.image-box {
    position: relative;
    width: 100%;
    max-width: 100%;
    overflow: hidden;
}

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    width: 100%;
    padding: 18px clamp(18px, 2.4vw, 40px);
    background: rgba(255, 255, 255, 0.48);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    width: min(100%, 1800px);
    margin: 0 auto;
}

.site-header__brand {
    display: inline-flex;
    align-items: center;
    color: #111;
    text-decoration: none;
    flex-shrink: 0;
}

.site-header__logo {
    width: 100%;
}

.site-header__nav {
    margin-left: auto;
}

.site-header__toggle {
    display: none;
    position: relative;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
    flex-shrink: 0;
}

.site-header__toggle-line {
    position: absolute;
    left: 6px;
    width: 32px;
    height: 2px;
    background: #111;
    transition: transform 0.28s ease, opacity 0.28s ease;
    transform-origin: center;
}

.site-header__toggle-line:nth-child(1) {
    top: 14px;
}

.site-header__toggle-line:nth-child(2) {
    top: 24px;
}

.site-header__menu {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 10px clamp(18px, 2vw, 40px);
    list-style: none;
}

.site-header__link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: #111;
    font-size: clamp(13px, 0.92vw, 16px);
    line-height: 1.2;
    letter-spacing: 0.08em;
    text-decoration: none;
    white-space: nowrap;
}

.site-header__link::before {
    content: "";
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #111;
    flex-shrink: 0;
}

.site-header__link:hover {
    opacity: 0.7;
}

.site-header__brand,
.site-header__link,
.footer-link {
    transition: transform 0.28s ease, opacity 0.28s ease, filter 0.28s ease;
    will-change: transform;
}

.footer-base-image {
    width: 100%;
}

.footer-overlay {
    --footer-side-padding: clamp(56px, 5vw, 104px);
    --footer-content-max-width: 1540px;
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 138px var(--footer-side-padding) 52px;
    color: #fff;
}

.footer-main {
    position: relative;
    top: 224px;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    width: min(100%, var(--footer-content-max-width));
    margin: 0 auto;
    gap: clamp(44px, 5vw, 96px);
    padding-inline: 0;
}

.footer-brand {
    width: clamp(360px, 28vw, 470px);
    flex-shrink: 0;
}

.footer-logo {
    margin-bottom: 44px;
}

.footer-company-text {
    position: relative;
    top: 0;
    left: 0;
    margin-top: 10px;
    font-size: clamp(12px, 0.85vw, 17px);
    line-height: 2.4;
    letter-spacing: 0.06em;
}

.footer-nav {
    display: flex;
    flex: 1;
    align-items: flex-start;
    justify-content: space-between;
    padding-top: 10px;
}

.footer-column {
    min-width: 0;
    width: min(100%, 260px);
}

.footer-link {
    display: inline-block;
    color: inherit;
    text-decoration: none;
}

.footer-column-title {
    margin-bottom: 48px;
    font-size: clamp(16px, 3vw, 32px);
    letter-spacing: 0.08em;
}

.footer-column-list {
    display: grid;
    grid-template-rows: minmax(clamp(78px, 6vw, 108px), auto) auto;
    row-gap: 52px;
    align-items: center;
    list-style: none;
}

.footer-column-list--policy {
    grid-template-rows: none;
    row-gap: 22px;
    align-items: start;
}

.footer-column-item {
    position: relative;
    padding-left: 28px;
    margin-bottom: 0;
    font-size: clamp(13px, 1vw, 20px);
    line-height: 1.8;
    letter-spacing: 0.04em;
}

.footer-column-item::before {
    content: "";
    position: absolute;
    top: 0.4em;
    left: 0;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #73d7de;
}

.footer-column-item-multiline::before {
    top: 50%;
    transform: translateY(-50%);
}

.footer-column-item-contact {
    --footer-contact-offset-x: -4px;
    --footer-contact-offset-y: -6px;
    padding-left: 0;
    transform: translate(var(--footer-contact-offset-x), var(--footer-contact-offset-y));
}

.footer-column-item-contact::before {
    display: none;
}

.footer-column-item-label {
    padding-left: 0;
    margin-top: 95px;
    font-size: clamp(16px, 3vw, 28px);
    letter-spacing: 0.08em;
    line-height: 1.2;
}

.footer-column-item-label::before {
    display: none;
}

.footer-link-emphasis {
    font-size: clamp(16px, 2vw, 28px);
}

.footer-copyright {
    text-align: center;
    letter-spacing: 0.18em;
}

.only-pc,
.only-sp {
    display: none;
}

@media (hover: hover) and (pointer: fine) {
    .site-header__brand:hover,
    .site-header__link:hover,
    .footer-link:hover {
        transform: scale(1.04);
    }
}

@media screen and (min-width: 768px) {
    .only-pc {
        display: block;
    }
}

@media screen and (max-width: 767px) {
    .only-sp {
        display: block;
        margin: 0 auto;
    }

    .site-header {
        padding: 18px 16px 0;
        background: rgba(255, 255, 255, 0.08);
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
    }

    .site-header__inner {
        position: relative;
        flex-direction: row;
        align-items: flex-start;
        gap: 12px;
    }

    .site-header__brand {
        width: min(100%, 100px);
    }

    .site-header__toggle {
        display: inline-flex;
        margin-left: auto;
    }

    .site-header__nav {
        position: absolute;
        top: calc(100% + 10px);
        right: 0;
        width: min(78vw, 280px);
        margin-left: 0;
        opacity: 0;
        pointer-events: none;
        transform: translateY(-10px);
        transition: opacity 0.28s ease, transform 0.28s ease;
    }

    .site-header__menu {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 16px 18px;
        background: #fff;
        border-radius: 16px;
        box-shadow: 0 14px 34px rgba(17, 17, 17, 0.14);
    }

    .site-header__link {
        width: 100%;
        padding: 10px 0;
        font-size: 13px;
    }

    .site-header__link::before {
        width: 8px;
        height: 8px;
    }

    .site-header.is-menu-open .site-header__nav {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
    }

    .site-header.is-menu-open .site-header__toggle-line:nth-child(1) {
        transform: translateY(5px) rotate(45deg);
    }

    .site-header.is-menu-open .site-header__toggle-line:nth-child(2) {
        transform: translateY(-5px) rotate(-45deg);
    }

    .sp-footer-overlay {
        position: absolute;
        inset: 0;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        padding: 108px 32px 24px;
        color: #fff;
    }

    .sp-footer-brand {
        max-width: 220px;
    }

    .sp-footer-logo {
        width: 170px;
        margin-bottom: 26px;
    }

    .sp-footer-company-text {
        font-size: 12px;
        line-height: 2.15;
        letter-spacing: 0.06em;
    }

    .sp-footer-grid {
        display: grid;
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
        column-gap: 28px;
        row-gap: 32px;
        margin-top: 58px;
    }

    .sp-footer-section {
        min-width: 0;
    }

    .sp-footer-section-right {
        grid-column: 2;
        grid-row: 1 / span 2;
    }

    .sp-footer-title {
        margin-bottom: 18px;
        font-size: 16px;
        letter-spacing: 0.08em;
    }

    .sp-footer-contact-link {
        font-size: 18px;
    }

    .sp-footer-policy-title {
        margin-top: 28px;
    }

    .sp-footer-list {
        list-style: none;
    }

    .sp-footer-list--policy {
        display: grid;
        row-gap: 18px;
    }

    .sp-footer-item {
        position: relative;
        padding-left: 16px;
        margin-bottom: 18px;
        font-size: 13px;
        line-height: 1.85;
        letter-spacing: 0.04em;
    }

    .sp-footer-item::before {
        content: "";
        position: absolute;
        top: 0.62em;
        left: 0;
        width: 10px;
        height: 10px;
        border-radius: 50%;
        background: #73d7de;
    }

    .sp-footer-item-multiline::before {
        top: 50%;
        transform: translateY(-50%);
    }

    .sp-footer-item-label {
        padding-left: 0;
        margin-bottom: 0;
        margin-top: 30px;
        font-size: 16px;
        letter-spacing: 0.08em;
        line-height: 1.2;
    }

    .sp-footer-item-sub {
        margin-bottom: 10px;
    }

    .sp-footer-item-sub:last-child {
        margin-bottom: 0;
    }

    .sp-footer-item-label::before {
        display: none;
    }

    .sp-footer-copyright {
        padding-top: 36px;
        text-align: center;
        font-size: 9px;
        letter-spacing: 0.22em;
    }
}

@media (prefers-reduced-motion: reduce) {
    .site-header__brand,
    .site-header__link,
    .footer-link,
    .site-header__nav,
    .site-header__toggle-line {
        transition: none;
    }
}