/* ========== 巴洛克艺术专题页面样式 ========== */
/* 版本: 1.0.0 | 栏目: 艺术史-巴洛克 | 作者: 芦笛 */

/* ===== 栏目专属色变量 ===== */
:root {
    --color-baroque-primary: #8B5E3C;
    --color-baroque-dark: #5C3A21;
    --color-baroque-light: #B88A5E;
    --color-baroque-gold: #C4A77D;
    --color-baroque-crimson: #8B3A3A;
    --color-baroque-warm: #D4A574;
}

/* ===== 通用容器 ===== */
.section-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ===== 页面头部 ===== */
.baroque-hero {
    position: relative;
    min-height: 65vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(160deg, #1a0f0a 0%, #3d2317 30%, #5C3A21 50%, #8B5E3C 70%, #2a1810 100%);
    background-size: 400% 400%;
    animation: baroque-gradient 20s ease infinite;
    overflow: hidden;
    padding-top: 72px;
}

@keyframes baroque-gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.baroque-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 20% 30%, rgba(196, 167, 125, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(139, 58, 58, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(184, 138, 94, 0.04) 0%, transparent 60%);
    pointer-events: none;
}

.baroque-hero::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 120px;
    background: var(--color-cream);
    clip-path: ellipse(75% 100% at 50% 100%);
}

.baroque-hero-deco {
    position: absolute;
    pointer-events: none;
    border: 1px solid rgba(196, 167, 125, 0.1);
}

.baroque-hero-deco:nth-child(1) {
    top: 15%;
    left: 8%;
    width: 150px;
    height: 200px;
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
    transform: rotate(-20deg);
    animation: baroque-float 10s ease-in-out infinite;
}

.baroque-hero-deco:nth-child(2) {
    bottom: 25%;
    right: 10%;
    width: 100px;
    height: 130px;
    border-radius: 40% 60% 60% 40% / 50% 50% 50% 50%;
    animation: baroque-float 8s ease-in-out infinite reverse;
}

@keyframes baroque-float {
    0%, 100% { transform: translateY(0) rotate(-20deg); }
    50% { transform: translateY(-15px) rotate(-15deg); }
}

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

.hero-era {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    letter-spacing: 6px;
    color: var(--color-baroque-gold);
    margin-bottom: var(--space-md);
    opacity: 0.8;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    letter-spacing: 6px;
    margin-bottom: var(--space-sm);
    text-shadow: 0 4px 30px rgba(0,0,0,0.3);
    line-height: 1.3;
}

.hero-subtitle {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--color-baroque-gold);
    letter-spacing: 4px;
    margin-bottom: var(--space-lg);
    opacity: 0.9;
}

.hero-desc {
    font-size: 1rem;
    line-height: 2.2;
    opacity: 0.65;
    font-weight: 300;
    max-width: 600px;
    margin: 0 auto;
}

.hero-scroll-hint {
    position: absolute;
    bottom: 140px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.4);
    font-size: 0.75rem;
    letter-spacing: 2px;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(196,167,125,0.5), transparent);
    animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ===== 面包屑 ===== */
.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: 1100px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ===== 核心引言区 ===== */
.intro-section {
    padding: var(--space-2xl) var(--space-md);
    background: var(--color-cream);
}

.intro-grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--space-xl);
    align-items: start;
}

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

.intro-body {
    margin-top: var(--space-md);
}

.intro-body p {
    font-size: 1rem;
    line-height: 2.1;
    color: var(--color-dark);
    margin-bottom: var(--space-md);
    text-align: justify;
}

.intro-body p strong {
    color: var(--color-baroque-dark);
    font-weight: 600;
}

.intro-body em {
    font-style: italic;
    color: var(--color-baroque-primary);
}

.baroque-quote {
    border-left: 3px solid var(--color-baroque-gold);
    padding-left: var(--space-md);
    margin: var(--space-lg) 0;
    font-family: var(--font-display);
    font-size: 1.15rem;
    color: var(--color-baroque-dark);
    font-style: italic;
    line-height: 1.9;
}

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

/* 侧边信息卡 */
.intro-sidebar {
    position: sticky;
    top: 100px;
}

.info-card {
    background: white;
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-bottom: var(--space-sm);
    border: 1px solid rgba(30, 30, 36, 0.04);
    box-shadow: var(--shadow-sm);
}

.info-card h4 {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-baroque-dark);
    margin-bottom: 8px;
    letter-spacing: 1px;
}

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

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
}

.tag {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(139, 94, 60, 0.08);
    color: var(--color-baroque-primary);
    font-size: 0.75rem;
    border-radius: var(--radius-full);
    font-weight: 500;
}

/* ===== 哲学根基区 ===== */
.philosophy-section {
    padding: var(--space-2xl) var(--space-md);
    background: white;
}

.philosophy-body {
    max-width: 800px;
    margin: 0 auto var(--space-xl);
}

.philosophy-body p {
    font-size: 1rem;
    line-height: 2.1;
    color: var(--color-dark);
    margin-bottom: var(--space-md);
    text-align: justify;
}

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

.philosophy-compare {
    display: flex;
    align-items: stretch;
    gap: var(--space-md);
    max-width: 900px;
    margin: 0 auto;
}

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

.compare-box.highlight {
    background: linear-gradient(135deg, var(--color-baroque-dark), #4a2e1a);
    color: white;
    border: none;
}

.compare-box.highlight h4 {
    color: var(--color-baroque-gold);
}

.compare-box.highlight ul {
    color: rgba(255,255,255,0.8);
}

.compare-box h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-baroque-dark);
    margin-bottom: var(--space-md);
    letter-spacing: 1px;
    text-align: center;
}

.compare-box ul {
    list-style: none;
    padding: 0;
}

.compare-box li {
    font-size: 0.9rem;
    line-height: 2;
    padding-left: 1.2rem;
    position: relative;
    font-weight: 300;
}

.compare-box li::before {
    content: '◆';
    position: absolute;
    left: 0;
    font-size: 0.5rem;
    color: var(--color-baroque-gold);
    top: 2px;
}

.compare-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--color-baroque-gold);
    font-weight: 300;
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .philosophy-compare {
        flex-direction: column;
    }
    .compare-arrow {
        transform: rotate(90deg);
        padding: var(--space-sm) 0;
    }
}

/* ===== 美学特征区 ===== */
.aesthetics-section {
    padding: var(--space-2xl) var(--space-md);
    background: var(--color-cream);
}

.feature-block {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: var(--space-xl);
    align-items: start;
    margin-bottom: var(--space-2xl);
    padding: var(--space-xl) 0;
    border-bottom: 1px solid rgba(30, 30, 36, 0.06);
}

.feature-block.alt {
    grid-template-columns: 420px 1fr;
}

.feature-block:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

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

.feature-text {
    padding-top: var(--space-sm);
}

.feature-num {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 900;
    color: var(--color-baroque-gold);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.feature-title {
    font-family: var(--font-display);
    font-size: clamp(1.3rem, 2.5vw, 1.6rem);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-md);
    letter-spacing: 1px;
    line-height: 1.4;
}

.feature-title em {
    font-style: italic;
    color: var(--color-baroque-primary);
    font-weight: 400;
    font-size: 0.9em;
}

.feature-text p {
    font-size: 0.95rem;
    line-height: 2;
    color: var(--color-dark);
    margin-bottom: var(--space-md);
    text-align: justify;
}

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

.feature-visual {
    position: sticky;
    top: 100px;
}

.feature-canvas {
    width: 100%;
    height: 320px;
    border-radius: var(--radius-lg);
    background: white;
    box-shadow: var(--shadow-md);
    display: block;
}

.visual-caption {
    margin-top: var(--space-sm);
    font-size: 0.8rem;
    color: var(--color-warm-gray);
    line-height: 1.7;
    font-weight: 300;
    padding: 0 4px;
}

.visual-caption strong {
    color: var(--color-baroque-dark);
    font-weight: 600;
}

/* ===== 建筑专论区 ===== */
.architecture-section {
    padding: var(--space-2xl) var(--space-md);
    background: white;
}

.arch-intro {
    max-width: 800px;
    margin: 0 auto var(--space-xl);
}

.arch-intro p {
    font-size: 1rem;
    line-height: 2.1;
    color: var(--color-dark);
    text-align: justify;
}

.arch-intro strong {
    color: var(--color-baroque-dark);
    font-weight: 600;
}

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

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

.arch-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);
}

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

.arch-visual {
    width: 100%;
    height: 220px;
    background: linear-gradient(135deg, #F5EDE3, #E8DDD0);
    position: relative;
    overflow: hidden;
}

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

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

.arch-content h4 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 4px;
    letter-spacing: 1px;
}

.arch-meta {
    font-size: 0.75rem;
    color: var(--color-baroque-primary);
    margin-bottom: var(--space-sm);
    font-weight: 500;
}

.arch-content p {
    font-size: 0.85rem;
    line-height: 1.8;
    color: var(--color-warm-gray);
    font-weight: 300;
}

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

.masters-timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    padding: var(--space-lg) 0;
}

.timeline-track {
    position: relative;
    padding-left: 40px;
}

.timeline-track::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-baroque-gold), var(--color-baroque-primary), var(--color-baroque-dark));
}

.timeline-node {
    position: relative;
    margin-bottom: var(--space-lg);
    padding-left: var(--space-md);
}

.timeline-node:last-child {
    margin-bottom: 0;
}

.node-dot {
    position: absolute;
    left: -34px;
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-baroque-gold);
    border: 3px solid white;
    box-shadow: 0 0 0 2px var(--color-baroque-gold);
    z-index: 1;
}

.node-card {
    background: white;
    border-radius: var(--radius-md);
    padding: var(--space-md);
    border: 1px solid rgba(30, 30, 36, 0.04);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-fast);
}

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

.node-year {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-baroque-primary);
    letter-spacing: 1px;
    margin-bottom: 6px;
    font-weight: 500;
}

.node-card h4 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 4px;
    letter-spacing: 1px;
}

.node-role {
    font-size: 0.8rem;
    color: var(--color-baroque-primary);
    font-weight: 500;
    margin-bottom: var(--space-sm);
}

.node-desc {
    font-size: 0.88rem;
    line-height: 1.8;
    color: var(--color-warm-gray);
    font-weight: 300;
}

/* ===== 中西对照区 ===== */
.comparison-section {
    padding: var(--space-2xl) var(--space-md);
    background: white;
}

.comparison-body {
    max-width: 800px;
    margin: 0 auto var(--space-xl);
}

.comparison-body p {
    font-size: 1rem;
    line-height: 2.1;
    color: var(--color-dark);
    text-align: justify;
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    max-width: 1000px;
    margin: 0 auto var(--space-xl);
}

@media (max-width: 768px) {
    .comparison-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

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

.comp-col h4 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-md);
    letter-spacing: 1px;
    text-align: center;
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-baroque-gold);
}

.comp-item {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(30, 30, 36, 0.04);
}

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

.comp-item strong {
    display: block;
    font-size: 0.9rem;
    color: var(--color-baroque-dark);
    margin-bottom: 4px;
    font-weight: 600;
}

.comp-item p {
    font-size: 0.85rem;
    line-height: 1.8;
    color: var(--color-warm-gray);
    font-weight: 300;
}

.comparison-synthesis {
    max-width: 800px;
    margin: 0 auto;
    background: linear-gradient(135deg, var(--color-baroque-dark), #4a2e1a);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    color: white;
}

.comparison-synthesis p {
    font-size: 0.95rem;
    line-height: 2;
    font-weight: 300;
}

.comparison-synthesis strong {
    color: var(--color-baroque-gold);
    font-weight: 600;
}

/* ===== 影响与遗产区 ===== */
.legacy-section {
    padding: var(--space-2xl) var(--space-md);
    background: var(--color-cream);
}

.legacy-body {
    max-width: 800px;
    margin: 0 auto var(--space-xl);
}

.legacy-body p {
    font-size: 1rem;
    line-height: 2.1;
    color: var(--color-dark);
    text-align: justify;
}

.legacy-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    max-width: 1000px;
    margin: 0 auto;
}

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

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

.legacy-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;
}

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

.legacy-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-baroque-light), var(--color-baroque-primary));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-sm);
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: white;
}

.legacy-card h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: var(--space-sm);
    letter-spacing: 1px;
}

.legacy-card p {
    font-size: 0.85rem;
    line-height: 1.8;
    color: var(--color-warm-gray);
    font-weight: 300;
}

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

.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: var(--color-cream);
    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);
    background: white;
}

.reading-cover {
    width: 70px;
    height: 95px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--color-baroque-light), var(--color-baroque-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    text-align: center;
    padding: 6px;
    flex-shrink: 0;
    line-height: 1.5;
}

.reading-info h4 {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 4px;
    letter-spacing: 0.5px;
    line-height: 1.4;
}

.reading-author {
    font-size: 0.78rem;
    color: var(--color-baroque-primary);
    margin-bottom: 8px;
    font-weight: 500;
}

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

/* ===== CTA 区 ===== */
.cta-section.baroque-cta {
    padding: var(--space-2xl) var(--space-md);
    background: linear-gradient(135deg, var(--color-baroque-dark), #3d2317, var(--color-baroque-primary), #5C3A21);
    background-size: 400% 400%;
    animation: baroque-gradient 15s ease infinite;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.cta-section.baroque-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");
}

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

.cta-section.baroque-cta .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;
    color: white;
}

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

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

@media (max-width: 768px) {
    .cta-section.baroque-cta .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    .cta-section.baroque-cta .cta-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
}

/* ===== 响应式补充 ===== */
@media (max-width: 768px) {
    .hero-title {
        letter-spacing: 8px;
    }

    .intro-sidebar {
        position: static;
    }

    .feature-canvas {
        height: 260px;
    }

    .arch-visual {
        height: 180px;
    }

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

    .timeline-track {
        padding-left: 30px;
    }

    .node-dot {
        left: -26px;
        width: 12px;
        height: 12px;
    }

    .section-container {
        padding: 0 var(--space-sm);
    }
}

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