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

:root {
    --primary: #6366f1;
    --secondary: #ec4899;
    --accent: #f59e0b;
    --dark: #1f2937;
    --light: #f9fafb;
    --gray: #6b7280;
    --radius: 12px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: white;
}

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

/* Header */
header {
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar {
    padding: 1.2rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
}

.logo-icon {
    font-size: 1.8rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary);
}

/* Hero Section */
.hero {
    color: white;
    padding: 60px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.cta-button {
    padding: 12px 32px;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-block;
}

.cta-button.primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}

.cta-button.secondary {
    background: white;
    color: var(--primary);
    border: 2px solid white;
}

.cta-button.secondary:hover {
    background: transparent;
    transform: translateY(-2px);
}

/* Section Styling */
section {
    padding: 80px 0;
}

section h2 {
    font-size: 2.8rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--dark);
}

.section-subtitle {
    text-align: center;
    font-size: 1.3rem;
    color: var(--primary);
    margin-bottom: 2rem;
    font-weight: 600;
}

.section-intro {
    text-align: center;
    font-size: 1.05rem;
    color: var(--gray);
    max-width: 700px;
    margin: 0 auto 3rem;
    line-height: 1.8;
}

/* Why Section */
.why-section {
    background: var(--light);
}

.why-content {
    max-width: 800px;
    margin: 0 auto 3rem;
    text-align: center;
}

.lead-text {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.description {
    font-size: 1.05rem;
    color: var(--gray);
    line-height: 1.9;
}

.why-pillars {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.pillar {
    background: white;
    padding: 2rem;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: var(--transition);
}

.pillar:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.pillar-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.pillar h3 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.pillar p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* Books Section */
.books-section {
    background: white;
}

.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.book-card {
    background: linear-gradient(135deg, #f5f7fa, white);
    padding: 2rem;
    border-radius: var(--radius);
    border-left: 4px solid var(--primary);
    transition: var(--transition);
}

.book-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-left-color: var(--secondary);
}

.book-number {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.book-card h3 {
    color: var(--dark);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.book-card p {
    color: var(--gray);
    margin-bottom: 1.5rem;
    line-height: 1.7;
    font-size: 0.95rem;
}

.age-tag {
    display: inline-block;
    background: #e0e7ff;
    color: var(--primary);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.buy-button {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    margin-top: 1rem;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.buy-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(99, 102, 241, 0.3);
}

.book-image {
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    overflow: hidden;
    background: linear-gradient(135deg, #f5f7fa, #e8ecf1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--primary);
    font-size: 1.1rem;
    text-align: center;
    padding: 1rem;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
}

.book-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius);
}

.character-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.character-img-benjamin {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: left center;
    border-radius: 50%;
}

.character-img-boris {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: right center;
    border-radius: 50%;
}

.hero1 {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    color: white;
}

.hero2 {
    background: linear-gradient(135deg, #ec4899 0%, #f43f5e 100%);
    color: white;
}

.hero3 {
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    color: white;
}

.character-showcase {
    margin-top: 4rem;
    padding-top: 4rem;
    border-top: 2px solid #e5e7eb;
}

.character-showcase h3 {
    font-size: 2rem;
    text-align: center;
    color: var(--dark);
    margin-bottom: 3rem;
}

.character-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.character-card {
    text-align: center;
    background: var(--light);
    padding: 2rem;
    border-radius: var(--radius);
    transition: var(--transition);
}

.character-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.character-image {
    font-size: 5rem;
    margin-bottom: 1.5rem;
    display: inline-block;
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.boris-image {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
}

.benjamin-image {
    background: linear-gradient(135deg, #06b6d4, #0891b2);
}

.character-card h4 {
    color: var(--primary);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.character-card p {
    color: var(--gray);
    line-height: 1.7;
    font-size: 0.95rem;
}

.book-cta {
    text-align: center;
    margin-top: 3rem;
}

.book-cta a {
    text-decoration: none;
}


/* Method Section */
.method-section {
    background: var(--light);
}

.method-overview {
    max-width: 800px;
    margin: 2rem auto;
    text-align: center;
    font-size: 1.05rem;
    color: var(--gray);
    line-height: 1.8;
}

.research-basis {
    max-width: 800px;
    margin: 2rem auto 3rem;
    padding: 1.5rem;
    background: #f0f4ff;
    border-left: 4px solid var(--primary);
    border-radius: 8px;
    text-align: center;
    font-size: 0.95rem;
    color: var(--dark);
    line-height: 1.7;
}

.subsection-title {
    font-size: 1.8rem;
    color: var(--dark);
    text-align: center;
    margin: 3rem 0 2rem;
}

.forces-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.force {
    padding: 2rem;
    border-radius: var(--radius);
    color: white;
    text-align: center;
    transition: var(--transition);
}

.force.thread {
    background: linear-gradient(135deg, #E04F00, #FF6B35);
}

.force.flow {
    background: linear-gradient(135deg, #008080, #00A0A0);
}

.force.pulse {
    background: linear-gradient(135deg, #C2185B, #E91E63);
}

.force.play {
    background: linear-gradient(135deg, #F59E0B, #FBBF24);
}

.force:hover {
    transform: translateY(-4px);
    filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.15));
}

.force-symbol {
    display: block;
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.force-label {
    display: block;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.force p {
    font-size: 0.95rem;
    line-height: 1.5;
}

.force-subtitle {
    font-size: 0.8rem;
    opacity: 0.85;
    margin-top: 0.8rem;
    font-style: italic;
}

.capacities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
}

.capacity {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 2px solid #e5e7eb;
    text-align: center;
    transition: var(--transition);
}

.capacity:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
}

.capacity-label {
    color: var(--dark);
    font-weight: 600;
    font-size: 0.95rem;
}

/* Stories Section */
.stories-section {
    background: white;
}

.stories-model {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin: 3rem 0;
    flex-wrap: wrap;
}

.step {
    flex: 1;
    min-width: 200px;
    background: linear-gradient(135deg, var(--light), white);
    padding: 2rem;
    border-radius: var(--radius);
    border: 2px solid #e5e7eb;
    text-align: center;
    transition: var(--transition);
}

.step:hover {
    border-color: var(--primary);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.step-number {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.step h3 {
    color: var(--dark);
    margin-bottom: 1rem;
}

.step p {
    color: var(--gray);
    font-size: 0.95rem;
    line-height: 1.6;
}

.step-arrow {
    font-size: 2rem;
    color: var(--primary);
    display: none;
}

@media (min-width: 768px) {
    .step-arrow {
        display: block;
    }
}

/* Periodic Table */
.periodic-section {
    background: var(--light);
}

.periodic-note {
    text-align: center;
    font-size: 0.9rem;
    color: var(--gray);
    max-width: 700px;
    margin: 1.5rem auto 3rem;
    padding: 1rem;
    line-height: 1.6;
}

.periodic-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 1rem;
    margin: 3rem 0;
}

.element {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    color: white;
    font-weight: 600;
}

.element .symbol {
    font-size: 1.5rem;
    font-weight: 700;
}

.element .name {
    font-size: 0.75rem;
    margin-top: 0.3rem;
    text-align: center;
    font-weight: 500;
}

.element:hover {
    transform: scale(1.08);
    filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.2));
}

.element.joy { background: linear-gradient(135deg, #fbbf24, #f59e0b); }
.element.curiosity { background: linear-gradient(135deg, #60a5fa, #3b82f6); }
.element.empathy { background: linear-gradient(135deg, #ec4899, #f43f5e); }
.element.courage { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.element.kindness { background: linear-gradient(135deg, #10b981, #059669); }
.element.creativity { background: linear-gradient(135deg, #f472b6, #ec4899); }
.element.resilience { background: linear-gradient(135deg, #ef4444, #dc2626); }
.element.honesty { background: linear-gradient(135deg, #06b6d4, #0891b2); }
.element.confidence { background: linear-gradient(135deg, #facc15, #eab308); }
.element.patience { background: linear-gradient(135deg, #a78bfa, #9333ea); }
.element.wonder { background: linear-gradient(135deg, #38bdf8, #0ea5e9); }
.element.growth { background: linear-gradient(135deg, #34d399, #10b981); }

/* About Section */
.about-section {
    background: white;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.about-card {
    background: var(--light);
    padding: 2rem;
    border-radius: var(--radius);
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.about-card h3 {
    color: var(--primary);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.about-card p {
    color: var(--gray);
    line-height: 1.7;
    font-size: 0.95rem;
}

.about-card ul {
    list-style: none;
    color: var(--gray);
    font-size: 0.95rem;
    line-height: 1.8;
}

.about-card li:before {
    content: "✓ ";
    color: var(--primary);
    font-weight: bold;
    margin-right: 0.5rem;
}

.roadmap {
    background: linear-gradient(135deg, #f5f7fa, white);
    padding: 3rem;
    border-radius: var(--radius);
    margin-top: 3rem;
}

.roadmap h3 {
    text-align: center;
    color: var(--dark);
    margin-bottom: 2rem;
    font-size: 1.8rem;
}

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

.phase {
    text-align: center;
    padding: 1.5rem;
    background: white;
    border-radius: var(--radius);
    border-left: 4px solid var(--primary);
}

.phase h4 {
    color: var(--primary);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.phase p {
    color: var(--gray);
    font-size: 0.9rem;
    line-height: 1.6;
}

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

.connect-section h2 {
    color: white;
}

.connect-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.connect-option {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: var(--radius);
    backdrop-filter: blur(10px);
    text-align: center;
    transition: var(--transition);
}

.connect-option:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-4px);
}

.connect-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.connect-option h3 {
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.connect-option p {
    font-size: 0.95rem;
    line-height: 1.6;
    opacity: 0.9;
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
    padding: 12px 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.95);
    color: var(--dark);
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
    outline: none;
    border-color: white;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
}

/* Footer */
footer {
    background: linear-gradient(135deg, #1f2937, #111827);
    color: white;
    text-align: center;
    padding: 2.5rem 0;
}

footer p {
    font-size: 0.95rem;
    margin: 0.5rem 0;
    opacity: 0.9;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
        font-size: 0.85rem;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    section h2 {
        font-size: 2rem;
    }

    .section-subtitle {
        font-size: 1.1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .stories-model {
        flex-direction: column;
    }

    .book-card, .pillar, .step {
        margin: 0;
    }
}