* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #e4ecf4;
    font-family: 'Helvetica Neue', Arial, sans-serif;
    color: #333;
}

body.no-scroll {
    overflow: hidden;
}

/* --- ヘッダー（ここが最前面） --- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100px; /* 少し余裕を持たせる */
    z-index: 1000; /* メニュー(500)より必ず上 */
    pointer-events: none; /* ヘッダーの透明部分がクリックを邪魔しないようにする */
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    padding: 0 40px;
    pointer-events: auto; /* ロゴとボタンだけクリックを有効に戻す */
}

.header-logo a {
    max-width: 500px;
    width: 100%;
    display: inline-block;
    margin: 20px auto;
}

.header-logo a img {
    width: 100%;
}

/* --- ハンバーガーボタン --- */
.menu-trigger {
    width: 30px;
    height: 20px;
    position: relative;
    cursor: pointer;
    z-index: 1001; /* 絶対に一番上 */
}

.menu-trigger span {
    display: block;
    width: 100%;
    height: 2px;
    background: #fff;
    position: absolute;
    transition: all 0.4s ease-in-out;
}

.menu-trigger span:first-child { top: 0; }
.menu-trigger span:last-child { bottom: 0; }

/* ×アニメーション */
.menu-trigger.active span:first-child {
    transform: translateY(9px) rotate(45deg);
}
.menu-trigger.active span:last-child {
    transform: translateY(-9px) rotate(-45deg);
}

/* --- 全画面メニュー --- */
.full-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: #e4ecf4; /* 背景色と同じ */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 500;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.full-menu.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.full-menu ul {
    list-style: none;
    text-align: center;
}

.full-menu ul li {
    margin: 30px 0;
}

.full-menu ul li a {
    font-size: clamp(32px, 8vw, 60px); /* 画面サイズに合わせて可変 */
    font-weight: 900;
    text-decoration: none;
    color: #fff;
    transition: opacity 0.3s;
}

.full-menu ul li a:hover {
    opacity: 0.4;
}

/* --- フッター --- */
.site-footer {
    padding: 40px;
    text-align: center;
    font-size: 11px;
    letter-spacing: 0.1em;
}

/* --- トップ --- */
.container {
    margin-top: 100px;
}

.inner {
    max-width: 1280px;
    width: 100%;
    margin: 0 auto;
}

.sec{
    padding: 30px 0;
}

.product-box{
    display: flex;
    justify-content: space-between;
    margin: 50px auto;
    flex-wrap: wrap;
}

.product-box li{
    width: calc(100% / 3 - 50px);
    margin: 20px;
    padding: 30px;
    background: #fff;
}

.product-box li img{
    width: 100%;
}



@media screen and (max-width: 768px){

    .header-logo a {
        max-width: 300px;
    }

    .sec {
        padding: 10px 0;
    }

    .product-box {
        justify-content: center;
        margin: 20px auto;
    }

    .product-box li {
        width: calc(100% / 2 - 50px);
    }
    
}