/* AzLierの共通シェル、ヘッダー、フッター、セクションとグリッド。 */

.shell {
    width: min(calc(100% - 3rem), var(--content-width));
    margin-inline: auto;
}

.site-header {
    position: sticky;
    z-index: 50;
    top: 0;
    color: var(--color-white);
    background: rgb(23 25 31 / 94%);
    border-bottom: 1px solid rgb(255 255 255 / 10%);
    backdrop-filter: blur(14px);
}

.site-header__inner {
    display: flex;
    width: min(calc(100% - 3rem), var(--content-width));
    min-height: var(--header-height);
    margin-inline: auto;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.brand {
    display: inline-flex;
    width: 200px;
    min-height: 44px;
    align-items: center;
}

.brand img {
    width: 100%;
    max-height: 48px;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgb(0 0 0 / 35%));
    transition: filter 180ms ease, transform 180ms ease;
}

.brand:hover img,
.brand:focus-visible img {
    filter: drop-shadow(0 2px 10px rgb(91 216 207 / 45%));
    transform: translateY(-1px);
}

.site-nav {
    display: flex;
    align-items: stretch;
    gap: clamp(1.25rem, 3vw, 2.75rem);
}

.site-nav a {
    position: relative;
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    color: rgb(255 255 255 / 76%);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-decoration: none;
    text-transform: uppercase;
}

.site-nav a::after {
    position: absolute;
    right: 0;
    bottom: 0.35rem;
    left: 0;
    height: 2px;
    content: "";
    background: var(--color-cyan);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 180ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
    color: var(--color-white);
}

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after {
    transform: scaleX(1);
    transform-origin: left;
}

.menu-button {
    display: none;
}

.site-main {
    min-height: calc(100vh - var(--header-height));
    outline: none;
}

.section {
    padding-block: clamp(5rem, 9vw, 8.5rem);
}

.section--light {
    background: var(--color-white);
}

.section--paper {
    background: var(--color-paper);
}

.section--ink {
    color: var(--color-white);
    background: var(--color-ink);
}

.split-layout {
    display: grid;
    grid-template-columns: minmax(240px, 0.75fr) minmax(0, 1.4fr);
    gap: clamp(3rem, 8vw, 8rem);
    align-items: start;
}

.activity-grid {
    display: grid;
    margin-top: clamp(3rem, 6vw, 5rem);
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1px;
    background: rgb(255 255 255 / 17%);
}

.service-grid {
    display: grid;
    margin-top: clamp(2.5rem, 5vw, 4rem);
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
}

.service-grid--detail {
    margin-top: 0;
}

.news-list {
    border-top: 1px solid var(--color-line);
}

.site-footer {
    padding: 4.5rem 0 2rem;
    color: rgb(255 255 255 / 72%);
    background: #101217;
}

.site-footer__inner {
    display: grid;
    width: min(calc(100% - 3rem), var(--content-width));
    margin-inline: auto;
    grid-template-columns: minmax(260px, 1fr) auto auto;
    align-items: start;
    gap: clamp(2rem, 7vw, 6rem);
}

.site-footer__brand {
    display: inline-block;
    margin-bottom: 0.65rem;
    color: var(--color-white);
    font-family: var(--font-display);
    font-size: 1.8rem;
    letter-spacing: -0.05em;
    text-decoration: none;
}

.site-footer p {
    margin-bottom: 0;
}

.footer-nav {
    display: grid;
    gap: 0.65rem;
}

.footer-nav a {
    min-height: 34px;
    color: var(--color-white);
    font-size: 0.87rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-decoration: none;
}

.footer-nav a:hover {
    color: var(--color-cyan);
}

.share-links {
    display: flex;
    gap: 0.7rem;
}

.share-links a {
    display: grid;
    width: 44px;
    height: 44px;
    place-items: center;
    color: var(--color-ink);
    background: var(--color-white);
    border-radius: 50%;
    font-weight: 900;
    text-decoration: none;
}

.share-links a:hover {
    background: var(--color-cyan);
}

.site-footer__copyright {
    width: min(calc(100% - 3rem), var(--content-width));
    margin: 3.5rem auto 0;
    padding-top: 1.5rem;
    border-top: 1px solid rgb(255 255 255 / 13%);
    font-size: 0.74rem;
    letter-spacing: 0.04em;
}

@media (max-width: 900px) {
    .activity-grid {
        grid-template-columns: 1fr;
    }

    .site-footer__inner {
        grid-template-columns: 1fr auto;
    }

    .site-footer__inner > :first-child {
        grid-column: 1 / -1;
    }
}

@media (max-width: 759px) {
    :root {
        --header-height: 68px;
    }

    .shell,
    .site-header__inner,
    .site-footer__inner,
    .site-footer__copyright {
        width: min(calc(100% - 2rem), var(--content-width));
    }

    .brand {
        width: 158px;
    }

    .menu-button {
        display: grid;
        width: 48px;
        height: 48px;
        padding: 12px;
        place-content: center;
        gap: 5px;
        color: var(--color-white);
        background: transparent;
        border: 0;
        border-radius: 50%;
        cursor: pointer;
    }

    .menu-button span {
        display: block;
        width: 23px;
        height: 2px;
        background: currentColor;
        transition: transform 180ms ease, opacity 180ms ease;
    }

    .menu-button[aria-expanded="true"] span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .menu-button[aria-expanded="true"] span:nth-child(2) {
        opacity: 0;
    }

    .menu-button[aria-expanded="true"] span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .site-nav {
        position: absolute;
        top: 100%;
        right: 0;
        left: 0;
        display: grid;
        max-height: 0;
        padding-inline: 1rem;
        overflow: hidden;
        visibility: hidden;
        background: var(--color-ink);
        border-bottom: 1px solid rgb(255 255 255 / 12%);
        gap: 0;
        transition: max-height 220ms ease, visibility 220ms ease;
    }

    .site-nav.is-open {
        max-height: 320px;
        padding-block: 0.75rem 1.25rem;
        visibility: visible;
    }

    .site-nav a {
        min-height: 54px;
        padding-inline: 0.5rem;
        border-bottom: 1px solid rgb(255 255 255 / 10%);
    }

    .site-nav a::after {
        right: auto;
        bottom: 0;
        width: 42px;
    }

    .split-layout,
    .service-grid {
        grid-template-columns: 1fr;
    }

    .site-footer__inner {
        grid-template-columns: 1fr;
    }

    .site-footer__inner > :first-child {
        grid-column: auto;
    }
}