/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-weight: 400;
    line-height: 1.6;
    color: #374151;
    background-color: #ffffff;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
/* Header */
.header {
    background: #ffffff;
    padding: 15px 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid #e5e5e5;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}
.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}
.logo {
    z-index: 1001;
}
.logo h1 {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 2.5rem;
    font-weight: 800;
    color: #111827;
    font-style: normal;
    margin: 0;
    line-height: 1.1;
    letter-spacing: -0.02em;
}
.logo a {
    text-decoration: none;
    color: inherit;
}
.nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}
.nav-link {
    text-decoration: none;
    color: #1a1a1a;
    font-weight: 400;
    transition: color 0.3s ease;
}
.nav-link:hover,
.nav-link.active {
    color: #2c2c2c;
    font-weight: 600;
}
.contact-btn {
    background: #1a1a1a;
    color: white;
    padding: 12px 24px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: background 0.3s ease;
}
.contact-btn:hover {
    background: #2c2c2c;
}
/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #ffffff 0%, #f8f8f8 100%);
}
.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.donor-info {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 2rem;
    color: #2c2c2c;
    font-size: 0.9rem;
}
.avatars {
    display: flex;
    gap: -8px;
}
.avatars img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid white;
    margin-left: -8px;
}
.hero-title {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    color: #111827;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}
.hero-description {
    font-family: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 1.2rem;
    font-weight: 400;
    color: #6b7280;
    line-height: 1.6;
    margin-bottom: 2rem;
    max-width: 800px;
    text-align: left;
}

/* 针对courses页面的hero描述左对齐 */
.hero .hero-description {
    text-align: left;
}
.hero-image img {
    width: 100%;
    max-width: 400px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}
/* Global Perspective Section with Modern Hero Content */
.global-perspective {
    padding: 120px 0;
    background: white;
    text-align: center;
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.global-perspective .modern-hero-content {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3rem;
}

/* Name Section */
.hero-name {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin: 0;
    color: #111827;
    letter-spacing: -0.02em;
}

.name-first {
    color: #1a1a1a;
}

.name-highlight {
    color: #2563eb;
}

/* Profile Image Section */
.profile-image {
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center 0%;
    border: 4px solid #e2e8f0;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    transition: all 0.3s ease;
}

.profile-img:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
}

/* Description Section */
.hero-description {
    font-family: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 1.3rem;
    font-weight: 400;
    color: #6b7280;
    line-height: 1.7;
    margin: 0;
    max-width: 700px;
    text-align: center;
}

.hero-description strong {
    color: #1a1a1a;
    font-weight: 600;
}

/* Skill Tags Section */
.skill-tags {
    display: flex;
    justify-content: center;
    gap: 1.2rem;
    flex-wrap: wrap;
    margin: 0;
}

.skill-tag {
    background: #f7fafc;
    color: #2d3748;
    padding: 0.8rem 1.8rem;
    border-radius: 30px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.skill-tag:hover {
    background: #edf2f7;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Experience Metrics Section */
.experience-metrics {
    display: flex;
    justify-content: center;
    gap: 5rem;
    flex-wrap: wrap;
    margin: 0;
}

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

.experience-number {
    font-size: 3.5rem;
    font-weight: 700;
    color: #2563eb;
    line-height: 1;
    margin-bottom: 0.8rem;
    letter-spacing: -0.02em;
}

.experience-label {
    font-size: 1.1rem;
    color: #4a5568;
    font-weight: 500;
    letter-spacing: 0.01em;
}

/* Get In Touch Button Section */
.get-in-touch {
    margin: 0;
}

.get-in-touch-button {
    background: #2563eb;
    color: white;
    padding: 1.2rem 2.5rem;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
    letter-spacing: 0.01em;
}

.get-in-touch-button:hover {
    background: #1d4ed8;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
}

.button-icon {
    width: 16px;
    height: 16px;
    fill: none;
    stroke: white;
    stroke-width: 1.5;
}

/* Sections */
.learn-anytime, .team, .workspace, .pricing, .stats, .reviews, .faq, .cta {
    padding: 80px 0;
}
.section-title {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: #111827;
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
}
.features-grid, .benefits-grid, .team-grid, .pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}
.feature-item, .benefit-item, .team-member, .pricing-card {
    padding: 2rem;
    background: #f5f5f5;
    border-radius: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.feature-item:hover, .benefit-item:hover, .team-member:hover, .pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* Enhanced Why Choose Us Section */
.learn-anytime {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    position: relative;
    overflow: hidden;
}

.learn-anytime::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 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23e2e8f0" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
    z-index: 0;
}

.learn-anytime .container {
    position: relative;
    z-index: 1;
}

.learn-anytime .section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.learn-anytime .section-title {
    font-size: 3rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 1.5rem;
    position: relative;
    letter-spacing: -0.02em;
}

.learn-anytime .section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6, #10b981);
    border-radius: 2px;
}

.learn-anytime .section-description {
    font-size: 1.2rem;
    color: #64748b;
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
    font-weight: 400;
}

/* Enhanced Benefits Grid */
.learn-anytime .benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.learn-anytime .benefit-item {
    background: #ffffff;
    padding: 3rem 2.5rem;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid #e2e8f0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.learn-anytime .benefit-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6, #10b981);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.learn-anytime .benefit-item:hover::before {
    transform: scaleX(1);
}

.learn-anytime .benefit-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
    border-color: #cbd5e1;
}

.learn-anytime .benefit-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.3);
    transition: all 0.3s ease;
}

.learn-anytime .benefit-item:hover .benefit-number {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 12px 30px rgba(59, 130, 246, 0.4);
}

.learn-anytime .benefit-item h4 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 1.5rem;
    line-height: 1.3;
    letter-spacing: -0.01em;
}

.learn-anytime .benefit-item p {
    color: #64748b;
    line-height: 1.7;
    font-size: 1rem;
    margin: 0;
}

/* Benefit Icons */
.learn-anytime .benefit-icon {
    position: absolute;
    top: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #3b82f6;
    transition: all 0.3s ease;
    opacity: 0.8;
}

.learn-anytime .benefit-item:hover .benefit-icon {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    transform: scale(1.1) rotate(5deg);
    opacity: 1;
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.3);
}

.learn-anytime .benefit-icon svg {
    width: 32px;
    height: 32px;
    transition: all 0.3s ease;
}

.learn-anytime .benefit-item:hover .benefit-icon svg {
    transform: scale(1.1);
}
.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.feature-icon img {
    width: 40px;
    height: 40px;
}
.feature-item {
    text-align: center;
}
.feature-item h3 {
    font-size: 1.2rem;
    font-weight: 500;
    color: #1a1a1a;
    line-height: 1.4;
}
.benefit-number {
    display: inline-block;
    background: #2c2c2c;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    text-align: center;
    line-height: 40px;
    font-weight: 600;
    margin-bottom: 1rem;
}
.benefit-item h4, .team-member h4, .pricing-card h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 0.5rem;
}
.benefit-item p, .team-member p, .pricing-card p {
    color: #2c2c2c;
    line-height: 1.5;
    margin-bottom: 1rem;
}
.member-image {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    overflow: hidden;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
}
.member-image img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
}
.member-category {
    color: #666666;
    font-weight: 500;
    margin-bottom: 0.5rem;
}
.member-expertise {
    color: #2c2c2c;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}
.team-member {
    text-align: center;
}
.price {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2c2c2c;
    margin-bottom: 1rem;
}
.enroll-btn {
    background: #2c2c2c;
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.3s ease;
    width: 100%;
}
.enroll-btn:hover {
    background: #1a1a1a;
}
/* Card Actions */
.card-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}
.view-btn {
    background: transparent;
    color: #2c2c2c;
    border: 2px solid #2c2c2c;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    flex: 1;
    text-align: center;
    font-size: 0.9rem;
}
.view-btn:hover {
    background: #2c2c2c;
    color: white;
}
.enroll-btn {
    flex: 1;
}
.stats-grid .stat-item {
    background: white;
    text-align: center;
}
.stats-grid .stat-item h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c2c2c;
    margin-bottom: 0.5rem;
}
.review-carousel {
    overflow: hidden;
    max-width: 1000px;
    margin: 0 auto;
}
.review-track {
    display: flex;
    gap: 2rem;
    animation: scroll 20s linear infinite;
}
.review-card {
    min-width: 300px;
    background: #f5f5f5;
    padding: 2rem;
    border-radius: 15px;
    text-align: left;
}
.reviewer-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}
.reviewer-info img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}
.reviewer-info h5 {
    color: #1a1a1a;
    font-weight: 600;
}
.rating {
    display: flex;
    gap: 4px;
}
.rating img {
    width: 16px;
    height: 16px;
}
@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-100%); }
}
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}
.faq-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 1rem;
}
.faq-item h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 0.5rem;
    cursor: pointer;
}
.social-icons {
    display: flex;
    justify-content: center;
    gap: 1rem;
}
.social-icons img {
    width: 40px;
    height: 40px;
    transition: transform 0.3s ease;
}
.social-icons img:hover {
    transform: scale(1.1);
}
/* Layout Structure Styles */
.main-content {
    padding-top: 80px; /* Account for fixed header */
}
/* Navigation Active State */
.nav-link.active {
    color: #2c2c2c;
    font-weight: 600;
}
/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}
.section-header .section-title {
    font-size: 2.5rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 1rem;
}
.section-header .section-description {
    font-size: 1.1rem;
    color: #2c2c2c;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}
/* Footer Enhancements */
.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}
.footer-section h3 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}
.footer-section h4 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}
.footer-section p {
    color: #c8c8c6;
    line-height: 1.5;
    margin-bottom: 1rem;
}
.footer-links {
    list-style: none;
}
.footer-links li {
    margin-bottom: 0.5rem;
}
.footer-links a {
    color: #c8c8c6;
    text-decoration: none;
    transition: color 0.3s ease;
}
.footer-links a:hover {
    color: white;
}
.footer-bottom {
    border-top: 1px solid #2c2c2c;
    padding-top: 2rem;
    text-align: center;
}
.footer-bottom p {
    color: #c8c8c6;
    margin: 0;
    font-size: 0.85rem;
}
/* Course Categories */
.course-categories {
    padding: 40px 0;
    background: #f5f5f5;
    text-align: center;
}
.category-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}
.tab-btn {
    background: white;
    border: 2px solid #e5e5e5;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}
.tab-btn.active,
.tab-btn:hover {
    background: #2c2c2c;
    color: white;
    border-color: #2c2c2c;
}

/* Search Section */
.search-section {
    padding: 40px 0;
    background: #f5f5f5;
    text-align: center;
}
.search-bar {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}
.search-bar input {
    width: 300px;
    padding: 12px 20px;
    border-radius: 25px;
    border: 2px solid #e5e5e5;
    font-size: 1rem;
    transition: all 0.3s ease;
}
.search-bar input:focus {
    outline: none;
    border-color: #2c2c2c;
}
.search-bar button {
    background: #2563eb;
    color: white;
    padding: 1.2rem 2.5rem;
    border-radius: 25px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
    letter-spacing: 0.01em;
}
.search-bar button:hover {
    background: #1d4ed8;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
}

/* More Button */
.more-btn-container {
    text-align: center;
    margin-top: 2rem;
}
.more-btn {
    background: #2c2c2c;
    color: white;
    padding: 12px 24px;
    border-radius: 25px;
    border: none;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}
.more-btn:hover {
    background: #1a1a1a;
}

/* Pagination */
.pagination-container {
    text-align: center;
    margin-top: 2rem;
}
.pagination-btn {
    background: #2c2c2c;
    color: white;
    padding: 12px 24px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    margin: 0 0.5rem;
}
.pagination-btn:hover {
    background: #1a1a1a;
}
/* CTA Buttons */
.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}
.cta-btn {
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    display: inline-block;
}
.cta-btn.primary {
    background: #2c2c2c;
    color: white;
}
.cta-btn.primary:hover {
    background: #262d19;
}
.cta-btn.secondary {
    background: transparent;
    color: #2c2c2c;
    border: 2px solid #2c2c2c;
}
.cta-btn.secondary:hover {
    background: #2c2c2c;
    color: white;
}
/* Company Story */
.company-story {
    padding: 80px 0;
    background: white;
}
.story-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.story-timeline {
    margin-top: 2rem;
}
.timeline-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    position: relative;
}
.timeline-item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 30px;
    top: 60px;
    width: 2px;
    height: 40px;
    background: #2c2c2c;
}
.timeline-year {
    background: #2c2c2c;
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    flex-shrink: 0;
}
.timeline-content h4 {
    color: #1a1a1a;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}
.timeline-content p {
    color: #2c2c2c;
    line-height: 1.5;
}
.story-image img {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    object-fit: cover;
}
/* Team Member Enhancements */
.member-bio {
    font-size: 0.9rem;
    color: #2c2c2c;
    line-height: 1.5;
    margin-bottom: 1rem;
}
.member-social {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
}
.member-social a {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
}
.member-social a:hover {
    background: #2c2c2c;
}
.member-social img {
    width: 16px;
    height: 16px;
}
/* My Sharing Section */
.my-sharing {
    padding: 80px 0;
    background: white;
    text-align: center;
}
.sharing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}
.sharing-item {
    background: white;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.sharing-item-link {
    text-decoration: none;
    color: inherit;
    display: block;
    cursor: pointer;
}
.sharing-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6, #10b981);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}
.sharing-item:hover::before {
    transform: scaleX(1);
}
.sharing-item:hover,
.sharing-item-link:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
    border-color: #e5e7eb;
    text-decoration: none;
    color: inherit;
}
.sharing-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    border: 2px solid #e0f2fe;
}
.sharing-item:hover .sharing-icon,
.sharing-item-link:hover .sharing-icon {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    transform: scale(1.1) rotate(5deg);
    border-color: #3b82f6;
}
.sharing-icon svg {
    color: #3b82f6;
    transition: all 0.3s ease;
}
.sharing-item:hover .sharing-icon svg,
.sharing-item-link:hover .sharing-icon svg {
    color: white;
    transform: scale(1.1);
}
.sharing-item h4 {
    color: #1a1a1a;
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 600;
    line-height: 1.3;
}
.sharing-item p {
    color: #6b7280;
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}
.sharing-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}
.sharing-tag {
    background: #f0f9ff;
    color: #0369a1;
    padding: 0.4rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid #bae6fd;
    transition: all 0.3s ease;
}
.sharing-item:hover .sharing-tag,
.sharing-item-link:hover .sharing-tag {
    background: #3b82f6;
    color: white;
    border-color: #3b82f6;
    transform: translateY(-2px);
}

/* Sharing Image Styles */
.sharing-image {
    position: relative;
    height: 200px;
    overflow: hidden;
    border-radius: 20px 20px 0 0;
}

.sharing-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.sharing-item:hover .sharing-image img,
.sharing-item-link:hover .sharing-image img {
    transform: scale(1.05);
}


.sharing-content {
    padding: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* Awards Section (Legacy - keeping for reference) */
.awards {
    padding: 80px 0;
    background: white;
    text-align: center;
}
.awards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}
.award-item {
    background: #f5f5f5;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
}
.award-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.award-icon img {
    width: 40px;
    height: 40px;
}
.award-item h4 {
    color: #1a1a1a;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}
.award-item p {
    color: #2c2c2c;
    font-size: 0.9rem;
}
/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1002;
    position: relative;
}
.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: #1a1a1a;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}
.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}
.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}
.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* 移动端全屏导航菜单 - 新增 */
.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateY(-20px);
}

.mobile-nav-overlay.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mobile-nav-content {
    height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 20px;
}

.mobile-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    border-bottom: 1px solid #e5e5e5;
}

.mobile-logo h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: #1a1a1a;
    margin: 0;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.mobile-close-btn {
    background: none;
    border: none;
    width: 30px;
    height: 30px;
    position: relative;
    cursor: pointer;
    padding: 0;
}

.mobile-close-btn span {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 25px;
    height: 2px;
    background: #1a1a1a;
    transition: 0.3s;
}

.mobile-close-btn span:nth-child(1) {
    transform: translate(-50%, -50%) rotate(45deg);
}

.mobile-close-btn span:nth-child(2) {
    transform: translate(-50%, -50%) rotate(-45deg);
}

.mobile-nav-menu {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 40px 0;
}

.mobile-nav-link {
    padding: 20px 0;
    text-decoration: none;
    color: #1a1a1a;
    font-size: 1.5rem;
    font-weight: 500;
    border-bottom: 1px solid #f0f0f0;
    transition: all 0.3s ease;
    position: relative;
}

.mobile-nav-link:last-child {
    border-bottom: none;
}

.mobile-nav-link:hover {
    color: #2c2c2c;
    padding-left: 10px;
}

.mobile-nav-link.contact-link {
    background: #1a1a1a;
    color: white;
    border-radius: 25px;
    text-align: center;
    margin-top: 20px;
    border: none;
}

.mobile-nav-link.contact-link:hover {
    background: #2c2c2c;
    padding-left: 0;
}

/* Mobile Responsive Updates */
@media (max-width: 768px) {
    .story-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    .category-tabs {
        justify-content: center;
    }
    .tab-btn {
        font-size: 0.9rem;
        padding: 10px 20px;
    }
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    /* Search Section Mobile Optimization */
    .search-bar {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    .search-bar input {
        width: 100%;
        max-width: 300px;
    }
    .search-bar button {
        width: 100%;
        max-width: 300px;
        padding: 1rem 2rem;
    }
    .cta-btn {
        text-align: center;
        min-width: 200px;
    }
    .timeline-item {
        gap: 1rem;
    }
    .timeline-year {
        width: 50px;
        height: 50px;
        font-size: 0.9rem;
    }
    .mobile-menu-btn {
        display: flex;
    }
    .nav {
        display: none;
    }
    .awards-grid {
        grid-template-columns: 1fr;
    }
    
    .my-sharing .sharing-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        max-width: 100%;
    }
    
    .sharing-content {
        padding: 1.5rem;
    }
    
    .sharing-image {
        height: 150px;
    }
    
    
    .sharing-content h4 {
        font-size: 1.2rem;
    }
    
    .sharing-content p {
        font-size: 0.95rem;
    }

    /* 新增的移动端样式 */
    .header .container {
        padding: 0 20px;
    }
    
    /* 移动端logo样式 - 只显示Songran，避免换行 */
    .logo h1 {
        font-size: 2rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .logo h1 .name-first {
        display: none;
    }
}

@media (max-width: 480px) {
    .mobile-nav-link {
        font-size: 1.3rem;
        padding: 15px 0;
    }

    .mobile-nav-header {
        padding: 15px 0;
    }
}

/* Course Detail Page Styles */
.course-hero {
    background: linear-gradient(135deg, #f8f8f8 0%, #ffffff 100%);
    padding: 120px 0 60px;
}
.course-breadcrumb {
    margin-bottom: 2rem;
    font-size: 0.9rem;
}
.course-breadcrumb a {
    color: #2c2c2c;
    text-decoration: none;
}
.course-breadcrumb span {
    color: #666666;
    margin: 0 0.5rem;
}
.course-header {
    max-width: 800px;
}
.course-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}
.course-category,
.course-level,
.course-duration {
    background: #2c2c2c;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}
.course-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1a1a1a;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}
.course-subtitle {
    font-size: 1.2rem;
    color: #2c2c2c;
    line-height: 1.6;
    margin-bottom: 2rem;
}
.course-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1.5rem;
    max-width: 600px;
}
.stat-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.stat-icon {
    font-size: 1.5rem;
}
.stat-content {
    display: flex;
    flex-direction: column;
}
.stat-number {
    font-weight: 700;
    font-size: 1.1rem;
    color: #1a1a1a;
}
.stat-label {
    font-size: 0.85rem;
    color: #2c2c2c;
}
/* Course Content Layout */
.course-content {
    padding: 60px 0;
}
.content-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
}
.content-main {
    max-width: none;
}
.content-section {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #e5e5e5;
}
.content-section:last-child {
    border-bottom: none;
}
.content-section h2 {
    font-size: 2rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 1.5rem;
}
.content-section h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1a1a1a;
    margin: 2rem 0 1rem 0;
}
.course-image {
    margin: 2rem 0;
    border-radius: 15px;
    overflow: hidden;
}
.course-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}
.course-description p {
    font-size: 1.1rem;
    line-height: 1.7;
    color: #2c2c2c;
    margin-bottom: 1.5rem;
}
.feature-list {
    list-style: none;
    padding: 0;
}
.feature-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid #f0f0f0;
    color: #2c2c2c;
    line-height: 1.6;
}
.feature-list li:last-child {
    border-bottom: none;
}
.feature-list li strong {
    color: #1a1a1a;
}
/* Curriculum Styles */
.module-item {
    background: #f5f5f5;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 1rem;
}
.module-header {
    padding: 1.5rem;
    background: white;
    border-bottom: 1px solid #e5e5e5;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}
.module-header h3 {
    margin: 0;
    font-size: 1.2rem;
    color: #1a1a1a;
}
.module-duration {
    background: #2c2c2c;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
}
.module-content {
    padding: 1.5rem;
}
.lesson-list {
    list-style: none;
    padding: 0;
}
.lesson-list li {
    padding: 0.5rem 0;
    color: #2c2c2c;
    font-size: 0.95rem;
}
/* Learning Outcomes */
.outcomes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}
.outcome-item {
    background: #f5f5f5;
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
}
.outcome-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}
.outcome-item h4 {
    color: #1a1a1a;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}
.outcome-item p {
    color: #2c2c2c;
    font-size: 0.9rem;
    line-height: 1.5;
}
/* Reviews */
.reviews-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.review-item {
    background: #f5f5f5;
    padding: 2rem;
    border-radius: 15px;
}
.review-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}
.reviewer-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.reviewer-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}
.reviewer-details h4 {
    margin: 0;
    color: #1a1a1a;
    font-size: 1rem;
}
.reviewer-details span {
    color: #2c2c2c;
    font-size: 0.85rem;
}
.review-rating .stars {
    font-size: 0.9rem;
}
.review-text {
    color: #2c2c2c;
    line-height: 1.6;
    font-style: italic;
}
/* Sidebar Styles */
.content-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}
.sidebar-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    border: 1px solid #f0f0f0;
}
.sidebar-card h3 {
    margin: 0 0 1.5rem 0;
    color: #1a1a1a;
    font-size: 1.3rem;
}
/* Pricing Card */
.price-header {
    text-align: center;
    margin-bottom: 2rem;
}
.price-amount {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    line-height: 1;
}
.currency {
    font-size: 1.5rem;
    color: #2c2c2c;
    margin-top: 0.5rem;
}
.amount {
    font-size: 3rem;
    font-weight: 700;
    color: #1a1a1a;
}
.period {
    font-size: 1.5rem;
    color: #2c2c2c;
    margin-top: 0.5rem;
}
.price-note {
    color: #2c2c2c;
    font-size: 0.9rem;
    margin-top: 0.5rem;
}
.price-features ul {
    list-style: none;
    padding: 0;
}
.price-features li {
    padding: 0.5rem 0;
    color: #2c2c2c;
    font-size: 0.9rem;
}
.money-back {
    text-align: center;
    color: #2c2c2c;
    font-size: 0.85rem;
    margin: 1rem 0 0 0;
}
/* Course Info */
.info-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.info-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid #f0f0f0;
}
.info-item:last-child {
    border-bottom: none;
}
.info-label {
    color: #2c2c2c;
    font-weight: 500;
}
.info-value {
    color: #1a1a1a;
    font-weight: 600;
}
/* Instructor Info */
.instructor-profile {
    display: flex;
    gap: 1rem;
}
.instructor-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    flex-shrink: 0;
}
.instructor-details h4 {
    margin: 0 0 0.25rem 0;
    color: #1a1a1a;
}
.instructor-title {
    color: #2c2c2c;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}
.instructor-bio {
    color: #2c2c2c;
    font-size: 0.85rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}
.instructor-stats {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: #2c2c2c;
}
/* Share Buttons */
.share-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}
.share-btn {
    padding: 0.75rem;
    text-align: center;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}
.share-btn.facebook {
    background: #f0f0f0;
    color: #1a1a1a;
}
.share-btn.twitter {
    background: #f0f0f0;
    color: #1a1a1a;
}
.share-btn.linkedin {
    background: #f0f0f0;
    color: #1a1a1a;
}
.share-btn.email {
    background: #f0f0f0;
    color: #1a1a1a;
}
.share-btn:hover {
    background: #2c2c2c;
    color: white;
}
/* Related Courses */
.related-courses {
    padding: 50px 0;
    background: #f5f5f5;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}
.course-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}
.course-card .course-image {
    height: 200px;
    overflow: hidden;
}
.course-card .course-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.course-card .course-content {
    padding: 1.5rem;
}
.course-card h4 {
    color: #1a1a1a;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}
.course-card p {
    color: #2c2c2c;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.5;
}
.course-card .course-price {
    font-size: 1.3rem;
    font-weight: 700;
    color: #2c2c2c;
    margin-bottom: 1rem;
}
.course-link {
    color: #2c2c2c;
    text-decoration: none;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: border-color 0.3s ease;
}
.course-link:hover {
    border-bottom-color: #2c2c2c;
}
/* Mobile Responsive for Course Detail */
@media (max-width: 768px) {
    .course-title {
        font-size: 2rem;
    }
    .course-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    .content-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .content-main {
        order: 1;
    }
    .content-sidebar {
        position: static;
        order: 2;
    }
    .outcomes-grid {
        grid-template-columns: 1fr;
    }
    .related-grid {
        grid-template-columns: 1fr;
    }
    .course-meta {
        justify-content: center;
        text-align: center;
    }
    .instructor-profile {
        flex-direction: column;
        text-align: center;
    }
    .share-buttons {
        grid-template-columns: 1fr;
    }
}
/* Course Detail Page Styles */
/* Course Hero Section */
.course-hero {
    background: linear-gradient(135deg, #f8f8f8 0%, #e8f5e8 100%);
    padding: 120px 0 80px;
}
.course-breadcrumb {
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    color: #2c2c2c;
}
.course-breadcrumb a {
    color: #2c2c2c;
    text-decoration: none;
}
.course-breadcrumb a:hover {
    text-decoration: underline;
}
.course-breadcrumb span {
    margin: 0 0.5rem;
    color: #666666;
}
.course-header {
    max-width: 800px;
}
.course-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}
.course-category,
.course-level,
.course-duration {
    background: #2c2c2c;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}
.course-title {
    font-size: 3rem;
    font-weight: 700;
    color: #1a1a1a;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}
.course-subtitle {
    font-size: 1.2rem;
    color: #2c2c2c;
    line-height: 1.6;
    margin-bottom: 2rem;
}
.course-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}
.stat-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}
.stat-icon {
    font-size: 2rem;
    width: 50px;
    text-align: center;
}
.stat-content {
    display: flex;
    flex-direction: column;
}
.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1a1a1a;
    line-height: 1;
}
.stat-label {
    font-size: 0.8rem;
    color: #2c2c2c;
    margin-top: 0.2rem;
}
/* Course Content Layout */
.course-content {
    padding: 80px 0;
    background: white;
}
.content-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}
.content-main {
    max-width: none;
}
.content-section {
    margin-bottom: 4rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid #e5e5e5;
}
.content-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}
.content-section h2 {
    font-size: 2rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 2rem;
}
.content-section h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1a1a1a;
    margin: 2rem 0 1rem;
}
.course-image {
    margin: 2rem 0;
    border-radius: 15px;
    overflow: hidden;
}
.course-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}
.course-description {
    font-size: 1.1rem;
    line-height: 1.7;
    color: #1a1a1a;
}
.course-description p {
    margin-bottom: 1.5rem;
}
.feature-list {
    margin: 2rem 0;
    padding-left: 0;
    list-style: none;
}
.feature-list li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
}
.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #2c2c2c;
    font-weight: bold;
}
/* Curriculum Styles */
.curriculum-modules {
    background: #f5f5f5;
    border-radius: 15px;
    overflow: hidden;
}
.module-item {
    border-bottom: 1px solid #e5e5e5;
}
.module-item:last-child {
    border-bottom: none;
}
.module-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background: white;
    cursor: pointer;
    transition: background 0.3s ease;
}
.module-header:hover {
    background: #fbfbfb;
}
.module-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1a1a1a;
    margin: 0;
}
.module-duration {
    font-size: 0.9rem;
    color: #2c2c2c;
    background: #f0f8f0;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
}
.module-content {
    padding: 0 2rem 1.5rem;
    background: #fbfbfb;
}
.lesson-list {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0;
}
.lesson-list li {
    padding: 0.5rem 0;
    color: #1a1a1a;
    border-bottom: 1px solid #f0f0f0;
}
.lesson-list li:last-child {
    border-bottom: none;
}
/* Learning Outcomes */
.outcomes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}
.outcome-item {
    background: #f5f5f5;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
}
.outcome-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}
.outcome-item h4 {
    color: #1a1a1a;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}
.outcome-item p {
    color: #2c2c2c;
    line-height: 1.5;
    margin: 0;
}
/* Reviews */
.reviews-container {
    margin-top: 2rem;
}
.review-item {
    background: #f5f5f5;
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 2rem;
}
.review-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}
.reviewer-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.reviewer-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}
.reviewer-details h4 {
    margin: 0;
    color: #1a1a1a;
    font-size: 1.1rem;
}
.reviewer-details span {
    color: #2c2c2c;
    font-size: 0.9rem;
}
.review-rating .stars {
    font-size: 1.2rem;
}
.review-text {
    color: #1a1a1a;
    line-height: 1.6;
    margin: 0;
    font-style: italic;
}
/* Sidebar Styles */
.content-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}
.sidebar-card {
    background: white;
    border: 1px solid #e5e5e5;
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}
.sidebar-card h3 {
    color: #1a1a1a;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}
/* Pricing Card */
.price-header {
    text-align: center;
    margin-bottom: 2rem;
}
.price-amount {
    display: flex;
    align-items: baseline;
    justify-content: center;
    margin-bottom: 0.5rem;
}
.currency {
    font-size: 1.5rem;
    color: #2c2c2c;
}
.amount {
    font-size: 3rem;
    font-weight: 700;
    color: #1a1a1a;
}
.period {
    font-size: 1.2rem;
    color: #2c2c2c;
}
.price-note {
    color: #2c2c2c;
    font-size: 0.9rem;
}
.price-features ul {
    list-style: none;
    padding: 0;
    margin: 0 0 2rem;
}
.price-features li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #f0f0f0;
    font-size: 0.9rem;
}
.price-features li:last-child {
    border-bottom: none;
}
.enroll-btn.primary {
    width: 100%;
    background: #2c2c2c;
    color: white;
    border: none;
    padding: 15px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background 0.3s ease;
    margin-bottom: 1rem;
}
.enroll-btn.primary:hover {
    background: #262d19;
}
.money-back {
    text-align: center;
    color: #2c2c2c;
    font-size: 0.8rem;
    margin: 0;
}
/* Course Info */
.info-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.info-item {
    display: flex;
    justify-content: space-between;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #f0f0f0;
}
.info-label {
    color: #2c2c2c;
    font-weight: 500;
}
.info-value {
    color: #1a1a1a;
    font-weight: 600;
}
/* Instructor Info */
.instructor-profile {
    display: flex;
    gap: 1rem;
    align-items: start;
}
.instructor-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    flex-shrink: 0;
}
.instructor-details h4 {
    margin: 0 0 0.5rem;
    color: #1a1a1a;
}
.instructor-title {
    color: #2c2c2c;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}
.instructor-bio {
    color: #1a1a1a;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}
.instructor-stats {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: #2c2c2c;
}
/* Share Buttons */
.share-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}
.share-btn {
    padding: 0.7rem;
    border-radius: 8px;
    text-decoration: none;
    text-align: center;
    font-size: 0.8rem;
    font-weight: 500;
    transition: transform 0.3s ease;
}
.share-btn:hover {
    transform: translateY(-2px);
}
.share-btn.facebook {
    background: #1877f2;
    color: white;
}
.share-btn.twitter {
    background: #1da1f2;
    color: white;
}
.share-btn.linkedin {
    background: #0a66c2;
    color: white;
}
.share-btn.email {
    background: #34495e;
    color: white;
}
/* Related Courses */
.related-courses {
    padding: 50px 0;
    background: #f5f5f5;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}
.course-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}
.course-card:hover {
    transform: translateY(-5px);
}
.course-card .course-image {
    margin: 0;
    border-radius: 0;
}
.course-card .course-image img {
    height: 200px;
    object-fit: cover;
}
.course-card .course-content {
    padding: 1.5rem;
}
.course-card h4 {
    color: #1a1a1a;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}
.course-card p {
    color: #2c2c2c;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.5;
}
.course-card .course-price {
    font-size: 1.3rem;
    font-weight: 700;
    color: #2c2c2c;
    margin-bottom: 1rem;
}
.course-link {
    display: inline-block;
    color: #2c2c2c;
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border: 2px solid #2c2c2c;
    border-radius: 6px;
    transition: all 0.3s ease;
}
.course-link:hover {
    background: #2c2c2c;
    color: white;
}
/* Mobile Responsive for Course Detail */
@media (max-width: 768px) {
    .course-title {
        font-size: 2rem;
    }
    .course-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
    .course-stats {
        grid-template-columns: 1fr;
    }
    .content-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .content-sidebar {
        position: static;
        order: -1;
    }
    .outcomes-grid {
        grid-template-columns: 1fr;
    }
    .share-buttons {
        grid-template-columns: 1fr;
    }
    .related-grid {
        grid-template-columns: 1fr;
    }
    .instructor-profile {
        flex-direction: column;
        text-align: center;
    }
}
.footer {
    background: #1a1a1a;
    color: white;
    padding: 2rem 0;
    text-align: center;
}

/* 手写字体样式 */
@import url('https://fonts.googleapis.com/css2?family=Kalam:wght@300;400;700&display=swap');

.footer-poetry {
    font-family: 'Kalam', cursive;
    font-size: 0.95rem;
    line-height: 1.6;
    color: #e8e8e8;
    font-weight: 400;
    letter-spacing: 0.3px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    margin: 0;
}
/* Mobile */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-title {
        font-size: 2.5rem;
    }
    .features-grid, .benefits-grid, .team-grid, .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    /* Mobile Why Choose Us Section */
    .learn-anytime {
        padding: 60px 0;
    }
    
    .learn-anytime .section-title {
        font-size: 2.2rem;
        margin-bottom: 1rem;
    }
    
    .learn-anytime .section-description {
        font-size: 1.1rem;
        padding: 0 20px;
    }
    
    .learn-anytime .benefits-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 0 20px;
    }
    
    .learn-anytime .benefit-item {
        padding: 2rem 1.5rem;
        border-radius: 16px;
    }
    
    .learn-anytime .benefit-number {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
        margin-bottom: 1.5rem;
    }
    
    .learn-anytime .benefit-item h4 {
        font-size: 1.3rem;
        margin-bottom: 1rem;
    }
    
    .learn-anytime .benefit-item p {
        font-size: 0.95rem;
        line-height: 1.6;
    }
    
    .learn-anytime .benefit-icon {
        top: 1.5rem;
        right: 1.5rem;
        width: 50px;
        height: 50px;
    }
    
    .learn-anytime .benefit-icon svg {
        width: 24px;
        height: 24px;
    }
    
    /* Global Perspective Mobile Styles */
    .global-perspective {
        padding: 80px 0;
        min-height: 70vh;
    }
    
    .global-perspective .modern-hero-content {
        gap: 2rem;
        padding: 0 20px;
    }
    
    .hero-name {
        font-size: 3rem;
        letter-spacing: -0.01em;
    }
    
    .profile-img {
        width: 150px;
        height: 150px;
        border-width: 3px;
        object-position: center 0%;
    }
    
    .hero-description {
        font-size: 1.1rem;
        line-height: 1.4;
        max-width: 100%;
        text-align: center;
        padding: 0 10px;
    }
    
    .skill-tags {
        gap: 0.8rem;
    }
    
    .skill-tag {
        padding: 0.7rem 1.4rem;
        font-size: 0.9rem;
        border-radius: 25px;
    }
    
    .experience-metrics {
        gap: 3rem;
    }
    
    .experience-number {
        font-size: 2.8rem;
    }
    
    .experience-label {
        font-size: 1rem;
    }
    
    .get-in-touch-button {
        padding: 1rem 2rem;
        font-size: 1rem;
        border-radius: 10px;
    }
}

/* Product Showcase Styles */
.product-showcase {
    padding: 100px 0;
    background: #ffffff;
}

.product-showcase-header {
    text-align: center;
    margin-bottom: 4rem;
}

.product-showcase-header h2 {
    font-size: 3rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.product-divider {
    width: 80px;
    height: 2px;
    background: #e5e7eb;
    margin: 0 auto 2rem;
    border-radius: 1px;
}

.product-showcase-header p {
    font-size: 1.2rem;
    color: #6b7280;
    line-height: 1.7;
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
}

/* Filter Buttons */
.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: 1px solid #e5e7eb;
    background: #ffffff;
    color: #6b7280;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.filter-btn:hover {
    background: #f9fafb;
    border-color: #d1d5db;
    color: #374151;
}

.filter-btn.active {
    background: #3b82f6;
    border-color: #3b82f6;
    color: #ffffff;
    box-shadow: 0 2px 4px rgba(59, 130, 246, 0.2);
}

.filter-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.product-count {
    font-size: 0.9rem;
    color: #9ca3af;
    font-weight: 500;
    margin-top: 1rem;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 1200px) {
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
}

@media (max-width: 992px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

.product-card {
    background: #ffffff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #f3f4f6;
    position: relative;
}

.product-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    border-color: #e5e7eb;
}

/* Product Preview Section */
.product-preview {
    position: relative;
    height: 120px;
    overflow: hidden;
    border-bottom: 1px solid #f3f4f6;
}

.preview-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.2) 50%, transparent 100%);
    backdrop-filter: blur(10px);
    z-index: 10;
}

.preview-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: #ffffff;
    flex: 1;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.preview-badge {
    background: rgba(59, 130, 246, 0.9);
    color: #ffffff;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.preview-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

/* Chart Placeholder */
.chart-placeholder {
    display: flex;
    align-items: end;
    gap: 0.5rem;
    height: 60px;
    flex: 1;
}

.chart-bar {
    width: 20px;
    border-radius: 2px 2px 0 0;
    transition: all 0.3s ease;
}

.chart-bar:hover {
    transform: scaleY(1.1);
}

/* Dashboard Preview */
.dashboard-preview {
    flex: 1;
    background: #ffffff;
    border-radius: 8px;
    padding: 0.75rem;
    border: 1px solid #e5e7eb;
}

.dashboard-header {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.dashboard-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #d1d5db;
}

.dashboard-dot:first-child {
    background: #ef4444;
}

.dashboard-dot:nth-child(2) {
    background: #f59e0b;
}

.dashboard-dot:nth-child(3) {
    background: #10b981;
}

.dashboard-content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.dashboard-item {
    height: 8px;
    background: #f3f4f6;
    border-radius: 2px;
}

.dashboard-item:nth-child(2) {
    width: 80%;
}

.dashboard-item:nth-child(3) {
    width: 60%;
}

/* Interactive Preview */
.interactive-preview {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.interactive-element {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.element-circle {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #3b82f6;
}

.element-square {
    width: 16px;
    height: 16px;
    border-radius: 3px;
    background: #8b5cf6;
}

.element-triangle {
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 16px solid #10b981;
}

.element-line {
    height: 2px;
    background: #d1d5db;
    flex: 1;
}

/* Preview Stats */
.preview-stats {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-width: 80px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.stat-label {
    font-size: 0.7rem;
    color: #6b7280;
    font-weight: 500;
}

.stat-value {
    font-size: 0.9rem;
    color: #1f2937;
    font-weight: 700;
}

/* Product Info Section */
.product-info {
    padding: 1.5rem 1.5rem 0.75rem 1.5rem;
}

.product-info h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.product-info p {
    color: #6b7280;
    line-height: 1.6;
    margin-bottom: 1.25rem;
    font-size: 0.95rem;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.feature-tag {
    background: #f0f9ff;
    color: #0369a1;
    padding: 0.3rem 0.75rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid #bae6fd;
}

.product-link {
    color: #3b82f6;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.product-link:hover {
    color: #1d4ed8;
    transform: translateX(2px);
}

/* Home Page Product Showcase Grid */
.product-showcase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.product-showcase-item {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
}

.product-showcase-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.product-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    background: #f8f9fa;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.product-showcase-item:hover .product-icon {
    background: #e3f2fd;
    transform: scale(1.1);
}

.product-icon img {
    width: 30px;
    height: 30px;
}

.product-showcase-item h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.product-showcase-item p {
    color: #2c2c2c;
    line-height: 1.5;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.tag {
    background: #f0f8ff;
    color: #2563eb;
    padding: 0.3rem 0.7rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid #e3f2fd;
}

.product-btn {
    color: #2563eb;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.product-btn:hover {
    color: #1d4ed8;
    transform: translateX(2px);
}

/* Enhanced Product Preview Styles */
.video-preview {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    overflow: hidden;
}

.video-icon-preview {
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    z-index: 2;
}

.video-waves {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.wave {
    position: absolute;
    width: 4px;
    height: 20px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    animation: waveAnimation 1.5s ease-in-out infinite;
}

.wave-1 {
    left: 30%;
    animation-delay: 0s;
}

.wave-2 {
    left: 50%;
    animation-delay: 0.2s;
}

.wave-3 {
    left: 70%;
    animation-delay: 0.4s;
}

@keyframes waveAnimation {
    0%, 100% { height: 20px; opacity: 0.3; }
    50% { height: 40px; opacity: 0.6; }
}

.video-stats {
    position: absolute;
    bottom: 8px;
    left: 8px;
    right: 8px;
    display: flex;
    justify-content: space-between;
    gap: 0.5rem;
}

.video-stat {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    font-size: 0.6rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Code Preview Styles */
.code-preview {
    width: 100%;
    height: 100%;
    background: #1e1e1e;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.code-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: #2d2d2d;
    border-bottom: 1px solid #333;
}

.code-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.code-dot.red { background: #ff5f56; }
.code-dot.yellow { background: #ffbd2e; }
.code-dot.green { background: #27ca3f; }

.code-filename {
    color: #ccc;
    font-size: 0.7rem;
    font-weight: 500;
}

.code-content {
    padding: 0.75rem;
}

.code-line {
    font-family: 'Courier New', monospace;
    font-size: 0.7rem;
    line-height: 1.4;
    margin-bottom: 0.25rem;
}

.code-keyword {
    color: #569cd6;
    font-weight: 600;
}

.code-function {
    color: #dcdcaa;
}

.code-string {
    color: #ce9178;
}

.code-comment {
    color: #6a9955;
    font-style: italic;
}

/* Finance Preview Styles */
.finance-preview {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    padding: 0.75rem;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.chart-container {
    position: relative;
    height: 40px;
    width: 100%;
}

.chart-line {
    position: relative;
    height: 100%;
    width: 100%;
}

.line-point {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    box-shadow: 0 0 6px rgba(255, 255, 255, 0.5);
}

.line-point::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.3; }
    50% { transform: translate(-50%, -50%) scale(1.5); opacity: 0.6; }
}

.chart-trend {
    position: absolute;
    top: -8px;
    right: 0;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    font-size: 0.6rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.chart-trend.up {
    color: #10b981;
    background: rgba(16, 185, 129, 0.2);
}

.finance-stats {
    position: absolute;
    bottom: 8px;
    left: 8px;
    right: 8px;
    display: flex;
    justify-content: space-between;
    gap: 0.5rem;
}

.finance-stat {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    font-size: 0.6rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Video Card Styles */
.video-card {
    position: relative;
    height: 400px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.video-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.video-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: all 0.4s ease;
}

.video-bg-1 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    background-size: 200% 200%;
    animation: gradientShift1 8s ease infinite;
}

.video-bg-2 {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 50%, #4facfe 100%);
    background-size: 200% 200%;
    animation: gradientShift2 8s ease infinite;
}

.video-bg-3 {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 50%, #43e97b 100%);
    background-size: 200% 200%;
    animation: gradientShift3 8s ease infinite;
}

@keyframes gradientShift1 {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes gradientShift2 {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes gradientShift3 {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(1px);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s ease;
}

.video-card:hover .video-overlay {
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(2px);
}

.video-content {
    text-align: center;
    color: white;
    padding: 2rem;
    z-index: 2;
    position: relative;
}

.video-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: all 0.4s ease;
}

.video-card:hover .video-icon {
    transform: scale(1.1) rotate(5deg);
    background: rgba(255, 255, 255, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.video-icon svg {
    width: 48px;
    height: 48px;
    color: white;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.video-content h4 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    letter-spacing: -0.02em;
}

.video-content p {
    font-size: 1rem;
    margin-bottom: 1.5rem;
    opacity: 0.9;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    font-family: 'Courier New', monospace;
    background: rgba(0, 0, 0, 0.3);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    display: inline-block;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.video-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.video-features .feature-tag {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.video-card:hover .video-features .feature-tag {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.video-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: all 0.4s ease;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.video-link:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    color: white;
}

/* Floating particles animation */
.video-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 40% 40%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    animation: floatParticles 6s ease-in-out infinite;
    pointer-events: none;
}

@keyframes floatParticles {
    0%, 100% { opacity: 0.3; transform: translateY(0px); }
    50% { opacity: 0.6; transform: translateY(-10px); }
}

/* Tablet Responsive for Sharing Grid */
@media (max-width: 992px) and (min-width: 769px) {
    .my-sharing .sharing-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* Mobile Responsive for Product Showcase */
@media (max-width: 768px) {
    .product-showcase-header h2 {
        font-size: 2.5rem;
    }
    
    .product-showcase-header p {
        font-size: 1.1rem;
    }
    
    .filter-buttons {
        gap: 0.25rem;
        justify-content: center;
    }
    
    .filter-btn {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }
    
    .product-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .video-card {
        height: 350px;
        margin: 0 1rem;
    }
    
    .video-content {
        padding: 1.5rem;
    }
    
    .video-icon {
        width: 60px;
        height: 60px;
        margin-bottom: 1rem;
    }
    
    .video-icon svg {
        width: 36px;
        height: 36px;
    }
    
    .video-content h4 {
        font-size: 1.3rem;
    }
    
    .video-content p {
        font-size: 0.9rem;
        padding: 0.4rem 0.8rem;
    }
    
    .video-features .feature-tag {
        font-size: 0.75rem;
        padding: 0.3rem 0.6rem;
    }
    
    .video-link {
        padding: 0.7rem 1.2rem;
        font-size: 0.9rem;
    }
    
    .my-sharing .sharing-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        max-width: 100%;
    }
}

/* Tablet Responsive */
@media (max-width: 992px) and (min-width: 769px) {
    .video-card {
        height: 380px;
    }
    
    .video-content {
        padding: 1.8rem;
    }
    
    .video-icon {
        width: 70px;
        height: 70px;
    }
    
    .video-icon svg {
        width: 42px;
        height: 42px;
    }
    
    .video-content h4 {
        font-size: 1.4rem;
    }
}

/* Contact Modal Styles */
.contact-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    z-index: 1;
}

.modal-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 2;
    pointer-events: none;
}

.modal-content {
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: auto;
}

.contact-modal.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 2rem 2rem 1rem 2rem;
    border-bottom: 1px solid #e5e5e5;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.modal-title h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #1a1a1a;
    margin: 0 0 0.5rem 0;
    letter-spacing: -0.02em;
}

.modal-title p {
    color: #6b7280;
    font-size: 1rem;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    color: #6b7280;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: #f3f4f6;
    color: #1a1a1a;
}

.modal-body {
    max-height: calc(90vh - 120px);
    overflow-y: auto;
    padding: 0;
}

/* Email Style Layout */
.email-container {
    background: #ffffff;
}

.email-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem;
    border-bottom: 1px solid #e5e5e5;
    background: #f8f9fa;
}

.email-from {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.sender-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid #e5e5e5;
    background: #f3f4f6;
}

.sender-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 0%;
}

.sender-info {
    flex: 1;
}

.sender-name {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 0.25rem;
}

.sender-title {
    color: #6b7280;
    font-size: 0.9rem;
}

.email-meta {
    text-align: right;
}

.email-date {
    color: #6b7280;
    font-size: 0.9rem;
    font-weight: 500;
}

.email-content {
    padding: 2rem;
}

.email-greeting h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1a1a1a;
    margin: 0 0 1rem 0;
}

.email-greeting p {
    color: #4b5563;
    line-height: 1.6;
    margin-bottom: 2rem;
    font-size: 1rem;
}

/* Contact Methods Grid */
.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 12px;
    border: 1px solid #e5e5e5;
    transition: all 0.3s ease;
}

.contact-method:hover {
    background: #f0f9ff;
    border-color: #3b82f6;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.15);
}

.method-icon {
    width: 48px;
    height: 48px;
    background: #3b82f6;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.method-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin: 0 0 0.5rem 0;
}

.contact-link {
    color: #3b82f6;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.contact-link:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

.method-content p {
    color: #6b7280;
    font-size: 0.85rem;
    margin: 0.5rem 0 0 0;
    line-height: 1.4;
}

/* QR Code Section */
.qr-section {
    margin: 2rem 0;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 12px;
    border: 1px solid #e5e5e5;
}

.qr-container {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.qr-code {
    flex-shrink: 0;
}

.qr-image {
    width: 120px;
    height: 120px;
    border-radius: 12px;
    object-fit: cover;
    border: 2px solid #e5e5e5;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.qr-info h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1a1a1a;
    margin: 0 0 0.5rem 0;
}

.qr-info p {
    color: #6b7280;
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
}

/* Email CTA */
.email-cta {
    margin: 2rem 0;
    padding: 2rem;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: 12px;
    border: 1px solid #bae6fd;
}

.email-cta p {
    color: #1e40af;
    font-size: 1rem;
    line-height: 1.6;
    margin: 0 0 1.5rem 0;
    font-weight: 500;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.cta-btn.primary {
    background: #3b82f6;
    color: white;
    border-color: #3b82f6;
}

.cta-btn.primary:hover {
    background: #1d4ed8;
    border-color: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.cta-btn.secondary {
    background: transparent;
    color: #3b82f6;
    border-color: #3b82f6;
}

.cta-btn.secondary:hover {
    background: #3b82f6;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* Email Footer */
.email-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem;
    border-top: 1px solid #e5e5e5;
    background: #f8f9fa;
}

.signature p {
    margin: 0;
    color: #4b5563;
    line-height: 1.5;
}

.signature-title {
    font-size: 0.9rem;
    color: #6b7280;
    margin-top: 0.25rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: #3b82f6;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

/* Mobile Responsive for Contact Modal */
@media (max-width: 768px) {
    .modal-container {
        padding: 10px;
    }
    
    .modal-content {
        max-height: 95vh;
        border-radius: 16px;
    }
    
    .modal-header {
        padding: 1.5rem 1.5rem 1rem 1.5rem;
    }
    
    .modal-title h2 {
        font-size: 1.5rem;
    }
    
    .email-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        padding: 1.5rem;
    }
    
    .email-meta {
        text-align: left;
    }
    
    .email-content {
        padding: 1.5rem;
    }
    
    .contact-methods {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .contact-method {
        padding: 1rem;
    }
    
    .method-icon {
        width: 40px;
        height: 40px;
    }
    
    .qr-container {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .qr-image {
        width: 100px;
        height: 100px;
    }
    
    .email-cta {
        padding: 1.5rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .cta-btn {
        justify-content: center;
    }
    
    .email-footer {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
        padding: 1.5rem;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    /* 移动端手写字体调整 */
    .footer-poetry {
        font-size: 0.85rem;
        line-height: 1.5;
        letter-spacing: 0.2px;
    }
}