@charset "UTF-8";
/* ====================
common
==================== */
:root {
    --primary-darkGreen: #2F4F4F;
    --primary-darkGreen-rgb: 47, 79, 79;
    --primary-snow: #FFFAFA;
    --primary-snow-rgb: 255, 250, 250;
    --primary-peru: #CD853F;
    --primary-peachBeige: #FFC28E;
}

html {
    font-size: 62.5%;
}

body {
    font-family: 
        'Zen Kaku Gothic New',
        Arial,
        sans-serif;
    font-style: normal;
    color: var(--primary-snow, #FFFAFA);
    background-color: var(--primary-darkGreen, #2F4F4F);
    line-height: 1.8;
    letter-spacing: 0.1em;
}

img{
    max-width: 100%;
    height: auto;
}

.section__title {
    font-size: 5rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-align: center;
    margin-bottom: 120px;
}

a {
    color: var(--primary-peru);
}

a:hover {
    color: var(--primary-peachBeige);
}

.txt__link {
    font-size: 1.6rem;
    letter-spacing: 0.15em;
}

/* common sp */
@media screen and (max-width: 768px) {
    .section__title {
        font-size: 2.8rem;
        font-weight: 700;
        letter-spacing: 0.15em;
        text-align: center;
        margin-bottom: 100px;
    }
}
/* sp 768px */

/* ====================
header
==================== */
.header {
    background: rgba(var(--primary-snow-rgb), 0.8);
    max-width: 100%;
    height: auto;
    padding: 10px 8.5%;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header__title {
    font-size: 3.0rem;
    font-weight: 700;
    letter-spacing: 0.15em;
}

.header__title a {
    color: var(--primary-darkGreen);
    display: flex;
}

/* nav */
.nav__header {
    display: none;
}

 .nav__list {
    display: flex;
    gap: 50px;
} 

.nav__item {
    font-size: 1.8rem;
}

.header__btn {
    display: none;
}

/* header sp */
@media screen and (max-width: 768px) {
    .header {
        background: rgba(var(--primary-snow-rgb), 0.8);
        max-width: 100%;
        height: auto;
        padding: 10px 20px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        position: sticky;
        top: 0;
        z-index: 100;
    }

    .header__title,
    .nav__title {
        font-size: 2.6rem;
        font-weight: 700;
        letter-spacing: 0.15em;
    }

    .nav {
        background: rgba(var(--primary-darkGreen-rgb), 0.8);
        width: 100%;
        min-height: 100vh;
        position: fixed;
        top: 0;
        left: 0;
        z-index: 100;
        transform: translateX(-100%);
        transition: transform 0.4s;
    }

    .nav__header {
        padding: 10px 20px;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .nav__title a {
        color: var(--primary-snow);
        display: flex;
        align-items: center;
    }

    .nav__list {
        text-align: center;
        display: flex;
        flex-direction: column;
        gap: 30px;
        margin-top: 30px;
    }

    .nav__item {
        font-size: 2.8rem;
        font-weight: 700;
        letter-spacing: 0.15em;
    }

    /* .nav.active表示 */
    .nav.active {
        transform: translateX(0);
    }

    .header__btn {
        display: block;
        width: 45px;
        height: 36px;
    }
}
/* sp 768px */

/* ====================
footer
==================== */
.footer {
    padding: 30px 0;
    text-align: center;
}

.copy small {
    font-size: 1.2rem;
    line-height: 0.15em;
}