/* ========== 围棋文化页面专属样式 ========== */
/* 版本: 1.0.0 | 栏目: 围棋文化 | 作者: 芦笛 */

/* ===== 文化概览区 ===== */
.culture-hero-section {
    padding: var(--space-2xl) var(--space-md);
    background: var(--color-cream);
}

.culture-hero-container {
    max-width: 1200px;
    margin: 0 auto;
}

.culture-hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
    margin-top: var(--space-lg);
}

@media (max-width: 968px) {
    .culture-hero-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

.culture-hero-text h3 {
    font-family: var(--font-display);
    font-size: clamp(1.4rem, 2.5vw, 1.8rem);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-sm);
    letter-spacing: 3px;
    line-height: 1.4;
}

.culture-hero-text p {
    font-size: 0.95rem;
    color: var(--color-warm-gray);
    line-height: 2;
    margin-bottom: var(--space-md);
    font-weight: 300;
}

.culture-hero-text strong {
    color: var(--color-dark);
    font-weight: 600;
}

.culture-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-sm);
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid rgba(30, 30, 36, 0.06);
}

@media (max-width: 640px) {
    .culture-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

.culture-stat-item {
    text-align: center;
}

.culture-stat-num {
    display: block;
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-go-primary);
    line-height: 1.2;
}

.culture-stat-label {
    font-size: 0.75rem;
    color: var(--color-warm-gray);
    letter-spacing: 1px;
    margin-top: 4px;
    display: block;
}

.culture-hero-visual {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
    background: var(--color-pale);
    box-shadow: var(--shadow-lg);
}

.culture-hero-visual .go-board-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* ===== 历史沿革时间线 ===== */
.history-section {
    padding: var(--space-2xl) var(--space-md);
    background: white;
}

.history-container {
    max-width: 1000px;
    margin: 0 auto;
}

.history-timeline {
    position: relative;
    margin-top: var(--space-xl);
    padding-left: 60px;
}

@media (max-width: 768px) {
    .history-timeline {
        padding-left: 40px;
    }
}

.timeline-line {
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--color-accent), var(--color-go-light), var(--color-accent));
}

@media (max-width: 768px) {
    .timeline-line {
        left: 12px;
    }
}

.timeline-item {
    position: relative;
    margin-bottom: var(--space-xl);
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.timeline-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.timeline-marker {
    position: absolute;
    left: -52px;
    top: 0;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(196, 167, 125, 0.2);
    z-index: 2;
}

@media (max-width: 768px) {
    .timeline-marker {
        left: -36px;
        width: 32px;
        height: 32px;
    }
}

.timeline-year {
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 0.5px;
    white-space: nowrap;
}

@media (max-width: 768px) {
    .timeline-year {
        font-size: 0.55rem;
    }
}

.timeline-content {
    background: var(--color-cream);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    border: 1px solid rgba(30, 30, 36, 0.04);
    transition: var(--transition-normal);
}

.timeline-content:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

.timeline-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-xs);
    letter-spacing: 2px;
}

.timeline-desc {
    font-size: 0.9rem;
    color: var(--color-warm-gray);
    line-height: 1.9;
    font-weight: 300;
    margin-bottom: var(--space-sm);
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.timeline-tag {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(90, 109, 123, 0.08);
    color: var(--color-go-primary);
    font-size: 0.75rem;
    border-radius: var(--radius-full);
    font-weight: 500;
}

/* ===== 棋圣传记 ===== */
.masters-section {
    padding: var(--space-2xl) var(--space-md);
    background: linear-gradient(180deg, var(--color-cream) 0%, white 50%, var(--color-cream) 100%);
}

.masters-container {
    max-width: 1200px;
    margin: 0 auto;
}

.masters-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

@media (max-width: 968px) {
    .masters-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .masters-grid {
        grid-template-columns: 1fr;
    }
}

.master-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    border: 1px solid rgba(30, 30, 36, 0.04);
    transition: var(--transition-normal);
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
}

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

.master-avatar {
    flex-shrink: 0;
}

.master-avatar-inner {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

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

.master-name {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: 2px;
    margin-bottom: 2px;
}

.master-era {
    font-size: 0.75rem;
    color: var(--color-accent);
    font-weight: 500;
    letter-spacing: 1px;
    display: block;
    margin-bottom: var(--space-xs);
}

.master-desc {
    font-size: 0.85rem;
    color: var(--color-warm-gray);
    line-height: 1.8;
    font-weight: 300;
    margin-bottom: var(--space-sm);
}

.master-works {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.master-work-tag {
    display: inline-block;
    padding: 2px 8px;
    background: rgba(90, 109, 123, 0.06);
    color: var(--color-go-primary);
    font-size: 0.7rem;
    border-radius: var(--radius-full);
    font-weight: 500;
}

/* ===== 经典名局 ===== */
.famous-games-section {
    padding: var(--space-2xl) var(--space-md);
    background: white;
}

.famous-games-container {
    max-width: 1200px;
    margin: 0 auto;
}

.famous-games-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

@media (max-width: 968px) {
    .famous-games-grid {
        grid-template-columns: 1fr;
    }
}

.famous-game-card {
    background: var(--color-cream);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(30, 30, 36, 0.04);
    transition: var(--transition-normal);
    display: grid;
    grid-template-columns: 200px 1fr;
}

@media (max-width: 640px) {
    .famous-game-card {
        grid-template-columns: 1fr;
    }
}

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

.game-board-wrap {
    background: var(--color-board);
    position: relative;
    min-height: 200px;
}

@media (max-width: 640px) {
    .game-board-wrap {
        aspect-ratio: 4/3;
    }
}

.game-board-wrap canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.game-info {
    padding: var(--space-md) var(--space-lg);
}

.game-meta-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xs);
}

.game-era {
    font-size: 0.75rem;
    color: var(--color-warm-gray);
    font-weight: 500;
}

.game-badge {
    display: inline-block;
    padding: 2px 8px;
    background: var(--color-accent);
    color: white;
    font-size: 0.7rem;
    border-radius: var(--radius-full);
    font-weight: 500;
}

.game-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: 2px;
    margin-bottom: 4px;
}

.game-players {
    font-size: 0.85rem;
    color: var(--color-go-primary);
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.game-desc {
    font-size: 0.85rem;
    color: var(--color-warm-gray);
    line-height: 1.8;
    font-weight: 300;
    margin-bottom: var(--space-sm);
}

.game-detail {
    padding: var(--space-sm);
    background: rgba(90, 109, 123, 0.04);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-accent);
}

.game-detail p {
    font-size: 0.82rem;
    color: var(--color-warm-gray);
    line-height: 1.8;
    font-weight: 300;
}

.game-detail strong {
    color: var(--color-dark);
    font-weight: 600;
}

/* ===== 围棋与哲学 ===== */
.philosophy-section {
    padding: var(--space-2xl) var(--space-md);
    background: linear-gradient(180deg, var(--color-cream) 0%, white 50%, var(--color-cream) 100%);
}

.philosophy-container {
    max-width: 1200px;
    margin: 0 auto;
}

.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

@media (max-width: 968px) {
    .philosophy-grid {
        grid-template-columns: 1fr;
    }
}

.philosophy-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    border: 1px solid rgba(30, 30, 36, 0.04);
    transition: var(--transition-normal);
}

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

.philosophy-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
    color: white;
    margin-bottom: var(--space-sm);
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.philosophy-name {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: 3px;
    margin-bottom: var(--space-xs);
}

.philosophy-desc {
    font-size: 0.88rem;
    color: var(--color-warm-gray);
    line-height: 1.9;
    font-weight: 300;
    margin-bottom: var(--space-md);
}

.philosophy-quote {
    background: var(--color-cream);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-bottom: var(--space-md);
    border-left: 3px solid var(--color-accent);
}

.philosophy-quote blockquote {
    font-family: var(--font-display);
    font-size: 0.95rem;
    color: var(--color-dark);
    font-style: italic;
    line-height: 1.8;
    margin-bottom: var(--space-xs);
}

.philosophy-quote cite {
    font-size: 0.8rem;
    color: var(--color-warm-gray);
    font-style: normal;
}

.philosophy-points {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.philosophy-point {
    display: flex;
    gap: 8px;
    align-items: flex-start;
    font-size: 0.85rem;
    color: var(--color-warm-gray);
    line-height: 1.7;
    font-weight: 300;
}

.point-mark {
    color: var(--color-accent);
    font-size: 0.6rem;
    margin-top: 6px;
    flex-shrink: 0;
}

.philosophy-point strong {
    color: var(--color-dark);
    font-weight: 600;
}

/* ===== 围棋与诗词 ===== */
.poetry-section {
    padding: var(--space-2xl) var(--space-md);
    background: white;
}

.poetry-container {
    max-width: 1200px;
    margin: 0 auto;
}

.poetry-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

@media (max-width: 968px) {
    .poetry-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .poetry-grid {
        grid-template-columns: 1fr;
    }
}

.poetry-card {
    background: var(--color-cream);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    border: 1px solid rgba(30, 30, 36, 0.04);
    transition: var(--transition-normal);
}

.poetry-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

.poetry-card-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid rgba(30, 30, 36, 0.04);
}

.poetry-dynasty {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-accent);
    color: white;
    font-size: 0.7rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.poetry-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark);
    letter-spacing: 1px;
}

.poetry-content {
    font-family: var(--font-display);
    font-size: 0.95rem;
    color: var(--color-dark);
    line-height: 2.2;
    margin-bottom: var(--space-sm);
    padding: var(--space-sm) 0;
}

.poetry-content p {
    margin: 0;
    text-indent: 0;
}

.poetry-note {
    font-size: 0.8rem;
    color: var(--color-warm-gray);
    line-height: 1.7;
    font-weight: 300;
    padding-top: var(--space-sm);
    border-top: 1px dashed rgba(30, 30, 36, 0.08);
}

/* ===== 围棋礼仪 ===== */
.etiquette-section {
    padding: var(--space-2xl) var(--space-md);
    background: linear-gradient(180deg, var(--color-cream) 0%, white 50%, var(--color-cream) 100%);
}

.etiquette-container {
    max-width: 1200px;
    margin: 0 auto;
}

.etiquette-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

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

@media (max-width: 640px) {
    .etiquette-grid {
        grid-template-columns: 1fr;
    }
}

.etiquette-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    border: 1px solid rgba(30, 30, 36, 0.04);
    transition: var(--transition-normal);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.etiquette-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.etiquette-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-go-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-normal);
}

.etiquette-card:hover::before {
    transform: scaleX(1);
}

.etiquette-number {
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 2px;
    margin-bottom: var(--space-sm);
    display: block;
}

.etiquette-visual {
    width: 100%;
    aspect-ratio: 4/3;
    background: var(--color-board);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--space-sm);
    position: relative;
}

.etiquette-visual canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.etiquette-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-dark);
    letter-spacing: 2px;
    margin-bottom: var(--space-xs);
}

.etiquette-desc {
    font-size: 0.82rem;
    color: var(--color-warm-gray);
    line-height: 1.8;
    font-weight: 300;
    text-align: left;
}

/* ===== 响应式补充 ===== */
@media (max-width: 768px) {
    .culture-hero-text h3 {
        letter-spacing: 2px;
    }

    .timeline-content {
        padding: var(--space-sm) var(--space-md);
    }

    .timeline-title {
        font-size: 1.1rem;
    }

    .master-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .master-works {
        justify-content: center;
    }

    .game-info {
        padding: var(--space-md);
    }

    .philosophy-quote blockquote {
        font-size: 0.88rem;
    }

    .poetry-content {
        font-size: 0.9rem;
    }
}