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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', sans-serif;
    background: #FBFBFD;
    color: #1d1d1f;
    line-height: 1.47059;
    font-size: 17px;
    font-weight: 400;
    letter-spacing: -0.022em;
    overflow-x: hidden;
}

.blob-1 {
    position: fixed;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(121, 40, 202, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: float 20s ease-in-out infinite;
    pointer-events: none;
    z-index: -1;
}

.blob-2 {
    position: fixed;
    bottom: -20%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 113, 227, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: float 25s ease-in-out infinite reverse;
    pointer-events: none;
    z-index: -1;
}

.blob-3 {
    position: fixed;
    top: 50%;
    left: 50%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 0, 128, 0.05) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 30s ease-in-out infinite;
    pointer-events: none;
    z-index: -1;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

header {
    background: rgba(251, 251, 253, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 21px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    color: #1d1d1f;
}

.logo-emoji {
    font-size: 24px;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

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

.nav-link {
    color: #1d1d1f;
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    opacity: 0.8;
    transition: all 0.3s;
    padding: 8px 16px;
    border-radius: 980px;
}

.nav-link:hover {
    opacity: 1;
    background: rgba(121, 40, 202, 0.08);
}

.hero {
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

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

/* Aurora Background - Aceternity Style */
.aurora-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    background-color: #FBFBFD;
}

/* Create mesh gradient effect with multiple blurred spots */
.aurora-gradient {
    position: absolute;
    width: 50vw;
    height: 50vw;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
}

/* Purple-blue spot in upper area */
.aurora-gradient:nth-child(1) {
    background: radial-gradient(circle at center, 
        rgba(120, 119, 198, 1) 0%, 
        rgba(120, 119, 198, 0.5) 40%, 
        transparent 70%);
    top: -20%;
    left: 10%;
    animation: aurora-drift 25s ease-in-out infinite;
}

/* Blue spot in middle-right */
.aurora-gradient:nth-child(2) {
    background: radial-gradient(circle at center, 
        rgba(99, 102, 241, 1) 0%, 
        rgba(99, 102, 241, 0.5) 40%, 
        transparent 70%);
    top: 10%;
    right: -10%;
    width: 45vw;
    height: 45vw;
    animation: aurora-drift 30s ease-in-out infinite reverse;
    animation-delay: -10s;
}

/* Light purple spot in lower area */
.aurora-gradient:nth-child(3) {
    background: radial-gradient(circle at center, 
        rgba(167, 139, 250, 0.8) 0%, 
        rgba(167, 139, 250, 0.4) 40%, 
        transparent 70%);
    bottom: -20%;
    left: 20%;
    width: 55vw;
    height: 55vw;
    animation: aurora-drift 35s ease-in-out infinite;
    animation-delay: -5s;
}

/* Additional layer for depth */
.aurora-background::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 50%, 
        rgba(139, 92, 246, 0.1) 0%, 
        transparent 50%),
        radial-gradient(circle at 70% 50%, 
        rgba(59, 130, 246, 0.1) 0%, 
        transparent 50%);
    filter: blur(80px);
}

/* Very subtle overlay to soften the effect */
.aurora-background::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(251, 251, 253, 0.5);
    mix-blend-mode: overlay;
}

@keyframes aurora-drift {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -30px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

h1 {
    font-size: 64px;
    font-weight: 600;
    line-height: 1.07143;
    letter-spacing: -0.005em;
    margin-bottom: 24px;
    color: #1d1d1f;
}

.highlight {
    background: linear-gradient(90deg, #0071e3 0%, #7928ca 50%, #ff0080 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 21px;
    line-height: 1.381;
    font-weight: 400;
    letter-spacing: 0.011em;
    color: #86868b;
    max-width: 600px;
    margin: 0 auto 48px;
}

.cta-group {
    display: flex;
    gap: 16px;
    justify-content: center;
    align-items: center;
}

.btn-pill {
    padding: 16px 32px;
    border-radius: 980px;
    text-decoration: none;
    font-weight: 400;
    font-size: 17px;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, #7928ca 0%, #0071e3 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(121, 40, 202, 0.3);
}

.btn-secondary {
    background: #f5f5f7;
    color: #1d1d1f;
    border: 1px solid rgba(121, 40, 202, 0.2);
}

.btn-secondary:hover {
    background: rgba(121, 40, 202, 0.05);
    border-color: rgba(121, 40, 202, 0.3);
}

.stats-container {
    margin: 80px 0;
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.stat-pill {
    background: white;
    padding: 12px 24px;
    border-radius: 980px;
    box-shadow: 0 2px 8px rgba(121, 40, 202, 0.08);
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    font-size: 15px;
    animation: fadeInUp 0.6s ease-out;
    animation-fill-mode: both;
    color: #1d1d1f;
    border: 1px solid rgba(121, 40, 202, 0.1);
    position: relative;
    transition: all 0.3s ease;
}

.flashcard-stat {
    cursor: pointer;
    overflow: hidden;
}

.flashcard-stat:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 6px 16px rgba(121, 40, 202, 0.15);
    border-color: #7928ca;
}

.flashcard-stat.revealed {
    background: linear-gradient(135deg, rgba(121, 40, 202, 0.05) 0%, rgba(0, 113, 227, 0.05) 100%);
}

.flashcard-stat .stat-text {
    transition: all 0.5s ease;
}

.flashcard-stat.revealed .stat-text {
    font-weight: 700;
    color: #7928ca;
}

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

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

.section {
    padding: 100px 0;
}

.section-title {
    font-size: 48px;
    font-weight: 600;
    line-height: 1.08349;
    letter-spacing: -0.003em;
    text-align: center;
    margin-bottom: 60px;
    color: #1d1d1f;
}

.chapter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.chapter-card {
    background: white;
    border-radius: 24px;
    padding: 32px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    transition: all 0.3s;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(121, 40, 202, 0.08);
}

.chapter-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(to right, #7928ca, #0071e3);
    transform: scaleX(0);
    transition: transform 0.3s;
}

.chapter-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(121, 40, 202, 0.15);
    border-color: rgba(121, 40, 202, 0.2);
}

.chapter-card:hover::before {
    transform: scaleX(1);
}

.chapter-emoji {
    font-size: 48px;
    margin-bottom: 16px;
}

.chapter-title {
    font-size: 21px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #1d1d1f;
}

.chapter-meta {
    color: #86868b;
    font-size: 14px;
    line-height: 1.42859;
}

.sticker {
    position: absolute;
    background: #7928ca;
    color: white;
    padding: 4px 12px;
    border-radius: 980px;
    font-size: 12px;
    font-weight: 500;
    transform: rotate(-5deg);
}

.lesson-count {
    position: absolute;
    top: 16px;
    right: 16px;
    color: #86868b;
    font-size: 14px;
    font-weight: 400;
}

.pricing-toggle {
    display: flex;
    justify-content: center;
    margin-bottom: 60px;
}

.toggle-pill {
    background: #f5f5f7;
    border-radius: 980px;
    padding: 4px;
    display: flex;
}

.toggle-option {
    padding: 12px 24px;
    border-radius: 980px;
    cursor: pointer;
    font-weight: 400;
    font-size: 15px;
    transition: all 0.3s;
    color: #1d1d1f;
}

.toggle-option.active {
    background: white;
    box-shadow: 0 2px 8px rgba(121, 40, 202, 0.15);
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    max-width: 800px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    border-radius: 24px;
    padding: 48px;
    text-align: center;
    transition: all 0.3s;
    position: relative;
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.pricing-card.featured {
    background: linear-gradient(135deg, rgba(121, 40, 202, 0.03) 0%, rgba(0, 113, 227, 0.03) 100%);
    border-color: #7928ca;
    transform: scale(1.05);
    box-shadow: 0 12px 24px rgba(121, 40, 202, 0.15);
}

.price-emoji {
    font-size: 48px;
    margin-bottom: 16px;
}

.price-tag {
    font-size: 48px;
    font-weight: 600;
    margin: 16px 0;
    color: #1d1d1f;
}

.instructor {
    background: white;
    border-radius: 24px;
    padding: 60px;
    display: flex;
    gap: 48px;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(121, 40, 202, 0.08);
}

.instructor-avatar {
    width: 180px;
    height: 180px;
    background: linear-gradient(135deg, #7928ca 0%, #0071e3 100%);
    border-radius: 50%;
    flex-shrink: 0;
    overflow: hidden;
    position: relative;
}

.instructor-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.badge-container {
    display: flex;
    gap: 8px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.badge {
    background: rgba(121, 40, 202, 0.08);
    padding: 4px 12px;
    border-radius: 980px;
    font-size: 12px;
    font-weight: 500;
    color: #1d1d1f;
}

.testimonial-card {
    background: linear-gradient(135deg, rgba(121, 40, 202, 0.05) 0%, rgba(255, 0, 128, 0.05) 100%);
    border-radius: 24px;
    padding: 32px;
    margin: 16px 0;
    font-style: italic;
    position: relative;
    color: #1d1d1f;
    border: 1px solid rgba(121, 40, 202, 0.1);
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: 20px;
    font-size: 80px;
    opacity: 0.1;
    font-family: Georgia, serif;
    color: #7928ca;
}

.price-description {
    color: #86868b;
    margin-bottom: 32px;
}

.eyebrow {
    font-size: 17px;
    color: #86868b;
    margin-bottom: 12px;
}

.footer-badges {
    text-align: center;
    margin-top: 32px;
    color: #86868b;
    font-size: 14px;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 48px;
    max-width: 1000px;
    margin: 0 auto;
    perspective: 1000px;
}

/* Flashcard Flip Container */
.flashcard-container {
    position: relative;
    width: 100%;
    height: 600px;
    perspective: 1200px;
}

.flashcard {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transition: transform 0.8s cubic-bezier(0.23, 1, 0.32, 1);
    cursor: pointer;
    z-index: 1;
}

.flashcard.flipped {
    transform: rotateY(180deg);
}

.flashcard-front, .flashcard-back {
    position: absolute;
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 24px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(121, 40, 202, 0.08);
    backface-visibility: hidden;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    pointer-events: auto;
    overflow: hidden;
    padding-top: 60px;
}

.flashcard-back {
    transform: rotateY(180deg);
}

.problem-card .flashcard-front {
    background: linear-gradient(135deg, #fff 0%, rgba(255, 0, 128, 0.02) 100%);
}

.problem-card .flashcard-back {
    background: linear-gradient(135deg, rgba(255, 0, 128, 0.05) 0%, #fff 100%);
}

.solution-card .flashcard-front {
    background: linear-gradient(135deg, #fff 0%, rgba(0, 113, 227, 0.02) 100%);
}

.solution-card .flashcard-back {
    background: linear-gradient(135deg, rgba(0, 113, 227, 0.05) 0%, #fff 100%);
}

/* Flip hint */
.flip-hint {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background: rgba(121, 40, 202, 0.1);
    color: #7928ca;
    padding: 8px 16px;
    border-radius: 980px;
    font-size: 12px;
    font-weight: 500;
    animation: pulse 2s infinite;
    z-index: 10;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.05); opacity: 1; }
}

/* Legacy card styles for hover effects */
.problem-card, .solution-card {
    position: relative;
    overflow: visible;
}

.problem-card .flashcard-container:hover {
    transform: translateY(-4px);
}

.solution-card .flashcard-container:hover {
    transform: translateY(-4px);
}

.problem-emoji, .solution-emoji {
    font-size: 64px;
    margin-bottom: 24px;
    display: inline-block;
    animation: float 3s ease-in-out infinite;
}

.solution-emoji {
    animation-delay: 1.5s;
}

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

.problem-title, .solution-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
    margin-top: 0;
    color: #1d1d1f;
    position: relative;
    z-index: 1;
    display: block;
    width: 100%;
}


.curve-container {
    position: relative;
    width: 100%;
    height: 250px;
    margin-top: 32px;
    overflow: hidden;
    border-radius: 16px;
    background: linear-gradient(135deg, #f5f5f7 0%, #ffffff 100%);
}

.curve-svg {
    width: 100%;
    height: 100%;
    position: relative;
    z-index: 2;
}

.curve-label {
    font-size: 14px;
    fill: #86868b;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Animated percentage counters */
.percentage-display {
    position: absolute;
    font-size: 48px;
    font-weight: 700;
    opacity: 0;
    animation: fadeInScale 0.8s ease-out forwards;
}

.problem-card .percentage-display {
    color: #ff0080;
    bottom: 60px;
    right: 40px;
    animation-delay: 0.5s;
}

.solution-card .percentage-display {
    color: #0071e3;
    bottom: 60px;
    right: 40px;
    animation-delay: 0.8s;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.5);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Animated curve drawing */
.curve-path {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
}

.problem-path {
    animation: drawProblemPath 2s ease-out forwards;
}

.solution-path {
    animation: drawSolutionPath 2s ease-out forwards;
    animation-delay: 0.5s;
}

@keyframes drawProblemPath {
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes drawSolutionPath {
    to {
        stroke-dashoffset: 0;
    }
}

/* Fade in percentage labels */
.percentage-label {
    opacity: 0;
    animation: fadeIn 0.5s ease-out forwards;
}

.problem-card .percentage-label:first-of-type {
    animation-delay: 0.5s;
}

.problem-card .percentage-label:last-of-type {
    animation-delay: 1.5s;
}

.solution-card .percentage-label:first-of-type {
    animation-delay: 1s;
}

.solution-card .percentage-label:last-of-type {
    animation-delay: 2s;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

/* Particle effects */
.particle-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    opacity: 0;
    animation: particle 3s ease-out infinite;
}

.problem-card .particle {
    background: #ff0080;
}

.solution-card .particle {
    background: #0071e3;
}

@keyframes particle {
    0% {
        opacity: 0;
        transform: translate(0, 0) scale(0);
    }
    20% {
        opacity: 1;
        transform: translate(0, 0) scale(1);
    }
    100% {
        opacity: 0;
        transform: translate(var(--x), var(--y)) scale(0);
    }
}


.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, #7928ca, #0071e3);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    padding: 40px 0;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 16px;
    height: 16px;
    background: #7928ca;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 0 4px rgba(121, 40, 202, 0.2);
}

.timeline-content {
    background: white;
    padding: 24px 32px;
    border-radius: 24px;
    width: 45%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(121, 40, 202, 0.08);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: auto;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-right: auto;
}

.timeline-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #1d1d1f;
}

.timeline-content p {
    color: #86868b;
    font-size: 14px;
}

.review-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.reviews-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding: 20px 0;
}

.reviews-container {
    display: flex;
    gap: 20px;
    padding-bottom: 20px;
}

.review-card {
    flex: 0 0 350px;
    background: white;
    border-radius: 24px;
    padding: 32px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(121, 40, 202, 0.08);
}

/* Module preview cards */
.module-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto 60px;
}

.module-preview-card {
    background: #f5f5f7;
    border-radius: 24px;
    padding: 40px 32px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.module-preview-card:hover {
    background: white;
    border-color: rgba(121, 40, 202, 0.1);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    transform: translateY(-4px);
}

.preview-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: inline-block;
    animation: float 3s ease-in-out infinite;
}

.module-preview-card:nth-child(2) .preview-icon {
    animation-delay: 0.5s;
}

.module-preview-card:nth-child(3) .preview-icon {
    animation-delay: 1s;
}

.module-preview-card:nth-child(4) .preview-icon {
    animation-delay: 1.5s;
}

.module-preview-card h3 {
    font-size: 21px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #1d1d1f;
}

.module-preview-card p {
    font-size: 15px;
    line-height: 1.5;
    color: #86868b;
    margin: 0;
}

/* Apple-style course outline */
.course-modules {
    max-width: 900px;
    margin: 0 auto;
}

.module-card {
    background: white;
    border-radius: 24px;
    margin-bottom: 24px;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: all 0.3s ease;
}

.module-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.module-header {
    padding: 32px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    transition: all 0.3s ease;
    user-select: none;
}

.module-header:hover {
    background: #f5f5f7;
}

.module-info {
    display: flex;
    align-items: center;
    gap: 24px;
}

.module-number {
    background: linear-gradient(135deg, #7928ca 0%, #0071e3 100%);
    color: white;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 18px;
}

.module-content h3 {
    font-size: 21px;
    font-weight: 600;
    margin-bottom: 4px;
    color: #1d1d1f;
}

.module-meta {
    color: #86868b;
    font-size: 14px;
}

.expand-indicator {
    color: #86868b;
    font-size: 24px;
    transition: transform 0.3s ease;
}

.module-card.expanded .expand-indicator {
    transform: rotate(180deg);
}

.module-lessons {
    background: #f5f5f7;
    max-height: 0;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.module-card.expanded .module-lessons {
    max-height: 2000px;
}

.lessons-grid {
    padding: 32px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.lesson-item {
    background: white;
    padding: 16px 20px;
    border-radius: 12px;
    font-size: 14px;
    color: #1d1d1f;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s ease;
}

.lesson-item:hover {
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transform: translateY(-1px);
}

.lesson-number {
    color: #86868b;
    font-size: 12px;
    font-weight: 500;
}

.review-author {
    margin-top: 16px;
    font-style: normal;
    font-weight: 500;
    font-size: 14px;
    color: #86868b;
}

.feature-list {
    list-style: none;
    text-align: left;
    margin: 32px 0;
    line-height: 2;
}

.feature-list li {
    color: #1d1d1f;
    padding-left: 24px;
    position: relative;
}

.chapter-expand-icon {
    position: absolute;
    right: 32px;
    top: 32px;
    font-size: 24px;
    color: #86868b;
    transition: transform 0.3s;
}

.chapter-card.expanded .chapter-expand-icon {
    transform: rotate(45deg);
}

.chapter-lessons {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.lesson-list {
    list-style: none;
    line-height: 2;
    color: #86868b;
    font-size: 14px;
}

.coupon-section {
    margin-top: 48px;
}

.coupon-input-group {
    display: flex;
    gap: 16px;
    max-width: 400px;
    margin: 0 auto;
}

.coupon-input {
    flex: 1;
    padding: 16px 24px;
    border-radius: 980px;
    border: 1px solid rgba(121, 40, 202, 0.2);
    font-size: 16px;
    font-family: inherit;
    background: white;
    transition: all 0.3s;
}

.coupon-input:focus {
    outline: none;
    border-color: #7928ca;
    box-shadow: 0 0 0 3px rgba(121, 40, 202, 0.1);
}

.coupon-message {
    text-align: center;
    margin-top: 16px;
    font-size: 14px;
    transition: all 0.3s;
}

.coupon-message.success {
    color: #0071e3;
}

.coupon-message.error {
    color: #ff0080;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 24px;
    margin-bottom: 16px;
    border: 1px solid rgba(121, 40, 202, 0.08);
    overflow: hidden;
    transition: all 0.3s;
}

.faq-question {
    padding: 24px 32px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s;
}

.faq-question:hover {
    background: rgba(121, 40, 202, 0.02);
}

.faq-question h3 {
    font-size: 18px;
    font-weight: 600;
    color: #1d1d1f;
}

.faq-icon {
    font-size: 24px;
    color: #86868b;
    transition: transform 0.3s;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 0 32px 24px;
    color: #86868b;
    line-height: 1.6;
}

.final-cta {
    background: linear-gradient(135deg, rgba(121, 40, 202, 0.03) 0%, rgba(0, 113, 227, 0.03) 100%);
    text-align: center;
}

@media (max-width: 768px) {
    h1 { font-size: 40px; }
    .section-title { font-size: 32px; }
    .nav-links { display: none; }
    .cta-group { flex-direction: column; width: 100%; }
    .btn-pill { width: 100%; justify-content: center; }
    .instructor { 
        flex-direction: column; 
        text-align: center;
        padding: 40px 24px;
    }
    .instructor-avatar {
        width: 120px;
        height: 120px;
        font-size: 48px;
    }
    .timeline::before { left: 24px; }
    .timeline-dot { left: 24px; }
    .timeline-content { 
        width: calc(100% - 60px); 
        margin-left: 60px !important;
    }
    .problem-grid { gap: 24px; }
    .pricing-cards { gap: 24px; }
    .pricing-card.featured { transform: none; }
    .coupon-input-group { 
        flex-direction: column; 
        width: 100%; 
    }
    .chapter-expand-icon {
        top: 16px;
        right: 16px;
    }
}