/* ----------------------------------------------------------------
   トップページ（.bd-*）— カスタムHTML「TOP.html」用
   ---------------------------------------------------------------- */
.bd-top-page {
    --bd-top-accent: var(--bd-ocean-mid);
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1.75rem 2.25rem;
    font-family: system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
    color: var(--bd-text);
    position: relative;
    background: linear-gradient(165deg, var(--bd-ocean-glass) 0%, #ffffff 55%, var(--bd-ocean-foam) 100%);
    border-radius: var(--bd-radius-lg);
    border: 1px solid var(--bd-border-soft);
    box-shadow: var(--bd-shadow-card);
    overflow: hidden;
}

.bd-top-page::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(
        90deg,
        var(--bd-ocean-deep),
        var(--bd-ocean-mid),
        var(--bd-ocean-light),
        var(--bd-ocean-bright),
        var(--bd-ocean-light),
        var(--bd-ocean-mid)
    );
}

/* 薄い水紋風（装飾・読みやすさは維持） */
.bd-top-page::after {
    content: "";
    position: absolute;
    right: -20%;
    bottom: -30%;
    width: 55%;
    height: 55%;
    background: radial-gradient(circle at center, rgba(94, 179, 212, 0.12) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.bd-top-page > * {
    position: relative;
    z-index: 1;
}

.bd-top-page__header {
    margin-bottom: 1.75rem;
}

.bd-top-page__title {
    margin: 0;
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 700;
    letter-spacing: 0.02em;
    line-height: 1.35;
}

.bd-top-page__title::after {
    content: "";
    display: block;
    width: 3.5rem;
    height: 4px;
    margin-top: 0.85rem;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--bd-ocean-bright), var(--bd-ocean-light), transparent);
}

.bd-top-page__title-name {
    color: var(--bd-ocean-mid);
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.8);
}

.bd-top-page__concept {
    margin-bottom: 2rem;
    padding: 1.4rem 1.35rem 1.5rem;
    background: rgba(255, 255, 255, 0.85);
    border-radius: var(--bd-radius-md);
    border: 1px solid rgba(26, 95, 138, 0.1);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.bd-top-page__concept-heading {
    margin: 0 0 1.25rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--bd-ocean-mid);
    letter-spacing: 0.04em;
    border-left: 4px solid var(--bd-ocean-mid);
    padding-left: 1rem;
}

.bd-top-page__concept-body {
    display: flex;
    flex-wrap: wrap;
    gap: 1.75rem;
    align-items: flex-start;
}

.bd-top-page__concept-text {
    flex: 1 1 0;
    min-width: min(100%, 17.5rem);
    /* 日本語：禁則処理を厳しめに（ブラウザ・フォント依存で挙動差あり） */
    line-break: strict;
    word-break: normal;
}

.bd-top-page__concept-text p {
    margin: 0 0 1.25em;
    line-height: 1.85;
    font-size: 0.95rem;
    color: var(--bd-text-muted);
}

.bd-top-page__concept-text p:last-child {
    margin-bottom: 0;
}

.bd-top-page__concept-image {
    flex: 0 1 350px;
    max-width: 100%;
}

.bd-top-page__concept-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--bd-radius-md);
}

/* TOP.html：狭い画面では画像を下段に */
@media screen and (max-width: 768px) {
    .bd-top-page__concept-image {
        flex: 1 1 100%;
    }

    .bd-top-page__concept-heading {
        font-size: 1.35rem;
    }
}

/* トップ：店舗情報への強調導線 */
.bd-top-cta-shop {
    margin: 0 0 2rem;
}

.bd-top-cta-shop__link {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem 1.25rem;
    padding: 1.25rem 1.35rem;
    text-decoration: none;
    color: #fff;
    background: linear-gradient(135deg, var(--bd-ocean-deep) 0%, var(--bd-ocean-mid) 50%, var(--bd-ocean-bright) 100%);
    border-radius: var(--bd-radius-md);
    border: 2px solid rgba(12, 45, 66, 0.85);
    box-shadow:
        0 4px 18px rgba(12, 45, 66, 0.32),
        inset 0 1px 0 rgba(255, 255, 255, 0.14);
    transition: transform 0.15s ease, box-shadow 0.2s ease;
}

.bd-top-cta-shop__link:hover {
    transform: translateY(-2px);
    box-shadow:
        0 10px 28px rgba(12, 45, 66, 0.38),
        inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.bd-top-cta-shop__link:focus-visible {
    outline: 3px solid var(--bd-accent-warm);
    outline-offset: 3px;
}

.bd-top-cta-shop__inner {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    min-width: 0;
    text-align: left;
}

.bd-top-cta-shop__eyebrow {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    opacity: 0.92;
}

.bd-top-cta-shop__title {
    font-size: clamp(1.15rem, 3.5vw, 1.45rem);
    font-weight: 800;
    line-height: 1.25;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.bd-top-cta-shop__desc {
    font-size: 0.88rem;
    font-weight: 500;
    opacity: 0.95;
    line-height: 1.45;
}

.bd-top-cta-shop__action {
    flex-shrink: 0;
    padding: 0.65rem 1.1rem;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--bd-ocean-deep);
    background: #fff;
    border-radius: 999px;
    box-shadow: 0 2px 10px rgba(12, 45, 66, 0.14);
}

.bd-top-cta-shop__link:hover .bd-top-cta-shop__action {
    background: var(--bd-accent-warm);
    color: var(--bd-ocean-deep);
}

@media screen and (max-width: 480px) {
    .bd-top-cta-shop__link {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }

    .bd-top-cta-shop__inner {
        text-align: center;
    }

    .bd-top-cta-shop__action {
        text-align: center;
    }
}

.bd-top-banners {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    align-items: stretch;
    margin-top: 0.25rem;
}

@media screen and (max-width: 640px) {
    .bd-top-banners {
        grid-template-columns: 1fr;
    }
}

.bd-course-banner {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    background: linear-gradient(180deg, #f5fbfe 0%, var(--bd-ocean-foam) 100%);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--bd-border-soft);
    box-shadow: 0 4px 16px rgba(12, 45, 66, 0.07);
    transition: box-shadow 0.2s ease, transform 0.15s ease;
}

.bd-course-banner:hover {
    box-shadow: 0 8px 28px rgba(12, 45, 66, 0.12);
    transform: translateY(-2px);
}

.bd-course-banner:focus-visible {
    outline: 3px solid var(--bd-ocean-mid);
    outline-offset: 2px;
}

.bd-course-banner__badge {
    display: block;
    background: linear-gradient(90deg, var(--bd-ocean-deep), var(--bd-ocean-mid));
    color: #fff;
    font-size: 0.8rem;
    font-weight: 700;
    text-align: center;
    padding: 0.5rem 0.75rem;
}

.bd-course-banner__media {
    display: block;
    line-height: 0;
    background: linear-gradient(180deg, var(--bd-ocean-light), #8ecae6);
}

.bd-course-banner__img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
    aspect-ratio: 640 / 280;
}

.bd-course-banner__text {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    padding: 1.15rem 1.15rem 1.35rem;
    flex: 1;
}

.bd-course-banner__course-name {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--bd-ocean-deep);
}

.bd-course-banner__course-sub {
    font-size: 0.82rem;
    color: var(--bd-text-muted);
}

.bd-course-banner__price {
    margin-top: 0.35rem;
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--bd-ocean-mid);
}