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

:root {
    --primary: #0066cc;
    --primary-dark: #0052a3;
    --primary-light: #e6f0ff;
    --secondary: #ff6b35;
    --text-dark: #1a1a1a;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --border: #e0e0e0;
    --success: #28a745;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background: #fff;
}

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

/* Header */
.header {
    background: #fff;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.nav {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
}

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

.cta-btn {
    background: var(--primary);
    color: white;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.cta-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
    padding: 80px 20px;
    background: linear-gradient(135deg, var(--primary-light) 0%, #fff 100%);
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.hero .tagline {
    font-size: 1.3rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 15px;
}

.hero .description {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 30px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 50px;
}

.btn {
    padding: 14px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 102, 204, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-secondary:hover {
    background: var(--primary-light);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary-light);
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.1rem;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 5px;
}

.hero-image {
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 102, 204, 0.15);
}

.placeholder-image {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, var(--primary) 0%, #0052a3 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    font-weight: 600;
}

/* Benefits Section */
.benefits {
    padding: 80px 20px;
    background: white;
}

.benefits h2,
.products h2,
.how-it-works h2,
.reviews h2,
.faq h2,
.cta-section h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 60px;
    color: var(--text-dark);
}

.section-intro {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto 50px;
    line-height: 1.8;
}

.benefits h2,
.products h2,
.how-it-works h2,
.reviews h2,
.faq h2 {
    margin-bottom: 20px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.benefit-card {
    background: var(--bg-light);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.benefit-card:hover {
    border-color: var(--primary);
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 102, 204, 0.15);
}

.benefit-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.benefit-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.benefit-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* Products Section */
.products {
    padding: 80px 20px;
    background: var(--bg-light);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: white;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.product-card:hover {
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
    transform: translateY(-5px);
}

.product-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-light) 0%, #f0f8ff 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.product-card p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.6;
}

.product-price {
    font-size: 1.5rem;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 20px;
}

.slider-prev {
    left: 20px;
}

.slider-next {
    right: 20px;
}

/* Slider Dots */
.slider-dots {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 30px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border);
    cursor: pointer;
    transition: all 0.3s;
}

.dot.active {
    background: var(--primary);
    width: 32px;
    border-radius: 6px;
}

.dot:hover {
    background: var(--primary-dark);
}

/* How It Works */
.how-it-works {
    padding: 80px 20px;
    background: white;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    position: relative;
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0 auto 20px;
}

.step h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.step p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Reviews Section */
.reviews {
    padding: 80px 20px;
    background: var(--bg-light);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.review-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.review-card .stars {
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.review-card p {
    color: var(--text-dark);
    font-style: italic;
    margin-bottom: 15px;
    line-height: 1.7;
}

.reviewer {
    color: var(--text-light);
    font-size: 0.9rem;
    font-weight: 600;
}

/* FAQ Section */
.faq {
    padding: 80px 20px;
    background: white;
}

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

.faq-item {
    margin-bottom: 20px;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.faq-question {
    background: var(--bg-light);
    padding: 20px;
    font-weight: 600;
    cursor: pointer;
    display: block;
    user-select: none;
    transition: all 0.3s;
}

.faq-question:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.faq-answer {
    padding: 20px;
    background: white;
    color: var(--text-light);
    display: none;
    line-height: 1.7;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-item.active .faq-question {
    background: var(--primary-light);
    color: var(--primary);
}

/* CTA Section */
.cta-section {
    padding: 80px 20px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    text-align: center;
    color: white;
}

.cta-section h2 {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.95;
}

.cta-section .btn-primary {
    background: white;
    color: var(--primary);
}

.cta-section .btn-primary:hover {
    background: var(--bg-light);
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 30px 20px;
    text-align: center;
}

.footer a {
    color: #99ccff;
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        grid-template-columns: 1fr;
        padding: 40px 20px;
        gap: 30px;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-image {
        order: -1;
    }

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

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .nav {
        display: none;
    }

    .header .container {
        padding: 10px 20px;
    }

    .benefits h2,
    .products h2,
    .how-it-works h2,
    .reviews h2,
    .faq h2,
    .cta-section h2 {
        font-size: 1.8rem;
        margin-bottom: 40px;
    }

    .benefits,
    .products,
    .how-it-works,
    .reviews,
    .faq,
    .cta-section {
        padding: 50px 20px;
    }
}

/* Loading Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.benefit-card,
.product-card,
.review-card {
    animation: fadeIn 0.6s ease-out forwards;
}