@charset "UTF-8";

/* ========================================
   リセットCSS
======================================== */
* {
    margin: 0;
    padding: 0;
    line-height: 1;
    box-sizing: border-box;
}

body {
    font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
    font-weight: 400;
    color: #2c2c2c;
    line-height: 1.9;
    overflow-x: hidden;
}

ul {
    list-style: none;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    vertical-align: bottom;
}

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

/* ========================================
   共通設定
======================================== */
.container {
    max-width: 1200px;
    padding: 0 40px;
    margin: 0 auto;
}

/* モバイル専用改行 */
.sp-br {
    display: none;
}

/* ========================================
   ヘッダー
======================================== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

header .header_inner {
    display: flex;
    height: 90px;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

/* デスクトップ用ヘッダーナビゲーション */
.header-nav {
    display: flex;
    align-items: center;
}

.header-nav ul {
    display: flex;
    gap: 10px;
    margin: 0;
    padding: 0;
    flex-direction: row;
}

.header-nav li {
    list-style: none;
}

.header-nav li a {
    display: flex;
    flex-direction: column;
    padding: 12px 20px;
    color: #2c2c2c;
    font-weight: 600;
    transition: all 0.3s ease;
    border-radius: 8px;
    font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, sans-serif;
    border-bottom: none;
    text-align: left;
}

.header-nav li a span {
    font-size: 11px;
    font-weight: 400;
    color: #666;
    margin-top: 3px;
    letter-spacing: 0.05em;
}

.header-nav li a:hover {
    background-color: #f8f9fa;
    color: #e74c3c;
}

.header-nav li a:hover span {
    color: #e74c3c;
}

/* モバイル用ナビゲーション（ハンバーガーメニュー） */
.mobile-nav {
    position: fixed;
    right: 40px;
    top: 0;
    height: 90px;
    display: none;
    align-items: center;
    z-index: 999;
    background-color: transparent;
    left: auto;
    width: auto;
    padding-top: 0;
    overflow-y: visible;
}

header h1 {
    width: 200px;
}

header .logo p {
    font-size: 13px;
    color: #555;
    margin-top: 5px;
    font-weight: 400;
    letter-spacing: 0.05em;
}

.mobile-nav ul {
    display: flex;
    gap: 10px;
    margin: 0;
    padding: 0;
    flex-direction: row;
}

.mobile-nav li {
    list-style: none;
}

.mobile-nav li a {
    display: flex;
    flex-direction: column;
    padding: 12px 20px;
    color: #2c2c2c;
    font-weight: 600;
    transition: all 0.3s ease;
    border-radius: 8px;
    font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, sans-serif;
    border-bottom: none;
    text-align: left;
}

.mobile-nav li a span {
    font-size: 11px;
    font-weight: 400;
    color: #666;
    margin-top: 3px;
    letter-spacing: 0.05em;
}

.mobile-nav li a:hover {
    background-color: #f8f9fa;
    color: #e74c3c;
}

.mobile-nav li a:hover span {
    color: #e74c3c;
}

/* ========================================
   ヒーローセクション
======================================== */
.hero {
    position: relative;
    height: 85vh;
    min-height: 600px;
    margin-top: 90px;
    overflow: hidden;
}

.hero__video {
    position: relative;
    width: 100%;
    height: 100%;
}

.hero__video img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    animation: slowZoom 20s ease-in-out infinite alternate;
}

@keyframes slowZoom {
    0% { transform: scale(1); }
    100% { transform: scale(1.1); }
}

.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0,0,0,0.3), rgba(0,0,0,0.5));
}

.hero__content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    z-index: 10;
    width: 90%;
    max-width: 900px;
}

.hero__title {
    font-size: 3.5rem;
    font-weight: 600;
    margin-bottom: 30px;
    letter-spacing: 0.1em;
    line-height: 1.4;
    text-shadow: 0 4px 20px rgba(0,0,0,0.3);
    animation: fadeInUp 1s ease-out;
    font-family: "Noto Serif JP", serif;
}

.hero__subtitle {
    font-size: 1.1rem;
    font-weight: 300;
    letter-spacing: 0.08em;
    line-height: 1.9;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
    animation: fadeInUp 1s ease-out 0.3s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   コンセプトセクション
======================================== */
.concept {
    padding: 120px 0;
    background-color: #fafbfc;
}

.concept__title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 60px;
    font-weight: 600;
    letter-spacing: 0.05em;
    line-height: 1.6;
    font-family: "Noto Serif JP", serif;
    animation: fadeIn 1s ease-out;
}

.concept__text {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.concept__text p {
    font-size: 1.1rem;
    line-height: 2;
    margin-bottom: 30px;
    letter-spacing: 0.05em;
    animation: fadeIn 1s ease-out 0.2s both;
}

.concept__text p:last-child {
    margin-bottom: 0;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ========================================
   季節セレクター
======================================== */
.seasons {
    padding: 80px 0 60px;
    background-color: #fff;
}

.seasons__selector {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.season-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 35px;
    background-color: #fff;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    transition: all 0.3s ease;
    min-width: 160px;
}

.season-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    border-color: #bbb;
}

.season-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-color: transparent;
    color: #fff;
}

.season-btn__en {
    font-family: "Noto Sans JP", sans-serif;
    font-size: 1.3rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    margin-bottom: 8px;
}

.season-btn__ja {
    font-size: 0.85rem;
    font-weight: 300;
    letter-spacing: 0.05em;
}

.season-btn.active .season-btn__ja {
    opacity: 0.9;
}

/* ========================================
   ギャラリーグリッド
======================================== */
.gallery {
    padding: 60px 0 120px;
    background-color: #fff;
}

.gallery__grid {
    display: none;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    opacity: 0;
    animation: fadeIn 0.8s ease-out forwards;
}

.gallery__grid.active {
    display: grid;
}

.gallery__item {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.gallery__item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.15);
}

.gallery__item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.gallery__item:hover img {
    transform: scale(1.08);
}

.gallery__item::before {
    content: attr(data-voice);
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: #fff;
    font-size: 0.95rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    line-height: 1.6;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.gallery__item:hover::before {
    opacity: 1;
    transform: translateY(0);
}

/* ギャラリーアイテムのフェードインアニメーション */
.gallery__item {
    animation: fadeInItem 0.6s ease-out both;
}

.gallery__item:nth-child(1) { animation-delay: 0.1s; }
.gallery__item:nth-child(2) { animation-delay: 0.15s; }
.gallery__item:nth-child(3) { animation-delay: 0.2s; }
.gallery__item:nth-child(4) { animation-delay: 0.25s; }
.gallery__item:nth-child(5) { animation-delay: 0.3s; }
.gallery__item:nth-child(6) { animation-delay: 0.35s; }
.gallery__item:nth-child(7) { animation-delay: 0.4s; }
.gallery__item:nth-child(8) { animation-delay: 0.45s; }

@keyframes fadeInItem {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   スペシャルコンテンツ
======================================== */
.special {
    padding: 120px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.special__title {
    font-size: 2.2rem;
    text-align: center;
    margin-bottom: 80px;
    font-weight: 600;
    letter-spacing: 0.1em;
    font-family: "Noto Serif JP", serif;
}

.special__items {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 50px;
    max-width: 1100px;
    margin: 0 auto;
}

.special__item {
    background-color: #fff;
    padding: 50px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.special__item:hover {
    transform: translateY(-5px);
}

/* タイムライン */
.timeline__header h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
    font-weight: 600;
}

.timeline__subtitle {
    font-family: "Noto Sans JP", sans-serif;
    font-size: 0.9rem;
    color: #999;
    letter-spacing: 0.1em;
    margin-bottom: 35px;
}

.timeline__content {
    display: flex;
    align-items: center;
    gap: 25px;
    margin-bottom: 30px;
}

.timeline__photo {
    flex: 1;
    position: relative;
}

.timeline__photo img {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.timeline__label {
    position: absolute;
    bottom: 10px;
    left: 10px;
    background-color: rgba(0,0,0,0.7);
    color: #fff;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
}

.timeline__arrow {
    font-size: 2rem;
    color: #667eea;
    font-weight: bold;
}

.timeline__text {
    font-size: 0.95rem;
    line-height: 1.9;
    color: #555;
    letter-spacing: 0.05em;
}

/* カラーパレット */
.palette__header h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
    font-weight: 600;
}

.palette__subtitle {
    font-size: 0.9rem;
    color: #999;
    margin-bottom: 35px;
}

.palette__colors {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin-bottom: 30px;
}

.palette__color {
    aspect-ratio: 1;
    border-radius: 12px;
    position: relative;
    cursor: pointer;
    transition: transform 0.3s ease;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.palette__color:hover {
    transform: scale(1.1);
}

.palette__color::after {
    content: attr(data-label);
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.3s ease;
    color: #666;
}

.palette__color:hover::after {
    opacity: 1;
}

.palette__text {
    font-size: 0.95rem;
    line-height: 1.9;
    color: #555;
    letter-spacing: 0.05em;
    margin-top: 40px;
}

/* ========================================
   フッター
======================================== */
footer {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: #fff;
    padding: 80px 0 0;
}

.footer__content {
    max-width: 1200px;
}

.footer__cta {
    margin-bottom: 60px;
}

.footer__cta h3 {
    font-size: 1.8rem;
    margin-bottom: 40px;
    text-align: center;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.footer__links {
    display: flex;
    gap: 25px;
    justify-content: center;
    flex-wrap: wrap;
}

.footer__btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 25px 35px;
    border-radius: 12px;
    transition: all 0.3s ease;
    min-width: 280px;
    text-align: center;
}

.footer__btn--primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.footer__btn--secondary {
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.footer__btn:hover {
    transform: translateY(-3px);
}

.footer__btn--primary:hover {
    box-shadow: 0 12px 35px rgba(102, 126, 234, 0.5);
}

.footer__btn--secondary:hover {
    background-color: rgba(255, 255, 255, 0.15);
}

.footer__btn span {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 8px;
    letter-spacing: 0.05em;
}

.footer__btn small {
    font-size: 0.85rem;
    opacity: 0.8;
    font-weight: 300;
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 30px 0;
    text-align: center;
}

.footer__bottom small {
    font-size: 0.85rem;
    opacity: 0.7;
}

/* ========================================
   バーガーメニュー
======================================== */
.burger {
    display: none;
    position: fixed;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background-color: #fff;
    border-radius: 8px;
    z-index: 1002;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    cursor: pointer;
}

.burger span {
    position: absolute;
    width: 60%;
    height: 3px;
    background-color: #333;
    inset: 0;
    margin: auto;
    border-radius: 2px;
    transition: 0.3s;
}

.burger span:nth-of-type(1) {
    top: -30%;
}

.burger span:nth-of-type(3) {
    top: 30%;
}

.burger.active span:nth-of-type(1) {
    top: 0;
    transform: rotate(45deg);
}

.burger.active span:nth-of-type(2) {
    opacity: 0;
}

.burger.active span:nth-of-type(3) {
    top: 0;
    transform: rotate(-45deg);
}

/* ========================================
   レスポンシブ
======================================== */
/* タブレット以上 - ハンバーガーメニューを非表示 */
@media (min-width: 769px) {
    .burger {
        display: none !important;
    }
}

@media (max-width: 1024px) {
    .gallery__grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 25px;
    }

    .special__items {
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    /* モバイル専用改行を表示 */
    .sp-br {
        display: inline;
    }

    /* ヘッダー */
    header .header_inner {
        height: 70px;
    }

    header h1 {
        width: 160px;
    }

    header .logo p {
        font-size: 11px;
    }

    /* デスクトップナビゲーションを非表示 */
    .header-nav {
        display: none;
    }

    /* バーガーメニュー */
    .burger {
        display: block;
        z-index: 1002;
    }

    .mobile-nav {
        display: block;
        position: fixed;
        right: auto;
        top: 0;
        left: 100%;
        transform: none;
        width: 100%;
        height: 100%;
        background: linear-gradient(135deg, rgb(25, 35, 50) 0%, rgb(15, 25, 40) 100%);
        backdrop-filter: blur(20px);
        padding-top: 100px;
        padding-bottom: 50px;
        transition: left 0.3s ease;
        z-index: 1001;
        overflow-y: auto;
    }

    .mobile-nav.drawer {
        left: 0;
    }

    .mobile-nav ul {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        padding: 0;
        margin: 0;
    }
    
    .mobile-nav li {
        width: 100%;
    }

    .mobile-nav li a {
        display: flex;
        flex-direction: column;
        text-align: center;
        color: #fff;
        padding: 25px 20px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.15);
        font-size: 1.2rem;
        transition: all 0.3s ease;
        width: 100%;
    }
    
    .mobile-nav li a:hover {
        background-color: rgba(255, 255, 255, 0.1);
    }

    .mobile-nav li a span {
        color: rgba(255, 255, 255, 0.8);
        font-size: 0.9rem;
        display: block;
        margin-top: 8px;
    }

    /* ヒーロー */
    .hero {
        height: 70vh;
        min-height: 500px;
        margin-top: 70px;
    }

    .hero__title {
        font-size: 2rem;
        margin-bottom: 20px;
    }

    .hero__subtitle {
        font-size: 0.95rem;
    }

    /* コンセプト */
    .concept {
        padding: 80px 0;
    }

    .concept__title {
        font-size: 1.8rem;
        margin-bottom: 40px;
    }

    .concept__text p {
        font-size: 1rem;
    }

    /* 季節セレクター */
    .seasons {
        padding: 60px 0 40px;
    }

    .seasons__selector {
        gap: 15px;
    }

    .season-btn {
        padding: 15px 25px;
        min-width: 140px;
    }

    .season-btn__en {
        font-size: 1.1rem;
    }

    .season-btn__ja {
        font-size: 0.75rem;
    }

    /* ギャラリー */
    .gallery {
        padding: 40px 0 80px;
    }

    .gallery__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .gallery__item::before {
        font-size: 0.85rem;
        padding: 15px;
    }

    /* スペシャルコンテンツ */
    .special {
        padding: 80px 0;
    }

    .special__title {
        font-size: 1.8rem;
        margin-bottom: 50px;
    }

    .special__items {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .special__item {
        padding: 35px 25px;
    }

    .timeline__content {
        gap: 15px;
    }

    .timeline__arrow {
        font-size: 1.5rem;
    }

    .palette__colors {
        grid-template-columns: repeat(4, 1fr);
        gap: 12px;
    }

    /* フッター */
    footer {
        padding: 60px 0 0;
    }

    .footer__cta h3 {
        font-size: 1.5rem;
        margin-bottom: 30px;
    }

    .footer__links {
        flex-direction: column;
        gap: 20px;
    }

    .footer__btn {
        min-width: 100%;
        padding: 20px 25px;
    }
}

@media (max-width: 480px) {
    .gallery__grid {
        grid-template-columns: 1fr;
    }

    .hero__title {
        font-size: 1.6rem;
    }

    .concept__title {
        font-size: 1.5rem;
    }

    .season-btn {
        flex: 1 1 calc(50% - 10px);
        min-width: auto;
    }

    .palette__colors {
        grid-template-columns: repeat(2, 1fr);
    }

    .timeline__content {
        flex-direction: column;
    }

    .timeline__arrow {
        transform: rotate(90deg);
    }
}

/* ========================================
   季節別ページ専用スタイル
======================================== */

/* Springページのカラーアクセント */
.spring-page .spring-active {
    position: relative;
}

.spring-page .spring-active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, rgba(255, 182, 193, 0.6), rgba(255, 192, 203, 0.8));
    border-radius: 2px;
}

/* 季節別ヒーローオーバーレイ */
.hero__overlay--spring {
    background: linear-gradient(to bottom, rgba(255, 182, 193, 0.2), rgba(0, 0, 0, 0.5));
}

.season-hero .hero__season {
    font-family: "Noto Sans JP", sans-serif;
    font-size: 1.2rem;
    letter-spacing: 0.2em;
    margin-bottom: 15px;
    opacity: 0.9;
    font-weight: 300;
}

/* イントロダクション */
.intro {
    padding: 100px 0;
    background: linear-gradient(135deg, #fff5f7 0%, #ffe6e9 100%);
}

.intro__content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.intro__lead {
    font-size: 1.3rem;
    line-height: 2.2;
    margin-bottom: 40px;
    font-weight: 500;
    color: #444;
    letter-spacing: 0.05em;
}

.intro__text {
    font-size: 1.1rem;
    line-height: 2;
    color: #666;
    letter-spacing: 0.05em;
}

/* アーカイブセクション */
.archive {
    padding: 120px 0;
    background-color: #fff;
}

.archive__title {
    font-size: 2.2rem;
    text-align: center;
    margin-bottom: 80px;
    font-weight: 600;
    letter-spacing: 0.15em;
    font-family: "Noto Serif JP", serif;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.archive__title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #ffb6c1, #ffc0cb);
}

.archive__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.archive__item {
    position: relative;
    animation: fadeInItem 0.8s ease-out both;
}

.archive__item:nth-child(1) { animation-delay: 0.1s; }
.archive__item:nth-child(2) { animation-delay: 0.15s; }
.archive__item:nth-child(3) { animation-delay: 0.2s; }
.archive__item:nth-child(4) { animation-delay: 0.25s; }
.archive__item:nth-child(5) { animation-delay: 0.3s; }
.archive__item:nth-child(6) { animation-delay: 0.35s; }
.archive__item:nth-child(7) { animation-delay: 0.4s; }
.archive__item:nth-child(8) { animation-delay: 0.45s; }

.archive__photo {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    border-radius: 12px;
    margin-bottom: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.archive__photo:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.15);
}

.archive__photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.archive__photo:hover img {
    transform: scale(1.08);
}

.archive__overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 25px;
    background: linear-gradient(to top, rgba(255, 182, 193, 0.9), transparent);
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.archive__photo:hover .archive__overlay {
    opacity: 1;
    transform: translateY(0);
}

.archive__voice {
    color: #fff;
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    line-height: 1.7;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.archive__caption h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    font-weight: 600;
    color: #333;
}

.archive__desc {
    font-size: 0.95rem;
    line-height: 1.8;
    color: #666;
    letter-spacing: 0.03em;
}

/* サイドストーリー */
.side-story {
    padding: 100px 0;
    background: linear-gradient(135deg, #ffeef2 0%, #fff 100%);
}

.side-story__content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 60px;
    max-width: 1100px;
    margin: 0 auto;
}

.side-story__item {
    background-color: #fff;
    padding: 45px;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(255, 182, 193, 0.15);
    transition: transform 0.3s ease;
}

.side-story__item:hover {
    transform: translateY(-5px);
}

.side-story__item h3 {
    font-size: 1.3rem;
    margin-bottom: 25px;
    font-weight: 600;
    color: #333;
    border-left: 4px solid #ffb6c1;
    padding-left: 15px;
}

.side-story__item blockquote {
    font-size: 1rem;
    line-height: 2;
    color: #555;
    font-style: italic;
    margin-bottom: 20px;
    letter-spacing: 0.03em;
    position: relative;
    padding-left: 20px;
}

.side-story__item blockquote::before {
    content: '"';
    position: absolute;
    left: 0;
    top: -5px;
    font-size: 3rem;
    color: #ffb6c1;
    opacity: 0.3;
    font-family: "Noto Serif JP", serif;
}

.side-story__author {
    text-align: right;
    font-size: 0.9rem;
    color: #999;
    font-weight: 500;
}

/* 次の季節へ */
.next-season {
    padding: 120px 0;
    background-color: #fff;
}

.next-season__preview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
    padding: 60px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.next-season__image {
    position: relative;
    aspect-ratio: 16/10;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.next-season__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.next-season__preview:hover .next-season__image img {
    transform: scale(1.05);
}

.next-season__content {
    padding: 20px;
}

.next-season__label {
    font-family: "Noto Sans JP", sans-serif;
    font-size: 0.9rem;
    letter-spacing: 0.15em;
    color: #999;
    margin-bottom: 10px;
    font-weight: 300;
}

.next-season__title {
    font-family: "Noto Serif JP", serif;
    font-size: 3rem;
    font-weight: 600;
    margin-bottom: 15px;
    background: linear-gradient(135deg, #f39c12 0%, #e74c3c 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.next-season__subtitle {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 25px;
    letter-spacing: 0.05em;
}

.next-season__text {
    font-size: 1rem;
    line-height: 1.9;
    color: #777;
    margin-bottom: 35px;
    letter-spacing: 0.03em;
}

.next-season__btn {
    display: inline-block;
    padding: 15px 40px;
    background: linear-gradient(135deg, #f39c12 0%, #e74c3c 100%);
    color: #fff;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.05rem;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(243, 156, 18, 0.4);
}

.next-season__btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(243, 156, 18, 0.5);
}

/* フッターナビゲーション */
.footer__navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 30px;
}

.footer__link {
    color: #fff;
    font-size: 1rem;
    transition: opacity 0.3s ease;
}

.footer__link:hover {
    opacity: 0.7;
}

.footer__season-links {
    display: flex;
    gap: 20px;
}

.footer__season-link {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    font-family: "Noto Sans JP", sans-serif;
    letter-spacing: 0.1em;
    transition: all 0.3s ease;
    padding-bottom: 5px;
    border-bottom: 2px solid transparent;
}

.footer__season-link:hover {
    color: #fff;
}

.footer__season-link.active {
    color: #fff;
    border-bottom-color: #ffb6c1;
}

/* ========================================
   季節別ページのレスポンシブ
======================================== */
@media (max-width: 1024px) {
    .archive__grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 35px;
    }

    .next-season__preview {
        gap: 40px;
        padding: 50px;
    }
}

@media (max-width: 768px) {
    .intro {
        padding: 70px 0;
    }

    .intro__lead {
        font-size: 1.1rem;
    }

    .intro__text {
        font-size: 1rem;
    }

    .archive {
        padding: 80px 0;
    }

    .archive__title {
        font-size: 1.8rem;
        margin-bottom: 50px;
    }

    .archive__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .side-story {
        padding: 70px 0;
    }

    .side-story__content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .side-story__item {
        padding: 35px 25px;
    }

    .next-season {
        padding: 80px 0;
    }

    .next-season__preview {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 40px 25px;
    }

    .next-season__title {
        font-size: 2.5rem;
    }

    .footer__navigation {
        flex-direction: column;
        gap: 25px;
        align-items: flex-start;
    }

    .footer__season-links {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .archive__grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .archive__caption h4 {
        font-size: 1.1rem;
    }

    .archive__desc {
        font-size: 0.9rem;
    }

    .next-season__title {
        font-size: 2rem;
    }

    .next-season__text br {
        display: none;
    }
}

/* ========================================
   Summer（夏）ページ専用スタイル
======================================== */

/* Summerページのカラーアクセント */
.summer-page .summer-active {
    position: relative;
}

.summer-page .summer-active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #3498db, #f39c12);
    border-radius: 2px;
}

/* 夏のヒーローオーバーレイ */
.hero__overlay--summer {
    background: linear-gradient(to bottom, rgba(52, 152, 219, 0.3), rgba(243, 156, 18, 0.4), rgba(0, 0, 0, 0.5));
}

/* 夏のイントロダクション */
.intro--summer {
    background: linear-gradient(135deg, #fff9e6 0%, #ffe6cc 100%);
}

/* 夏のアーカイブタイトル */
.archive__title--summer::after {
    background: linear-gradient(90deg, #f39c12, #e74c3c);
}

/* 夏のオーバーレイ（スカイブルー→サンセットオレンジ） */
.archive__overlay--summer {
    background: linear-gradient(to top, rgba(243, 156, 18, 0.9), rgba(52, 152, 219, 0.7), transparent);
}

/* レンズフレアアニメーション */
.archive__photo::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.4) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.5s ease, transform 0.5s ease;
    pointer-events: none;
}

.archive__photo:hover::after {
    opacity: 1;
    transform: translate(10%, 10%);
}

/* 動と静のリズム（微妙な差をつける） */
.archive__item--dynamic {
    animation-timing-function: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.archive__item--calm {
    animation-timing-function: ease-out;
}

.archive__item--dynamic:hover {
    transform: translateY(-10px) scale(1.02);
}

.archive__item--calm:hover {
    transform: translateY(-5px);
}

/* 夏のサイドストーリー */
.side-story--summer {
    background: linear-gradient(135deg, #fff5e6 0%, #ffe9cc 100%);
}

.side-story__item--summer {
    box-shadow: 0 8px 30px rgba(243, 156, 18, 0.2);
    border-top: 4px solid #f39c12;
}

.side-story__item--summer h3 {
    border-left-color: #f39c12;
}

.side-story__item--summer blockquote::before {
    color: #f39c12;
}

/* 次の季節へ（夏→秋） */
.next-season--from-summer .next-season__preview {
    background: linear-gradient(135deg, #fff8f0 0%, #ffe9d9 100%);
}

.next-season__autumn-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom right, rgba(212, 85, 50, 0.1), rgba(184, 134, 11, 0.15));
    pointer-events: none;
}

.next-season__title--autumn {
    background: linear-gradient(135deg, #d45532 0%, #b8860b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.next-season__btn--autumn {
    background: linear-gradient(135deg, #d45532 0%, #b8860b 100%);
    box-shadow: 0 4px 15px rgba(212, 85, 50, 0.4);
}

.next-season__btn--autumn:hover {
    box-shadow: 0 8px 25px rgba(212, 85, 50, 0.5);
}

/* 夏のフッター強調 */
.summer-page .footer__season-link.active {
    border-bottom-color: #f39c12;
}

/* ========================================
   Autumn（秋）ページ専用スタイル
======================================== */

/* Autumnページのカラーアクセント */
.autumn-page .autumn-active {
    position: relative;
}

.autumn-page .autumn-active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #d45532, #b8860b);
    border-radius: 2px;
}

/* 秋のヒーローオーバーレイ（アンバートーン） */
.hero__overlay--autumn {
    background: linear-gradient(to bottom, rgba(212, 85, 50, 0.25), rgba(184, 134, 11, 0.3), rgba(0, 0, 0, 0.5));
}

/* 秋のイントロダクション */
.intro--autumn {
    background: linear-gradient(135deg, #fff8f0 0%, #ffe9d9 100%);
}

/* 秋は明朝体で知的・文学的な印象を強調 */
.autumn-page .intro__lead,
.autumn-page .intro__text,
.autumn-page .archive__voice,
.autumn-page .archive__desc,
.autumn-page .side-story__item blockquote {
    font-family: "Noto Serif JP", serif;
}

/* 秋のアーカイブタイトル */
.archive__title--autumn::after {
    background: linear-gradient(90deg, #d45532, #b8860b);
}

/* 秋のオーバーレイ（テラコッタ&マスタードイエロー） */
.archive__overlay--autumn {
    background: linear-gradient(to top, rgba(184, 134, 11, 0.85), rgba(212, 85, 50, 0.7), transparent);
}

/* 創造と探求のリズム */
.archive__item--creative {
    animation-timing-function: cubic-bezier(0.34, 1.56, 0.64, 1);
}

.archive__item--study {
    animation-timing-function: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.archive__item--creative:hover {
    transform: translateY(-8px) rotate(1deg);
}

.archive__item--study:hover {
    transform: translateY(-6px);
}

/* 柔らかな光と影の演出 */
.autumn-page .archive__photo::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 235, 205, 0.2) 0%, transparent 50%, rgba(139, 69, 19, 0.1) 100%);
    opacity: 0.6;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.autumn-page .archive__photo:hover::before {
    opacity: 0.8;
}

/* コントラストを抑えたトーン */
.autumn-page .archive__photo img {
    filter: brightness(0.95) contrast(0.92) saturate(1.1);
    transition: filter 0.4s ease, transform 0.4s ease;
}

.autumn-page .archive__photo:hover img {
    filter: brightness(1) contrast(1) saturate(1.15);
}

/* 秋のサイドストーリー */
.side-story--autumn {
    background: linear-gradient(135deg, #fef5e7 0%, #fdebd0 100%);
}

.side-story__item--autumn {
    box-shadow: 0 8px 30px rgba(184, 134, 11, 0.2);
    border-top: 4px solid #b8860b;
}

.side-story__item--autumn h3 {
    border-left-color: #d45532;
    font-family: "Noto Serif JP", serif;
    font-weight: 600;
}

.side-story__item--autumn blockquote {
    font-style: normal;
    line-height: 2.2;
}

.side-story__item--autumn blockquote::before {
    color: #d45532;
}

/* 次の季節へ（秋→冬） */
.next-season--from-autumn .next-season__preview {
    background: linear-gradient(135deg, #f0f8ff 0%, #e6f2ff 100%);
}

.next-season__winter-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom right, rgba(176, 224, 230, 0.15), rgba(135, 206, 250, 0.2));
    pointer-events: none;
}

.next-season__title--winter {
    background: linear-gradient(135deg, #4682b4 0%, #5f9ea0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.next-season__btn--winter {
    background: linear-gradient(135deg, #4682b4 0%, #5f9ea0 100%);
    box-shadow: 0 4px 15px rgba(70, 130, 180, 0.4);
}

.next-season__btn--winter:hover {
    box-shadow: 0 8px 25px rgba(70, 130, 180, 0.5);
}

/* 秋のフッター強調 */
.autumn-page .footer__season-link.active {
    border-bottom-color: #d45532;
}

/* 秋特有の文学的な雰囲気 */
.autumn-page h2,
.autumn-page h3,
.autumn-page h4 {
    font-family: "Noto Serif JP", serif;
}

.autumn-page .hero__title {
    font-weight: 500;
    letter-spacing: 0.12em;
}

.autumn-page .archive__caption h4 {
    color: #5d4037;
}

/* ========================================
   Winter（冬）ページ専用スタイル
======================================== */

/* Winterページのカラーアクセント */
.winter-page .winter-active {
    position: relative;
}

.winter-page .winter-active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #4682b4, #87ceeb);
    border-radius: 2px;
}

/* 冬のヒーローオーバーレイ（ブルーグレー、クリアな白） */
.hero__overlay--winter {
    background: linear-gradient(to bottom, rgba(176, 224, 230, 0.2), rgba(70, 130, 180, 0.3), rgba(0, 0, 0, 0.45));
}

/* 冬のイントロダクション */
.intro--winter {
    background: linear-gradient(135deg, #f0f8ff 0%, #e6f2ff 100%);
    position: relative;
}

/* 雪の結晶テクスチャ */
.intro--winter::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.3) 1px, transparent 1px),
        radial-gradient(circle at 60% 70%, rgba(255, 255, 255, 0.2) 1px, transparent 1px),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.25) 1px, transparent 1px),
        radial-gradient(circle at 40% 80%, rgba(255, 255, 255, 0.2) 1px, transparent 1px);
    background-size: 200px 200px, 250px 250px, 300px 300px, 180px 180px;
    opacity: 0.5;
    pointer-events: none;
}

/* 冬のアーカイブタイトル */
.archive__title--winter::after {
    background: linear-gradient(90deg, #4682b4, #87ceeb);
}

/* 冬のオーバーレイ（シルバーグレー、ディープブルー） */
.archive__overlay--winter {
    background: linear-gradient(to top, rgba(70, 130, 180, 0.9), rgba(135, 206, 250, 0.7), transparent);
}

/* 自分との対話、感謝、旅立ちのテーマ分け */
.archive__item--reflection,
.archive__item--challenge,
.archive__item--gratitude,
.archive__item--growth,
.archive__item--departure {
    animation-timing-function: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.archive__item--reflection:hover,
.archive__item--challenge:hover {
    transform: translateY(-7px);
}

.archive__item--gratitude:hover,
.archive__item--departure:hover {
    transform: translateY(-6px) scale(1.01);
}

/* 冷たく澄んだ空気の演出 */
.winter-page .archive__photo::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(240, 248, 255, 0.25) 0%, transparent 50%, rgba(70, 130, 180, 0.1) 100%);
    opacity: 0.7;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.winter-page .archive__photo:hover::before {
    opacity: 0.9;
}

/* モノトーンに近いブルーグレートーン */
.winter-page .archive__photo img {
    filter: brightness(0.98) contrast(0.95) saturate(0.85);
    transition: filter 0.4s ease, transform 0.4s ease;
}

.winter-page .archive__photo:hover img {
    filter: brightness(1.02) contrast(1) saturate(1);
}

/* 冬のサイドストーリー - 特別な演出 */
.side-story--winter {
    background: linear-gradient(135deg, #f5faff 0%, #e8f4f8 100%);
    padding: 100px 0;
}

.side-story__single {
    max-width: 900px;
    margin: 0 auto;
    background-color: #fff;
    padding: 60px;
    border-radius: 20px;
    box-shadow: 0 10px 50px rgba(70, 130, 180, 0.2);
    border-top: 5px solid #4682b4;
}

.side-story__single h3 {
    font-size: 1.8rem;
    margin-bottom: 40px;
    text-align: center;
    font-weight: 600;
    color: #2c5f7c;
}

.side-story__message {
    text-align: center;
    margin-bottom: 50px;
}

.side-story__quote {
    font-size: 1.5rem;
    font-weight: 700;
    color: #4682b4;
    line-height: 2;
    letter-spacing: 0.05em;
    position: relative;
    display: inline-block;
    padding: 20px 0;
}

.side-story__quote::before,
.side-story__quote::after {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, transparent, #4682b4, transparent);
}

.side-story__quote::before {
    top: 0;
}

.side-story__quote::after {
    bottom: 0;
}

.side-story__letter {
    font-size: 1.05rem;
    line-height: 2.2;
    color: #555;
    text-align: left;
    margin-bottom: 30px;
    letter-spacing: 0.03em;
}

/* グランドフィナーレ */
.grand-finale {
    padding: 120px 0;
    background: linear-gradient(135deg, #e6f2ff 0%, #f0f8ff 50%, #fff5f7 100%);
    position: relative;
    overflow: hidden;
}

.grand-finale::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 30% 40%, rgba(255, 182, 193, 0.15) 2px, transparent 2px),
        radial-gradient(circle at 70% 60%, rgba(135, 206, 250, 0.15) 2px, transparent 2px);
    background-size: 400px 400px, 350px 350px;
    opacity: 0.6;
    pointer-events: none;
}

.finale__circle {
    text-align: center;
    margin-bottom: 80px;
    position: relative;
    z-index: 1;
}

.finale__spring-preview {
    width: 200px;
    height: 200px;
    margin: 0 auto 40px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(255, 182, 193, 0.3);
    animation: fadeInScale 1.5s ease-out;
}

@keyframes fadeInScale {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.finale__spring-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.finale__message {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 30px;
    background: linear-gradient(135deg, #4682b4 0%, #ffb6c1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeIn 1.5s ease-out 0.5s both;
}

.finale__text {
    font-size: 1.2rem;
    line-height: 2;
    color: #666;
    letter-spacing: 0.05em;
    animation: fadeIn 1.5s ease-out 0.8s both;
}

.finale__cta {
    text-align: center;
    position: relative;
    z-index: 1;
}

.finale__cta-title {
    font-size: 1.8rem;
    margin-bottom: 50px;
    font-weight: 600;
    color: #333;
    animation: fadeIn 1.5s ease-out 1.1s both;
}

.finale__buttons {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    animation: fadeIn 1.5s ease-out 1.4s both;
}

.finale__btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    padding: 35px 45px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 200px;
    border: 2px solid transparent;
}

.finale__btn:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 50px rgba(70, 130, 180, 0.3);
    border-color: #4682b4;
}

.finale__btn-icon {
    font-size: 2.5rem;
}

.finale__btn-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
}

/* 冬のフッター強調 */
.winter-page .footer__season-link.active {
    border-bottom-color: #4682b4;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .side-story__single {
        padding: 40px 30px;
    }

    .side-story__quote {
        font-size: 1.2rem;
    }

    .side-story__letter {
        font-size: 1rem;
    }

    .finale__spring-preview {
        width: 150px;
        height: 150px;
    }

    .finale__message {
        font-size: 2rem;
    }

    .finale__text {
        font-size: 1rem;
    }

    .finale__cta-title {
        font-size: 1.5rem;
    }

    .finale__buttons {
        flex-direction: column;
        gap: 20px;
    }

    .finale__btn {
        min-width: 100%;
        padding: 30px 35px;
    }
}

@media (max-width: 480px) {
    .grand-finale {
        padding: 80px 0;
    }

    .finale__message {
        font-size: 1.6rem;
    }

    .finale__btn {
        padding: 25px 30px;
    }

    .finale__btn-icon {
        font-size: 2rem;
    }

    .finale__btn-text {
        font-size: 1rem;
    }
}

/* ========================================
   TOPページ専用スタイル（新デザイン）
======================================== */

/* TOPページのヒーロー - 4季節のブレンド */
.hero--top {
    position: relative;
}

.hero__seasons-blend {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.season-layer {
    position: absolute;
    width: 50%;
    height: 50%;
    opacity: 0.15;
    mix-blend-mode: overlay;
    pointer-events: none;
}

.season-layer--spring {
    top: 0;
    left: 0;
    background: linear-gradient(135deg, #ffb6c1, #ffc0cb);
}

.season-layer--summer {
    top: 0;
    right: 0;
    background: linear-gradient(135deg, #3498db, #f39c12);
}

.season-layer--autumn {
    bottom: 0;
    left: 0;
    background: linear-gradient(135deg, #d45532, #b8860b);
}

.season-layer--winter {
    bottom: 0;
    right: 0;
    background: linear-gradient(135deg, #4682b4, #87ceeb);
}

/* コンセプト説明セクション */
.about {
    padding: 120px 0;
    background-color: #fff;
}

.about__title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 50px;
    font-weight: 600;
    letter-spacing: 0.05em;
    font-family: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
    color: #1a1a1a;
}

.about__text {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.about__text p {
    font-size: 1.15rem;
    line-height: 2.1;
    margin-bottom: 30px;
    letter-spacing: 0.03em;
    color: #3c3c3c;
}

.about__guide {
    font-size: 1rem !important;
    color: #666 !important;
    font-weight: 500;
}

/* メインギャラリー - ハイライト */
.main-gallery {
    padding: 100px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.main-gallery__title {
    font-size: 2.2rem;
    text-align: center;
    margin-bottom: 70px;
    font-weight: 600;
    letter-spacing: 0.15em;
    font-family: "Noto Serif JP", serif;
    color: #333;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.main-gallery__title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, #667eea, #764ba2);
}

.main-gallery__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.gallery-item {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.gallery-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.2);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-item__overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 15px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-item:hover .gallery-item__overlay {
    opacity: 1;
}

.gallery-item__season {
    color: #fff;
    font-family: "Noto Sans JP", sans-serif;
    font-size: 1.1rem;
    letter-spacing: 0.1em;
    font-weight: 500;
}

/* 季節別カード型ナビゲーション */
.season-navigation {
    padding: 120px 0;
    background-color: #fff;
}

.season-navigation__title {
    font-size: 2.2rem;
    text-align: center;
    margin-bottom: 80px;
    font-weight: 600;
    letter-spacing: 0.15em;
    font-family: "Noto Serif JP", serif;
    color: #333;
}

.season-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 1100px;
    margin: 0 auto;
}

/* 季節カード共通スタイル */
.season-card {
    background-color: #fff;
    padding: 50px 40px;
    border-radius: 16px;
    border: 2px solid #e0e0e0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.season-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.season-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
}

/* 各季節の背景色（ホバー時） */
.season-card--spring::before {
    background: linear-gradient(135deg, rgba(255, 182, 193, 0.08), rgba(255, 192, 203, 0.12));
}

.season-card--summer::before {
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.08), rgba(243, 156, 18, 0.12));
}

.season-card--autumn::before {
    background: linear-gradient(135deg, rgba(212, 85, 50, 0.08), rgba(184, 134, 11, 0.12));
}

.season-card--winter::before {
    background: linear-gradient(135deg, rgba(70, 130, 180, 0.08), rgba(135, 206, 250, 0.12));
}

.season-card:hover::before {
    opacity: 1;
}

.season-card__header {
    margin-bottom: 25px;
}

.season-card__season {
    font-family: "Noto Serif JP", serif;
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    margin-bottom: 10px;
    color: #1a1a1a;
}

.season-card__catchphrase {
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: #444;
}

.season-card__description {
    font-size: 1.05rem;
    line-height: 2;
    color: #555;
    margin-bottom: 35px;
    letter-spacing: 0.03em;
}

/* ゴーストボタン */
.season-card__btn {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 18px 25px;
    border: 2px solid #1a1a1a;
    border-radius: 8px;
    background-color: transparent;
    color: #1a1a1a;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.season-card__btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    transition: left 0.4s ease;
}

.season-card--spring .season-card__btn::before {
    background: linear-gradient(90deg, #ffb6c1, #ffc0cb);
}

.season-card--summer .season-card__btn::before {
    background: linear-gradient(90deg, #3498db, #f39c12);
}

.season-card--autumn .season-card__btn::before {
    background: linear-gradient(90deg, #d45532, #b8860b);
}

.season-card--winter .season-card__btn::before {
    background: linear-gradient(90deg, #4682b4, #87ceeb);
}

.season-card:hover .season-card__btn::before {
    left: 0;
}

.season-card:hover .season-card__btn {
    border-color: transparent;
    color: #fff;
}

.season-card__btn span,
.season-card__btn .season-card__arrow {
    position: relative;
    z-index: 1;
}

.season-card__arrow {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.season-card:hover .season-card__arrow {
    transform: translateX(5px);
}

/* TOPページのフッター */
.top-page footer {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
}

/* レスポンシブ対応 */
@media (max-width: 1024px) {
    .main-gallery__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .season-cards {
        gap: 35px;
    }
}

@media (max-width: 768px) {
    .about {
        padding: 80px 0;
    }

    .about__title {
        font-size: 2rem;
    }

    .about__text p {
        font-size: 1rem;
    }

    .main-gallery {
        padding: 70px 0;
    }

    .main-gallery__title {
        font-size: 1.8rem;
        margin-bottom: 50px;
    }

    .main-gallery__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .season-navigation {
        padding: 80px 0;
    }

    .season-navigation__title {
        font-size: 1.8rem;
        margin-bottom: 50px;
    }

    .season-cards {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .season-card {
        padding: 40px 30px;
    }

    .season-card__season {
        font-size: 1.7rem;
    }

    .season-card__catchphrase {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .about__title {
        font-size: 1.6rem;
    }

    .main-gallery__grid {
        grid-template-columns: 1fr;
    }

    .season-card__season {
        font-size: 1.5rem;
    }

    .season-card__description br {
        display: none;
    }
}