body {
    font-size: 18px;
    line-height: 2.2;
    letter-spacing: 0.05em;

    @media screen and (max-width: 800px) {
        font-size: clamp(12px, calc((15 / 375) * 100vw), 15px);
    }
}

main {
    margin-bottom: 270px;

    @media screen and (max-width: 800px) {
        margin-bottom: 116px;
    }
}

.container {
    margin-inline: auto;
    padding-inline: 30px;

    @media screen and (max-width: 800px) {
        padding-inline: calc((20 / 375) * 100vw);
    }
}

.color {
    color: #876C59;
}

.section-title {
    display: grid;
    gap: 10px;
    margin-bottom: 26px;

    .ja {
        font-size: 26px;
        line-height: 1.96;
        letter-spacing: 0.03em;

        @media screen and (max-width: 800px) {
            font-size: clamp(16px, calc((20 / 375) * 100vw), 20px);
        }
    }
}

.fv {
    margin-bottom: 115px;

    @media screen and (max-width: 800px) {
        margin-bottom: 50px;
    }

    .fv-inner {
        background-image: url('../img/concept/pc/fv.png');

        @media screen and (max-width: 800px) {
            background-image: url('../img/concept/sp/fv__sp.png');
        }

        .page-title {
            .en {
                @media screen and (max-width: 800px) {
                    width: 110px;
                }
            }
        }
    }
}

.kosume-jutsu {
    margin-bottom: 115px;

    @media screen and (max-width: 800px) {
        margin-bottom: 70px;
    }

    h3 {
        margin-bottom: 26px;
        text-align: center;
        font-size: 30px;
        line-height: 1.96;
        letter-spacing: 0.03em;

        @media screen and (max-width: 800px) {
            margin-bottom: 29px;
            font-size: clamp(16px, calc((20 / 375) * 100vw), 20px);
        }

        .mb {
            margin-bottom: -10px;
        }
    }

    .desc {
        max-width: 748px;
        margin-inline: auto;
    }
}

.lesson-image-section {
    margin-left: auto;
    padding-left: 30px;
    margin-bottom: 96px;

    @media screen and (max-width: 800px) {
        padding-left: 0;
        margin-bottom: 71px;
    }

    .flex {
        display: flex;
        justify-content: right;
        -moz-column-gap: 88px;
        column-gap: 88px;

        @media screen and (max-width: 800px) {
            flex-direction: column-reverse;
            row-gap: 39px;
        }

        .left-item {
            display: grid;
            gap: 82px;

            @media screen and (max-width: 800px) {
                padding-inline: 20px;
                gap: 42px;
            }

            .desc {
                max-width: 522px;

                @media screen and (max-width: 800px) {
                    max-width: none;
                    width: 100%;
                }
            }

            .one-on-one {
                .section-title {
                    @media screen and (max-width: 800px) {
                        margin-bottom: 33px;
                    }

                    .en {
                        width: 285px;

                        @media screen and (max-width: 800px) {
                            width: 160px;
                        }
                    }
                }
            }

            .make-tool {
                .section-title {
                    .en {
                        width: 245px;

                        @media screen and (max-width: 800px) {
                            width: 140px;
                        }
                    }

                }
            }
        }

        .image {
            width: calc((750 / 1512) * 100vw);
            max-width: 750px;
            min-width: 400px;

            @media screen and (min-width: 1513px) {
                max-width: none;
            }

            @media screen and (max-width: 800px) {
                min-width: auto;
                max-width: none;
                width: 100%;
            }
        }
    }
}

.make-contents {
    margin-right: auto;
    margin-bottom: 72px;
    padding-right: 30px;

    @media screen and (max-width: 800px) {
        padding-inline: 0;
        margin-bottom: 43px;
    }

    .flex {
        display: flex;
        justify-content: left;
        -moz-column-gap: 107px;
        column-gap: 107px;

        @media screen and (max-width: 800px) {
            flex-direction: column;
            row-gap: 33px;
        }

        .right-item {
            @media screen and (max-width: 800px) {
                padding-inline: 20px;
            }

            .section-title {
                gap: 20px;

                @media screen and (max-width: 800px) {
                    gap: 12px;
                }

                .en {
                    width: 365px;

                    @media screen and (max-width: 800px) {
                        width: 205px;
                    }
                }
            }

            .desc {
                max-width: 522px;

                @media screen and (max-width: 800px) {
                    max-width: none;
                }
            }
        }

        .image {
            width: calc((710 / 1512) * 100vw);
            max-width: 710px;
            min-width: 400px;

            @media screen and (min-width: 1513px) {
                max-width: none;
            }

            @media screen and (max-width: 800px) {
                width: 100%;
                max-width: none;
                min-width: auto;
            }
        }
    }
}