/* ===================================================
   近畿大学バスケットボール部 OB会 公式サイト
   メインスタイルシート
   カラー: DEEP RED (#8b0000) ベース
   =================================================== */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700;900&family=Oswald:wght@400;600;700&display=swap');

/* ===================================================
   CSS 変数（カラーパレット）
   =================================================== */
:root {
    --red: #8b0000;
    --red-light: #b71c1c;
    --red-dark: #5c0000;
    --red-accent: #d32f2f;
    --charcoal: #1a1a1a;
    --charcoal2: #2c2c2c;
    --off-white: #f8f5f2;
    --white: #ffffff;
    --gray-light: #f0ebe8;
    --gray-mid: #d6ccc8;
    --gray-dark: #8a7e7e;
    --gold: #c9a227;
    --gold-light: #e8be45;
    --text-main: #1a1a1a;
    --text-sub: #5a4a4a;
    --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-strong: 0 8px 40px rgba(0, 0, 0, 0.2);
    --transition: all 0.3s ease;
    --radius: 8px;
    --radius-lg: 16px;
}

/* ===================================================
   リセット・基本設定
   =================================================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--text-main);
    background: var(--off-white);
    line-height: 1.7;
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul,
ol {
    list-style: none;
}

/* ===================================================
   ユーティリティ
   =================================================== */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-title {
    font-family: 'Oswald', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--charcoal);
    text-align: center;
    margin-bottom: 6px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.section-title-line {
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, var(--red), var(--red-light));
    margin: 10px auto 8px;
    border-radius: 2px;
}

.section-title-ja {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--gray-dark);
    text-align: center;
    margin-bottom: 52px;
    letter-spacing: 0.15em;
}

/* ===================================================
   ヘッダー
   =================================================== */
#site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(20, 0, 0, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(139, 0, 0, 0.5);
    transition: var(--transition);
}

#site-header.scrolled {
    background: rgba(10, 0, 0, 0.99);
    box-shadow: 0 2px 24px rgba(0, 0, 0, 0.4);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
}

/* ロゴ */
.header-logo {
    display: flex;
    align-items: center;
    gap: 14px;
}

.logo-emblem {
    width: 46px;
    height: 46px;
    background: linear-gradient(135deg, var(--red), var(--red-dark));
    border: 2px solid rgba(201, 162, 39, 0.5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Oswald', sans-serif;
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--gold-light);
    letter-spacing: 0.04em;
    flex-shrink: 0;
}

/* ロゴ画像 */
.header-logo-img {
    width: 46px;
    height: 46px;
    object-fit: contain;
    flex-shrink: 0;
    filter: drop-shadow(0 1px 4px rgba(0, 0, 0, 0.4));
}

/* フッターロゴ画像 */
.footer-logo-img {
    width: 56px;
    height: 56px;
    object-fit: contain;
    margin-bottom: 12px;
    filter: drop-shadow(0 1px 6px rgba(0, 0, 0, 0.5));
}

/* ヒーローコンテンツ：テキスト+マスコット横並び */
.hero-content {
    display: flex !important;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 48px;
    width: 100%;
}

.hero-mascot {
    flex-shrink: 0;
    display: flex;
    align-items: flex-end;
    pointer-events: none;
}

.mascot-img {
    width: clamp(130px, 16vw, 220px);
    opacity: 0.95;
    filter: drop-shadow(2px 4px 12px rgba(0, 0, 0, 0.45));
    transform: scaleX(-1);
    /* 右向きに */
    margin-bottom: 20px;
}

.logo-text .en {
    font-family: 'Oswald', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--gold-light);
    letter-spacing: 0.12em;
    line-height: 1.2;
}

.logo-text .ja {
    font-size: 0.62rem;
    color: rgba(255, 255, 255, 0.55);
    letter-spacing: 0.1em;
    line-height: 1.3;
}

/* ナビゲーション */
.header-nav ul {
    display: flex;
    align-items: center;
    gap: 2px;
}

.header-nav ul li a {
    display: block;
    padding: 8px 16px;
    color: rgba(255, 255, 255, 0.82);
    font-size: 0.83rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    border-radius: 4px;
    transition: var(--transition);
}

.header-nav ul li a:hover {
    color: var(--gold-light);
    background: rgba(201, 162, 39, 0.1);
}

.header-nav ul li.nav-cta a {
    background: linear-gradient(135deg, var(--red), var(--red-dark));
    border: 1px solid rgba(201, 162, 39, 0.4);
    color: var(--gold-light);
    font-weight: 700;
    padding: 8px 20px;
    margin-left: 8px;
}

.header-nav ul li.nav-cta a:hover {
    background: linear-gradient(135deg, var(--red-light), var(--red));
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(139, 0, 0, 0.5);
    color: var(--white);
}

/* ハンバーガー */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    background: none;
    border: none;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===================================================
   ヒーロー（スライダー）
   =================================================== */
#hero {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
}

.hero-slider {
    position: relative;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1.2s ease-in-out;
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg,
            rgba(80, 0, 0, 0.82) 0%,
            rgba(30, 0, 0, 0.55) 55%,
            rgba(10, 0, 0, 0.4) 100%);
}

.hero-content {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    padding: 0 10%;
    padding-top: 72px;
}

.hero-text {
    max-width: 620px;
}

.hero-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    color: var(--charcoal);
    font-family: 'Oswald', sans-serif;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.22em;
    padding: 5px 16px;
    border-radius: 2px;
    margin-bottom: 18px;
    text-transform: uppercase;
}

.hero-text h1 {
    font-family: 'Oswald', sans-serif;
    font-size: clamp(2.4rem, 5.5vw, 4rem);
    font-weight: 700;
    color: var(--white);
    line-height: 1.12;
    letter-spacing: 0.04em;
    margin-bottom: 14px;
    text-shadow: 0 2px 24px rgba(0, 0, 0, 0.6);
}

.hero-text h1 span {
    color: var(--gold-light);
}

.hero-subtitle {
    font-size: clamp(0.88rem, 1.4vw, 1rem);
    color: rgba(255, 255, 255, 0.78);
    margin-bottom: 40px;
    line-height: 1.85;
}

.hero-btns {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--red), var(--red-dark));
    border: 1px solid rgba(201, 162, 39, 0.5);
    color: var(--gold-light);
    font-weight: 700;
    font-size: 0.9rem;
    padding: 14px 30px;
    border-radius: 4px;
    letter-spacing: 0.06em;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(139, 0, 0, 0.5);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--red-light), var(--red));
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(139, 0, 0, 0.6);
    color: var(--white);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 2px solid rgba(255, 255, 255, 0.55);
    color: var(--white);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 13px 28px;
    border-radius: 4px;
    letter-spacing: 0.05em;
    transition: var(--transition);
}

.btn-secondary:hover {
    border-color: var(--gold-light);
    color: var(--gold-light);
    transform: translateY(-2px);
}

/* スライダーインジケーター */
.hero-indicators {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.hero-indicators span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.35);
    cursor: pointer;
    transition: var(--transition);
}

.hero-indicators span.active {
    background: var(--gold);
    transform: scale(1.3);
}

/* スクロールヒント */
.scroll-hint {
    position: absolute;
    bottom: 30px;
    right: 48px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.68rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    animation: bounce 2s infinite;
    z-index: 10;
}

.scroll-hint::after {
    content: '';
    display: block;
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.5), transparent);
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(6px);
    }
}

/* ===================================================
   コンテンツメニュー
   =================================================== */
#contents-menu {
    padding: 96px 0;
    background: var(--white);
}

.menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.menu-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
    aspect-ratio: 4/3;
    background: var(--charcoal);
}

.menu-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-strong);
}

.menu-card-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.45;
    transition: var(--transition);
}

.menu-card:hover .menu-card-bg {
    opacity: 0.3;
    transform: scale(1.06);
}

.menu-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top,
            rgba(80, 0, 0, 0.95) 0%,
            rgba(40, 0, 0, 0.55) 55%,
            transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
}

.menu-card-en {
    font-family: 'Oswald', sans-serif;
    font-size: 0.72rem;
    color: var(--gold-light);
    letter-spacing: 0.22em;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.menu-card-ja {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 6px;
}

.menu-card-desc {
    font-size: 0.76rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.5;
}

.menu-card-arrow {
    position: absolute;
    top: 18px;
    right: 18px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(201, 162, 39, 0.2);
    border: 1px solid rgba(201, 162, 39, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gold-light);
    font-size: 0.9rem;
    transition: var(--transition);
}

.menu-card:hover .menu-card-arrow {
    background: var(--gold);
    color: var(--charcoal);
    border-color: var(--gold);
}

/* ===================================================
   What's New
   =================================================== */
#news {
    padding: 96px 0;
    background: var(--gray-light);
}

.news-list {
    max-width: 820px;
    margin: 0 auto;
}

.news-item {
    display: flex;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid var(--gray-mid);
    align-items: flex-start;
    transition: var(--transition);
}

.news-item:first-child {
    border-top: 1px solid var(--gray-mid);
}

.news-item:hover {
    padding-left: 8px;
}

/* news-itemをリンクにした場合のスタイルリセット */
a.news-link {
    display: flex;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid var(--gray-mid);
    align-items: flex-start;
    transition: var(--transition);
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

a.news-link:hover {
    padding-left: 8px;
    background: rgba(180, 137, 60, 0.04);
}

a.news-link:first-child {
    border-top: 1px solid var(--gray-mid);
}

.news-meta {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex-shrink: 0;
    min-width: 175px;
}

.news-date {
    font-family: 'Oswald', sans-serif;
    font-size: 0.84rem;
    color: var(--gray-dark);
    letter-spacing: 0.05em;
}

.news-tag {
    display: inline-block;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    padding: 2px 10px;
    border-radius: 2px;
    text-transform: uppercase;
    width: fit-content;
}

.tag-news {
    background: rgba(139, 0, 0, 0.1);
    color: var(--red);
    border: 1px solid rgba(139, 0, 0, 0.3);
}

.tag-info {
    background: rgba(201, 162, 39, 0.12);
    color: var(--gold-dark, #a07d10);
    border: 1px solid rgba(201, 162, 39, 0.35);
}

.news-title {
    font-size: 0.93rem;
    font-weight: 500;
    color: var(--text-main);
    line-height: 1.65;
}

/* ===================================================
   ページヒーロー（各サブページ共通）
   =================================================== */
.page-hero {
    height: 300px;
    background: linear-gradient(135deg, var(--red-dark) 0%, var(--red) 60%, var(--red-light) 100%);
    display: flex;
    align-items: flex-end;
    padding-bottom: 48px;
    position: relative;
    overflow: hidden;
    margin-top: 72px;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: -60%;
    right: -8%;
    width: 480px;
    height: 480px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.04);
}

.page-hero::after {
    content: '';
    position: absolute;
    bottom: -40%;
    left: -5%;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: rgba(201, 162, 39, 0.07);
}

.page-hero-inner {
    position: relative;
    z-index: 1;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

.page-hero-badge {
    font-family: 'Oswald', sans-serif;
    font-size: 0.72rem;
    color: var(--gold-light);
    letter-spacing: 0.22em;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.page-hero h1 {
    font-family: 'Oswald', sans-serif;
    font-size: clamp(1.9rem, 4vw, 2.8rem);
    font-weight: 700;
    color: var(--white);
    letter-spacing: 0.05em;
}

.page-hero-ja {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 6px;
    letter-spacing: 0.12em;
}

/* パンくず */
.breadcrumb {
    background: var(--white);
    border-bottom: 1px solid var(--gray-mid);
    padding: 10px 0;
}

.breadcrumb-inner {
    display: flex;
    gap: 8px;
    align-items: center;
    font-size: 0.78rem;
    color: var(--gray-dark);
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

.breadcrumb-inner a {
    color: var(--red);
}

.breadcrumb-inner a:hover {
    color: var(--red-light);
}

.breadcrumb-sep {
    color: var(--gray-mid);
}

/* ===================================================
   活動紹介
   =================================================== */
#activity-list {
    padding: 80px 0;
    background: var(--gray-light);
}

.activity-article {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 40px;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
}

.activity-article:hover {
    box-shadow: var(--shadow-strong);
}

.activity-article-header {
    background: linear-gradient(135deg, var(--red-dark) 0%, var(--red) 100%);
    padding: 18px 28px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.activity-date {
    font-family: 'Oswald', sans-serif;
    font-size: 0.82rem;
    color: var(--gold-light);
    letter-spacing: 0.08em;
    white-space: nowrap;
}

.activity-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--white);
    line-height: 1.45;
}

.activity-body {
    padding: 28px;
}

.activity-main-img {
    width: 100%;
    max-height: 420px;
    object-fit: cover;
    border-radius: var(--radius);
    margin-bottom: 20px;
}

.activity-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 10px;
    margin-top: 20px;
}

.gallery-thumb {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
}

.gallery-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.gallery-thumb:hover img {
    transform: scale(1.08);
    opacity: 0.8;
}

.activity-caption {
    font-size: 0.82rem;
    color: var(--text-sub);
    text-align: center;
    margin-top: 8px;
    font-style: italic;
}

.btn-gallery-all {
    display: inline-block;
    background: linear-gradient(135deg, var(--red), var(--red-dark));
    color: var(--white);
    font-size: 0.9rem;
    font-weight: 700;
    padding: 12px 32px;
    border-radius: 4px;
    letter-spacing: 0.06em;
    transition: var(--transition);
    box-shadow: 0 4px 16px rgba(139, 0, 0, 0.3);
}

.btn-gallery-all:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(139, 0, 0, 0.4);
}

.activity-notice {
    background: rgba(201, 162, 39, 0.1);
    border: 1px solid rgba(201, 162, 39, 0.3);
    border-radius: var(--radius);
    padding: 12px 18px;
    font-size: 0.85rem;
    color: var(--text-sub);
    margin-top: 8px;
}

/* ===================================================
   会長挨拶
   =================================================== */
.chairman-section {
    padding: 80px 0;
    background: var(--white);
}

.chairman-card {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 48px;
    align-items: start;
    max-width: 880px;
    margin: 0 auto;
}

.chairman-photo-wrap {
    text-align: center;
}

.chairman-photo {
    width: 220px;
    height: 270px;
    object-fit: cover;
    object-position: top;
    border-radius: var(--radius);
    border: 4px solid var(--gray-light);
    box-shadow: var(--shadow-soft);
    margin: 0 auto 16px;
}

.chairman-name {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--charcoal);
    margin-bottom: 6px;
}

.chairman-role {
    display: inline-block;
    background: linear-gradient(135deg, var(--red), var(--red-dark));
    color: var(--gold-light);
    padding: 3px 14px;
    border-radius: 2px;
    font-weight: 700;
    font-size: 0.72rem;
    letter-spacing: 0.1em;
}

.chairman-message h3 {
    font-family: 'Oswald', sans-serif;
    font-size: 1.45rem;
    color: var(--charcoal);
    margin-bottom: 4px;
    letter-spacing: 0.03em;
}

.chairman-sub {
    font-size: 0.78rem;
    color: var(--gray-dark);
    margin-bottom: 22px;
    letter-spacing: 0.08em;
    padding-bottom: 18px;
    border-bottom: 2px solid var(--red);
}

.chairman-message p {
    font-size: 0.93rem;
    color: var(--text-sub);
    line-height: 2;
}

/* ===================================================
   役員グリッド
   =================================================== */
.executives-section {
    padding: 80px 0;
    background: var(--gray-light);
}

.executives-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.executive-card {
    flex: 0 0 195px;
    background: var(--white);
    border-radius: var(--radius);
    padding: 28px 20px;
    text-align: center;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
    border-top: 3px solid var(--red);
}

.executive-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-strong);
}

.executive-photo {
    width: 130px;
    height: 156px;
    object-fit: cover;
    object-position: top;
    border-radius: var(--radius);
    margin: 0 auto 14px;
    border: 3px solid var(--gray-light);
}

.executive-role {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--red);
    background: rgba(139, 0, 0, 0.08);
    border: 1px solid rgba(139, 0, 0, 0.25);
    padding: 2px 10px;
    border-radius: 2px;
    display: inline-block;
    margin-bottom: 8px;
}

.executive-name {
    font-weight: 700;
    font-size: 0.98rem;
    color: var(--charcoal);
}

/* ===================================================
   会則
   =================================================== */
.regulations-section {
    padding: 80px 0;
    background: var(--white);
}

.regulations-box {
    max-width: 800px;
    margin: 0 auto;
    background: var(--gray-light);
    border-radius: var(--radius-lg);
    padding: 48px;
    border-left: 4px solid var(--red);
}

.regulations-box h3 {
    font-family: 'Oswald', sans-serif;
    font-size: 1.25rem;
    color: var(--charcoal);
    margin-bottom: 24px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--gray-mid);
    letter-spacing: 0.04em;
}

.regulations-content {
    font-size: 0.88rem;
    color: var(--text-sub);
    line-height: 2.1;
}

.regulations-content .chapter {
    font-weight: 700;
    color: var(--charcoal);
    margin-top: 24px;
    margin-bottom: 6px;
    font-size: 0.93rem;
    color: var(--red);
}

/* ===================================================
   OB会員
   =================================================== */
.members-section {
    padding: 80px 0;
    background: var(--gray-light);
}

.members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(175px, 1fr));
    gap: 20px;
}

.member-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
}

.member-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-strong);
}

.member-photo-wrap {
    position: relative;
    overflow: hidden;
    aspect-ratio: 1;
    background: var(--gray-light);
}

.member-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    transition: var(--transition);
}

.member-card:hover .member-photo {
    transform: scale(1.04);
}

.member-info {
    padding: 14px;
}

.member-grad {
    font-size: 0.68rem;
    color: var(--red);
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: 3px;
}

.member-name {
    font-weight: 700;
    font-size: 0.93rem;
    color: var(--charcoal);
    margin-bottom: 2px;
}

.member-name-en {
    font-size: 0.7rem;
    color: var(--gray-dark);
    margin-bottom: 8px;
}

.member-details {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
    align-items: center;
}

.member-position {
    font-size: 0.68rem;
    background: rgba(139, 0, 0, 0.08);
    color: var(--red);
    border: 1px solid rgba(139, 0, 0, 0.2);
    padding: 2px 7px;
    border-radius: 2px;
    font-weight: 500;
}

.member-height {
    font-size: 0.68rem;
    color: var(--gray-dark);
}

/* ===================================================
   CTAバナー（会員登録）
   =================================================== */
.cta-banner {
    background: linear-gradient(135deg, var(--red-dark) 0%, var(--red) 100%);
    padding: 64px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -10%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.04);
}

.cta-banner::after {
    content: '';
    position: absolute;
    bottom: -60%;
    right: -5%;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: rgba(201, 162, 39, 0.08);
}

.cta-banner h2 {
    font-family: 'Oswald', sans-serif;
    font-size: 2rem;
    color: var(--white);
    margin-bottom: 12px;
    letter-spacing: 0.06em;
    position: relative;
    z-index: 1;
}

.cta-banner p {
    color: rgba(255, 255, 255, 0.72);
    margin-bottom: 32px;
    font-size: 0.93rem;
    position: relative;
    z-index: 1;
}

.cta-banner .btn-gold {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    color: var(--charcoal);
    font-weight: 700;
    font-size: 1rem;
    padding: 16px 40px;
    border-radius: 4px;
    letter-spacing: 0.06em;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(201, 162, 39, 0.4);
    position: relative;
    z-index: 1;
}

.cta-banner .btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(201, 162, 39, 0.5);
}

/* ===================================================
   ライトボックス
   =================================================== */
.lightbox-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.93);
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

.lightbox-overlay.active {
    display: flex;
}

.lightbox-img {
    max-width: 90vw;
    max-height: 88vh;
    object-fit: contain;
    border-radius: var(--radius);
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 24px;
    font-size: 2.5rem;
    color: rgba(255, 255, 255, 0.7);
    cursor: pointer;
    line-height: 1;
    transition: var(--transition);
    background: none;
    border: none;
}

.lightbox-close:hover {
    color: var(--white);
}

/* ===================================================
   フッター
   =================================================== */
#site-footer {
    background: var(--charcoal);
    color: rgba(255, 255, 255, 0.65);
    padding: 56px 0 24px;
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 48px;
    margin-bottom: 40px;
    align-items: start;
}

.footer-logo-emblem {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--red), var(--red-dark));
    border: 2px solid rgba(201, 162, 39, 0.4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Oswald', sans-serif;
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--gold-light);
    margin-bottom: 14px;
}

.footer-brand .brand-en {
    font-family: 'Oswald', sans-serif;
    font-size: 0.9rem;
    color: var(--gold-light);
    letter-spacing: 0.14em;
    margin-bottom: 3px;
}

.footer-brand .brand-ja {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.45);
    margin-bottom: 14px;
}

.footer-brand p {
    font-size: 0.8rem;
    line-height: 1.7;
}

.footer-nav-area {
    display: flex;
    gap: 48px;
    justify-content: flex-end;
}

.footer-nav-group h4 {
    font-family: 'Oswald', sans-serif;
    font-size: 0.76rem;
    letter-spacing: 0.16em;
    color: var(--gold-light);
    text-transform: uppercase;
    margin-bottom: 14px;
}

.footer-nav-group ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-nav-group ul li a {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.55);
    transition: var(--transition);
}

.footer-nav-group ul li a:hover {
    color: var(--gold-light);
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.copyright {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.35);
}

.page-top-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(139, 0, 0, 0.3);
    border: 1px solid rgba(139, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.page-top-btn:hover {
    background: var(--red);
    color: var(--white);
    transform: translateY(-2px);
}

/* ===================================================
   フェードインアニメーション
   =================================================== */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================================
   モバイルメニュー
   =================================================== */
.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(15, 0, 0, 0.98);
    backdrop-filter: blur(10px);
    padding: 8px 0;
    z-index: 999;
    border-bottom: 1px solid rgba(139, 0, 0, 0.4);
}

.mobile-menu.open {
    display: block;
}

.mobile-menu ul li a {
    display: block;
    padding: 14px 32px;
    color: rgba(255, 255, 255, 0.82);
    font-size: 0.95rem;
    letter-spacing: 0.05em;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mobile-menu ul li a:hover {
    color: var(--gold-light);
    background: rgba(139, 0, 0, 0.2);
}

.mobile-menu ul li.nav-cta a {
    background: linear-gradient(135deg, var(--red), var(--red-dark));
    color: var(--gold-light);
    font-weight: 700;
    margin: 12px 24px;
    border-radius: 4px;
    text-align: center;
    border-bottom: none;
    border: 1px solid rgba(201, 162, 39, 0.3);
}

/* ===================================================
   レスポンシブ
   =================================================== */
@media (max-width: 900px) {
    .header-nav {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .footer-top {
        grid-template-columns: 1fr;
    }

    .footer-nav-area {
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: 32px;
    }

    .chairman-card {
        grid-template-columns: 1fr;
    }

    .chairman-photo-wrap {
        text-align: center;
    }
}

@media (max-width: 640px) {
    .hero-content {
        padding: 0 6%;
        padding-top: 72px;
        justify-content: center;
        text-align: center;
    }

    .hero-btns {
        justify-content: center;
    }

    .hero-badge {
        display: none;
    }

    .scroll-hint {
        display: none;
    }

    /* スマホではマスコット非表示 */
    .hero-mascot {
        display: none;
    }

    .header-logo-img {
        width: 36px;
        height: 36px;
    }

    .menu-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }

    .menu-card {
        aspect-ratio: 1 / 1;
    }

    .menu-card-overlay {
        padding: 16px;
    }

    .menu-card-arrow {
        top: 12px;
        right: 12px;
        width: 24px;
        height: 24px;
        font-size: 0.75rem;
    }

    .menu-card-ja {
        font-size: 1.05rem;
        margin-bottom: 4px;
    }

    .menu-card-en {
        margin-bottom: 2px;
    }

    .menu-card-desc {
        font-size: 0.68rem;
        line-height: 1.4;
    }

    .news-item {
        flex-direction: column;
        gap: 8px;
    }

    .news-meta {
        flex-direction: row;
        align-items: center;
        min-width: unset;
    }

    .regulations-box {
        padding: 24px 18px;
    }

    /* OB会員一覧のスマホ・3列表示化 */
    .members-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
        /* 隙間を縮小 */
    }

    .member-info {
        padding: 6px;
    }

    .member-grad {
        font-size: 0.55rem;
        margin-bottom: 2px;
    }

    .member-name {
        font-size: 0.75rem;
        line-height: 1.2;
    }

    .member-name-en {
        font-size: 0.55rem;
        margin-bottom: 4px;
    }

    .member-details {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }

    .member-position,
    .member-height {
        font-size: 0.55rem;
        padding: 2px 4px;
    }
}