html {
    font-size: 16px; /* базовая единица = 1rem */
}

div {
    font-size: 1.2rem; /* вместо 19px */
}

.preview .container .description {
    font-size: 2rem; /* 32px */
}



.preview {
    height: 320px;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;

    .container {
        display: flex;
        align-items: center;
        flex-direction: column;
        justify-content: center;
        text-align: center;
        gap: 30px;

        .title {
            width: 100%;
            font-weight: 550;
            font-size: 46px;
            color: var(--orange);
        }

        .description {
            width: 100%;
            font-weight: 350;
            font-size: 32px;
            color: var(--white);
        }
    }
}

.slogan {
    text-align: center;
    width: 100%;
    padding: 20px;
    font-size: 24px;
    color: var(--gray);
}

.main-content {
    margin-top: 70px;
    color: var(--black);
    word-spacing: 3px;
    font-size: 19px;
    line-height: 1.5;

    .container {
        div {
            word-spacing: 3px;
            font-size: 19px;
            line-height: 1.5;
        }

        ul {
            padding: 6px 0 10px 0;

            li {
                list-style-type: none;
                font-weight: 370;

                &::before {
                    padding: 0 5px;
                    content: '⚙';
                }
            }
        }

        .selected {
            border-bottom: 1px var(--gray) solid;
        }

        .title {
            margin-top: 40px;
            margin-bottom: 10px;
            font-weight: 500;

            &:hover {
                color: var(--metal);
            }

            &::before {
                content: '➤';
                color: var(--gray);
                padding-right: 10px;
            }
        }

        .smtitle {
            font-weight: 450;
        }

        .small-description {
            padding-bottom: 20px;
        }

        .our-production {
            width: 100%;
            display: flex;
            align-items: start;
            justify-content: space-between;
            gap: 30px;
            /*flex-wrap: wrap;*/

            img {
                border: 1px var(--metal) solid;
            }
        }

        .production-slogan {
            margin: 60px 0 70px 0;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 150px;

            .text {
                padding: 40px;
                text-align: center;
                font-size: 28px;
                font-weight: 350;
                color: var(--white);

                &:hover {
                    color: var(--orange);
                }
            }
        }

        .fixing-and-unique {
            width: 100%;
            display: grid;
            grid-template-columns: 6fr 4fr;
            gap: 50px;
            padding-bottom: 30px;
            margin-bottom: 70px;
            border-bottom: 1px var(--gray) solid;
            /*gap: 50px;*/

            img {
                justify-self: center;
                align-self: center;
                min-height: 250px;
                border: 1px var(--metal) solid;
            }
        }

        .photo-container {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            grid-template-rows: repeat(3, 1fr);
            gap: 20px;
            width: 100%;

            div {
                aspect-ratio: 1 / 0.7;
                width: 100%;
                height: 100%;
                background-size: cover;
                background-repeat: no-repeat;
                background-position: center;
            }

            .main-photo {
                grid-column: span 2;
                grid-row: span 2;
            }
        }


        .slideshow-container {
            width: auto;
            height: 50vh;
            max-height: 50vh;
            position: relative;
            overflow: hidden;
            margin: auto;
            display: flex;
            z-index: 0;
            align-items: center;
            justify-content: center;
            background-color: var(--metal);

            /* Hide the images by default */
            .mySlides {
                display: none;
            }

            .prev, .next {
                cursor: pointer;
                position: absolute;
                top: 50%;
                width: auto;
                margin-top: -22px;
                padding: 16px;
                color: white;
                font-weight: bold;
                font-size: 18px;
                transition: 0.6s ease;
                border-radius: 0 1.5px 1.5px 0;
                background-color: rgba(0, 0, 0, 0.4);
                user-select: none;

                &:hover, &:hover {
                    background-color: rgba(0,0,0,0.8);
                }
            }

            .next {
                right: 0;
                border-radius: 3px 0 0 3px;
            }

            .prev {
                left: 0;
            }

            .active {
                background-color: #717171;
            }

            .fade {
                animation-name: fade;
                animation-duration: 1.5s;
            }

            @keyframes fade {
                from {opacity: .4}
                to {opacity: 1}
            }
        }


        .certificates {
            margin: 100px 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 30px;

            .active-groud-title {
                width: 100%;
                max-width: calc(100% - 40px);
                padding: 20px;
                font-size: 20px;
                letter-spacing: 0.5px;
                font-weight: 450;
                display: flex;
                justify-content: space-between;
                align-items: start;
                border: 2px var(--metal) solid;

                .menu-icon {
                    width: 30px;
                }

                &:hover {
                    background-color: rgba(0, 0, 0, 0.1);
                    cursor: pointer;
                }
            }

            .photos {
                width: 100%;
                display: none;
                align-items: start;
                justify-content: space-between;
                flex-wrap: wrap;
                transition: display 1s ease;

                img {
                    max-width: 30%;
                    transition: opacity 0.5s ease;
                }
            }
        }

        .why-we {
            margin-bottom: 100px;

            ul {
                padding: 15px;

                li {
                    padding: 0 6px;

                    &::before {
                        padding-left: 12px;
                        content: '✅';
                    }
                }
            }
        }
    }
}

/* * {box-sizing:border-box} */



@media screen and (max-width: 875px) {
    .main-content .container .photo-container {
        gap: 5px;
    }
}

@media screen and (max-width: 700px) {
    .preview {
        .container {
            .description {
                font-size: 28px;
            }
        }
    }


    .main-content .container .photo-container {
        grid-template-rows: repeat(4, 1fr);

        .main-photo {
            grid-column: span 3;
        }

        div {
            aspect-ratio: 1 / 0.5;
        }

        div:last-of-type {
            grid-column: span 2;
        }
    }
}


@media screen and (max-width: 600px) {
    .preview {
        .container {
            .description {
                font-size: 24px;
            }
        }
    }
}

@media screen and (max-width: 525px) {
    .main-content .container .photo-container {
        grid-template-rows: repeat(4, 1fr);
        grid-template-columns: repeat(2, 1fr);

        .main-photo {
            grid-column: span 2;
        }

        div {
            aspect-ratio: 1 / 0.7;
        }

        div:last-of-type {
            grid-column: span 2;
        }
    }
}

@media screen and (max-width: 420px) {
    .preview {
        .container {
            .description {
                font-size: 18px;
            }
        }
    }
}