* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}
main {
    max-width: 960px;
    margin: 80px auto 0;
    padding: 2rem;
}
h1, h2, h3, h4, h5, h6, .h1, .h2, .h3, .h4, .h5, .h6{
    font-family: "YakuHanJPsLight", "proxima-nova", "a-otf-midashi-go-mb31-pr6n", -apple-system, BlinkMacSystemFont, "Avenir Next", "Avenir", "Yu Gothic Medium", "游ゴシック Medium", YuGothic, "游ゴシック体", "ヒラギノ角ゴ ProN W3", "Hiragino Kaku Gothic ProN", "メイリオ", "Meiryo", sans-serif;
}
h1 {
    font-size: 2.5em;
    margin-bottom: 1em;
    transform: translateY(20px);
    transition: opacity 0.5s, transform 0.5s;
}
p {
    margin-bottom: 1em;
    transform: translateY(20px);
    transition: opacity 0.5s, transform 0.5s;
}
/*-------------- 
header 
--------------*/
header {
    background-color: #fff;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}
nav {
    max-width: 1080px;
    margin: 0 auto;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nav-links {
    display: flex;
    gap: 3rem;
}
.nav-links a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s ease;
}
.nav-links a:hover {
    color: #5A31F4;
}
.hamburger {
    display: none;
    cursor: pointer;
}
.hamburger div {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 5px;
    transition: all 0.3s ease;
}
/*-------------- 
main 
--------------*/
/*-------------- 
contents 
--------------*/

.video-container video{
    display: block;
}
.RVideoPF-Player-BCPlayer{
    display: none;
}
@media not all and (min-resolution:.001dpcm) {
    @supports (-webkit-appearance:none) and (stroke-color:transparent) {
        .video-container {
            display: none !important;
        }
    }
}

.conept-title{
    font-size: 2em;
    margin-bottom: 0px;
}
.conept-copy{
    font-size: 1.2em;
}
.concept-article{
    margin-top: 30px;
}
.product-container {
    display: flex;
    gap: 60px;
    align-items: center;
    margin-top: 100px;
}
.video-container {
    flex: 0 0 40%; /* 9:16 aspect ratio */
}
.video-container video {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}
.product-info {
    flex: 1;
}
.title-en {
    font-size: 55px;
    font-weight: 700;
    margin-bottom: .5em;
    line-height: .9;
    color: #1a1a1a;
    letter-spacing: 0.4rem;
}
.title-ja {
    font-size: 24px;
    font-weight: 500;
    margin: 10px 0 20px;
    color: #666;
}
.product-description {
    margin-bottom: 30px;
}
.product-specs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 30px;
}
.spec-item {
    display: flex;
    flex-direction: column;
}
.spec-name {
    font-size: 14px;
    color: #666;
    margin-bottom: 5px;
}
.product-num {
    font-size: 24px;
    font-weight: 700;
    margin-right: 5px;
}
.product-v {
    font-size: 16px;
    color: #666;
}
.button-container {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}
.buy-button {
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    background-color: #000;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}
.buy-button:hover {
    background-color: #357abd;
}
.show-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s, transform 0.5s;
}
.is-visible {
    opacity: 1;
    transform: translateY(0);
}
/*-------------- 
special 
--------------*/
.special-title{
    font-size: 1.5rem;
    font-weight: 700;
    padding: .2em .5em;
    margin: 30px 0;
    color: #423f3f;
    background: #fffaf2;
    border-left: solid 5px #3a2400;
}
.special-sub{
    font-size: 1.2rem;
    margin: 13px 0;
    font-weight: 700;
    color: #423f3f;
    border-bottom: solid 2px #3a2400;
}
.aisatu{
    margin: 100px 0;
}

/*-------------- 
QA 
--------------*/
.qa-title{
    font-size: 2em;
}
.qa-category{
    font-size: 1.5em;
    border-bottom: 1px solid #ddd;
    margin: 30px 0;
}
.accordion {
    margin-bottom: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}
.accordion-header {
    background-color: #fff;
    color: #333;
    cursor: pointer;
    padding: 18px;
    width: 100%;
    text-align: left;
    border: none;
    outline: none;
    transition: 0.4s;
    font-weight: bold;
}
.accordion-header:hover {
    background-color: #ddd;
}
.accordion-content {
    padding: 0 20px 20px;
    background-color: white;
    display: none;
    overflow: hidden;
}
/*-------------- 
footer 
--------------*/
footer {
    background-color:#333;
    padding-bottom:20px;
}

#wrapper {
    margin:0 auto;
    padding:30px 50px 20px;
    background-color:#FFF;
}

.float {
    float:left;
    width:300px;
    margin-right:50px;
}
.end {
    margin-right:0;
}
.foot_h2{
border-bottom:2px solid #333;
    font-size:14px;
    font-weight:bold;
    line-height:28px;
}
.foot_p{
margin-top:10px;
    font-size:12px;
    line-height:22px;
}
#bottom {
    font-size: .7rem;
    text-align:center;
    color:#fff;
    padding: 0 20px 10px;
}

@media screen and (max-width: 768px) {
    .nav-links {
        font-size: 1.2rem;
        font-weight: bold;
        position: fixed;
        right: -100%;
        top: 80px;
        flex-direction: column;
        background-color: #fff;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
    }
    .nav-links.active {
        right: 0;
    }
    .nav-links {
        gap: 0rem;
}
    .nav-links a {
        padding: 35px 0;
        border-top: 1px solid #ddd;
    }
    .logo {
        text-align: center;
    }
    .hamburger {
        display: block;
    }
    .hamburger.active .line1 {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    .hamburger.active .line2 {
        opacity: 0;
    }
    .hamburger.active .line3 {
        transform: rotate(45deg) translate(-5px, -6px);
    }
    .product-container {
        flex-direction: column;
    }
    .title-ja {
        font-size: 20px;
    }
    .button-container {
        flex-direction: column;
    }
    .footer-content {
        flex-direction: column;
    }
    .video-container video{
        display: none;
    }
    .RVideoPF-Player-BCPlayer{
        display: block;
    }
    
}

/* アコーディオン式の詳細栄養成分 */
.nutrition-detail {
    margin-top: 20px;
}

.nutrition-toggle {
    width: 100%;
    padding: 12px;
    background-color: #f5f5f5;
    border: 1px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    text-align: center;
    transition: all 0.3s;
}

.nutrition-toggle:hover {
    background-color: #e8e8e8;
}

.nutrition-content {
    display: none;
}

.nutrition-content.active {
    display: block;
    margin-top: 15px;
}

.nutrition-grid-compact {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    padding: 15px;
    background-color: #fafafa;
    border-radius: 4px;
}

.nutrition-grid-compact .nutrition-item {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    font-size: 13px;
    border-bottom: 1px solid #eee;
}

.nutrition-grid-compact .nutrition-item:last-child {
    border-bottom: none;
}

@media screen and (max-width: 768px) {
    .nutrition-grid-compact {
        grid-template-columns: 1fr;
    }
}