body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background: linear-gradient(135deg, #f9fafb 0%, #f0f4f8 100%);
}

#intro, #about, #features {
    padding: 4rem 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

#intro {
    text-align: center;
    padding: 6rem 2rem;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--blue-dark) 100%);
    color: var(--white);
    border-radius: 12px;
    margin: 2rem auto;
    max-width: 1000px;
    width: calc(100% - 4rem);
    box-shadow: 0 4px 20px rgba(153, 153, 255, 0.15);
}

#intro h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
}

#intro > div {
    margin-bottom: 3rem;
    font-size: 1.1rem;
    line-height: 1.8;
    opacity: 0.95;
}

#intro p {
    margin-bottom: 1rem;
}


#get-started {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

#get-started button {
    background-color: var(--white);
    color: var(--primary-blue);
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

#get-started button:hover {
    background-color: var(--bg-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

#get-started button:active {
    transform: translateY(0);
}

#get-started a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 2px solid var(--white);
    padding-bottom: 0.25rem;
    transition: all 0.3s ease;
}

#get-started a:hover {
    opacity: 0.8;
}

#about {
    margin-top: 2rem;
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

#about h2 {
    font-size: 2rem;
    color: var(--primary-blue);
    margin-bottom: 2rem;
    font-weight: 700;
}

#about p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.8;
}

#about p:last-child {
    margin-bottom: 0;
}

#features {
    margin-top: 2rem;
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

#features h2 {
    font-size: 2rem;
    color: var(--primary-blue);
    margin-bottom: 2rem;
    font-weight: 700;
}

#features ul {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

#features li {
    padding: 1.5rem;
    background: var(--bg-light);
    border-left: 4px solid var(--primary-blue);
    border-radius: 8px;
    font-weight: 500;
    color: var(--text-dark);
    transition: all 0.3s ease;
}

#features li:hover {
    background: linear-gradient(135deg, rgba(153, 153, 255, 0.05) 0%, rgba(153, 153, 255, 0.02) 100%);
    transform: translateX(4px);
    border-left-color: var(--blue-dark);
    box-shadow: 0 4px 12px rgba(153, 153, 255, 0.1);
}

@media (max-width: 768px) {
    #intro {
        padding: 3rem 1.5rem;
        margin: 1rem auto;
        width: calc(100% - 3rem);
    }

    #intro h1 {
        font-size: 2rem;
        margin-bottom: 1.5rem;
    }

    #intro > div {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    #get-started button {
        padding: 0.875rem 2rem;
        font-size: 1rem;
    }

    #about, #features {
        padding: 2rem 1.5rem;
        margin-left: 1rem;
        margin-right: 1rem;
    }

    #about h2, #features h2 {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
    }

    #features ul {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    #intro h1 {
        font-size: 1.5rem;
    }

    #intro > div {
        font-size: 0.95rem;
    }

    #about h2, #features h2 {
        font-size: 1.25rem;
    }

    #features li {
        padding: 1rem;
    }
}