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

body {
    min-height: 100vh;
    background: #ffffff;
    color: #005c56;
    font-family: "obviously", sans-serif;
    border: 1px solid #005c56;
    padding: 72px 96px;
    display: flex;
    flex-direction: column;
}

/* Header */

.site-header {
    position: relative;
    display: grid;
    grid-template-columns: 330px 1fr auto;
    column-gap: 80px;
    align-items: end;
}

.logo {
    margin: 0;
    line-height: 0;
}

.logo img {
    display: block;
    width: 330px;
    height: auto;
}

.header-center {
    display: flex;
    align-items: flex-end;
    height: 123px;
}

.payoff {
    font-family: "obviously-condensed", sans-serif;
    font-weight: 700;
    font-style: normal;
    font-size: 24px;
    letter-spacing: 0.15em;
    line-height: 1;
    white-space: nowrap;
}

.language {
    font-family: "obviously-condensed", sans-serif;
    font-weight: 500;
    font-size: 22px;
    display: flex;
    gap: 20px;
    align-self: start;
    padding-top: 8px;
}

.language a,
.language .active {
    color: inherit;
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.language a {
    opacity: 0.3;
}

.language a:hover {
    opacity: 0.6;
}

.language .active {
    opacity: 1;
}

/* Main */

.site-main {
    margin-top: 105px;
    max-width: 880px;
}

.intro,
.description {
    font-family: "obviously-condensed", sans-serif;
    font-weight: 500;
    font-size: 45px;
    line-height: 1.1;
    letter-spacing: 0.015em;
    max-width: 800px;
}

.intro {
    margin-bottom: 56px;
}

/* Footer */

.site-footer {
    margin-top: 100px;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 200px;
    font-family: "obviously-condensed", sans-serif;
    font-weight: 700;
    font-size: 22px;
    letter-spacing: 0.10em;
    line-height: 1;
}

.site-footer a {
    color: inherit;
    text-decoration: none;
}

/* Mobile */

@media (max-width: 768px) {
    body {
        padding: 72px 24px 32px;
        border: none;
    }

    .site-header {
        display: block;
    }

    .logo img {
        width: 220px;
    }

    .header-center {
        height: auto;
    }

    .payoff {
        margin-top: 28px;
        font-size: 22px;
        letter-spacing: 0.12em;
        line-height: 1.2;
        white-space: normal;
    }

    .language {
        position: fixed;
        top: 22px;
        right: 24px;
        z-index: 999;
        display: flex;
        gap: 20px;
        font-size: 22px;
        padding-top: 0;
    }

    .site-main {
        margin-top: 80px;
    }

    .intro,
    .description {
        font-size: 34px;
        line-height: 1.1;
    }

    .intro {
        margin-bottom: 48px;
    }

    html[lang="ja"] .intro,
    html[lang="ja"] .description {
        font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
        font-weight: 500;
        font-size: 28px;
        line-height: 1.55;
        letter-spacing: 0.02em;
    }

    html[lang="ja"] .intro {
        margin-bottom: 48px;
    }

    .site-footer {
        display: block;
        margin-top: 80px;
    }

    .site-footer a {
        display: block;
        margin-top: 20px;
    }
}