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

:root {
    --primary-blue: #4A90D9;
    --light-blue: #87CEEB;
    --lighter-blue: #B0D4F1;
    --pale-blue: #E3F2FD;
    --white: #FFFFFF;
    --dark-text: #1A365D;
    --medium-text: #2D5986;
    --light-text: #5A7FA8;
    --gradient-start: #E8F4FD;
    --gradient-end: #FFFFFF;
    --shadow-light: rgba(74, 144, 217, 0.15);
    --shadow-medium: rgba(74, 144, 217, 0.25);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(180deg, var(--gradient-start) 0%, var(--white) 100%);
    min-height: 100vh;
    color: var(--dark-text);
    line-height: 1.6;
}

header {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--lighter-blue);
}

.navbar {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo img {
    width: 42px;
    height: 42px;
    filter: drop-shadow(0 2px 4px var(--shadow-light));
}

.logo span {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    letter-spacing: -0.5px;
}

.nav-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.btn-nav-login {
    text-decoration: none;
    color: var(--primary-blue);
    font-weight: 600;
    padding: 0.5rem 1.25rem;
    border-radius: 0.5rem;
    transition: all 0.2s ease;
}

.btn-nav-login:hover {
    background: var(--pale-blue);
}

.btn-nav-signup {
    text-decoration: none;
    background: linear-gradient(135deg, var(--primary-blue), #3B7DC4);
    color: white;
    font-weight: 600;
    padding: 0.5rem 1.25rem;
    border-radius: 0.5rem;
    transition: all 0.2s ease;
    box-shadow: 0 2px 10px var(--shadow-light);
}

.btn-nav-signup:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px var(--shadow-medium);
    color: white;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.hero {
    padding: 5rem 0 3rem;
    text-align: center;
}

.hero-text h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--dark-text), var(--primary-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text h2 {
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--medium-text);
    margin-bottom: 1.5rem;
}

.hero-text p {
    font-size: 1.1rem;
    color: var(--light-text);
    margin-bottom: 2rem;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
}

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

.btn-hero-primary {
    display: inline-block;
    text-decoration: none;
    background: linear-gradient(135deg, var(--primary-blue), #3B7DC4);
    color: white;
    font-weight: 700;
    padding: 0.85rem 2rem;
    border-radius: 0.75rem;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px var(--shadow-medium);
}

.btn-hero-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--shadow-medium);
    color: white;
}

.btn-hero-secondary {
    display: inline-block;
    text-decoration: none;
    background: white;
    color: var(--primary-blue);
    font-weight: 700;
    padding: 0.85rem 2rem;
    border-radius: 0.75rem;
    font-size: 1.1rem;
    border: 2px solid var(--lighter-blue);
    transition: all 0.3s ease;
}

.btn-hero-secondary:hover {
    border-color: var(--primary-blue);
    transform: translateY(-3px);
    box-shadow: 0 4px 15px var(--shadow-light);
}

.features {
    padding: 5rem 0;
    text-align: center;
}

.features h2 {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: white;
    border-radius: 1.25rem;
    padding: 2rem 1.5rem;
    box-shadow: 0 4px 20px var(--shadow-light);
    transition: all 0.3s ease;
    border: 1px solid var(--pale-blue);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-medium);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: 0.75rem;
}

.feature-card p {
    font-size: 0.95rem;
    color: var(--light-text);
    line-height: 1.5;
}

.how-it-works {
    padding: 5rem 0;
    text-align: center;
}

.how-it-works h2 {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: 3rem;
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.step {
    background: white;
    border-radius: 1.25rem;
    padding: 2.5rem 2rem;
    box-shadow: 0 4px 20px var(--shadow-light);
    border: 1px solid var(--pale-blue);
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-blue), var(--light-blue));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
    box-shadow: 0 4px 15px var(--shadow-medium);
}

.step h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: 0.75rem;
}

.step p {
    font-size: 1rem;
    color: var(--light-text);
}

.pricing {
    padding: 5rem 0;
    text-align: center;
}

.pricing h2 {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: 0.75rem;
}

.pricing-subtitle {
    font-size: 1.1rem;
    color: var(--light-text);
    margin-bottom: 3rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    border-radius: 1.25rem;
    padding: 2.5rem 2rem;
    box-shadow: 0 4px 20px var(--shadow-light);
    border: 1px solid var(--pale-blue);
    position: relative;
    transition: all 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-medium);
}

.pricing-card.featured {
    border: 2px solid var(--primary-blue);
    box-shadow: 0 8px 30px var(--shadow-medium);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary-blue), var(--light-blue));
    color: white;
    padding: 0.3rem 1.25rem;
    border-radius: 2rem;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.pricing-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: 1rem;
}

.price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
}

.price span {
    font-size: 1rem;
    font-weight: 500;
    color: var(--light-text);
}

.pricing-card ul {
    list-style: none;
    padding: 0;
    text-align: left;
}

.pricing-card li {
    padding: 0.5rem 0;
    color: var(--medium-text);
    font-size: 0.95rem;
    border-bottom: 1px solid var(--pale-blue);
}

.pricing-card li:last-child {
    border-bottom: none;
}

.pricing-card li::before {
    content: "✓ ";
    color: var(--primary-blue);
    font-weight: 700;
}

.cta-section {
    padding: 5rem 0;
    text-align: center;
}

.cta-content {
    background: linear-gradient(135deg, var(--dark-text), #2D5986);
    border-radius: 1.5rem;
    padding: 4rem 3rem;
    color: white;
    box-shadow: 0 10px 40px rgba(26, 54, 93, 0.3);
}

.cta-content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.btn-cta {
    display: inline-block;
    text-decoration: none;
    background: white;
    color: var(--dark-text);
    font-weight: 700;
    padding: 0.85rem 2rem;
    border-radius: 0.75rem;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.btn-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
}

footer {
    background: linear-gradient(180deg, var(--white), var(--pale-blue));
    padding: 3rem 2rem;
    text-align: center;
    margin-top: 3rem;
    border-top: 1px solid var(--lighter-blue);
}

footer p {
    color: var(--medium-text);
    font-size: 1rem;
    font-weight: 500;
}

@media (max-width: 1024px) {
    .hero-text h1 {
        font-size: 2.25rem;
    }

    .steps {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
}

@media (max-width: 640px) {
    .hero-text h1 {
        font-size: 1.75rem;
    }

    .hero-text h2 {
        font-size: 1.1rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .navbar {
        flex-direction: column;
        gap: 1rem;
    }

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

    .pricing-grid {
        grid-template-columns: 1fr;
    }
}