:root {
    --primary-blue: #1e3a8a;
    --primary-blue-light: #3b82f6;
    --primary-orange: #f97316;
    --primary-orange-light: #fb923c;
    --accent-purple: #8b5cf6;
    --accent-teal: #14b8a6;
    --gradient-hero: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #8b5cf6 100%);
    --gradient-cta: linear-gradient(135deg, #f97316 0%, #fb923c 100%);
    --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.3);
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    --max-width: 1200px;
    --navbar-height: 70px
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden
}

img {
    max-width: 100%;
    height: auto;
    display: block
}

a {
    text-decoration: none;
    color: inherit
}

ul {
    list-style: none
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg)
}

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--gray-900);
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    line-height: 1.2
}

.section-title.align-left {
    text-align: left
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background: rgba(255, 255, 255, .95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition-base);
    border-bottom: 1px solid transparent
}

.navbar.scrolled {
    background: rgba(255, 255, 255, .98);
    border-bottom-color: var(--gray-200);
    box-shadow: var(--shadow-md)
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--primary-blue);
    transition: var(--transition-fast)
}

.logo:hover {
    color: var(--primary-blue-light)
}

.logo-main {
    font-weight: 800
}

.logo-divider {
    color: var(--gray-300);
    font-weight: 400
}

.logo-sub {
    font-weight: 500;
    color: var(--gray-500);
    font-size: var(--font-size-sm)
}

.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 28px;
    height: 28px;
    background: 0 0;
    border: none;
    cursor: pointer;
    z-index: 1001
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: var(--transition-base)
}

.mobile-menu-btn.active span:first-child {
    transform: rotate(45deg) translate(5px, 5px)
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px)
}

.nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: var(--white);
    padding: calc(var(--navbar-height) + var(--spacing-xl)) var(--spacing-xl) var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-xl);
    transition: var(--transition-base)
}

.nav-menu.active {
    right: 0
}

.nav-link {
    display: block;
    padding: var(--spacing-md) 0;
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-100);
    transition: var(--transition-fast)
}

.nav-link:hover {
    color: var(--primary-blue)
}

.btn-access {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--gradient-cta);
    color: var(--white);
    font-weight: 600;
    font-size: var(--font-size-sm);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    margin-top: var(--spacing-md)
}

.btn-access:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg)
}

.hero {
    position: relative;
    min-height: 100vh;
    padding: calc(var(--navbar-height) + var(--spacing-2xl)) 0 var(--spacing-2xl);
    background: var(--gradient-hero);
    overflow: hidden;
    display: flex;
    align-items: center
}

.hero-bg-pattern {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 20% 80%, rgba(139, 92, 246, .3) 0, transparent 50%), radial-gradient(circle at 80% 20%, rgba(249, 115, 22, .2) 0, transparent 50%);
    opacity: .8
}

.hero-bg-pattern::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(60deg, transparent 40%, rgba(255, 255, 255, .03) 40%, rgba(255, 255, 255, .03) 60%, transparent 60%), linear-gradient(-60deg, transparent 40%, rgba(255, 255, 255, .03) 40%, rgba(255, 255, 255, .03) 60%, transparent 60%);
    background-size: 60px 100px
}

.hero-container {
    position: relative;
    z-index: 1;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl)
}

.hero-content {
    text-align: center
}

.hero-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp .8s ease-out
}

.hero-title .highlight {
    display: inline;
    background: linear-gradient(135deg, var(--primary-orange) 0, var(--primary-orange-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, .9);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp .8s ease-out .1s both
}

.cta-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    animation: fadeInUp .8s ease-out .2s both
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) var(--spacing-2xl);
    background: var(--gradient-cta);
    color: var(--white);
    font-size: var(--font-size-lg);
    font-weight: 700;
    border-radius: var(--radius-full);
    box-shadow: 0 8px 30px rgba(249, 115, 22, .4);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .3), transparent);
    transition: var(--transition-slow)
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 40px rgba(249, 115, 22, .5)
}

.btn-primary:hover::before {
    left: 100%
}

.btn-icon {
    width: 24px;
    height: 24px
}

.store-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    width: 100%;
    max-width: 280px
}

.btn-store {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(255, 255, 255, .15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, .2);
    border-radius: var(--radius-lg);
    color: var(--white);
    transition: var(--transition-base)
}

.btn-store:hover {
    background: rgba(255, 255, 255, .25);
    transform: translateY(-2px)
}

.store-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0
}

.store-text {
    display: flex;
    flex-direction: column;
    text-align: left;
    line-height: 1.2
}

.store-text small {
    font-size: var(--font-size-xs);
    opacity: .8
}

.store-text {
    font-weight: 600
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 300px
}

.characters-container {
    position: relative;
    width: 100%;
    max-width: 450px;
    min-height: 250px;
    display: flex;
    justify-content: space-around;
    align-items: flex-end;
    gap: var(--spacing-md)
}

.character {
    animation: float 3s ease-in-out infinite;
    flex-shrink: 0
}

.character-1 {
    z-index: 3;
    animation-delay: 0s;
    order: 2
}

.character-2 {
    z-index: 2;
    animation-delay: .5s;
    order: 1
}

.character-3 {
    z-index: 2;
    animation-delay: 1s;
    order: 3
}

.character-placeholder {
    width: 120px;
    height: 180px;
    background: linear-gradient(145deg, rgba(255, 255, 255, .2), rgba(255, 255, 255, .1));
    backdrop-filter: blur(10px);
    border: 2px dashed rgba(255, 255, 255, .4);
    border-radius: var(--radius-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: rgba(255, 255, 255, .8);
    padding: var(--spacing-md)
}

.character-placeholder span {
    font-weight: 600;
    font-size: var(--font-size-sm)
}

.character-placeholder small {
    font-size: var(--font-size-xs);
    opacity: .7;
    margin-top: var(--spacing-xs)
}

.math-symbols {
    position: absolute;
    inset: 0;
    pointer-events: none
}

.symbol {
    position: absolute;
    font-size: var(--font-size-2xl);
    color: rgba(255, 255, 255, .2);
    font-weight: 700;
    animation: floatSymbol 6s ease-in-out infinite
}

.symbol-1 {
    top: 10%;
    left: 5%;
    animation-delay: 0s
}

.symbol-2 {
    top: 20%;
    right: 10%;
    animation-delay: 1s
}

.symbol-3 {
    bottom: 30%;
    left: 15%;
    animation-delay: 2s
}

.symbol-4 {
    top: 50%;
    right: 5%;
    animation-delay: 3s
}

.symbol-5 {
    bottom: 10%;
    right: 20%;
    animation-delay: 4s
}

.features {
    padding: var(--spacing-4xl) 0;
    background: var(--gray-50)
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl)
}

.feature-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition-base);
    opacity: 0;
    transform: translateY(30px)
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0)
}

.feature-card:first-child {
    transition-delay: 0s
}

.feature-card:nth-child(2) {
    transition-delay: 0.1s
}

.feature-card:nth-child(3) {
    transition-delay: 0.2s
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl)
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    background: var(--gradient-hero);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white)
}

.feature-icon svg {
    width: 32px;
    height: 32px
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md)
}

.feature-text {
    color: var(--gray-600);
    line-height: 1.7
}

.app-features {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, #f0f4ff 0, #e8f0fe 50%, #f5f0ff 100%)
}

.app-features-subtitle {
    text-align: center;
    color: var(--gray-600);
    font-size: var(--font-size-lg);
    margin-top: calc(-1 * var(--spacing-lg));
    margin-bottom: var(--spacing-2xl)
}

.app-features-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-3xl);
    flex-wrap: wrap
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 320px
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--gray-800);
    transition: var(--transition-base)
}

.feature-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
    background: var(--primary-blue);
    color: var(--white)
}

.feature-bullet {
    font-size: 1.3rem;
    flex-shrink: 0
}

.feature-item-more {
    background: linear-gradient(135deg, #6366f1 0, #8b5cf6 100%);
    color: var(--white);
    font-weight: 600
}

.feature-item-more:hover {
    background: linear-gradient(135deg, #8b5cf6 0, #6366f1 100%);
    transform: translateX(10px) scale(1.02)
}

.carousel-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg)
}

.phone-mockup-carousel {
    width: 280px;
    padding: 12px;
    background: var(--gray-900);
    border-radius: 36px;
    box-shadow: var(--shadow-xl), 0 0 0 3px var(--gray-700)
}

.phone-mockup-carousel .phone-screen {
    background: var(--gray-900);
    border-radius: 28px;
    overflow: hidden;
    aspect-ratio: 679/1350;
    position: relative
}

.carousel-slides {
    position: relative;
    width: 100%;
    height: 100%
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity .5s ease
}

.carousel-slide.active {
    opacity: 1
}

.carousel-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md)
}

.carousel-btn {
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: var(--white);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
    color: var(--gray-700)
}

.carousel-btn:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: scale(1.1)
}

.carousel-btn svg {
    width: 24px;
    height: 24px
}

.carousel-dots {
    display: flex;
    gap: var(--spacing-sm)
}

.carousel-dot {
    width: 12px;
    height: 12px;
    border: none;
    border-radius: 50%;
    background: var(--gray-300);
    cursor: pointer;
    transition: var(--transition-base)
}

.carousel-dot:hover {
    background: var(--gray-400)
}

.carousel-dot.active {
    background: var(--primary-blue);
    transform: scale(1.2)
}

.personalization {
    padding: var(--spacing-4xl) 0;
    background: var(--white)
}

.personalization-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .6s ease, transform .6s ease
}

.personalization-content.visible {
    opacity: 1;
    transform: translateY(0)
}

.personalization-description {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8
}

.benefit-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md)
}

.benefit-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-base);
    color: var(--gray-700)
}

.check-icon {
    width: 24px;
    height: 24px;
    color: var(--accent-teal);
    flex-shrink: 0
}

.personalization-visual {
    display: flex;
    justify-content: center
}

.phone-mockup {
    width: 260px;
    padding: 12px;
    background: var(--gray-900);
    border-radius: 36px;
    box-shadow: var(--shadow-xl), 0 0 0 3px var(--gray-700)
}

.phone-screen {
    background: var(--gradient-hero);
    border-radius: 28px;
    overflow: hidden;
    aspect-ratio: 9/16;
    display: flex;
    flex-direction: column
}

.app-screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top
}

.phone-header {
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: rgba(0, 0, 0, .2)
}

.school-logo-placeholder {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, .9);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
    color: var(--gray-500);
    font-weight: 600
}

.school-name {
    color: var(--white);
    font-weight: 600;
    font-size: var(--font-size-sm)
}

.phone-content {
    flex: 1;
    padding: var(--spacing-lg)
}

.app-preview {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md)
}

.preview-item {
    height: 60px;
    background: rgba(255, 255, 255, .15);
    border-radius: var(--radius-lg)
}

.trust {
    padding: var(--spacing-4xl) 0;
    background: var(--gray-50)
}

.logos-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-xl);
    opacity: 0;
    transition: opacity .6s ease
}

.logos-grid.visible {
    opacity: 1
}

.logo-placeholder {
    width: 100px;
    height: 100px;
    background: var(--gray-200);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    font-weight: 600;
    font-size: var(--font-size-sm);
    transition: var(--transition-base)
}

.logo-placeholder:hover {
    background: var(--gray-300);
    transform: scale(1.05)
}

.character-img {
    width: 100%;
    height: auto;
    max-width: 110px;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, .3));
    transition: var(--transition-base)
}

.character-1 .character-img {
    max-width: 140px
}

.character-2 .character-img {
    max-width: 110px
}

.character-3 .character-img {
    max-width: 130px
}

.character:hover .character-img {
    filter: drop-shadow(0 15px 30px rgba(0, 0, 0, .4));
    transform: scale(1.05)
}

.group-image-container {
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity .6s ease, transform .6s ease;
    transform: translateY(20px)
}

.group-image-container.visible {
    opacity: 1;
    transform: translateY(0)
}

.group-image {
    max-width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: contain;
    border-radius: var(--radius-xl);
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, .15))
}

.pricing {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(180deg, var(--gray-50) 0, var(--white) 100%)
}

.pricing-subtitle {
    text-align: center;
    color: var(--gray-600);
    font-size: var(--font-size-lg);
    margin-top: calc(-1 * var(--spacing-lg));
    margin-bottom: var(--spacing-2xl)
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1100px;
    margin: 0 auto;
    align-items: stretch
}

.pricing-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    position: relative;
    transition: var(--transition-base);
    border: 2px solid transparent
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl)
}

.plan-free {
    border-color: var(--gray-200)
}

.plan-free .plan-icon {
    background: linear-gradient(135deg, #64748b 0, #94a3b8 100%)
}

.plan-free .plan-btn {
    background: var(--gray-100);
    color: var(--gray-700)
}

.plan-free .plan-btn:hover {
    background: var(--gray-200)
}

.plan-popular {
    border-color: var(--primary-blue);
    transform: scale(1.02);
    padding-top: calc(var(--spacing-xl) + 16px)
}

.plan-popular:hover {
    transform: scale(1.02) translateY(-8px)
}

.popular-badge {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary-orange) 0, var(--accent-orange) 100%);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 700;
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .15)
}

.plan-popular .plan-icon {
    background: linear-gradient(135deg, var(--primary-blue) 0, #3b82f6 100%)
}

.plan-popular .plan-btn {
    background: linear-gradient(135deg, var(--primary-blue) 0, #3b82f6 100%);
    color: var(--white)
}

.plan-popular .plan-btn:hover {
    background: linear-gradient(135deg, #3b82f6 0, var(--primary-blue) 100%);
    transform: scale(1.05)
}

.plan-school {
    border-color: #7c3aed
}

.plan-school .plan-icon {
    background: linear-gradient(135deg, #7c3aed 0, #a855f7 100%)
}

.plan-school .plan-btn {
    background: linear-gradient(135deg, #7c3aed 0, #a855f7 100%);
    color: var(--white)
}

.plan-school .plan-btn:hover {
    background: linear-gradient(135deg, #a855f7 0, #7c3aed 100%);
    transform: scale(1.05)
}

.plan-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    color: var(--white)
}

.plan-icon svg {
    width: 32px;
    height: 32px
}

.plan-name {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--gray-900);
    text-align: center;
    margin-bottom: var(--spacing-sm)
}

.plan-price {
    text-align: center;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px
}

.plan-price .currency {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--gray-600)
}

.plan-price .price {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--gray-900)
}

.plan-price .period {
    font-size: var(--font-size-base);
    color: var(--gray-500)
}

.plan-description {
    text-align: center;
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg)
}

.plan-features {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--spacing-xl) 0;
    flex-grow: 1
}

.plan-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    color: var(--gray-700);
    font-size: var(--font-size-sm);
    border-bottom: 1px solid var(--gray-100)
}

.plan-features li:last-child {
    border-bottom: none
}

.plan-features li svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: var(--accent-teal)
}

.plan-features li.included-from-previous {
    font-weight: 600;
    color: var(--gray-900)
}

.plan-features li.included-from-previous svg {
    color: var(--primary-blue)
}

.plan-btn {
    display: block;
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-base)
}

@media (max-width:768px) {
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px
    }

    .plan-popular {
        transform: none;
        order: -1
    }

    .plan-popular:hover {
        transform: translateY(-8px)
    }
}

.footer {
    padding: var(--spacing-3xl) 0;
    background: var(--gray-900);
    color: var(--white)
}

.footer-content {
    text-align: center;
    margin-bottom: var(--spacing-2xl)
}

.footer-cta {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg)
}

.footer-email {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--primary-orange-light);
    font-size: var(--font-size-lg);
    font-weight: 500;
    transition: var(--transition-base)
}

.footer-email:hover {
    color: var(--primary-orange)
}

.email-icon {
    width: 24px;
    height: 24px
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--gray-700);
    color: var(--gray-400);
    font-size: var(--font-size-sm);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: center
}

.privacy-link {
    color: var(--gray-400);
    text-decoration: none;
    transition: var(--transition-base)
}

.privacy-link:hover {
    color: var(--white);
    text-decoration: underline
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px)
    }

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

@keyframes float {

    0%,
    100% {
        transform: translateY(0)
    }

    50% {
        transform: translateY(-15px)
    }
}

@keyframes floatSymbol {

    0%,
    100% {
        transform: translateY(0) rotate(0);
        opacity: .2
    }

    50% {
        transform: translateY(-20px) rotate(10deg);
        opacity: .4
    }
}

@media (min-width:640px) {
    .section-title {
        font-size: var(--font-size-3xl)
    }

    .hero-title {
        font-size: var(--font-size-4xl)
    }

    .store-buttons {
        flex-direction: row;
        max-width: none;
        justify-content: center
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr)
    }

    .features-grid .feature-card:last-child {
        grid-column: span 2;
        max-width: 400px;
        margin: 0 auto
    }

    .characters-container {
        max-width: 500px;
        height: 350px
    }

    .character-img {
        max-width: 140px
    }

    .character-1 .character-img {
        max-width: 160px
    }
}

@media (min-width:1024px) {
    .mobile-menu-btn {
        display: none
    }

    .nav-menu {
        position: static;
        width: auto;
        height: auto;
        background: 0 0;
        padding: 0;
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-xl);
        box-shadow: none
    }

    .nav-link {
        padding: var(--spacing-sm) 0;
        font-size: var(--font-size-sm);
        border-bottom: none;
        position: relative
    }

    .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--primary-blue);
        transition: var(--transition-base)
    }

    .nav-link:hover::after {
        width: 100%
    }

    .btn-access {
        margin-top: 0;
        padding: var(--spacing-sm) var(--spacing-lg)
    }

    .hero {
        padding: calc(var(--navbar-height) + var(--spacing-3xl)) 0 var(--spacing-3xl)
    }

    .hero-container {
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-3xl)
    }

    .hero-content {
        flex: 1;
        text-align: left
    }

    .hero-title {
        font-size: var(--font-size-5xl)
    }

    .hero-subtitle {
        margin-left: 0;
        margin-right: 0
    }

    .cta-block {
        align-items: flex-start
    }

    .hero-visual {
        flex: 1;
        min-height: 450px
    }

    .characters-container {
        max-width: 500px;
        height: 400px
    }

    .character-img {
        max-width: 150px
    }

    .character-1 .character-img {
        max-width: 180px
    }

    .features-grid {
        grid-template-columns: repeat(3, 1fr)
    }

    .features-grid .feature-card:last-child {
        grid-column: auto;
        max-width: none
    }

    .personalization-content {
        flex-direction: row;
        align-items: center
    }

    .personalization-text {
        flex: 1
    }

    .personalization-visual {
        flex: 1
    }

    .footer-cta {
        font-size: var(--font-size-3xl)
    }
}

@media (min-width:1280px) {
    .hero-title {
        font-size: var(--font-size-6xl)
    }

    .hero-subtitle {
        font-size: var(--font-size-xl)
    }

    .section-title {
        font-size: var(--font-size-4xl)
    }

    .characters-container {
        max-width: 550px;
        height: 450px
    }

    .symbol {
        font-size: var(--font-size-4xl)
    }
}

@media (prefers-reduced-motion:reduce) {

    *,
    ::after,
    ::before {
        animation-duration: 0s !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0s !important
    }

    html {
        scroll-behavior: auto
    }
}

/* Modal de Suscripción - Pantalla Completa Estilo App */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    /* Fondo con gradiente azul semitransparente (65-75%) sobre la imagen para que se vean las fórmulas */
    background: linear-gradient(180deg, rgba(30, 58, 138, 0.75) 0%, rgba(30, 58, 138, 0.65) 100%),
        url('assets/fondo.webp') center center / cover no-repeat !important;
    background-color: #1e3a8a !important;
    z-index: 99999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    padding: 2rem;
}


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

.modal-content {
    background: transparent !important;
    width: 100%;
    max-width: 400px;
    padding: 0;
    position: relative;
    text-align: center;
    transform: translateY(20px);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    border: none !important;
    box-shadow: none !important;
}



.modal-overlay.active .modal-content {
    transform: translateY(0)
}

.modal-close {
    position: fixed;
    top: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    font-size: 1.5rem;
    color: #fff;
    cursor: pointer;
    line-height: 1;
    padding: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all .2s ease;
    z-index: 10001
}

.modal-close:hover {
    background-color: rgba(255, 255, 255, 0.3);
    color: #fff;
    transform: scale(1.1)
}

.modal-header {
    margin-bottom: 2.5rem
}

.modal-header h3 {
    font-size: clamp(2rem, 8vw, 3rem);
    color: #fff;
    margin-bottom: 1.5rem;
    font-weight: 800;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2)
}

.modal-header p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.15rem;
    line-height: 1.6
}

.modal-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    width: 100%
}

.store-badge-container {
    background: transparent;
    padding: 0;
    border-radius: 0;
    width: 100%;
    border: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem
}

.modal-instruction {
    margin-bottom: 1rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    font-size: 1rem
}

.btn-store.large {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    background-color: #fff;
    color: var(--gray-900);
    padding: 16px 32px;
    border-radius: 50px;
    text-decoration: none;
    transition: transform .2s ease, box-shadow .2s ease;
    border: none;
    width: 100%;
    max-width: 300px;
    font-weight: 600;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15)
}

.btn-store.large:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25)
}

.btn-store.large .store-icon {
    width: 28px;
    height: 28px
}

.btn-store.large .store-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1.2;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600
}

.btn-store.large .store-text small {
    font-size: .7rem;
    opacity: .7;
    text-transform: uppercase;
    letter-spacing: .5px;
    font-weight: 500
}

/* Botón iOS estilo */
.btn-store-ios {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    background-color: #fff;
    color: var(--gray-900);
    padding: 16px 32px;
    border-radius: 50px;
    text-decoration: none;
    transition: transform .2s ease, box-shadow .2s ease;
    border: none;
    width: 100%;
    max-width: 300px;
    font-weight: 600;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    cursor: default;
    opacity: 0.9
}

.btn-store-ios .store-text {
    font-size: 1rem
}

.modal-note {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
    font-style: normal;
    margin-top: 1rem
}