section {
    padding: 60px 0;
}

section h2 {
    position: relative;
    font-size: 40px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 50px;
}

section h2::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    transform: translate(-50%, -100%);
    width: 100%;
    height: 40px;
    background-image: url('../img/plain_icon.png');
    background-position: center center;
    background-repeat: no-repeat;
}

section h2 span {
    font-size: 0.6em;
}

section.mv-sec {
    height: 100vh;
    background-image: url('../img/piece.png'), url('../img/mv-bg.png');
    background-position: 0 0, center center;
    background-size: 100% 100%, cover;
    background-repeat: no-repeat, no-repeat;
    background-blend-mode: color-burn;
    padding-top: 32%;

}

section.mv-sec img[alt="piece-of-mv"] {
    bottom: 0;
    left: 0;
    width: 100%;
    mix-blend-mode: multiply;
    z-index: -1;
}


img[alt="mv-plain"] {
    width: 652px;
    height: auto;
    right: 10%;
    top: 118px;
    animation: UpDown 20s linear 0s infinite both
}

img[alt="letter"] {
    left: 10%;
    top: 5%;
    width: 714px;
}

section.mv-sec h4 {
    padding: 0 40px;
    font-size: 30px;
    font-weight: 700;
    text-align: center;
    position: relative;
    width: fit-content;
    margin: 0 auto;
    /* left: 50%; */
    /* bottom: 20%; */
    /* transform: translateX(-50%); */
    margin-bottom: 1em;
  line-height: inherit;
  z-index: 4;
}

section.mv-sec h4::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 14px;
    height: 100%;
    border: 1px solid #fff;
    border-right: none;


}

section.mv-sec h4::after {
    content: "";
    position: absolute;
    right: 0;
    top: 0;
    width: 14px;
    height: 100%;
    border: 1px solid #fff;
    border-left: none;


}

section.mv-sec p.clr-blue {
    font-size: 50px;
    font-weight: 700;
    text-align: center;
    /* left: 50%;
    bottom: 10%;
    transform: translateX(-50%); */
    /* display: flex; */
    /* align-items: flex-end; */
    line-height: 1.0;
    vertical-align: text-bottom;
    position: relative;
    z-index: 4;

}

section.mv-sec p.clr-blue * {
    line-height: 1;
}

section.mv-sec p.clr-blue .larger {
    font-size: 1.8em;
}

section.mv-sec .num-larger {
    font-size: 1.6em;
}

section.mv-sec .underline {
    border-top: 1px solid var(--clr-blue);
    border-bottom: 1px solid var(--clr-blue);
    font-size: 0.6em;
}

@media screen and (max-width: 1024px) {
    img[alt="letter"] {
        left: 10%;
        top: 95%;
        width: 60%;
    }

    section.mv-sec h4 {
        padding: 0 40px;
        font-size: 20px;
        font-weight: 700;
        text-align: center;
        position: relative;
        width: fit-content;
        margin: 0 auto;
        /* left: 50%; */
        /* bottom: 20%; */
        /* transform: translateX(-50%); */
        margin-bottom: 1em;
    }

    section.mv-sec {
        height: 100vh;
        background-image: url(../img/piece.png), url(../img/mv-bg.png);
        background-position: 0 0, center center;
        background-size: 100% 100%, cover;
        background-repeat: no-repeat, no-repeat;
        background-blend-mode: color-burn;
        padding-top: 24em;
    }

    section.mv-sec p.clr-blue {
        font-size: 42px;
    }

    img[alt="mv-plain"] {
        width: 80%;
        height: auto;
        right: 5%;
        top: 14%;
        animation: UpDown 20s linear 0s infinite both;
    }
}

/* ======================section marquee-sec ================== */
.marquee-sec {
    overflow-x: hidden !important;

}

.marquee-sec .swiper-wrapper {
    -webkit-transition-timing-function: linear !important;
    transition-timing-function: linear !important;
}




/* ========================section skydio==================== */
section.skydio-sec {
    background-image: url('../img/skydio-bg.png');
    background-position: 0 80%;
    background-size: 590px auto;
    background-repeat: no-repeat;
}

section.skydio-sec #advantage {
    column-gap: 3%;

}

section.skydio-sec #advantage div {
    width: 430px;
    height: 132px;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 1px solid #808080;
    text-align: center;
    margin-bottom: 40px;
}

section.skydio-sec h5 {
    text-align: center;
    font-size: 20px;
    margin-bottom: 2em;
}

section.skydio-sec h5+ol {
    display: block;
    width: 940px;
    margin: 0 auto;
}

section.skydio-sec h5+ol li:not(:last-child) {
    margin-bottom: 1em;
}

section.skydio-sec h5+ol li {
    line-height: 1.8;
  margin-left: 1.5em;
}

section.skydio-sec h5+ol li:not(:last-child) ul {
  margin: 1em 0;
}
section.skydio-sec h5+ol li:not(:last-child) li:not(:last-child) {
    margin-bottom: 0;
}

@media screen and (max-width: 1024px) {
    section.skydio-sec #advantage {
        column-gap: 3%;
        flex-wrap: wrap;
        row-gap: 1rem;
        margin-bottom: 2em;
    }

    section.skydio-sec #advantage div {
        margin-bottom: 0;
    }

    section.skydio-sec h5+ol {
        display: block;
        width: 100%;
        margin: 0 auto;
    }

    section.skydio-sec {
        background-image: url(../img/skydio-bg.png);
        background-position: 0 50%;
        background-size: 310px auto;
        background-repeat: no-repeat;
    }


}

/* =======================section license ======================== */
section.license-sec {}

section.license-sec h3 {
    font-size: 30px;
    text-align: center;
    font-weight: 700;
    margin-bottom: 7rem;
}

.lists-license {
    counter-reset: my-awesome-list;
}

.lists-license li {
    margin-top: 3em;
    position: relative;
    padding-left: 60px;
    counter-increment: my-awesome-list;

}

.lists-license li:not(:last-child) {
    margin-bottom: -22px;
}

.lists-license li:before {
    content: counter(my-awesome-list, decimal-leading-zero);
    position: absolute;
    height: 40px;
    aspect-ratio: 1/1;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    background-color: #1F365B;
    left: 0;
    top: 50%;
    transform: translateY(-50%);

}

img[alt="skydio-license"] {
    display: block;

    width: 300px;
    margin: 4em auto 0;
}

img[alt="license"] {
    width: 686px;
    float: right;
}

@media screen and (max-width: 1024px) {
    section.license-sec h3 {
        font-size: 18px;
        text-align: center;
        font-weight: 700;
        margin-bottom: 4rem;
    }

    img[alt="license"] {
        width: 100%;
    }

    .lists-license li:before {
        content: counter(my-awesome-list, decimal-leading-zero);
        position: absolute;
        height: 50px;
        aspect-ratio: 1/1;
        display: flex;
        justify-content: center;
        align-items: center;
        color: #fff;
        background-color: #1F365B;
        left: 0;
        top: 50%;
        transform: translateY(-50%);
    }

    .lists-license li {
        margin-top: 3em;
        position: relative;
        padding-left: 60px;
        counter-increment: my-awesome-list;
        font-size: 14px;
    }

    img[alt="skydio-license"] {
        display: block;
        width: 100%;
        margin: 3rem 0 0;
    }
}

/* ========================== curriculum-sec ================== */
.curriculum-sec {}

.curriculum-sec>.container>.flex {
    column-gap: 6%;
    background-color: #121214;
    padding: 20px 30px;
}

.curriculum-sec .curri-info {
    width: 50%;
    flex: 0 0 auto;
    line-height: 1.8em;
}

.curriculum-sec .caution {
    margin-top: 10px;
    padding: 24px 26px;
    width: 100%;
    border: 1px solid #808080;
}

.curri-info a {
    display: inline-block;
    width: 100%;
    line-height: 3;
    text-align: center;
    font-size: 20px;
    font-weight: 700;
    background-color: var(--clr-blue);
    color: #fff;
    margin: 10px 0;
}


.timeline-container {

    width: 50%;
    margin: auto;
    display: block;
    position: relative;
}

.timeline-container ul.tl {
    margin: 35px 0 -13px;
    padding: 0;
    display: inline-block;
    width: 100%;

}

.timeline-container ul.tl li {
    list-style: none;
    margin: auto;
    min-height: 50px;
    border-left: 4px solid var(--clr-blue);
    padding: 0 0 50px 30px;
    position: relative;
    display: grid;
    grid-template-columns: 52% minmax(0, 1fr);
}

.timeline-container ul.tl li.dashed {
    border-left: 1px dashed #86D6FF;
}

.timeline-container ul.tl li:last-child {
    border-left: 0;
}

.timeline-container ul.tl li .item-icon {
    position: absolute;
    left: -12px;
    top: 0;
    content: " ";
    /* border: 8px solid rgba(255, 255, 255, 0.74); */
    border-radius: 500%;
    background: var(--clr-blue);
    width: 20px;
    aspect-ratio: 1/1;
}

.timeline-container ul.tl li:last-child .item-icon {
    left: -9px;
}

.timeline-container ul.tl li .item-icon::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 200%;
    aspect-ratio: 1/1;
    border-radius: 50%;
    border: 1px solid #808080;
}

.timeline-container ul.tl li:hover::before {
    border-color: #258CC7;
    transition: all 1000ms ease-in-out;
}

ul.tl li .item-text {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

ul.tl li .item-title {}

ul.tl li .item-detail {
    color: rgba(0, 0, 0, 0.5);
    font-size: 12px;
}

ul.tl li .item-timestamp {


    padding-left: 20px;
}

@media screen and (max-width: 1024px) {
    .curriculum-sec>.container>.flex {
        column-gap: 6%;
        background-color: #121214;
        padding: 20px 30px;
        flex-wrap: wrap;
    }

    .curriculum-sec .curri-info {
        width: 100%;
        flex: 0 0 auto;
        line-height: 1.8em;
    }

    .timeline-container {
        width: 100%;
        margin: auto;
        display: block;
        position: relative;
        margin-top: 2em;
    }
}

/* ========================flow-sec======================== */
.flow-sec {}

.lists-flow {
    display: flex;
    justify-content: space-between;
    counter-reset: my-awesome-list-1;
    position: relative;
}

.lists-flow::before {
    position: absolute;
    content: "";
    width: 100%;
    height: 3px;
    background-color: #808080;
    top: 50%;
    left: 0;
}

.lists-flow li {
    width: calc((100% - 40px) / 5);
    background-color: #121214;
    aspect-ratio: 220/243;
    padding-top: 10em;
    text-align: center;
    line-height: 2em;
    counter-increment: my-awesome-list-1;
    position: relative;
}

.lists-flow li::before {
    content: counter(my-awesome-list-1, decimal-leading-zero);
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translate(-50%, 0);
    width: 54px;
    aspect-ratio: 1/1;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #1F365B;
    color: #fff;
}

.lists-flow li span {
    display: flex;
    width: 100%;
    height: 50%;
    justify-content: center;
    align-items: center;
}

@media screen and (max-width: 1024px) {
    .lists-flow {
        display: flex;
        justify-content: space-evenly;
        counter-reset: my-awesome-list-1;
        position: relative;
        flex-wrap: wrap;
        row-gap: 2rem;
    }

    .lists-flow li {
        width: 80%;
        background-color: #121214;
        aspect-ratio: 220/243;
        padding-top: 10em;
        text-align: center;
        line-height: 2em;
        counter-increment: my-awesome-list-1;
        position: relative;
    }

    .lists-flow::before {
        position: absolute;
        content: "";
        width: 3px;
        height: 100%;
        background-color: #808080;
        top: 0;
        left: 50%;
    }
}

/* ======================== course-sec ======================== */

.course-sec {}

.course-sec .container>div.flex {
    column-gap: 5%;
}

.course-sec img[alt="decoration"] {
    width: 390px;
    display: block;
    margin: 0 auto;
    margin-bottom: 1em;
}

.course-sec .decoration p {
    font-size: 20px;
    text-align: center;
    line-height: 1.6em;
}

.course-money {
    font-size: 20px;
}

.course-money>a {
    margin: 20px 0;
}

.course-money .smaller {
    font-size: 0.6em;
}

.contact-sec h2~p {
    margin-bottom: 1.2em;
}

.contact-sec h2+p+p {
    margin-bottom: 2em;
}

@media screen and (max-width: 1024px) {
    .course-sec .container>div.flex {
        column-gap: 5%;
        flex-wrap: wrap;
    }

    .course-sec img[alt="decoration"] {
        width: 80%;
        display: block;
        margin: 0 auto;
        margin-bottom: 1em;
    }

    .course-sec .decoration p {
        font-size: 16px;
        text-align: center;
        line-height: 1.6em;
    }

    .course-money>a>img {
        width: 100%;
    }
}

/* /////////////////// contact-sec\\\\\\\\\\\\\\\\\\\\\\\\\\\ */
.contact-sec form>div.flex {
    column-gap: 5%;
}

.contact-sec form>div.flex>div {
    width: 48%;
}

.contact-sec form>div.flex>div>div.form-input:not(:last-child) {
    margin-bottom: 1.2em;
}

.contact-sec form label {
    display: inline-block;
    margin-bottom: 1.2em;
}

input[type="submit"] {
    margin-top: 2em;
    display: inline-block;
    padding: 20px 0;
    text-align: center;
    width: 100%;
    background-color: #1F365B !important;
    color: #fff;
    border-radius: 6px;
    box-shadow: 0 2px 0 #041634;
    border: none !important;
    font-size: 18px;
    letter-spacing: 0.2em;
    cursor: pointer;
}

img[alt="body-bg-plain"] {
    right: 0;
    bottom: 4%;
    width: 646px;
    z-index: -1;
}

@media screen and (max-width: 1024px) {
    .contact-sec form>div.flex {
        column-gap: 5%;
        flex-wrap: wrap;
        row-gap: 2em;
    }

    .contact-sec form>div.flex>div {
        width: 88%;
    }

    img[alt="body-bg-plain"] {
        right: 0;
        bottom: 5%;
        width: 196px;
        z-index: -1;
    }
}
.pc-contact-btn {
  z-index: 1;
}