@charset "UTF-8";
/* CSS Document */
/* ------------------------------------- /
/   共通
/* ------------------------------------- */
.sp1300,.sp800,.sp600,.sp500,.sp400 {
    display: none;
}
@media (max-width: 1300px) {
    .sp1300 {
        display: block;
    }
    .pc1300 {
        display: none;
    }
}
@media (max-width: 800px) {
    .sp800 {
        display: block;
    }
    .pc800 {
        display: none;
    }
}
@media (max-width: 600px) {
    .sp600 {
        display: block;
    }
}
@media (max-width: 500px) {
    .sp500 {
        display: block;
    }
}
@media (max-width: 400px) {
    .sp400 {
        display: block;
    }
}
.iv_inner{
    width: 88.5%;
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    font-family: "Noto Serif JP", serif;
    font-weight: 500;
}
.iv_cross {
    position: absolute;
}
.iv_cross::before {
    content: '';
    position: absolute;
    width: 26px;
    height: 26px;
    mask-image: url(../img/invisalign/cross.svg);
    -webkit-mask-image: url(../img/invisalign/cross.svg);
    mask-repeat: no-repeat;
    -webkit-mask-repeat: no-repeat;
    mask-size: cover;
    -webkit-mask-size: cover;
    background-color: #9F8326;
    transform: translateX(-13px);
    pointer-events: none
}
.iv_big::before {
    width: 40px;
    height: 40px;
}
body {
    color: #292929;
    line-height: 2.0;
}
section[class^="iv_"] h2 {
    /* font-size: 4.6rem; */
    font-size: clamp(2.2rem, 1.355rem + 2.7vw, 4.6rem);
    color: #015D39;
    font-weight: 600;
    text-align: center;
}
h2 > span.iv_sub_ttl {
    /* font-size: 3.0rem; */
    font-size: clamp(1.8rem, 1.377rem + 1.35vw, 3rem);
    color: #9F8326;
    font-weight: 500;
    display: block;
    margin-bottom: 25px;
    font-family: "Cormorant Infant", serif;
    font-weight: 500;
}
h2 + .iv_cross {
    display: block;
    width: 1px;
    height: 1px;
    position: relative;
    margin: 21px auto 70px;
}
@media (max-width: 1200px) {
    .iv_cross::before {
        width: 20px;
        height: 20px;
        transform: translateX(-10px);
    }
    .iv_big::before {
        width: 30px;
        height: 30px;
        transform: translateX(-15px);
    }
    h2 > span.iv_sub_ttl {
        margin-bottom: 20px;
    }
    h2 + .iv_cross {
        margin: 21px auto 60px;
    }
}
@media (max-width: 1000px) {
    h2 > span.iv_sub_ttl {
        margin-bottom: 15px;
    }
    h2 + .iv_cross {
        margin: 18px auto 50px;
    }
}
@media (max-width: 800px) {
    h2 > span.iv_sub_ttl {
        margin-bottom: 10px;
    }
    h2 + .iv_cross {
        margin: 15px auto 40px;
    }
}
@media (max-width: 600px) {
    h2 > span.iv_sub_ttl {
        margin-bottom: 5px;
    }
    h2 + .iv_cross {
        margin: 12px auto 30px;
    }
}
/* ----------------------------------------------------------------------------
/  iv_top
/ ---------------------------------------------------------------------------- */
.iv_top {
    background-image: url(../img/invisalign/top.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    /* height: 860px; */
    background-position: top center;
}
.iv_top h1 {
    padding-top: 198px;
    color: #9F8326;
    /* font-size: 8.5rem; */
    font-size: clamp(3.5rem, 3.045rem + 2.91vw, 8.5rem);
}
.iv_top h1 > .iv_cross::before {
    top: 15px;
    left: -35px;
}
.iv_top h1 > .iv_big::before {
    top: -9px;
    left: -21px;
}
.iv_top h1 > .iv_end::before {
    width: 32px;
    height: 32px;
    top: 95px;
    left: 21px;
}
.iv_top h1 > span.iv_sub_ttl {
    display: block;
    color: #1E493B;
    /* font-size: 4.2rem; */
    font-size: clamp(2.6rem, 1.873rem + 1.45vw, 4.6rem);
    margin-bottom: 67px;
}
.iv_top_points_container {
    display: flex;
    gap: 20px;
}
.iv_top_point {
    position: relative;
}
.iv_top_point > div:first-of-type {
    width: 190px;
    height: 190px;
    border-radius: 95px;
    background-color: #155A3F;
    mix-blend-mode: multiply;
}
.iv_top_point:nth-child(2) > div:first-of-type{
    background-color: #138056;
}
.iv_top_point > div:nth-of-type(2)::before {
    content: '';
    position: absolute;
    background-image: url(../img/invisalign/cross.svg);
    width: 23px;
    height: 23px;
    top: 20%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-size: cover;
}
.iv_top_point > div:nth-of-type(2) {
    width: 190px;
    height: 190px;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    /* font-size: 2.6rem; */
    font-size: clamp(2rem, 1.782rem + 0.44vw, 2.6rem);
    text-align: center;
    position: absolute;
    top: 0;
}
.iv_top_point > div:nth-of-type(2) > p {
    position: relative;
    top: 5px;
}
.iv_top_points_container + span {
    display: inline-block;
    color: #95A59F;
    /* font-size: 4.0rem; */
    font-size: clamp(2rem, 2.273rem + 1.45vw, 4rem);
    transform: rotate(-4deg);
    position: relative;
    top: -30px;
    letter-spacing: 0;
    opacity: 0.7;
    font-family: "Meddon", cursive;
    font-weight: 400;
    padding: 0 5px;
}
@media (max-width: 1200px) {
    .iv_top h1 {
        padding-top: 40px;
    }
    .iv_top h1 > .iv_cross::before {
        top: 19px;
        left: -22px;
    }
    .iv_top h1 > .iv_big::before {
        top: -4px;
        left: -12px;
    }
    .iv_top h1 > .iv_end::before {
        width: 26px;
        height: 26px;
        top: 80px;
        left: 14px;
    }
    .iv_top h1 > span.iv_sub_ttl {
        margin-bottom: 40px;
    }
}
@media (max-width: 768px) {
    .iv_top{
        background-image: none;
        position: relative;
        height: 80vh;
    }
    .iv_top::before{
        content: "";
        position: absolute;
        width: 100%;
        height: 60%;
        bottom: 0;
        background-image: url(../img/invisalign/top_sp.jpg);
        background-repeat: no-repeat;
        background-size: cover;
        background-position: top center;
        z-index: -1;
    }
    .iv_top h1{
        text-align: center;
    }
    .iv_top_points_container{
        justify-content: center;
    }
    .iv_top_point > div:nth-of-type(2) {
        width: 160px;
        height: 160px;
    }
    .iv_top_point > div:first-of-type {
        width: 160px;
        height: 160px;
    }
    .iv_top h1 > span.iv_sub_ttl {
        margin-bottom: 15px;
    }
    .iv_top .iv_inner{
        position: static;
    }
    .iv_top_points_container + span {
        position: absolute;
        bottom: 20%;
        display: block;
        top: inherit;
    }
}
@media (max-width: 600px) {
    .iv_top {
        height: 72vh;
    }
    .iv_top::before {
        background-position: top right 18%;
    }
    .iv_top h1 {
        line-height: 1.5;
        padding-top: 20px;
        font-size: clamp(3rem, 2.6rem + 2.91vw, 8.5rem);
    }
    .iv_top h1 > span.iv_sub_ttl {
        margin-bottom: 15px;
        margin-top: 20px;
        letter-spacing: 0.15rem;
        line-height: 1.7;
    }
    .iv_top h1 > .iv_end::before {
        width: 26px;
        height: 26px;
        top: 30px;
        left: 30px;
    }
    .iv_top h1 > .iv_big::before {
        top: -4px;
        left: -49px;
    }
    .iv_top_point > div:nth-of-type(2) {
        width: 110px;
        height: 110px;
    }
    .iv_top_point > div:first-of-type {
        width: 110px;
        height: 110px;
        mix-blend-mode: inherit;
    }
    .iv_top_points_container {
        gap: 5px;
        margin-top: 67%;
        position: absolute;
        bottom: -10px;
    }
    .iv_top_point > div:nth-of-type(2) > p {
        font-size: 1.5rem;
        line-height: 1.5;
    }
    .iv_top_points_container + span {
        font-size: 2.1rem;
        bottom: 35%;
    }
}

/* ----------------------------------------------------------------------------
/  iv_what
/ ---------------------------------------------------------------------------- */
.iv_what {
    padding-top: 90px;
    padding-bottom: 160px;
    position: relative;
}
.iv_what > .iv_rect:nth-child(1) {
    content: '';
    position: absolute;
    bottom: 0;
    width: 40%;
    height: 56%;
    background: linear-gradient(to left, #FFFEF4, #EAF8E7);
    transform: skew(0, -15deg);
    z-index: -1;
}
.iv_what > .iv_rect:nth-child(2) {
    content: '';
    position: absolute;
    top: 0;
    right: 0%;
    width: 30%;
    height: 35%;
    background: linear-gradient(to right, #FFFEF4, #EAF8E7);
    transform: skew(0, -15deg);
    mix-blend-mode: multiply;
}
.iv_what > .iv_rect:nth-child(2) > span {
    position: absolute;
    right: 50px;
    bottom: 0;
    white-space: nowrap;
    opacity: 0.3;
    font-family: "Meddon", cursive;
    color: #9F8326;
    font-weight: 400;
    /* font-size: 5.0rem; */
    font-size: clamp(3rem, 2.273rem + 1.45vw, 5rem);
}
.iv_what .iv_inner {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    /* font-size: 2.2rem; */
    font-size: clamp(1.6rem, 1.382rem + 0.44vw, 2.2rem);
}
.iv_what .iv_inner > div {
    width: 50%;
}
.iv_what .iv_inner > div.iv_left > img {
    padding-right: 5%;
    width: 95%;
}
section.iv_what h2 {
    /* font-size: 4.2rem; */
    font-size: clamp(2.2rem, 1.473rem + 1.45vw, 4.2rem);
    font-weight: 500;
    text-align: left;
    margin-bottom: 76px;
}
.iv_what p {
    line-height: 2.1;
}
@media (max-width: 1200px) {
    .iv_what {
        padding-top: 80px;
        padding-bottom: 120px;
    }
    section.iv_what h2 {
        margin-bottom: 70px;
    }
}
@media (max-width: 1000px) {
    .iv_what {
        padding-top: 70px;
        padding-bottom: 100px;
    }
    section.iv_what h2 {
        margin-bottom: 60px;
    }
}
@media (max-width: 800px) {
    .iv_what {
        padding-top: 60px;
        padding-bottom: 80px;
    }
    .iv_what > .iv_rect:nth-child(2) > span {
        display: none;
    }
    .iv_what .iv_inner {
        gap: 30px;
    }
    .iv_what .iv_inner > div {
        width: 100%;
    }
    .iv_what .iv_inner > div.iv_left > img {
        padding-right: unset;
        width: 80%;
        margin: 0 auto;
    }
    section.iv_what h2 {
        margin-bottom: 30px;
    }
}
@media (max-width: 600px) {
    .iv_what {
        padding-top: 40px;
        padding-bottom: 60px;
    }
    section.iv_what h2 {
        margin-bottom: 20px;
    }
}
/* ----------------------------------------------------------------------------
/  iv_features
/ ---------------------------------------------------------------------------- */
.iv_features {
    padding-top: 155px;
    background-image: url(../img/invisalign/features.jpg);
    background-size: cover;
    background-repeat: no-repeat;
    padding-bottom: 120px;
    background-position: center;
}
.iv_feature_points_container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
}
.iv_feature_point {
    position: relative;
    text-align: center;
    /* font-size: 2.8rem; */
    font-size: clamp(1.8rem, 1.55rem + 0.67vw, 2.8rem);
    background-color: #204C3B;
    border: 2px #204C3B solid;
    width: 240px;
    height: 240px;
    border-radius: 120px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
}
.iv_feature_point:hover {
    color: #204C3B;
    background-color: white;
}
.iv_feature_point::after {
    content: '';
    position: absolute;
    background-image: url(../img/invisalign/under.svg);
    background-repeat: no-repeat;
    background-size: 100%;
    width: 20px;
    height: 20px;
    left: calc((100% - 20px) / 2);
    top: 180px;
}
.iv_feature_point:hover::after {
    background-image: url(../img/invisalign/under_gr.svg);
}
.iv_feature_point:nth-child(1) .iv_cross:nth-child(1)::before {
    top: -120px;
    left: -147px;
}
.iv_feature_point:nth-child(1) .iv_cross:nth-child(2)::before {
    top: -90px;
    left: -159px;
}
.iv_feature_point:nth-child(4) .iv_cross:nth-child(2)::before {
    top: 70px;
    left: 110px;
}
.iv_feature_point:nth-child(4) .iv_cross:nth-child(3)::before {
    top: 50px;
    left: 147px;
}
@media (max-width: 1200px) {
    .iv_features {
        padding-top: 120px;
        padding-bottom: 100px;
    }
    .iv_feature_point:nth-child(1) .iv_cross:nth-child(1)::before {
        top: -105px;
        left: -94px;
    }
    .iv_feature_point:nth-child(1) .iv_cross:nth-child(2)::before {
        top: -76px;
        left: -107px;
    }
    .iv_feature_point:nth-child(4) .iv_cross:nth-child(2)::before {
        top: 62px;
        left: 86px;
    }
    .iv_feature_point:nth-child(4) .iv_cross:nth-child(3)::before {
        top: 42px;
        left: 106px;
    }
    .iv_feature_point {
        width: 200px;
        height: 200px;
        border-radius: 100px;
    }
    .iv_feature_point::after {
        top: 150px;
    }
}
@media (max-width: 1000px) {
    .iv_features {
        padding-top: 100px;
        padding-bottom: 80px;
    }
    .iv_feature_point {
        width: 180px;
        height: 180px;
        border-radius: 90px;
    }
    .iv_feature_point::after {
        top: 130px;
    }
    .iv_feature_point:nth-child(1) .iv_cross:nth-child(1)::before {
        top: -95px;
        left: -80px;
    }
    .iv_feature_point:nth-child(1) .iv_cross:nth-child(2)::before {
        top: -67px;
        left: -96px;
    }
}
@media (max-width: 850px) {
    .iv_features {
        padding-top: 80px;
        padding-bottom: 60px;
    }
    .iv_feature_points_container {
        max-width: 400px;
        margin: 0 auto;
        gap: 15px;
    }
}
@media (max-width: 600px) {
    .iv_features {
        padding-top: 40px;
        padding-bottom: 30px;
    }
    .iv_feature_point {
        width: 160px;
        height: 160px;
        border-radius: 80px;
    }
    .iv_feature_point::after {
        top: 120px;
    }
}
@media (max-width: 450px) {
    .iv_feature_point:nth-child(1) .iv_cross:nth-child(1)::before {
        top: -95px;
        left: -68px;
    }
    .iv_feature_point:nth-child(1) .iv_cross:nth-child(2)::before {
        top: -67px;
        left: -82px;
    }
    .iv_feature_point:nth-child(4) .iv_cross:nth-child(2)::before {
        top: 62px;
        left: 73px;
    }
    .iv_feature_point:nth-child(4) .iv_cross:nth-child(3)::before {
        top: 42px;
        left: 87px;
    }
}
@media (max-width: 400px) {
    .iv_feature_point {
        width: 140px;
        height: 140px;
        border-radius: 70px;
    }
    .iv_feature_point::after {
        top: 105px;
    }
}
/* ----------------------------------------------------------------------------
/  iv_features_list
/ ---------------------------------------------------------------------------- */
.iv_features_list {
    margin-top: 100px;
}
.iv_flow_box {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    margin-bottom: 100px;
    margin-top: -166px;
    padding-top: 166px;
}
.iv_flow_num {
    position: absolute;
    top: -90px;
    left: -60px;
    line-height: 1;
    /* font-size: 22.0rem; */
    font-size: clamp(10rem, 7rem + 6vw, 22rem);
    color: #D9E7E1;
    text-align: left;
    font-family: "Cormorant Infant", serif;
    font-weight: 400;
}
.iv_flow_box:nth-child(even) {
    flex-direction: row-reverse;
}
.iv_flow_box:nth-child(even) .iv_flow_num {
    position: absolute;
    top: -90px;
    right: -60px;
    text-align: right;
}
.iv_flow_box > div {
    width: 50%;
}
.iv_features_list h3 {
    /* font-size: 2.8rem; */
    font-size: clamp(2.4rem, 2.047rem + 0.63vw, 2.8rem);
    text-align: center;
    margin-bottom: 25px;
}
.iv_flow_box_desc {
    background-color: #F5F8FD;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 30px 0;
}
.iv_flow_box_pict > img {
    height: 100%;
    object-fit: cover;
}
.iv_cross3 {
    position: relative;
    width: 64px;
    height: 19px;
    display: flex;
    gap: 4px;
}
.iv_cross3 > span {
    width: 19px;
    height: 19px;
    mask-image: url(../img/invisalign/cross.svg);
    -webkit-mask-image: url(../img/invisalign/cross.svg);
    mask-repeat: no-repeat;
    -webkit-mask-repeat: no-repeat;
    mask-size: cover;
    -webkit-mask-size: cover;
    background-color: #9F8326;
}
.iv_flow_box_desc > p {
    margin-top: 30px;
    width: 88.5%;
    /* font-size: 1.8rem; */
    font-size: clamp(1.5rem, 1.425rem + 0.2vw, 1.8rem);
}
.iv_pink {
    color: #FF0058;
}
@media (max-width: 1000px) {
    .iv_features_list {
        margin-top: 80px;
    }
    .iv_flow_box {
        margin-bottom: 80px;
    }
    .iv_flow_num {
        top: -70px;
        left: -40px;
    }
    .iv_flow_box:nth-child(even) .iv_flow_num {
        top: -70px;
        right: -40px;
    }
}
@media (max-width: 850px) {
    .iv_cross3 {
        width: 52px;
    }
    .iv_cross3 > span {
        width: 15px;
        height: 15px;
    }
}
@media (max-width: 800px) {
    .iv_features_list {
        margin-top: 60px;
    }
    .iv_flow_box {
        margin-bottom: 60px;
        margin-top: -136px;
        padding-top: 136px;
    }
    .iv_flow_box > div {
        width: 100%;
    }
    .iv_cross3 > span {
        width: 15px;
        height: 15px;
    }
    .iv_flow_num {
        top: -40px;
        left: 0px;
    }
    .iv_flow_box:nth-child(even) .iv_flow_num {
        text-align: left;
        right: unset;
        top: -40px;
        left: 0px;
    }
}
@media (max-width: 600px) {
    .iv_features_list {
        margin-top: 40px;
    }
    .iv_flow_box {
        margin-bottom: 40px;
    }
    .iv_features_list h3 {
        margin-bottom: 10px;
    }
    .iv_flow_box_desc > p {
        margin-top: 10px;
    }
}
@media (max-width: 500px) {
    .iv_flow_box {
        margin-top: -96px;
        padding-top: 96px;
    }
}
/* ----------------------------------------------------------------------------
/  iv_case
/ ---------------------------------------------------------------------------- */
.iv_case {
    position: relative;
}
.iv_case > .iv_rect:nth-child(1) {
    content: '';
    position: absolute;
    top: -12%;
    left: 0;
    width: 100%;
    height: 28%;
    background: linear-gradient(to left, #FFFEF4, #EAF8E7);
    transform: skew(0, -15deg);
    z-index: -1;
}
.iv_case > .iv_rect:nth-child(2) {
    content: '';
    position: absolute;
    bottom: 2%;
    right: 0;
    width: 100%;
    height: 28%;
    background: linear-gradient(to right, #FFFEF4, #EAF8E7);
    transform: skew(0, -11deg);
    z-index: -1;
}
.iv_case_container {
    display: flex;
    flex-wrap: wrap;
    gap: 26px;
}
.iv_case_container > div {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: calc((100% - 27px * 3) / 4);
}
.iv_case_container > div > span:nth-child(1) {
    /* font-size: 2.0rem; */
    font-size: clamp(1.6rem, 1.459rem + 0.3vw, 2rem);
    color: white;
    background-color: #015D39;
    text-align: center;
    width: 100%;
    line-height: 1.5;
    padding: 10px 0;
    position: relative;
}
.iv_triangle_green {
    position: absolute;
    width: 0;
    height: 0;
    border-style: solid;
    border-right: 15px solid transparent;
    border-left: 15px solid transparent;
    border-top: 26px solid #015D39;
    border-bottom: 0;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
}
.iv_case_container > div > div:nth-of-type(1) {
    margin-top: 30px;
    margin-bottom: 40px;
    position: relative;
}
.iv_case_container > div > div:nth-of-type(1)::before {
    content: '';
    position: absolute;
    width: 48px;
    height: 31px;
    background-image: url(../img/invisalign/triangle.svg);
    background-repeat: no-repeat;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
}
.iv_case_container > div > p {
    margin-top: 30px;
    /* font-size: 1.8rem; */
    font-size: clamp(1.5rem, 1.394rem + 0.34vw, 1.8rem);
    margin-bottom: 30px;
}
.iv_case_link > a {
    position: relative;
    display: block;
    width: 360px;
    height: 79px;
    margin: 100px auto;
    color: white;
    background-color: #9F8326;
}
.iv_case_link > a:hover {
    opacity: 0.7;
}
.iv_case_link > a > span {
    /* font-size: 2.0rem; */
    font-size: clamp(1.6rem, 1.459rem + 0.45vw, 2rem);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.iv_case_notice {
    margin: 0 auto 80px;
    border: 1px #9F8326 solid;
    position: relative;
}
.iv_case_notice::before {
    content: '';
    position: absolute;
    width: 133px;
    height: 1px;
    background-color: #9F8326;
    transform: rotate(-45deg);
    left: -36px;
    top: 30px;
}
.iv_case_notice::after {
    content: '';
    position: absolute;
    width: 133px;
    height: 1px;
    background-color: #9F8326;
    transform: rotate(-45deg);
    right: -36px;
    bottom: 30px;
}
.iv_case_notice > .iv_ttl {
    position: absolute;
    background-color: white;
    text-align: center;
    /* font-size: 2.4rem; */
    font-size: clamp(1.8rem, 1.589rem + 0.68vw, 2.4rem);
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
    padding: 0 2rem;
}
.iv_green {
    color: #015D39;
}
.iv_case_notice > .iv_notice_list {
    width: 88.5%;
    margin: 114px auto 72px;
    height: 96px;
    display: flex;
    flex-wrap: wrap;
    flex-direction: column;
    /* font-size: 1.8rem; */
    font-size: clamp(1.5rem, 1.394rem + 0.34vw, 1.8rem);
    line-height: 1.7;
}
.iv_notice_list > li {
    position: relative;
}
.iv_notice_list > li::before {
    content: '・';
    position: absolute;
    top: 0;
    left: -15px;
}
.iv_h4_outer {
    margin: 0 auto 60px;
    position: relative;
}
.iv_case .iv_h4_outer h4 {
    display: inline-block;
    color: #015D39;
    /* font-size: 4.2rem; */
    font-size: clamp(2.2rem, 1.473rem + 1.45vw, 4.2rem);
    text-align: center;
    padding-bottom: 34px;
    position: relative;
    left: 50%;
    transform: translateX(-50%);
}
.iv_case .iv_h4_outer h4 + div {
    width: 375px;
    margin: 0 auto;
}
.iv_period {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 160px;
}
.iv_period .iv_ttl {
    /* font-size: 2.8rem; */
    font-size: clamp(1.8rem, 1.55rem + 0.67vw, 2.8rem);
}
.iv_period .iv_ttl .iv_big {
    /* font-size: 3.8rem; */
    font-size: clamp(2rem, 1.366rem + 2.03vw, 3.8rem);
}
.iv_period p {
    margin-top: 30px;
    /* font-size: 1.8rem; */
    font-size: clamp(1.5rem, 1.425rem + 0.2vw, 1.8rem);
    line-height: 1.95;
}
.iv_period > div {
    width: 50%;
    position: relative;
}
.iv_period > div > img {
    width: 85%;
}
.iv_period > div > div {
    position: absolute;
    width: 150px;
    height: 150px;
    border-radius: 75px;
    background-color: #9F8326;
    color: white;
    /* font-size: 2.8rem; */
    font-size: clamp(1.6rem, 0.718rem + 1.57vw, 2.6rem);
    text-align: center;
    bottom: -20px;
    right: 7%;
}
.iv_period > div > div > span {
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.iv_invisalign_notice {
    max-width: 880px;
    margin: 0 auto 160px;
    border: 1px solid #9F8326;
    padding: 40px;
}
.iv_invisalign_notice h3 {
    font-weight: 500;
    text-align: center;
    /* font-size: 2.4rem; */
    font-size: clamp(1.8rem, 1.589rem + 0.68vw, 2.4rem);
    margin-bottom: 60px;
}
.iv_invisalign_notice h4 {
    font-weight: 400;
    margin-top: 40px;
    margin-bottom: 20px;
    font-size: clamp(1.6rem, 1.4rem + 0.6vw, 2.4rem);
    color: #015D39;
}
@media (max-width: 1200px) {
    .iv_case h2 + .iv_cross {
        margin-bottom: 80px;
    }
    .iv_case_link > a {
        margin: 80px auto 100px;
    }
    .iv_period,
    .iv_invisalign_notice {
        margin-bottom: 120px;
    }
}
@media (max-width: 1000px) {
    .iv_case h2 + .iv_cross {
        margin-bottom: 70px;
    }
    .iv_case_link > a {
        margin: 70px auto 100px;
    }
    .iv_case_notice {
        margin: 0 auto 60px;
    }
    .iv_case_notice::before {
        display: none;
    }
    .iv_case_notice::after {
        display: none;
    }
    .iv_case_notice > .iv_notice_list {
        margin: 90px auto 60px;
        flex-wrap: nowrap;
        height: unset;
    }
    .iv_h4_outer {
        margin: 0 auto 40px;
    }
    .iv_case .iv_h4_outer h4 {
        padding-bottom: 25px;
    }
    .iv_period,
    .iv_invisalign_notice {
        margin-bottom: 100px;
    }
    .iv_period > div > div {
        width: 120px;
        height: 120px;
        border-radius: 60px;
    }
}
@media (max-width: 800px) {
    .iv_case h2 + .iv_cross {
        margin-bottom: 60px;
    }
    .iv_case_container > div {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: calc((100% - 27px) / 2);
    }
    .iv_case_link > a {
        margin: 20px auto 100px;
    }
    .iv_case_notice {
        margin: 0 auto 40px;
    }
    .iv_case_notice > .iv_ttl {
        top: -60px;
        padding: 0;
    }
    .iv_h4_outer {
        margin: 0 auto 30px;
    }
    .iv_case .iv_h4_outer h4 {
        padding-bottom: 20px;
    }
    .iv_period,
    .iv_invisalign_notice {
        margin-bottom: 80px;
    }
    .iv_period > div {
        width: 100%;
    }
    .iv_period > div > img {
        width: 100%;
    }
    .iv_period > div:nth-child(2) {
        margin-top: 50px;
    }
    .iv_period > div > div {
        bottom: 0;
        right: 0;
    }
    .iv_invisalign_notice h3 {
        text-align: left;
        margin-bottom: 20px;
    }
    .iv_invisalign_notice h3 br {
        display: none;
    }
    .iv_invisalign_notice h4 {
        margin-top: 30px;
        margin-bottom: 10px;
    }
}
@media (max-width: 600px) {
    .iv_case h2 + .iv_cross {
        margin-bottom: 40px;
    }
    .iv_case_link > a {
        margin: 10px auto 100px;
    }
    .iv_case_notice {
        margin: 0 auto 20px;
    }
    .iv_h4_outer {
        margin: 0 auto 20px;
    }
    .iv_case .iv_h4_outer h4 {
        padding-bottom: 10px;
    }
    .iv_period {
        margin-bottom: 60px;
    }
    .iv_period > div:nth-child(2) {
        margin-top: 30px;
    }
    .iv_period > div > div {
        width: 100px;
        height: 100px;
        border-radius: 50px;
    }
    .iv_period p {
        margin-top: 10px;
    }
    .iv_invisalign_notice {
        margin: 0 auto 60px;
        padding: 20px;
    }
}
@media (max-width: 430px) {
    .iv_case .iv_h4_outer h4 + div {
        width: 275px;
    }
    .iv_case_link > a {
        width: 275px;
    }
}
/* ----------------------------------------------------------------------------
/  iv_consult
/ ---------------------------------------------------------------------------- */
.iv_consult {
    padding-top: 40px;
    background-color: #204C3B;
    color: white;
    /* font-size: 2.4rem; */
    font-size: clamp(1.8rem, 1.589rem + 0.68vw, 2.4rem);
    text-align: center;
    line-height: normal;
    padding-bottom: 80px;
}
.iv_consult h3 {
    color: white;
    opacity: 0.2;
    /* font-size: 8.0rem; */
    font-size: clamp(3rem, 1.239rem + 5.63vw, 8rem);
    margin: 0 auto;
    font-family: "Cormorant Infant", serif;
    font-weight: 400;
}
.iv_consult_call {
    margin: 40px auto 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-evenly;
    align-items: center;
    gap: 30px;
}
.iv_consult_call > span.iv_tel {
    display: flex;
    gap: 10px;
    align-items: center;
    margin: 0 20px;
    /* font-size: 3.8rem; */
    font-size: clamp(2rem, 1.366rem + 2.03vw, 3.8rem);
}
.iv_consult_call > span.iv_tel> img {
    width: 31px;
    height: 31px;
}
.iv_consult_call > span.iv_tel > a {
    color: white;
}
.iv_consult_call > a {
    color: white;
    background-color: #A78B3E;
    /* font-size: 2.0rem; */
    font-size: clamp(1.6rem, 1.459rem + 0.45vw, 2rem);
    padding: 2rem 5rem;
}
.iv_consult_call a:hover {
    opacity: 0.7;
}
@media (max-width:1200px) {
    .iv_consult {
        padding-bottom: 60px;
    }
}
@media (max-width:1000px) {
    .iv_consult {
        padding-bottom: 50px;
    }
}
@media (max-width:800px) {
    .iv_consult {
        padding-bottom: 40px;
    }
}
@media (max-width:600px) {
    .iv_consult {
        padding-bottom: 30px;
    }
}
/* ----------------------------------------------------------------------------
/  iv_aboutus
/ ---------------------------------------------------------------------------- */
.iv_aboutus {
    position: relative;
    overflow: hidden;
    padding-bottom: 150px;
    /* font-size: 1.8rem; */
    font-size: clamp(1.5rem, 1.425rem + 0.2vw, 1.8rem);
}
.iv_aboutus > .iv_rect:nth-child(1) {
    content: '';
    position: absolute;
    bottom: -16%;
    width: 100%;
    height: 58%;
    background: linear-gradient(to left, #FFFEF4, #EAF8E7);
    transform: skew(0, -11deg);
    z-index: -1;
}
.iv_aboutus h2 {
    margin-top: 140px;
}
.iv_aboutus_desc {
    display: flex;
}
.iv_aboutus_desc > .iv_left {
    width: 38%;
    padding-right: 5%;
}
.iv_aboutus_desc > .iv_right {
    width: 62%;
    margin-bottom: 108px;
}
.iv_aboutus h3 {
    /* font-size: 2.8rem; */
    font-size: 2.8rem;
    color: #015D39;
    margin-left: 2.8rem;
    position: relative;
}
.iv_aboutus h3::before {
    content: '';
    position: absolute;
    width: 21px;
    height: 21px;
    mask-image: url(../img/invisalign/cross.svg);
    -webkit-mask-image: url(../img/invisalign/cross.svg);
    mask-repeat: no-repeat;
    -webkit-mask-repeat: no-repeat;
    mask-size: cover;
    -webkit-mask-size: cover;
    background-color: #015D39;
    top: 16px;
    left: -26px;
}
.iv_aboutus h3:nth-of-type(2) {
    color: #9F8326;
}
.iv_aboutus h3:nth-of-type(2)::before {
    background-color: #9F8326;
}
.iv_aboutus_desc p {
    margin-top: 30px;
    margin-bottom: 60px;
}
.iv_signature {
    position: absolute;
    text-align: right;
    bottom: 0;
    right: 0;
}
@media (max-width:1200px) {
    .iv_aboutus {
        padding-bottom: 120px;
    }
    .iv_aboutus h2 {
        margin-top: 120px;
    }
    .iv_aboutus h2 + .iv_cross {
        margin-bottom: 70px;
    }
    .iv_aboutus h3 {
        font-size: 2.2rem;
        margin-left: 3.5rem;
    }
    .iv_aboutus h3::before {
        top: 11px;
        left: -28px;
    }
}
@media (max-width:1000px) {
    .iv_aboutus {
        padding-bottom: 100px;
    }
    .iv_aboutus h2 {
        margin-top: 100px;
    }
    .iv_aboutus h2 + .iv_cross {
        margin-bottom: 60px;
    }
    .iv_aboutus h3 {
        font-size: 2.0rem;
    }
    .iv_aboutus h3::before {
        top: 9px;
        left: -26px;
    }
}
@media (max-width:800px) {
    .iv_aboutus {
        padding-bottom: 80px;
    }
    .iv_aboutus h2 {
        margin-top: 80px;
    }
    .iv_aboutus h2 + .iv_cross {
        margin-bottom: 40px;
    }
    .iv_aboutus_desc {
        flex-direction: column;
    }
    .iv_aboutus_desc > .iv_right {
        width: 100%;
        margin-bottom: 90px;
    }
    .iv_aboutus_desc > .iv_left {
        width: 50%;
        margin: 0 auto 30px;
        min-width: 250px;
    }
}
@media (max-width:600px) {
    .iv_aboutus {
        padding-bottom: 60px;
    }
    .iv_aboutus h2 {
        margin-top: 60px;
    }
    .iv_aboutus h3 {
        font-size: 1.8rem;
        margin-left: 2.2rem;
    }
    .iv_aboutus h3::before {
        width: 18px;
        height: 18px;
        top: 9px;
        left: -22px;
    }
}
/* ----------------------------------------------------------------------------
/  iv_slider
/ ---------------------------------------------------------------------------- */
.iv_slider {
    width: 100%;
    display: flex;
}
.iv_slider > img {
    width: 25%;
}
@media (max-width:800px) {
    .iv_slider > img {
        width: 50%;
    }
}
/* ----------------------------------------------------------------------------
/  iv_flow
/ ---------------------------------------------------------------------------- */
.iv_flow {
    padding: 160px 0;
    position: relative;
}
.iv_flow > .iv_rect:nth-child(1) {
    content: '';
    position: absolute;
    top: 0;
    width: 100%;
    height: 35%;
    background: linear-gradient(to left, #FFFEF4, #EAF8E7);
    transform: skew(0, -15deg);
    z-index: -1;
}
.iv_flow > .iv_rect:nth-child(2) {
    content: '';
    position: absolute;
    bottom: 3%;
    right: 0;
    width: 100%;
    height: 22%;
    background: linear-gradient(to right, #FFFEF4, #EAF8E7);
    transform: skew(0, -15deg);
}
.iv_flow > .iv_inner {
    background-color: white;
    box-shadow: 0px 0px 20px 10px #F8F8F8;
}
.iv_flow div:has(h2) {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin-bottom: 95px;

}
.iv_flow h2 {
    margin: 140px auto 40px;
    /* font-size: 4.2rem; */
    font-size: clamp(2.2rem, 1.473rem + 1.45vw, 4.2rem);
}
.iv_flow_step_container {
    display: flex;
    flex-direction: column;
    gap: 70px;
    margin-bottom: 100px;
    position: relative;
}
.iv_flow_step_container::before {
    content: '';
    position: absolute;
    background-image: url(../img/invisalign/line_grad.svg);
    background-repeat: no-repeat;
    width: 3px;
    height: 100%;
    left: 18%;
    background-size: cover;
}
.iv_flow_step {
    display: flex;
}
.iv_flow_step > .iv_num {
    width: 18%;
    /* font-size: 8.0rem; */
    font-size: clamp(3rem, 1.239rem + 5.63vw, 8rem);
    color: #015D39;
    text-align: center;
    line-height: normal;
    font-family: "Cormorant Infant", serif;
    font-weight: 400;
}
.iv_flow_step > .iv_flow_step_desc {
    width: 49%;
    color: #292929;
    padding: 0 5%;
    line-height: 1.95;
}
.iv_flow_step h3 {
    /* font-size: 2.8rem; */
    font-size: clamp(1.8rem, 1.55rem + 0.67vw, 2.8rem);
    margin-bottom: 20px;
}
.iv_flow_step > .iv_flow_step_desc > p {
    /* font-size: 1.8rem; */
    font-size: clamp(1.5rem, 1.425rem + 0.2vw, 1.8rem);
}
.iv_flow_step > .iv_flow_step_desc + div {
    width: 33%;
}
.iv_flow_step > .iv_flow_step_desc + div > img {
    width: 76%;
}
@media (max-width: 1200px) {
    .iv_flow {
        padding: 80px 0;
    }
    .iv_flow div:has(h2) {
        margin-bottom: 75px;
    }
    .iv_flow h2 {
        margin: 100px auto 30px;
    }
    .iv_flow_step_container {
        margin-bottom: 100px;
    }
}
@media (max-width: 1000px) {
    .iv_flow {
        padding: 40px 0;
    }
    .iv_flow div:has(h2) {
        margin-bottom: 60px;
    }
    .iv_flow h2 {
        margin: 60px auto 25px;
    }
    .iv_flow_step_container {
        margin-bottom: 80px;
        gap: 60px;
    }
}
@media (max-width: 800px) {
    .iv_flow {
        padding: 20px 0;
    }
    .iv_flow div:has(h2) {
        margin-bottom: 40px;
    }
    .iv_flow h2 {
        margin: 40px auto 20px;
    }
    .iv_flow_step_container::before {
        display: none;
    }
    .iv_flow_step_container {
        margin-bottom: 60px;
        gap: 40px;
    }
    .iv_flow_step {
        flex-direction: column;
    }
    .iv_flow_step > .iv_num {
        width: 80%;
        margin: 0 auto 10px;
        text-align: left;
    }
    .iv_flow_step > .iv_num > h3.sp800 {
        display: inline;
        font-size: 2.5rem;
        color: #292929;
        margin-left: 15px;
    }
    .iv_flow_step > .iv_flow_step_desc {
        width: 80%;
        margin: 0 auto 20px;
        padding: 0;
    }
    .iv_flow_step h3 {
        margin-bottom: 10px;
    }
    .iv_flow_step > .iv_flow_step_desc + div {
        width: 80%;
        margin: 0 auto;
    }
    .iv_flow_step > .iv_flow_step_desc + div > img {
        width: 80%;
        margin: 0 auto;
        display: block;
    }
}
@media (max-width: 600px) {
    .iv_flow {
        padding: 40px 0;
    }
    .iv_flow div:has(h2) {
        margin-bottom: 30px;
    }
    .iv_flow h2 {
        margin: 20px auto 10px;
    }
    .iv_flow_step_container {
        margin-bottom: 40px;
        gap: 30px;
    }
    .iv_flow_step > .iv_flow_step_desc + div > img {
        width: 100%;
    }
}
/* ----------------------------------------------------------------------------
/  iv_faq
/ ---------------------------------------------------------------------------- */
.iv_faq_box {
    max-width: 960px;
    width: 85%;
    margin: 0 auto 70px;
}
.iv_faq_box > .iv_q {
    /* font-size: 2.4rem; */
    font-size: clamp(1.8rem, 1.271rem + 0.94vw, 2.4rem);
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    border-bottom: 1px #707070 solid;
    padding-bottom: 20px;
}
.iv_faq_box > summary.iv_q {
    list-style: none;
	cursor: pointer;
}
.iv_faq_box > summary.iv_q::-webkit-details-marker {
	display: none;
}
.iv_faq_box > .iv_q > p::before {
    content: 'Q.';
    position: absolute;
    font-size: 4.0rem;
    color: #015D39;
    font-family: "Cormorant Infant", serif;
    font-weight: 400;
    line-height: 0.8;
    left: 0;
}
.iv_faq_box > .iv_q > p {
    position: relative;
    padding-left: 6rem;
    padding-right: 30px;
    width: 100%;
    line-height: normal;
}
.iv_faq_box > .iv_q > p::after {
    position: absolute;
    width: 26px;
    height: 26px;
    content: '';
    mask-image: url(../img/invisalign/plus.svg);
    -webkit-mask-image: url(../img/invisalign/plus.svg);
    mask-repeat: no-repeat;
    -webkit-mask-repeat: no-repeat;
    mask-size: cover;
    -webkit-mask-size: cover;
    background-color: #707070;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
}
.iv_faq_box > .iv_a {
    /* font-size: 1.8rem; */
    font-size: clamp(1.5rem, 1.425rem + 0.2vw, 1.8rem);
}
.iv_faq_box > .iv_a > p::before {
    content: 'A.';
    position: absolute;
    font-size: 4.0rem;
    color: #015D39;
    font-family: "Cormorant Infant", serif;
    font-weight: 400;
    line-height: 0.8;
    left: 0;
}
.iv_faq_box > .iv_a > p {
    position: relative;
    margin-top: 20px;
    padding-left: 6rem;
    padding-right: 30px;
    line-height: normal;
}
.iv_faq_box > .iv_a > p > a {
    text-decoration: underline;
}
details.iv_faq_box[open]> .iv_q > p::after {
    mask-image: url(../img/invisalign/minus_g.svg);
    -webkit-mask-image: url(../img/invisalign/minus_g.svg);
}
@media (max-width: 1200px) {
    .iv_faq h2 + .iv_cross {
        margin-bottom: 70px;
    }
    .iv_faq_box {
        margin-bottom: 60px;
    }
}
@media (max-width: 1000px) {
    .iv_faq h2 + .iv_cross {
        margin-bottom: 50px;
    }
    .iv_faq_box {
        margin-bottom: 40px;
    }
}
@media (max-width: 800px) {
    .iv_faq h2 + .iv_cross {
        margin-bottom: 40px;
    }
    .iv_faq_box {
        margin-bottom: 30px;
    }
}
@media (max-width: 600px) {
    .iv_faq h2 + .iv_cross {
        margin-bottom: 30px;
    }
    .iv_faq_box {
        width: auto;
        margin: 0 50px 20px auto;
    }
    .iv_faq_box .iv_big {
        font-size: 3.0rem;
        padding-right: 1rem;
    }
    .iv_faq_box > .iv_q > p {
        padding-left: 3.5rem;
    }
    .iv_faq_box > .iv_a > p {
        padding-left: 3.5rem;
    }
    .iv_faq_box > .iv_q > p::before,
    .iv_faq_box > .iv_a > p::before {
        font-size: 3.0rem;
    }
}
@media (max-width: 500px) {
    .iv_faq_box {
        margin: 0 20px 20px 0;
    }
}
/* ----------------------------------------------------------------------------
/  iv_price
/ ---------------------------------------------------------------------------- */
.iv_price {
    margin-bottom: 210px;
}
.iv_price > .iv_inner {
    max-width: 820px;
}
.iv_price h2 {
    margin-top: 140px;
}
.iv_price h3 {
    /* font-size: 3.0rem; */
    font-size: clamp(1.8rem, 1.377rem + 1.35vw, 3rem);
}
.iv_price p {
    /* font-size: 1.8rem; */
    font-size: clamp(1.5rem, 1.425rem + 0.2vw, 1.8rem);
    margin-bottom: 40px;
}
.iv_price table {
    width: 100%;
    margin-bottom: 80px;
}
.iv_price th {
    color: white;
    background-color: #204C3B;
    /* font-size: 1.8rem; */
    font-size: clamp(1.5rem, 1.425rem + 0.2vw, 1.8rem);
    width: 35%;
    border: 2px transparent solid;
    position: relative;
}
.iv_price th > span {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.iv_price td {
    background-color: #FBFAF4;
    text-align: center;
    border: 2px transparent solid;
    line-height: normal;
    padding: 10px;
}
.iv_price td > div {
    display: flex;
    flex-direction: column;
}
.iv_price td > div > div {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.6rem;
}
.iv_price td > div > span {
    font-size: 1.4rem;
}
.iv_treatment {
    text-align: center;
    height: 90px;
    background-color: #FBFAF4;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.6rem;
    margin-bottom: 80px;
}
@media (max-width: 1200px) {
    .iv_price {
        margin-bottom: 120px;
    }
    .iv_price h2 {
        margin-top: 100px;
    }
    .iv_price h2 + .iv_cross {
        margin-bottom: 70px;
    }
}
@media (max-width: 1000px) {
    .iv_price {
        margin-bottom: 80px;
    }
    .iv_price h2 {
        margin-top: 80px;
    }
    .iv_price h2 + .iv_cross {
        margin-bottom: 50px;
    }
    .iv_price table {
        margin-bottom: 60px;
    }
    .iv_treatment {
        margin-bottom: 60px;
    }
}
@media (max-width: 800px) {
    .iv_price {
        margin-bottom: 60px;
    }
    .iv_price h2 {
        margin-top: 60px;
    }
    .iv_price h2 + .iv_cross {
        margin-bottom: 40px;
    }
    .iv_price table {
        margin-bottom: 40px;
    }
    .iv_treatment {
        margin-bottom: 40px;
    }
}
@media (max-width: 600px) {
    .iv_price {
        margin-bottom: 30px;
    }
    .iv_price h2 {
        margin-top: 40px;
    }
    .iv_price h2 + .iv_cross {
        margin-bottom: 30px;
    }
    .iv_price td > div > div {
        flex-direction: column;
    }
    section.iv_price td > div > div > span:nth-child(2) {
        transform: rotate(90deg);
    }
}