:root {
    --accent: #DA3B3E;
    --mincho: A1 Mincho,shippori-mincho, sans-serif;
    --gothic: noto-sans, sans-serif;
}


html {
    font-size: 3.2vw;
}
@media screen and (min-width:900px) {
    html {
        font-size: 28.8px;
    }
}

body {
    position: relative;
    margin:auto;
    width: 100%;
    background: #fafafa;
    color: #4E4E50;
    font-weight: 400;
    font-style: normal;
}

h1,h2,p,small {
    display: block;
    margin: auto;
    text-align: center;
}

.container {
    max-width: 900px;
    margin: auto;
    -moz-box-shadow: 0px 0px 20px 4px rgba(0, 0, 0, 0.4);
-webkit-box-shadow: 0px 0px 20px 4px rgba(0, 0, 0, 0.4);
-ms-box-shadow: 0px 0px 20px 4px rgba(0, 0, 0, 0.4);
box-shadow: 0px 0px 20px 4px rgba(0, 0, 0, 0.4);
}

/******************
header
*******************/

.header {
    position: absolute;
    z-index: 3;
    top: 0;
    right: 0;
    left: 0;
    max-width: 900px;
    margin: auto;
    padding-top: 1.1rem;
    padding-left: 3%;
}

.header__img {
    width: 35%;
    aspect-ratio: 308/74;
    margin: 0;
}

/******************
FV
*******************/

.fv {
    padding-bottom: 3.7rem;
    background-color: #FFFCF9;
}

.fv__img {
    position: relative;
    z-index: 2;
    width: 100%;
    aspect-ratio: 1170/1906;
}

.fv__aside {
    position: absolute;
    z-index: 1;
    top: 40rem;
    right: 0;
    left: 0;
    display: block;
    width: 100%;
    max-width: 800px;
    margin: auto;
    color: #fff;
}

.fv__h1 {
    margin-block: 3.2rem 1.5rem;
    font-size: 2rem;
    line-height: 1.3;
    font-family: var(--mincho);
    font-weight: 400;
}
.fv__h1 span.s {
    font-size: .8em;
}
.fv__h1 span.l {
    font-size: 1.3em;
}
.fv__h1 span.dot {
    font-size: 1em;
    letter-spacing: -.8rem;
}

.fv__p {
    margin-bottom: 1.8rem;
    font-size: 1.2rem;
    line-height: 1.9;
    font-family: var(--mincho);
}

/******************
cta
*******************/

.cta {
    position: relative;
    width: 91%;
    aspect-ratio: 1062/1411;
    margin:3rem auto;
}

.cta__img {
    width: 100%;
    height: 100%;
}

.cta__button {
    position: absolute;
    right: 0;
    left: 0;
    bottom: 1rem;
    width: 90%;
    aspect-ratio: 738/202;
    margin: auto;
}

.cta__button img {
    width: 100%;
    height: 100%;
}

  .button__animation {
    display: block;
    position: relative;
    overflow: hidden;
  }
  
  .button__animation:before {
      position: absolute;
      content: '';
      display: inline-block;
      top: 0;
      left: 0;
      width: 30px;
      height: 100%;
      background-color: #fbfbfb;
      -webkit-animation: btn_animation 2.5s ease-in-out infinite;
              animation: btn_animation 2.5s ease-in-out infinite;
  }
  
@-webkit-keyframes btn_animation {
    0% {
        -webkit-transform: scale(0) rotate(45deg);
        opacity: 0;
    }
    80% {
        -webkit-transform: scale(0) rotate(45deg);
        opacity: 0.5;
    }
    81% {
        -webkit-transform: scale(4) rotate(45deg);
        opacity: 1;
    }
    100% {
        -webkit-transform: scale(50) rotate(45deg);
        opacity: 0;
    }
}

@keyframes btn_animation {
    0% {
        transform: scale(0) rotate(45deg);
        opacity: 0;
    }
    80% {
        transform: scale(0) rotate(45deg);
        opacity: 0.5;
    }
    81% {
        transform: scale(4) rotate(45deg);
        opacity: 1;
    }
    100% {
        transform: scale(50) rotate(45deg);
        opacity: 0;
    }
}


/******************
年齢を重ねてゆらぎ...
*******************/

.equol {
    position: relative;
    padding-block: 34rem 4rem;
    background: #FFFCF9 center top/contain no-repeat;
}

.equol__p {
    padding-left: 5%;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    line-height: 1.57;
    font-family: var(--mincho);
    text-align: left;
}

.equol__p span.s {
    font-size: .8em;
}

.equol__logo {
    width: 52%;
    aspect-ratio: 619/128;
    padding-left: 5%;
    margin: 0 0 .2rem;
    -webkit-box-sizing: content-box;
            box-sizing: content-box;
}

.equol__seibun {
    width: 100%;
    aspect-ratio: 918/875;
}

.reason__ImgLead {
    position: fixed;
    z-index: -1;
    top: 0;
    width: 100%;
    aspect-ratio: 1/1;
}

/******************
3冠達成
*******************/

.achive {
    padding-block: 2.8rem 1.6rem;
    background: center top/cover no-repeat;
}

.achive__p {
    position: relative;
    padding-bottom: 1.1rem;
    margin-bottom: 3rem;
    font-size: 1.3rem;
    font-family: var(--gothic);
}

.achive__p:after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    left: 0;
    margin: auto;
    width: 34%;
    height: 1px;
    background-color: #000;
}

.achive__img3kan {
    width: 93%;
    aspect-ratio: 862/358;
}

.achive__emblems {
    position: relative;
    width: 98%;
    height: 21.4rem;
    margin: 2.2rem auto 1rem;
}

.achive__emblems img {
    position: absolute;
    width: 52%;
    aspect-ratio: 458/316;
}

.achive__emblems__img1 {
    top: 0;
    right: 0;
    left: 0;
    margin: auto;
}

.achive__emblems__img2 {
    bottom: 0;
    left: 0;
}

.achive__emblems__img3 {
    bottom: 0;
    right: 0;
}

.achive__small {
    width: 95%;
    font-size: .52rem;
    font-family: var(--gothic);
    text-align: justify;
 }

/******************
毎日の「なんだか調...
*******************/

.worries {
    padding-block: 2.4rem 7.4rem;
    background: #E2E2E2 url('../img/worries/onayami_img.jpg') right top +8.4rem/81% no-repeat;
}

.worries__h2 {
   width: -webkit-max-content;
   width: -moz-max-content;
   width: max-content;
   margin: 0 0 16.6rem;
   text-align: left;
   font-size: 1.6rem;
   font-family: var(--gothic);
   font-weight: 700;
   letter-spacing: .1rem;
}

.worries__h2 span:first-child {
    display: block;
    background-color: #fff;
    margin-bottom: .6rem;
    padding: .5rem 0 .5rem 1rem;
}

.worries__h2 span:last-child {
    display: inline-block;
    background-color: #fff;
    padding: .5rem .8rem .5rem 1rem;
}

.worries__worry {
    position: relative;
    width: 92%;
    height: 25.6rem;
    margin: auto;
    font-size: 1.6rem;
    line-height: 1.3;
    font-family: var(--gothic);
    font-weight: 700;
    background: top left/contain no-repeat;
}

.worries__worry__p1 {
    position: absolute;
    top: 2.6rem;
    left: 10.5%;
}

.worries__worry__p2 {
    position: absolute;
    top: 6.2rem;
    right: 4%;
}

.worries__worry__p3 {
    position: absolute;
    left: 10%;
    bottom: 4.2rem;
}

.worries__worry__p4 {
    position: absolute;
    right: 6%;
    bottom: 3.8rem;
}

.worries__line1 {
    position: relative;
    top: -.8rem;
    left: -2%;
    display: block;
    width: 1px;
    height: 11.4rem;
    margin: auto;
    background-color: #000;
}

.worries__pIf {
    font-size: 1.4rem;
    line-height: 1.8;
    font-family: var(--mincho);
}

.worries__pIf span.l {
    font-size: 1.7em;
}

.worries__imgGensyo {
    width: 93%;
    aspect-ratio: 838/232;
}

.worries__gif {
    width: 86%;
    aspect-ratio: 1159/750;
    margin-block: 2rem 1.4rem;
}

.worries__pGensyo {
    font-size: 1.5rem;
    line-height: 1.37;
    font-family: var(--mincho);
}

.worries__pGensyo span {
    color: var(--accent);
    font-size: 1.8em;
}

.worries__pGensyo span.l {
    font-size: 3.3rem;
}

/******************
だから
*******************/

.solution {
    padding-top: 2.3rem;
    background-color: #FFEDEB;
}

.solution__pBecause {
    position: relative;
    margin-bottom: 8rem;
    font-size: 2.2rem;
    font-family: var(--gothic);
}

.solution__pBecause:before,
.solution__pBecause:after {
    content: '';
    position: absolute;
    right: 0;
    left: 0;
    margin: auto;
    width: 1px;
    background-color: #000;
}
.solution__pBecause:before {
    top: -5.8rem;
    height: 4.8rem;
}
.solution__pBecause:after {
    bottom: -7.2rem;
    height: 6.2rem;
}

.solution__h2 {
    margin-bottom: 3.3rem;
    font-size: 2.6rem;
    line-height: 1.5;
    font-family: var(--mincho);
    font-weight: 400;
}

.solution__h2 span {
    font-size: 1.08em;
    font-style: italic;
    color: var(--accent);
}

.solution__imgEquol {
    width: 100%;
    aspect-ratio: 900/1278;
}

.solution__small {
    color: #fff;
    font-size: 1.4rem;
    line-height: 2.7;
    font-family: var(--gothic);
    font-style: italic;
    font-weight: 500;
    background: #e1616d;
    background: -webkit-gradient(linear, left top, right top, from(rgba(225,97,109,1)), color-stop(22%, rgba(242,142,128,1)));
    background: -o-linear-gradient(left, rgba(225,97,109,1) 0%, rgba(242,142,128,1) 22%);
    background: linear-gradient(90deg, rgba(225,97,109,1) 0%, rgba(242,142,128,1) 22%);
}

/******************
サポート
*******************/

.support {
    padding-block: 1.7rem 2.7rem;
    background-color: #FFEDEB;
}

.support__h2__img {
    width: 100%;
    aspect-ratio: 912/358;
    margin-bottom: 1rem;
}

.support__p,
.reason__p {
    display: block;
    width: 96%;
    margin: auto;
    font-size: 1.19rem;
    line-height: 1.66;
    font-weight: 500;
    font-family: var(--gothic);
    text-align: justify;
}

/******************
事実、２人に１人は...
*******************/

.reason {
    position: relative;
    padding-block: 3.3rem 8rem;
    background-color: #E2E2E2;
}

.reason:after {
    content: '';
    position: absolute;
    right: 0;
    left: 0;
    bottom: -5.6rem;
    height: 13rem;
    aspect-ratio: 68 / 369;
    margin: auto;
    background: url(../img/reason/arrow.png) center top/contain no-repeat;
}

.reason__h2 {
    width: 98%;
    aspect-ratio: 900/322;
    margin-bottom: 1.3rem;
}

.reason__p {
    width: 90%;
    font-size: 1.17rem;
}

.reason__haisyutu {
    position: relative;
    width: 93%;
    margin: 2.3rem auto .8rem;
    padding: 1.5rem .5rem 2rem;
    background-color: #fff;
    border: 1px solid #b5b5b5;
}

.reason__haisyutu__p {
    margin-bottom: .5rem;
    font-size: 1.6rem;
    font-weight: 700;
    font-family: var(--gothic);
}

.reason__haisyutu__img {
    width: 100%;
    aspect-ratio: 784/277;
}

.reason__haisyutu__pTsumari {
    position: absolute;
    right: 0;
    left: 0;
    bottom: -2rem;
    width: -webkit-max-content;
    width: -moz-max-content;
    width: max-content;
    padding-inline: 1rem;
    color: #fff;
    font-size: 2rem;
    line-height: 1.4;
    font-weight: 700;
    font-family: var(--gothic);
    background: #fa8373;
}

.reason__imgHusoku {
    width: 100%;
    aspect-ratio: 878/796;
}

/******************
特徴
*******************/

.point {
    padding-top: 7.6rem;
    background-color: #FDFDF9;
}

.point__p {
    margin-bottom: 3.6rem;
    font-size: 2.2rem;
    line-height: 1.6;
    font-family: var(--mincho);
}

.point__p span {
    font-size: 1.2em;
}

.point__h2 {
    margin-bottom: 2rem;
    padding: 4.6rem 0 0 4%;
    font-size: 1.26rem;
    font-weight: 700;
    font-family: var(--gothic);    
    text-align: left;
    background: right top/98% no-repeat;
}

.scrollDiv {
    position: relative;
    height: 300vh;
}

.scrollDiv:nth-of-type(2) {
    height: 200vh;
}

.scrollDiv:nth-of-type(2) .scrollDiv__sticky__scrollX {
    width: 200%;
}

.scrollDiv__sticky {
    overflow: hidden;
    position: sticky;
    top: 0;
    height: 100vh;
}

.scrollDiv__sticky__scrollX {
    position: absolute;
    top: 0;
    width: 300%;
    height: 100%;
    will-change: transform;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
}

.scrollX {
    width: 100%;
    height: 100vh;
    padding: 6vh 1.2rem 0;
    font-family: var(--mincho);
    font-weight: 300;
}

.scrollX__number {
    font-size: 1.5rem;
}

.scrollX__pTitle {
    margin-block: 2vh 3vh;
    font-size: 1.56rem;
    text-align: left;
    
}

.scrollX__pTitle span {
    font-size: 1.5em;
    color: var(--accent);
}

.scrollX__img {
    width: 100%;
    max-height: 40vh;
    aspect-ratio: 848/723;
    -o-object-fit: cover;
       object-fit: cover;
}

.scrollX__h3 {
    font-size: 1.35rem;
    text-align: left;
    margin-block: 2vh;
}

.scrollX__pText {
    font-size: 1.11rem;
    line-height: 1.5;
    text-align: left;
    font-family: var(--gothic);    

 }

/******************
品質
*******************/

.quality {
    padding-block: 1.8rem 2.7rem;
    font-family: var(--gothic);
    background-color: #F1FAEE;
}

.quality__h2 {
    display: block;
    width: 94%;
    margin: auto;
    padding-block: 5.5rem 2rem;
    font-size: 1.26rem;
    text-align: left;
    background: center top/contain no-repeat;
}

.quality__imgFactory {
    margin-top: 4rem;
    width: 100%;
    aspect-ratio: 895/596;
}

.quality__div {
    width: 90%;
    margin: 1.4rem auto;
}

.quality__div__pTitle {
    margin-bottom: .5rem;
    font-size: 1.4rem;
    font-weight: 700;
    text-align: left;
}

.quality__div__p,
.quality__div__p2 {
    padding-left: 4%;
    margin-bottom: 2rem;
    font-size: 1.15rem;
    line-height: 1.7;
    text-align: left;
}

.quality__div__p2 {
    padding-left: 1%;
    margin-block: 1.6rem 0;
}

.quality__div__p span {
    font-size: 1.16em;
    font-weight: 700;
}

.quality__div__imgGMP {
    width: 100%;
    aspect-ratio: 825/484;
    margin-bottom: 2.4rem;
    -webkit-box-shadow: 3px 3px 6px 0px rgba(0, 0, 0, 0.5);
            box-shadow: 3px 3px 6px 0px rgba(0, 0, 0, 0.5);
}

.quality__imgGMP {
    width: 94%;
    aspect-ratio: 849/138;
}

.quality__imgKapsel {
    width: 100%;
    aspect-ratio: 900/619;
    margin-block: 2.4rem 1.8rem;
}

.quality__div__pLast {
    margin-top: 1.3rem;
    font-size: 1.39rem;
    font-weight: 700;
    line-height: 1.5;
    text-align: left;
}

/******************
メッセージ
*******************/

.message {
    padding-block: 3.3rem 6rem;
    background: center top/cover no-repeat;
}

.message__h2 {
    padding: 6.4rem 0% 1rem 0;
    margin-bottom: 2.2rem;
    font-family: var(--mincho);
    font-size: 1.55rem;
    font-weight: 500;
    text-align: right;
    background: left bottom/94% no-repeat;
}

.message__p {
    width: 86%;
    margin-bottom: 1.7rem;
    letter-spacing: 1px;
    font-size: 1.0rem;
    line-height: 1.8;
    text-align: left;
    font-family: var(--gothic);
}

/******************
心強い味方
*******************/

.pharmacist {
    position: relative;
    width: 100%;
    aspect-ratio: 885/983;
    padding-top: 4rem;
    background: url() center top / contain no-repeat;
}

.pharmacist__pTitle {
    font-size: 2.2rem;
    font-weight: 300;
    line-height: 1.34;
    font-family: var(--mincho);
    font-style: italic;
}

.pharmacist__pTitle span.s {
    font-size: .8em;
}

.pharmacist__figure {
    position: absolute;
    top: 11.4rem;
    left: 9%;
    width: 34%;
}

.pharmacist__figure__img {
    width: 100%;
    aspect-ratio: 180 / 229;
    -o-object-fit: cover;
       object-fit: cover;
    -o-object-position: calc(100% + 1.6rem) center;
       object-position: calc(100% + 1.6rem) center;
 }

 .pharmacist__figure__figcaption div {
    margin-top: .2rem;
    padding-right: 3%;
    color: #fff;
    font-size: .85rem;
    text-align: right;
    background: #BD924C;
 }

 .pharmacist__figure__figcaption p {
    margin-top: .4rem;
    font-size: .37rem;
    line-height: 1.9;
    text-align: left;
}

.pharmacist__p {
    position: absolute;
    top: 11.2rem;
    right: 8%;
    width: 47%;
    font-size: .8rem;
    line-height: 1.92;
    text-align: left;
 }

 .pharmacist__p span {
    color: var(--accent);
 }

/******************
コンテンツcss
*******************/

.accent {
    color: var(--accent);
}

/* 特典セクション */
.benefits {
    padding: 30px 15px;
    background-color: #fff;
}

.benefits_tlt img{
    width: 60%;
    margin: 0 auto;
}
.benefits-box {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
}

.benefit-item {
    width: 45%;
    background: #f7f3ef;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.1);
}

.benefit-number {
    font-size: 16px;
    font-weight: bold;
    color: #fff;
    background: #2e3a59;
    padding: 5px 10px;
    border-radius: 5px;
    display: inline-block;
}

.highlight {
    color: #b30000;
    font-weight: bold;
}

/* 初回特典 */
.first-time-offer {
    background-color: #fff3f0;
    padding: 20px;
    margin-top: 30px;
}

.offer-title {
    font-size: 22px;
    color: #b30000;
}

.highlight-red {
    color: red;
    font-weight: bold;
}

/* 価格情報 */
.price-section {
    background-color: #fff;
    padding: 25px;
    margin-top: 30px;
}

.price-title {
    font-size: 22px;
    color: #b30000;
}

.product-image {
    width: 60%;
    margin: 15px 0;
}

.original-price {
    text-decoration: line-through;
    color: gray;
}

.special-price {
    font-size: 28px;
    color: #d9333f;
    font-weight: bold;
}

.price-tags {
    margin-top: 10px;
}

.tag {
    background: #d9333f;
    color: white;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 14px;
    margin: 3px;
}

/* 注意喚起セクション */
.caution-section {
    background: #333;
    padding: 20px;
    margin: 30px 0 30px;
}

.caution-title {
    font-size: 18px;
    color: #fff;
}

.caution-text {
    font-size: 14px;
    color: #e9e22e;
}

/* ===== フッター全体のスタイル ===== */
/* ===== フッター全体のスタイル ===== */
.footer_new {
    text-align: center;
    background: #f5f5f5;
    padding: 20px;
    margin-top: 30px;
    border-top: 1px solid #ddd;
}

/* ===== ロゴのスタイル ===== */
.footer_new .logo img {
    width: 150px;
    margin-bottom: 10px;
}

/* ===== フッターの説明文 ===== */
.footer_new p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto 15px auto;
}

/* ===== 会社情報リンクのスタイル ===== */
.kaisya {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

.kaisya a {
    color: #444;
    text-decoration: none;
    font-size: 13px;
    white-space: nowrap; /* リンクが途中で折り返されないように */
}

.kaisya a:hover {
    text-decoration: underline;
    color: #222;
}

/* ===== 著作権表示のスタイル ===== */
.kaisya div {
    width: 100%;
    text-align: center;
    font-size: 12px;
    color: #777;
    margin-top: 10px;
}


/* =========================
   不正転売セクション
========================= */
.attention {
    margin: 1.2em 1em 1.8em;
    padding: .8em 1em;
    border-left: 4px solid #5C3100;
    background-color: #fdf8f5;
}

.attention h2 {
    margin: 0 0 .4em;
    font-size: .85rem;
    font-weight: bold;
    font-family: var(--gothic);
    text-align: left;
    color: #5C3100;
}

.attention p {
    margin: 0;
    font-size: .75rem;
    line-height: 1.8;
    text-align: left;
    color: #555;
}

/* =========================
   アコーディオン（お支払い・返品・配送等）
========================= */
.accordion .toggle {
    display: none;
}

.accordion .Label {
    display: block;
    cursor: pointer;
    padding: .7em 1em;
    font-size: .85rem;
    font-weight: bold;
    font-family: var(--gothic);
    background-color: #5C3100;
    color: #fff;
    border-top: 1px solid rgba(255,255,255,.2);
    position: relative;
}

.accordion .Label::after {
    content: '▼';
    position: absolute;
    right: 1em;
    font-size: .7em;
    transition: transform .2s;
}

.accordion .toggle:checked + .Label::after {
    transform: rotate(-180deg);
}

.accordion .Label.fontRed {
    background-color: #a00;
}

.accordion .content {
    display: none;
    padding: 1em;
    background-color: #fff;
    font-size: .78rem;
    line-height: 1.9;
    font-family: var(--gothic);
    text-align: left;
}

/* index.css の h1,h2,p,small { text-align:center } を上書き */
.accordion .content h2,
.accordion .content h3,
.accordion .content p,
.accordion .content li,
.accordion .content ol,
.accordion .content ul,
.accordion .content dd {
    text-align: left;
    margin: 0;
}

.accordion .toggle:checked ~ .content {
    display: block;
}

/* リスト内インナー */
.listInner {
    display: block;
    padding: .3em 0 .3em 1.5em;
    font-size: .78rem;
    line-height: 1.8;
    color: #555;
}

/* 商品詳細ボックス */
.Contents {
    padding: .5em 1em 1em;
    background: #fafafa;
    border: 1px solid #e0e0e0;
    margin-bottom: 1em;
}

.box {
    margin-bottom: .8em;
}

.boxTitle {
    font-weight: bold;
    margin-bottom: .2em;
    font-size: .82rem;
}

.boxInner {
    font-size: .78rem;
    line-height: 1.8;
    padding-left: .5em;
}

/* ===== 後払いテーブル ===== */
.payment-info-table {
    width: 100%;
    max-width: 350px;
    border-collapse: collapse;
    margin: 10px 0;
}

.payment-info-table td {
    padding: 8px 10px;
    border: 1px solid #ccc;
    vertical-align: middle;
    font-size: .78rem;
    line-height: 1.6;
}

.payment-info-table td.lbl {
    background-color: #F0F0F0;
    white-space: nowrap;
}

/* =========================
   CART responsive patch
   LPは触らず、#cart_areaだけ整える
========================= */
#cart_area{
  padding-top: 40px;        /* 既存維持 */
  padding-left: 12px;
  padding-right: 12px;
  box-sizing: border-box;
}

#cart_area .cart_inner{
  max-width: 900px;         /* LPと揃えるなら900 */
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}

/* はみ出しが起きやすい要素を“幅100%に寄せる” */
#cart_area img,
#cart_area svg,
#cart_area video,
#cart_area canvas{
  max-width: 100%;
  height: auto;
}

/* テーブルが原因でPC/SPで崩れるのを抑止 */
#cart_area table{
  width: 100% !important;
  max-width: 100%;
  box-sizing: border-box;
}

/* フォーム部品が親幅からはみ出すのを抑止 */
#cart_area input,
#cart_area select,
#cart_area textarea,
#cart_area button{
  max-width: 100%;
  box-sizing: border-box;
}

/* 万一の横はみ出し保険（カート内だけ） */
#cart_area{
  overflow-x: hidden;
}