/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Pretendard', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    line-height: 1.7;
    color: #2d3748;
    overflow-x: hidden;
    letter-spacing: -0.01em;
    font-feature-settings: "liga" 1, "kern" 1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}


/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-family: 'Inter', 'Pretendard', sans-serif;
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 20px;
    color: #1a202c;
    letter-spacing: -0.02em;
}

.section-header .highlight {
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
}

.section-header p {
    font-family: 'Pretendard', sans-serif;
    font-size: 1.1rem;
    color: #4a5568;
    max-width: 600px;
    margin: 0 auto;
    font-weight: 400;
    letter-spacing: -0.005em;
    line-height: 1.6;
}

/* Expert Introduction */
.expert-intro {
    padding: 60px 0 100px 0;
    background: linear-gradient(135deg, #f8faff 0%, #e8f4fd 100%);
    margin-top: 0;
    position: relative;
    overflow: hidden;
}

.expert-intro::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    align-items: center;
}

.expert-photo {
    position: relative;
    margin-bottom: 30px;
    width: 250px;
    height: 250px;
    margin: 0 auto 30px auto;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.3);
    animation: breathe 4s ease-in-out infinite;
}

.expert-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    transition: transform 0.3s ease;
}

.expert-photo:hover img {
    transform: scale(1.05);
}

.photo-placeholder {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.3);
    margin: 0 auto;
    position: relative;
    overflow: hidden;
    animation: breathe 4s ease-in-out infinite;
}

.photo-placeholder::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent 40%, rgba(255, 255, 255, 0.1) 50%, transparent 60%);
    animation: rotate 8s linear infinite;
}

@keyframes breathe {
    0%, 100% { transform: scale(1); box-shadow: 0 20px 40px rgba(102, 126, 234, 0.3); }
    50% { transform: scale(1.05); box-shadow: 0 25px 50px rgba(102, 126, 234, 0.4); }
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.photo-placeholder span {
    font-size: 4rem;
    margin-bottom: 10px;
}

.credentials {
    margin-top: 30px;
}

.credential-item {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    background: white;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.credential-item .icon {
    font-size: 1.5rem;
    color: #667eea;
    width: 30px;
    text-align: center;
}

.intro-text h3 {
    font-family: 'Inter', 'Pretendard', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    color: #1a202c;
    margin-bottom: 20px;
    letter-spacing: -0.015em;
}

.intro-text > p {
    font-family: 'Pretendard', sans-serif;
    font-size: 1rem;
    color: #4a5568;
    margin-bottom: 30px;
    line-height: 1.7;
    font-weight: 400;
    letter-spacing: -0.005em;
}

.expertise-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.expertise-item {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-left: 4px solid #667eea;
}

.expertise-item strong {
    display: block;
    font-family: 'Inter', 'Pretendard', sans-serif;
    color: #1a202c;
    margin-bottom: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: -0.005em;
}

.expertise-item strong i {
    color: #667eea;
    margin-right: 8px;
}

.expertise-item p {
    color: #666;
    line-height: 1.6;
}

/* Benefits Section */
.benefits {
    padding: 100px 0;
    background: white;
}

.benefit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.benefit-card {
    background: linear-gradient(135deg, #f8faff 0%, #e8f4fd 100%);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.benefit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
    transition: left 0.6s ease;
}

.benefit-card:hover::before {
    left: 100%;
}

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

.benefit-card:nth-child(1) { animation-delay: 0.2s; }
.benefit-card:nth-child(2) { animation-delay: 0.4s; }
.benefit-card:nth-child(3) { animation-delay: 0.6s; }

.benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.2);
}

.benefit-card.featured {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    transform: scale(1.05);
}

.benefit-card.featured:hover {
    transform: scale(1.05) translateY(-10px);
}

.benefit-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #667eea;
}

.benefit-card.featured .benefit-icon {
    color: white;
}

.benefit-card h3 {
    font-family: 'Inter', 'Pretendard', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #1a202c;
    letter-spacing: -0.01em;
}

.benefit-card.featured h3 {
    color: white;
}

.benefit-card p {
    font-family: 'Pretendard', sans-serif;
    font-size: 0.95rem;
    margin-bottom: 20px;
    line-height: 1.6;
    color: #4a5568;
    font-weight: 400;
    letter-spacing: -0.005em;
}

.benefit-card.featured p {
    color: rgba(255, 255, 255, 0.9);
}

.benefit-card ul {
    list-style: none;
    text-align: left;
}

.benefit-card li {
    padding: 5px 0;
    color: #555;
    position: relative;
    padding-left: 20px;
}

.benefit-card.featured li {
    color: rgba(255, 255, 255, 0.9);
}

.benefit-card li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #00ff88;
    font-weight: bold;
}

/* Image-Text Modules */
.image-text-modules {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8faff 0%, #e8f4fd 100%);
}

.text-image-row {
    display: flex;
    align-items: center;
    gap: 60px;
    margin-bottom: 80px;
    opacity: 0;
    animation: fadeInUp 1s ease forwards;
}

.text-image-row:nth-child(1) { animation-delay: 0.2s; }
.text-image-row:nth-child(2) { animation-delay: 0.4s; }
.text-image-row:nth-child(3) { animation-delay: 0.6s; }

.text-image-left,
.text-image-right {
    flex: 1;
}

.text-image-left img,
.text-image-right img {
    width: 100%;
    height: 350px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.text-image-left img:hover,
.text-image-right img:hover {
    transform: scale(1.02);
}

.text-image-left h3,
.text-image-right h3 {
    font-family: 'Inter', 'Pretendard', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    color: #1a202c;
    margin-bottom: 20px;
    letter-spacing: -0.015em;
}

.text-image-left h3 i,
.text-image-right h3 i {
    color: #667eea;
    margin-right: 10px;
}

.text-image-left p,
.text-image-right p {
    font-family: 'Pretendard', sans-serif;
    font-size: 1rem;
    color: #4a5568;
    line-height: 1.7;
    margin-bottom: 25px;
    font-weight: 400;
    letter-spacing: -0.005em;
}

.text-image-left .feature-points,
.text-image-right .feature-points {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.text-image-left .point,
.text-image-right .point {
    font-family: 'Pretendard', sans-serif;
    color: #4a5568;
    font-weight: 500;
    letter-spacing: -0.005em;
}

.text-image-left .point i,
.text-image-right .point i {
    color: #00ff88;
    margin-right: 8px;
}

.chart-placeholder, .learning-placeholder, .community-placeholder {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.mock-chart {
    padding: 20px 0;
}

.chart-bars {
    display: flex;
    align-items: end;
    justify-content: center;
    gap: 10px;
    height: 150px;
    margin-bottom: 20px;
}

.bar {
    width: 30px;
    background: linear-gradient(to top, #667eea, #764ba2);
    border-radius: 5px 5px 0 0;
    animation: grow 2s ease-out;
}

@keyframes grow {
    from { height: 0; }
    to { height: var(--height); }
}

.mock-learning {
    padding: 20px 0;
}

.progress-bars {
    margin-bottom: 20px;
}

.progress-item {
    margin-bottom: 15px;
    text-align: left;
}

.progress-item span {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #1a1a3e;
}

.progress-bar {
    height: 10px;
    background: #eee;
    border-radius: 5px;
    overflow: hidden;
}

.progress {
    height: 100%;
    background: linear-gradient(to right, #00ff88, #00d4ff);
    border-radius: 5px;
    animation: progress-fill 2s ease-out;
}

@keyframes progress-fill {
    from { width: 0; }
    to { width: var(--width); }
}

.mock-community {
    padding: 20px 0;
}

.chat-bubbles {
    margin-bottom: 20px;
}

.bubble {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    padding: 10px 15px;
    border-radius: 20px;
    margin-bottom: 10px;
    display: inline-block;
    font-size: 0.9rem;
    animation: bubble-pop 0.5s ease-out;
}

.bubble:nth-child(2n) {
    background: linear-gradient(45deg, #ff6b6b, #ff8e8e);
    margin-left: 20px;
}

@keyframes bubble-pop {
    0% { transform: scale(0); opacity: 0; }
    80% { transform: scale(1.1); }
    100% { transform: scale(1); opacity: 1; }
}

.module-text h3 {
    font-family: 'Inter', 'Pretendard', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    color: #1a202c;
    margin-bottom: 20px;
    letter-spacing: -0.015em;
}

.module-text p {
    font-family: 'Pretendard', sans-serif;
    font-size: 1rem;
    color: #4a5568;
    line-height: 1.7;
    margin-bottom: 25px;
    font-weight: 400;
    letter-spacing: -0.005em;
}

.feature-points {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.point {
    font-family: 'Pretendard', sans-serif;
    color: #00ff88;
    font-weight: 500;
    padding-left: 5px;
    letter-spacing: -0.005em;
}

/* Real Reviews */
.real-reviews {
    padding: 100px 0;
    background: white;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.review-card {
    background: linear-gradient(135deg, #f8faff 0%, #e8f4fd 100%);
    padding: 30px;
    border-radius: 20px;
    border: 2px solid transparent;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    animation: reviewFadeIn 0.8s ease forwards;
}

.review-card.featured {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    transform: scale(1.02);
}

.review-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.2);
    border-color: #667eea;
}

.review-card.featured:hover {
    transform: scale(1.02) translateY(-5px);
    box-shadow: 0 20px 50px rgba(102, 126, 234, 0.3);
}

@keyframes reviewFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.review-card:nth-child(1) { animation-delay: 0.1s; }
.review-card:nth-child(2) { animation-delay: 0.2s; }
.review-card:nth-child(3) { animation-delay: 0.3s; }
.review-card:nth-child(4) { animation-delay: 0.4s; }
.review-card:nth-child(5) { animation-delay: 0.5s; }
.review-card:nth-child(6) { animation-delay: 0.6s; }

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

.reviewer-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: white;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.avatar i {
    color: white !important;
}

.review-card.featured .avatar {
    background: rgba(255, 255, 255, 0.2);
}

.reviewer-details h4 {
    font-family: 'Inter', 'Pretendard', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 5px 0;
    color: #1a202c;
}

.review-card.featured .reviewer-details h4 {
    color: white;
}

.reviewer-details span {
    font-family: 'Pretendard', sans-serif;
    font-size: 0.9rem;
    color: #4a5568;
    font-weight: 400;
}

.review-card.featured .reviewer-details span {
    color: rgba(255, 255, 255, 0.8);
}

.rating {
    font-size: 1.2rem;
}

.rating i {
    color: #ffd700;
    margin-right: 2px;
}

.review-content {
    margin-bottom: 20px;
}

.review-content p {
    font-family: 'Pretendard', sans-serif;
    font-size: 1rem;
    line-height: 1.7;
    color: #4a5568;
    margin: 0;
    font-weight: 400;
    letter-spacing: -0.005em;
}

.review-card.featured .review-content p {
    color: rgba(255, 255, 255, 0.9);
}

.review-date {
    font-family: 'Inter', 'Pretendard', sans-serif;
    font-size: 0.85rem;
    color: #718096;
    font-weight: 500;
}

.review-card.featured .review-date {
    color: rgba(255, 255, 255, 0.7);
}

.reviews-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 60px;
    padding: 40px;
    background: linear-gradient(135deg, #f8faff 0%, #e8f4fd 100%);
    border-radius: 20px;
}

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

.reviews-stats .stat-number {
    font-family: 'Inter', 'Pretendard', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: #667eea;
    text-shadow: 0 0 15px rgba(102, 126, 234, 0.3);
    margin-bottom: 8px;
}

.reviews-stats .stat-label {
    font-family: 'Pretendard', sans-serif;
    font-size: 1rem;
    color: #4a5568;
    font-weight: 500;
}

/* Activity Rules */
.activity-rules {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8faff 0%, #e8f4fd 100%);
}

.rules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.rule-step {
    background: linear-gradient(135deg, #f8faff 0%, #e8f4fd 100%);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    position: relative;
    border: 2px solid #e8f4fd;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    transform: translateY(30px) scale(0.9);
    animation: stepFadeIn 0.8s ease forwards;
}

@keyframes stepFadeIn {
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.rule-step:nth-child(1) { animation-delay: 0.1s; }
.rule-step:nth-child(2) { animation-delay: 0.2s; }
.rule-step:nth-child(3) { animation-delay: 0.3s; }
.rule-step:nth-child(4) { animation-delay: 0.4s; }

.rule-step:hover {
    transform: translateY(-5px);
    border-color: #667eea;
}

.step-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-family: 'Inter', 'Pretendard', monospace;
    font-size: 1rem;
}

.step-content h3 {
    font-family: 'Inter', 'Pretendard', sans-serif;
    font-size: 1.3rem;
    font-weight: 600;
    color: #1a202c;
    margin: 20px 0 15px 0;
    letter-spacing: -0.005em;
}

.step-content p {
    font-family: 'Pretendard', sans-serif;
    color: #4a5568;
    line-height: 1.6;
    font-weight: 400;
    letter-spacing: -0.005em;
}

.community-guidelines {
    background: linear-gradient(135deg, #1a1a3e 0%, #2d2d5f 100%);
    padding: 40px;
    border-radius: 20px;
    color: white;
}

.community-guidelines h3 {
    font-family: 'Inter', 'Pretendard', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 30px;
    text-align: center;
    letter-spacing: -0.01em;
}

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

.guideline-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.guideline-item .icon {
    font-size: 1.2rem;
}

/* CTA Section */
.cta {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-family: 'Inter', 'Pretendard', sans-serif;
    font-size: 2.6rem;
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.cta-content p {
    font-family: 'Pretendard', sans-serif;
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
    line-height: 1.6;
    font-weight: 400;
    letter-spacing: -0.005em;
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.1);
    padding: 15px 25px;
    border-radius: 25px;
    backdrop-filter: blur(10px);
}

.cta-feature .icon {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
}

/* Icon Animations */
.fas, .fab {
    transition: transform 0.3s ease, color 0.3s ease;
}

.benefit-card:hover .benefit-icon i,
.credential-item:hover .icon i,
.expertise-item:hover i {
    transform: scale(1.1);
}

.text-image-left:hover h3 i,
.text-image-right:hover h3 i {
    transform: rotate(10deg) scale(1.1);
}

.review-card:hover .avatar i {
    transform: rotate(360deg);
    transition: transform 0.6s ease;
}

/* Fixed Bottom Button */
.fixed-bottom-btn {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    width: max-content;
}

.join-btn {
    background: linear-gradient(45deg, #ff6b6b, #ff8e8e);
    color: white;
    border: none;
    padding: 18px 40px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: 0 10px 30px rgba(255, 107, 107, 0.4);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: 'Inter', 'Pretendard', sans-serif;
    letter-spacing: -0.005em;
    position: relative;
    overflow: hidden;
    animation: pulse 2s infinite;
}

.join-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transition: width 0.6s ease, height 0.6s ease;
    transform: translate(-50%, -50%);
}

.join-btn:hover::before {
    width: 300px;
    height: 300px;
}

@keyframes pulse {
    0%, 100% { 
        transform: scale(1); 
        box-shadow: 0 10px 30px rgba(255, 107, 107, 0.4);
    }
    50% { 
        transform: scale(1.05); 
        box-shadow: 0 15px 40px rgba(255, 107, 107, 0.6);
    }
}

.join-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(255, 107, 107, 0.5);
    background: linear-gradient(45deg, #ff5252, #ff6b6b);
}

.join-btn:active {
    transform: translateY(0);
}

.btn-icon {
    font-size: 1.3rem;
    color: white;
}

.btn-arrow {
    font-size: 1.3rem;
    transition: transform 0.3s ease;
    color: white;
}

.join-btn:hover .btn-arrow {
    transform: translateX(5px);
}

/* 浮动装饰元素 */
.floating-decoration {
    position: fixed;
    pointer-events: none;
    z-index: -1;
    opacity: 0.1;
}

.floating-decoration::before,
.floating-decoration::after {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: linear-gradient(45deg, #667eea, #764ba2);
    animation: floatDecorations 15s infinite ease-in-out;
}

.floating-decoration::before {
    top: 10%;
    left: -10%;
    animation-delay: 0s;
}

.floating-decoration::after {
    bottom: 10%;
    right: -10%;
    animation-delay: 7s;
}

@keyframes floatDecorations {
    0%, 100% { 
        transform: translateY(0px) rotate(0deg) scale(1);
    }
    25% { 
        transform: translateY(-30px) rotate(90deg) scale(1.1);
    }
    50% { 
        transform: translateY(-60px) rotate(180deg) scale(0.9);
    }
    75% { 
        transform: translateY(-30px) rotate(270deg) scale(1.1);
    }
}

/* 页面加载动画 */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.page-loader.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader-content {
    text-align: center;
    color: white;
}

.loader-spinner {
    width: 60px;
    height: 60px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .intro-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .text-image-row {
        flex-direction: column;
        gap: 30px;
        margin-bottom: 60px;
    }
    
    .text-image-left img,
    .text-image-right img {
        height: 250px;
    }
    
    .text-image-left,
    .text-image-right {
        text-align: center;
    }
    
    .reviews-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .reviews-stats {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }
    
    .hero-stats {
        gap: 40px;
    }
    
    .cta-features {
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .section-header h2 {
        font-size: 2rem;
    }
    
    .text-image-left h3,
    .text-image-right h3 {
        font-size: 1.5rem;
    }
    
    .text-image-left img,
    .text-image-right img {
        height: 200px;
    }
    
    .text-image-row {
        gap: 25px;
        margin-bottom: 50px;
    }
    
    .rules-grid {
        grid-template-columns: 1fr;
    }
    
    .guidelines-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-features {
        flex-direction: column;
        align-items: center;
    }
    
    .join-btn {
        padding: 15px 30px;
        font-size: 1.1rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .reviews-stats {
        padding: 30px 15px;
    }
    
    .reviews-stats .stat-number {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .text-image-left h3,
    .text-image-right h3 {
        font-size: 1.3rem;
    }
    
    .text-image-left img,
    .text-image-right img {
        height: 180px;
    }
    
    .text-image-row {
        gap: 20px;
        margin-bottom: 40px;
    }
    
    .benefit-grid {
        grid-template-columns: 1fr;
    }
    
    .expert-photo {
        width: 200px;
        height: 200px;
    }
    
    .join-btn {
        padding: 12px 25px;
        font-size: 1rem;
    }
    
    .reviews-stats .stat-number {
        font-size: 1.8rem;
    }
    
    .container {
        padding: 0 10px;
    }
}