* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #667eea;
    --primary-dark: #5a6fd8;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --text-color: #2d3748;
    --text-light: #4a5568;
    --text-muted: #718096;
    --background-color: #f7fafc;
    --card-background: #ffffff;
    --border-color: #e2e8f0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-4: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--background-color);
    overflow-x: hidden;
}

/* Hero Background */
.hero-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: linear-gradient(-45deg, #667eea, #764ba2, #f093fb, #4facfe);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    z-index: -1;
    opacity: 0.1;
}

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

.container {
    width: 100%;
    margin: 0;
    padding: 0;
    background: var(--card-background);
    min-height: 100vh;
    position: relative;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    position: relative;
    overflow: hidden;
    padding: 80px 40px;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="a" cx="50%" cy="50%" r="50%"><stop offset="0%" style="stop-color:rgba(102,126,234,0.1)"/><stop offset="100%" style="stop-color:rgba(102,126,234,0)"/></radialGradient></defs><circle cx="20%" cy="20%" r="200" fill="url(%23a)"/><circle cx="80%" cy="80%" r="250" fill="url(%23a)"/><circle cx="40%" cy="90%" r="180" fill="url(%23a)"/></svg>') no-repeat center;
    background-size: cover;
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(1deg); }
    66% { transform: translateY(10px) rotate(-1deg); }
}

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

.title-animation h1 {
    font-family: 'Playfair Display', serif;
    font-size: 4.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -2px;
    animation: slideUp 1.2s ease-out;
}

.highlight-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.highlight-text::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-1);
    border-radius: 2px;
    animation: expandWidth 1.5s ease-out 0.5s both;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes expandWidth {
    from { width: 0; }
    to { width: 100%; }
}

.subtitle-wrapper {
    position: relative;
    margin-bottom: 40px;
    animation: slideUp 1.2s ease-out 0.3s both;
}

.subtitle {
    font-size: 1.5rem;
    color: var(--text-light);
    margin-bottom: 15px;
    font-weight: 400;
    line-height: 1.4;
    max-width: 800px;
    margin: 0 auto 15px;
}

.subtitle-decoration {
    width: 100px;
    height: 2px;
    background: var(--gradient-2);
    margin: 0 auto;
    border-radius: 1px;
}

.authors {
    margin-bottom: 50px;
    animation: slideUp 1.2s ease-out 0.6s both;
}

.author-card {
    display: inline-flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.9);
    padding: 15px 25px;
    border-radius: 50px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.author-card i {
    margin-right: 10px;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.author {
    font-size: 1.1rem;
    color: var(--text-color);
    font-weight: 500;
}

.links {
    display: flex;
    justify-content: center;
    gap: 25px;
    flex-wrap: wrap;
    margin-bottom: 80px;
    animation: slideUp 1.2s ease-out 0.9s both;
}

.btn-primary, .btn-secondary, .btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: var(--gradient-2);
    color: white;
    box-shadow: 0 10px 30px rgba(240, 147, 251, 0.3);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.1);
}

.btn-primary:hover, .btn-secondary:hover, .btn-outline:hover {
    transform: translateY(-8px) scale(1.08);
}

.btn-primary:active, .btn-secondary:active, .btn-outline:active {
    transform: translateY(-2px) scale(1.02);
    transition: all 0.1s ease;
}

.btn-primary:hover {
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.4);
}

.btn-secondary:hover {
    box-shadow: 0 20px 40px rgba(240, 147, 251, 0.4);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.3);
}

.btn-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s;
}

.btn-primary:hover .btn-shine,
.btn-secondary:hover .btn-shine,
.btn-outline:hover .btn-shine {
    left: 100%;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--text-muted);
    animation: bounce 2s infinite;
    cursor: pointer;
    transition: all 0.3s ease;
}

.scroll-indicator:hover {
    color: var(--primary-color);
    transform: translateX(-50%) scale(1.1);
}

.scroll-text {
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.scroll-arrow {
    font-size: 1.2rem;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* Progress Bar */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.progress-fill {
    height: 100%;
    background: var(--gradient-1);
    width: 0%;
    transition: width 0.1s ease-out;
    border-radius: 0 2px 2px 0;
    box-shadow: 0 0 10px rgba(102, 126, 234, 0.5);
}

/* Floating Elements */
.floating-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    opacity: 0.6;
}

.floating-element {
    position: absolute;
    width: 80px;
    height: 80px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.05) 50%, transparent 100%);
    border-radius: 50%;
    animation: floatAnimation 8s ease-in-out infinite;
    backdrop-filter: blur(1px);
}

.floating-element:nth-child(2) {
    width: 120px;
    height: 120px;
    background: radial-gradient(circle, rgba(240, 147, 251, 0.1) 0%, rgba(79, 172, 254, 0.05) 50%, transparent 100%);
}

.floating-element:nth-child(3) {
    width: 60px;
    height: 60px;
    background: radial-gradient(circle, rgba(79, 172, 254, 0.1) 0%, rgba(0, 242, 254, 0.05) 50%, transparent 100%);
}

.floating-element:nth-child(4) {
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(67, 233, 123, 0.1) 0%, rgba(56, 249, 215, 0.05) 50%, transparent 100%);
}

@keyframes floatAnimation {
    0%, 100% {
        transform: translateY(0) translateX(0) rotate(0deg) scale(1);
    }
    25% {
        transform: translateY(-30px) translateX(20px) rotate(90deg) scale(1.1);
    }
    50% {
        transform: translateY(-15px) translateX(-20px) rotate(180deg) scale(0.9);
    }
    75% {
        transform: translateY(-45px) translateX(15px) rotate(270deg) scale(1.05);
    }
}

/* Sections */
section {
    padding: 100px 40px;
    position: relative;
    width: 100%;
    transition: transform 0.3s ease;
}

section:hover {
    transform: translateZ(0) scale(1.005);
}

.fade-in-section {
    opacity: 0;
    transform: translateY(50px) scale(0.95);
    filter: blur(5px);
    transition: all 1.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.fade-in-section.fade-in {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0px);
}

.fade-in-section:nth-child(even) {
    transform: translateY(50px) translateX(-30px) scale(0.95);
    filter: blur(5px);
}

.fade-in-section:nth-child(even).fade-in {
    transform: translateY(0) translateX(0) scale(1);
    filter: blur(0px);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 50px;
    position: relative;
}

.section-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-right: 15px;
}

.section-header h2 {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    color: var(--text-color);
    font-weight: 600;
    margin: 0;
}

.section-line {
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--gradient-1);
    border-radius: 1.5px;
    animation: expandLineWidth 0.8s ease-out 0.5s both;
}

@keyframes expandLineWidth {
    from { width: 0; }
    to { width: 80px; }
}

/* Abstract Section */
.abstract {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    padding: 80px 60px;
    margin: 0;
    position: relative;
    overflow: hidden;
}

.abstract::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(102,126,234,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(118,75,162,0.1)"/><circle cx="50" cy="10" r="1" fill="rgba(102,126,234,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.5;
}

.abstract-content {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
}

.abstract-highlight {
    display: inline-flex;
    align-items: center;
    background: var(--gradient-1);
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    margin-bottom: 30px;
    font-size: 0.9rem;
    font-weight: 600;
}

.abstract-highlight i {
    margin-right: 8px;
}

.abstract-para {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 30px;
    color: var(--text-color);
    position: relative;
    transition: all 0.3s ease;
}

.abstract-para:hover {
    transform: translateX(10px);
    color: var(--text-color);
}

.abstract-para::before {
    content: '';
    position: absolute;
    left: -20px;
    top: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-1);
    border-radius: 2px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.abstract-para:hover::before {
    opacity: 1;
}

.brand-highlight {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.dataset-components {
    display: flex;
    justify-content: space-around;
    margin: 40px 0;
    flex-wrap: wrap;
    gap: 20px;
}

.component-item {
    display: flex;
    align-items: center;
    background: white;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    flex: 1;
    min-width: 200px;
    transition: transform 0.3s ease;
}

.component-item:hover {
    transform: translateY(-5px);
}

.component-number {
    width: 40px;
    height: 40px;
    background: var(--gradient-1);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-right: 15px;
    flex-shrink: 0;
}

.component-text {
    font-weight: 600;
    color: var(--text-color);
}

.key-insights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.insight-item {
    display: flex;
    align-items: center;
    background: white;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.insight-item:hover {
    transform: translateY(-3px);
}

.insight-icon {
    font-size: 1.5rem;
    margin-right: 15px;
}

.insight-text {
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.95rem;
}

/* Highlight Cards */
.highlight-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.highlight-card {
    background: white;
    border-radius: 20px;
    padding: 40px 30px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.highlight-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-1);
    transition: all 0.3s ease;
}

.highlight-card.card-1::before { background: var(--gradient-1); }
.highlight-card.card-2::before { background: var(--gradient-2); }
.highlight-card.card-3::before { background: var(--gradient-3); }
.highlight-card.card-4::before { background: var(--gradient-4); }

.highlight-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.highlight-card:hover::before {
    height: 100%;
    opacity: 0.1;
}

.card-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-1);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    transition: transform 0.3s ease;
}

.card-1 .card-icon { background: var(--gradient-1); }
.card-2 .card-icon { background: var(--gradient-2); }
.card-3 .card-icon { background: var(--gradient-3); }
.card-4 .card-icon { background: var(--gradient-4); }

.card-icon i {
    font-size: 1.8rem;
    color: white;
}

.highlight-card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
}

.card-content h3 {
    font-size: 1.4rem;
    color: var(--text-color);
    margin-bottom: 15px;
    font-weight: 700;
}

.card-content p {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 20px;
}

.card-stats {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.stat-badge {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.card-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.highlight-card:hover .card-glow {
    opacity: 1;
}

/* Findings Section */
.findings-container {
    display: flex;
    flex-direction: column;
    gap: 50px;
    max-width: 1200px;
    margin: 0 auto;
}

.finding-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.finding-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 5px;
    height: 100%;
    background: var(--gradient-1);
}

.finding-1::before { background: var(--gradient-1); }
.finding-2::before { background: var(--gradient-2); }
.finding-3::before { background: var(--gradient-3); }

.finding-card:hover {
    transform: translateX(10px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
}

.finding-header {
    display: flex;
    align-items: center;
    margin-bottom: 25px;
}

.finding-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-1);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
}

.finding-1 .finding-icon { background: var(--gradient-1); }
.finding-2 .finding-icon { background: var(--gradient-2); }
.finding-3 .finding-icon { background: var(--gradient-3); }

.finding-icon i {
    font-size: 1.5rem;
    color: white;
}

.finding-header h3 {
    color: var(--text-color);
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
}

.finding-content p {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-light);
    margin-bottom: 25px;
}

.performance-chain {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.perf-item {
    background: var(--gradient-1);
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 700;
    font-size: 1rem;
    transition: transform 0.3s ease;
}

.perf-item:hover {
    transform: scale(1.1);
}

.perf-item.final {
    background: var(--gradient-2);
    transform: scale(1.1);
}

.arrow {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: bold;
}

.gap-visualization {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 15px;
    margin-top: 20px;
}

.gap-bar {
    width: 100%;
    height: 20px;
    background: #e2e8f0;
    border-radius: 10px;
    position: relative;
    overflow: hidden;
    margin-bottom: 15px;
}

.gap-fill {
    height: 100%;
    background: var(--gradient-2);
    border-radius: 10px;
    position: relative;
    animation: fillBar 2s ease-out;
}

@keyframes fillBar {
    from { width: 0 !important; }
}

.gap-label {
    position: absolute;
    top: 50%;
    right: 10px;
    transform: translateY(-50%);
    color: white;
    font-weight: 700;
    font-size: 0.9rem;
}

.gap-legend {
    display: flex;
    justify-content: space-between;
    font-weight: 600;
}

.legend-cn {
    color: var(--primary-color);
}

.legend-en {
    color: var(--text-muted);
}

.paradox-illustration {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.paradox-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.paradox-icon {
    font-size: 2rem;
}

.paradox-icon.up {
    color: #e53e3e;
}

.paradox-icon.down {
    color: #38a169;
}

.vs {
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: bold;
}

/* Dataset Info */
.dataset-container {
    background: linear-gradient(135deg, rgba(79, 172, 254, 0.05) 0%, rgba(0, 242, 254, 0.05) 100%);
    padding: 80px 60px;
    margin: 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto 60px;
}

.stat {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-3);
    transition: height 0.3s ease;
}

.stat:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.stat:hover::before {
    height: 100%;
    opacity: 0.1;
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-3);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: transform 0.3s ease;
}

.stat:hover .stat-icon {
    transform: scale(1.1) rotate(5deg);
}

.stat-icon i {
    font-size: 1.5rem;
    color: white;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-family: 'Playfair Display', serif;
    transition: all 0.3s ease;
}

.stat:hover .stat-number {
    transform: scale(1.1);
    text-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.stat-label {
    font-size: 1.1rem;
    color: var(--text-color);
    font-weight: 600;
    margin-bottom: 8px;
}

.stat-description {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.dataset-features {
    margin-top: 60px;
    max-width: 1200px;
    margin: 60px auto 0;
}

.dataset-features h3 {
    text-align: center;
    font-size: 1.8rem;
    color: var(--text-color);
    margin-bottom: 30px;
    font-family: 'Playfair Display', serif;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.feature-item {
    display: flex;
    align-items: center;
    background: white;
    padding: 20px 25px;
    border-radius: 50px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.feature-item i {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-right: 15px;
}

.feature-item span {
    font-weight: 600;
    color: var(--text-color);
}

/* Citation Section */
.citation {
    background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
    color: white;
    padding: 80px 0;
    margin: 0;
    position: relative;
    overflow: hidden;
}

.citation-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 60px;
}

.citation::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.citation .section-header h2 {
    color: white;
}

.citation .section-line {
    background: var(--gradient-1);
}

.citation-intro {
    text-align: center;
    margin-bottom: 40px;
}

.citation-intro p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
}

.bibtex-container {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 15px;
    overflow: hidden;
    margin-bottom: 40px;
    backdrop-filter: blur(10px);
}

.bibtex-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.bibtex-title {
    font-weight: 600;
    color: white;
}

.copy-button {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--gradient-1);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.copy-button:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.bibtex {
    padding: 25px;
    overflow-x: auto;
}

.bibtex code {
    color: #e2e8f0;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.95rem;
    line-height: 1.6;
    white-space: pre;
}

.contact-info {
    text-align: center;
    background: rgba(255, 255, 255, 0.05);
    padding: 30px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.contact-info h3 {
    color: white;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.contact-info p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1rem;
    line-height: 1.6;
}

/* Footer */
.main-footer {
    background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
    color: white;
    margin: 0;
    padding: 80px 60px 40px;
    position: relative;
    overflow: hidden;
}

.main-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="2" cy="2" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
    opacity: 0.3;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 60px;
    margin-bottom: 50px;
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto 50px;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: white;
    font-weight: 600;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.footer-links a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: white;
    transform: translateX(5px);
}

.footer-links i {
    width: 20px;
    font-size: 1rem;
}

.footer-brand h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.8rem;
    margin-bottom: 10px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-style: italic;
}

.footer-bottom {
    position: relative;
    z-index: 1;
}

.footer-divider {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    margin-bottom: 20px;
}

.footer-bottom p {
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95rem;
}

.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-1);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    transition: all 0.3s ease;
    z-index: 1000;
}

.scroll-to-top:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
}

.scroll-to-top i {
    font-size: 1.2rem;
}

/* Responsive Design */
@media (max-width: 1200px) {
    section {
        padding: 80px 30px;
    }

    .hero-section {
        padding: 60px 30px;
    }

    .abstract, .dataset-container {
        padding: 60px 40px;
    }

    .citation-content {
        padding: 0 40px;
    }

    .main-footer {
        padding: 60px 40px 30px;
    }
}

@media (max-width: 968px) {
    section {
        padding: 60px 20px;
    }

    .hero-section {
        padding: 40px 20px;
        min-height: 80vh;
    }

    .abstract, .dataset-container {
        padding: 40px 25px;
    }

    .citation-content {
        padding: 0 25px;
    }

    .main-footer {
        padding: 40px 25px 20px;
    }

    .title-animation h1 {
        font-size: 3rem;
    }

    .subtitle {
        font-size: 1.2rem;
    }

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

    .highlight-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }

    .dataset-components {
        flex-direction: column;
    }

    .performance-chain {
        flex-direction: column;
        gap: 10px;
    }

    .arrow {
        transform: rotate(90deg);
    }

    .paradox-illustration {
        flex-direction: column;
        gap: 15px;
    }

    .vs {
        transform: rotate(90deg);
    }
}

@media (max-width: 580px) {
    section {
        padding: 40px 15px;
    }

    .hero-section {
        padding: 30px 15px;
    }

    .abstract, .dataset-container {
        padding: 30px 20px;
    }

    .citation-content {
        padding: 0 20px;
    }

    .main-footer {
        padding: 30px 20px 15px;
    }

    .title-animation h1 {
        font-size: 2.5rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .highlight-card, .finding-card {
        padding: 25px 20px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }

    .scroll-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }

    .highlight-grid {
        gap: 25px;
    }

    .findings-container {
        gap: 30px;
    }
}