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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans KR', 'Malgun Gothic', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
    word-break: keep-all;
    word-wrap: break-word;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-overflow-scrolling: touch;
    -webkit-tap-highlight-color: transparent;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 700;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: #333;
    word-break: keep-all;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}

.nav-container {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: justify;
    -webkit-justify-content: space-between;
    justify-content: space-between;
    -webkit-box-align: center;
    -webkit-align-items: center;
    align-items: center;
    padding: 1rem 20px;
    width: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.logo:hover {
    opacity: 0.8;
}

/* 
.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #667eea;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: all 0.3s ease;
}
*/

.nav-contact-btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    font-weight: 700;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.nav-contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    height: 100vh;
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -webkit-flex-direction: column;
    flex-direction: column;
    -webkit-box-pack: space-between;
    -webkit-justify-content: space-between;
    justify-content: space-between;
    -webkit-box-align: center;
    -webkit-align-items: center;
    align-items: center;
    color: white;
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('attached_assets/cover_1761698767183.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: -2;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.75) 0%, rgba(118, 75, 162, 0.7) 100%);
    z-index: 1;
}

.hero-content {
    text-align: center;
    z-index: 2;
    -webkit-box-flex: 1;
    -webkit-flex: 1;
    flex: 1;
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -webkit-flex-direction: column;
    flex-direction: column;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-box-align: center;
    -webkit-align-items: center;
    align-items: center;
    width: 100%;
    padding: 2rem 1rem;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 0.5rem;
    opacity: 1;
    text-shadow: 1px 1px 8px rgba(0, 0, 0, 0.3);
}

.hero-title {
    font-size: 5rem;
    font-weight: 900;
    margin: 1.5rem 0;
    letter-spacing: -2px;
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
    color: #ffffff;
}

.hero-title sup {
    font-size: 2rem;
    vertical-align: super;
}

.hero-tagline {
    font-size: 1.3rem;
    font-weight: 300;
    opacity: 1;
    text-shadow: 1px 1px 8px rgba(0, 0, 0, 0.3);
}

.scroll-indicator {
    position: absolute;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255,255,255,0.6);
    border-radius: 25px;
    cursor: pointer;
    z-index: 2;
    transition: border-color 0.3s ease;
}

.scroll-indicator:hover {
    border-color: rgba(255,255,255,0.9);
}

.scroll-indicator span {
    position: absolute;
    top: 10px;
    left: 50%;
    width: 6px;
    height: 6px;
    margin-left: -3px;
    background: white;
    border-radius: 50%;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateY(20px);
    }
}

.hero-footer {
    width: 100%;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.15);
    text-align: center;
    font-size: 0.9rem;
    z-index: 2;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    -webkit-flex-shrink: 0;
    flex-shrink: 0;
}

/* Section Common Styles */
.section {
    padding: 6rem 0;
}

/* Problem Section */
.problem-section {
    background: #f8f9fa;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.problem-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.problem-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.problem-icon img {
    width: 96px;
    height: 96px;
    object-fit: contain;
}

.problem-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #667eea;
}

.problem-card p {
    color: #666;
    line-height: 1.8;
    word-break: keep-all;
}

.problem-question {
    text-align: center;
    font-size: 1.8rem;
    font-weight: 700;
    color: #764ba2;
    word-break: keep-all;
}

/* Solution Section */
.solution-section {
    background: white;
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.solution-card {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    padding: 2.5rem;
    border-radius: 15px;
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
    text-align: center;
}

.solution-card:hover {
    border-color: #667eea;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.1);
}

.solution-icon {
    text-align: center;
    margin-bottom: 1.5rem;
}

.solution-icon img {
    width: 84px;
    height: 84px;
    object-fit: contain;
}

.comparison {
    margin-bottom: 1.5rem;
    text-align: center;
}

.old, .new, .arrow {
    display: inline-block;
    margin: 0.3rem;
    font-weight: 600;
}

.old {
    color: #666;
}

.new {
    color: #667eea;
}

.arrow {
    color: #00bcd4;
    font-size: 1.2rem;
}

.x {
    color: #e74c3c;
    font-size: 1.3rem;
}

.check {
    color: #27ae60;
    font-size: 1.3rem;
}

.description {
    color: #666;
    line-height: 1.8;
    text-align: center;
    word-break: keep-all;
}

.solution-bottom {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 3rem;
    word-break: keep-all;
}

.company-logos {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 0;
}

.logo-item {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    align-items: center;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    padding: 1.5rem;
    font-size: 1.3rem;
    font-weight: 700;
    color: #999;
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    -webkit-transition: all 0.3s ease;
    transition: all 0.3s ease;
    -webkit-filter: grayscale(100%);
    filter: grayscale(100%);
    opacity: 0.6;
}

.logo-item:hover {
    opacity: 1;
    -webkit-filter: grayscale(0%);
    filter: grayscale(0%);
    color: #667eea;
}

/* Credibility Section */
.credibility-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.credibility-section .section-title {
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

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

.stat-number {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 1rem;
}

.stat-number::after {
    content: '+';
    font-size: 3rem;
}

.stat-label {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.stat-description {
    font-size: 1rem;
    opacity: 0.9;
    line-height: 1.6;
}

/* Lecture Section */
.lecture-section {
    background: #f8f9fa;
}

.lecture-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.lecture-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.lecture-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.lecture-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: #667eea;
}

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

.lecture-card li {
    margin-bottom: 1rem;
    color: #666;
    line-height: 1.8;
}

.lecture-card strong {
    color: #333;
}

.lecture-note {
    text-align: center;
    color: #666;
    font-style: italic;
    margin-top: 2rem;
}

/* Instructor Intro Image */
.instructor-intro-image {
    width: 100%;
    overflow: hidden;
    background: #f8f9fa;
}

.instructor-intro-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

/* Instructor Section */
.instructor-section {
    background: white;
}

.instructor-stats {
    display: -ms-grid;
    display: grid;
    -ms-grid-columns: 1fr 2rem 1fr 2rem 1fr 2rem 1fr;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

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

.stat-value {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
}

.stat-text {
    font-size: 1rem;
    opacity: 0.95;
}

.credentials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.credential-card {
    background: #f8f9fa;
    padding: 2.5rem;
    border-radius: 15px;
}

.credential-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.credential-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: #333;
}

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

.credential-card li {
    margin-bottom: 1rem;
    color: #666;
    padding-left: 1.5rem;
    position: relative;
}

.credential-card li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

.instructor-quote {
    text-align: center;
    font-size: 1.5rem;
    font-style: italic;
    color: #667eea;
    padding: 2rem;
    border-left: 4px solid #667eea;
    background: #f8f9fa;
    border-radius: 10px;
}

/* Testimonials Section */
.testimonials-section {
    background: #f8f9fa;
}

/* FAQ Section */
.faq-section {
    background: white;
}

.faq-tabs {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    -webkit-flex-wrap: wrap;
    flex-wrap: wrap;
}

.faq-tab {
    padding: 1rem 2rem;
    background: #f8f9fa;
    color: #666;
    border: 2px solid #e9ecef;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.faq-tab:hover {
    background: #e9ecef;
    color: #333;
}

.faq-tab.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: transparent;
}

.faq-content {
    max-width: 900px;
    margin: 0 auto;
}

.faq-category {
    display: none !important;
}

.faq-category.active {
    display: block !important;
}

.faq-item {
    margin-bottom: 1rem;
    background: white;
    border: 2px solid #e9ecef;
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: #667eea;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.1);
}

.faq-question {
    width: 100%;
    padding: 1.5rem 2rem;
    background: white;
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    cursor: pointer;
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: justify;
    -webkit-justify-content: space-between;
    justify-content: space-between;
    -webkit-box-align: center;
    -webkit-align-items: center;
    align-items: center;
    transition: all 0.3s ease;
}

.faq-question:hover {
    color: #667eea;
}

.faq-icon {
    font-size: 1.5rem;
    font-weight: 300;
    color: #667eea;
    transition: transform 0.3s ease;
    -webkit-flex-shrink: 0;
    flex-shrink: 0;
    margin-left: 1rem;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 2rem;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 2rem 1.5rem 2rem;
}

.faq-answer p {
    color: #666;
    line-height: 1.8;
    margin: 0;
    word-break: keep-all;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.testimonial-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    position: relative;
}

.quote-mark {
    font-size: 4rem;
    color: #667eea;
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 1rem;
}

.testimonial-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #333;
    margin-bottom: 1.5rem;
}

.testimonial-author {
    font-weight: 700;
    color: #667eea;
    text-align: right;
}

.testimonials-stats {
    text-align: center;
    color: #666;
    font-style: italic;
}

/* CTA Section */
.cta-section {
    position: relative;
    min-height: 400px;
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    align-items: center;
    color: white;
    overflow: hidden;
    padding: 4rem 0;
}

.cta-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    z-index: -1;
}

.cta-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        repeating-linear-gradient(45deg, transparent, transparent 50px, rgba(255,255,255,0.03) 50px, rgba(255,255,255,0.03) 51px);
    z-index: -1;
}

.cta-content {
    text-align: center;
    z-index: 1;
}

.cta-title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.cta-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

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

.cta-buttons {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    gap: 1.5rem;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-flex-wrap: wrap;
    flex-wrap: wrap;
}

.cta-button {
    display: inline-block;
    padding: 1.2rem 3rem;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.2rem;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    white-space: nowrap;
}

.cta-button-primary {
    background: white;
    color: #667eea;
}

.cta-button-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.3);
}

.cta-button-secondary:hover {
    background: white;
    color: #667eea;
}

/* Contact Section */
.contact-section {
    background: white;
}

.contact-form {
    max-width: 800px;
    margin: 0 auto;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -webkit-flex-direction: column;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #333;
}

.required {
    color: #e74c3c;
}

.form-group input,
.form-group textarea {
    padding: 1rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

.form-group textarea {
    resize: vertical;
}

.error-message {
    display: none;
    color: #e74c3c;
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

.form-group.error input,
.form-group.error textarea {
    border-color: #e74c3c;
}

.form-group.error .error-message {
    display: block;
}

.privacy-notice {
    text-align: center;
    color: #666;
    font-size: 0.9rem;
    margin: 1.5rem 0;
}

.submit-button {
    width: 100%;
    padding: 1.2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.success-message {
    display: none;
    text-align: center;
    padding: 3rem;
    background: #f8f9fa;
    border-radius: 15px;
    margin-top: 2rem;
}

.success-message.show {
    display: block;
}

.success-icon {
    width: 80px;
    height: 80px;
    background: #27ae60;
    color: white;
    font-size: 3rem;
    border-radius: 50%;
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    align-items: center;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.success-message h3 {
    color: #333;
    margin-bottom: 1rem;
}

.success-message p {
    color: #666;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
}

/* Scroll to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    align-items: center;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
    opacity: 0;
    visibility: hidden;
    -webkit-transform: translateY(20px);
    transform: translateY(20px);
    -webkit-transition: all 0.3s ease;
    transition: all 0.3s ease;
    z-index: 999;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
}

.scroll-to-top svg {
    width: 24px;
    height: 24px;
}

/* Form Loading Animation */
.submit-button.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.submit-button.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spinner 0.6s linear infinite;
}

@keyframes spinner {
    to { transform: rotate(360deg); }
}

/* Animations */
.fade-in {
    opacity: 0;
    -webkit-transform: translateY(30px);
    transform: translateY(30px);
    -webkit-transition: opacity 0.6s ease, -webkit-transform 0.6s ease;
    transition: opacity 0.6s ease, -webkit-transform 0.6s ease;
    transition: opacity 0.6s ease, transform 0.6s ease;
    transition: opacity 0.6s ease, transform 0.6s ease, -webkit-transform 0.6s ease;
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    .section-title {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 4rem;
    }

    .stats-grid,
    .lecture-grid,
    .credentials-grid,
    .testimonials-grid {
        -ms-grid-columns: 1fr 2rem 1fr;
        grid-template-columns: repeat(2, 1fr);
    }

    .instructor-stats {
        -ms-grid-columns: 1fr 2rem 1fr;
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .faq-tabs {
        gap: 0.5rem;
        padding: 0 1rem;
    }

    .faq-tab {
        padding: 0.8rem 1.2rem;
        font-size: 0.85rem;
        white-space: nowrap;
    }

    .faq-question {
        padding: 1rem 1rem;
        font-size: 0.95rem;
        line-height: 1.5;
    }

    .faq-question span:first-child {
        padding-right: 0.5rem;
        word-break: keep-all;
    }

    .faq-icon {
        font-size: 1.3rem;
        margin-left: 0.5rem;
    }

    .faq-answer {
        padding: 0 1rem;
    }

    .faq-item.active .faq-answer {
        padding: 0 1rem 1rem 1rem;
    }

    .faq-answer p {
        font-size: 0.9rem;
    }

    /* 
    .menu-toggle {
        display: -webkit-box;
        display: -webkit-flex;
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        height: -webkit-calc(100vh - 70px);
        background: white;
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -webkit-flex-direction: column;
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
        -webkit-transition: right 0.3s ease;
        transition: right 0.3s ease;
        box-shadow: -5px 0 20px rgba(0,0,0,0.1);
    }

    .nav-menu.active {
        right: 0;
    }
    */

    .nav-contact-btn {
        padding: 0.6rem 1.5rem;
        font-size: 0.9rem;
    }

    .hero {
        height: auto;
        min-height: 100vh;
        padding-top: 70px;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-tagline {
        font-size: 1rem;
    }
    
    .hero-footer {
        position: relative;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .problem-grid,
    .solution-grid,
    .stats-grid,
    .lecture-grid,
    .instructor-stats,
    .credentials-grid,
    .testimonials-grid {
        -ms-grid-columns: 1fr;
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .cta-section {
        min-height: 100vh;
        min-height: -webkit-fill-available;
        padding: 4rem 0;
    }

    .cta-title {
        font-size: 1.8rem;
        margin-bottom: 1.5rem;
        line-height: 1.4;
    }

    .cta-subtitle {
        font-size: 1.1rem;
        margin-bottom: 2rem;
        line-height: 1.6;
    }

    .cta-contact {
        margin-bottom: 2.5rem;
        font-size: 1rem;
        line-height: 1.8;
    }

    .cta-buttons {
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -webkit-flex-direction: column;
        flex-direction: column;
        gap: 1rem;
        padding: 0 1rem;
    }

    .cta-button {
        width: 100%;
        padding: 1rem 2rem;
        font-size: 1.1rem;
        text-align: center;
    }

    .stat-number {
        font-size: 3rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .section {
        padding: 4rem 0;
    }

    .section-title {
        font-size: 1.5rem;
        margin-bottom: 2rem;
    }

    .problem-card,
    .solution-card,
    .lecture-card {
        padding: 1.5rem;
    }

    .problem-icon img {
        width: 60px;
        height: 60px;
    }

    .solution-icon {
        text-align: center;
    }

    .solution-icon img {
        width: 50px;
        height: 50px;
    }

    .company-logos {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .logo-item {
        padding: 1rem;
        font-size: 1rem;
    }
}