:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #0891b2;
    --accent: #f59e0b;
    --success: #10b981;
    --danger: #ef4444;
    --dark: #0f172a;
    --gray-900: #1e293b;
    --gray-800: #334155;
    --gray-700: #475569;
    --gray-600: #64748b;
    --gray-500: #94a3b8;
    --gray-400: #cbd5e1;
    --gray-300: #e2e8f0;
    --gray-200: #f1f5f9;
    --gray-100: #f8fafc;
    --white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #0891b2 100%);
    --gradient-accent: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #0891b2 100%);
    --gradient-dark: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--gray-100);
    color: var(--gray-800);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Hero Section */
.hero {
    background: var(--gradient-dark);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 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='0.03'%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");
    opacity: 0.5;
}

.hero-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 120px 24px 80px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 14px;
    color: var(--gray-300);
    margin-bottom: 32px;
    animation: fadeInDown 0.8s ease;
}

.hero-badge i {
    color: var(--accent);
}

.update-timer {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(16, 185, 129, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(16, 185, 129, 0.3);
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 14px;
    color: #6ee7b7;
    margin-bottom: 24px;
    animation: fadeInDown 0.8s ease 0.1s both;
}

.update-timer i {
    color: #10b981;
}

.update-timer strong {
    color: #fff;
    font-weight: 600;
}

/* China Medical Excellence Banner */
.excellence-banner {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #0f172a 100%);
    padding: 60px 24px;
    position: relative;
    overflow: hidden;
}

.excellence-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 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='0.03'%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");
}

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

.excellence-header {
    text-align: center;
    margin-bottom: 40px;
}

.excellence-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    color: white;
    margin-bottom: 16px;
}

.excellence-header h2 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 800;
    color: white;
    margin-bottom: 12px;
}

.excellence-header p {
    font-size: 1.1rem;
    color: #94a3b8;
}

.excellence-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

@media (max-width: 992px) {
    .excellence-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .excellence-grid {
        grid-template-columns: 1fr;
    }
}

.excellence-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 24px;
    text-align: center;
    transition: all 0.3s ease;
}

.excellence-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-4px);
    border-color: rgba(245, 158, 11, 0.3);
}

.excellence-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.5rem;
    color: white;
}

.excellence-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: white;
    margin-bottom: 8px;
}

.excellence-stat {
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.excellence-card p {
    font-size: 13px;
    color: #94a3b8;
    line-height: 1.5;
}

.excellence-footer {
    text-align: center;
}

.excellence-note {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    padding: 12px 24px;
    border-radius: 50px;
    font-size: 14px;
    color: #6ee7b7;
}

.excellence-note i {
    color: #10b981;
    font-size: 1.25rem;
}

.excellence-note strong {
    color: white;
}

/* TCM Excellence Section */
.tcm-section {
    background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%);
}

.tcm-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 32px;
    font-size: 1.1rem;
    color: var(--gray-600);
}

.tcm-intro strong {
    color: var(--success);
}

.tcm-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

@media (max-width: 992px) {
    .tcm-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .tcm-grid {
        grid-template-columns: 1fr;
    }
}

.tcm-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(16, 185, 129, 0.1);
    transition: all 0.3s ease;
}

.tcm-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(16, 185, 129, 0.3);
}

.tcm-card-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.tcm-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, #059669 0%, #10b981 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.tcm-card-header h3 {
    flex: 1;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-800);
}

.evidence-badge {
    font-size: 11px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
}

.evidence-badge.high {
    background: rgba(16, 185, 129, 0.15);
    color: #059669;
}

.evidence-badge.medium {
    background: rgba(245, 158, 11, 0.15);
    color: #d97706;
}

.tcm-conditions {
    margin-bottom: 16px;
}

.condition-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--gray-700);
    padding: 6px 0;
    border-bottom: 1px dashed var(--gray-200);
}

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

.condition-item i {
    color: var(--success);
    font-size: 10px;
}

.tcm-stats {
    display: flex;
    gap: 16px;
    padding-top: 12px;
    border-top: 1px solid var(--gray-200);
}

.tcm-stat {
    flex: 1;
    text-align: center;
}

.tcm-stat strong {
    display: block;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--success);
}

.tcm-stat span {
    font-size: 11px;
    color: var(--gray-500);
}

.tcm-footer {
    margin-top: 24px;
    text-align: center;
}

.tcm-source {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--gray-500);
    background: white;
    padding: 10px 20px;
    border-radius: 50px;
    box-shadow: var(--shadow-sm);
}

.tcm-source i {
    color: var(--success);
}

/* Global Comparison Tables */
.comparison-section {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
}

.comparison-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.comparison-title i {
    color: var(--primary);
}

.comparison-table-wrapper {
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.comparison-table th,
.comparison-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.comparison-table th {
    background: var(--gray-100);
    font-weight: 600;
    color: var(--gray-700);
    white-space: nowrap;
}

.comparison-table th:first-child {
    border-radius: 8px 0 0 0;
}

.comparison-table th:last-child {
    border-radius: 0 8px 0 0;
}

.comparison-table td:first-child {
    font-weight: 500;
    color: var(--gray-800);
}

.comparison-table td.highlight {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(37, 99, 235, 0.1) 100%);
    color: var(--success);
    font-weight: 700;
}

.comparison-table tbody tr:hover {
    background: var(--gray-50);
}

.table-note {
    margin-top: 16px;
    padding: 12px 16px;
    background: var(--gray-100);
    border-radius: var(--radius);
    font-size: 13px;
    color: var(--gray-600);
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.table-note i {
    color: var(--primary);
    margin-top: 2px;
}

.savings-summary {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 24px;
}

@media (max-width: 768px) {
    .savings-summary {
        grid-template-columns: repeat(2, 1fr);
    }
}

.savings-card {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: var(--radius-lg);
    padding: 24px;
    color: white;
    display: flex;
    align-items: center;
    gap: 16px;
}

.savings-icon {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.savings-content h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.savings-content p {
    font-size: 13px;
    opacity: 0.9;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    color: var(--white);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero h1 span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: var(--gray-400);
    max-width: 700px;
    margin-bottom: 48px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    width: 100%;
    max-width: 1000px;
    animation: fadeInUp 0.8s ease 0.6s both;
}

@media (max-width: 768px) {
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

.stat-card {
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    padding: 28px 20px;
    transition: all 0.3s ease;
}

.stat-card:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-4px);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--gray-400);
    font-weight: 500;
}

.stat-change {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--success);
    margin-top: 8px;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 24px;
    transition: all 0.3s ease;
}

.nav.scrolled {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-lg);
}

.nav-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--white);
    text-decoration: none;
}

.nav-logo i {
    font-size: 1.5rem;
    color: var(--primary-light);
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--white);
}

/* Language Switch Button */
.lang-switch {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 50px;
    color: var(--gray-300);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.lang-switch:hover {
    background: rgba(255,255,255,0.2);
    color: var(--white);
}

.lang-switch i {
    font-size: 16px;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--gray-500);
    font-size: 13px;
    animation: bounce 2s infinite;
}

.scroll-indicator i {
    font-size: 20px;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Main Content */
.main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 80px 24px;
}

/* Section Styles */
.section {
    margin-bottom: 80px;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 40px;
}

.section-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius);
    color: var(--white);
    font-size: 24px;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark);
}

.section-subtitle {
    font-size: 15px;
    color: var(--gray-600);
    margin-top: 4px;
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--gray-200);
}

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

.card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    font-size: 20px;
}

.card-icon.russia { background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%); color: white; }
.card-icon.hongkong { background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%); color: white; }
.card-icon.sea { background: linear-gradient(135deg, #10b981 0%, #059669 100%); color: white; }
.card-icon.dental { background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%); color: white; }
.card-icon.tcm { background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%); color: white; }
.card-icon.checkup { background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%); color: white; }

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark);
}

.card-meta {
    font-size: 13px;
    color: var(--gray-500);
}

.card-stats {
    display: flex;
    gap: 24px;
    margin-bottom: 16px;
}

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

.card-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.card-stat-label {
    font-size: 12px;
    color: var(--gray-500);
}

.card-content {
    color: var(--gray-700);
    font-size: 15px;
    line-height: 1.7;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--gray-100);
    border-radius: 50px;
    font-size: 13px;
    color: var(--gray-700);
}

.tag i {
    font-size: 12px;
    color: var(--gray-500);
}

/* Cases Section */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.case-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--gray-200);
}

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

.case-header {
    background: var(--gradient-primary);
    padding: 24px;
    color: var(--white);
}

.case-patient {
    display: flex;
    align-items: center;
    gap: 16px;
}

.case-avatar {
    width: 56px;
    height: 56px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.case-name {
    font-size: 1.25rem;
    font-weight: 600;
}

.case-origin {
    font-size: 14px;
    opacity: 0.9;
}

.case-body {
    padding: 24px;
}

.case-symptom {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--gray-100);
    border-radius: var(--radius);
    margin-bottom: 16px;
}

.case-symptom i {
    color: var(--danger);
}

.case-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.comparison-item {
    padding: 16px;
    border-radius: var(--radius);
    text-align: center;
}

.comparison-item.before {
    background: #fef2f2;
    border: 1px solid #fecaca;
}

.comparison-item.after {
    background: #ecfdf5;
    border: 1px solid #a7f3d0;
}

.comparison-label {
    font-size: 12px;
    color: var(--gray-600);
    margin-bottom: 8px;
}

.comparison-value {
    font-size: 1.1rem;
    font-weight: 600;
}

.comparison-item.before .comparison-value {
    color: var(--danger);
}

.comparison-item.after .comparison-value {
    color: var(--success);
}

.case-result {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
    border-radius: var(--radius);
    color: #065f46;
}

.case-result i {
    font-size: 20px;
    color: var(--success);
}

.case-source {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    padding: 8px 14px;
    background: var(--gray-100);
    border-radius: 50px;
    font-size: 13px;
    color: var(--primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.case-source:hover {
    background: var(--primary);
    color: var(--white);
}

.case-source i {
    font-size: 12px;
}

/* Social Media Section */
.social-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.social-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
    transition: all 0.3s ease;
}

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

.social-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.social-platform {
    display: flex;
    align-items: center;
    gap: 12px;
}

.social-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    font-size: 20px;
    color: var(--white);
}

.social-icon.tiktok { background: #000000; }
.social-icon.youtube { background: #ff0000; }
.social-icon.xiaohongshu { background: #fe2c55; }
.social-icon.bilibili { background: #00a1d6; }
.social-icon.twitter { background: #1da1f2; }
.social-icon.instagram { background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888); }

.social-name {
    font-weight: 600;
    color: var(--dark);
}

.social-type {
    font-size: 13px;
    color: var(--gray-500);
}

.social-badge {
    padding: 4px 10px;
    background: var(--gray-100);
    border-radius: 50px;
    font-size: 12px;
    color: var(--gray-600);
}

.social-content {
    margin-bottom: 16px;
}

.social-hashtags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.hashtag {
    padding: 4px 10px;
    background: var(--primary);
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--white);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 500;
}

.social-examples {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.6;
}

/* Viral Videos */
.viral-section {
    background: var(--gradient-dark);
    border-radius: var(--radius-xl);
    padding: 48px;
    margin-top: 40px;
}

.viral-title {
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.viral-title i {
    color: var(--accent);
}

.viral-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.viral-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius);
    padding: 20px;
    transition: all 0.3s ease;
}

.viral-card:hover {
    background: rgba(255,255,255,0.1);
}

.viral-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.viral-platform {
    padding: 4px 10px;
    background: rgba(255,255,255,0.1);
    border-radius: 50px;
    font-size: 12px;
    color: var(--gray-300);
}

.viral-views {
    font-size: 13px;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 6px;
}

.viral-quote {
    color: var(--gray-300);
    font-size: 15px;
    line-height: 1.6;
    font-style: italic;
}

.viral-author {
    margin-top: 12px;
    font-size: 13px;
    color: var(--gray-500);
}

/* Policy Section */
.policy-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
}

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

.policy-main {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}

.policy-item {
    display: flex;
    gap: 16px;
    padding: 20px 0;
    border-bottom: 1px solid var(--gray-200);
}

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

.policy-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border-radius: var(--radius);
    color: var(--primary);
    flex-shrink: 0;
}

.policy-content h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.policy-content p {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.6;
}

.policy-sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.concern-card {
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: var(--radius-lg);
    padding: 24px;
}

.concern-card h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    font-weight: 600;
    color: #991b1b;
    margin-bottom: 16px;
}

.concern-card ul {
    list-style: none;
    font-size: 14px;
    color: #7f1d1d;
}

.concern-card li {
    padding: 8px 0;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.concern-card li i {
    color: #ef4444;
    margin-top: 4px;
}

.positive-card {
    background: #ecfdf5;
    border: 1px solid #a7f3d0;
    border-radius: var(--radius-lg);
    padding: 24px;
}

.positive-card h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    font-weight: 600;
    color: #065f46;
    margin-bottom: 16px;
}

.positive-card ul {
    list-style: none;
    font-size: 14px;
    color: #064e3b;
}

.positive-card li {
    padding: 8px 0;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.positive-card li i {
    color: #10b981;
    margin-top: 4px;
}

/* Chart Section */
.chart-section {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
    margin-bottom: 40px;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.chart-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark);
}

.chart-container {
    position: relative;
    height: 300px;
}

/* Sources Section */
.sources-section {
    background: var(--gray-900);
    border-radius: var(--radius-xl);
    padding: 48px;
    color: var(--white);
}

.sources-header {
    text-align: center;
    margin-bottom: 40px;
}

.sources-header h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.sources-header p {
    color: var(--gray-400);
}

.sources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.source-category {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius);
    padding: 24px;
}

.source-category h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.source-category h4 i {
    color: var(--primary-light);
}

.source-list {
    list-style: none;
}

.source-list li {
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.source-list li:last-child {
    border-bottom: none;
}

.source-list a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color 0.3s ease;
}

.source-list a:hover {
    color: var(--white);
}

.source-list a i {
    font-size: 12px;
}

/* Footer */
.footer {
    background: var(--dark);
    padding: 48px 24px;
    text-align: center;
    color: var(--gray-500);
}

.footer-content {
    max-width: 600px;
    margin: 0 auto;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.footer-logo i {
    color: var(--primary-light);
}

.footer p {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 24px;
}

.footer-meta {
    font-size: 13px;
    color: var(--gray-600);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Cost Comparison Table */
.cost-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.cost-table th,
.cost-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.cost-table th {
    background: var(--gray-100);
    font-weight: 600;
    color: var(--dark);
    font-size: 14px;
}

.cost-table td {
    font-size: 14px;
    color: var(--gray-700);
}

.cost-table tr:hover {
    background: var(--gray-50);
}

.cost-china {
    color: var(--success);
    font-weight: 600;
}

.cost-us {
    color: var(--danger);
    font-weight: 600;
}

.savings-badge {
    display: inline-block;
    padding: 4px 10px;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
}

/* Ontology / Knowledge Graph Section */
.ontology-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
}

@media (max-width: 1024px) {
    .ontology-container {
        grid-template-columns: 1fr;
    }
}

.ontology-graph {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
    position: relative;
}

#knowledgeGraph {
    width: 100%;
    height: 500px;
    border-radius: var(--radius);
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.graph-controls {
    position: absolute;
    bottom: 24px;
    right: 24px;
    display: flex;
    gap: 8px;
}

.graph-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: 50px;
    font-size: 13px;
    color: var(--gray-700);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.graph-btn:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.ontology-legend {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}

.ontology-legend h4 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 16px;
}

.ontology-legend h4 i {
    color: var(--primary);
}

.entity-types {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.entity-type {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.entity-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 2px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.entity-type strong {
    display: block;
    font-size: 13px;
    color: var(--dark);
}

.entity-type small {
    font-size: 11px;
    color: var(--gray-500);
}

.relation-types {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.relation-tag {
    padding: 4px 10px;
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    border-radius: 50px;
    font-size: 12px;
    color: var(--gray-600);
}

/* Map Section */
.map-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}

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

.map-wrapper {
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--gray-100);
}

.map-legend {
    padding: 16px;
}

.map-legend h4 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 20px;
}

.map-legend h4 i {
    color: var(--primary);
}

.legend-items {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.legend-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 4px;
}

.legend-item strong {
    display: block;
    font-size: 14px;
    color: var(--dark);
    margin-bottom: 4px;
}

.legend-item p {
    font-size: 12px;
    color: var(--gray-600);
    line-height: 1.5;
}

/* Keywords Section */
.keywords-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

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

.keyword-chart-wrapper {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
    height: 400px;
}

.keyword-cloud {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}

.cloud-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 20px;
    text-align: center;
}

.word-cloud {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 12px;
    min-height: 300px;
    padding: 16px;
}

.word {
    font-weight: 600;
    cursor: default;
    transition: transform 0.3s ease, opacity 0.3s ease;
    opacity: 0.85;
}

.word:hover {
    transform: scale(1.1);
    opacity: 1;
}

/* ===== Source Citation System ===== */

/* Source badge - inline citation marker */
.source-cite {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    cursor: pointer;
    transition: all 0.2s ease;
    vertical-align: super;
    text-decoration: none;
    margin-left: 4px;
}

.source-cite:hover {
    background: var(--primary);
    color: white;
    transform: scale(1.05);
}

.source-cite i {
    font-size: 0.6rem;
}

/* Source type badges */
.source-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: 20px;
    margin: 2px;
}

.source-badge.official { background: rgba(16, 185, 129, 0.15); color: #059669; }
.source-badge.academic { background: rgba(139, 92, 246, 0.15); color: #7c3aed; }
.source-badge.mainstream { background: rgba(59, 130, 246, 0.15); color: #2563eb; }
.source-badge.industry { background: rgba(245, 158, 11, 0.15); color: #d97706; }
.source-badge.international { background: rgba(6, 182, 212, 0.15); color: #0891b2; }
.source-badge.hospital { background: rgba(236, 72, 153, 0.15); color: #db2777; }

/* Trust indicator */
.trust-level {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    margin-left: 8px;
}

.trust-star {
    color: #f59e0b;
    font-size: 0.65rem;
}

.trust-star.empty {
    color: #e2e8f0;
}

/* Data methodology banner */
.methodology-banner {
    background: linear-gradient(135deg, #f0fdf4 0%, #ecfeff 100%);
    border: 1px solid #a7f3d0;
    border-radius: var(--radius);
    padding: 16px 24px;
    margin: 24px 0;
    display: flex;
    align-items: center;
    gap: 16px;
}

.methodology-banner i {
    font-size: 1.5rem;
    color: #10b981;
}

.methodology-banner .content {
    flex: 1;
}

.methodology-banner h4 {
    font-size: 0.95rem;
    color: #065f46;
    margin-bottom: 4px;
}

.methodology-banner p {
    font-size: 0.85rem;
    color: #047857;
    margin: 0;
}

.methodology-banner .trust-indicators {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* Source tooltip */
.source-tooltip {
    position: relative;
}

.source-tooltip .tooltip-content {
    visibility: hidden;
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gray-900);
    color: white;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.8rem;
    white-space: nowrap;
    z-index: 1000;
    opacity: 0;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-lg);
    max-width: 300px;
    white-space: normal;
}

.source-tooltip .tooltip-content::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--gray-900);
}

.source-tooltip:hover .tooltip-content {
    visibility: visible;
    opacity: 1;
    bottom: calc(100% + 8px);
}

.tooltip-source-type {
    font-size: 0.7rem;
    opacity: 0.8;
    margin-bottom: 4px;
}

.tooltip-source-name {
    font-weight: 600;
    margin-bottom: 4px;
}

.tooltip-source-date {
    font-size: 0.7rem;
    opacity: 0.7;
}

/* Source reference section */
.source-references {
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin-top: 48px;
}

.source-references h3 {
    font-size: 1.25rem;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.source-references h3 i {
    color: var(--primary);
}

.reference-list {
    display: grid;
    gap: 12px;
}

.reference-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 16px;
    background: white;
    border-radius: 8px;
    border: 1px solid var(--gray-200);
    transition: all 0.2s ease;
}

.reference-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.reference-number {
    background: var(--primary);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    flex-shrink: 0;
}

.reference-content {
    flex: 1;
}

.reference-title {
    font-weight: 500;
    color: var(--gray-800);
    margin-bottom: 4px;
}

.reference-meta {
    font-size: 0.8rem;
    color: var(--gray-500);
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.reference-meta a {
    color: var(--primary);
    text-decoration: none;
}

.reference-meta a:hover {
    text-decoration: underline;
}

/* Responsive Adjustments */
@media (max-width: 640px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .stat-value {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .cards-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }

    .viral-section {
        padding: 24px;
    }

    .sources-section {
        padding: 24px;
    }

    .methodology-banner {
        flex-direction: column;
        text-align: center;
    }

    .source-tooltip .tooltip-content {
        left: 0;
        transform: none;
        max-width: 250px;
    }
}