px;
}

.installation-guide__viewer button:disabled {
    opacity: .55;
    cursor: default;
}

.installation-guide__viewer img {
    display: block;
    max-width: 100%;
    max-height: calc(92vh - 130px);
    margin: 0 auto;
    object-fit: contain;
}

.installation-guide__viewer-controls {
    justify-content: center;
    margin-top: 8px;
}

@media (max-width: 480px) {
    .installation-guide__image-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .installation-guide__step > p:not(.installation-guide__step-text),
    .installation-guide__step h3,
    .installation-guide__image-grid {
        margin-left: 0;
    }
}