/* ==========================================
   せいじのとなり - カスタムスタイル
   WordPress & Kadence Theme Compatible
   ========================================== */

 :root {
    --seiji-color-base: #F9FAFB;
    --seiji-color-accent1: #4A90E2;
    --seiji-color-accent2: #FFD45F;
    --seiji-color-accent3: #A5D6A7;
    --seiji-color-text: #333333;
    --seiji-color-text-light: #666666;
    --seiji-color-white: #ffffff;
    --seiji-color-footer: #F1F3F5;
    --seiji-color-border: #e5e7eb;
    --seiji-font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    --seiji-border-radius-button: 0.75rem;
    /* 12px - ボタン用 */
    --seiji-border-radius-card: 1rem;
    /* 16px - カード用 */
    --seiji-border-radius-image: 1.75rem;
    /* 28px - 画像用（24-28pxの範囲内） */
    --seiji-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --seiji-shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --seiji-shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --seiji-transition: all 0.3s ease;
}


/* ==========================================
     基本リセットとサイト設定
     ========================================== */

.seiji-site {
    font-family: var(--seiji-font-family) !important;
    background-color: var(--seiji-color-base);
    color: var(--seiji-color-text);
}

.seiji-site *,
.seiji-site *::before,
.seiji-site *::after {
    box-sizing: border-box;
}


/* front-pageのコンテンツエリアをフルワイドに */

.seiji-front-page .content-area,
.seiji-front-page-content {
    max-width: 100%;
    padding: 0;
    margin: 0;
}

.seiji-front-page .site-main {
    padding: 0;
    margin: 0;
}


/* Kadenceのデフォルトスタイルをリセット */

.seiji-front-page .entry-content {
    max-width: 100%;
    padding: 0;
    margin: 0;
}


/* ==========================================
     ヘッダー
     ========================================== */

.seiji-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--seiji-color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    width: 100%;
}

.seiji-header__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.seiji-header__logo {
    flex-shrink: 0;
}

.seiji-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
}

.seiji-logo__icon {
    width: 3.5rem;
    height: 3.5rem;
    background-color: var(--seiji-color-accent1);
    color: white;
    border-radius: var(--seiji-border-radius-image);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.seiji-logo__text {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.seiji-logo__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--seiji-color-text);
    line-height: 1;
    margin: 0;
}

.seiji-logo__subtitle {
    font-size: 0.75rem;
    color: #6b7280;
    line-height: 1;
    margin: 0;
}

.seiji-header__nav {
    display: none;
}

@media (min-width: 1024px) {
    .seiji-header__nav {
        display: block;
        flex: 1;
    }
}

.seiji-nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2.5rem;
    justify-content: center;
}

.seiji-nav-menu li {
    margin: 0;
    padding: 0;
}

.seiji-nav-menu a {
    color: var(--seiji-color-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: color 0.3s ease;
    padding: 0.5rem 0;
    display: block;
}

.seiji-nav-menu .current-menu-item a {
    color: var(--seiji-color-accent1);
}

@media (hover: hover) {
    .seiji-nav-menu a:hover {
        color: var(--seiji-color-accent1);
    }
}

.seiji-header__actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
}

.seiji-header__search,
.seiji-header__instagram,
.seiji-header__mobile-menu {
    width: 3rem;
    height: 3rem;
    border: none;
    background: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--seiji-color-text);
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: 1.25rem;
    text-decoration: none;
}

@media (hover: hover) {
    .seiji-header__search:hover,
    .seiji-header__instagram:hover,
    .seiji-header__mobile-menu:hover {
        background-color: #f3f4f6;
        color: var(--seiji-color-accent1);
    }
}

.seiji-header__mobile-menu {
    display: flex;
}

@media (min-width: 1024px) {
    .seiji-header__mobile-menu {
        display: none;
    }
}


/* ==========================================
     検索モーダル
     ========================================== */

.seiji-search-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 5rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.seiji-search-modal.is-active {
    opacity: 1;
    visibility: visible;
}

.seiji-search-modal__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.seiji-search-modal__content {
    position: relative;
    width: 90%;
    max-width: 800px;
    background: var(--seiji-color-white);
    border-radius: var(--seiji-border-radius-card);
    box-shadow: var(--seiji-shadow-lg);
    padding: 3rem;
    transform: translateY(-20px);
    transition: transform 0.3s ease;
    max-height: 90vh;
    overflow-y: auto;
}

.seiji-search-modal.is-active .seiji-search-modal__content {
    transform: translateY(0);
}

.seiji-search-modal__close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 3rem;
    height: 3rem;
    border: none;
    background-color: #f3f4f6;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--seiji-color-text);
    font-size: 1.25rem;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
}

@media (hover: hover) {
    .seiji-search-modal__close:hover {
        background-color: var(--seiji-color-accent1);
        color: var(--seiji-color-white);
        transform: rotate(90deg);
    }
}

.seiji-search-modal__form-wrapper {
    width: 100%;
}

.seiji-search-modal__title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--seiji-color-text);
    margin: 0 0 2rem 0;
    text-align: center;
}

.seiji-search-form__input-group {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.seiji-search-form__input {
    flex: 1;
    width: 100%;
    height: 4rem;
    padding: 1.25rem 1.5rem;
    border: 2px solid var(--seiji-color-border);
    border-radius: var(--seiji-border-radius-button);
    font-size: 1.125rem;
    font-family: var(--seiji-font-family);
    color: var(--seiji-color-text);
    transition: var(--seiji-transition);
    background-color: var(--seiji-color-white);
}

.seiji-search-form__input:focus {
    outline: none;
    border-color: var(--seiji-color-accent1);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.seiji-search-form__input::placeholder {
    color: var(--seiji-color-text-light);
}

.seiji-search-form__submit {
    height: 4rem;
    padding: 1.25rem 2.5rem;
    background-color: var(--seiji-color-accent1);
    color: var(--seiji-color-white);
    border: none;
    border-radius: var(--seiji-border-radius-button);
    font-size: 1.125rem;
    font-weight: 600;
    font-family: var(--seiji-font-family);
    cursor: pointer;
    transition: var(--seiji-transition);
    white-space: nowrap;
}

@media (hover: hover) {
    .seiji-search-form__submit:hover {
        background-color: #3A7BC8;
        transform: translateY(-2px);
        box-shadow: var(--seiji-shadow-md);
    }
}

.seiji-search-modal__tips {
    margin-top: 2rem;
    padding: 1.5rem;
    background-color: #F9FAFB;
    border-radius: var(--seiji-border-radius-button);
    border-left: 4px solid var(--seiji-color-accent2);
}

.seiji-search-modal__tips p {
    margin: 0;
    color: var(--seiji-color-text-light);
    font-size: 0.9375rem;
    line-height: 1.6;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.seiji-search-modal__tips i {
    color: var(--seiji-color-accent2);
    font-size: 1.125rem;
    margin-top: 0.125rem;
    flex-shrink: 0;
}


/* モーダルが開いているときにbodyのスクロールを防ぐ */

body.search-modal-open,
body.mobile-menu-open {
    overflow: hidden;
}


/* ==========================================
     モバイルメニュー
     ========================================== */

.seiji-mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.seiji-mobile-menu.is-active {
    opacity: 1;
    visibility: visible;
}

.seiji-mobile-menu__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.seiji-mobile-menu__drawer {
    position: absolute;
    top: 0;
    right: 0;
    width: 85%;
    max-width: 400px;
    height: 100%;
    background-color: var(--seiji-color-white);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.seiji-mobile-menu.is-active .seiji-mobile-menu__drawer {
    transform: translateX(0);
}

.seiji-mobile-menu__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem;
    border-bottom: 1px solid var(--seiji-color-border);
    background-color: var(--seiji-color-white);
    position: sticky;
    top: 0;
    z-index: 10;
}

.seiji-logo--mobile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.seiji-logo--mobile .seiji-logo__icon {
    width: 2.5rem;
    height: 2.5rem;
    font-size: 1.125rem;
}

.seiji-logo--mobile .seiji-logo__title {
    font-size: 1.125rem;
}

.seiji-logo--mobile .seiji-logo__subtitle {
    font-size: 0.625rem;
}

.seiji-mobile-menu__close {
    width: 2.5rem;
    height: 2.5rem;
    border: none;
    background-color: #f3f4f6;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--seiji-color-text);
    font-size: 1.125rem;
    cursor: pointer;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

@media (hover: hover) {
    .seiji-mobile-menu__close:hover {
        background-color: var(--seiji-color-accent1);
        color: var(--seiji-color-white);
        transform: rotate(90deg);
    }
}

.seiji-mobile-menu__nav {
    flex: 1;
    padding: 1.5rem 0;
}

.seiji-mobile-nav-menu {
    list-style: none;
    margin: 0;
    padding: 0;
}

.seiji-mobile-nav-menu li {
    margin: 0;
    padding: 0;
    border-bottom: 1px solid var(--seiji-color-border);
}

.seiji-mobile-nav-menu a {
    display: block;
    padding: 1.25rem 1.5rem;
    color: var(--seiji-color-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 1.125rem;
    transition: all 0.3s ease;
    position: relative;
}

.seiji-mobile-nav-menu a::after {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 100%;
    background: linear-gradient(90deg, rgba(74, 144, 226, 0.1) 0%, transparent 100%);
    transition: width 0.3s ease;
    z-index: -1;
}

@media (hover: hover) {
    .seiji-mobile-nav-menu a:hover {
        color: var(--seiji-color-accent1);
        padding-left: 2rem;
    }
    .seiji-mobile-nav-menu a:hover::after {
        width: 100%;
    }
}

.seiji-mobile-nav-menu .current-menu-item a {
    color: var(--seiji-color-accent1);
    background: linear-gradient(90deg, rgba(74, 144, 226, 0.1) 0%, transparent 100%);
    font-weight: 600;
}


/* サブメニュー対応（将来的な拡張用） */

.seiji-mobile-nav-menu .sub-menu {
    list-style: none;
    padding: 0;
    margin: 0;
    background-color: #f9fafb;
}

.seiji-mobile-nav-menu .sub-menu li {
    border-bottom: 1px solid #e5e7eb;
}

.seiji-mobile-nav-menu .sub-menu a {
    padding-left: 2.5rem;
    font-size: 1rem;
    font-weight: 400;
}


/* レスポンシブ対応 */

@media (max-width: 768px) {
    .seiji-search-modal {
        padding-top: 2rem;
    }
    .seiji-search-modal__content {
        width: 95%;
        padding: 2rem 1.5rem;
    }
    .seiji-search-modal__close {
        top: 1rem;
        right: 1rem;
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1rem;
    }
    .seiji-search-modal__title {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
    }
    .seiji-search-form__input-group {
        flex-direction: column;
    }
    .seiji-search-form__input {
        height: 3.5rem;
        padding: 1rem;
        font-size: 1rem;
    }
    .seiji-search-form__submit {
        width: 100%;
        height: 3.5rem;
        padding: 1rem 2rem;
        font-size: 1rem;
    }
    .seiji-search-modal__tips {
        padding: 1rem;
        margin-top: 1.5rem;
    }
    .seiji-search-modal__tips p {
        font-size: 0.875rem;
    }
}


/* ==========================================
     ボタンスタイル
     ========================================== */

.seiji-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border-radius: var(--seiji-border-radius-button);
    font-weight: 500;
    text-decoration: none;
    transition: var(--seiji-transition);
    border: 2px solid transparent;
    font-size: 1.125rem;
    cursor: pointer;
    font-family: var(--seiji-font-family);
    white-space: nowrap;
}

.seiji-btn--primary {
    background-color: var(--seiji-color-accent1);
    color: var(--seiji-color-white);
    box-shadow: var(--seiji-shadow-md);
}

.seiji-btn--outline {
    background-color: var(--seiji-color-white);
    color: var(--seiji-color-accent1);
    border-color: var(--seiji-color-accent1);
}

.seiji-btn--outline-small {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    background-color: var(--seiji-color-white);
    color: var(--seiji-color-accent1);
    border-color: var(--seiji-color-accent1);
}

@media (hover: hover) {
    .seiji-btn--primary:hover {
        background-color: #3A7BC8;
        transform: translateY(-2px);
        box-shadow: var(--seiji-shadow-lg);
        color: var(--seiji-color-white);
        text-decoration: none;
    }
    .seiji-btn--outline:hover {
        background-color: var(--seiji-color-accent1);
        color: var(--seiji-color-white);
        text-decoration: none;
    }
    .seiji-btn--outline-small:hover {
        background-color: var(--seiji-color-accent1);
        color: var(--seiji-color-white);
        text-decoration: none;
    }
}


/* ==========================================
     ヒーローセクション
     ========================================== */

.seiji-hero {
    padding: 5rem 0;
    width: 100%;
    background: linear-gradient(180deg, #FAFBFC 0%, #F9FAFB 100%);
}

.seiji-hero__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    align-items: center;
}

@media (min-width: 1024px) {
    .seiji-hero__container {
        grid-template-columns: 1fr 1fr;
    }
}

.seiji-hero__content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.seiji-hero__badge {
    display: inline-flex;
    align-self: flex-start;
    padding: 0.75rem 1.5rem;
    background-color: #FFD45F;
    color: var(--seiji-color-text);
    border-radius: var(--seiji-border-radius-button);
    font-weight: 500;
    font-size: 1rem;
}

.seiji-hero__title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--seiji-color-text);
    margin: 0;
}

@media (min-width: 1024px) {
    .seiji-hero__title {
        font-size: 4rem;
    }
}

.seiji-hero__accent {
    color: var(--seiji-color-accent1);
}

.seiji-hero__subtitle {
    font-size: 1.25rem;
    line-height: 1.6;
    color: var(--seiji-color-text-light);
    margin: 0;
}

.seiji-hero__buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

@media (min-width: 640px) {
    .seiji-hero__buttons {
        flex-direction: row;
    }
}

.seiji-hero__image {
    display: flex;
    justify-content: center;
}

.seiji-hero__img {
    max-width: 100%;
    height: auto;
    border-radius: var(--seiji-border-radius-image);
    box-shadow: var(--seiji-shadow-lg);
}


/* ==========================================
     カテゴリーセクション
     ========================================== */

.seiji-categories {
    padding: 5rem 0;
    background-color: var(--seiji-color-white);
    width: 100%;
}

.seiji-categories__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.seiji-categories__header {
    text-align: center;
    margin-bottom: 4rem;
}

.seiji-categories__title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--seiji-color-text);
    margin: 0 0 1rem 0;
}

.seiji-categories__subtitle {
    font-size: 1.25rem;
    color: var(--seiji-color-text-light);
    margin: 0;
}

.seiji-categories__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1.5rem;
}

@media (min-width: 1280px) {
    .seiji-categories__grid {
        grid-template-columns: repeat(7, 1fr);
    }
}

.seiji-category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 1rem;
    background: var(--card-bg);
    border-radius: var(--seiji-border-radius-card);
    text-decoration: none;
    transition: var(--seiji-transition);
    box-shadow: var(--seiji-shadow);
}

@media (hover: hover) {
    .seiji-category-card:hover {
        transform: translateY(-4px) scale(1.02);
        box-shadow: var(--seiji-shadow-lg);
        text-decoration: none;
    }
}

.seiji-category-card__icon {
    width: 4rem;
    height: 4rem;
    background-color: var(--card-color);
    border-radius: var(--seiji-border-radius-button);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    box-shadow: var(--seiji-shadow);
}

.seiji-category-card__icon i {
    font-size: 1.5rem;
    color: var(--seiji-color-white);
}

.seiji-category-card__title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--seiji-color-text);
    text-align: center;
    line-height: 1.3;
    margin: 0;
}


/* カテゴリーカラー */

.seiji-category-card--blue {
    --card-color: #4A90E2;
    --card-bg: linear-gradient(135deg, rgba(74, 144, 226, 0.1) 0%, rgba(74, 144, 226, 0.05) 100%);
}

.seiji-category-card--green {
    --card-color: #A5D6A7;
    --card-bg: linear-gradient(135deg, rgba(165, 214, 167, 0.2) 0%, rgba(165, 214, 167, 0.1) 100%);
}

.seiji-category-card--yellow {
    --card-color: #FFD45F;
    --card-bg: linear-gradient(135deg, rgba(255, 212, 95, 0.2) 0%, rgba(255, 212, 95, 0.1) 100%);
}


/* ==========================================
     最新記事セクション
     ========================================== */

.seiji-latest-articles {
    padding: 5rem 0;
    background-color: var(--seiji-color-base);
    width: 100%;
}

.seiji-latest-articles__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.seiji-latest-articles__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 4rem;
}

@media (max-width: 768px) {
    .seiji-latest-articles__header {
        flex-direction: column;
        align-items: flex-start;
        gap: 2rem;
    }
}

.seiji-latest-articles__title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--seiji-color-text);
    margin: 0 0 0.5rem 0;
}

.seiji-latest-articles__subtitle {
    font-size: 1.125rem;
    color: var(--seiji-color-text-light);
    margin: 0;
}

.seiji-articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2.5rem;
}


/* カード全体をリンクでラップ */

.seiji-article-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
    transition: var(--seiji-transition);
}

.seiji-article-card {
    background-color: var(--seiji-color-white);
    border-radius: var(--seiji-border-radius-card);
    overflow: hidden;
    box-shadow: var(--seiji-shadow);
    transition: var(--seiji-transition);
    text-decoration: none;
    display: flex;
    flex-direction: column;
    height: 100%;
}

@media (hover: hover) {
    .seiji-article-card-link:hover .seiji-article-card {
        box-shadow: var(--seiji-shadow-lg);
        transform: translateY(-4px);
    }
}

.seiji-article-card__image {
    position: relative;
    overflow: hidden;
}

.seiji-article-card__img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
}

.seiji-article-card__category {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background-color: var(--seiji-color-accent1);
    color: var(--seiji-color-white);
    padding: 0.5rem 1rem;
    border-radius: var(--seiji-border-radius-button);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--seiji-transition);
    z-index: 10;
    display: inline-block;
}


/* クリック可能なカテゴリーバッジ */

.seiji-article-card__category--clickable {
    cursor: pointer;
}

@media (hover: hover) {
    .seiji-article-card__category--clickable:hover {
        background-color: #3A7BC8;
        transform: scale(1.05);
    }
}


/* カテゴリーページではカーソルをデフォルトに */

.seiji-article-card__category:not(.seiji-article-card__category--clickable) {
    cursor: default;
}

.seiji-article-card__content {
    padding: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.seiji-article-card__title {
    margin: 0 0 1rem 0;
    flex: 1;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--seiji-color-text);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.2s ease;
}

@media (hover: hover) {
    .seiji-article-card-link:hover .seiji-article-card__title {
        color: var(--seiji-color-accent1);
    }
}

.seiji-article-card__excerpt {
    color: var(--seiji-color-text-light);
    line-height: 1.6;
    margin: 0 0 1.5rem 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.seiji-article-card__meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--seiji-color-border);
}

.seiji-article-card__date {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--seiji-color-text-light);
    font-size: 0.875rem;
}

.seiji-article-card__read-more {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--seiji-color-accent1);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

@media (hover: hover) {
    .seiji-article-card-link:hover .seiji-article-card__read-more {
        color: #3A7BC8;
    }
    .seiji-article-card-link:hover .seiji-article-card__read-more i {
        transform: translateX(4px);
    }
    .seiji-article-card__read-more i {
        transition: transform 0.2s ease;
    }
}


/* ==========================================
     特集シリーズセクション
     ========================================== */

.seiji-featured-series {
    padding: 5rem 0;
    background-color: var(--seiji-color-white);
    width: 100%;
}

.seiji-featured-series__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.seiji-featured-series__header {
    text-align: center;
    margin-bottom: 4rem;
}

.seiji-featured-series__badge {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: rgba(255, 212, 95, 0.2);
    color: var(--seiji-color-text);
    border-radius: var(--seiji-border-radius-button);
    font-weight: 500;
    font-size: 1.125rem;
    margin-bottom: 1rem;
}

.seiji-featured-series__title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--seiji-color-text);
    margin: 0 0 1rem 0;
}

.seiji-featured-series__subtitle {
    font-size: 1.125rem;
    color: var(--seiji-color-text-light);
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

.seiji-series-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}


/* シリーズカード全体をリンクでラップ */

.seiji-series-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
    transition: var(--seiji-transition);
}

.seiji-series-card {
    background: var(--series-bg);
    border-radius: var(--seiji-border-radius-card);
    padding: 2rem;
    box-shadow: var(--seiji-shadow);
    transition: var(--seiji-transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

@media (hover: hover) {
    .seiji-series-card-link:hover .seiji-series-card {
        transform: translateY(-4px) scale(1.02);
        box-shadow: var(--seiji-shadow-lg);
    }
}

.seiji-series-card__header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.seiji-series-card__number {
    width: 3rem;
    height: 3rem;
    background-color: var(--series-color);
    color: var(--seiji-color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
}

.seiji-series-card__badge {
    background-color: var(--series-color);
    color: var(--series-text-color, var(--seiji-color-white));
    padding: 0.5rem 1rem;
    border-radius: var(--seiji-border-radius-button);
    font-size: 0.875rem;
    font-weight: 500;
}

.seiji-series-card__title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--seiji-color-text);
    margin: 0 0 1rem 0;
    line-height: 1.3;
}

.seiji-series-card__excerpt {
    color: var(--seiji-color-text-light);
    line-height: 1.6;
    margin: 0 0 2rem 0;
    flex: 1;
}

.seiji-series-card__button {
    display: block;
    width: 100%;
    padding: 1rem;
    background-color: var(--series-color);
    color: var(--series-button-text, var(--seiji-color-white));
    text-align: center;
    text-decoration: none;
    border-radius: var(--seiji-border-radius-button);
    font-weight: 500;
    transition: var(--seiji-transition);
}

@media (hover: hover) {
    .seiji-series-card-link:hover .seiji-series-card__button {
        opacity: 0.9;
        transform: translateY(-2px);
    }
}


/* シリーズカードのカラー */

.seiji-series-card--blue {
    --series-color: #4A90E2;
    --series-bg: linear-gradient(135deg, rgba(74, 144, 226, 0.1) 0%, rgba(74, 144, 226, 0.05) 100%);
    --series-text-color: #fff;
    --series-button-text: #fff;
}

.seiji-series-card--green {
    --series-color: #A5D6A7;
    --series-bg: linear-gradient(135deg, rgba(165, 214, 167, 0.15) 0%, rgba(165, 214, 167, 0.05) 100%);
    --series-text-color: #fff;
    --series-button-text: #fff;
}

.seiji-series-card--yellow {
    --series-color: #FFD45F;
    --series-bg: linear-gradient(135deg, rgba(255, 212, 95, 0.15) 0%, rgba(255, 212, 95, 0.05) 100%);
    --series-text-color: #333;
    --series-button-text: #333;
}


/* ==========================================
     Instagramセクション
     ========================================== */

.seiji-instagram {
    padding: 5rem 0;
    background-color: var(--seiji-color-base);
    width: 100%;
}

.seiji-instagram__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.seiji-instagram__header {
    text-align: center;
    margin-bottom: 4rem;
}

.seiji-instagram__title-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.seiji-instagram__title-wrap i {
    font-size: 2.5rem;
    color: var(--seiji-color-accent1);
}

.seiji-instagram__title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--seiji-color-text);
    margin: 0;
}

.seiji-instagram__subtitle {
    font-size: 1.125rem;
    color: var(--seiji-color-text-light);
    margin: 0 0 2rem 0;
}

.seiji-instagram__follow-btn {
    background: linear-gradient(135deg, var(--seiji-color-accent1) 0%, var(--seiji-color-accent3) 100%);
    color: var(--seiji-color-white);
    padding: 1rem 2.5rem;
    border-radius: var(--seiji-border-radius-button);
    text-decoration: none;
    font-weight: 500;
    font-size: 1.125rem;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: var(--seiji-shadow-md);
    transition: var(--seiji-transition);
}

@media (hover: hover) {
    .seiji-instagram__follow-btn:hover {
        box-shadow: var(--seiji-shadow-lg);
        transform: translateY(-2px);
        color: var(--seiji-color-white);
        text-decoration: none;
    }
}

.seiji-instagram__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.seiji-instagram-post__link {
    text-decoration: none;
}


/* タブレット: 2列 */

@media (max-width: 1024px) {
    .seiji-instagram__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}


/* モバイル: 1列（既存のメディアクエリで対応済み） */

.seiji-instagram-post {
    background-color: var(--seiji-color-white);
    border-radius: var(--seiji-border-radius-card);
    overflow: hidden;
    box-shadow: var(--seiji-shadow);
    transition: var(--seiji-transition);
}

@media (hover: hover) {
    .seiji-instagram-post:hover {
        box-shadow: var(--seiji-shadow-lg);
        transform: translateY(-4px);
    }
}

.seiji-instagram-post__image {
    width: 100%;
    height: 320px;
    object-fit: cover;
    display: block;
}

.seiji-instagram-post__caption {
    padding: 1.5rem;
}

.seiji-instagram-post__text {
    color: var(--seiji-color-text-light);
    line-height: 1.6;
    margin: 0;
}


/* ==========================================
     フッター
     ========================================== */

.seiji-footer {
    background-color: var(--seiji-color-footer);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--seiji-color-border);
    width: 100%;
}

.seiji-footer__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.seiji-footer__content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

@media (min-width: 768px) {
    .seiji-footer__content {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

.seiji-footer__brand {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.seiji-logo--footer {
    margin-bottom: 0.5rem;
}

.seiji-footer__description {
    color: var(--seiji-color-text-light);
    line-height: 1.6;
    margin: 0;
}

.seiji-footer__profile {
    background: white;
    padding: 1.5rem;
    border-radius: var(--seiji-border-radius-button);
    box-shadow: var(--seiji-shadow);
}

.seiji-footer__profile p {
    margin: 0.5rem 0;
    color: var(--seiji-color-text-light);
    line-height: 1.6;
}

.seiji-footer__profile p:first-child {
    color: var(--seiji-color-text);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.seiji-footer__links h5,
.seiji-footer__social h5 {
    color: var(--seiji-color-text);
    font-weight: 600;
    font-size: 1.25rem;
    margin: 0 0 1rem 0;
}

.seiji-footer__links ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.seiji-footer__links li {
    margin-bottom: 0.75rem;
}

.seiji-footer__links a {
    color: var(--seiji-color-text-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

@media (hover: hover) {
    .seiji-footer__links a:hover {
        color: var(--seiji-color-accent1);
    }
}

.seiji-social-links {
    display: flex;
    gap: 1rem;
}

.seiji-social-links a {
    width: 3.5rem;
    height: 3.5rem;
    background: white;
    border: 2px solid var(--seiji-color-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--seiji-color-text-light);
    transition: all 0.3s ease;
    font-size: 1.25rem;
    text-decoration: none;
}

@media (hover: hover) {
    .seiji-social-links a:hover {
        border-color: var(--seiji-color-accent1);
        color: var(--seiji-color-accent1);
        transform: translateY(-2px);
    }
}

.seiji-footer__bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #d1d5db;
}

.seiji-footer__bottom p {
    color: var(--seiji-color-text-light);
    margin: 0;
}


/* ==========================================
     レスポンシブデザイン
     ========================================== */

@media (max-width: 1023px) {
    .seiji-header__container {
        padding: 0.75rem 1rem;
    }
    .seiji-logo__icon {
        width: 3rem;
        height: 3rem;
        font-size: 1.25rem;
    }
    .seiji-logo__title {
        font-size: 1.25rem;
    }
    .seiji-logo__subtitle {
        font-size: 0.625rem;
    }
}

@media (max-width: 768px) {
    .seiji-hero {
        padding: 3rem 0;
    }
    .seiji-hero__title {
        font-size: 2.5rem;
    }
    .seiji-hero__subtitle {
        font-size: 1.125rem;
    }
    .seiji-categories,
    .seiji-latest-articles,
    .seiji-featured-series,
    .seiji-instagram {
        padding: 3rem 0;
    }
    .seiji-categories__title,
    .seiji-latest-articles__title,
    .seiji-featured-series__title,
    .seiji-instagram__title {
        font-size: 2rem;
    }
    .seiji-categories__grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 1rem;
    }
    .seiji-category-card {
        padding: 1.5rem 0.75rem;
    }
    .seiji-category-card__icon {
        width: 3rem;
        height: 3rem;
    }
    .seiji-category-card__icon i {
        font-size: 1.25rem;
    }
    .seiji-category-card__title {
        font-size: 0.75rem;
    }
    .seiji-articles-grid,
    .seiji-series-grid,
    .seiji-instagram__grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}


/* ==========================================
     Kadence Theme 互換性調整
     ========================================== */


/* Kadenceのコンテンツ幅制限を解除 */

.seiji-front-page #inner-wrap,
.seiji-front-page .content-area,
.seiji-front-page .site-container {
    max-width: 100%;
    padding: 0;
}


/* Kadenceのデフォルトマージンをリセット */

.seiji-front-page .entry-content>* {
    margin-top: 0;
    margin-bottom: 0;
}


/* Kadenceのデフォルトパディングをリセット */

.seiji-front-page .entry-content {
    padding: 0;
}


/* すべてのセクションが全幅表示されるように */

.seiji-hero,
.seiji-categories,
.seiji-latest-articles,
.seiji-featured-series,
.seiji-instagram {
    width: 100%;
    max-width: 100%;
}


/* ==========================================
     カテゴリーアーカイブページ
     ========================================== */

.seiji-category-archive-header {
    padding: 4rem 0;
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.05) 0%, rgba(165, 214, 167, 0.05) 100%);
    border-bottom: 1px solid var(--seiji-color-border);
    width: 100%;
}

.seiji-category-archive-header__container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

.seiji-category-archive-header__icon {
    width: 6rem;
    height: 6rem;
    margin: 0 auto 2rem;
    background-color: var(--seiji-color-accent1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--seiji-shadow-lg);
}

.seiji-category-archive-header__icon i {
    font-size: 2.5rem;
    color: var(--seiji-color-white);
}

.seiji-category-archive-header__title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--seiji-color-text);
    margin: 0 0 1.5rem 0;
    line-height: 1.2;
}

.seiji-category-archive-header__description {
    font-size: 1.25rem;
    color: var(--seiji-color-text-light);
    line-height: 1.8;
    margin: 0 0 2rem 0;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.seiji-category-archive-header__meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.seiji-category-archive-header__count {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--seiji-color-white);
    border: 2px solid var(--seiji-color-border);
    border-radius: var(--seiji-border-radius-button);
    color: var(--seiji-color-text);
    font-weight: 600;
    font-size: 1rem;
    box-shadow: var(--seiji-shadow);
}

.seiji-category-archive-header__count i {
    color: var(--seiji-color-accent1);
    font-size: 1.125rem;
}


/* レスポンシブ対応 */

@media (max-width: 768px) {
    .seiji-category-archive-header {
        padding: 2.5rem 0;
    }
    .seiji-category-archive-header__container {
        padding: 0 1.5rem;
    }
    .seiji-category-archive-header__icon {
        width: 4.5rem;
        height: 4.5rem;
        margin-bottom: 1.5rem;
    }
    .seiji-category-archive-header__icon i {
        font-size: 2rem;
    }
    .seiji-category-archive-header__title {
        font-size: 2rem;
        margin-bottom: 1rem;
    }
    .seiji-category-archive-header__description {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }
    .seiji-category-archive-header__count {
        font-size: 0.9375rem;
        padding: 0.625rem 1.25rem;
    }
}


/* ==========================================
     タグアーカイブページ
     ========================================== */

.seiji-tag-archive-header {
    padding: 4rem 0;
    background: linear-gradient(135deg, rgba(255, 212, 95, 0.08) 0%, rgba(165, 214, 167, 0.05) 100%);
    border-bottom: 1px solid var(--seiji-color-border);
    width: 100%;
}

.seiji-tag-archive-header__container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

.seiji-tag-archive-header__icon {
    width: 6rem;
    height: 6rem;
    margin: 0 auto 2rem;
    background-color: var(--seiji-color-accent2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--seiji-shadow-lg);
}

.seiji-tag-archive-header__icon i {
    font-size: 2.5rem;
    color: var(--seiji-color-white);
}

.seiji-tag-archive-header__title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--seiji-color-text);
    margin: 0 0 1.5rem 0;
    line-height: 1.2;
}

.seiji-tag-archive-header__description {
    font-size: 1.25rem;
    color: var(--seiji-color-text-light);
    line-height: 1.8;
    margin: 0 0 2rem 0;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.seiji-tag-archive-header__meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.seiji-tag-archive-header__count {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--seiji-color-white);
    border: 2px solid var(--seiji-color-border);
    border-radius: var(--seiji-border-radius-button);
    color: var(--seiji-color-text);
    font-weight: 600;
    font-size: 1rem;
    box-shadow: var(--seiji-shadow);
}

.seiji-tag-archive-header__count i {
    color: var(--seiji-color-accent2);
    font-size: 1.125rem;
}


/* レスポンシブ対応 */

@media (max-width: 768px) {
    .seiji-tag-archive-header {
        padding: 2.5rem 0;
    }
    .seiji-tag-archive-header__container {
        padding: 0 1.5rem;
    }
    .seiji-tag-archive-header__icon {
        width: 4.5rem;
        height: 4.5rem;
        margin-bottom: 1.5rem;
    }
    .seiji-tag-archive-header__icon i {
        font-size: 2rem;
    }
    .seiji-tag-archive-header__title {
        font-size: 2rem;
        margin-bottom: 1rem;
    }
    .seiji-tag-archive-header__description {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }
    .seiji-tag-archive-header__count {
        font-size: 0.9375rem;
        padding: 0.625rem 1.25rem;
    }
}


/* ==========================================
     記事一覧ページ
     ========================================== */

.seiji-blog-header {
    padding: 3rem 0;
    background-color: var(--seiji-color-white);
    width: 100%;
}

.seiji-blog-header__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    text-align: center;
}

.seiji-blog-header__title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--seiji-color-text);
    margin: 0 0 1rem 0;
}

.seiji-blog-header__subtitle {
    font-size: 1.125rem;
    color: var(--seiji-color-text-light);
    margin: 0;
}

.seiji-blog-content {
    padding: 3rem 0;
    background-color: var(--seiji-color-base);
    width: 100%;
}

.seiji-blog-content__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.seiji-no-posts {
    padding: 5rem 0;
    background-color: var(--seiji-color-base);
    width: 100%;
}

.seiji-no-posts__container {
    max-width: 600px;
    margin: 0 auto;
    padding: 3rem 2rem;
    text-align: center;
    background: var(--seiji-color-white);
    border-radius: var(--seiji-border-radius-card);
    box-shadow: var(--seiji-shadow);
}

.seiji-no-posts__icon {
    width: 6rem;
    height: 6rem;
    margin: 0 auto 2rem;
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.1) 0%, rgba(74, 144, 226, 0.05) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.seiji-no-posts__icon i {
    font-size: 3rem;
    color: var(--seiji-color-accent1);
}

.seiji-no-posts h1,
.seiji-no-posts h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--seiji-color-text);
    margin: 0 0 1rem 0;
}

.seiji-no-posts p {
    font-size: 1.125rem;
    color: var(--seiji-color-text-light);
    margin: 0 0 2rem 0;
    line-height: 1.6;
}

.seiji-pagination {
    margin-top: 4rem;
    text-align: center;
}

.seiji-pagination .pagination {
    overflow: visible;
}

.seiji-pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    margin: 0 0.25rem;
    border-radius: 50%;
    background-color: var(--seiji-color-white);
    color: var(--seiji-color-text);
    text-decoration: none;
    font-weight: 500;
    transition: var(--seiji-transition);
    box-shadow: var(--seiji-shadow);
    border: none;
}

.seiji-pagination .page-numbers.current {
    background-color: var(--seiji-color-accent1);
    color: var(--seiji-color-white);
    transform: translateY(-2px);
    box-shadow: var(--seiji-shadow-md);
}

@media (hover: hover) {
    .seiji-pagination .page-numbers:hover {
        background-color: var(--seiji-color-accent1);
        color: var(--seiji-color-white);
        transform: translateY(-2px);
        box-shadow: var(--seiji-shadow-md);
    }
}

.seiji-pagination .page-numbers.prev,
.seiji-pagination .page-numbers.next {
    padding: 0 1rem;
    width: auto;
    border-radius: var(--seiji-border-radius-button);
    font-size: 0.875rem;
}

.seiji-pagination .page-numbers.dots {
    background: none;
    box-shadow: none;
    color: var(--seiji-color-text-light);
}

@media (hover: hover) {
    .seiji-pagination .page-numbers.dots:hover {
        background: none;
        transform: none;
        box-shadow: none;
        color: var(--seiji-color-text-light);
    }
}


/* ==========================================
     検索結果ページ
     ========================================== */

.seiji-search-results {
    padding: 3rem 0;
    background-color: var(--seiji-color-base);
    width: 100%;
    min-height: 60vh;
}

.seiji-search-results__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.seiji-search-results__header {
    text-align: center;
    margin-bottom: 4rem;
    padding: 2rem;
    background: var(--seiji-color-white);
    border-radius: var(--seiji-border-radius-card);
    box-shadow: var(--seiji-shadow);
}

.seiji-search-results__title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--seiji-color-text);
    margin: 0 0 1rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.seiji-search-results__title i {
    color: var(--seiji-color-accent1);
    font-size: 1.75rem;
}

.seiji-search-results__count {
    font-size: 1.125rem;
    color: var(--seiji-color-text-light);
    margin: 0;
}


/* 検索結果なしの場合 */

.seiji-no-results {
    max-width: 800px;
    margin: 0 auto;
    padding: 4rem 2rem;
    text-align: center;
    background: var(--seiji-color-white);
    border-radius: var(--seiji-border-radius-card);
    box-shadow: var(--seiji-shadow);
}

.seiji-no-results__icon {
    width: 6rem;
    height: 6rem;
    margin: 0 auto 2rem;
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.1) 0%, rgba(74, 144, 226, 0.05) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.seiji-no-results__icon i {
    font-size: 3rem;
    color: var(--seiji-color-accent1);
}

.seiji-no-results__title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--seiji-color-text);
    margin: 0 0 1rem 0;
    line-height: 1.4;
}

.seiji-no-results__message {
    font-size: 1.125rem;
    color: var(--seiji-color-text-light);
    margin: 0 0 2.5rem 0;
}

.seiji-no-results__search-form {
    margin-bottom: 3rem;
}

.seiji-no-results__suggestions {
    margin-bottom: 3rem;
    text-align: left;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    padding: 2rem;
    background-color: #F9FAFB;
    border-radius: var(--seiji-border-radius-button);
}

.seiji-no-results__suggestions h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--seiji-color-text);
    margin: 0 0 1rem 0;
}

.seiji-no-results__suggestions ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.seiji-no-results__suggestions li {
    padding: 0.5rem 0;
    color: var(--seiji-color-text-light);
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.seiji-no-results__suggestions li::before {
    content: "✓";
    color: var(--seiji-color-accent1);
    font-weight: 700;
    flex-shrink: 0;
}

.seiji-no-results__action {
    margin-top: 2rem;
}


/* レスポンシブ対応 */

@media (max-width: 768px) {
    .seiji-search-results {
        padding: 2rem 0;
    }
    .seiji-search-results__header {
        padding: 1.5rem;
        margin-bottom: 2.5rem;
    }
    .seiji-search-results__title {
        font-size: 1.5rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    .seiji-search-results__title i {
        font-size: 1.5rem;
    }
    .seiji-search-results__count {
        font-size: 1rem;
    }
    .seiji-no-results {
        padding: 2.5rem 1.5rem;
    }
    .seiji-no-results__icon {
        width: 4.5rem;
        height: 4.5rem;
        margin-bottom: 1.5rem;
    }
    .seiji-no-results__icon i {
        font-size: 2rem;
    }
    .seiji-no-results__title {
        font-size: 1.25rem;
    }
    .seiji-no-results__message {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    .seiji-no-results__suggestions {
        padding: 1.5rem;
        margin-bottom: 2rem;
    }
}


/* ==========================================
     投稿ページ（single.php）
     ========================================== */

.seiji-single {
    background-color: var(--seiji-color-base);
}


/* 投稿ヘッダー */

.seiji-post-header {
    background-color: var(--seiji-color-white);
    border-bottom: 1px solid var(--seiji-color-border);
}

.seiji-post-header__content {
    background-color: var(--seiji-color-white);
    padding: 3rem 0;
}

.seiji-post-header__container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 2rem;
}

.seiji-post-header__title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--seiji-color-text);
    line-height: 1.4;
    margin: 0 0 1.5rem 0;
}

.seiji-post-header__meta {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
    color: var(--seiji-color-text-light);
    font-size: 1rem;
}

.seiji-post-header__date,
.seiji-post-header__category-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.seiji-post-header__category-link a {
    color: var(--seiji-color-accent1);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

@media (hover: hover) {
    .seiji-post-header__category-link a:hover {
        color: #3A7BC8;
        text-decoration: underline;
    }
}


/* 投稿コンテンツ */

.seiji-post-content {
    padding: 4rem 0;
    background-color: var(--seiji-color-base);
}

.seiji-post-content__container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 2rem;
}

.seiji-post-content__body {
    background-color: var(--seiji-color-white);
    padding: 3rem;
    border-radius: var(--seiji-border-radius-card);
    box-shadow: var(--seiji-shadow);
    line-height: 1.8;
    color: var(--seiji-color-text);
}

.seiji-post-content__body h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--seiji-color-text);
    margin: 3rem 0 1.5rem 0;
    padding-bottom: 0.75rem;
    border-bottom: 3px solid var(--seiji-color-accent1);
}

.seiji-post-content__body h2:first-child {
    margin-top: 0;
}

.seiji-post-content__body h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--seiji-color-text);
    margin: 2.5rem 0 1rem 0;
    padding-left: 1rem;
    border-left: 4px solid var(--seiji-color-accent1);
}

.seiji-post-content__body h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--seiji-color-text);
    margin: 2rem 0 1rem 0;
}

.seiji-post-content__body p {
    margin: 1.5rem 0;
    font-size: 1.125rem;
}

.seiji-post-content__body ul,
.seiji-post-content__body ol {
    margin: 1.5rem 0;
    padding-left: 2rem;
}

.seiji-post-content__body li {
    margin: 0.75rem 0;
    font-size: 1.125rem;
}

.seiji-post-content__body a {
    color: var(--seiji-color-accent1);
    text-decoration: underline;
    transition: all 0.3s ease;
}

@media (hover: hover) {
    .seiji-post-content__body a:hover {
        color: #3A7BC8;
    }
}

.seiji-post-content__body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--seiji-border-radius-image);
    margin: 2rem 0;
    box-shadow: var(--seiji-shadow);
}

.seiji-post-content__body blockquote {
    margin: 2rem 0;
    padding: 1.5rem 2rem;
    background-color: #F9FAFB;
    border-left: 4px solid var(--seiji-color-accent2);
    border-radius: var(--seiji-border-radius-button);
    font-style: italic;
    color: var(--seiji-color-text-light);
}

.seiji-post-content__body code {
    background-color: #f3f4f6;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

.seiji-post-content__body pre {
    background-color: #1e293b;
    color: #e2e8f0;
    padding: 1.5rem;
    border-radius: var(--seiji-border-radius-button);
    overflow-x: auto;
    margin: 2rem 0;
}

.seiji-post-content__body pre code {
    background-color: transparent;
    padding: 0;
    color: inherit;
}

.seiji-post-content__body table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
}

.seiji-post-content__body th,
.seiji-post-content__body td {
    padding: 1rem;
    border: 1px solid var(--seiji-color-border);
    text-align: left;
}

.seiji-post-content__body th {
    background-color: #f3f4f6;
    font-weight: 600;
}


/* ページネーション */

.seiji-post-pagination {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--seiji-color-border);
    display: flex;
    gap: 0.5rem;
}

.seiji-post-pagination a {
    padding: 0.75rem 1.25rem;
    background-color: var(--seiji-color-white);
    border: 2px solid var(--seiji-color-border);
    border-radius: var(--seiji-border-radius-button);
    color: var(--seiji-color-text);
    text-decoration: none;
    font-weight: 500;
    transition: var(--seiji-transition);
}

@media (hover: hover) {
    .seiji-post-pagination a:hover {
        border-color: var(--seiji-color-accent1);
        color: var(--seiji-color-accent1);
    }
}


/* タグ */

.seiji-post-tags {
    margin-top: 3rem;
    padding: 2rem;
    background-color: #F9FAFB;
    border-radius: var(--seiji-border-radius-card);
}

.seiji-post-tags__title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--seiji-color-text);
    margin-bottom: 1rem;
}

.seiji-post-tags__title i {
    color: var(--seiji-color-accent1);
}

.seiji-post-tags__list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.seiji-post-tag {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background-color: var(--seiji-color-white);
    color: var(--seiji-color-accent1);
    border: 2px solid var(--seiji-color-accent1);
    border-radius: var(--seiji-border-radius-button);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: var(--seiji-transition);
}

@media (hover: hover) {
    .seiji-post-tag:hover {
        background-color: var(--seiji-color-accent1);
        color: var(--seiji-color-white);
    }
}


/* シェアボタン */

.seiji-post-share {
    margin-top: 3rem;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.05) 0%, rgba(165, 214, 167, 0.05) 100%);
    border-radius: var(--seiji-border-radius-card);
    border: 2px solid var(--seiji-color-border);
}

.seiji-post-share__title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--seiji-color-text);
    margin-bottom: 1.5rem;
}

.seiji-post-share__title i {
    color: var(--seiji-color-accent1);
}

.seiji-post-share__buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
}

.seiji-post-share__button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    border: none;
    border-radius: var(--seiji-border-radius-button);
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--seiji-font-family);
    text-decoration: none;
    cursor: pointer;
    transition: var(--seiji-transition);
}

.seiji-post-share__button--twitter {
    background-color: #1DA1F2;
    color: white;
}

.seiji-post-share__button--facebook {
    background-color: #1877F2;
    color: white;
}

.seiji-post-share__button--line {
    background-color: #06C755;
    color: white;
}

.seiji-post-share__button--copy {
    background-color: #6b7280;
    color: white;
}

@media (hover: hover) {
    .seiji-post-share__button--twitter:hover {
        background-color: #1a8cd8;
        transform: translateY(-2px);
        box-shadow: var(--seiji-shadow-md);
        color: white;
    }
    .seiji-post-share__button--facebook:hover {
        background-color: #1568d8;
        transform: translateY(-2px);
        box-shadow: var(--seiji-shadow-md);
        color: white;
    }
    .seiji-post-share__button--line:hover {
        background-color: #05b34c;
        transform: translateY(-2px);
        box-shadow: var(--seiji-shadow-md);
        color: white;
    }
    .seiji-post-share__button--copy:hover {
        background-color: #4b5563;
        transform: translateY(-2px);
        box-shadow: var(--seiji-shadow-md);
        color: white;
    }
}


/* 記事ナビゲーション */

.seiji-post-navigation {
    padding: 3rem 0;
    background-color: var(--seiji-color-white);
    border-top: 1px solid var(--seiji-color-border);
    border-bottom: 1px solid var(--seiji-color-border);
}

.seiji-post-navigation__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.seiji-post-navigation__link {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.05) 0%, rgba(74, 144, 226, 0.02) 100%);
    border: 2px solid var(--seiji-color-border);
    border-radius: var(--seiji-border-radius-card);
    text-decoration: none;
    transition: var(--seiji-transition);
}

@media (hover: hover) {
    .seiji-post-navigation__link:hover {
        border-color: var(--seiji-color-accent1);
        box-shadow: var(--seiji-shadow-md);
        transform: translateY(-2px);
    }
}

.seiji-post-navigation__link--prev {
    text-align: left;
}

.seiji-post-navigation__link--next {
    text-align: right;
}

.seiji-post-navigation__label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--seiji-color-text-light);
    font-size: 0.9375rem;
    font-weight: 500;
}

.seiji-post-navigation__link--next .seiji-post-navigation__label {
    justify-content: flex-end;
}

.seiji-post-navigation__label i {
    color: var(--seiji-color-accent1);
}

.seiji-post-navigation__title {
    color: var(--seiji-color-text);
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}


/* 関連記事 */

.seiji-related-posts {
    padding: 5rem 0;
    background-color: var(--seiji-color-base);
}

.seiji-related-posts__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.seiji-related-posts__title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--seiji-color-text);
    margin: 0 0 3rem 0;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.seiji-related-posts__title i {
    color: var(--seiji-color-accent1);
}


/* レスポンシブ対応 */

@media (max-width: 768px) {
    .seiji-post-header__img {
        height: 300px;
    }
    .seiji-post-header__category {
        bottom: 1rem;
        left: 1rem;
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
    .seiji-post-header__content {
        padding: 2rem 0;
    }
    .seiji-post-header__container {
        padding: 0 1.5rem;
    }
    .seiji-post-header__title {
        font-size: 1.75rem;
        margin-bottom: 1rem;
    }
    .seiji-post-header__meta {
        gap: 1rem;
        font-size: 0.9375rem;
    }
    .seiji-post-content {
        padding: 2.5rem 0;
    }
    .seiji-post-content__container {
        padding: 0 1rem;
    }
    .seiji-post-content__body {
        padding: 2rem 1.5rem;
    }
    .seiji-post-content__body h2 {
        font-size: 1.5rem;
        margin: 2rem 0 1rem 0;
    }
    .seiji-post-content__body h3 {
        font-size: 1.25rem;
        margin: 1.5rem 0 0.75rem 0;
    }
    .seiji-post-content__body p,
    .seiji-post-content__body li {
        font-size: 1rem;
    }
    .seiji-post-tags,
    .seiji-post-share {
        padding: 1.5rem;
        margin-top: 2rem;
    }
    .seiji-post-share__buttons {
        grid-template-columns: 1fr;
    }
    .seiji-post-navigation {
        padding: 2rem 0;
    }
    .seiji-post-navigation__container {
        padding: 0 1rem;
        grid-template-columns: 1fr;
    }
    .seiji-post-navigation__link {
        padding: 1.5rem;
    }
    .seiji-related-posts {
        padding: 3rem 0;
    }
    .seiji-related-posts__container {
        padding: 0 1rem;
    }
    .seiji-related-posts__title {
        font-size: 1.5rem;
        margin-bottom: 2rem;
    }
}


/* ==========================================
   記事コンテンツ装飾
   ========================================== */


/* リードカード */

.lead-card {
    background-color: #F9FAFB;
    border-left: 4px solid #4A90E2;
    border-radius: 24px;
    padding: 20px 24px;
    box-shadow: 0 4px 14px rgba(227, 232, 234, 0.4);
    margin: 2rem 0;
    font-size: 1.05rem;
    line-height: 1.8;
    color: #333333;
}

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


/* H2装飾 - アクセントライン */

.seiji-post-content__body h2,
.entry-content h2 {
    position: relative;
    padding-bottom: 12px;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    font-size: 1.75rem;
    font-weight: 700;
    color: #333333;
}

.seiji-post-content__body h2::after,
.entry-content h2::after {
    content: '';
    display: block;
    width: 48px;
    height: 3px;
    background: #4A90E2;
    margin-top: 8px;
}


/* H3装飾 - 細ライン */

.seiji-post-content__body h3,
.entry-content h3 {
    position: relative;
    padding-left: 16px;
    border-left: 2px solid #A5D6A7;
    margin-top: 2.5rem;
    margin-bottom: 1.25rem;
    font-size: 1.4rem;
    font-weight: 600;
    color: #333333;
}


/* プルクオート（引用） */

.seiji-post-content__body blockquote,
.entry-content blockquote {
    border-left: 4px solid #E3E8EA;
    background: #FFFFFF;
    border-radius: 16px;
    padding: 20px 24px;
    margin: 2rem 0;
    font-size: 1.06em;
    line-height: 1.9;
    color: #333333;
    box-shadow: 0 2px 8px rgba(227, 232, 234, 0.3);
}

.seiji-post-content__body blockquote p,
.entry-content blockquote p {
    margin-top: 0;
}

.seiji-post-content__body blockquote p:last-child,
.entry-content blockquote p:last-child {
    margin-bottom: 0;
}


/* 情報ボックス共通スタイル */

.info-box {
    border-radius: 16px;
    padding: 18px 20px;
    margin: 2rem 0;
    line-height: 1.8;
    box-shadow: 0 2px 10px rgba(227, 232, 234, 0.25);
}

.info-box__heading {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.info-box__icon {
    font-size: 1.25rem;
    line-height: 1;
    display: inline-block;
    width: 1em;
    text-align: center;
}

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


/* 注記ボックス */

.info-box--note {
    background: #F3F8FF;
    border: 1px solid #D9E7FF;
}

.info-box--note .info-box__heading {
    color: #4A90E2;
}


/* ヒントボックス */

.info-box--tip {
    background: #F1FAF3;
    border: 1px solid #D4EED8;
}

.info-box--tip .info-box__heading {
    color: #5FAD6B;
}


/* 注意ボックス */

.info-box--warn {
    background: #FFF8DF;
    border: 1px solid #FFE7A6;
}

.info-box--warn .info-box__heading {
    color: #E8A800;
}


/* セクション区切り帯 */

.section-divider {
    height: 80px;
    margin: 3rem 0;
    background: linear-gradient(to bottom, #FFFFFF, #F9FAFB);
    border: none;
}


/* 用語チップ */

.chip {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 9999px;
    background: #EEF5FE;
    color: #4A90E2;
    font-weight: 600;
    font-size: 0.85rem;
    line-height: 1.4;
    white-space: nowrap;
    margin: 0 4px;
}


/* 目次（TOC） */

.toc-container {
    background: #F9FAFB;
    border: 2px solid #E3E8EA;
    border-radius: 20px;
    padding: 24px 28px;
    margin: 2.5rem 0 3rem 0;
    box-shadow: 0 4px 14px rgba(227, 232, 234, 0.4);
}

.toc-container__title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    color: #333333;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid #E3E8EA;
}

.toc-container__icon {
    color: #4A90E2;
    font-size: 1.3rem;
}

.toc-list {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.toc-list li {
    margin: 8px 0;
    padding-left: 0;
}

.toc-list a {
    color: #333333;
    text-decoration: none;
    display: inline-block;
    padding: 6px 0;
    transition: all 0.2s ease;
    border-bottom: 1px solid transparent;
    font-weight: 500;
}

.toc-list a:hover {
    color: #4A90E2;
    border-bottom-color: #4A90E2;
    transform: translateX(4px);
}

.toc-list--h2 {
    font-size: 1rem;
}

.toc-list--h3 {
    padding-left: 1.5rem;
    font-size: 0.95rem;
    color: #666666;
}

.toc-list--h3 a {
    color: #666666;
}

.toc-list--h3 a:hover {
    color: #4A90E2;
}


/* 目次トグル（モバイル用） */

.toc-toggle {
    display: none;
}

.toc-toggle summary {
    cursor: pointer;
    user-select: none;
    list-style: none;
    padding: 4px 0;
}

.toc-toggle summary::-webkit-details-marker {
    display: none;
}

.toc-toggle summary::after {
    content: ' ▼';
    font-size: 0.85em;
    color: #4A90E2;
    margin-left: 8px;
}

.toc-toggle[open] summary::after {
    content: ' ▲';
}


/* スクリーンリーダー専用テキスト */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}


/* モバイル対応 */

@media (max-width: 768px) {
    .lead-card {
        border-radius: 20px;
        padding: 16px 20px;
        margin: 1.5rem 0;
        font-size: 1rem;
    }
    .seiji-post-content__body h2,
    .entry-content h2 {
        font-size: 1.5rem;
        margin-top: 2.5rem;
    }
    .seiji-post-content__body h3,
    .entry-content h3 {
        font-size: 1.25rem;
        margin-top: 2rem;
        padding-left: 12px;
    }
    .info-box {
        border-radius: 12px;
        padding: 14px 16px;
    }
    .info-box__heading {
        font-size: 0.95rem;
    }
    .toc-container {
        border-radius: 16px;
        padding: 18px 20px;
        margin: 2rem 0;
    }
    .toc-container__title {
        font-size: 1.1rem;
    }
    /* モバイルで目次を折りたたみ可能にする */
    .toc-container .toc-list {
        display: none;
    }
    .toc-toggle {
        display: block;
    }
    .toc-toggle[open]+.toc-list {
        display: block;
    }
    .section-divider {
        height: 60px;
        margin: 2rem 0;
    }
    .chip {
        padding: 3px 8px;
        font-size: 0.8rem;
    }
}


/* ==========================================
   SNS準備中セクション
   ========================================== */

.seiji-sns-coming-soon {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.seiji-sns-coming-soon__icons {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.seiji-sns-icon {
    position: relative;
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: #E6E8EB;
    color: #999999;
    transition: all 0.3s ease;
    cursor: not-allowed;
    flex-shrink: 0;
}


/* ホバー時のツールチップ表示 */

.seiji-sns-icon--inactive::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) scale(0.9);
    background-color: #333333;
    color: #ffffff;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-family: var(--seiji-font-family);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all 0.25s ease;
    z-index: 10;
}

@media (hover: hover) {
    .seiji-sns-icon--inactive:hover {
        background-color: rgba(74, 144, 226, 0.1);
        color: var(--seiji-color-accent1);
    }
    .seiji-sns-icon--inactive:hover::after {
        opacity: 1;
        transform: translateX(-50%) scale(1);
    }
}

.seiji-sns-coming-soon__note {
    font-size: 0.875rem;
    color: var(--seiji-color-text-light);
    margin: 0;
    line-height: 1.6;
}


/* レスポンシブ対応 */

@media (max-width: 768px) {
    .seiji-sns-coming-soon {
        gap: 0.75rem;
    }
    .seiji-sns-icon {
        width: 2.75rem;
        height: 2.75rem;
    }
    .seiji-sns-icon svg {
        width: 18px;
        height: 18px;
    }
    .seiji-sns-coming-soon__note {
        font-size: 0.8125rem;
    }
}


/* ========================================
   📝 SNSアカウント有効化の手順
   ======================================== 
   
   SNSアカウントが準備できたら、以下の手順でリンクを有効化してください：

   1. footer.php内の各 .seiji-sns-icon の <div> を <a> タグに変更
   2. href属性を追加（例：href="https://instagram.com/seijitonari"）
   3. target="_blank" と rel="noopener noreferrer" を追加
   4. aria-label属性を更新（例：aria-label="Instagramをフォロー"）
   5. .seiji-sns-icon--inactive クラスを .seiji-sns-icon--active に変更

   例：
   <a href="https://instagram.com/seijitonari" 
      target="_blank" 
      rel="noopener noreferrer"
      class="seiji-sns-icon seiji-sns-icon--active" 
      aria-label="Instagramをフォロー"
      data-tooltip="Instagramをフォロー">
     <!-- SVGアイコン -->
   </a>

   有効化時のCSSを追加：
   ======================================== */


/* SNSアカウント有効時のスタイル（将来使用） */

.seiji-sns-icon--active {
    cursor: pointer;
    background-color: #E6E8EB;
}

@media (hover: hover) {
    .seiji-sns-icon--active:hover {
        background-color: var(--seiji-color-accent1);
        color: var(--seiji-color-white);
        transform: translateY(-2px);
    }
}

.seiji-sns-icon--active:focus-visible {
    outline: 2px solid var(--seiji-color-accent1);
    outline-offset: 2px;
}


/* ==========================================
   Instagram準備中セクション
   ========================================== */

.seiji-instagram--coming-soon {
    padding: 5rem 0;
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.03) 0%, rgba(165, 214, 167, 0.03) 100%);
}

.seiji-instagram--coming-soon .seiji-instagram__header {
    text-align: center;
    margin-bottom: 0;
}

.seiji-instagram__coming-soon-content {
    max-width: 600px;
    margin: 0 auto;
    padding: 4rem 2rem;
    background-color: var(--seiji-color-white);
    border-radius: var(--seiji-border-radius-card);
    box-shadow: var(--seiji-shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.seiji-instagram__coming-soon-icon {
    width: 7rem;
    height: 7rem;
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.1) 0%, rgba(165, 214, 167, 0.1) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--seiji-color-accent1);
    margin-bottom: 0.5rem;
}

.seiji-instagram__coming-soon-icon svg {
    width: 4rem;
    height: 4rem;
}

.seiji-instagram__coming-soon-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--seiji-color-text);
    margin: 0;
    line-height: 1.2;
}

.seiji-instagram__coming-soon-description {
    font-size: 1.125rem;
    color: var(--seiji-color-text-light);
    line-height: 1.8;
    margin: 0;
    text-align: center;
}

.seiji-instagram__coming-soon-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: rgba(74, 144, 226, 0.1);
    color: var(--seiji-color-accent1);
    border-radius: var(--seiji-border-radius-button);
    font-weight: 600;
    font-size: 1rem;
    margin: 0.5rem 0;
}

.seiji-instagram__coming-soon-badge svg {
    animation: rotate 2s linear infinite;
}

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

.seiji-instagram__coming-soon-note {
    font-size: 1rem;
    color: var(--seiji-color-text-light);
    line-height: 1.8;
    margin: 0;
    text-align: center;
}


/* レスポンシブ対応 */

@media (max-width: 768px) {
    .seiji-instagram--coming-soon {
        padding: 3rem 0;
    }
    .seiji-instagram__coming-soon-content {
        padding: 3rem 1.5rem;
        gap: 1.25rem;
    }
    .seiji-instagram__coming-soon-icon {
        width: 5.5rem;
        height: 5.5rem;
    }
    .seiji-instagram__coming-soon-icon svg {
        width: 3rem;
        height: 3rem;
    }
    .seiji-instagram__coming-soon-title {
        font-size: 2rem;
    }
    .seiji-instagram__coming-soon-description {
        font-size: 1rem;
    }
    .seiji-instagram__coming-soon-badge {
        padding: 0.625rem 1.25rem;
        font-size: 0.9375rem;
    }
    .seiji-instagram__coming-soon-note {
        font-size: 0.9375rem;
    }
}