/*
 * nmlmain.css — Nakatani MiraiLab
 * ============================================================
 * デザイン方針: 白基調・余白重視・カード型レイアウト
 * ▼ テーマカラー変更はここだけ ▼
 * ============================================================
 */

:root {
    /* --- テーマカラー --- */
    --c-school: #1e6b3a;
    /* 学校カラー：深緑 */
    --c-school-mid: #2e9050;
    /* 中明度緑（ホバー等） */
    --c-school-pale: #eaf4ee;
    /* 淡緑（背景・縞等） */
    --c-found: #1040a0;
    /* 財団カラー：深青 */
    --c-found-pale: #e8eef8;
    /* 淡青（背景） */
    --c-accent: #e85c00;
    /* アクセント（CTA） */

    /* --- テキスト --- */
    --c-text: #1a1a1a;
    --c-text-sub: #666;
    --c-text-inv: #fff;
    --c-link: var(--c-found);

    /* --- 背景 --- */
    --c-bg-white: #fff;
    --c-bg-header: rgba(255, 255, 255, .95);

    /* --- ボーダー・影 --- */
    --c-border: #e0e0e0;
    --shadow: 0 2px 16px rgba(0, 0, 0, .07);
    --shadow-hover: 0 6px 28px rgba(0, 0, 0, .13);

    /* --- レイアウト --- */
    --max-w: 1160px;
    --header-h: 68px;

    /* --- 角丸 --- */
    --r-sm: 4px;
    --r-md: 10px;
    --r-lg: 18px;
}


/* ============================================================
   リセット
   ============================================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body,
div,
section,
article,
p,
a,
img,
figure,
h1,
h2,
h3,
h4,
dl,
dt,
dd,
ul,
li,
header,
footer,
main,
aside {
    margin: 0;
    padding: 0;
}

html {
    font-size: 100%;
    scroll-behavior: smooth;
}

/* 動くグラデーション背景（fixed擬似要素で全ブラウザ対応） */
html::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    background: linear-gradient(125deg,
            #6fa882 0%,
            #7a9cc8 25%,
            #5d8a9e 50%,
            #7db88a 75%,
            #6fa882 100%);
    background-size: 300% 300%;
    animation: bg-shift 30s ease infinite;
}

body {
    font-family: 'Noto Serif JP', 'Yu Mincho', 'YuMincho', '游明朝',
        'Hiragino Mincho ProN', 'Hiragino Mincho Pro', 'ヒラギノ明朝 ProN',
        'MS Mincho', 'MS 明朝', serif;
    color: var(--c-text);
    background: transparent;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: var(--c-link);
}

dt {
    font-weight: bold;
}

dd {
    margin-left: 1.5em;
}


/* ============================================================
   ヘッダー
   ============================================================ */
header#header {
    width: 100%;
    position: fixed;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.35);
    transition: background .35s, box-shadow .35s;
}

header#header.scroll-nav {
    background: rgba(255, 255, 255, 0.88);
    box-shadow: 0 1px 0 var(--c-border), 0 4px 16px rgba(0, 0, 0, .06);
}

/* ── ヘッダー内部レイアウト ── */
.site-header {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
    height: var(--header-h);
    display: flex;
    align-items: center;
    gap: 16px;
    position: relative;
}

/* ── ロゴ ── */
.site-header__logo {
    font-size: 1rem;
    font-weight: 700;
    color: rgba(0, 0, 0, .95);
    text-decoration: none;
    letter-spacing: .04em;
    white-space: nowrap;
    text-shadow: 0 1px 4px rgba(0, 0, 0, .3);
    flex-shrink: 0;
    z-index: 103;
    /* ドロワー(105)・オーバーレイ(104)より下に */
}

.site-header__logo img {
    height: 50px;
    width: auto;
    display: block;
}

header#header.scroll-nav .site-header__logo {
    color: var(--c-school);
    text-shadow: none;
}

/* ── PC ナビ ── */
.site-header nav {
    margin-left: auto;
}

.site-header nav ul {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-header nav ul li a {
    display: block;
    padding: 6px 16px;
    font-size: .875rem;
    font-weight: 600;
    color: rgba(0, 0, 0, 0.92);
    text-decoration: none;
    border-radius: var(--r-sm);
    letter-spacing: .04em;
    text-shadow: 0 1px 4px rgba(0, 0, 0, .2);
    transition: color .2s, background .2s;
}

.site-header nav ul li a:hover {
    background: rgba(255, 255, 255, .25);
    color: #fff;
}

header#header.scroll-nav .site-header nav ul li a {
    color: var(--c-text);
    text-shadow: none;
}

header#header.scroll-nav .site-header nav ul li a:hover {
    color: var(--c-school);
    background: var(--c-school-pale);
}

/* ── ハンバーガーボタン（スマホのみ表示） ── */
.site-header__hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    margin-left: auto;
    z-index: 110;
}

.site-header__hamburger span {
    display: block;
    width: 100%;
    height: 2.5px;
    background: #111;
    border-radius: 2px;
    transition: transform .3s, opacity .3s, background .3s;
}

header#header.scroll-nav .site-header__hamburger span {
    background: var(--c-school);
}

.site-header__hamburger.is-open span:nth-child(1) {
    transform: translateY(7.5px) rotate(45deg);
}

.site-header__hamburger.is-open span:nth-child(2) {
    opacity: 0;
}

.site-header__hamburger.is-open span:nth-child(3) {
    transform: translateY(-7.5px) rotate(-45deg);
}

/* ── スマホ ドロワーメニュー ── */
@media (max-width: 768px) {
    .site-header {
        padding: 0 20px;
    }

    .site-header__hamburger {
        display: flex;
    }

    .site-header nav {
        position: fixed;
        top: 0;
        right: 0;
        width: min(280px, 80vw);
        height: 100dvh;
        background: rgba(255, 255, 255, 0.97);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        box-shadow: -4px 0 24px rgba(0, 0, 0, .15);
        padding: calc(var(--header-h) + 16px) 0 32px;
        margin-left: 0;
        transform: translateX(110%);
        transition: transform .35s cubic-bezier(.4, 0, .2, 1);
        z-index: 105;
        overflow-y: auto;
    }

    .site-header nav.is-open {
        transform: translateX(0);
    }

    .site-header nav ul {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .site-header nav ul li a {
        color: var(--c-text);
        text-shadow: none;
        font-size: 1rem;
        padding: 16px 28px;
        border-radius: 0;
        border-bottom: 1px solid var(--c-school-pale);
    }

    .site-header nav ul li a:hover {
        background: var(--c-school-pale);
        color: var(--c-school);
    }

    .site-header__overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, .35);
        z-index: 104;
    }

    .site-header__overlay.is-open {
        display: block;
    }
}


/* ============================================================
   共通レイアウト
   ============================================================ */
.wrapper {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 40px 40px 100px;
}

.jd-section-title,
.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--c-text);
    text-align: center;
    margin: 48px 0 32px;
    line-height: 1.3;
    letter-spacing: .02em;

    &::before {
        content: none;
    }

    &::after {
        content: '';
        display: block;
        width: 48px;
        height: 3px;
        margin: 14px auto 0;
        border-radius: 2px;
        background: linear-gradient(to right, var(--c-school), var(--c-found));
    }

    & .jd-section-title__en {
        display: block;
        font-size: .75rem;
        font-weight: 600;
        letter-spacing: .18em;
        color: var(--c-school);
        margin-bottom: 8px;
        text-transform: uppercase;
    }
}

.section-text {
    text-align: center;
    font-size: 1.05rem;
    max-width: 720px;
    margin: 0 auto 40px;
    color: var(--c-text-sub);
    line-height: 1.85;
}


/* ============================================================
   メインビジュアル
   ============================================================ */
#mainvisual {
    height: 440px;
    position: relative;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;

    /* 鳥海山背景画像 */
    &::before {
        content: '';
        position: absolute;
        inset: 0;
        z-index: 0;
        background: url('./img/home_bgi_new.jpg') center center / cover no-repeat;
        opacity: 0.5;
    }

    & .top-title {
        position: absolute;
        z-index: 10;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        text-align: center;
        width: 100%;
        padding: 0 20px;

        & .site-title {
            font-size: 3.4rem;
            font-weight: 800;
            color: var(--c-text-inv);
            text-shadow: 0 4px 16px rgba(0, 0, 0, .45);
            text-align: center;
            letter-spacing: .08em;
            line-height: 1.3;

            & .small {
                display: block;
                font-size: 1.2rem;
                color: rgba(255, 255, 255, .75);
                text-shadow: 0 2px 8px rgba(0, 0, 0, .3);
                font-weight: 500;
                letter-spacing: .22em;
                margin-top: 8px;
                text-transform: uppercase;
            }
        }
    }

    & .fade li {
        max-width: 100%;
        position: absolute;
        inset: 0;
        opacity: 0;
        animation: fade 25s infinite;
        list-style: none;
        z-index: 1;

        &:nth-child(1) {
            animation-delay: 0s;
        }

        &:nth-child(2) {
            animation-delay: 5s;
        }

        &:nth-child(3) {
            animation-delay: 10s;
        }

        &:nth-child(4) {
            animation-delay: 15s;
        }

        &:nth-child(5) {
            animation-delay: 20s;
        }

        & img {
            width: 100%;
            height: 660px;
            object-fit: cover;
        }

        &::after {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(0, 0, 0, .28);
        }
    }

    @media (max-width: 746px) {
        height: 460px;

        & .top-title .site-title {
            font-size: 2.2rem;
        }

        & .top-title .site-title .small {
            font-size: 1rem;
        }

        & .fade li img {
            height: 460px;
        }
    }

    @media (max-width: 499px) {
        & .top-title .site-title {
            font-size: 1.7rem;
        }

        & .top-title .site-title .small {
            font-size: .85rem;
        }
    }
}

/* .site-title--centered
   h1にこのクラスを付けると中の要素がすべてセンター揃えになる */
.site-title--centered {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.site-title--centered img {
    display: block;
    margin: 0 auto;
    max-width: 100%;
    height: auto;
}

.mainvisual-logo {
    display: block;
    margin: 0 auto 16px;
    height: 175px;
    width: auto;
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--r-md);
}

.mainvisual-inner {
    margin-top: 110px;
}

.mainvisual-img {
    position: relative;
    max-width: 100%;
}

@keyframes bg-shift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

@keyframes fade {

    0%,
    100% {
        opacity: 0;
    }

    15%,
    25% {
        opacity: 1;
    }

    35% {
        opacity: 0;
    }
}


/* ============================================================
   ホームセクション 半透過カード
   ============================================================ */
#home-notice,
#home-class_content,
#home-info {
    background: rgba(255, 255, 255, 0.80);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--r-lg);
    margin-bottom: 32px;
}


/* ============================================================
   新着情報
   ============================================================ */
.notice {
    & li {
        border-bottom: 1px solid var(--c-border);
        list-style: none;
        padding: 12px 8px;
        width: 800px;
        margin: 0 auto;
        transition: background .15s;

        &:hover {
            background: var(--c-school-pale);
        }

        & a {
            color: var(--c-text);
            text-decoration: none;
            display: flex;
            align-items: baseline;
            flex-wrap: wrap;
            gap: 10px;

            & .news-title {
                background: var(--c-found);
                border-radius: var(--r-sm);
                color: var(--c-text-inv);
                font-size: .78rem;
                padding: 3px 10px;
                white-space: nowrap;
                flex-shrink: 0;
            }

            & time {
                font-weight: 600;
                font-size: .88rem;
                color: var(--c-text-sub);
                white-space: nowrap;
            }

            & p {
                color: var(--c-found);
                text-decoration: underline;
            }
        }

        @media (max-width: 746px) {
            padding: 8px 5px;
            width: auto;

            & a {
                font-size: .85rem;
            }
        }
    }
}

.new::after {
    content: "NEW";
    color: #c00;
    font-size: .78rem;
    border: 1px solid #c00;
    padding: 2px 6px;
    margin-left: 12px;
    border-radius: 3px;
    vertical-align: middle;
}

.home-notice-title {
    margin-top: 0;
}


/* ============================================================
   授業内容カード（home-class_content）
   ============================================================ */
#home-class_content {
    padding: 50px 16px;
    margin: -50px auto 10px;

    & .scroll {
        opacity: 0;
    }

    & .show,
    & .grid .show {
        opacity: 1;
        transition: 1s;
        transform: translateY(-50px);
    }

    & .grid {
        display: grid;
        gap: 24px;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));

        & .class_content-item {
            text-decoration: none;
            color: var(--c-text);
        }

        & .item {
            background: var(--c-bg-white);
            border-radius: var(--r-lg);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: box-shadow .25s, transform .25s;

            &:hover {
                box-shadow: var(--shadow-hover);
                transform: translateY(-3px);
            }
        }

        & img {
            height: 240px;
            width: 100%;
            object-fit: cover;
        }

        & .item-content {
            padding: 22px 24px;
        }

        & .item-cat {
            font-size: .8rem;
            font-weight: 600;
            color: var(--c-found);
            margin-bottom: 10px;
            letter-spacing: .06em;
        }

        & .item-text {
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 14px;
            line-height: 1.5;
        }

        & .item-date {
            font-size: .8rem;
            color: var(--c-text-sub);
            text-align: right;
        }
    }
}

.class_content-item>.item:hover {
    opacity: 1;
}

.home-class_content-btn {
    text-align: center;
    margin-top: 40px;

    & a {
        display: inline-block;
        text-decoration: none;
        color: var(--c-text-inv);
        background: var(--c-school);
        padding: 12px 40px;
        border-radius: 100vmax;
        font-size: 1rem;
        font-weight: 600;
        letter-spacing: .06em;
        transition: background .2s;

        &:hover {
            background: var(--c-school-mid);
        }
    }
}


/* ============================================================
   アクセス（home-info）
   ============================================================ */
#home-info {
    background: var(--c-bg-white);
    padding: 60px;
    margin: 60px 0;

    & img {
        object-fit: cover;
        width: 100%;
        height: 450px;
        border-radius: var(--r-md);
    }

    @media (max-width: 746px) {
        padding: 20px;

        & img {
            height: 200px;
        }
    }
}

.home-info-address_title {
    font-size: 1.8rem;
    color: var(--c-school);

    @media (max-width: 746px) {
        font-size: 1em;
    }
}

.info-item {
    display: flex;
    justify-content: space-evenly;
    align-items: center;
    padding-top: 70px;

    @media (max-width: 1024px) {
        flex-direction: column;
        margin: 0 auto;
    }
}

.info-text .info-small {
    font-size: .9rem;
}

.info-address {
    font-size: 15px;
    letter-spacing: .15em;
    white-space: nowrap;
    line-height: 1.9;
    padding-bottom: 10px;
}

.line-dl {
    & div {
        display: flex;
        border-bottom: 1px solid var(--c-school-pale);
        padding: 11px 5px 14px;
        align-items: flex-start;

        &:first-child {
            border-top: 1px solid var(--c-school-pale);
        }

        & .font-mg {
            width: 110px;
            letter-spacing: .15em;
            white-space: nowrap;
            color: var(--c-school);
            font-size: 15px;
            line-height: 1.9;
        }

        & dd {
            width: calc(100% - 110px);
            font-size: 14px;
            letter-spacing: .04em;
            line-height: 1.9;

            & a {
                color: var(--c-link);

                &:hover {
                    opacity: .7;
                }
            }

            & .info-small {
                font-size: 13px;
            }
        }
    }
}

iframe {
    width: 450px;
    height: 600px;

    @media (max-width: 746px) {
        width: 100%;
        height: 300px;
    }
}

.iframe-wrap {
    @media (max-width: 1024px) {
        padding-top: 50px;
        width: 100%;
    }
}


/* ============================================================
   活動掲載ページ（#active）
   ============================================================ */
#active {
    display: grid;
    grid-template-columns: 1fr 260px;
    gap: 0 40px;
    max-width: 1200px;
    margin: 0 auto;
    padding: calc(var(--header-h) + 32px) 40px 80px;
    align-items: start;
}

#active>.jd-section-title,
#active>.section-title,
#active>.jd-notice-box,
#active>.box {
    grid-column: 1 / -1;
}

#active>.jd-section-title,
#active>.section-title {
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border-radius: var(--r-md);
    padding: 24px 32px 20px;
}

/* ── 記事エリア ── */
.jd-activity,
main.activity {
    grid-column: 1;
}

/* ── 記事カード ── */
.jd-entry,
main.activity article {
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow);
    margin-bottom: 32px;
    padding: 32px 36px;
    border-top: 3px solid var(--c-school);
    transition: box-shadow .2s;

    &:hover {
        box-shadow: var(--shadow-hover);
    }
}

.jd-entry__title,
main.activity article h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--c-text);
    padding-left: 14px;
    border-left: 4px solid var(--c-school);
    margin-bottom: 6px;
    line-height: 1.45;
}

.jd-entry__date,
main.activity article h4 {
    font-size: .82rem;
    color: var(--c-found);
    font-weight: 500;
    padding-left: 14px;
    margin-bottom: 20px;
    letter-spacing: .04em;
}

.jd-entry__body p,
main.activity article p {
    display: block;
    margin-bottom: 18px;
    font-size: .95rem;
    line-height: 1.9;
    color: var(--c-text);
    text-align: left;
}

.jd-entry__body p>a,
main.activity article p>a {
    align-self: flex-start;
}

.jd-entry__body p>ul,
main.activity article p>ul {
    align-self: stretch;
    width: 100%;
}

.jd-entry__body p img,
main.activity article p img {
    display: block;
    margin: 0 auto 14px;
    width: 400px;
    max-width: 400px;
    height: auto;
    max-height: 300px;
    object-fit: cover;
    border-radius: var(--r-md);
    box-shadow: 0 2px 8px rgba(0, 0, 0, .1);
}

.jd-entry__body p img.full,
main.activity article p img.full {
    width: 100%;
    height: auto;
    max-height: 480px;
    flex-shrink: unset;
}

.jd-entry__body a,
main.activity article a {
    color: var(--c-link);

    &:hover {
        color: var(--c-school);
    }
}

/* ── サイドバー ── */
aside#sidebar {
    grid-column: 2;
    position: sticky;
    top: calc(var(--header-h) + 20px);
    max-height: calc(100vh - var(--header-h) - 40px);
    overflow-y: auto;
    scrollbar-width: thin;
}

aside#sidebar #act-list {
    margin-bottom: 20px;
}

.jd-archive,
aside#sidebar section.archive {
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border-radius: var(--r-md);
    box-shadow: var(--shadow);
    padding: 20px;

    & h3 {
        font-size: .82rem;
        font-weight: 700;
        color: var(--c-school);
        letter-spacing: .12em;
        text-transform: uppercase;
        border-bottom: 2px solid var(--c-school-pale);
        padding-bottom: 10px;
        margin-bottom: 12px;
    }

    & ul {
        list-style: none;
        padding: 0;
    }

    & li {
        line-height: 1.4;
        padding: 8px 8px 8px 10px;
        border-bottom: 1px solid rgba(30, 107, 58, 0.2);
        border-left: 3px solid transparent;
        transition: background .15s, border-left-color .15s;

        &:last-child {
            border-bottom: none;
        }

        &:hover {
            background: rgba(234, 244, 238, 0.7);
            border-left-color: var(--c-school);
        }

        & a {
            display: flex;
            flex-direction: column;
            gap: 3px;
            text-decoration: none;
            transition: color .2s;

            &:hover {
                color: var(--c-school);
            }
        }

        & .arch-date {
            font-size: .7rem;
            color: var(--c-found);
            letter-spacing: .04em;
        }

        & .arch-title {
            font-size: .78rem;
            color: var(--c-text-sub);
            line-height: 1.45;
        }

        &:hover .arch-title {
            color: var(--c-school);
        }
    }
}

/* スマホ → 1カラム */
@media (max-width: 768px) {
    #active {
        grid-template-columns: 1fr;
        padding: calc(var(--header-h) + 16px) 20px 60px;
    }

    #active>.jd-section-title,
    #active>.section-title,
    #active>.jd-notice-box,
    #active>.box,
    .jd-activity,
    main.activity,
    aside#sidebar {
        grid-column: 1;
    }

    aside#sidebar {
        position: static;
        max-height: none;
        margin-top: 40px;
    }

    .jd-entry,
    main.activity article {
        padding: 20px 16px;
    }

    .jd-entry__body p,
    main.activity article p {
        display: block;
    }

    .jd-entry__body p img,
    main.activity article p img {
        max-width: 100%;
        max-height: 240px;
    }
}


/* ============================================================
   注意ボックス（.jd-notice-box）
   ============================================================ */
.jd-notice-box,
.box {
    padding: 14px 20px;
    margin: 0 0 32px;
    color: var(--c-text);
    background: rgba(255, 251, 234, 0.88);
    border-left: 5px solid var(--c-accent);
    border-radius: 0 var(--r-sm) var(--r-sm) 0;

    & p {
        text-align: center;
        font-size: 1.1rem;
        margin: 0;
    }

    & a {
        color: var(--c-found);
        font-weight: 600;
    }
}


/* ============================================================
   フッター
   ============================================================ */
footer {
    position: sticky;
    top: 100vh;
    background: linear-gradient(135deg, var(--c-school) 0%, var(--c-found) 100%);
    color: var(--c-text-inv);
    text-align: center;
    font-size: .8rem;
    padding: 32px 20px 24px;
    margin-top: 60px;

    & a {
        color: rgba(255, 255, 255, .8);

        &:hover {
            color: #fff;
        }
    }
}

.site-footer__copy {
    margin-top: 10px;
    font-size: .75rem;
    color: rgba(255, 255, 255, .65);
    letter-spacing: .06em;
}


/* ============================================================
   レスポンシブ
   ============================================================ */
@media (max-width: 746px) {

    .jd-section-title,
    .section-title {
        font-size: 1.25rem;
        margin: 40px 0 28px;

        &::after {
            width: 40px;
        }
    }

    .section-text {
        font-size: .85rem;
    }

    .wrapper {
        padding: 0 20px 40px;
    }

    #mainvisual .top-title .site-title {
        font-size: 1.4rem;
        /* font-size:0 廃止 → 「準備中」等テキストが消えないように */
    }

    #mainvisual .top-title .site-title .mainvisual-logo {
        display: block;
        height: auto;
        width: min(500px, 70vw);
    }
}

/* ============================================================
   活動成果一覧ページ（achievements）
   ============================================================ */
#achievements-page {
    padding: calc(var(--header-h) + 32px) 0 80px;
}

.achievements-inner {
    max-width: 900px;
}

/* 年度ブロック */
.achieve-year-block {
    margin-bottom: 48px;
}

.achieve-year {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--c-text-inv);
    background: linear-gradient(to right, var(--c-school), var(--c-found));
    padding: 10px 20px;
    border-radius: var(--r-sm);
    margin-bottom: 16px;
    letter-spacing: .06em;
}

/* 各カード */
.achieve-card {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 0;
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border-radius: var(--r-md);
    box-shadow: var(--shadow);
    margin-bottom: 12px;
    overflow: hidden;
    transition: box-shadow .2s;

    &:hover {
        box-shadow: var(--shadow-hover);
    }
}

.achieve-date {
    background: var(--c-school-pale);
    color: var(--c-school);
    font-size: .82rem;
    font-weight: 600;
    padding: 16px 14px;
    display: flex;
    align-items: center;
    border-right: 2px solid rgba(30, 107, 58, 0.15);
    line-height: 1.5;
}

.achieve-body {
    padding: 14px 20px;
    font-size: .92rem;
    line-height: 1.85;
    color: var(--c-text);

    & p {
        margin-bottom: 6px;
    }

    & p:last-child {
        margin-bottom: 0;
    }

    & a {
        color: var(--c-found);

        &:hover {
            color: var(--c-school);
        }
    }
}

.achieve-event {
    color: var(--c-text);
}

.achieve-award {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: .85rem;
    font-weight: 600;
    color: var(--c-accent);

    & a {
        color: var(--c-accent) !important;
        text-decoration: underline;

        &:hover {
            opacity: .8;
        }
    }
}

/* 箇条書き */
.achieve-list {
    margin: 8px 0 4px 1.4em;
    padding: 0;
    font-size: .88rem;
    color: var(--c-text-sub);

    & li {
        margin-bottom: 4px;
    }
}

/* スマホ */
@media (max-width: 600px) {
    .achieve-card {
        grid-template-columns: 1fr;
    }

    .achieve-date {
        border-right: none;
        border-bottom: 2px solid rgba(30, 107, 58, 0.15);
        padding: 10px 14px;
    }
}