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

body {
    font-family: 'Noto Sans KR', sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #f5576c 75%, #4facfe 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    position: relative;
    overflow-x: hidden;
}

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

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    z-index: -1;
    backdrop-filter: blur(10px);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* Header Styles */
.header {
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.95) 0%, 
        rgba(118, 75, 162, 0.95) 25%, 
        rgba(240, 147, 251, 0.95) 50%, 
        rgba(245, 87, 108, 0.95) 75%, 
        rgba(79, 172, 254, 0.95) 100%);
    color: white;
    padding: 1.5rem 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    animation: headerShimmer 3s ease-in-out infinite;
}

@keyframes headerShimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 1;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    transition: all 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
    text-shadow: 3px 3px 6px rgba(0,0,0,0.4);
}

.logo i {
    font-size: 2rem;
    color: #ffd700;
    filter: drop-shadow(2px 2px 4px rgba(0,0,0,0.3));
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: white;
    text-decoration: none;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    transition: all 0.3s ease;
    font-weight: 500;
    position: relative;
    overflow: hidden;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s ease;
}

.nav-link:hover::before {
    left: 100%;
}

.nav-link:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

/* Main Content */
main {
    margin-top: 100px;
    position: relative;
}

.section {
    padding: 6rem 0;
    position: relative;
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.3);
    backdrop-filter: blur(5px);
    z-index: -1;
}

.section > .container {
    position: relative;
    z-index: 10;
}

.alt-bg {
    background: linear-gradient(135deg, 
        rgba(240, 248, 255, 0.9) 0%, 
        rgba(230, 230, 250, 0.9) 50%, 
        rgba(255, 240, 245, 0.9) 100%);
}

.section-title {
    text-align: center;
    font-size: 3.5rem;
    margin-bottom: 4rem;
    background: linear-gradient(135deg, #667eea, #764ba2, #f093fb, #f5576c);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2, #f093fb, #f5576c);
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    font-size: 1.4rem;
    color: #666;
    margin-bottom: 3rem;
    line-height: 1.6;
    font-weight: 500;
}

/* Hero Section */
.intro-section {
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.95) 0%, 
        rgba(118, 75, 162, 0.95) 25%, 
        rgba(240, 147, 251, 0.95) 50%, 
        rgba(245, 87, 108, 0.95) 75%, 
        rgba(79, 172, 254, 0.95) 100%);
    color: white;
    padding: 8rem 0;
    position: relative;
    overflow: hidden;
}

.intro-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.05"><circle cx="30" cy="30" r="4"/></g></svg>');
    animation: float 20s ease-in-out infinite;
    z-index: 1;
}

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

.hero {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 5;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 2rem;
    line-height: 1.2;
    text-shadow: 3px 3px 6px rgba(0,0,0,0.3);
    background: linear-gradient(135deg, #ffffff, #ffd700, #ffffff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titleGlow 3s ease-in-out infinite alternate;
}

@keyframes titleGlow {
    0% { filter: drop-shadow(0 0 5px rgba(255,215,0,0.5)); }
    100% { filter: drop-shadow(0 0 20px rgba(255,215,0,0.8)); }
}

.hero-description {
    font-size: 1.4rem;
    margin-bottom: 2.5rem;
    line-height: 1.8;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.2);
    animation: fadeIn 1s ease-out 0.5s both;
}

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

.warning-box {
    background: linear-gradient(135deg, 
        rgba(255, 193, 7, 0.2) 0%, 
        rgba(255, 152, 0, 0.2) 100%);
    border: 2px solid #ffc107;
    border-radius: 20px;
    padding: 2rem;
    margin-bottom: 3rem;
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    backdrop-filter: blur(10px);
    box-shadow: 0 15px 35px rgba(255, 193, 7, 0.3);
    animation: warningPulse 2s ease-in-out infinite;
}

@keyframes warningPulse {
    0%, 100% { box-shadow: 0 15px 35px rgba(255, 193, 7, 0.3); }
    50% { box-shadow: 0 20px 40px rgba(255, 193, 7, 0.5); }
}

.warning-box i {
    color: #ffc107;
    font-size: 2rem;
    margin-top: 0.2rem;
    animation: bounce 2s infinite;
}

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

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    background: linear-gradient(135deg, #28a745, #20c997, #17a2b8);
    color: white;
    padding: 1.5rem 3rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.3rem;
    transition: all 0.4s ease;
    box-shadow: 0 10px 30px rgba(40, 167, 69, 0.4);
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.6s ease;
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover {
    background: linear-gradient(135deg, #218838, #1e7e34, #138496);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 40px rgba(40, 167, 69, 0.6);
}

.hero-image {
    text-align: center;
    font-size: 12rem;
    opacity: 0.3;
    animation: heroFloat 4s ease-in-out infinite;
    background: linear-gradient(135deg, #ffd700, #ff6b6b, #4ecdc4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@keyframes heroFloat {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(5deg); }
}

/* Statistics Section */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.stat-card {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.9) 0%, 
        rgba(240, 248, 255, 0.9) 100%);
    border-radius: 25px;
    padding: 2.5rem 2rem;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(20px);
    height: 320px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #667eea, #764ba2, #f093fb, #f5576c);
}

.stat-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.2);
}

.stat-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    box-shadow: 0 15px 30px rgba(102, 126, 234, 0.3);
    animation: iconPulse 3s ease-in-out infinite;
    flex-shrink: 0;
}

@keyframes iconPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.stat-card h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 700;
    line-height: 1.3;
    min-height: 2em;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-number {
    font-size: 2.8rem;
    font-weight: 900;
    background: linear-gradient(135deg, #ff6b6b, #4ecdc4, #45b7d1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 1rem 0;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-card p {
    color: #666;
    font-size: 1rem;
    line-height: 1.5;
    margin-top: auto;
    padding-top: 1rem;
}

/* Critical Trends */
.critical-trends {
    background: linear-gradient(135deg, 
        rgba(255, 99, 99, 0.1) 0%, 
        rgba(255, 159, 67, 0.1) 100%);
    border-radius: 25px;
    padding: 3rem;
    margin-top: 4rem;
    border: 2px solid rgba(255, 99, 99, 0.2);
    backdrop-filter: blur(10px);
}

.critical-trends h3 {
    text-align: center;
    font-size: 2.5rem;
    color: #e74c3c;
    margin-bottom: 3rem;
    font-weight: 700;
}

.trend-items {
    display: grid;
    gap: 2rem;
}

.trend-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.trend-item:hover {
    transform: translateX(10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.trend-item i {
    font-size: 2.5rem;
    color: #e74c3c;
    margin-top: 0.5rem;
    animation: trendIcon 3s ease-in-out infinite;
}

@keyframes trendIcon {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1) rotate(5deg); }
}

.trend-item h4 {
    color: #2c3e50;
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.trend-item p {
    color: #666;
    line-height: 1.6;
    font-size: 1.1rem;
}

/* Lessons Grid */
.lessons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
    margin-bottom: 4rem;
}

.lesson-card {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.95) 0%, 
        rgba(248, 249, 250, 0.95) 100%);
    border-radius: 25px;
    padding: 3rem 2.5rem;
    position: relative;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transition: all 0.4s ease;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(20px);
}

.lesson-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, #667eea, #764ba2, #f093fb, #f5576c, #4facfe);
    background-size: 200% 100%;
    animation: gradientMove 3s ease-in-out infinite;
}

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

.lesson-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 35px 70px rgba(0, 0, 0, 0.2);
}

.lesson-number {
    position: absolute;
    top: -15px;
    right: 25px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 900;
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
    animation: numberFloat 2s ease-in-out infinite;
}

@keyframes numberFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-5px); }
}

.lesson-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 2rem;
    background: linear-gradient(135deg, #f093fb, #f5576c);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    box-shadow: 0 15px 30px rgba(240, 147, 251, 0.4);
    transition: all 0.3s ease;
}

.lesson-card:hover .lesson-icon {
    transform: translateY(-8px) scale(1.05);
    background: linear-gradient(135deg, #667eea, #764ba2, #f093fb);
    box-shadow: 0 25px 50px rgba(240, 147, 251, 0.5);
}

.lesson-card h3 {
    text-align: center;
    font-size: 1.8rem;
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.lesson-card p {
    text-align: center;
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.7;
    font-size: 1.1rem;
}

.lesson-topics {
    list-style: none;
    margin-bottom: 2.5rem;
}

.lesson-topics li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 0.8rem;
    color: #555;
    line-height: 1.6;
    font-size: 1rem;
}

.lesson-topics li::before {
    content: "✨";
    position: absolute;
    left: 0;
    color: #f093fb;
    font-size: 1.2rem;
    animation: sparkle 2s ease-in-out infinite;
}

@keyframes sparkle {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.2); }
}

.lesson-btn {
    display: block;
    text-align: center;
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    color: white;
    padding: 1.2rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.4s ease;
    box-shadow: 0 10px 30px rgba(79, 172, 254, 0.3);
    position: relative;
    overflow: hidden;
}

.lesson-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.6s ease;
}

.lesson-btn:hover::before {
    left: 100%;
}

.lesson-btn:hover {
    background: linear-gradient(135deg, #3a8bfd, #0091ea);
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(79, 172, 254, 0.5);
}

/* Quick Actions */
.quick-actions {
    margin-top: 5rem;
    padding: 3rem;
    background: linear-gradient(135deg, 
        rgba(40, 167, 69, 0.1) 0%, 
        rgba(23, 162, 184, 0.1) 100%);
    border-radius: 25px;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(40, 167, 69, 0.2);
}

.quick-actions h3 {
    text-align: center;
    font-size: 2.5rem;
    color: #28a745;
    margin-bottom: 3rem;
    font-weight: 700;
}

.quick-action-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.quick-card {
    background: rgba(255, 255, 255, 0.9);
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.quick-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

.quick-card i {
    font-size: 3rem;
    color: #28a745;
    margin-bottom: 1.5rem;
    animation: quickIcon 2.5s ease-in-out infinite;
}

@keyframes quickIcon {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(10deg); }
}

.quick-card h4 {
    color: #2c3e50;
    font-size: 1.4rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.quick-card p {
    color: #666;
    font-size: 1.1rem;
    font-weight: 600;
}

/* Education Info Section */
.education-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
    margin-bottom: 4rem;
}

.info-card {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.95) 0%, 
        rgba(248, 249, 250, 0.95) 100%);
    border-radius: 25px;
    padding: 3rem 2.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transition: all 0.4s ease;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #28a745, #20c997, #17a2b8);
}

.info-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 35px 70px rgba(0, 0, 0, 0.2);
}

.info-card h3 {
    color: #2c3e50;
    font-size: 1.8rem;
    margin-bottom: 2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.info-card h3 i {
    color: #28a745;
    font-size: 2rem;
}

.info-card ul {
    list-style: none;
}

.info-card li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
    color: #555;
    line-height: 1.7;
    font-size: 1.1rem;
}

.info-card li::before {
    content: "🎯";
    position: absolute;
    left: 0;
    font-size: 1.2rem;
}

/* Key Messages Section */
.key-messages {
    margin-top: 5rem;
    padding: 3rem;
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.1) 0%, 
        rgba(118, 75, 162, 0.1) 100%);
    border-radius: 25px;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(102, 126, 234, 0.2);
}

.key-messages h3 {
    text-align: center;
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 3rem;
    font-weight: 700;
}

.message-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.message-item {
    background: rgba(255, 255, 255, 0.9);
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transition: all 0.4s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.message-item:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

.message-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 1.5rem;
    animation: messageIconFloat 3s ease-in-out infinite;
}

@keyframes messageIconFloat {
    0%, 100% { transform: translateY(0px) scale(1); }
    50% { transform: translateY(-10px) scale(1.1); }
}

.message-item h4 {
    color: #2c3e50;
    font-size: 1.4rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.message-item p {
    color: #666;
    font-size: 1rem;
    line-height: 1.6;
    font-weight: 500;
}

/* Crime Types Section */
.crime-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    margin-bottom: 4rem;
}

.crime-card {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.95) 0%, 
        rgba(248, 249, 250, 0.95) 100%);
    border-radius: 25px;
    padding: 3rem 2.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.crime-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, #ff6b6b, #ee5a24, #ffc048);
    background-size: 200% 100%;
    animation: gradientMove 3s ease-in-out infinite;
}

.crime-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 35px 70px rgba(0, 0, 0, 0.2);
}

.crime-icon {
    background: linear-gradient(135deg, #ff6b6b, #ee5a24, #ffc048);
    color: white;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
    margin: 0 auto 2rem;
    box-shadow: 0 20px 40px rgba(255, 107, 107, 0.4);
    animation: crimeIconFloat 3s ease-in-out infinite;
    position: relative;
}

@keyframes crimeIconFloat {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(5deg); }
}

.crime-icon::after {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 50%;
    background: linear-gradient(45deg, #ff6b6b, #ee5a24, #ffc048);
    opacity: 0.3;
    animation: iconGlow 2s ease-in-out infinite alternate;
}

@keyframes iconGlow {
    0% { transform: scale(1); opacity: 0.3; }
    100% { transform: scale(1.1); opacity: 0.6; }
}

.crime-card h3 {
    text-align: center;
    font-size: 2rem;
    background: linear-gradient(135deg, #2c3e50, #34495e, #ee5a24);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    font-weight: 800;
}

.definition {
    color: #666;
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.7;
    text-align: center;
}

.example {
    background: linear-gradient(135deg, 
        rgba(0, 123, 255, 0.1) 0%, 
        rgba(102, 126, 234, 0.1) 100%);
    border: none;
    border-left: 5px solid #007bff;
    padding: 1.5rem;
    border-radius: 15px;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(5px);
}

.example h4 {
    color: #007bff;
    font-size: 1rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.example h4::before {
    content: "💡";
    font-size: 1.2rem;
}

.example p {
    color: #555;
    font-style: italic;
    font-size: 1rem;
    line-height: 1.6;
}

.target-info {
    background: linear-gradient(135deg, 
        rgba(220, 53, 69, 0.1) 0%, 
        rgba(255, 99, 99, 0.1) 100%);
    color: #dc3545;
    font-size: 1rem;
    font-weight: 600;
    padding: 1rem;
    border-radius: 15px;
    text-align: center;
    border: 2px solid rgba(220, 53, 69, 0.2);
}

.elderly-warning {
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    border-radius: 15px;
    padding: 2rem;
    margin-top: 3rem;
}

.elderly-warning h3 {
    color: #721c24;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.warning-content {
    display: grid;
    gap: 1rem;
}

.warning-item {
    background: rgba(255,255,255,0.3);
    padding: 1rem;
    border-radius: 10px;
}

.warning-item strong {
    color: #721c24;
    display: block;
    margin-bottom: 0.5rem;
}

/* Deepfake Section */
.deepfake-explanation {
    margin-bottom: 3rem;
}

.deepfake-explanation h3 {
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 1rem;
    text-align: center;
}

.deepfake-explanation > p {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2rem;
}

.deepfake-types {
    margin-bottom: 3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.deepfake-types h3 {
    text-align: center;
    font-size: 2.2rem;
    color: #2c3e50;
    margin-bottom: 2.5rem;
    font-weight: 700;
}

.type-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
    max-width: 800px;
    width: 100%;
    justify-items: center;
}

.df-type {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.df-type i {
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 1rem;
}

.df-type h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.social-risks {
    margin-bottom: 3rem;
}

.social-risks h3 {
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 2rem;
    text-align: center;
}

.risk-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.risk-item {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    border: 2px solid #ff6b6b;
}

.risk-item i {
    font-size: 2rem;
    color: #ff6b6b;
    margin-bottom: 1rem;
}

.risk-item h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.detection-tips h3 {
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 2rem;
    text-align: center;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.tip-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.tip-card h4 {
    color: #28a745;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tip-card ul {
    list-style: none;
}

.tip-card li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: #666;
}

.tip-card li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
}

/* Response Section */
.response-scenarios {
    display: grid;
    gap: 3rem;
    margin-bottom: 3rem;
}

.scenario {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.scenario h3 {
    color: #2c3e50;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.scenario-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.what-to-do h4,
.response-phrases h4,
.warning-signs h4,
.verification-questions h4 {
    color: #007bff;
    margin-bottom: 1rem;
    font-weight: 600;
}

.what-to-do ol {
    list-style: none;
    counter-reset: step-counter;
}

.what-to-do li {
    counter-increment: step-counter;
    position: relative;
    padding-left: 2rem;
    margin-bottom: 0.8rem;
    line-height: 1.6;
}

.what-to-do li::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    background: #007bff;
    color: white;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: bold;
}

.phrase-box {
    background: #f8f9fa;
    border-left: 4px solid #28a745;
    padding: 1rem;
    border-radius: 5px;
}

.phrase-box p {
    margin-bottom: 0.5rem;
    color: #2c3e50;
    font-weight: 500;
}

.warning-signs ul,
.verification-questions ul {
    list-style: none;
}

.warning-signs li,
.verification-questions li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: #666;
}

.warning-signs li::before {
    content: "⚠";
    position: absolute;
    left: 0;
    color: #ffc107;
}

.verification-questions li::before {
    content: "?";
    position: absolute;
    left: 0;
    color: #007bff;
    font-weight: bold;
}

.report-info {
    background: linear-gradient(135deg, #74b9ff 0%, #0984e3 100%);
    border-radius: 15px;
    padding: 2rem;
    color: white;
}

.report-info h3 {
    text-align: center;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.report-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.report-card {
    background: rgba(255,255,255,0.2);
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
}

.report-card h4 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

/* Prevention Section */
.prevention-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.prevention-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.prevention-card:hover {
    transform: translateY(-5px);
}

.prevention-icon {
    background: linear-gradient(135deg, #28a745, #20c997);
    color: white;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.prevention-card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 600;
}

.prevention-card ul {
    list-style: none;
}

.prevention-card li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.8rem;
    color: #666;
    line-height: 1.5;
}

.prevention-card li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
}

.detailed-practices h3 {
    text-align: center;
    color: #2c3e50;
    font-size: 2rem;
    margin-bottom: 2rem;
}

.practices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.practice-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.step-number {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.practice-content h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.practice-content p {
    color: #666;
    line-height: 1.5;
}

/* Quiz Section */
.quiz-container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.quiz-intro {
    text-align: center;
    margin-bottom: 2rem;
    color: #666;
    font-size: 1.1rem;
}

.question {
    display: none;
    margin-bottom: 2rem;
}

.question.active {
    display: block;
}

.question h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.question p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
    font-size: 1.1rem;
}

.options {
    display: grid;
    gap: 1rem;
}

.option {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
}

.option:hover {
    border-color: #667eea;
    background-color: #f8f9fa;
}

.option input[type="radio"] {
    margin: 0;
}

.quiz-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #e9ecef;
}

.nav-btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.3s;
}

.nav-btn:hover {
    background: #5a6fd8;
}

.nav-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.submit-btn {
    background: #28a745;
}

.submit-btn:hover {
    background: #218838;
}

.question-indicator {
    font-weight: 600;
    color: #666;
}

.quiz-result {
    text-align: center;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 10px;
    margin-top: 2rem;
}

.quiz-result h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.restart-btn {
    background: #007bff;
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    margin-top: 1rem;
    transition: background-color 0.3s;
}

.restart-btn:hover {
    background: #0056b3;
}

/* Summary Section */
.summary-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.summary-item {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.summary-item i {
    color: #667eea;
    font-size: 2rem;
    margin-bottom: 1rem;
}

.summary-item h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 600;
}

.summary-item ul {
    list-style: none;
}

.summary-item li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.8rem;
    color: #666;
    line-height: 1.5;
}

.summary-item li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

.emergency-contacts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.contact {
    text-align: center;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 10px;
    border: 2px solid #e9ecef;
}

.contact strong {
    display: block;
    font-size: 1.5rem;
    color: #dc3545;
    margin-bottom: 0.5rem;
}

.contact span {
    font-size: 0.9rem;
    color: #666;
}

.final-cta {
    text-align: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 3rem 2rem;
    border-radius: 15px;
}

.final-cta h3 {
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.final-cta p {
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.print-btn {
    background: white;
    color: #667eea;
    border: none;
    padding: 1rem 2rem;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.print-btn:hover {
    background: #f8f9fa;
    transform: translateY(-2px);
}

/* Footer */
.footer {
    background: linear-gradient(135deg, 
        rgba(44, 62, 80, 0.98) 0%, 
        rgba(52, 73, 94, 0.98) 25%, 
        rgba(102, 126, 234, 0.98) 50%, 
        rgba(118, 75, 162, 0.98) 75%, 
        rgba(240, 147, 251, 0.98) 100%);
    color: white;
    padding: 5rem 0 2rem;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(20px);
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.03"><circle cx="50" cy="50" r="3"/><circle cx="20" cy="20" r="2"/><circle cx="80" cy="20" r="2"/><circle cx="20" cy="80" r="2"/><circle cx="80" cy="80" r="2"/></g></svg>');
    animation: footerPattern 25s linear infinite;
}

@keyframes footerPattern {
    0% { transform: translateX(0px) translateY(0px); }
    100% { transform: translateX(-100px) translateY(-100px); }
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
    position: relative;
    z-index: 1;
}

.footer-section {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.4s ease;
}

.footer-section:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.footer-section h4 {
    margin-bottom: 1.5rem;
    color: #ffd700;
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.footer-section h4::before {
    content: "🔥";
    font-size: 1.8rem;
    animation: footerEmoji 2.5s ease-in-out infinite;
}

@keyframes footerEmoji {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.2) rotate(15deg); }
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.8rem;
    position: relative;
    transition: all 0.3s ease;
}

.footer-section li::before {
    content: "⚡";
    color: #ffd700;
    margin-right: 0.8rem;
    transition: all 0.3s ease;
}

.footer-section li:hover::before {
    transform: scale(1.3) rotate(180deg);
    color: #fff;
}

.footer-section a,
.footer-section span {
    color: #e8f4f8;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 1.1rem;
    font-weight: 500;
}

.footer-section li:hover {
    transform: translateX(15px);
}

.footer-section a:hover,
.footer-section li:hover span {
    color: #ffd700;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.8);
    transform: scale(1.05);
}

.footer-bottom {
    text-align: center;
    padding-top: 3rem;
    border-top: 3px solid rgba(255, 215, 0, 0.4);
    color: #e8f4f8;
    font-size: 1.2rem;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.05);
    margin: 3rem -2rem -2rem;
    padding-left: 2rem;
    padding-right: 2rem;
    padding-bottom: 2rem;
    backdrop-filter: blur(10px);
    position: relative;
}

.footer-bottom::before {
    content: "💫";
    font-size: 2rem;
    margin-right: 1rem;
    animation: footerStar 3s ease-in-out infinite;
}

@keyframes footerStar {
    0%, 100% { opacity: 0.7; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.2); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-image {
        font-size: 4rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1.5rem;
    }
    
    .stat-card {
        height: 280px;
        padding: 2rem 1.5rem;
    }
    
    .stat-card h3 {
        font-size: 1.3rem;
    }
    
    .stat-number {
        font-size: 2.4rem;
    }
    
    .scenario-content {
        grid-template-columns: 1fr;
    }
    
    .quiz-navigation {
        flex-direction: column;
        gap: 1rem;
    }
    
    .summary-content {
        grid-template-columns: 1fr;
    }
    
    .emergency-contacts {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .section {
        padding: 2rem 0;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .stat-card {
        height: 260px;
        padding: 1.5rem;
    }
    
    .stat-icon {
        width: 60px;
        height: 60px;
        font-size: 2rem;
        margin-bottom: 1rem;
    }
    
    .stat-card h3 {
        font-size: 1.2rem;
    }
    
    .stat-number {
        font-size: 2.2rem;
    }
    
    .crime-types,
    .prevention-categories,
    .practices-grid {
        grid-template-columns: 1fr;
    }
    
    .tips-grid {
        grid-template-columns: 1fr;
    }
    
    .deepfake-types,
    .risk-grid {
        grid-template-columns: 1fr;
    }
    
    .report-grid {
        grid-template-columns: 1fr;
    }
}

/* Lesson Page Styles */
.lesson-header {
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.95) 0%, 
        rgba(118, 75, 162, 0.95) 25%, 
        rgba(240, 147, 251, 0.95) 50%, 
        rgba(245, 87, 108, 0.95) 75%, 
        rgba(79, 172, 254, 0.95) 100%);
    color: white;
    padding: 6rem 0 4rem;
    margin-top: 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.lesson-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.05"><circle cx="30" cy="30" r="4"/></g></svg>');
    animation: float 20s ease-in-out infinite;
    z-index: 1;
}

.lesson-breadcrumb {
    background: rgba(255, 255, 255, 0.2);
    color: #ffd700;
    font-weight: 600;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    display: inline-block;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
    z-index: 5;
}

.lesson-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    text-shadow: 3px 3px 6px rgba(0,0,0,0.3);
    background: linear-gradient(135deg, #ffffff, #ffd700, #ffffff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 5;
}

.lesson-subtitle {
    font-size: 1.4rem;
    margin-bottom: 2rem;
    line-height: 1.6;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.2);
    opacity: 0.95;
    position: relative;
    z-index: 5;
}

.lesson-meta {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 2rem;
    position: relative;
    z-index: 5;
}

.lesson-meta span {
    background: rgba(255, 255, 255, 0.2);
    padding: 1rem 1.5rem;
    border-radius: 25px;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.lesson-meta i {
    color: #ffd700;
    font-size: 1.2rem;
}

/* Learning Objectives */
.learning-objectives {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.objective-item {
    background: linear-gradient(135deg, 
        rgba(40, 167, 69, 0.1) 0%, 
        rgba(23, 162, 184, 0.1) 100%);
    border: 2px solid rgba(40, 167, 69, 0.3);
    border-radius: 15px;
    padding: 1.5rem 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.objective-item:hover {
    transform: translateX(10px);
    border-color: #28a745;
    background: linear-gradient(135deg, 
        rgba(40, 167, 69, 0.15) 0%, 
        rgba(23, 162, 184, 0.15) 100%);
    box-shadow: 0 15px 30px rgba(40, 167, 69, 0.2);
}

.objective-item i {
    color: #28a745;
    font-size: 1.8rem;
    animation: checkPulse 2s ease-in-out infinite;
}

@keyframes checkPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.objective-item span {
    font-size: 1.1rem;
    color: #2c3e50;
    font-weight: 500;
    line-height: 1.6;
}

/* Definition Box */
.definition-box {
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.1) 0%, 
        rgba(118, 75, 162, 0.1) 100%);
    border: 2px solid rgba(102, 126, 234, 0.3);
    border-radius: 20px;
    padding: 2.5rem;
    margin-bottom: 3rem;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.definition-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #667eea, #764ba2, #f093fb);
}

.definition-box h3 {
    color: #667eea;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.definition-box h3::before {
    content: "📖";
    font-size: 2rem;
}

.definition-box p {
    font-size: 1.2rem;
    line-height: 1.7;
    color: #555;
}

/* Crime Evolution */
.crime-evolution {
    margin-bottom: 3rem;
}

.crime-evolution h3 {
    text-align: center;
    font-size: 2.2rem;
    color: #2c3e50;
    margin-bottom: 2.5rem;
    font-weight: 700;
}

.evolution-grid {
    display: grid;
    gap: 2rem;
    margin-bottom: 3rem;
}

.evolution-item {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2rem;
    align-items: center;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.before, .after {
    text-align: center;
}

.before h4, .after h4 {
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.before h4 {
    color: #6c757d;
}

.after h4 {
    color: #dc3545;
}

.before ul, .after ul {
    list-style: none;
    text-align: left;
}

.before li, .after li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
    line-height: 1.6;
    color: #555;
}

.before li::before {
    content: "⚪";
    position: absolute;
    left: 0;
    color: #6c757d;
}

.after li::before {
    content: "🔴";
    position: absolute;
    left: 0;
    color: #dc3545;
}

.arrow {
    font-size: 3rem;
    color: #667eea;
    font-weight: bold;
    text-align: center;
    animation: arrowPulse 2s ease-in-out infinite;
}

@keyframes arrowPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* AI Impact */
.ai-impact {
    margin-bottom: 3rem;
}

.ai-impact h3 {
    text-align: center;
    font-size: 2.2rem;
    color: #2c3e50;
    margin-bottom: 2.5rem;
    font-weight: 700;
}

.impact-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.impact-card {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.95) 0%, 
        rgba(248, 249, 250, 0.95) 100%);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    text-align: center;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.impact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #ff6b6b, #ee5a24, #ffc048);
    background-size: 200% 100%;
    animation: gradientMove 3s ease-in-out infinite;
}

.impact-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

.impact-card i {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #ff6b6b, #ee5a24, #ffc048);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: iconBounce 2s ease-in-out infinite;
}

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

.detection-tips h3 {
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 2rem;
    text-align: center;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.tip-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.tip-card h4 {
    color: #28a745;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tip-card ul {
    list-style: none;
}

.tip-card li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: #666;
}

.tip-card li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
}

/* Response Section */
.response-scenarios {
    display: grid;
    gap: 3rem;
    margin-bottom: 3rem;
}

.scenario {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.scenario h3 {
    color: #2c3e50;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.scenario-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.what-to-do h4,
.response-phrases h4,
.warning-signs h4,
.verification-questions h4 {
    color: #007bff;
    margin-bottom: 1rem;
    font-weight: 600;
}

.what-to-do ol {
    list-style: none;
    counter-reset: step-counter;
}

.what-to-do li {
    counter-increment: step-counter;
    position: relative;
    padding-left: 2rem;
    margin-bottom: 0.8rem;
    line-height: 1.6;
}

.what-to-do li::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    background: #007bff;
    color: white;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: bold;
}

.phrase-box {
    background: #f8f9fa;
    border-left: 4px solid #28a745;
    padding: 1rem;
    border-radius: 5px;
}

.phrase-box p {
    margin-bottom: 0.5rem;
    color: #2c3e50;
    font-weight: 500;
}

.warning-signs ul,
.verification-questions ul {
    list-style: none;
}

.warning-signs li,
.verification-questions li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: #666;
}

.warning-signs li::before {
    content: "⚠";
    position: absolute;
    left: 0;
    color: #ffc107;
}

.verification-questions li::before {
    content: "?";
    position: absolute;
    left: 0;
    color: #007bff;
    font-weight: bold;
}

.report-info {
    background: linear-gradient(135deg, #74b9ff 0%, #0984e3 100%);
    border-radius: 15px;
    padding: 2rem;
    color: white;
}

.report-info h3 {
    text-align: center;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.report-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.report-card {
    background: rgba(255,255,255,0.2);
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
}

.report-card h4 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

/* Prevention Section */
.prevention-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.prevention-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.prevention-card:hover {
    transform: translateY(-5px);
}

.prevention-icon {
    background: linear-gradient(135deg, #28a745, #20c997);
    color: white;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.prevention-card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 600;
}

.prevention-card ul {
    list-style: none;
}

.prevention-card li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.8rem;
    color: #666;
    line-height: 1.5;
}

.prevention-card li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
}

.detailed-practices h3 {
    text-align: center;
    color: #2c3e50;
    font-size: 2rem;
    margin-bottom: 2rem;
}

.practices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.practice-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.step-number {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.practice-content h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.practice-content p {
    color: #666;
    line-height: 1.5;
}

/* Quiz Section */
.quiz-container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.quiz-intro {
    text-align: center;
    margin-bottom: 2rem;
    color: #666;
    font-size: 1.1rem;
}

.question {
    display: none;
    margin-bottom: 2rem;
}

.question.active {
    display: block;
}

.question h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.question p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
    font-size: 1.1rem;
}

.options {
    display: grid;
    gap: 1rem;
}

.option {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
}

.option:hover {
    border-color: #667eea;
    background-color: #f8f9fa;
}

.option input[type="radio"] {
    margin: 0;
}

.quiz-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #e9ecef;
}

.nav-btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.3s;
}

.nav-btn:hover {
    background: #5a6fd8;
}

.nav-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.submit-btn {
    background: #28a745;
}

.submit-btn:hover {
    background: #218838;
}

.question-indicator {
    font-weight: 600;
    color: #666;
}

.quiz-result {
    text-align: center;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 10px;
    margin-top: 2rem;
}

.quiz-result h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.restart-btn {
    background: #007bff;
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    margin-top: 1rem;
    transition: background-color 0.3s;
}

.restart-btn:hover {
    background: #0056b3;
}

/* Summary Section */
.summary-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.summary-item {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.summary-item i {
    color: #667eea;
    font-size: 2rem;
    margin-bottom: 1rem;
}

.summary-item h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 600;
}

.summary-item ul {
    list-style: none;
}

.summary-item li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.8rem;
    color: #666;
    line-height: 1.5;
}

.summary-item li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

.emergency-contacts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.contact {
    text-align: center;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 10px;
    border: 2px solid #e9ecef;
}

.contact strong {
    display: block;
    font-size: 1.5rem;
    color: #dc3545;
    margin-bottom: 0.5rem;
}

.contact span {
    font-size: 0.9rem;
    color: #666;
}

.final-cta {
    text-align: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 3rem 2rem;
    border-radius: 15px;
}

.final-cta h3 {
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.final-cta p {
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.print-btn {
    background: white;
    color: #667eea;
    border: none;
    padding: 1rem 2rem;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.print-btn:hover {
    background: #f8f9fa;
    transform: translateY(-2px);
}

/* Footer */
.footer {
    background: linear-gradient(135deg, 
        rgba(44, 62, 80, 0.98) 0%, 
        rgba(52, 73, 94, 0.98) 25%, 
        rgba(102, 126, 234, 0.98) 50%, 
        rgba(118, 75, 162, 0.98) 75%, 
        rgba(240, 147, 251, 0.98) 100%);
    color: white;
    padding: 5rem 0 2rem;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(20px);
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.03"><circle cx="50" cy="50" r="3"/><circle cx="20" cy="20" r="2"/><circle cx="80" cy="20" r="2"/><circle cx="20" cy="80" r="2"/><circle cx="80" cy="80" r="2"/></g></svg>');
    animation: footerPattern 25s linear infinite;
}

@keyframes footerPattern {
    0% { transform: translateX(0px) translateY(0px); }
    100% { transform: translateX(-100px) translateY(-100px); }
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
    position: relative;
    z-index: 1;
}

.footer-section {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.4s ease;
}

.footer-section:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.footer-section h4 {
    margin-bottom: 1.5rem;
    color: #ffd700;
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.footer-section h4::before {
    content: "🔥";
    font-size: 1.8rem;
    animation: footerEmoji 2.5s ease-in-out infinite;
}

@keyframes footerEmoji {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.2) rotate(15deg); }
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.8rem;
    position: relative;
    transition: all 0.3s ease;
}

.footer-section li::before {
    content: "⚡";
    color: #ffd700;
    margin-right: 0.8rem;
    transition: all 0.3s ease;
}

.footer-section li:hover::before {
    transform: scale(1.3) rotate(180deg);
    color: #fff;
}

.footer-section a,
.footer-section span {
    color: #e8f4f8;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 1.1rem;
    font-weight: 500;
}

.footer-section li:hover {
    transform: translateX(15px);
}

.footer-section a:hover,
.footer-section li:hover span {
    color: #ffd700;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.8);
    transform: scale(1.05);
}

.footer-bottom {
    text-align: center;
    padding-top: 3rem;
    border-top: 3px solid rgba(255, 215, 0, 0.4);
    color: #e8f4f8;
    font-size: 1.2rem;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.05);
    margin: 3rem -2rem -2rem;
    padding-left: 2rem;
    padding-right: 2rem;
    padding-bottom: 2rem;
    backdrop-filter: blur(10px);
    position: relative;
}

.footer-bottom::before {
    content: "💫";
    font-size: 2rem;
    margin-right: 1rem;
    animation: footerStar 3s ease-in-out infinite;
}

@keyframes footerStar {
    0%, 100% { opacity: 0.7; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.2); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-image {
        font-size: 4rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1.5rem;
    }
    
    .stat-card {
        height: 280px;
        padding: 2rem 1.5rem;
    }
    
    .stat-card h3 {
        font-size: 1.3rem;
    }
    
    .stat-number {
        font-size: 2.4rem;
    }
    
    .scenario-content {
        grid-template-columns: 1fr;
    }
    
    .quiz-navigation {
        flex-direction: column;
        gap: 1rem;
    }
    
    .summary-content {
        grid-template-columns: 1fr;
    }
    
    .emergency-contacts {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .section {
        padding: 2rem 0;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .stat-card {
        height: 260px;
        padding: 1.5rem;
    }
    
    .stat-icon {
        width: 60px;
        height: 60px;
        font-size: 2rem;
        margin-bottom: 1rem;
    }
    
    .stat-card h3 {
        font-size: 1.2rem;
    }
    
    .stat-number {
        font-size: 2.2rem;
    }
    
    .crime-types,
    .prevention-categories,
    .practices-grid {
        grid-template-columns: 1fr;
    }
    
    .tips-grid {
        grid-template-columns: 1fr;
    }
    
    .deepfake-types,
    .risk-grid {
        grid-template-columns: 1fr;
    }
    
    .report-grid {
        grid-template-columns: 1fr;
    }
}

/* Lesson Page Styles */
.lesson-header {
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.95) 0%, 
        rgba(118, 75, 162, 0.95) 25%, 
        rgba(240, 147, 251, 0.95) 50%, 
        rgba(245, 87, 108, 0.95) 75%, 
        rgba(79, 172, 254, 0.95) 100%);
    color: white;
    padding: 6rem 0 4rem;
    margin-top: 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.lesson-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.05"><circle cx="30" cy="30" r="4"/></g></svg>');
    animation: float 20s ease-in-out infinite;
    z-index: 1;
}

.lesson-breadcrumb {
    background: rgba(255, 255, 255, 0.2);
    color: #ffd700;
    font-weight: 600;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    display: inline-block;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
    z-index: 5;
}

.lesson-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    text-shadow: 3px 3px 6px rgba(0,0,0,0.3);
    background: linear-gradient(135deg, #ffffff, #ffd700, #ffffff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 5;
}

.lesson-subtitle {
    font-size: 1.4rem;
    margin-bottom: 2rem;
    line-height: 1.6;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.2);
    opacity: 0.95;
    position: relative;
    z-index: 5;
}

.lesson-meta {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 2rem;
    position: relative;
    z-index: 5;
}

.lesson-meta span {
    background: rgba(255, 255, 255, 0.2);
    padding: 1rem 1.5rem;
    border-radius: 25px;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.lesson-meta i {
    color: #ffd700;
    font-size: 1.2rem;
}

/* Learning Objectives */
.learning-objectives {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.objective-item {
    background: linear-gradient(135deg, 
        rgba(40, 167, 69, 0.1) 0%, 
        rgba(23, 162, 184, 0.1) 100%);
    border: 2px solid rgba(40, 167, 69, 0.3);
    border-radius: 15px;
    padding: 1.5rem 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.objective-item:hover {
    transform: translateX(10px);
    border-color: #28a745;
    background: linear-gradient(135deg, 
        rgba(40, 167, 69, 0.15) 0%, 
        rgba(23, 162, 184, 0.15) 100%);
    box-shadow: 0 15px 30px rgba(40, 167, 69, 0.2);
}

.objective-item i {
    color: #28a745;
    font-size: 1.8rem;
    animation: checkPulse 2s ease-in-out infinite;
}

@keyframes checkPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.objective-item span {
    font-size: 1.1rem;
    color: #2c3e50;
    font-weight: 500;
    line-height: 1.6;
}

/* Definition Box */
.definition-box {
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.1) 0%, 
        rgba(118, 75, 162, 0.1) 100%);
    border: 2px solid rgba(102, 126, 234, 0.3);
    border-radius: 20px;
    padding: 2.5rem;
    margin-bottom: 3rem;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.definition-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #667eea, #764ba2, #f093fb);
}

.definition-box h3 {
    color: #667eea;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.definition-box h3::before {
    content: "📖";
    font-size: 2rem;
}

.definition-box p {
    font-size: 1.2rem;
    line-height: 1.7;
    color: #555;
}

/* Crime Evolution */
.crime-evolution {
    margin-bottom: 3rem;
}

.crime-evolution h3 {
    text-align: center;
    font-size: 2.2rem;
    color: #2c3e50;
    margin-bottom: 2.5rem;
    font-weight: 700;
}

.evolution-grid {
    display: grid;
    gap: 2rem;
    margin-bottom: 3rem;
}

.evolution-item {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2rem;
    align-items: center;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.before, .after {
    text-align: center;
}

.before h4, .after h4 {
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.before h4 {
    color: #6c757d;
}

.after h4 {
    color: #dc3545;
}

.before ul, .after ul {
    list-style: none;
    text-align: left;
}

.before li, .after li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
    line-height: 1.6;
    color: #555;
}

.before li::before {
    content: "⚪";
    position: absolute;
    left: 0;
    color: #6c757d;
}

.after li::before {
    content: "🔴";
    position: absolute;
    left: 0;
    color: #dc3545;
}

.arrow {
    font-size: 3rem;
    color: #667eea;
    font-weight: bold;
    text-align: center;
    animation: arrowPulse 2s ease-in-out infinite;
}

@keyframes arrowPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* AI Impact */
.ai-impact {
    margin-bottom: 3rem;
}

.ai-impact h3 {
    text-align: center;
    font-size: 2.2rem;
    color: #2c3e50;
    margin-bottom: 2.5rem;
    font-weight: 700;
}

.impact-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.impact-card {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.95) 0%, 
        rgba(248, 249, 250, 0.95) 100%);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    text-align: center;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.impact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #ff6b6b, #ee5a24, #ffc048);
    background-size: 200% 100%;
    animation: gradientMove 3s ease-in-out infinite;
}

.impact-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

.impact-card i {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #ff6b6b, #ee5a24, #ffc048);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: iconBounce 2s ease-in-out infinite;
}

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

.impact-card h4 {
    color: #2c3e50;
    font-size: 1.4rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.impact-card p {
    color: #666;
    line-height: 1.6;
    font-size: 1rem;
}

/* Crime Types Detailed */
.crime-types-detailed {
    display: grid;
    gap: 3rem;
    margin-bottom: 3rem;
}

.crime-type-card {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.95) 0%, 
        rgba(248, 249, 250, 0.95) 100%);
    border-radius: 25px;
    padding: 3rem 2.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.crime-type-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, #667eea, #764ba2, #f093fb, #f5576c);
    background-size: 200% 100%;
    animation: gradientMove 3s ease-in-out infinite;
}

.crime-type-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 35px 70px rgba(0, 0, 0, 0.2);
}

.crime-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.crime-header i {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    box-shadow: 0 15px 30px rgba(102, 126, 234, 0.4);
    animation: crimeIconSpin 3s ease-in-out infinite;
}

@keyframes crimeIconSpin {
    0%, 100% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(5deg) scale(1.05); }
}

.crime-header h3 {
    font-size: 2.2rem;
    color: #2c3e50;
    font-weight: 800;
    background: linear-gradient(135deg, #2c3e50, #667eea);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.crime-content .description {
    font-size: 1.2rem;
    color: #666;
    line-height: 1.7;
    margin-bottom: 2rem;
    font-style: italic;
    text-align: center;
    padding: 1.5rem;
    background: rgba(102, 126, 234, 0.05);
    border-radius: 15px;
    border-left: 5px solid #667eea;
}

.crime-details {
    margin-bottom: 2rem;
}

.crime-details h4 {
    color: #2c3e50;
    font-size: 1.4rem;
    margin-bottom: 1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.crime-details h4::before {
    content: "🎯";
    font-size: 1.5rem;
}

.crime-details ul {
    list-style: none;
}

.crime-details li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
    line-height: 1.7;
    color: #555;
    font-size: 1.1rem;
}

.crime-details li::before {
    content: "▶";
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

.crime-details strong {
    color: #2c3e50;
    font-weight: 700;
}

.real-case {
    background: linear-gradient(135deg, 
        rgba(220, 53, 69, 0.1) 0%, 
        rgba(255, 99, 99, 0.1) 100%);
    border: 2px solid rgba(220, 53, 69, 0.3);
    border-radius: 15px;
    padding: 1.5rem;
    margin-top: 1.5rem;
}

.real-case h4 {
    color: #dc3545;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.real-case h4::before {
    content: "⚠️";
    font-size: 1.3rem;
}

.real-case p {
    color: #721c24;
    font-weight: 600;
    line-height: 1.6;
}

.warning-stat {
    background: linear-gradient(135deg, 
        rgba(255, 193, 7, 0.2) 0%, 
        rgba(255, 152, 0, 0.2) 100%);
    border: 2px solid #ffc107;
    border-radius: 15px;
    padding: 1.5rem;
    margin-top: 1.5rem;
    color: #856404;
    font-weight: 600;
    text-align: center;
    font-size: 1.1rem;
}

/* Severity Overview */
.severity-overview {
    margin-bottom: 3rem;
}

.severity-overview h3 {
    text-align: center;
    font-size: 2.2rem;
    color: #2c3e50;
    margin-bottom: 2.5rem;
    font-weight: 700;
}

.global-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.stat-highlight {
    background: linear-gradient(135deg, 
        rgba(220, 53, 69, 0.1) 0%, 
        rgba(255, 99, 99, 0.1) 100%);
    border: 2px solid rgba(220, 53, 69, 0.3);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.stat-highlight:hover {
    transform: translateY(-8px);
    border-color: #dc3545;
    box-shadow: 0 20px 40px rgba(220, 53, 69, 0.2);
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    color: #dc3545;
    margin-bottom: 1rem;
    display: block;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

.stat-desc {
    font-size: 1.1rem;
    color: #721c24;
    font-weight: 600;
    line-height: 1.5;
}

/* Korea Situation */
.korea-situation {
    margin-bottom: 3rem;
}

.korea-situation h3 {
    text-align: center;
    font-size: 2.2rem;
    color: #2c3e50;
    margin-bottom: 2.5rem;
    font-weight: 700;
}

.korea-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.korea-stat-card {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.95) 0%, 
        rgba(248, 249, 250, 0.95) 100%);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transition: all 0.4s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.korea-stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #dc3545, #e74c3c, #c0392b);
}

.korea-stat-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

.korea-stat-card h4 {
    color: #2c3e50;
    font-size: 1.6rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.korea-stat-card h4 i {
    color: #dc3545;
    font-size: 2rem;
}

.stat-details .big-number {
    font-size: 3.5rem;
    font-weight: 900;
    color: #dc3545;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

.stat-details .description {
    font-size: 1.1rem;
    color: #721c24;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.stat-details ul {
    list-style: none;
}

.stat-details li {
    position: relative;
    padding-left: 1.8rem;
    margin-bottom: 0.8rem;
    color: #555;
    line-height: 1.6;
}

.stat-details li::before {
    content: "🟠";
    position: absolute;
    left: 0;
    font-size: 1.1rem;
}

/* Impact Analysis */
.impact-analysis {
    margin-bottom: 3rem;
}

.impact-analysis h3 {
    text-align: center;
    font-size: 2.2rem;
    color: #2c3e50;
    margin-bottom: 2.5rem;
    font-weight: 700;
}

.impact-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.impact-category {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.95) 0%, 
        rgba(248, 249, 250, 0.95) 100%);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transition: all 0.4s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.impact-category:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

.impact-category h4 {
    color: #2c3e50;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.impact-category h4 i {
    color: #667eea;
    font-size: 1.8rem;
}

.impact-category ul {
    list-style: none;
}

.impact-category li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
    color: #555;
    line-height: 1.6;
}

.impact-category li::before {
    content: "💥";
    position: absolute;
    left: 0;
    font-size: 1.1rem;
}

/* Future Trends */
.future-trends {
    margin-bottom: 3rem;
}

.future-trends h3 {
    text-align: center;
    font-size: 2.2rem;
    color: #2c3e50;
    margin-bottom: 2.5rem;
    font-weight: 700;
}

.trend-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.trend-card {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.95) 0%, 
        rgba(248, 249, 250, 0.95) 100%);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    text-align: center;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transition: all 0.4s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.trend-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #17a2b8, #20c997, #28a745);
}

.trend-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

.trend-card i {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #17a2b8, #20c997, #28a745);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: trendIconPulse 2.5s ease-in-out infinite;
}

@keyframes trendIconPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.trend-card h4 {
    color: #2c3e50;
    font-size: 1.4rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.trend-card p {
    color: #666;
    line-height: 1.6;
    font-size: 1rem;
}

/* Response Necessity */
.response-necessity {
    margin-bottom: 3rem;
}

.response-necessity h3 {
    text-align: center;
    font-size: 2.2rem;
    color: #2c3e50;
    margin-bottom: 2.5rem;
    font-weight: 700;
}

.necessity-points {
    display: grid;
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.necessity-item {
    display: flex;
    align-items: flex-start;
    gap: 2rem;
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.95) 0%, 
        rgba(248, 249, 250, 0.95) 100%);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.necessity-item:hover {
    transform: translateX(15px);
}

/* Responsive adjustments for lesson 2 */
@media (min-width: 1200px) {
    .type-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 800px;
        gap: 2rem;
    }
    
    .type-card {
        min-height: 380px;
    }
}

@media (min-width: 768px) and (max-width: 1199px) {
    .type-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
        max-width: 700px;
    }
    
    .type-card {
        min-height: 380px;
    }
}

@media (max-width: 767px) {
    .type-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        max-width: 400px;
    }
    
    .type-card {
        min-height: 380px;
    }
}

/* 레슨 요약 스타일 */
.lesson-summary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #f5576c 75%, #4facfe 100%);
    padding: 3rem;
    border-radius: 20px;
    margin: 3rem 0;
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

.lesson-summary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
}

.lesson-summary > * {
    position: relative;
    z-index: 1;
}

.lesson-summary h3 {
    font-size: 2.2rem;
    margin-bottom: 2rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.summary-box {
    background: rgba(255,255,255,0.2);
    padding: 2.5rem;
    border-radius: 15px;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.3);
}

.summary-box h4 {
    font-size: 1.6rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
    color: #fff;
}

.summary-box ul {
    list-style: none;
    padding: 0;
    text-align: left;
}

.summary-box li {
    padding: 1rem 0;
    font-size: 1.1rem;
    position: relative;
    padding-left: 2rem;
    line-height: 1.6;
    border-bottom: 1px solid rgba(255,255,255,0.2);
}

.summary-box li:last-child {
    border-bottom: none;
}

.summary-box li::before {
    content: '⭐';
    position: absolute;
    left: 0;
    top: 1rem;
    font-size: 1.2rem;
}

/* 네비게이션 스타일 */
.lesson-navigation {
    background: rgba(255,255,255,0.95);
    padding: 2rem 0;
    border-top: 1px solid rgba(102, 126, 234, 0.2);
    backdrop-filter: blur(10px);
}

.nav-buttons {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    gap: 2rem;
}

.nav-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 1.5rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
    flex: 1;
    max-width: 400px;
}

.nav-btn.prev {
    text-align: left;
}

.nav-btn.next {
    text-align: right;
    background: linear-gradient(135deg, #f5576c, #f093fb);
    box-shadow: 0 8px 25px rgba(245, 87, 108, 0.3);
}

.nav-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.2);
}

.progress-bar {
    background: rgba(255,255,255,0.3);
    height: 8px;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.progress {
    background: linear-gradient(90deg, #667eea, #764ba2, #f093fb);
    height: 100%;
    border-radius: 10px;
    transition: width 0.5s ease;
    animation: progressShine 2s ease-in-out infinite;
}

@keyframes progressShine {
    0% { box-shadow: 0 0 5px rgba(102, 126, 234, 0.5); }
    50% { box-shadow: 0 0 20px rgba(102, 126, 234, 0.8); }
    100% { box-shadow: 0 0 5px rgba(102, 126, 234, 0.5); }
}

.progress-text {
    text-align: center;
    color: #667eea;
    font-weight: 600;
    font-size: 1.1rem;
}

.necessity-number {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: bold;
    margin-right: 2rem;
    flex-shrink: 0;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.necessity-content h4 {
    color: #333;
    font-size: 1.4rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.necessity-content p {
    color: #666;
    line-height: 1.6;
    font-size: 1.1rem;
}

/* 반응형 추가 스타일 */
@media (max-width: 768px) {
    .nav-buttons {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-btn {
        max-width: none;
        text-align: center;
    }
    
    .lesson-summary {
        padding: 2rem;
    }
    
    .summary-box {
        padding: 1.5rem;
    }
}

/* Enhanced Deepfake Types Styles */
.deepfake-types-enhanced {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.deepfake-type-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    border: 2px solid transparent;
}

.deepfake-type-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 20px 20px 0 0;
}

.deepfake-type-card.video-type::before {
    background: linear-gradient(90deg, #f093fb, #f5576c);
}

.deepfake-type-card.audio-type::before {
    background: linear-gradient(90deg, #ff6b6b, #ee5a24);
}

.deepfake-type-card.image-type::before {
    background: linear-gradient(90deg, #4facfe, #00f2fe);
}

.deepfake-type-card.text-type::before {
    background: linear-gradient(90deg, #667eea, #764ba2);
}

.deepfake-type-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px rgba(0,0,0,0.15);
    border-color: rgba(102, 126, 234, 0.3);
}

.type-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.type-icon {
    width: 60px;
    height: 60px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    font-size: 1.8rem;
    box-shadow: 0 8px 16px rgba(102, 126, 234, 0.3);
    transition: all 0.3s ease;
}

.video-type .type-icon {
    background: linear-gradient(135deg, #f093fb, #f5576c);
    box-shadow: 0 8px 16px rgba(240, 147, 251, 0.3);
}

.audio-type .type-icon {
    background: linear-gradient(135deg, #ff6b6b, #ee5a24);
    box-shadow: 0 8px 16px rgba(255, 107, 107, 0.3);
}

.image-type .type-icon {
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    box-shadow: 0 8px 16px rgba(79, 172, 254, 0.3);
}

.text-type .type-icon {
    background: linear-gradient(135deg, #667eea, #764ba2);
    box-shadow: 0 8px 16px rgba(102, 126, 234, 0.3);
}

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

.type-meta h4 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.difficulty-badge {
    display: inline-block;
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.difficulty-badge.critical {
    background: linear-gradient(135deg, #ff6b6b, #ee5a24);
    color: white;
    box-shadow: 0 4px 8px rgba(255, 107, 107, 0.3);
}

.difficulty-badge.high {
    background: linear-gradient(135deg, #f093fb, #f5576c);
    color: white;
    box-shadow: 0 4px 8px rgba(240, 147, 251, 0.3);
}

.difficulty-badge.medium {
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    color: white;
    box-shadow: 0 4px 8px rgba(79, 172, 254, 0.3);
}

.type-description {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #555;
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.type-stats {
    background: rgba(246, 248, 250, 0.8);
    border-radius: 12px;
    padding: 1.2rem;
    margin-bottom: 1.5rem;
}

.stat-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.stat-item:last-child {
    margin-bottom: 0;
}

.stat-label {
    font-weight: 600;
    color: #2c3e50;
    font-size: 0.95rem;
}

.stat-bar {
    flex: 1;
    height: 8px;
    background: rgba(0,0,0,0.1);
    border-radius: 4px;
    margin: 0 1rem;
    overflow: hidden;
}

.stat-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 4px;
    transition: width 1s ease;
}

.video-type .stat-fill {
    background: linear-gradient(90deg, #f093fb, #f5576c);
}

.audio-type .stat-fill {
    background: linear-gradient(90deg, #ff6b6b, #ee5a24);
}

.image-type .stat-fill {
    background: linear-gradient(90deg, #4facfe, #00f2fe);
}

.text-type .stat-fill {
    background: linear-gradient(90deg, #667eea, #764ba2);
}

.stat-value {
    font-weight: 700;
    color: #e74c3c;
    font-size: 0.9rem;
}

.stat-text {
    font-weight: 600;
    color: #3498db;
    font-size: 0.9rem;
}

.type-examples {
    margin-bottom: 1.5rem;
}

.type-examples h5 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    font-weight: 700;
    color: #e74c3c;
    margin-bottom: 1rem;
}

.type-examples ul {
    list-style: none;
    padding: 0;
}

.type-examples li {
    background: rgba(231, 76, 60, 0.05);
    border-left: 4px solid #e74c3c;
    padding: 0.8rem 1rem;
    margin-bottom: 0.5rem;
    border-radius: 0 8px 8px 0;
    font-size: 0.95rem;
    line-height: 1.5;
    transition: all 0.3s ease;
}

.type-examples li:hover {
    background: rgba(231, 76, 60, 0.1);
    transform: translateX(5px);
}

.type-examples li strong {
    color: #c0392b;
    font-weight: 700;
}

.detection-hints h5 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    font-weight: 700;
    color: #27ae60;
    margin-bottom: 1rem;
}

.hint-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.hint-tag {
    background: linear-gradient(135deg, #27ae60, #2ecc71);
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: 0 4px 8px rgba(39, 174, 96, 0.2);
    transition: all 0.3s ease;
}

.hint-tag:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(39, 174, 96, 0.3);
}

.deepfake-warning-box {
    background: linear-gradient(135deg, rgba(231, 76, 60, 0.1), rgba(192, 57, 43, 0.1));
    border: 2px solid #e74c3c;
    border-radius: 20px;
    padding: 2rem;
    margin-top: 2rem;
    position: relative;
    overflow: hidden;
}

.deepfake-warning-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(231, 76, 60, 0.05) 10px,
        rgba(231, 76, 60, 0.05) 20px
    );
    animation: warningPattern 20s linear infinite;
    z-index: 0;
}

@keyframes warningPattern {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.warning-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.warning-header i {
    font-size: 2rem;
    color: #e74c3c;
    animation: warningPulse 2s infinite;
}

.warning-header h4 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #c0392b;
    margin: 0;
}

.warning-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.warning-stat-item {
    text-align: center;
    background: rgba(255, 255, 255, 0.9);
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: 0 8px 20px rgba(231, 76, 60, 0.1);
    transition: all 0.3s ease;
}

.warning-stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(231, 76, 60, 0.2);
}

.warning-stat-item .stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: #e74c3c;
    line-height: 1;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.warning-stat-item .stat-desc {
    font-size: 0.9rem;
    color: #555;
    font-weight: 600;
    line-height: 1.3;
}

.warning-note {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 1.1rem;
    color: #2c3e50;
    font-weight: 500;
    position: relative;
    z-index: 1;
    background: rgba(255, 255, 255, 0.9);
    padding: 1rem;
    border-radius: 10px;
    margin: 0;
}

.warning-note i {
    color: #3498db;
    font-size: 1.3rem;
}

@media (max-width: 768px) {
    .deepfake-types-enhanced {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .deepfake-type-card {
        padding: 1.5rem;
    }
    
    .type-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .type-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    .warning-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .warning-stat-item .stat-number {
        font-size: 2rem;
    }
    
    .hint-tags {
        justify-content: center;
    }
}

/* Enhanced Deepfake Process Styles */
.deepfake-process-enhanced {
    margin: 3rem 0;
}

.deepfake-process-enhanced h3 {
    font-size: 2.2rem;
    color: #2c3e50;
    margin-bottom: 2rem;
    text-align: center;
    font-weight: 700;
}

.process-overview {
    margin-bottom: 3rem;
}

.process-warning {
    background: linear-gradient(135deg, rgba(231, 76, 60, 0.1), rgba(192, 57, 43, 0.05));
    border: 2px solid #e74c3c;
    border-radius: 15px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.process-warning i {
    font-size: 2rem;
    color: #e74c3c;
    animation: warningPulse 2s infinite;
}

.process-warning p {
    margin: 0;
    font-size: 1.1rem;
    color: #2c3e50;
    font-weight: 500;
}

.pipeline-header {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 2rem;
    border-radius: 20px 20px 0 0;
    text-align: center;
}

.pipeline-header h4 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.pipeline-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.pipeline-stats .stat-item {
    font-size: 1rem;
    font-weight: 500;
}

.pipeline-stats strong {
    color: #ffd700;
    font-weight: 700;
}

.process-pipeline {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
    overflow: hidden;
    margin-bottom: 3rem;
}

.process-step {
    display: flex;
    padding: 2.5rem;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.process-step:last-child {
    border-bottom: none;
}

.process-step:hover {
    background: rgba(102, 126, 234, 0.02);
}

.step-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-right: 2rem;
}

.step-number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
    position: relative;
    z-index: 2;
}

.step-line {
    width: 3px;
    height: 100px;
    background: linear-gradient(180deg, #667eea, #764ba2);
    margin-top: 1rem;
    border-radius: 2px;
}

.process-step:last-child .step-line {
    display: none;
}

.step-content {
    flex: 1;
}

.step-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.step-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: linear-gradient(135deg, #f093fb, #f5576c);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    box-shadow: 0 6px 20px rgba(240, 147, 251, 0.3);
}

.step-info h4 {
    font-size: 1.6rem;
    color: #2c3e50;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.step-meta {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.duration {
    background: rgba(52, 152, 219, 0.1);
    color: #3498db;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.9rem;
    font-weight: 600;
}

.difficulty {
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.difficulty.easy {
    background: rgba(39, 174, 96, 0.1);
    color: #27ae60;
}

.difficulty.medium {
    background: rgba(243, 156, 18, 0.1);
    color: #f39c12;
}

.difficulty.hard {
    background: rgba(231, 76, 60, 0.1);
    color: #e74c3c;
}

.step-details {
    background: rgba(246, 248, 250, 0.5);
    border-radius: 15px;
    padding: 2rem;
}

.detail-section {
    margin-bottom: 2rem;
}

.detail-section:last-child {
    margin-bottom: 0;
}

.detail-section h5 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.2rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.detail-section ul {
    list-style: none;
    padding: 0;
}

.detail-section li {
    background: rgba(255, 255, 255, 0.8);
    padding: 0.8rem 1rem;
    margin-bottom: 0.5rem;
    border-radius: 8px;
    border-left: 4px solid #3498db;
    font-size: 0.95rem;
    line-height: 1.5;
    transition: all 0.3s ease;
}

.detail-section li:hover {
    background: rgba(52, 152, 219, 0.05);
    transform: translateX(5px);
}

.data-requirements {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.data-type {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.9);
    padding: 1rem;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.data-label {
    font-weight: 600;
    color: #2c3e50;
    min-width: 100px;
}

.data-amount {
    font-weight: 700;
    color: #e74c3c;
    min-width: 100px;
}

.data-progress {
    flex: 1;
    height: 8px;
    background: rgba(0,0,0,0.1);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #3498db, #2ecc71);
    border-radius: 4px;
    transition: width 0.8s ease;
}

.danger-alert {
    background: linear-gradient(135deg, rgba(39, 174, 96, 0.1), rgba(46, 204, 113, 0.05));
    border: 2px solid #27ae60;
    border-radius: 10px;
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-top: 1.5rem;
}

.danger-alert i {
    color: #27ae60;
    font-size: 1.3rem;
}

.danger-alert span {
    color: #2c3e50;
    font-weight: 500;
}

.training-process {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.training-stage h5 {
    color: #8e44ad;
}

.gan-process {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 1.5rem;
    align-items: center;
    margin: 1.5rem 0;
}

.gan-component {
    background: rgba(255, 255, 255, 0.9);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.gan-component:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.gan-component.generator {
    border-top: 4px solid #3498db;
}

.gan-component.discriminator {
    border-top: 4px solid #e74c3c;
}

.gan-component h6 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.gan-component p {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.component-stats span {
    font-size: 0.85rem;
    color: #34495e;
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: block;
}

.accuracy-bar {
    height: 6px;
    background: rgba(0,0,0,0.1);
    border-radius: 3px;
    overflow: hidden;
}

.accuracy-fill {
    height: 100%;
    background: linear-gradient(90deg, #3498db, #2ecc71);
    border-radius: 3px;
    transition: width 1s ease;
}

.accuracy-fill.red {
    background: linear-gradient(90deg, #e74c3c, #c0392b);
}

.vs-indicator {
    font-size: 1.5rem;
    font-weight: 900;
    color: #f39c12;
    background: rgba(243, 156, 18, 0.1);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid #f39c12;
    animation: pulse 2s infinite;
}

.resource-requirements {
    margin-top: 2rem;
}

.resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.resource-item {
    background: rgba(255, 255, 255, 0.9);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.resource-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

.resource-item i {
    font-size: 2rem;
    color: #9b59b6;
    margin-bottom: 0.8rem;
}

.resource-item span {
    display: block;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 0.3rem;
}

.resource-item small {
    color: #7f8c8d;
    font-size: 0.8rem;
}

.generation-types {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.gen-type {
    background: rgba(255, 255, 255, 0.9);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.05);
}

.gen-type h5 {
    color: #8e44ad;
    margin-bottom: 1rem;
}

.gen-process {
    background: rgba(142, 68, 173, 0.05);
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid #8e44ad;
}

.process-item {
    font-weight: 600;
    color: #2c3e50;
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

.time-estimate {
    color: #e74c3c;
    font-size: 0.85rem;
    font-weight: 700;
}

.quality-factors {
    margin-top: 2rem;
}

.factor-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.factor-item {
    background: rgba(255, 255, 255, 0.9);
    padding: 1rem;
    border-radius: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.factor-name {
    font-weight: 600;
    color: #2c3e50;
}

.factor-impact {
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
}

.factor-impact.high {
    background: rgba(231, 76, 60, 0.1);
    color: #e74c3c;
}

.factor-impact.medium {
    background: rgba(243, 156, 18, 0.1);
    color: #f39c12;
}

.post-processing {
    margin-bottom: 2rem;
}

.processing-steps {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.processing-step {
    background: rgba(255, 255, 255, 0.9);
    padding: 1rem;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.processing-step:hover {
    background: rgba(52, 152, 219, 0.05);
    transform: translateX(5px);
}

.step-name {
    font-weight: 700;
    color: #2c3e50;
}

.step-desc {
    color: #7f8c8d;
    font-size: 0.9rem;
}

.distribution-methods {
    margin-top: 2rem;
}

.distribution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.dist-method {
    background: rgba(255, 255, 255, 0.9);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.dist-method:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

.dist-method i {
    font-size: 2rem;
    color: #e67e22;
    margin-bottom: 0.8rem;
}

.dist-method span {
    display: block;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 0.3rem;
}

.dist-method small {
    color: #7f8c8d;
    font-size: 0.8rem;
}

.process-summary {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.05));
    border: 2px solid #667eea;
    border-radius: 20px;
    padding: 2.5rem;
    margin-top: 3rem;
}

.summary-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.summary-stat {
    text-align: center;
    background: rgba(255, 255, 255, 0.9);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.summary-stat:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.12);
}

.summary-stat h4 {
    font-size: 1.1rem;
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 600;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: #e74c3c;
    line-height: 1;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-note {
    color: #7f8c8d;
    font-size: 0.8rem;
    font-weight: 500;
}

.prevention-reminder {
    background: rgba(39, 174, 96, 0.05);
    border: 2px solid #27ae60;
    border-radius: 15px;
    padding: 2rem;
}

.reminder-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.reminder-header i {
    font-size: 2rem;
    color: #27ae60;
}

.reminder-header h4 {
    font-size: 1.5rem;
    color: #27ae60;
    font-weight: 700;
    margin: 0;
}

.prevention-points {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.prevention-point {
    background: rgba(255, 255, 255, 0.9);
    padding: 1rem;
    border-radius: 10px;
    font-size: 1rem;
    color: #2c3e50;
    border-left: 4px solid #27ae60;
    transition: all 0.3s ease;
}

.prevention-point:hover {
    background: rgba(39, 174, 96, 0.05);
    transform: translateX(5px);
}

.prevention-point strong {
    color: #27ae60;
}

@media (max-width: 768px) {
    .process-step {
        flex-direction: column;
        padding: 2rem 1.5rem;
    }
    
    .step-indicator {
        margin-right: 0;
        margin-bottom: 1.5rem;
    }
    
    .step-line {
        display: none;
    }
    
    .step-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .step-meta {
        gap: 1rem;
    }
    
    .gan-process {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .vs-indicator {
        width: 40px;
        height: 40px;
        font-size: 1rem;
        justify-self: center;
    }
    
    .pipeline-stats {
        gap: 1.5rem;
    }
    
    .summary-stats {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .stat-value {
        font-size: 2rem;
    }
}

/* 딥페이크 생성 과정 Compact 스타일 */
.deepfake-process-compact {
    margin-top: 2rem;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    border-radius: 16px;
    border: 1px solid #2d3748;
    overflow: hidden;
}

.process-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 1.5rem;
    text-align: center;
    position: relative;
}

.process-header h3 {
    color: white;
    font-size: 2.3rem;
    margin: 0 0 1rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.process-warning-compact {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    backdrop-filter: blur(10px);
}

.process-flow {
    padding: 2rem 1.5rem;
}

.flow-header {
    text-align: center;
    margin-bottom: 2rem;
}

.flow-header h4 {
    color: #e2e8f0;
    font-size: 2.0rem;
    margin-bottom: 1rem;
}

.flow-stats {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.flow-stats span {
    background: #4a5568;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    color: #e2e8f0;
    font-size: 0.85rem;
    font-weight: 500;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.process-card {
    background: #2d3748;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid #4a5568;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    min-height: 400px;
    display: flex;
    flex-direction: column;
}

.process-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.4);
}

.card-header {
    background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.2rem;
    border-bottom: 2px solid #667eea;
}

.step-badge {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 1.3rem;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.step-title h4 {
    color: #e2e8f0;
    font-size: 1.5rem;
    margin: 0 0 0.4rem 0;
    font-weight: 600;
}

.step-time {
    color: #a0aec0;
    font-size: 0.9rem;
    font-weight: 500;
}

.card-body {
    padding: 1.8rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.dual-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    flex: 1;
}

.left-col h5, .right-col h5 {
    color: #e2e8f0;
    font-size: 1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.compact-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.compact-list li {
    color: #cbd5e0;
    font-size: 0.9rem;
    padding: 0.4rem 0;
    border-bottom: 1px solid rgba(160, 174, 192, 0.1);
    line-height: 1.4;
}

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

.data-bars {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.data-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 0.9rem;
}

.data-item span {
    color: #e2e8f0;
    min-width: 60px;
    font-size: 0.85rem;
    font-weight: 500;
}

.mini-bar {
    flex: 1;
    height: 6px;
    background: #1a202c;
    border-radius: 3px;
    overflow: hidden;
}

.mini-bar .fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 3px;
}

.data-item small {
    color: #a0aec0;
    font-size: 0.8rem;
    min-width: 70px;
    text-align: right;
    font-weight: 500;
}

.protection-tip {
    background: rgba(72, 187, 120, 0.1);
    color: #81c784;
    padding: 1rem;
    border-radius: 10px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    border-left: 4px solid #48bb78;
    margin-top: auto;
}

.training-compact {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    flex: 1;
}

.training-phases {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.phase {
    background: #1a202c;
    padding: 1.2rem;
    border-radius: 10px;
}

.phase h5 {
    color: #e2e8f0;
    font-size: 1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.mini-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mini-list li {
    color: #cbd5e0;
    font-size: 0.85rem;
    padding: 0.3rem 0;
    line-height: 1.3;
}

.gan-mini {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.gen-disc {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
}

.gen, .disc {
    color: #e2e8f0;
    font-weight: 600;
}

.vs {
    background: #ff6b6b;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: bold;
}

.accuracy-display {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    font-weight: bold;
}

.acc-gen {
    color: #48bb78;
}

.acc-disc {
    color: #fc8181;
}

.resource-mini {
    display: flex;
    justify-content: space-around;
    gap: 0.8rem;
    margin-top: 1.2rem;
    padding: 1rem;
    background: #1a202c;
    border-radius: 10px;
}

.res-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    text-align: center;
}

.res-item i {
    color: #667eea;
    font-size: 1.2rem;
}

.res-item span {
    color: #e2e8f0;
    font-size: 0.8rem;
    font-weight: 600;
}

.generation-compact {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    flex: 1;
}

.gen-types-mini {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.gen-type-item {
    background: #1a202c;
    padding: 1.2rem;
    border-radius: 10px;
}

.type-header {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
}

.type-header i {
    color: #667eea;
    font-size: 1.1rem;
}

.type-header span {
    color: #e2e8f0;
    font-size: 1rem;
    font-weight: 600;
}

.type-flow {
    color: #cbd5e0;
    font-size: 0.85rem;
    margin: 0.5rem 0;
    padding: 0.8rem;
    background: #2d3748;
    border-radius: 8px;
    line-height: 1.3;
}

.type-time {
    color: #81c784;
    font-size: 0.8rem;
    font-weight: bold;
}

.quality-indicators {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.quality-factor {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 0.9rem;
}

.quality-factor span {
    color: #cbd5e0;
    font-weight: 500;
}

.impact {
    padding: 0.3rem 0.8rem;
    border-radius: 12px;
    font-size: 0.8rem;
    color: white;
    font-weight: bold;
}

.impact.high {
    background: #e53e3e;
}

.impact.medium {
    background: #d69e2e;
}

.post-compact {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    flex: 1;
}

.post-steps h5 {
    color: #e2e8f0;
    font-size: 1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.step-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.tag {
    background: #4a5568;
    color: #e2e8f0;
    padding: 0.5rem 1rem;
    border-radius: 18px;
    font-size: 0.8rem;
    font-weight: 600;
}

.distribution-compact h5 {
    color: #e2e8f0;
    font-size: 1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.dist-grid-mini {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
}

.dist-item {
    background: #1a202c;
    padding: 0.8rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    text-align: center;
}

.dist-item i {
    color: #667eea;
    font-size: 1.1rem;
}

.dist-item span {
    color: #e2e8f0;
    font-size: 0.9rem;
    font-weight: 600;
}

.prevention-summary {
    background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 1.5rem;
    color: white;
}

.summary-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    justify-content: center;
}

.summary-header h4 {
    font-size: 1.5rem;
    margin: 0;
}

.prevention-steps {
    display: flex;
    justify-content: space-around;
    gap: 1rem;
    flex-wrap: wrap;
}

.prev-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    min-width: 120px;
}

.prev-number {
    width: 30px;
    height: 30px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.9rem;
}

.prev-text {
    font-size: 0.8rem;
    text-align: center;
    font-weight: 500;
}

/* 반응형 디자인 */
@media (max-width: 1024px) {
    .process-grid {
        gap: 1.5rem;
    }
    
    .process-card {
        min-height: 350px;
    }
    
    .card-header {
        padding: 1.2rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
}

@media (max-width: 768px) {
    .process-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        max-width: 100%;
    }
    
    .process-card {
        min-height: auto;
    }
    
    .dual-column {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }
    
    .training-phases {
        grid-template-columns: 1fr;
    }
    
    .flow-stats {
        gap: 1rem;
        flex-direction: column;
        align-items: center;
    }
    
    .prevention-steps {
        flex-direction: column;
        gap: 1rem;
    }
    
    .prev-step {
        flex-direction: row;
        text-align: left;
        justify-content: center;
    }
    
    .dist-grid-mini {
        grid-template-columns: 1fr;
    }
    
    .quality-indicators {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .process-flow {
        padding: 1.5rem 1rem;
    }
    
    .step-badge {
        width: 40px;
        height: 40px;
        font-size: 1.1rem;
    }
    
    .step-title h4 {
        font-size: 1.1rem;
    }
}

/* 설명용 이미지(다이어그램, 인포그래픽 등) 공통 스타일 */
.lesson-figure {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 2.5rem 0;
    gap: 0.7rem;
}

.lesson-figure img,
.lesson-img {
    max-width: 420px;
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(60,60,100,0.10), 0 1.5px 6px rgba(0,0,0,0.06);
    background: #fff;
    border: 1px solid #e5e7eb;
    transition: box-shadow 0.2s;
}

.lesson-figure img:hover,
.lesson-img:hover {
    box-shadow: 0 8px 32px rgba(60,60,100,0.18), 0 3px 12px rgba(0,0,0,0.10);
}

.lesson-figcaption,
.lesson-caption {
    font-size: 1rem;
    color: #666;
    margin-top: 0.5rem;
    text-align: center;
    line-height: 1.5;
    max-width: 420px;
}

/* 이미지 크기 변형 클래스들 */
.lesson-img-small {
    max-width: 280px;
}

.lesson-img-medium {
    max-width: 420px;
}

.lesson-img-large {
    max-width: 600px;
}

.lesson-img-full {
    max-width: 100%;
}

/* 이미지 정렬 클래스들 */
.lesson-figure-left {
    align-items: flex-start;
    text-align: left;
}

.lesson-figure-right {
    align-items: flex-end;
    text-align: right;
}

.lesson-figure-center {
    align-items: center;
    text-align: center;
}

/* 특별한 효과 클래스들 */
.lesson-img-highlight {
    border: 3px solid #667eea;
    box-shadow: 0 4px 24px rgba(102, 126, 234, 0.2), 0 1.5px 6px rgba(0,0,0,0.06);
}

.lesson-img-highlight:hover {
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.3), 0 3px 12px rgba(0,0,0,0.10);
}

.lesson-img-rounded {
    border-radius: 50%;
}

.lesson-img-shadow-heavy {
    box-shadow: 0 12px 40px rgba(0,0,0,0.15), 0 4px 16px rgba(0,0,0,0.08);
}

.lesson-img-shadow-heavy:hover {
    box-shadow: 0 20px 60px rgba(0,0,0,0.25), 0 8px 24px rgba(0,0,0,0.12);
}

/* 반응형 디자인 */
@media (max-width: 600px) {
    .lesson-figure img,
    .lesson-img {
        max-width: 100%;
        border-radius: 10px;
    }
    
    .lesson-figcaption,
    .lesson-caption {
        font-size: 0.95rem;
        max-width: 100%;
    }
    
    .lesson-img-small,
    .lesson-img-medium,
    .lesson-img-large {
        max-width: 100%;
    }
    
    .lesson-figure-left,
    .lesson-figure-right {
        align-items: center;
        text-align: center;
    }
}

/* 이미지 갤러리 스타일 (여러 이미지를 나란히 배치할 때) */
.lesson-gallery {
    display: flex;
    gap: 1rem;
    margin: 2rem 0;
    justify-content: center;
    flex-wrap: wrap;
}

.lesson-gallery .lesson-figure {
    margin: 0;
    flex: 1;
    min-width: 200px;
    max-width: 300px;
}

@media (max-width: 768px) {
    .lesson-gallery {
        flex-direction: column;
        align-items: center;
    }
    
    .lesson-gallery .lesson-figure {
        max-width: 100%;
    }
}

.video-container {
    max-width: 1000px;
    margin: 40px auto;
    padding: 0 20px;
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 비율 */
    height: 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-wrapper:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.15);
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* 기존 CSS 끝에 추가 */

/* 보안 수칙 섹션 - lesson2 스타일 적용 */
.security-rules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.security-rule-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9ff 100%);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 8px 32px rgba(59, 130, 246, 0.1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(59, 130, 246, 0.1);
    position: relative;
    overflow: hidden;
}

.security-rule-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.security-rule-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 60px rgba(59, 130, 246, 0.2);
    border-color: var(--primary-color);
}

.rule-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), #6366f1);
    border-radius: 20px;
    margin-bottom: 1.5rem;
    color: white;
    font-size: 1.8rem;
    position: relative;
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.3);
}

.rule-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(255,255,255,0.3), transparent);
}

.security-rule-card h3 {
    color: #1e293b;
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.025em;
}

.rule-description {
    position: relative;
}

.rule-summary {
    background: linear-gradient(135deg, #f8fafc, #f1f5f9);
    padding: 1.25rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
    margin-bottom: 1.5rem !important;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.rule-description p {
    margin-bottom: 1rem;
    line-height: 1.7;
    color: #475569;
    font-size: 0.95rem;
}

.rule-description strong {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1rem;
}

.rule-description ul {
    margin: 1rem 0;
    padding: 0;
    list-style: none;
}

.rule-description li {
    margin-bottom: 0.75rem;
    color: #64748b;
    line-height: 1.6;
    font-size: 0.9rem;
    position: relative;
    padding-left: 1.5rem;
}

.rule-description li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
    font-size: 0.9rem;
}

/* lesson2.html 스타일 요소들 추가 */
.rule-header {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.rule-meta {
    flex: 1;
}

.rule-meta h3 {
    margin-bottom: 1rem;
    color: #1e293b;
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.3;
}

.rule-badges {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* 배지 시스템 */
.difficulty-badge, .effectiveness-badge, .risk-badge, .damage-badge, .trend-badge {
    padding: 0.4rem 0.8rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.difficulty-badge.easy { background: linear-gradient(135deg, #10b981, #059669); color: white; }
.difficulty-badge.medium { background: linear-gradient(135deg, #f59e0b, #d97706); color: white; }
.difficulty-badge.hard { background: linear-gradient(135deg, #ef4444, #dc2626); color: white; }
.difficulty-badge.extreme { background: linear-gradient(135deg, #7c2d12, #451a03); color: white; }
.difficulty-badge.critical { background: linear-gradient(135deg, #991b1b, #7f1d1d); color: white; }

.effectiveness-badge.high { background: linear-gradient(135deg, #059669, #047857); color: white; }
.effectiveness-badge.critical { background: linear-gradient(135deg, #dc2626, #991b1b); color: white; }

.risk-badge.critical { background: linear-gradient(135deg, #dc2626, #991b1b); color: white; }
.damage-badge.high { background: linear-gradient(135deg, #ea580c, #c2410c); color: white; }
.damage-badge.extreme { background: linear-gradient(135deg, #7c2d12, #451a03); color: white; }

.trend-badge.rising { background: linear-gradient(135deg, #dc2626, #991b1b); color: white; }
.trend-badge.critical { background: linear-gradient(135deg, #7c2d12, #451a03); color: white; }

/* 통계 바 */
.rule-stats {
    margin: 1.5rem 0;
    padding: 1.25rem;
    background: linear-gradient(135deg, #f8fafc, #f1f5f9);
    border-radius: 12px;
    border: 1px solid rgba(148, 163, 184, 0.2);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.stat-item:last-child {
    margin-bottom: 0;
}

.stat-label {
    min-width: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #475569;
}

.stat-bar {
    flex: 1;
    height: 8px;
    background: #e2e8f0;
    border-radius: 6px;
    overflow: hidden;
    position: relative;
}

.stat-fill {
    height: 100%;
    border-radius: 6px;
    transition: width 0.8s ease;
    position: relative;
}

.stat-fill.easy { background: linear-gradient(90deg, #10b981, #059669); }
.stat-fill.medium { background: linear-gradient(90deg, #f59e0b, #d97706); }
.stat-fill.high { background: linear-gradient(90deg, #3b82f6, #2563eb); }
.stat-fill.critical { background: linear-gradient(90deg, #dc2626, #991b1b); }
.stat-fill.danger { background: linear-gradient(90deg, #ef4444, #dc2626); }
.stat-fill.extreme { background: linear-gradient(90deg, #7c2d12, #451a03); }
.stat-fill.safe { background: linear-gradient(90deg, #059669, #047857); }
.stat-fill.warning { background: linear-gradient(90deg, #f59e0b, #d97706); }

.stat-value {
    min-width: 60px;
    text-align: right;
    font-size: 0.8rem;
    font-weight: 700;
    color: #1e293b;
}

/* 실천 방법 가이드 */
.implementation-guide {
    margin: 1.5rem 0;
}

.implementation-guide h5 {
    color: #374151;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.method-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.method-tag {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid;
    transition: all 0.3s ease;
    cursor: default;
}

.method-tag.primary {
    background: linear-gradient(135deg, #dbeafe, #bfdbfe);
    border-color: #3b82f6;
    color: #1e40af;
}

.method-tag.secondary {
    background: linear-gradient(135deg, #f3f4f6, #e5e7eb);
    border-color: #6b7280;
    color: #374151;
}

.method-tag.safe {
    background: linear-gradient(135deg, #dcfce7, #bbf7d0);
    border-color: #16a34a;
    color: #15803d;
}

.method-tag.warning {
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    border-color: #d97706;
    color: #92400e;
}

.method-tag.danger {
    background: linear-gradient(135deg, #fee2e2, #fecaca);
    border-color: #dc2626;
    color: #991b1b;
}

.method-tag.critical {
    background: linear-gradient(135deg, #7f1d1d, #451a03);
    border-color: #7f1d1d;
    color: white;
}

/* 보안 팁 */
.security-tip {
    margin-top: 1.5rem;
    padding: 1rem 1.25rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    font-weight: 600;
    border-left: 4px solid;
}

.security-tip.safe {
    background: linear-gradient(135deg, #ecfdf5, #d1fae5);
    border-left-color: #059669;
    color: #065f46;
}

.security-tip.warning {
    background: linear-gradient(135deg, #fffbeb, #fef3c7);
    border-left-color: #d97706;
    color: #92400e;
}

.security-tip.danger {
    background: linear-gradient(135deg, #fef2f2, #fee2e2);
    border-left-color: #dc2626;
    color: #991b1b;
}

.security-tip.critical {
    background: linear-gradient(135deg, #7f1d1d, #451a03);
    border-left-color: #7f1d1d;
    color: white;
}

.security-tip.extreme {
    background: linear-gradient(135deg, #1e1b4b, #312e81);
    border-left-color: #3730a3;
    color: #e0e7ff;
}

/* 카드 타입별 색상 */
.critical-rule {
    border-top: 4px solid #dc2626;
}

.critical-rule .rule-icon {
    background: linear-gradient(135deg, #dc2626, #991b1b);
}

.high-rule {
    border-top: 4px solid #3b82f6;
}

.high-rule .rule-icon {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.medium-rule {
    border-top: 4px solid #f59e0b;
}

.medium-rule .rule-icon {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.danger-rule {
    border-top: 4px solid #ef4444;
}

.danger-rule .rule-icon {
    background: linear-gradient(135deg, #ef4444, #dc2626);
}

.warning-rule {
    border-top: 4px solid #f59e0b;
}

.warning-rule .rule-icon {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.extreme-rule {
    border-top: 4px solid #7c2d12;
}

.extreme-rule .rule-icon {
    background: linear-gradient(135deg, #7c2d12, #451a03);
}

/* 체크리스트 섹션 - 고급 디자인 */
.checklist-section {
    margin-top: 4rem;
    padding: 3rem 2.5rem;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 50%, #f8fafc 100%);
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
    border: 1px solid rgba(148, 163, 184, 0.2);
    position: relative;
    overflow: hidden;
}

.checklist-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6, #06b6d4);
}

.checklist-section h3 {
    color: #0f172a;
    margin-bottom: 1rem;
    font-size: 2rem;
    text-align: center;
    font-weight: 800;
    letter-spacing: -0.025em;
    text-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.checklist-subtitle {
    text-align: center;
    color: #64748b;
    margin-bottom: 3rem;
    line-height: 1.7;
    font-size: 1.1rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 진행률 바 - 고급 디자인 */
.progress-container {
    margin-bottom: 3rem;
    padding: 2rem;
    background: white;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.1);
}

.progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-weight: 700;
    color: #1e293b;
    font-size: 1.1rem;
}

.progress-bar {
    width: 100%;
    height: 16px;
    background: linear-gradient(90deg, #f1f5f9, #e2e8f0);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6, #06b6d4);
    border-radius: 12px;
    width: 0%;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.progress-fill::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: shimmer 3s infinite;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    right: 2px;
    height: 6px;
    background: linear-gradient(90deg, rgba(255,255,255,0.8), rgba(255,255,255,0.3));
    border-radius: 8px;
}

@keyframes shimmer {
    0% { transform: translateX(-200%); }
    100% { transform: translateX(200%); }
}

/* 체크리스트 아이템들 - 3열 프리미엄 디자인 */
.checklist-items {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.checklist-item {
    padding: 1.75rem 2rem;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: 16px;
    border: 1px solid rgba(148, 163, 184, 0.2);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
    position: relative;
    overflow: hidden;
}

.checklist-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, #3b82f6, #8b5cf6);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.checklist-item:hover {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-color: #3b82f6;
    box-shadow: 0 12px 32px rgba(59, 130, 246, 0.15);
    transform: translateY(-2px);
}

.checklist-item:hover::before {
    transform: scaleY(1);
}

/* 고급 체크박스 디자인 */
.checkbox-container {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 1.05rem;
    line-height: 1.6;
    color: #334155;
    font-weight: 600;
    position: relative;
}

.checkbox-container input {
    display: none;
}

.checkmark {
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    border: 2px solid #cbd5e1;
    border-radius: 8px;
    margin-right: 1.5rem;
    position: relative;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
}

.checkbox-container:hover .checkmark {
    border-color: #3b82f6;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.2);
    transform: scale(1.05);
}

.checkbox-container input:checked ~ .checkmark {
    background: linear-gradient(135deg, #3b82f6, #6366f1);
    border-color: #3b82f6;
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.checkmark::after {
    content: '';
    position: absolute;
    left: 9px;
    top: 5px;
    width: 6px;
    height: 12px;
    border: solid white;
    border-width: 0 3px 3px 0;
    transform: rotate(45deg) scale(0);
    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.checkbox-container input:checked ~ .checkmark::after {
    transform: rotate(45deg) scale(1);
}

.checkbox-container input:checked ~ .checkmark::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(99, 102, 241, 0.2));
    z-index: -1;
    animation: checkmark-glow 0.6s ease-out;
}

@keyframes checkmark-glow {
    0% { transform: scale(0); opacity: 0; }
    50% { transform: scale(1.2); opacity: 1; }
    100% { transform: scale(1); opacity: 0.3; }
}

/* 체크리스트 결과 - 프리미엄 디자인 */
.checklist-result {
    text-align: center;
    padding: 3rem 2.5rem;
    border-radius: 20px;
    margin-top: 3rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
}

.checklist-result::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #10b981, #059669, #047857);
}

.result-excellent {
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 50%, #a7f3d0 100%);
    border: 2px solid rgba(16, 185, 129, 0.3);
    color: #065f46;
    padding: 2.5rem 2rem;
}

.result-excellent::before {
    background: linear-gradient(90deg, #10b981, #059669, #047857);
}

.result-good {
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 50%, #93c5fd 100%);
    border: 2px solid rgba(59, 130, 246, 0.3);
    color: #1e3a8a;
    padding: 2.5rem 2rem;
}

.result-good::before {
    background: linear-gradient(90deg, #3b82f6, #2563eb, #1d4ed8);
}

.result-improvement {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 50%, #fcd34d 100%);
    border: 2px solid rgba(245, 158, 11, 0.3);
    color: #92400e;
    padding: 2.5rem 2rem;
}

.result-improvement::before {
    background: linear-gradient(90deg, #f59e0b, #d97706, #b45309);
}

.checklist-result i {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
    animation: result-icon-bounce 0.8s ease-out;
}

.checklist-result h4 {
    margin-bottom: 1.5rem;
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.checklist-result p {
    margin: 0;
    line-height: 1.8;
    font-size: 1.1rem;
    font-weight: 500;
    max-width: 550px;
    margin-left: auto;
    margin-right: auto;
}

@keyframes result-icon-bounce {
    0% { transform: scale(0) rotate(-180deg); }
    50% { transform: scale(1.2) rotate(-10deg); }
    100% { transform: scale(1) rotate(0deg); }
}

/* 반응형 디자인 - 고급 스타일 */
@media (max-width: 768px) {
    .security-rules-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .security-rule-card {
        padding: 1.5rem;
        margin: 0 0.5rem;
    }
    
    .rule-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .security-rule-card h3 {
        font-size: 1.1rem;
    }
    
    .checklist-section {
        padding: 2rem 1.5rem;
        margin-top: 3rem;
        margin-left: 0.5rem;
        margin-right: 0.5rem;
    }
    
    .checklist-section h3 {
        font-size: 1.5rem;
    }
    
    .progress-container {
        padding: 1.5rem;
    }
    
    .progress-info {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
        font-size: 1rem;
    }
    
    .checklist-items {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .checklist-item {
        padding: 1.25rem 1.5rem;
    }
    
    .checkbox-container {
        font-size: 0.95rem;
    }
    
    .checkmark {
        width: 24px;
        height: 24px;
        margin-right: 1rem;
    }
    
    .checkmark::after {
        left: 7px;
        top: 3px;
        width: 5px;
        height: 10px;
        border-width: 0 2px 2px 0;
    }
    
    .checklist-result {
        padding: 2rem 1.5rem;
        margin-left: 0.5rem;
        margin-right: 0.5rem;
    }
    
    .checklist-result i {
        font-size: 2.5rem;
    }
    
    .checklist-result h4 {
        font-size: 1.4rem;
    }
    
    .checklist-result p {
        font-size: 1rem;
    }
    
    .result-excellent, .result-good, .result-improvement {
        padding: 2rem 1.5rem;
    }
}

@media (max-width: 480px) {
    .security-rule-card {
        padding: 1.25rem;
    }
    
    .rule-icon {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }
    
    .security-rule-card h3 {
        font-size: 1rem;
    }
    
    .checklist-section {
        padding: 1.5rem 1rem;
    }
    
    .checklist-section h3 {
        font-size: 1.3rem;
    }
    
    .progress-container {
        padding: 1.25rem;
    }
    
    .checklist-items {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .checklist-item {
        padding: 1rem 1.25rem;
    }
    
    .checkbox-container {
        font-size: 0.9rem;
    }
    
    /* lesson2 스타일 반응형 */
    .rule-header {
        flex-direction: column;
        gap: 1rem;
    }
    
    .rule-badges {
        gap: 0.5rem;
    }
    
    .difficulty-badge, .effectiveness-badge, .risk-badge, .damage-badge, .trend-badge {
        font-size: 0.7rem;
        padding: 0.3rem 0.6rem;
    }
    
    .stat-label {
        min-width: 80px;
        font-size: 0.8rem;
    }
    
    .method-tags {
        gap: 0.4rem;
    }
    
    .method-tag {
        font-size: 0.75rem;
        padding: 0.4rem 0.8rem;
    }
    
    .security-tip {
        padding: 0.8rem 1rem;
        font-size: 0.85rem;
    }
    
    .result-excellent, .result-good, .result-improvement {
        padding: 1.5rem 1rem;
    }
}