/*
Theme Name: Go Team Mirai Theme
Author: けんいち
Description: チームみらい応援まとめサイト用テーマ
Version: 1.0.0
*/

/* ========================================
   CSS Variables - ブランドカラー設定（公式HPベース）
======================================== */
:root {
    /* Primary Colors - Mint Theme */
    --color-mint: #46C1B0;
    --color-mint-dark: #00A388;
    --color-mint-light: #7DD8CB;
    --color-mint-pale: #E8F8F5;
    --color-white: #ffffff;

    /* Secondary Colors */
    --color-navy: #2C3E50;
    --color-navy-dark: #1a252f;
    --color-gray-light: #f8fafa;
    --color-gray: #e8eeee;
    --color-gray-dark: #bdc3c7;
    --color-text: #2C3E50;
    --color-text-light: #5D6D7E;

    /* Accent Colors */
    --color-accent-orange: #E67E22;
    --color-accent-coral: #FF6B6B;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 40px;
    --spacing-xl: 56px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows - より柔らかく浮遊感のある影 */
    --shadow-sm: 0 2px 8px rgba(70, 193, 176, 0.08);
    --shadow-md: 0 4px 16px rgba(70, 193, 176, 0.12);
    --shadow-lg: 0 8px 32px rgba(70, 193, 176, 0.16);
    --shadow-float: 0 10px 40px rgba(0, 0, 0, 0.08);

    /* Font */
    --font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", "Meiryo", sans-serif;
}

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

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

body {
    font-family: var(--font-family);
    color: var(--color-text);
    background-color: var(--color-white);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--color-mint-dark);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--color-mint);
}

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

/* ========================================
   Header
======================================== */
.site-header {
    background: linear-gradient(135deg, var(--color-mint) 0%, var(--color-mint-dark) 100%);
    padding: var(--spacing-sm) var(--spacing-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(70, 193, 176, 0.3);
}

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

.site-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.site-logo-text {
    color: var(--color-white);
    font-size: 1.25rem;
    font-weight: bold;
}

.site-logo-badge {
    background-color: var(--color-accent-orange);
    color: var(--color-white);
    font-size: 0.625rem;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-weight: bold;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header-nav a {
    color: var(--color-white);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.header-nav a:hover {
    color: var(--color-mint-pale);
    opacity: 1;
}

.btn-support {
    background-color: var(--color-white);
    color: var(--color-mint-dark) !important;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-weight: bold;
    transition: all 0.3s ease;
}

.btn-support:hover {
    background-color: var(--color-mint-pale);
    color: var(--color-mint-dark) !important;
    transform: scale(1.02);
    opacity: 1;
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    width: 40px;
    height: 40px;
    position: relative;
    z-index: 1002;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-white);
    margin: 5px 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    transform-origin: center;
}

/* ハンバーガー → × アニメーション */
.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

    .header-nav {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(135deg, var(--color-mint) 0%, var(--color-mint-dark) 100%);
        flex-direction: column;
        padding: 100px var(--spacing-lg) var(--spacing-lg);
        gap: var(--spacing-md);
        z-index: 1001;
        overflow-y: auto;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }

    .header-nav.active {
        display: flex;
        opacity: 1;
        visibility: visible;
    }

    .header-nav a {
        font-size: 1.125rem;
        padding: var(--spacing-sm) 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.2);
        text-align: center;
    }

    .header-nav .btn-support {
        margin-top: var(--spacing-md);
        padding: var(--spacing-sm) var(--spacing-md);
        text-align: center;
    }

    /* モバイルメニュー用SNSアイコン */
    .mobile-sns-icons {
        display: flex;
        justify-content: center;
        gap: var(--spacing-md);
        margin-top: var(--spacing-lg);
        padding-top: var(--spacing-lg);
        border-top: 1px solid rgba(255, 255, 255, 0.2);
    }

    .mobile-sns-icon {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        background: rgba(255, 255, 255, 0.15);
        border-radius: 50%;
        transition: all 0.3s ease;
    }

    .mobile-sns-icon svg {
        width: 22px;
        height: 22px;
        fill: var(--color-white);
        transition: fill 0.3s ease;
    }

    .mobile-sns-icon:hover,
    .mobile-sns-icon:active {
        background: var(--color-white);
    }

    .mobile-sns-icon:hover svg,
    .mobile-sns-icon:active svg {
        fill: var(--color-mint);
    }
}

/* PCではモバイルSNSアイコンを非表示 */
@media (min-width: 769px) {
    .mobile-sns-icons {
        display: none;
    }
}

/* ========================================
   Hero Section
======================================== */
.hero {
    background: linear-gradient(135deg, var(--color-mint) 0%, var(--color-mint-light) 50%, #A8E6CF 100%);
    color: var(--color-white);
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(255,255,255,0.2) 0%, transparent 70%);
    pointer-events: none;
}

.hero-inner {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-accent {
    color: var(--color-white);
    background: linear-gradient(90deg, #fff 0%, var(--color-mint-pale) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-md);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.hero-notice {
    display: inline-block;
    background-color: rgba(255, 255, 255, 0.25);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    backdrop-filter: blur(4px);
}

@media (min-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
}

/* ========================================
   Manifest Section
======================================== */
.manifest-section {
    padding: var(--spacing-xl) var(--spacing-md);
    background: linear-gradient(180deg, var(--color-mint-pale) 0%, var(--color-white) 100%);
}

.section-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 1.75rem;
    color: var(--color-navy);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.section-title::after {
    content: "";
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--color-mint);
    margin: var(--spacing-sm) auto 0;
    border-radius: 2px;
}

/* ========================================
   Manifest Cards Grid
======================================== */
.manifest-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.manifest-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.manifest-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-mint), var(--color-navy));
}

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

.manifest-card-icon {
    width: 48px;
    height: 48px;
    background-color: var(--color-gray-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.manifest-card h3 {
    font-size: 1.125rem;
    color: var(--color-navy);
    margin-bottom: var(--spacing-xs);
}

.manifest-card p {
    font-size: 0.875rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.manifest-card-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--color-mint);
    font-weight: 500;
}

.manifest-card-link::after {
    content: "→";
    transition: transform 0.2s ease;
}

.manifest-card:hover .manifest-card-link::after {
    transform: translateX(4px);
}

/* ========================================
   Content Detail Section
======================================== */
.content-section {
    padding: var(--spacing-xl) var(--spacing-md);
}

.content-section h2 {
    font-size: 1.5rem;
    color: var(--color-navy);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-gray);
}

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

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

/* Video Section */
.video-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.video-item {
    background-color: var(--color-gray-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    display: flex;
    gap: var(--spacing-sm);
    transition: background-color 0.3s ease;
}

.video-item:hover {
    background-color: var(--color-gray);
}

.video-thumbnail {
    width: 120px;
    height: 68px;
    background-color: var(--color-navy);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
}

.video-info h4 {
    font-size: 0.875rem;
    color: var(--color-navy);
    margin-bottom: 4px;
}

.video-info p {
    font-size: 0.75rem;
    color: var(--color-text-light);
}

/* Article Section */
.article-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.article-item {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.article-item:hover {
    border-color: var(--color-mint);
    box-shadow: var(--shadow-sm);
}

.article-item h4 {
    font-size: 0.875rem;
    color: var(--color-navy);
    margin-bottom: 4px;
}

.article-item .article-source {
    font-size: 0.75rem;
    color: var(--color-text-light);
}

/* ========================================
   Footer
======================================== */
.site-footer {
    background: linear-gradient(135deg, var(--color-mint-dark) 0%, #00897B 100%);
    color: var(--color-white);
    padding: var(--spacing-lg) var(--spacing-md);
    text-align: center;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-title {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-mint-light);
}

.footer-note {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--spacing-sm);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.75rem;
}

.footer-links a:hover {
    color: var(--color-mint-light);
}

.footer-copyright {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ========================================
   Single Manifest Page
======================================== */
.single-manifest {
    padding: var(--spacing-xl) var(--spacing-md);
}

.single-manifest-inner {
    max-width: 900px;
    margin: 0 auto;
}

.manifest-header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-gray);
}

.manifest-header h1 {
    font-size: 2rem;
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
}

.manifest-description {
    font-size: 1.125rem;
    color: var(--color-text-light);
}

.related-content {
    margin-top: var(--spacing-lg);
}

.related-content h2 {
    font-size: 1.25rem;
    color: var(--color-navy);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.related-content h2::before {
    content: "";
    display: inline-block;
    width: 4px;
    height: 1.25rem;
    background-color: var(--color-mint);
    border-radius: 2px;
}

/* ========================================
   Utility Classes
======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.text-center {
    text-align: center;
}

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

/* ========================================
   Video Detail Styles
======================================== */
.video-item-detail {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.video-embed {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
}

.video-embed iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.video-item-detail .video-info h4 {
    font-size: 1.125rem;
    color: var(--color-navy);
    margin-bottom: var(--spacing-xs);
}

.video-duration {
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
}

.video-description {
    font-size: 0.875rem;
    color: var(--color-text);
    line-height: 1.6;
}

/* ========================================
   Article Detail Styles
======================================== */
.article-item-detail {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--color-white);
    border: 1px solid var(--color-gray);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
}

.article-item-detail:hover {
    border-color: var(--color-mint);
    box-shadow: var(--shadow-md);
}

.article-item-detail .article-info {
    flex: 1;
}

.article-item-detail h4 {
    font-size: 1rem;
    color: var(--color-navy);
    margin-bottom: var(--spacing-xs);
}

.article-meta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.article-meta .article-source {
    font-size: 0.75rem;
    color: var(--color-mint);
    font-weight: 500;
}

.article-meta .article-date {
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.article-excerpt {
    font-size: 0.875rem;
    color: var(--color-text-light);
    line-height: 1.5;
}

.article-link-icon {
    font-size: 1.25rem;
    color: var(--color-mint);
    margin-left: var(--spacing-sm);
    transition: transform 0.2s ease;
}

.article-item-detail:hover .article-link-icon {
    transform: translateX(4px);
}

/* ========================================
   No Content Message
======================================== */
.no-content {
    text-align: center;
    padding: var(--spacing-lg);
    background-color: var(--color-gray-light);
    border-radius: var(--radius-md);
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* ========================================
   Other Manifests Section
======================================== */
.other-manifests .manifest-card {
    text-decoration: none;
    display: block;
}

.other-manifests .manifest-card:hover {
    transform: translateY(-2px);
}

/* ========================================
   Manifest Card - 展開可能スタイル
======================================== */
.manifest-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease, max-height 0.4s ease;
}

.manifest-card-count {
    display: inline-block;
    background-color: var(--color-mint);
    color: var(--color-white);
    font-size: 0.625rem;
    padding: 2px 8px;
    border-radius: 10px;
    margin-top: var(--spacing-xs);
    font-weight: bold;
}

.manifest-videos {
    display: none;
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray);
}

.manifest-card.is-expanded {
    grid-column: 1 / -1;
    max-width: 100%;
}

.manifest-card.is-expanded .manifest-videos {
    display: block;
}

.manifest-card.is-expanded .manifest-card-link::after {
    content: "↑";
    transform: none;
}

.manifest-videos-inner {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.manifest-videos-title {
    font-size: 0.875rem;
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
    font-weight: bold;
}

.manifest-videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-sm);
}

.manifest-video-card {
    display: block;
    text-decoration: none;
    background-color: var(--color-gray-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.manifest-video-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.manifest-video-thumb {
    position: relative;
    aspect-ratio: 16 / 9;
    background-color: var(--color-navy);
    overflow: hidden;
}

.manifest-video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.manifest-video-card:hover .manifest-video-thumb img {
    transform: scale(1.05);
}

.manifest-video-thumb-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-navy);
    color: var(--color-white);
    font-size: 2rem;
}

.manifest-video-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 48px;
    height: 48px;
    background-color: rgba(0, 160, 233, 0.9);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.manifest-video-card:hover .manifest-video-play {
    opacity: 1;
}

.manifest-video-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background-color: rgba(0, 0, 0, 0.8);
    color: var(--color-white);
    font-size: 0.625rem;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-weight: bold;
}

.manifest-video-info {
    padding: var(--spacing-xs) var(--spacing-sm);
}

.manifest-video-info h5 {
    font-size: 0.75rem;
    color: var(--color-navy);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin: 0;
}

.manifest-videos-more {
    display: inline-block;
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--color-mint);
    font-weight: 500;
}

.manifest-videos-more:hover {
    text-decoration: underline;
}

.manifest-videos-empty {
    text-align: center;
    color: var(--color-text-light);
    font-size: 0.875rem;
    padding: var(--spacing-md) 0;
}

/* ========================================
   Latest Videos Section
======================================== */
.latest-videos-section {
    padding: var(--spacing-xl) var(--spacing-md);
    background-color: var(--color-white);
}

.latest-videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.latest-video-card {
    display: block;
    text-decoration: none;
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-float);
    transition: all 0.3s ease;
    border: 1px solid rgba(70, 193, 176, 0.1);
}

.latest-video-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(70, 193, 176, 0.15);
    border-color: var(--color-mint-light);
}

.latest-video-thumb {
    position: relative;
    aspect-ratio: 16 / 9;
    background-color: var(--color-navy);
    overflow: hidden;
}

.latest-video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.latest-video-card:hover .latest-video-thumb img {
    transform: scale(1.05);
}

.latest-video-thumb-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-dark) 100%);
    color: var(--color-white);
    font-size: 3rem;
}

.latest-video-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 64px;
    height: 64px;
    background-color: rgba(0, 160, 233, 0.9);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

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

.latest-video-duration {
    position: absolute;
    bottom: 12px;
    right: 12px;
    background-color: rgba(0, 0, 0, 0.85);
    color: var(--color-white);
    font-size: 0.75rem;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-weight: bold;
}

.latest-video-info {
    padding: var(--spacing-md);
}

.latest-video-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: var(--spacing-xs);
}

.latest-video-category {
    background-color: var(--color-gray-light);
    color: var(--color-mint);
    font-size: 0.625rem;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 600;
}

.latest-video-info h3 {
    font-size: 1rem;
    color: var(--color-navy);
    line-height: 1.5;
    margin-bottom: var(--spacing-xs);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.latest-video-date {
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.no-videos-message {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-xl);
    background-color: var(--color-gray-light);
    border-radius: var(--radius-lg);
}

.no-videos-message p {
    color: var(--color-text-light);
    font-size: 0.875rem;
    line-height: 1.8;
}

/* ========================================
   Video Card Horizontal (AI要約付き)
======================================== */
.latest-videos-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.video-card-horizontal {
    display: flex;
    gap: var(--spacing-md);
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.3s ease;
}

.video-card-horizontal:hover {
    box-shadow: var(--shadow-lg);
}

.video-card-thumb {
    position: relative;
    flex-shrink: 0;
    width: 320px;
    aspect-ratio: 16 / 9;
    background-color: var(--color-navy);
    overflow: hidden;
}

.video-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.video-card-thumb:hover img {
    transform: scale(1.05);
}

.video-thumb-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-dark) 100%);
    color: var(--color-white);
    font-size: 3rem;
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 56px;
    height: 56px;
    background-color: rgba(0, 160, 233, 0.9);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

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

.video-duration-badge {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background-color: rgba(0, 0, 0, 0.85);
    color: var(--color-white);
    font-size: 0.75rem;
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    font-weight: bold;
}

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

.video-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.video-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.video-category-tag {
    background: linear-gradient(135deg, var(--color-mint) 0%, #0077b6 100%);
    color: var(--color-white);
    font-size: 0.625rem;
    padding: 3px 10px;
    border-radius: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.video-date {
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.video-title {
    font-size: 1.125rem;
    line-height: 1.5;
    margin: 0 0 var(--spacing-sm);
}

.video-title a {
    color: var(--color-navy);
    text-decoration: none;
    transition: color 0.2s ease;
}

.video-title a:hover {
    color: var(--color-mint);
}

/* AI要約スタイル */
/* 動画要約（シンプル版） */
.video-summary {
    margin-top: auto;
    padding-top: var(--spacing-xs);
}

.video-summary .summary-text {
    font-size: 0.8125rem;
    color: var(--color-text-light);
    line-height: 1.5;
    margin: 0;
}

/* 旧AI要約スタイル（互換性維持） */
.video-ai-summary {
    position: relative;
    background: linear-gradient(135deg, #f0f7ff 0%, #e8f4fd 100%);
    border-left: 3px solid var(--color-mint);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: var(--spacing-sm) var(--spacing-md);
    margin-top: auto;
}

.ai-summary-text {
    font-size: 0.875rem;
    color: var(--color-text);
    line-height: 1.6;
    margin: 0 0 var(--spacing-xs);
}

.ai-summary-points {
    margin: 0;
    padding-left: var(--spacing-md);
    list-style: none;
}

.ai-summary-points li {
    position: relative;
    font-size: 0.8125rem;
    color: var(--color-text-light);
    line-height: 1.5;
    margin-bottom: 4px;
}

.ai-summary-points li::before {
    content: "•";
    position: absolute;
    left: -12px;
    color: var(--color-mint);
    font-weight: bold;
}

.ai-badge {
    position: absolute;
    top: -8px;
    right: var(--spacing-sm);
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: var(--color-white);
    font-size: 0.5625rem;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 4px rgba(99, 102, 241, 0.3);
}

/* ========================================
   Responsive Adjustments
======================================== */
@media (max-width: 768px) {
    .manifest-videos-grid {
        grid-template-columns: 1fr;
    }

    .latest-videos-grid {
        grid-template-columns: 1fr;
    }

    .manifest-card.is-expanded {
        grid-column: 1;
    }

    .video-card-horizontal {
        flex-direction: column;
        align-items: center;
    }

    .video-card-thumb {
        width: 100%;
        max-width: 100%;
        margin: 0 auto;
    }

    .video-card-content {
        width: 100%;
        text-align: left;
    }

    .video-card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }

    /* 動画リストの中央揃え */
    .latest-videos-list {
        display: flex;
        flex-direction: column;
        align-items: center;
        width: 100%;
    }

    .latest-videos-list .video-card-horizontal {
        width: 100%;
        max-width: 100%;
    }

    /* 動画埋め込みの中央揃え */
    .video-embed {
        width: 100%;
        margin: 0 auto;
    }

    .video-item-detail {
        width: 100%;
        margin-left: auto;
        margin-right: auto;
    }
}

/* ========================================
   Hero Section Enhancements
======================================== */
.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-top: var(--spacing-md);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.15);
    color: var(--color-white);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    backdrop-filter: blur(4px);
}

.hero-badge svg {
    flex-shrink: 0;
}

.sp-only {
    display: none;
}

@media (max-width: 768px) {
    .sp-only {
        display: block;
    }
}

/* Header X Link */
.header-x-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* ========================================
   Accordion Styles
======================================== */
.manifest-accordion {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 900px;
    margin: 0 auto;
}

.accordion-item {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-float);
    overflow: hidden;
    border: 1px solid rgba(70, 193, 176, 0.15);
    border-left: 4px solid var(--color-mint);
    transition: all 0.3s ease;
}

.accordion-item:hover {
    box-shadow: 0 12px 32px rgba(70, 193, 176, 0.12);
    border-left-color: var(--color-mint-dark);
}

.accordion-item.is-open {
    box-shadow: 0 16px 48px rgba(70, 193, 176, 0.18);
    border-color: var(--color-mint);
    border-left-width: 4px;
}

.accordion-header {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
    transition: background-color 0.2s ease;
}

.accordion-header:hover {
    background-color: var(--color-mint-pale);
}

.accordion-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-mint), var(--color-navy));
    border-radius: 12px;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.accordion-title-wrap {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.accordion-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-navy);
    margin: 0;
}

.accordion-count {
    background: var(--color-mint);
    color: var(--color-white);
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 50px;
    font-weight: 600;
}

.accordion-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: var(--color-text-light);
    transition: transform 0.3s ease;
}

.accordion-item.is-open .accordion-arrow {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
}

/* アコーディオン展開時は高さ制限を解除 */
.accordion-item.is-open .accordion-content {
    overflow: visible;
}

.accordion-body {
    padding: 0 var(--spacing-md) var(--spacing-md);
}

.accordion-summary {
    color: var(--color-text);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

/* 概要が展開された時は非表示 */
.accordion-details-wrap.is-expanded + .accordion-summary,
.accordion-details-wrap.is-expanded .accordion-summary-text {
    display: none;
}

.accordion-details-wrap {
    margin-bottom: var(--spacing-md);
}

.accordion-read-more {
    background: none;
    border: none;
    color: var(--color-mint);
    font-size: 0.875rem;
    cursor: pointer;
    padding: 0;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.accordion-read-more:hover {
    text-decoration: underline;
}

.accordion-read-more::after {
    content: '▼';
    font-size: 0.7em;
    transition: transform 0.3s ease;
}

.accordion-details-wrap.is-expanded .accordion-read-more::after {
    transform: rotate(180deg);
}

.accordion-details {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.4s ease-out, opacity 0.3s ease-out;
}

/* 詳細展開時：高さ制限を完全解除 */
.accordion-details-wrap.is-expanded .accordion-details {
    max-height: none !important;
    overflow: visible;
    opacity: 1;
    margin-top: var(--spacing-sm);
}

/* 詳細コンテンツが長い場合のスクロール対応 */
.accordion-details-scrollable {
    max-height: 500px;
    overflow-y: auto;
    padding-right: var(--spacing-sm);
}

/* ミントグリーンのカスタムスクロールバー */
.accordion-details-scrollable::-webkit-scrollbar {
    width: 8px;
}

.accordion-details-scrollable::-webkit-scrollbar-track {
    background: var(--color-mint-pale, #E8F8F5);
    border-radius: 4px;
}

.accordion-details-scrollable::-webkit-scrollbar-thumb {
    background: var(--color-mint, #46C1B0);
    border-radius: 4px;
}

.accordion-details-scrollable::-webkit-scrollbar-thumb:hover {
    background: var(--color-mint-dark, #00A388);
}

/* Firefox用スクロールバー */
.accordion-details-scrollable {
    scrollbar-width: thin;
    scrollbar-color: var(--color-mint, #46C1B0) var(--color-mint-pale, #E8F8F5);
}

.accordion-details p {
    color: var(--color-text-light);
    font-size: 0.9375rem;
    line-height: 1.8;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* Accordion Videos */
.accordion-videos {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray);
}

.accordion-videos h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
}

.accordion-videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-sm);
}

.accordion-video-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
    text-decoration: none;
    color: inherit;
    transition: opacity 0.2s ease;
}

.accordion-video-item:hover {
    opacity: 0.85;
}

.accordion-video-thumb {
    position: relative;
    aspect-ratio: 16/9;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--color-gray-light);
}

.accordion-video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.accordion-video-thumb .play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 36px;
    height: 36px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}

.accordion-video-info h5 {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text);
    margin: 0;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ai-excerpt {
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin: 4px 0 0;
    line-height: 1.4;
}

/* ========================================
   News Section
======================================== */
.news-section {
    background: var(--color-gray-light);
    padding: var(--spacing-xl) var(--spacing-md);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.news-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-float);
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: all 0.3s ease;
    border: 1px solid rgba(70, 193, 176, 0.1);
}

.news-card:hover {
    box-shadow: 0 16px 48px rgba(70, 193, 176, 0.15);
    transform: translateY(-4px);
    border-color: var(--color-mint-light);
}

.news-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.75rem;
}

.news-source {
    background: var(--color-navy);
    color: var(--color-white);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.news-date {
    color: var(--color-text-light);
}

.news-title {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.5;
    margin: 0;
}

.news-title a {
    color: var(--color-navy);
    text-decoration: none;
}

.news-title a:hover {
    color: var(--color-mint);
}

.news-summary {
    font-size: 0.875rem;
    color: var(--color-text-light);
    line-height: 1.6;
    margin: 0;
    flex: 1;
}

.ai-label {
    display: inline-block;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: var(--color-white);
    font-size: 0.625rem;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    letter-spacing: 0.5px;
}

.news-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-mint);
    align-self: flex-start;
}

.no-content-message {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--color-text-light);
}

/* ========================================
   Latest Videos Section
======================================== */
.latest-videos-section {
    padding: var(--spacing-xl) var(--spacing-md);
}

.latest-videos-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(500px, 1fr));
    gap: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .latest-videos-list {
        grid-template-columns: 1fr;
    }
}

.video-card-horizontal {
    display: flex;
    gap: var(--spacing-md);
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.3s ease;
}

.video-card-horizontal:hover {
    box-shadow: var(--shadow-md);
}

.video-card-horizontal .video-card-thumb {
    width: 200px;
    flex-shrink: 0;
    position: relative;
    border-radius: var(--radius-sm);
    overflow: hidden;
    aspect-ratio: 16/9;
}

.video-card-horizontal .video-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 44px;
    height: 44px;
    background: rgba(0, 0, 0, 0.75);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: transform 0.2s ease;
}

.video-card-horizontal:hover .video-play-btn {
    transform: translate(-50%, -50%) scale(1.1);
}

.video-duration-badge {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    font-size: 0.75rem;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

.video-card-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.video-card-horizontal .video-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
}

.video-categories {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.video-category-tag {
    background: var(--color-gray-light);
    color: var(--color-navy);
    font-size: 0.6875rem;
    padding: 2px 8px;
    border-radius: 50px;
    font-weight: 500;
}

.video-date {
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.video-title {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.4;
    margin: 0;
}

.video-title a {
    color: var(--color-navy);
    text-decoration: none;
}

.video-title a:hover {
    color: var(--color-mint);
}

.video-ai-summary {
    flex: 1;
    position: relative;
}

.ai-summary-text {
    font-size: 0.875rem;
    color: var(--color-text);
    line-height: 1.6;
    margin: 0 0 8px;
}

.ai-summary-points {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.8125rem;
    color: var(--color-text-light);
}

.ai-summary-points li {
    position: relative;
    padding-left: 16px;
    margin-bottom: 4px;
}

.ai-summary-points li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-mint);
    font-weight: bold;
}

.ai-badge {
    display: inline-block;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: var(--color-white);
    font-size: 0.625rem;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    margin-top: 8px;
}

.no-videos-message {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--color-text-light);
}

/* ========================================
   Twitter Section
======================================== */
.twitter-section {
    background: var(--color-white);
    padding: var(--spacing-xl) var(--spacing-md);
}

.twitter-feeds {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    max-width: 1000px;
    margin: 0 auto;
}

.twitter-feed {
    background: var(--color-gray-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    min-height: 400px;
}

/* ========================================
   Footer Enhancements
======================================== */
.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--color-white);
}

.footer-badge {
    background: var(--color-accent-orange);
    color: var(--color-white);
    font-size: 0.6875rem;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

@media (max-width: 768px) {
    .accordion-icon {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }

    .accordion-title {
        font-size: 1rem;
    }

    .accordion-videos-grid {
        grid-template-columns: 1fr;
    }

    .news-grid {
        grid-template-columns: 1fr;
    }

    .hero-badges {
        flex-direction: column;
        align-items: center;
    }
}

/* ========================================
   News Content Wrapper (with X sidebar)
======================================== */
.news-content-wrapper {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--spacing-lg);
    max-width: 1400px;
    margin: 0 auto;
}

@media (max-width: 1024px) {
    .news-content-wrapper {
        grid-template-columns: 1fr;
    }
}

.news-main {
    min-width: 0;
}

.news-sidebar {
    min-width: 0;
}

/* X Feed Widget */
.x-feed-widget {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 100px;
}

.x-feed-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-navy);
    margin: 0 0 var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-gray);
}

/* X公式埋め込みタイムライン - 右サイドバーレイアウト */
.news-content-wrapper {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--spacing-lg);
    max-width: 1400px;
    margin: 0 auto;
}

.news-content-wrapper .news-main {
    min-width: 0;
}

.x-sidebar {
    width: 100%;
}

.x-sidebar .x-feed-widget {
    position: sticky;
    top: 100px;
    background: var(--color-white);
    border: 2px solid var(--color-mint);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-float);
}

.x-sidebar .x-feed-title {
    border-bottom-color: var(--color-mint);
}

/* X タイムラインアイテム */
.x-timeline-item {
    margin-bottom: var(--spacing-md);
    border: 1px solid rgba(70, 193, 176, 0.2);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-white);
}

.x-timeline-item:last-of-type {
    margin-bottom: 0;
}

.x-timeline-account-header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background: linear-gradient(135deg, var(--color-mint) 0%, var(--color-mint-dark) 100%);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 600;
}

.x-timeline-embed {
    min-height: 300px;
    background: var(--color-white);
    overflow: hidden;
}

/* 読み込み中プレースホルダー */
.x-loading-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 280px;
    color: var(--color-text-light);
    font-size: 0.8125rem;
    background: var(--color-gray-light);
}

/* Twitter埋め込みiframeのスタイル調整 */
.x-timeline-embed .twitter-timeline {
    display: block !important;
}

.x-timeline-embed iframe {
    border: none !important;
    width: 100% !important;
}

/* フォローボタン */
.x-sidebar-footer {
    margin-top: var(--spacing-md);
    text-align: center;
}

.x-follow-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--color-mint);
    color: var(--color-white);
    border-radius: 50px;
    font-size: 0.8125rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    width: 100%;
    justify-content: center;
}

.x-follow-btn:hover {
    background: var(--color-mint-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Mobile responsive for X sidebar */
@media (max-width: 1024px) {
    .news-content-wrapper {
        grid-template-columns: 1fr;
    }

    .x-sidebar .x-feed-widget {
        position: static;
    }

    .x-sidebar {
        margin-top: var(--spacing-lg);
    }

    /* タブレット：2カラム表示 */
    .x-timeline-items-wrapper {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    /* モバイル：1カラム表示 */
    .x-timeline-items-wrapper {
        grid-template-columns: 1fr;
    }

    .x-timeline-embed {
        min-height: 250px;
    }
}

/* ========================================
   Admin Profile Section
======================================== */
.admin-profile-section {
    padding: var(--spacing-xl) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-mint-pale) 0%, #E0F7F4 50%, var(--color-white) 100%);
}

.admin-profile-card {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-float);
    border: 2px solid var(--color-mint);
}

.admin-profile-image {
    flex-shrink: 0;
}

.admin-profile-image img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--color-mint);
    box-shadow: 0 4px 16px rgba(70, 193, 176, 0.3);
}

.admin-profile-placeholder {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-mint) 0%, var(--color-mint-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
}

.admin-profile-content {
    flex: 1;
}

.admin-profile-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-navy);
    margin: 0 0 var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.admin-profile-username {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-text-light);
}

.admin-profile-bio {
    font-size: 0.9375rem;
    line-height: 1.8;
    color: var(--color-text);
    margin: 0 0 var(--spacing-md);
}

.admin-profile-x-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background: var(--color-navy);
    color: var(--color-white);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
}

.admin-profile-x-link:hover {
    background: #1a252f;
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

@media (max-width: 768px) {
    .admin-profile-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: var(--spacing-md);
    }

    .admin-profile-name {
        justify-content: center;
    }

    .admin-profile-image img,
    .admin-profile-placeholder {
        width: 100px;
        height: 100px;
    }
}

/* ========================================
   Footer Disclaimer
======================================== */
.footer-disclaimer {
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.footer-disclaimer p {
    margin: 0;
    font-size: 0.8125rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.9);
}

.footer-disclaimer a {
    color: var(--color-mint-light);
    text-decoration: underline;
}

.footer-disclaimer strong {
    display: block;
    margin-top: 8px;
    color: #ffd700;
}

/* ========================================
   Accordion More Link
======================================== */
.accordion-more-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-mint);
}

.accordion-more-link:hover {
    text-decoration: underline;
}

/* ========================================
   Archive Link Wrapper
======================================== */
.archive-link-wrapper {
    text-align: center;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray);
}

.archive-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--color-white);
    border: 2px solid var(--color-mint);
    border-radius: 50px;
    color: var(--color-mint-dark);
    font-weight: 600;
    font-size: 0.9375rem;
    text-decoration: none;
    transition: all 0.2s ease;
}

.archive-link:hover {
    background: var(--color-mint);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ========================================
   Archive Page Styles
======================================== */
.archive-hero {
    background: linear-gradient(135deg, var(--color-mint) 0%, var(--color-mint-light) 100%);
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    color: var(--color-white);
}

.archive-title {
    font-size: 2rem;
    font-weight: 700;
    margin: 0 0 var(--spacing-xs);
}

.archive-description {
    font-size: 1rem;
    opacity: 0.9;
    margin: 0 0 var(--spacing-md);
}

.back-to-home {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--color-white);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.2s ease;
}

.back-to-home:hover {
    opacity: 1;
    color: var(--color-white);
}

.archive-main {
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--color-gray-light);
    min-height: 60vh;
}

/* Archive Accordion */
.archive-accordion {
    max-width: 1000px;
    margin: 0 auto;
}

.archive-month-group {
    margin-bottom: var(--spacing-md);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-float);
    overflow: hidden;
    border-left: 4px solid var(--color-mint);
}

.archive-month-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    transition: background-color 0.2s ease;
}

.archive-month-header:hover {
    background-color: var(--color-mint-pale);
}

.archive-month-header .month-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-navy);
}

.archive-month-header .article-count {
    font-size: 0.8125rem;
    color: var(--color-text-light);
    margin-left: auto;
    margin-right: var(--spacing-sm);
}

.archive-month-header .arrow-icon {
    color: var(--color-text-light);
    transition: transform 0.3s ease;
}

.archive-month-group.is-open .arrow-icon {
    transform: rotate(180deg);
}

.archive-month-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
}

/* Archive Articles List */
.archive-articles-list {
    padding: 0 var(--spacing-md) var(--spacing-md);
}

.archive-article-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    background: var(--color-gray-light);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
}

.archive-article-item:hover {
    background: var(--color-mint-pale);
    transform: translateX(4px);
}

.archive-article-item .article-content {
    flex: 1;
    min-width: 0;
}

.archive-article-item .article-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-navy);
    margin: 0 0 4px;
    line-height: 1.4;
}

.archive-article-item .article-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.archive-article-item .article-source {
    background: var(--color-mint-pale);
    color: var(--color-mint-dark);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.archive-article-item .article-summary {
    font-size: 0.8125rem;
    color: var(--color-text-light);
    margin: 6px 0 0;
    line-height: 1.5;
}

.archive-article-item .article-arrow {
    flex-shrink: 0;
    color: var(--color-mint);
    margin-left: var(--spacing-sm);
}

/* Archive Videos Grid */
.archive-videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
    padding: 0 var(--spacing-md) var(--spacing-md);
}

.archive-video-card {
    background: var(--color-gray-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.2s ease;
}

.archive-video-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.archive-video-card .video-thumb {
    position: relative;
    display: block;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.archive-video-card .video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.archive-video-card .video-thumb-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background: var(--color-navy);
    color: var(--color-white);
    font-size: 2rem;
}

.archive-video-card .play-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 48px;
    height: 48px;
    background: rgba(70, 193, 176, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 1rem;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.archive-video-card:hover .play-overlay {
    opacity: 1;
}

.archive-video-card .video-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.8);
    color: var(--color-white);
    font-size: 0.75rem;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

.archive-video-card .video-info {
    padding: var(--spacing-sm);
}

.archive-video-card .video-title {
    font-size: 0.9375rem;
    font-weight: 600;
    margin: 0 0 6px;
    line-height: 1.4;
}

.archive-video-card .video-title a {
    color: var(--color-navy);
    text-decoration: none;
}

.archive-video-card .video-title a:hover {
    color: var(--color-mint-dark);
}

.archive-video-card .video-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin-bottom: 6px;
}

.archive-video-card .video-category {
    background: var(--color-mint-pale);
    color: var(--color-mint-dark);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.archive-video-card .video-ai-summary {
    font-size: 0.75rem;
    color: var(--color-text-light);
    line-height: 1.5;
    padding-top: 6px;
    border-top: 1px solid var(--color-gray);
    display: flex;
    align-items: flex-start;
    gap: 6px;
}

.archive-video-card .video-ai-summary p {
    margin: 0;
    flex: 1;
}

.archive-video-card .video-ai-summary .ai-badge {
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--color-mint), var(--color-mint-dark));
    color: var(--color-white);
    font-size: 0.625rem;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

@media (max-width: 768px) {
    .archive-videos-grid {
        grid-template-columns: 1fr;
    }

    .archive-article-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .archive-article-item .article-arrow {
        margin-left: 0;
        margin-top: var(--spacing-xs);
        align-self: flex-end;
    }
}

/* ========================================
   Manifest Cards Grid (2カラムレイアウト)
======================================== */
.manifest-cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    max-width: 1000px;
    margin: 0 auto;
}

.manifest-grid-card {
    display: block;
    text-decoration: none;
    color: inherit;
    background: var(--color-white);
    border: 2px solid var(--color-mint);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
}

.manifest-grid-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-mint), var(--color-mint-dark));
}

.manifest-grid-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(70, 193, 176, 0.25);
    border-color: var(--color-mint-dark);
    background: var(--color-mint-pale);
}

.manifest-grid-card-inner {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
}

.manifest-grid-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-mint) 0%, var(--color-mint-dark) 100%);
    border-radius: var(--radius-md);
    font-size: 1.75rem;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(70, 193, 176, 0.3);
}

.manifest-grid-content {
    flex: 1;
    min-width: 0;
}

.manifest-grid-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-navy);
    margin: 0 0 var(--spacing-xs);
    line-height: 1.4;
}

.manifest-grid-summary {
    font-size: 0.875rem;
    color: var(--color-text-light);
    line-height: 1.6;
    margin: 0 0 var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.manifest-grid-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.manifest-grid-count {
    font-size: 0.75rem;
    color: var(--color-mint-dark);
    font-weight: 600;
    background: var(--color-mint-pale);
    padding: 4px 10px;
    border-radius: 50px;
}

.manifest-grid-arrow {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-mint);
    transition: transform 0.2s ease;
}

.manifest-grid-card:hover .manifest-grid-arrow {
    transform: translateX(4px);
    color: var(--color-mint-dark);
}

/* タブレット（2カラム維持） */
@media (max-width: 900px) {
    .manifest-cards-grid {
        gap: var(--spacing-sm);
    }

    .manifest-grid-card-inner {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: var(--spacing-sm);
    }

    .manifest-grid-icon {
        width: 48px;
        height: 48px;
        font-size: 1.5rem;
    }

    .manifest-grid-footer {
        justify-content: center;
    }
}

/* スマホ（1カラム） */
@media (max-width: 600px) {
    .manifest-cards-grid {
        grid-template-columns: 1fr;
    }

    .manifest-grid-card-inner {
        flex-direction: row;
        align-items: flex-start;
        text-align: left;
    }

    .manifest-grid-footer {
        justify-content: space-between;
    }
}

/* ========================================
   Bottom Tab Navigation（モバイル専用）
======================================== */
.bottom-tab-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-top: 1px solid var(--color-gray);
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 8px 0;
    padding-bottom: max(8px, env(safe-area-inset-bottom));
}

@media (max-width: 768px) {
    .bottom-tab-nav {
        display: flex;
        justify-content: space-around;
        align-items: center;
    }

    /* フッターの下部にパディングを追加（ボトムナビに隠れないように） */
    .site-footer {
        padding-bottom: calc(var(--spacing-lg) + 80px);
    }
}

.bottom-tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 8px 16px;
    text-decoration: none;
    color: var(--color-text-light);
    transition: all 0.2s ease;
    border-radius: var(--radius-md);
    min-width: 80px;
}

.bottom-tab-item:hover,
.bottom-tab-item:active {
    color: var(--color-mint);
    background: var(--color-mint-pale);
}

.bottom-tab-item.is-active {
    color: var(--color-mint-dark);
    background: var(--color-mint-pale);
}

.bottom-tab-item.is-active .bottom-tab-icon {
    stroke: var(--color-mint-dark);
    fill: var(--color-mint-pale);
}

.bottom-tab-icon {
    width: 24px;
    height: 24px;
    stroke: currentColor;
    fill: none;
    transition: all 0.2s ease;
}

.bottom-tab-label {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

/* ========================================
   タイポグラフィ最適化（レスポンシブ）
======================================== */
/* clamp()を使用したフォントサイズの自動調整 */
.hero h1 {
    font-size: clamp(1.5rem, 5vw, 2.5rem);
    word-break: keep-all;
    overflow-wrap: anywhere;
}

.hero p,
.hero-lead {
    font-size: clamp(0.875rem, 2.5vw, 1rem);
    word-break: keep-all;
    overflow-wrap: anywhere;
}

.section-title {
    font-size: clamp(1.25rem, 4vw, 1.75rem);
    word-break: keep-all;
    overflow-wrap: anywhere;
}

.section-subtitle {
    font-size: clamp(0.8125rem, 2vw, 0.9375rem);
    color: var(--color-text-light);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    word-break: keep-all;
    overflow-wrap: anywhere;
}

/* 日本語テキストの改行最適化 */
.news-title,
.video-title,
.manifest-grid-title,
.accordion-title,
.admin-profile-name {
    word-break: keep-all;
    overflow-wrap: anywhere;
    line-height: 1.5;
}

/* モバイル特有のタイポグラフィ調整 */
@media (max-width: 768px) {
    /* ヒーローセクション */
    .hero {
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .hero h1 {
        font-size: clamp(1.375rem, 6vw, 1.75rem);
        line-height: 1.35;
    }

    .hero-lead {
        font-size: 0.9375rem;
        line-height: 1.7;
    }

    .hero-badges {
        gap: 8px;
    }

    .hero-badge {
        font-size: 0.75rem;
        padding: 6px 12px;
    }

    /* セクションタイトル */
    .section-title {
        font-size: 1.375rem;
        margin-bottom: var(--spacing-md);
    }

    .section-subtitle {
        font-size: 0.8125rem;
        margin-bottom: var(--spacing-md);
    }

    /* ニュースカード */
    .news-title {
        font-size: 0.9375rem;
    }

    /* 動画タイトル */
    .video-title {
        font-size: 1rem;
    }

    /* マニフェストカード */
    .manifest-grid-title {
        font-size: 1rem;
    }

    .manifest-grid-summary {
        font-size: 0.8125rem;
        -webkit-line-clamp: 3;
    }

    /* 管理人プロフィール */
    .admin-profile-name {
        font-size: 1.25rem;
    }

    .admin-profile-bio {
        font-size: 0.875rem;
    }

    /* スマホでの改行を許可（brタグ表示） */
    .sp-only {
        display: inline;
    }
}

/* 超小型デバイス（320px以下） */
@media (max-width: 320px) {
    .hero h1 {
        font-size: 1.25rem;
    }

    .section-title {
        font-size: 1.125rem;
    }

    .bottom-tab-label {
        font-size: 0.625rem;
    }
}

/* ========================================
   News List Compact（コンパクトリスト形式）
======================================== */
.news-list-compact {
    display: flex;
    flex-direction: column;
    gap: 2px;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-float);
}

.news-item-compact {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 12px var(--spacing-md);
    text-decoration: none;
    color: inherit;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-gray);
    transition: all 0.15s ease;
}

.news-item-compact:last-child {
    border-bottom: none;
}

.news-item-compact:hover {
    background: var(--color-mint-pale);
}

.news-item-compact:hover .news-item-title {
    color: var(--color-mint-dark);
}

.news-item-compact:hover .news-item-arrow {
    transform: translateX(4px);
    color: var(--color-mint-dark);
}

.news-item-date {
    flex-shrink: 0;
    width: 40px;
    font-size: 0.75rem;
    color: var(--color-text-light);
    font-weight: 500;
}

.news-item-source {
    flex-shrink: 0;
    min-width: 80px;
    max-width: 100px;
    font-size: 0.6875rem;
    color: var(--color-white);
    background: var(--color-navy);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.news-item-title {
    flex: 1;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-navy);
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 0.15s ease;
}

.news-item-arrow {
    flex-shrink: 0;
    color: var(--color-mint);
    font-weight: 600;
    transition: transform 0.15s ease, color 0.15s ease;
}

/* レスポンシブ：タブレット */
@media (max-width: 1024px) {
    .news-item-source {
        min-width: 70px;
        max-width: 80px;
    }
}

/* レスポンシブ：スマホ */
@media (max-width: 768px) {
    .news-item-compact {
        padding: 10px var(--spacing-sm);
        gap: var(--spacing-xs);
    }

    .news-item-date {
        width: 35px;
        font-size: 0.6875rem;
    }

    .news-item-source {
        min-width: 60px;
        max-width: 70px;
        font-size: 0.625rem;
        padding: 2px 6px;
    }

    .news-item-title {
        font-size: 0.8125rem;
    }
}

/* 超小型デバイス */
@media (max-width: 480px) {
    .news-item-compact {
        flex-wrap: wrap;
    }

    .news-item-title {
        order: 3;
        flex-basis: 100%;
        white-space: normal;
        margin-top: 4px;
    }

    .news-item-arrow {
        order: 2;
        margin-left: auto;
    }
}

.news-list-compact .no-content-message {
    padding: var(--spacing-lg);
    text-align: center;
}

/* ========================================
   X Profile Cards（プロフィールカード形式）
======================================== */
.x-profile-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    background: var(--color-white);
    border: 2px solid var(--color-gray);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.x-profile-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--card-accent, var(--color-mint));
}

.x-profile-card:hover {
    border-color: var(--card-accent, var(--color-mint));
    background: var(--color-mint-pale);
    transform: translateX(4px);
}

.x-profile-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--card-accent, var(--color-navy));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--color-white);
}

.x-profile-info {
    flex: 1;
    min-width: 0;
}

.x-profile-name {
    display: block;
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--color-navy);
    line-height: 1.3;
}

.x-profile-handle {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin-bottom: 4px;
}

.x-profile-desc {
    font-size: 0.75rem;
    color: var(--color-text-light);
    line-height: 1.4;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.x-profile-follow-icon {
    flex-shrink: 0;
    color: var(--color-mint);
    transition: transform 0.2s ease;
}

.x-profile-card:hover .x-profile-follow-icon {
    transform: translateX(4px);
    color: var(--card-accent, var(--color-mint-dark));
}

.x-sidebar-note {
    font-size: 0.75rem;
    color: var(--color-text-light);
    text-align: center;
    margin: 0;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-gray);
}

/* ========================================
   SNS Widget Styles（コンパクトアイコン版）
======================================== */
.sns-sidebar {
    width: 100%;
}

.sns-widget {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray);
    position: sticky;
    top: 100px;
}

.sns-widget-title {
    font-size: 1rem;
    color: var(--color-navy);
    margin-bottom: var(--spacing-md);
    text-align: center;
    font-weight: 600;
}

.sns-icons-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.sns-icon-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-gray-light);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.sns-icon-link svg {
    width: 24px;
    height: 24px;
    fill: var(--color-text-light);
    transition: fill 0.3s ease;
}

/* ホバー時：ミントグリーン (#46C1B0) に変化 */
.sns-icon-link:hover {
    background: var(--color-mint-pale);
    border-color: var(--color-mint);
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(70, 193, 176, 0.3);
}

.sns-icon-link:hover svg {
    fill: var(--color-mint);
}

/* 各SNSのアイコン個別色（ホバー時） */
.sns-icon-x:hover svg { fill: #000000; }
.sns-icon-facebook:hover svg { fill: #1877F2; }
.sns-icon-line:hover svg { fill: #00B900; }
.sns-icon-tiktok:hover svg { fill: #000000; }
.sns-icon-instagram:hover svg { fill: #E4405F; }
.sns-icon-youtube:hover svg { fill: #FF0000; }

.sns-widget-note {
    font-size: 0.75rem;
    color: var(--color-text-light);
    text-align: center;
    margin: var(--spacing-sm) 0 0;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-gray);
}

/* レスポンシブ対応 */
@media (max-width: 1024px) {
    .sns-sidebar {
        margin-top: var(--spacing-lg);
    }

    .sns-widget {
        position: static;
    }
}

@media (max-width: 768px) {
    .sns-icons-grid {
        gap: var(--spacing-md);
    }

    .sns-icon-link {
        width: 52px;
        height: 52px;
    }

    .sns-icon-link svg {
        width: 26px;
        height: 26px;
    }
}

/* News Grid 8col - no content message */
.news-grid-8col .no-content-message {
    grid-column: 1 / -1;
}

/* ========================================
   Manifest Detail Page Styles
======================================== */

/* パンくずリスト */
.breadcrumb {
    background: var(--color-gray-light);
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--color-gray);
}

.breadcrumb-inner {
    max-width: 1200px;
    margin: 0 auto;
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.breadcrumb a {
    color: var(--color-mint-dark);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb-separator {
    margin: 0 8px;
    color: var(--color-gray-dark);
}

.breadcrumb-current {
    color: var(--color-navy);
    font-weight: 500;
}

/* マニフェスト詳細ヘッダー */
.manifest-detail-header {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-mint-pale) 0%, var(--color-white) 100%);
    border-bottom: 3px solid var(--color-mint);
}

.manifest-detail-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--color-mint) 0%, var(--color-navy) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    box-shadow: var(--shadow-md);
}

.manifest-detail-title {
    font-size: 2rem;
    color: var(--color-navy);
    margin: 0;
    line-height: 1.3;
}

/* セクション見出し共通 */
.manifest-section-heading {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    color: var(--color-navy);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-mint);
}

.heading-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--color-mint);
    color: var(--color-white);
    border-radius: var(--radius-sm);
}

/* 説明文セクション */
.manifest-description-section {
    margin-bottom: var(--spacing-xl);
}

.manifest-description-content {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-mint);
}

.description-text {
    font-size: 1rem;
    line-height: 1.9;
    color: var(--color-text);
}

.description-text p {
    margin-bottom: var(--spacing-sm);
}

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

.no-description {
    color: var(--color-text-light);
    font-style: italic;
}

/* 公式リンクボックス */
.official-link-box {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-mint-pale) 0%, rgba(70, 193, 176, 0.1) 100%);
    border-radius: var(--radius-md);
    text-align: center;
}

.official-link-note {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin: 0 0 var(--spacing-sm);
}

.official-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-mint);
    color: var(--color-white);
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.official-link-btn:hover {
    background: var(--color-mint-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* 関連動画セクション */
.manifest-videos-section {
    margin-bottom: var(--spacing-xl);
}

.manifest-videos-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.manifest-video-item {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-float);
    border: 1px solid rgba(70, 193, 176, 0.1);
}

.manifest-video-embed-wrapper {
    width: 100%;
}

.manifest-video-embed-wrapper .video-embed {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    background: var(--color-navy);
}

.manifest-video-embed-wrapper .video-embed iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.video-thumb-link {
    display: block;
    position: relative;
    aspect-ratio: 16/9;
    background: var(--color-navy);
}

.video-thumb-link img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-play-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 64px;
    height: 64px;
    background: rgba(0, 0, 0, 0.75);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    transition: transform 0.2s ease;
}

.video-thumb-link:hover .video-play-overlay {
    transform: translate(-50%, -50%) scale(1.1);
}

.manifest-video-info {
    padding: var(--spacing-md);
}

.manifest-video-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0 0 var(--spacing-xs);
    line-height: 1.4;
}

.manifest-video-title a {
    color: var(--color-navy);
    text-decoration: none;
}

.manifest-video-title a:hover {
    color: var(--color-mint);
}

.manifest-video-meta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.video-duration-tag,
.video-date-tag {
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.video-duration-tag {
    background: var(--color-gray-light);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

.manifest-video-summary,
.manifest-video-description {
    font-size: 0.875rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.manifest-video-summary .ai-badge {
    display: inline-block;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    font-size: 0.625rem;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    margin-bottom: 8px;
}

.manifest-video-summary p {
    margin: 0;
}

/* もっと見るリンク */
.videos-more-link {
    text-align: center;
    margin-top: var(--spacing-md);
}

.more-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-mint);
    font-weight: 500;
    text-decoration: none;
    padding: 12px 24px;
    border: 2px solid var(--color-mint);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.more-link-btn:hover {
    background: var(--color-mint);
    color: var(--color-white);
}

/* 動画なしボックス */
.no-videos-box,
.no-articles-box {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-gray-light);
    border-radius: var(--radius-md);
    color: var(--color-text-light);
}

.no-videos-icon {
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-dark);
}

.no-videos-note {
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

/* 関連記事セクション */
.manifest-articles-section {
    margin-bottom: var(--spacing-xl);
}

.manifest-articles-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.manifest-article-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--color-white);
    border: 1px solid var(--color-gray);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

.manifest-article-item:hover {
    border-color: var(--color-mint);
    box-shadow: var(--shadow-sm);
    transform: translateX(4px);
}

.manifest-article-item .article-content {
    flex: 1;
}

.manifest-article-item .article-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-navy);
    margin: 0 0 var(--spacing-xs);
}

.manifest-article-item .article-meta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.article-source-tag {
    background: var(--color-navy);
    color: var(--color-white);
    font-size: 0.6875rem;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

.manifest-article-item .article-date {
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.manifest-article-item .article-excerpt {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin: 0;
    line-height: 1.5;
}

.manifest-article-item .article-arrow {
    font-size: 1.25rem;
    color: var(--color-mint);
    margin-left: var(--spacing-sm);
    transition: transform 0.2s ease;
}

.manifest-article-item:hover .article-arrow {
    transform: translateX(4px);
}

/* 他のマニフェストセクション */
.other-manifests-section {
    margin-bottom: var(--spacing-lg);
}

.other-manifests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-sm);
}

.other-manifest-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: var(--spacing-md);
    background: var(--color-white);
    border: 1px solid var(--color-gray);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all 0.3s ease;
}

.other-manifest-card:hover {
    border-color: var(--color-mint);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.other-manifest-icon {
    font-size: 1.5rem;
}

.other-manifest-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-navy);
    text-align: center;
}

/* マニフェスト詳細ページ モバイル対応 */
@media (max-width: 768px) {
    .manifest-detail-header {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .manifest-detail-icon {
        width: 64px;
        height: 64px;
        font-size: 2rem;
    }

    .manifest-detail-title {
        font-size: 1.5rem;
    }

    .manifest-section-heading {
        font-size: 1.125rem;
    }

    .manifest-video-item {
        border-radius: var(--radius-md);
    }

    .manifest-video-embed-wrapper .video-embed {
        margin: 0 auto;
        width: 100%;
    }

    .manifest-video-info {
        padding: var(--spacing-sm);
    }

    .manifest-video-title {
        font-size: 1rem;
    }

    .other-manifests-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }

    .other-manifest-card {
        padding: var(--spacing-sm);
    }

    .other-manifest-icon {
        font-size: 1.25rem;
    }

    .other-manifest-title {
        font-size: 0.75rem;
    }

    .manifest-article-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .manifest-article-item .article-arrow {
        align-self: flex-end;
        margin-top: var(--spacing-xs);
    }

    .breadcrumb-inner {
        font-size: 0.8125rem;
    }
}

/* ========================================
   Contact Form Styles
======================================== */
.gtm-contact-form-wrapper {
    max-width: 700px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

.gtm-contact-form {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-float);
    border: 1px solid rgba(70, 193, 176, 0.1);
}

.gtm-form-group {
    margin-bottom: var(--spacing-md);
}

.gtm-form-group label {
    display: block;
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: 8px;
    font-size: 0.9375rem;
}

.gtm-form-group label .required {
    color: var(--color-accent-coral);
    font-size: 0.875rem;
}

.gtm-form-group input[type="text"],
.gtm-form-group input[type="email"],
.gtm-form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--color-gray);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    background: var(--color-white);
}

.gtm-form-group input:focus,
.gtm-form-group textarea:focus {
    outline: none;
    border-color: var(--color-mint);
    box-shadow: 0 0 0 3px rgba(70, 193, 176, 0.15);
}

.gtm-form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.gtm-form-submit {
    margin-top: var(--spacing-lg);
    text-align: center;
}

.gtm-submit-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--color-mint) 0%, var(--color-mint-dark) 100%);
    color: var(--color-white);
    padding: 16px 48px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.0625rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(70, 193, 176, 0.3);
}

.gtm-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(70, 193, 176, 0.4);
}

.gtm-submit-btn:active {
    transform: translateY(0);
}

/* 成功・エラーメッセージ */
.gtm-contact-success {
    background: linear-gradient(135deg, var(--color-mint-pale) 0%, rgba(70, 193, 176, 0.1) 100%);
    border: 2px solid var(--color-mint);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
}

.gtm-contact-success p {
    color: var(--color-mint-dark);
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
}

.gtm-contact-error {
    background: #fef2f2;
    border: 2px solid var(--color-accent-coral);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.gtm-contact-error p {
    color: #dc2626;
    font-size: 0.9375rem;
    margin: 0;
}

/* お問い合わせページスタイル */
.contact-page-header {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-mint-pale) 0%, var(--color-white) 100%);
}

.contact-page-header h1 {
    font-size: 2rem;
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
}

.contact-page-header p {
    color: var(--color-text-light);
    font-size: 1rem;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .gtm-contact-form-wrapper {
        padding: var(--spacing-md);
    }

    .gtm-contact-form {
        padding: var(--spacing-md);
    }

    .gtm-submit-btn {
        width: 100%;
        padding: 14px 24px;
    }

    .contact-page-header h1 {
        font-size: 1.5rem;
    }
}

/* ========================================
   Privacy Policy Page Styles
======================================== */
.privacy-policy-main {
    padding: var(--spacing-lg) var(--spacing-md);
    background: var(--color-gray-light);
    min-height: 60vh;
}

.policy-content-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.policy-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.policy-header h1 {
    font-size: 2rem;
    color: var(--color-navy);
    margin-bottom: var(--spacing-xs);
}

.policy-subtitle {
    color: var(--color-text-light);
    font-size: 1rem;
}

.policy-content {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-float);
}

.policy-intro {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray);
}

.policy-section {
    margin-bottom: var(--spacing-lg);
}

.policy-section:last-of-type {
    margin-bottom: var(--spacing-md);
}

.policy-section h2 {
    font-size: 1.125rem;
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-sm);
    border-left: 4px solid var(--color-mint);
}

.policy-section p {
    font-size: 0.9375rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.policy-section ul {
    margin: 0;
    padding-left: var(--spacing-md);
}

.policy-section li {
    font-size: 0.9375rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: 8px;
}

.policy-section a {
    color: var(--color-mint-dark);
    text-decoration: underline;
}

.policy-section a:hover {
    color: var(--color-mint);
}

.policy-date {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray);
    text-align: right;
}

.policy-date p {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin: 0;
}

@media (max-width: 768px) {
    .policy-header h1 {
        font-size: 1.5rem;
    }

    .policy-content {
        padding: var(--spacing-md);
    }

    .policy-section h2 {
        font-size: 1rem;
    }
}