header {
    position: sticky;
    width: 100%;
    height: 80px;
    background: #fff;
    z-index: 9999;
    display: flex;
    justify-content: center;
    border-bottom: 1px solid #e4eae7;
}
header .header {
    width: 1200px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
header .header h1 {
    width: 100px;
}
header .header h1 a {
    width: 100%;
}
header .header h1 a img {
    width: 100%;
}
header .header nav {
    display: flex;
    gap: 100px;
}
header .header nav a {
    font-size: 20px;
    color: #739084;
}

main {
    padding: 60px 0 100px;
}
main section {
    display: flex;
    flex-flow: column nowrap;
    align-items: center;
}
main .s1,
main .s3 {
    max-width: 768px;
    margin: 0 auto;
}
main section h2 {
    font-size: 20px;
    margin-bottom: 20px;
    color: #fff;
    background: #00691c;
    padding: 10px 15px;
    border-radius: 50px;
}
main section p {
    font-size: 20px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 40px;
    text-align: center;
}
main section > img {
    width: 100%;
}
main .s2 {
    padding: 100px 0;
    background: #f7fcfa;
}
main .s3 {
    padding-top: 100px;
}
main section .menu {
    display: flex;
}
main .s1 {
    position: relative;
}
main .s1 .menu {
    position: absolute;
    bottom: -40px;
    background: #fff;
    box-shadow: 1px 1px 10px 1px rgba(0, 0, 0, 0.2);
    width: 80%;
    padding: 40px 0;
}
main .s1 .menu a {
    border-right: 1px solid #f4f8f6;
    width: calc(100% / 3);
    display: flex;
    flex-flow: column nowrap;
    justify-content: center;
    align-items: center;
    gap: 20px;
    text-align: center;
}
main .s1 .menu a:last-child {
    border: none;
}
main .s1 .menu a img {
    height: 30px;
}
main .s1 .menu a span {
    line-height: 1.7;
    font-weight: 600;
    font-size: 18px;
    color: #024527;
}
main .s2 h2 {
    background: #41af56;
}
main .s2 .menu {
    gap: 40px;
    width: 768px;
}
main .s2 .menu a {
    padding: 30px 30px;
    box-shadow: 1px 1px 10px 1px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    width: 50%;
    background: #fff;
}
main .s2 .menu a .image {
    width: 20%;
    border-right: 1px solid #ecf2ef;
    padding: 20px 20px 20px 0;
    margin-right: 20px;
}
main .s2 .menu a img {
    width: 100%;
}
main .s2 .menu a span {
    font-weight: 600;
    font-size: 18px;
    color: #024527;
}
main .s3 {}
main .s3 > h2 {
    background: #41af56;
}
main .s3 .menu {
    gap: 40px;
}
main .s3 .menu a {
    width: 50%;
    position: relative;
}
main .s3 .menu a > img {
    width: 100%;
}
main .s3 .menu a h3 {
    width: 100%;
    color: #fff;
    font-size: 20px;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: absolute;
    top: 40px;
    padding: 0 30px;
}
main .s3 .menu a h3 img {
    width: 30px;
}
#sub {
    max-width: 1200px;
    margin: 0 auto;
}
main > h2 {
    font-size: 24px;
    text-align: center;
    font-weight: 800;
    color: #7ecb68;
    margin-bottom: 40px;
}
main > pre {
    font-size: 18px;
    line-height: 1.4;
    text-align: center;
    color: #4d6a5d;
    width: 80%;
    margin: 0 auto 80px;
}
main > h3 {
    font-size: 20px;
    font-weight: 800;
    color: #399571;
    padding-top: 20px;
    margin-bottom: 20px;
    position: relative;
}
main > h3::before {
    content: '';
    background: #4c6a5c;
    display: inline-block;
    position: absolute;
    top: 0;
    left: 0;
    width: 30px;
    height: 3px;
}
main .box {
    padding: 30px 20px;
    background: #f8f8f8;
    margin-bottom: 60px;
}
main .box h4 {
    font-size: 18px;
    font-weight: 800;
    color: #7fcb69;
}
main .box pre {
    font-size: 18px;
    line-height: 1.4;
}
main .box pre em {
    font-size: 18px;
    font-weight: 800;
    color: #80cc6a;
    line-height: 1.4;
}
main .buttonWrap {
    display: flex;
    flex-flow: column nowrap;
    gap: 30px;
}
main .buttonWrap a {
    padding: 0 60px;
    height: 80px;
    border-radius: 50px;
    box-shadow: 1px 1px 10px 1px rgba(0, 0, 0, 0.2);
    background-image: url(../img/arrow-2.png);
    background-size: 30px;
    background-repeat: no-repeat;
    background-position: right 60px center;
    display: flex;
    align-items: center;
    gap: 10px;
}
main .buttonWrap a img {
    width: 30px;
}
main .buttonWrap a span {
    font-size: 18px;
    color: #779388;
}

@media screen and (max-width: 1200px) {
    header {
        padding: 0 1.5rem;
    }
    main {
        padding: 4rem 0 10rem;
    }
    #sub {
        padding: 4rem 1.5rem 10rem;
    }
    main > pre {
        width: 100%;
    }
}
@media screen and (max-width: 768px) {
    header {
        height: 6rem;
        border: none;
    }
    header .header h1 {
        width: 6rem;
    }
    header .header nav {
        gap: 2rem;
    }
    header .header nav a {
        font-size: 1.6rem;
    }
    main section h2 {
        font-size: 1.6rem;
        padding: 0.8rem 1.5rem;
    }
    main section p {
        font-size: 1.8rem;
        margin-bottom: 3rem;
    }
    main section > img {
        width: calc(100% - 3rem);
    }
    main .s1 .menu {
        padding: 2rem 0;
        bottom: -60px;
    }
    main .s1 .menu a {
        gap: 1.5rem;
    }
    main .s1 .menu a span {
        line-height: 1.4;
        font-size: 1.6rem;
    }
    main .s2 {
        padding: 12rem 8rem 6rem;
    }
    main .s2 .menu {
        display: flex;
        flex-flow: column nowrap;
        width: 100%;
    }
    main .s2 .menu a {
        width: 100%;
        padding: 4rem 1.5rem;
    }
    main .s2 .menu a span {
        font-size: 1.6rem;
        line-height: 1.4;
    }
    main .s2 .menu a .image {
        width: auto;
        padding: 1.5rem 1.5rem 1.5rem 0;
        margin-right: 1.5rem;
    }
    main .s2 .menu a .image img {
        width: 4rem;
    }
    main .s3 {
        padding: 6rem 1.5rem 0;
    }
    main .s3 .menu {
        gap: 1.5rem;
    }
    main .s3 .menu a h3 {
        top: 2rem;
        padding: 0 1.5rem;
        line-height: 1.2;
        font-size: 1.6rem;
    }
    main .buttonWrap a {
        padding: 0 2rem;
        background-position: right 2rem center;
    }
    main .buttonWrap a span {
        font-size: 1.6rem;
    }
}