/* ===================================
           CSS Variables - カラースキーム
           =================================== */
        :root {
            /* ベースカラーの設定 */
            --colors-white: #ffffff;
            --colors-blk: #222222;
            --colors-smbl: #40909C;
            --colors-bsbl: #0092DA;
            --colors-mdbl: #005A99;
            --colors-ambr: #FABE00;
            --colors-mstd: #C07C00;
            --colors-pmkn: #EB6E00;
            --colors-crrd: #BF1826;
            --colors-rspk: #C95989;
            --colors-plum: #894E7B;
            --colors-indg: #474E8F;
            --colors-olgn: #99A100;
            --colors-btgn: #005F3A;
            --colors-nvbl: #00003B;
            --colors-wgry: #B3ADA6;
            --colors-ared: #E60012;
            --colors-agry: #535D64;
            
            /* サイトカラー設定 */
            --primary-color: #005F3A;
            --secondary-color: #535D64;
            --accent-color: #EB6E00;
            --dark-green: #00003B;
            --light-bg: #f8f6f3;
            --white: #ffffff;
            --text-dark: #222222;
            --text-light: #535D64;
            --border-color: #B3ADA6;
            
            /* Typography */
            --font-primary: 'Noto Sans JP', sans-serif;
            --font-display: 'Cormorant Garamond', serif;
            
            /* Spacing */
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --spacing-xl: 6rem;
            
            /* Border Radius */
            --radius-sm: 4px;
            --radius-md: 12px;
            --radius-lg: 24px;
            
            /* Shadows */
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.16);
            
            /* Transitions */
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
        }

        /* ===================================
           Reset & Base Styles
           =================================== */
        /* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }*/

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

        body {
            font-family: var(--font-primary);
            color: var(--text-dark);
            line-height: 1.7;
            background-color: var(--light-bg);
            overflow-x: hidden;
        }

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

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

        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }

        /* ===================================
           Container
           =================================== */
        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        
        /* ===================================
           Hero Section
           =================================== */
           
        .hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px;
}
 
/* 背景画像とグラデーション */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('../img/hero-1920.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed; /* パラックス効果（オプション） */
    z-index: 1;
}

/* グラデーション＆オーバーレイ */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(0, 80, 58, 0.5) 0%,
        rgba(235, 110, 0, 0.3) 100%
    );
    z-index: 2;
    mix-blend-mode: multiply; /* グラデーションと画像をブレンド */
}

        @keyframes heroGlow {
            0% { opacity: 0.6; }
            100% { opacity: 1; }
        }

        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><path d="M0,300 Q300,200 600,300 T1200,300 L1200,600 L0,600 Z" fill="rgba(0,0,59,0.3)"/></svg>') no-repeat bottom center;
            background-size: cover;
            opacity: 0.6;
        }

       .hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: var(--white);
    max-width: 900px;
    padding: var(--spacing-md);
    animation: fadeInUp 1s ease-out;
}

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(40px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero-title {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-md);
        }

        .hero-title-main {
            font-size: clamp(3rem, 8vw, 6rem);
            font-weight: 900;
            letter-spacing: 0.05em;
            line-height: 1.2;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .hero-title-sub {
            font-family: var(--font-display);
            font-size: clamp(1.5rem, 3vw, 2.5rem);
            font-weight: 600;
            letter-spacing: 0.15em;
            opacity: 0.9;
        }

        .hero-date {
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent-color);
            margin-bottom: var(--spacing-sm);
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }

        .hero-description {
            font-size: 1.4rem;
            line-height: 1.8;
            opacity: 0.95;
            margin-bottom: var(--spacing-lg);
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }

        .hero-cta {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-sm);
            background: var(--accent-color);
            color: var(--white);
            padding: 1.25rem 3rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.15rem;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: 0 8px 30px rgba(235, 110, 0, 0.4);
            position: relative;
            border: 2px solid transparent;
        }

        .hero-cta:hover {
            background: #d66300;
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 12px 40px rgba(235, 110, 0, 0.5);
            border-color: rgba(255, 255, 255, 0.3);
        }

.hero-cta2 {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-sm);
            background: var(--accent-color);
            color: var(--white);
            padding: 1.25rem 3rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.15rem;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: 0 8px 30px rgba(235, 110, 0, 0.4);
            position: relative;
            border: 2px solid transparent;
        }

        .hero-cta:hover2 {
            background: #d66300;
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 12px 40px rgba(235, 110, 0, 0.5);
            border-color: rgba(255, 255, 255, 0.3);
        }


        .hero-cta svg {
            transition: var(--transition-base);
            position: relative;
            z-index: 2;
        }

        .hero-cta span {
            position: relative;
            z-index: 2;
        }

        .hero-cta:hover svg {
            transform: translateX(5px);
        }

        .scroll-indicator {
            position: absolute;
            bottom: var(--spacing-lg);
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: var(--spacing-sm);
            color: var(--white);
            font-size: 0.85rem;
            letter-spacing: 0.15em;
            opacity: 0.8;
            animation: fadeIn 1s ease-out 1s both;
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 0.8; }
        }

        .scroll-line {
            width: 1px;
            height: 40px;
            background: var(--white);
            position: relative;
            overflow: hidden;
        }

        .scroll-line::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 20px;
            background: var(--accent-color);
            animation: scrollDown 2s ease-in-out infinite;
        }

        @keyframes scrollDown {
            0% { transform: translateY(-20px); }
            100% { transform: translateY(40px); }
        }

        /* ===================================
           Instagram Section
           =================================== */
        .instagram-section {
            padding: var(--spacing-xl) 0;
            background: var(--white);
        }

        .instagram-banner {
            display: grid;
            grid-template-columns: auto 1fr;
            gap: var(--spacing-lg);
            align-items: center;
            background: linear-gradient(135deg, #f9f7f5 0%, #ffffff 100%);
            border: 2px solid var(--primary-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-md);
        }

        .instagram-icon {
            color: var(--primary-color);
            animation: pulse 2s ease-in-out infinite;
        }

        @keyframes pulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.05); }
        }

        .instagram-text h2 {
            font-size: clamp(1.5rem, 3vw, 2.5rem);
            font-weight: 900;
            color: var(--primary-color);
            margin-bottom: var(--spacing-sm);
            line-height: 1.3;
        }

        .instagram-text p {
            font-size: 1.3em;
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: var(--spacing-md);
        }

        .instagram-link {
            display: inline-flex;
            align-items: center;
            gap: 0.75rem;
            color: var(--white);
            background: linear-gradient(135deg, #833AB4 0%, #E1306C 50%, #FCAF45 100%);
            font-weight: 700;
            font-size: 1.1rem;
            padding: 1rem 2rem;
            border-radius: 50px;
            position: relative;
            transition: var(--transition-base);
            box-shadow: 0 4px 20px rgba(131, 58, 180, 0.4);
        }

        .instagram-link::before {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: 50px;
            padding: 2px;
            background: linear-gradient(135deg, #833AB4 0%, #E1306C 50%, #FCAF45 100%);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            opacity: 0;
            transition: var(--transition-base);
        }

        .instagram-link::after {
            content: '→';
            margin-left: 0.5rem;
            transition: var(--transition-base);
        }

        .instagram-link:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(131, 58, 180, 0.5);
        }

        .instagram-link:hover::after {
            transform: translateX(5px);
        }

        /* ===================================
           Point Section
           =================================== */
        .point-section {
            padding: var(--spacing-xl) 0;
            background: var(--light-bg);
        }

        .point-card {
            text-align: center;
            background: linear-gradient(135deg, var(--accent-color) 0%, #d66300 100%);
            color: var(--white);
            padding: var(--spacing-lg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }

        .point-card::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
            animation: rotate 20s linear infinite;
            pointer-events: none;
        }

        @keyframes rotate {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        .point-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            letter-spacing: 0.1em;
            margin-bottom: var(--spacing-xs);
            position: relative;
            z-index: 1;
        }

        .point-title {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 900;
            margin-bottom: var(--spacing-md);
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
            position: relative;
            z-index: 1;
        }

        .point-card > p {
            font-size: 1.3rem;
            margin-bottom: var(--spacing-md);
            opacity: 0.95;
            position: relative;
            z-index: 1;
        }

        .point-button {
            display: inline-block;
            background: var(--white);
            color: var(--accent-color);
            padding: 1.25rem 3rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
            position: relative;
            border: 2px solid var(--white);
            z-index: 1;
        }

        .point-button:hover {
            color: var(--white);
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(212, 132, 46, 0.4);
            border-color: var(--white);
        }

        /* ===================================
           Archives Section
           =================================== */
        .archives-section {
            padding: var(--spacing-xl) 0;
            background: var(--white);
        }

        /* ===================================
           Announcement Section
           =================================== */
        .announcement-section {
            padding: var(--spacing-lg) 0;
            margin-bottom: var(--spacing-lg);
        }

        .announcement-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }

        .announcement-grid.single-item {
            grid-template-columns: 1fr;
        }

        .announcement-card {
            background: linear-gradient(135deg, var(--light-bg) 0%, var(--white) 100%);
            border: 2px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .announcement-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
            background: var(--accent-color);
            transition: var(--transition-base);
        }

        .announcement-card.type-next::before {
            background: var(--primary-color);
        }

        .announcement-card.type-event::before {
            background: var(--accent-color);
        }

        .announcement-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .announcement-card.type-next:hover {
            border-color: var(--primary-color);
        }

        .announcement-card.type-event:hover {
            border-color: var(--accent-color);
        }

        .announcement-card:hover::before {
            width: 100%;
            opacity: 0.05;
        }

        .announcement-badge {
            display: inline-block;
            background: var(--accent-color);
            color: var(--white);
            padding: 0.5rem 1.25rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 700;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.05em;
        }

        .announcement-card.type-next .announcement-badge {
            background: var(--primary-color);
        }

        .announcement-card.type-event .announcement-badge {
            background: var(--accent-color);
        }

        .announcement-title {
            font-size: 1.75rem;
            font-weight: 900;
            color: var(--text-dark);
            margin-bottom: var(--spacing-md);
            line-height: 1.3;
        }

        .announcement-description {
            font-size: 1rem;
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: var(--spacing-lg);
        }

        .announcement-link {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--primary-color);
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition-base);
            margin-top: auto;
        }

        .announcement-card.type-next .announcement-link {
            color: var(--primary-color);
        }

        .announcement-card.type-event .announcement-link {
            color: var(--accent-color);
        }

        .announcement-link::after {
            content: '→';
            transition: var(--transition-base);
        }

        .announcement-link:hover {
            gap: 0.75rem;
        }

        .announcement-link:hover::after {
            transform: translateX(5px);
        }

        .section-title {
            text-align: center;
            margin-bottom: var(--spacing-xl);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }

        .section-title-main {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 900;
            color: var(--primary-color);
            letter-spacing: 0.05em;
        }

        .section-title-sub {
            font-family: var(--font-display);
            font-size: clamp(1.2rem, 2vw, 1.8rem);
            font-weight: 600;
            color: var(--text-light);
            letter-spacing: 0.2em;
        }

        .archives-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .archive-card {
            background: var(--white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-base);
            border: 1px solid var(--border-color);
            opacity: 0;
            transform: translateY(30px);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .archive-card.is-visible {
            opacity: 1;
            transform: translateY(0);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .archive-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .archive-year {
            background: var(--primary-color);
            color: var(--white);
            padding: 0.75rem 1.5rem;
            font-weight: 900;
            font-size: 1.5rem;
            letter-spacing: 0.05em;
        }

        .archive-card[data-year="2025"] .archive-year {
            background: var(--secondary-color);
        }

        .archive-card[data-year="2026"] .archive-year {
            background: var(--primary-color);
        }

        .archive-thumbnail {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--light-bg);
        }

        .archive-thumbnail a {
            display: block;
            width: 100%;
            height: 100%;
            position: relative;
        }

        .archive-thumbnail img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition-slow);
        }

        .archive-card:hover .archive-thumbnail img {
            transform: scale(1.05);
        }

        .play-icon {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            opacity: 0.9;
            transition: var(--transition-base);
        }

        .archive-card:hover .play-icon {
            opacity: 1;
            transform: translate(-50%, -50%) scale(1.1);
        }

        .archive-content {
            padding: var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .archive-date {
            display: inline-block;
            background: var(--light-bg);
            color: var(--primary-color);
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
        }

        .archive-title {
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--text-dark);
            margin-bottom: var(--spacing-sm);
            line-height: 1.4;
            min-height: 4.2rem;
        }

        .archive-description {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: var(--spacing-md);
            flex: 1;
        }

        .view-post {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            color: var(--white);
            background: var(--primary-color);
            font-weight: 700;
            font-size: 1rem;
            padding: 0.875rem 1.75rem;
            border-radius: 50px;
            transition: var(--transition-base);
            margin-top: auto;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .view-post::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 0;
            height: 0;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.2);
            transform: translate(-50%, -50%);
            transition: width 0.4s ease, height 0.4s ease;
            pointer-events: none;
            z-index: 0;
        }

        .view-post:hover::before {
            width: 250px;
            height: 250px;
        }

        .view-post::after {
            content: '→';
            transition: var(--transition-base);
            position: relative;
            z-index: 2;
        }

        .view-post span {
            position: relative;
            z-index: 2;
        }

        .view-post:hover {
            background: var(--dark-green);
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(44, 95, 63, 0.4);
        }

        .view-post:hover::after {
            transform: translateX(5px);
        }

        .archive-embed {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-top: var(--spacing-md);
        }

        .instagram-media {
            max-width: 100% !important;
            min-width: auto !important;
        }

        /* ===================================
           Past Archives (展開エリア)
           =================================== */
        .past-archives {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.5s ease-out, opacity 0.5s ease-out;
            opacity: 0;
        }

        .past-archives.is-open {
            max-height: 5000px;
            opacity: 1;
            margin-top: var(--spacing-lg);
        }

        .archives-grid-past {
            /* 過去のアーカイブ用の追加スタイルがあればここに */
        }

        .archive-card-past {
            /* 過去のアーカイブカード用の追加スタイル */
        }

        /* 2024年と2023年の年バッジの色分け */
        .archive-card[data-year="2024"] .archive-year {
            background: var(--colors-mdbl);
        }

        .archive-card[data-year="2023"] .archive-year {
            background: var(--colors-agry);
        }

        /* ===================================
           Load More Button
           =================================== */
        .load-more {
            text-align: center;
            padding: var(--spacing-lg) 0;
        }

        .load-more-button {
            background: var(--primary-color);
            color: var(--white);
            padding: 1.125rem 3.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition-base);
            box-shadow: var(--shadow-md);
            position: relative;
            overflow: hidden;
        }

        .load-more-button::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: var(--transition-base);
        }

        .load-more-button:hover::before {
            left: 100%;
        }

        .load-more-button:hover {
            background: var(--dark-green);
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        .load-more-button.is-active::after {
            content: ' ▲';
        }

        .load-more-button.is-active::before {
            display: none;
        }

        /* ===================================
           Footer
           =================================== */
        .footer {
            background: var(--dark-green);
            color: var(--white);
            padding: var(--spacing-xl) 0 var(--spacing-md);
        }

        .footer-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .footer-logo-main {
            font-size: 1.8rem;
            font-weight: 900;
            letter-spacing: 0.05em;
            display: block;
            margin-bottom: var(--spacing-xs);
        }

        .footer-tagline {
            font-size: 1rem;
            opacity: 0.8;
            letter-spacing: 0.05em;
        }

        .footer-links {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
        }

        .footer-column h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.05em;
        }

        .footer-column ul {
            list-style: none;
        }

        .footer-column li {
            margin-bottom: 0.5rem;
        }

        .footer-column a {
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.95rem;
        }

        .footer-column a:hover {
            color: var(--accent-color);
        }

        .footer-column p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: var(--spacing-md);
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.85rem;
            opacity: 0.6;
            letter-spacing: 0.05em;
        }




        
        /* ===================================
           Responsive Design
           =================================== */
        @media (max-width: 1024px) {
            :root {
                --spacing-xl: 4rem;
                --spacing-lg: 3rem;
            }
            
            .archives-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-md);
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-xl: 3rem;
                --spacing-lg: 2rem;
            }
            
            .nav-menu {
                gap: var(--spacing-sm);
            }
            
            .nav-menu a {
                font-size: 0.85rem;
            }
            
            .hero {
                min-height: 90vh;
            }
            
            .hero-description br {
                display: none;
            }
            
            .instagram-banner {
                grid-template-columns: 1fr;
                text-align: center;
                padding: var(--spacing-md);
            }
            
            .instagram-icon {
                margin: 0 auto;
            }

            .announcement-grid {
                grid-template-columns: 1fr;
            }
            
            .archives-grid {
                grid-template-columns: 1fr;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            
            .footer-links {
                grid-template-columns: 1fr;
            }

            /* 背景画像とグラデーション */
           
            .hero::before {
            background-image: url('../img/hero_10801920.webp');
            background-attachment: scroll; /* スマホでは無効化 */
            }

        }

        @media (max-width: 480px) {
            .hero-cta {
                padding: 0.9rem 2rem;
                font-size: 1rem;
            }
            
            .point-card {
                padding: var(--spacing-md);
            }
            
            .point-button {
                padding: 0.9rem 2rem;
                font-size: 0.95rem;
            }
            
            .archive-content {
                padding: var(--spacing-sm);
            }

            .archive-thumbnail {
                aspect-ratio: 4 / 3;
            }
        }