/* ========== 艺术史栏目专用样式 ========== */
/* 版本: 1.0.0 | 栏目: 艺术史 | 作者: 芦笛 */

/* ===== 栏目专属色变量 ===== */
:root {
    --color-arthistory-primary: #8E7F7F;
    --color-arthistory-dark: #6B5B5B;
    --color-arthistory-light: #AE9F9F;
    --color-bronze: #8B6914;
    --color-terracotta: #C17C53;
    --color-jade: #6B8E6B;
    --color-ochre: #CC7722;
    --color-ivory: #FFFFF0;
}

/* ===== 页面头部 ===== */
.page-header {
    position: relative;
    min-height: 65vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #6B5B5B, #8E7F7F, #7B6B6B, #5A4A4A);
    background-size: 400% 400%;
    animation: gradient-shift 15s ease infinite;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M50 50c0-5.523 4.477-10 10-10s10 4.477 10 10-4.477 10-10 10-10-4.477-10-10zM10 10c0-5.523 4.477-10 10-10s10 4.477 10 10-4.477 10-10 10-10-4.477-10-10z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 100px;
    background: var(--color-cream);
    clip-path: ellipse(70% 100% at 50% 100%);
}

.page-header-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
    padding: var(--space-xl) var(--space-md) var(--space-lg);
    max-width: 800px;
}

.page-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    margin-bottom: var(--space-sm);
    letter-spacing: 12px;
    text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.page-subtitle {
    font-size: 1.05rem;
    opacity: 0.75;
    max-width: 560px;
    margin: 0 auto;
    line-height: 2;
    font-weight: 300;
    letter-spacing: 1px;
}

.page-header-deco {
    position: absolute;
    border: 1px solid rgba(196, 167, 125, 0.15);
    pointer-events: none;
}

.page-header-deco:nth-child(1) {
    top: 10%;
    left: 5%;
    width: 120px;
    height: 160px;
    border-radius: 4px;
    transform: rotate(-15deg);
    animation: float 8s ease-in-out infinite;
}

.page-header-deco:nth-child(2) {
    bottom: 20%;
    right: 8%;
    width: 80px;
    height: 100px;
    border-radius: 50%;
    animation: float 6s ease-in-out infinite reverse;
}

.page-header-deco:nth-child(3) {
    top: 25%;
    right: 20%;
    width: 0;
    height: 0;
    border-left: 30px solid transparent;
    border-right: 30px solid transparent;
    border-bottom: 50px solid rgba(196, 167, 125, 0.08);
    animation: float 10s ease-in-out infinite;
}

/* ===== 面包屑导航 ===== */
.breadcrumb-wrap {
    background: var(--color-cream);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(30, 30, 36, 0.04);
}

.breadcrumb-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

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

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

.overview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

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

.overview-text h2 {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-sm);
    letter-spacing: 3px;
    line-height: 1.4;
}

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

.overview-quote {
    border-left: 3px solid var(--color-accent);
    padding-left: var(--space-md);
    margin: var(--space-md) 0;
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--color-primary);
    font-style: italic;
    line-height: 1.8;
}

.overview-quote cite {
    display: block;
    margin-top: var(--space-xs);
    font-size: 0.8rem;
    color: var(--color-warm-gray);
    font-style: normal;
}

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

.overview-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.overview-visual:hover img {
    transform: scale(1.03);
}

.overview-visual-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-md);
    background: linear-gradient(transparent, rgba(30,30,36,0.7));
    color: white;
    font-size: 0.85rem;
    text-align: center;
}

/* ===== 时间线画布区 ===== */
.timeline-section {
    padding: var(--space-2xl) var(--space-md);
    background: white;
}

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

.timeline-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.timeline-tab {
    padding: 0.6rem 1.5rem;
    border: 1.5px solid rgba(142, 127, 127, 0.3);
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--color-warm-gray);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
    letter-spacing: 1px;
}

.timeline-tab:hover {
    border-color: var(--color-arthistory-primary);
    color: var(--color-arthistory-primary);
}

.timeline-tab.active {
    background: var(--color-arthistory-primary);
    color: white;
    border-color: var(--color-arthistory-primary);
}

.timeline-canvas-wrap {
    position: relative;
    width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: linear-gradient(135deg, #FAF8F5, #F0EBE3);
    border: 1px solid rgba(30, 30, 36, 0.04);
}

.timeline-canvas {
    width: 100%;
    height: 320px;
    display: block;
}

.timeline-legend {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-md);
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--color-warm-gray);
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

/* ===== 流派卡片区 ===== */
.schools-section {
    padding: var(--space-2xl) var(--space-md);
    background: var(--color-cream);
}

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

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

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

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

.school-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-normal);
    border: 1px solid rgba(30, 30, 36, 0.04);
    position: relative;
    cursor: pointer;
}

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

.school-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

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

.school-card-visual {
    width: 100%;
    height: 180px;
    background: var(--color-pale);
    position: relative;
    overflow: hidden;
}

.school-card-visual canvas {
    width: 100%;
    height: 100%;
}

.school-card-body {
    padding: var(--space-md);
}

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

.school-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-arthistory-primary), var(--color-arthistory-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: white;
    flex-shrink: 0;
}

.school-name {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: 1px;
}

.school-name-en {
    font-size: 0.7rem;
    color: var(--color-warm-gray);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-top: 2px;
}

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

.school-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.school-tag {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(142, 127, 127, 0.08);
    color: var(--color-arthistory-primary);
    font-size: 0.75rem;
    border-radius: var(--radius-full);
    font-weight: 500;
}

/* ===== 名作赏析区 ===== */
.masterpieces-section {
    padding: var(--space-2xl) var(--space-md);
    background: white;
}

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

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

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

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

.masterpiece-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 3/4;
    cursor: pointer;
    background: var(--color-pale);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

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

.masterpiece-card canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.masterpiece-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 30%, rgba(30,30,36,0.8) 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-md);
    color: white;
    opacity: 0;
    transition: var(--transition-fast);
}

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

.masterpiece-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.masterpiece-artist {
    font-size: 0.8rem;
    opacity: 0.8;
    font-weight: 300;
}

.masterpiece-era {
    font-size: 0.75rem;
    opacity: 0.6;
    margin-top: 4px;
}

/* ===== 对比研究区 ===== */
.compare-section {
    padding: var(--space-2xl) var(--space-md);
    background: linear-gradient(180deg, var(--color-cream) 0%, white 50%, var(--color-cream) 100%);
}

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

.compare-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    margin-top: var(--space-lg);
}

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

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

.compare-column h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-md);
    letter-spacing: 2px;
    text-align: center;
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-accent);
}

.compare-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(30, 30, 36, 0.04);
}

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

.compare-item-marker {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-arthistory-primary), var(--color-arthistory-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: white;
    flex-shrink: 0;
    font-weight: 600;
}

.compare-item-content h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 4px;
    letter-spacing: 1px;
}

.compare-item-content p {
    font-size: 0.85rem;
    color: var(--color-warm-gray);
    line-height: 1.7;
    font-weight: 300;
}

.compare-item-content .era-tag {
    display: inline-block;
    margin-top: 4px;
    padding: 2px 8px;
    background: rgba(142, 127, 127, 0.08);
    color: var(--color-arthistory-primary);
    font-size: 0.7rem;
    border-radius: var(--radius-full);
}

/* ===== 学习路径区 ===== */
.pathway-section {
    padding: var(--space-2xl) var(--space-md);
    background: white;
}

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

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

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

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

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

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

.pathway-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-arthistory-light));
    opacity: 0;
    transition: var(--transition-fast);
}

.pathway-card:hover::after {
    opacity: 1;
}

.pathway-num {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-arthistory-light), var(--color-arthistory-primary));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-sm);
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: white;
}

.pathway-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 6px;
    letter-spacing: 1px;
}

.pathway-desc {
    font-size: 0.82rem;
    color: var(--color-warm-gray);
    line-height: 1.7;
    font-weight: 300;
}

/* ===== 推荐阅读区 ===== */
.reading-section {
    padding: var(--space-2xl) var(--space-md);
    background: var(--color-cream);
}

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

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

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

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

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

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

.reading-cover {
    width: 80px;
    height: 110px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--color-arthistory-light), var(--color-arthistory-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 600;
    text-align: center;
    padding: 8px;
    flex-shrink: 0;
    line-height: 1.4;
}

.reading-info h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 6px;
    letter-spacing: 1px;
}

.reading-info .reading-author {
    font-size: 0.8rem;
    color: var(--color-warm-gray);
    margin-bottom: 8px;
}

.reading-info p {
    font-size: 0.82rem;
    color: var(--color-warm-gray);
    line-height: 1.7;
    font-weight: 300;
}

/* ===== CTA 区 ===== */
.cta-section {
    padding: var(--space-2xl) var(--space-md);
    background: linear-gradient(135deg, var(--color-arthistory-dark), #4A3F3F, var(--color-arthistory-primary));
    background-size: 400% 400%;
    animation: gradient-shift 15s ease infinite;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    letter-spacing: 3px;
}

.cta-desc {
    font-size: 1rem;
    opacity: 0.7;
    margin-bottom: var(--space-lg);
    font-weight: 300;
    line-height: 1.9;
}

.cta-buttons {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== 灯箱样式 ===== */
.art-lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.art-lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(30, 30, 36, 0.92);
    backdrop-filter: blur(8px);
}

.lightbox-content {
    position: relative;
    z-index: 1;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.lightbox-canvas {
    max-width: 100%;
    max-height: 70vh;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);
    background: white;
}

.lightbox-info {
    margin-top: 16px;
    text-align: center;
    color: white;
}

.lightbox-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 4px;
}

.lightbox-meta {
    font-size: 0.85rem;
    opacity: 0.7;
    font-weight: 300;
}

.lightbox-close {
    position: absolute;
    top: -48px;
    right: 0;
    width: 40px;
    height: 40px;
    border: none;
    background: rgba(255,255,255,0.15);
    color: white;
    font-size: 1.8rem;
    line-height: 1;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-close:hover {
    background: rgba(255,255,255,0.3);
}

/* ===== 响应式补充 ===== */
@media (max-width: 768px) {
    .page-title {
        letter-spacing: 6px;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .cta-buttons .btn {
        width: 100%;
        max-width: 280px;
    }

    .timeline-canvas {
        height: 260px;
    }

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

    .lightbox-canvas {
        max-height: 55vh;
    }

    .lightbox-close {
        top: -40px;
        width: 36px;
        height: 36px;
        font-size: 1.5rem;
    }
}

/* ===== 动画关键帧补充 ===== */
@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(-15deg); }
    50% { transform: translateY(-12px) rotate(-12deg); }
}


/* ========== 世界艺术编年史区域 ========== */
/* 版本: 1.0.0 | 栏目: 艺术史-编年史 | 作者: 芦笛 */

/* ===== 编年史主区域 ===== */
.chronicle-section {
    padding: var(--space-2xl) var(--space-md);
    background: linear-gradient(180deg, var(--color-cream) 0%, #F5F0E8 30%, var(--color-cream) 70%, white 100%);
    position: relative;
    overflow: hidden;
}

.chronicle-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    opacity: 0.3;
}

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

/* ===== 书籍Hero区 ===== */
.chronicle-hero {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: var(--space-xl);
    align-items: center;
    margin-bottom: var(--space-2xl);
    padding: var(--space-xl);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(30, 30, 36, 0.04);
    position: relative;
    overflow: hidden;
}

.chronicle-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-accent), var(--color-arthistory-primary), var(--color-accent));
}

@media (max-width: 968px) {
    .chronicle-hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding: var(--space-lg);
    }
}

.chronicle-book-wrap {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.chronicle-book-canvas {
    width: 260px;
    height: 360px;
    border-radius: var(--radius-md);
    box-shadow: 0 20px 60px rgba(30, 30, 36, 0.2);
    display: block;
}

.chronicle-hero-content {
    position: relative;
    z-index: 1;
}

.chronicle-badge {
    display: inline-block;
    padding: 0.4rem 1.2rem;
    background: linear-gradient(135deg, var(--color-arthistory-primary), var(--color-arthistory-dark));
    color: white;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 3px;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-sm);
}

.chronicle-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    font-weight: 900;
    color: var(--color-dark);
    margin-bottom: var(--space-xs);
    letter-spacing: 4px;
    line-height: 1.3;
}

.chronicle-subtitle {
    font-size: 0.9rem;
    color: var(--color-warm-gray);
    letter-spacing: 1px;
    margin-bottom: var(--space-md);
    font-weight: 300;
}

.chronicle-subtitle-en {
    font-size: 0.75rem;
    color: var(--color-arthistory-light);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: var(--space-md);
}

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

.chronicle-stats {
    display: flex;
    gap: var(--space-lg);
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
}

@media (max-width: 968px) {
    .chronicle-stats {
        justify-content: center;
    }
}

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

.stat-num {
    display: block;
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-arthistory-primary);
    line-height: 1;
}

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

.chronicle-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

@media (max-width: 968px) {
    .chronicle-actions {
        justify-content: center;
    }
}

/* ===== 编著者介绍 ===== */
.chronicle-author {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--space-xl);
    align-items: start;
    margin-bottom: var(--space-2xl);
    padding: var(--space-xl);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(30, 30, 36, 0.04);
}

@media (max-width: 968px) {
    .chronicle-author {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

.author-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.author-portrait-canvas {
    width: 240px;
    height: 300px;
    border-radius: var(--radius-lg);
    display: block;
}

.author-info {
    position: relative;
}

.author-name {
    font-family: var(--font-display);
    font-size: clamp(1.4rem, 2.5vw, 1.8rem);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 4px;
    letter-spacing: 3px;
}

.author-name-en {
    font-size: 0.85rem;
    color: var(--color-arthistory-light);
    font-weight: 400;
    letter-spacing: 2px;
}

.author-title {
    font-size: 0.9rem;
    color: var(--color-arthistory-primary);
    margin-bottom: var(--space-md);
    font-weight: 500;
    letter-spacing: 1px;
}

.author-bio {
    margin-bottom: var(--space-md);
}

.author-bio p {
    font-size: 0.9rem;
    color: var(--color-warm-gray);
    line-height: 2;
    margin-bottom: var(--space-sm);
    font-weight: 300;
    text-align: justify;
}

.author-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

@media (max-width: 968px) {
    .author-meta {
        justify-content: center;
    }
}

.author-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(142, 127, 127, 0.08);
    color: var(--color-arthistory-primary);
    font-size: 0.75rem;
    border-radius: var(--radius-full);
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* ===== 章节总览 ===== */
.chronicle-toc {
    margin-bottom: var(--space-2xl);
}

.toc-timeline {
    position: relative;
    width: 100%;
    height: 120px;
    margin-bottom: var(--space-lg);
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(30, 30, 36, 0.04);
}

.toc-timeline-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.toc-parts {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.toc-part {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(30, 30, 36, 0.04);
    transition: var(--transition-normal);
}

.toc-part:hover {
    box-shadow: var(--shadow-md);
}

.toc-part-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    cursor: pointer;
    transition: var(--transition-fast);
    border-bottom: 1px solid transparent;
}

.toc-part-header:hover {
    background: rgba(142, 127, 127, 0.03);
}

.toc-part-header.active {
    border-bottom-color: rgba(30, 30, 36, 0.04);
}

.toc-part-num {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-arthistory-light), var(--color-arthistory-primary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.toc-part-title {
    flex: 1;
}

.toc-part-title h4 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-dark);
    letter-spacing: 1px;
    margin-bottom: 2px;
}

.toc-part-title .toc-part-era {
    font-size: 0.8rem;
    color: var(--color-warm-gray);
    font-weight: 300;
}

.toc-part-toggle {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: rgba(142, 127, 127, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--color-arthistory-primary);
    transition: var(--transition-fast);
    flex-shrink: 0;
    border: none;
    cursor: pointer;
}

.toc-part-toggle:hover {
    background: var(--color-arthistory-primary);
    color: white;
}

.toc-part-toggle.active {
    transform: rotate(180deg);
}

.toc-part-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.toc-part-body.open {
    max-height: 2000px;
}

.toc-chapters {
    padding: var(--space-md) var(--space-lg) var(--space-lg);
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
}

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

.toc-chapter {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: var(--color-cream);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.toc-chapter:hover {
    background: var(--color-pale);
    transform: translateX(4px);
}

.toc-chapter-num {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-accent), var(--color-gold));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 600;
    color: white;
    flex-shrink: 0;
}

.toc-chapter-info h5 {
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 2px;
    letter-spacing: 0.5px;
}

.toc-chapter-info p {
    font-size: 0.78rem;
    color: var(--color-warm-gray);
    line-height: 1.6;
    font-weight: 300;
}

.toc-appendix {
    padding: var(--space-md) var(--space-lg) var(--space-lg);
}

.toc-appendix-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
}

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

.toc-appendix-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: var(--color-cream);
    border-radius: var(--radius-md);
}

.toc-appendix-item span {
    font-size: 0.85rem;
    color: var(--color-dark);
    font-weight: 500;
}

/* ===== 特色亮点 ===== */
.chronicle-features {
    margin-bottom: var(--space-2xl);
}

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

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

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

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

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

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

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

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-arthistory-light), var(--color-arthistory-primary));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-sm);
    font-size: 1.5rem;
    color: white;
}

.feature-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.feature-desc {
    font-size: 0.82rem;
    color: var(--color-warm-gray);
    line-height: 1.7;
    font-weight: 300;
}

/* ===== 编年史CTA ===== */
.chronicle-cta {
    background: linear-gradient(135deg, var(--color-arthistory-dark), #4A3F3F, var(--color-arthistory-primary));
    background-size: 400% 400%;
    animation: gradient-shift 15s ease infinite;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.chronicle-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.chronicle-cta .cta-content {
    position: relative;
    z-index: 1;
}

.chronicle-cta h3 {
    font-family: var(--font-display);
    font-size: clamp(1.4rem, 2.5vw, 1.8rem);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    letter-spacing: 2px;
}

.chronicle-cta p {
    font-size: 0.95rem;
    opacity: 0.7;
    margin-bottom: var(--space-md);
    font-weight: 300;
}

.chronicle-cta .cta-buttons {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== 世界地图艺术分布 ===== */
.world-map-wrap {
    position: relative;
    width: 100%;
    height: 300px;
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(30, 30, 36, 0.04);
    margin-bottom: var(--space-lg);
}

.world-map-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* ===== 响应式补充 ===== */
@media (max-width: 768px) {
    .chronicle-book-canvas {
        width: 200px;
        height: 280px;
    }

    .author-portrait-canvas {
        width: 180px;
        height: 220px;
    }

    .chronicle-title {
        letter-spacing: 2px;
    }

    .chronicle-cta .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .chronicle-cta .cta-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
}


/* ========== 世界艺术编年史 · 目录页专用样式 ========== */
/* 版本: 1.0.0 | 作者: 芦笛 */

/* ===== 目录主体区 ===== */
.toc-main-section {
    padding: var(--space-2xl) var(--space-md);
    background: linear-gradient(180deg, white 0%, var(--color-cream) 50%, white 100%);
}

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

/* ===== 时间线快捷导航 ===== */
.toc-nav-timeline {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
    padding: var(--space-md);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(30, 30, 36, 0.04);
}

.toc-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 0.6rem 1rem;
    border-radius: var(--radius-md);
    background: transparent;
    transition: var(--transition-fast);
    text-decoration: none;
    color: inherit;
    min-width: 80px;
}

.toc-nav-item:hover {
    background: rgba(142, 127, 127, 0.06);
    transform: translateY(-2px);
}

.toc-nav-num {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-arthistory-light), var(--color-arthistory-primary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 700;
    color: white;
}

.toc-nav-label {
    font-size: 0.75rem;
    color: var(--color-warm-gray);
    font-weight: 500;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

/* ===== 编区块 ===== */
.toc-part-block {
    margin-bottom: var(--space-xl);
}

.toc-part-header-bar {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(30, 30, 36, 0.04);
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
    position: relative;
    overflow: hidden;
}

.toc-part-header-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-accent), var(--color-arthistory-primary));
}

.toc-part-badge {
    padding: 0.35rem 0.9rem;
    background: linear-gradient(135deg, var(--color-arthistory-primary), var(--color-arthistory-dark));
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 2px;
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.toc-part-name {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: 2px;
    flex: 1;
    min-width: 200px;
}

.toc-part-era {
    font-size: 0.8rem;
    color: var(--color-warm-gray);
    font-weight: 300;
    letter-spacing: 1px;
    flex-shrink: 0;
}

.toc-part-progress {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.toc-progress-track {
    width: 80px;
    height: 4px;
    background: rgba(142, 127, 127, 0.1);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.toc-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent), var(--color-arthistory-primary));
    border-radius: var(--radius-full);
    transition: width 0.6s ease;
}

.toc-progress-text {
    font-size: 0.75rem;
    color: var(--color-warm-gray);
    font-weight: 500;
}

/* ===== 章节卡片网格 ===== */
.toc-chapters-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

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

.toc-chapter-card {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(30, 30, 36, 0.04);
    transition: var(--transition-normal);
    text-decoration: none;
    color: inherit;
    position: relative;
    overflow: hidden;
}

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

.toc-chapter-card.disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.toc-chapter-card.disabled:hover {
    transform: none;
    box-shadow: var(--shadow-sm);
    border-color: rgba(30, 30, 36, 0.04);
}

.toc-chapter-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-accent), var(--color-arthistory-light));
    transform: scaleY(0);
    transform-origin: top;
    transition: var(--transition-normal);
}

.toc-chapter-card:hover::before {
    transform: scaleY(1);
}

.toc-chapter-card.disabled::before {
    display: none;
}

.toc-chapter-num {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-accent), var(--color-gold));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.toc-chapter-body {
    flex: 1;
    min-width: 0;
}

.toc-chapter-body h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 6px;
    letter-spacing: 0.5px;
}

.toc-chapter-body p {
    font-size: 0.82rem;
    color: var(--color-warm-gray);
    line-height: 1.7;
    font-weight: 300;
    margin-bottom: 8px;
}

.toc-chapter-status {
    display: inline-block;
    padding: 2px 10px;
    background: rgba(142, 127, 127, 0.08);
    color: var(--color-arthistory-primary);
    font-size: 0.7rem;
    border-radius: var(--radius-full);
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* ===== 响应式补充 ===== */
@media (max-width: 768px) {
    .toc-part-header-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }

    .toc-part-name {
        font-size: 1.1rem;
    }

    .toc-part-progress {
        width: 100%;
    }

    .toc-nav-timeline {
        gap: 4px;
        padding: var(--space-sm);
    }

    .toc-nav-item {
        padding: 0.4rem 0.6rem;
        min-width: 60px;
    }

    .toc-nav-num {
        width: 30px;
        height: 30px;
        font-size: 0.8rem;
    }

    .toc-nav-label {
        font-size: 0.65rem;
    }
}