/* ===========================
   のんゲーム攻略 - 共通スタイル
   =========================== */

/* リセット & ベース設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* カラーパレット */
    --color-primary: #d4af37;
    --color-secondary: #c41e3a;
    --color-dark: #0a0a0a;
    --color-dark-2: #1a1a1a;
    --color-dark-3: #2d2d2d;
    --color-dark-4: #3a3a3a;
    --color-light: #ffffff;
    --color-gray: #cccccc;
    --color-gray-dark: #888888;
    
    /* アクセントカラー */
    --color-red: #c41e3a;
    --color-gold: #d4af37;
    --color-blue: #4a90e2;
    --color-green: #2ecc71;
    
    /* タイポグラフィ */
    --font-main: 'Noto Sans JP', sans-serif;
    --font-accent: 'Cinzel', serif;
    
    /* スペーシング */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* シャドウ */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.6);
    --shadow-gold: 0 0 20px rgba(212, 175, 55, 0.3);
    
    /* トランジション */
    --transition: all 0.3s ease;
    --transition-slow: all 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--color-dark);
    color: var(--color-light);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

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

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

.header {
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-2) 100%);
    border-bottom: 2px solid var(--color-gold);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

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

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

.logo i {
    font-size: 2.5rem;
    color: var(--color-gold);
}

.logo-text-container {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--color-gray);
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.main-nav a {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    transition: var(--transition);
    font-weight: 500;
}

.main-nav a:hover,
.main-nav a.active {
    background-color: var(--color-dark-3);
    color: var(--color-gold);
}

.mobile-menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-gold);
}

/* ===========================
   ヒーロースライダー
   =========================== */

.hero-slider {
    position: relative;
    overflow: hidden;
    height: 600px;
}

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

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.hero-slide.active {
    opacity: 1;
    visibility: visible;
    position: absolute;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--color-dark-2) 0%, var(--color-dark) 100%);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-background.nioh1-bg {
    background-image: url('../images/nioh1-hero.jpg');
}

.hero-background.nioh2-bg {
    background-image: url('../images/nioh2-hero-bg.jpg');
}

.hero-background.nioh3-bg {
    background-image: url('../images/nioh3-hero-bg.jpg');
}

.hero-pattern {
    width: 100%;
    height: 100%;
    background-image: 
        repeating-linear-gradient(45deg, transparent, transparent 35px, rgba(212, 175, 55, 0.05) 35px, rgba(212, 175, 55, 0.05) 70px),
        repeating-linear-gradient(-45deg, transparent, transparent 35px, rgba(196, 30, 58, 0.05) 35px, rgba(196, 30, 58, 0.05) 70px);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(10, 10, 10, 0.6) 0%, rgba(10, 10, 10, 0.9) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: var(--spacing-xxl) 0;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--color-gray-dark);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.hero-badge.new {
    background: linear-gradient(135deg, var(--color-red) 0%, var(--color-gold) 100%);
    box-shadow: var(--shadow-gold);
}

.hero-title {
    margin-bottom: var(--spacing-md);
}

.title-main {
    display: block;
    font-family: var(--font-accent);
    font-size: 5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-light) 50%, var(--color-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.1em;
    line-height: 1.1;
}

.title-sub {
    display: block;
    font-size: 1.3rem;
    color: var(--color-gray);
    margin-top: var(--spacing-xs);
    letter-spacing: 0.2em;
    font-weight: 300;
}

.hero-info {
    margin: var(--spacing-lg) 0;
}

.hero-date {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.2rem;
    color: var(--color-gold);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-gray);
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* スライダーコントロール */
.slider-controls {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    z-index: 10;
}

.slider-btn {
    width: 40px;
    height: 40px;
    background: rgba(212, 175, 55, 0.2);
    border: 2px solid var(--color-gold);
    border-radius: 50%;
    color: var(--color-gold);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.slider-btn:hover {
    background: var(--color-gold);
    color: var(--color-dark);
    box-shadow: var(--shadow-gold);
}

.slider-dots {
    display: flex;
    gap: var(--spacing-sm);
}

.dot {
    width: 12px;
    height: 12px;
    background: rgba(212, 175, 55, 0.3);
    border: 2px solid var(--color-gold);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

.dot.active,
.dot:hover {
    background: var(--color-gold);
    box-shadow: var(--shadow-gold);
}

/* ===========================
   セクション共通
   =========================== */

section {
    padding: var(--spacing-xxl) 0;
}

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

.section-header h2 {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    font-size: 1.1rem;
    color: var(--color-gray);
}

.section-cta {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.coming-soon-label {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.8rem;
    color: var(--color-gray-dark);
}

.coming-soon-message {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-dark-2);
    border: 2px dashed var(--color-dark-3);
    border-radius: 8px;
}

.coming-soon-message i {
    font-size: 4rem;
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-md);
}

.coming-soon-message h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray);
}

.coming-soon-message p {
    color: var(--color-gray-dark);
}

/* ===========================
   ボタン
   =========================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
    text-align: center;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-gold) 0%, #b8941e 100%);
    color: var(--color-dark);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #e6c54a 0%, var(--color-gold) 100%);
    box-shadow: var(--shadow-gold);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--color-dark-3);
    color: var(--color-light);
    border: 2px solid var(--color-gold);
}

.btn-secondary:hover {
    background: var(--color-gold);
    color: var(--color-dark);
}

.btn-outline {
    background: transparent;
    color: var(--color-gold);
    border: 2px solid var(--color-gold);
}

.btn-outline:hover {
    background: var(--color-gold);
    color: var(--color-dark);
}

.btn-youtube {
    background: #ff0000;
    color: var(--color-light);
}

.btn-youtube:hover {
    background: #cc0000;
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
}

/* ===========================
   ゲームグリッド
   =========================== */

.games-section {
    background: var(--color-dark-2);
}

.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.game-card {
    background: var(--color-dark);
    border: 1px solid var(--color-dark-3);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.game-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-gold);
}

.game-card.featured {
    grid-column: span 3;
}

.game-card.featured .card-image {
    aspect-ratio: 21 / 9;
}

.game-card.coming-soon {
    opacity: 0.6;
}

.game-card.coming-soon:hover {
    opacity: 1;
}

.card-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--color-gray-dark);
    color: var(--color-light);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    z-index: 1;
}

.card-badge.new {
    background: linear-gradient(135deg, var(--color-red) 0%, var(--color-gold) 100%);
}

.card-image {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--color-dark-3);
}

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

.game-card:hover .card-image img {
    transform: scale(1.1);
}

.placeholder-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-dark-3) 0%, var(--color-dark-4) 100%);
    color: var(--color-gray-dark);
}

.placeholder-image i {
    font-size: 4rem;
}

/* ゲーム別カラー */
.placeholder-image.nioh3 {
    background: linear-gradient(135deg, #1a0a0a 0%, #3a1a1a 100%);
    color: var(--color-gold);
}

.placeholder-image.nioh2 {
    background: linear-gradient(135deg, #0a0a1a 0%, #1a1a3a 100%);
    color: #8a2be2;
}

.placeholder-image.nioh1 {
    background: linear-gradient(135deg, #1a0a0a 0%, #2a1a1a 100%);
    color: #ff6347;
}

.placeholder-image.wolong {
    background: linear-gradient(135deg, #0a1a0a 0%, #1a3a1a 100%);
    color: #32cd32;
}

.placeholder-image.ghost {
    background: linear-gradient(135deg, #0a1a1a 0%, #1a2a3a 100%);
    color: #4682b4;
}

.placeholder-image.other {
    background: linear-gradient(135deg, var(--color-dark-2) 0%, var(--color-dark-3) 100%);
    color: var(--color-gray);
}

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.game-card:hover .card-overlay {
    opacity: 1;
}

.overlay-link {
    width: 60px;
    height: 60px;
    background: var(--color-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-dark);
    font-size: 1.5rem;
    transition: var(--transition);
}

.overlay-link:hover {
    transform: scale(1.2);
    box-shadow: var(--shadow-gold);
}

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

.card-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--color-gold);
}

.card-subtitle {
    font-size: 0.9rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.1em;
}

.card-description {
    color: var(--color-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.card-stats {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: 0.85rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-gray-dark);
}

/* ===========================
   記事グリッド
   =========================== */

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.article-card {
    background: var(--color-dark-2);
    border: 1px solid var(--color-dark-3);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition);
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-gold);
}

.article-image {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--color-dark-3);
}

.article-category {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    background: var(--color-gold);
    color: var(--color-dark);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
}

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

.article-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-light);
}

.article-excerpt {
    color: var(--color-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.article-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: 0.85rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-gray-dark);
}

.article-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-gold);
    font-weight: 600;
    transition: var(--transition);
}

.article-link:hover {
    gap: var(--spacing-sm);
}

.article-link.disabled {
    color: var(--color-gray-dark);
    cursor: not-allowed;
}

/* ===========================
   YouTubeセクション
   =========================== */

.youtube-section {
    background: var(--color-dark-2);
}

.youtube-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.channel-info-box {
    background: var(--color-dark);
    border: 2px solid var(--color-dark-3);
    border-radius: 12px;
    padding: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-md);
}

.channel-avatar {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-dark-3);
}

.channel-avatar i {
    font-size: 4rem;
    color: var(--color-gold);
}

.channel-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.channel-name {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-gold);
}

.channel-stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-gray);
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
}

.separator {
    color: var(--color-gray-dark);
}

.channel-description {
    color: var(--color-gray);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.videos-grid {
    display: grid;
    gap: var(--spacing-md);
}

.video-card {
    background: var(--color-dark);
    border: 1px solid var(--color-dark-3);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    gap: var(--spacing-md);
    text-decoration: none;
    color: inherit;
}

.video-card:hover {
    border-color: var(--color-gold);
    transform: translateX(4px);
}

.video-card:hover .video-title {
    color: var(--accent-color, #C0C0C0);
}

.video-thumbnail {
    position: relative;
    width: 180px;
    aspect-ratio: 16 / 9;
    flex-shrink: 0;
    background: var(--color-dark-3);
}

.video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.placeholder-video {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a0a0a 0%, #2a1a1a 100%);
    color: var(--color-red);
}

.placeholder-video i {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.placeholder-video span {
    font-size: 0.8rem;
    color: var(--color-gray);
}

.video-duration {
    position: absolute;
    bottom: var(--spacing-xs);
    right: var(--spacing-xs);
    background: rgba(0, 0, 0, 0.8);
    color: var(--color-light);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.video-info {
    padding: var(--spacing-sm);
    flex: 1;
}

.video-title {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-light);
}

.video-meta {
    font-size: 0.85rem;
    color: var(--color-gray-dark);
}

/* ===========================
   デバイスセクション
   =========================== */

.devices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.device-card {
    background: var(--color-dark-2);
    border: 2px solid var(--color-dark-3);
    border-radius: 12px;
    padding: var(--spacing-lg);
    text-align: center;
    transition: var(--transition);
}

.device-card:hover {
    border-color: var(--color-gold);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.device-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--color-dark-3) 0%, var(--color-dark-4) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gold);
    font-size: 2rem;
}

.device-title {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-gold);
}

.device-description {
    color: var(--color-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

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

.footer {
    background: var(--color-dark-2);
    border-top: 2px solid var(--color-gold);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    margin-top: var(--spacing-xxl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    color: var(--color-gold);
    margin-bottom: var(--spacing-md);
    font-size: 1.2rem;
}

.footer-section p {
    color: var(--color-gray);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: var(--color-gray);
}

.footer-links a:hover {
    color: var(--color-gold);
    padding-left: var(--spacing-xs);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-link.youtube {
    background-color: #ff0000;
}

.social-link.twitter {
    background-color: #1da1f2;
}

.social-link:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-dark-3);
    color: var(--color-gray-dark);
    font-size: 0.9rem;
}

.disclaimer {
    margin-top: var(--spacing-sm);
    font-size: 0.8rem;
}

/* ===========================
   スクロールトップボタン
   =========================== */

.scroll-top-btn {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-gold) 0%, #b8941e 100%);
    color: var(--color-dark);
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    z-index: 1000;
}

.scroll-top-btn.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top-btn:hover {
    background: linear-gradient(135deg, #e6c54a 0%, var(--color-gold) 100%);
    box-shadow: var(--shadow-gold);
    transform: translateY(-4px);
}

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

@media (max-width: 1200px) {
    .game-card.featured {
        grid-column: span 1;
    }
    
    .youtube-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .title-main {
        font-size: 3rem;
    }
    
    .title-sub {
        font-size: 1rem;
    }
    
    .main-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero-slider {
        height: 500px;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .games-grid,
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .channel-info-box {
        flex-direction: column;
        text-align: center;
    }
    
    .video-card {
        flex-direction: column;
    }
    
    .video-thumbnail {
        width: 100%;
    }
    
    .slider-controls {
        bottom: var(--spacing-sm);
    }
    
    .slider-btn {
        width: 36px;
        height: 36px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .title-main {
        font-size: 2.5rem;
    }
    
    .hero-slider {
        height: 450px;
    }
    
    .hero-content {
        padding: var(--spacing-xl) 0;
    }
    
    section {
        padding: var(--spacing-lg) 0;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
}