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

:root {
    --primary-color: #d32f2f;
    --secondary-color: #1976d2;
    --dark-bg: #0a0a0a;
    --light-bg: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --accent: #ffd700;
}

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

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    letter-spacing: 2px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s;
}

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

.cta-button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: transform 0.2s, background-color 0.3s;
}

.cta-button:hover {
    background-color: #b71c1c;
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    margin-top: 80px;
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding: 4rem 2rem;
    gap: 4rem;
}

.hero-content {
    flex: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--primary-color), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.primary-cta {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 5px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s, background-color 0.3s;
}

.primary-cta:hover {
    background-color: #b71c1c;
    transform: translateY(-2px);
}

.primary-cta.large {
    font-size: 1.3rem;
    padding: 1.2rem 3rem;
}

.secondary-cta {
    background-color: transparent;
    color: white;
    border: 2px solid var(--primary-color);
    padding: 1rem 2rem;
    border-radius: 5px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
}

.secondary-cta:hover {
    background-color: var(--primary-color);
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--accent);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.hero-visual {
    flex: 1;
    min-height: 500px;
}

#hero-3d-container {
    width: 100%;
    height: 100%;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(211, 47, 47, 0.1), rgba(25, 118, 210, 0.1));
}

/* Features Section */
.features {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

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

.feature-card {
    background-color: var(--light-bg);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(211, 47, 47, 0.3);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

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

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* How It Works Section */
.how-it-works {
    padding: 6rem 2rem;
    background-color: var(--light-bg);
}

.steps-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.step {
    flex: 1;
    min-width: 250px;
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: bold;
    margin: 0 auto 1.5rem;
}

.step-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.step-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.step-visual {
    margin-top: 1rem;
}

.step-icon {
    font-size: 4rem;
}

.step-arrow {
    font-size: 3rem;
    color: var(--primary-color);
}

/* Demo Section */
.demo-section {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.demo-container {
    width: 100%;
    height: 600px;
    background: linear-gradient(135deg, rgba(211, 47, 47, 0.1), rgba(25, 118, 210, 0.1));
    border-radius: 10px;
    margin-bottom: 2rem;
    border: 2px solid rgba(255, 255, 255, 0.1);
}

.demo-controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.demo-controls button {
    background-color: var(--light-bg);
    color: white;
    border: 2px solid var(--primary-color);
    padding: 0.75rem 1.5rem;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s;
}

.demo-controls button:hover {
    background-color: var(--primary-color);
}

/* AI Guarantee Section */
.ai-guarantee {
    padding: 6rem 2rem;
    background: linear-gradient(135deg, var(--light-bg), var(--dark-bg));
}

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

.guarantee-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--accent);
}

.guarantee-tagline {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.guarantee-features {
    text-align: left;
}

.guarantee-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 5px;
}

.check {
    font-size: 1.5rem;
    color: var(--accent);
    font-weight: bold;
}

/* Testimonials Section */
.testimonials {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

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

.testimonial-card {
    background-color: var(--light-bg);
    padding: 2rem;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.testimonial-card.featured {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, rgba(211, 47, 47, 0.2), rgba(25, 118, 210, 0.2));
    border: 2px solid var(--accent);
}

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

.testimonial-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
}

.testimonial-avatar-small {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.testimonial-title {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.testimonial-content {
    margin-bottom: 1rem;
}

.testimonial-content p {
    font-style: italic;
    color: var(--text-secondary);
    line-height: 1.8;
}

.testimonial-rating {
    color: var(--accent);
    font-size: 1.2rem;
}

/* Final CTA Section */
.final-cta {
    padding: 6rem 2rem;
    text-align: center;
    background-color: var(--light-bg);
}

.final-cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.final-cta p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.cta-note {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background-color: var(--dark-bg);
    padding: 3rem 2rem 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .nav-links {
        display: none;
    }

    .steps-container {
        flex-direction: column;
    }

    .step-arrow {
        transform: rotate(90deg);
    }

    .testimonial-card.featured {
        grid-column: auto;
    }
}