:root {
    /* Colors */
    --color-primary: #ab0634; /* dark red */
    --color-primary-light: #d4074a; /* bright red */
    --color-surface: #ffffff; /* white */
    --color-text-dark: #2d3748; /* dark blue gray */
    --color-text-medium: #4a5568; /* medium blue gray */
    --color-text-light: #718096; /* light blue gray */
    --color-border-light: #eaeef1; /* very light gray */
    --color-border-medium: #e2e8f0; /* light gray */
    --color-bg-light: #f8f9fa; /* off white */
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #ab0634 0%, #d4074a 100%); /* dark red to bright red */
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1); /* light black shadow */
    --shadow-md: 0 4px 12px rgba(171, 6, 52, 0.3); /* red tinted shadow */
    --shadow-lg: 0 6px 20px rgba(0, 0, 0, 0.2); /* medium black shadow */
    --shadow-xl: 0 8px 25px rgba(0, 0, 0, 0.3); /* strong black shadow */
    --shadow-hover: 0 6px 16px rgba(171, 6, 52, 0.4); /* strong red shadow */
}

.content-section {
    background-color: var(--color-surface);
    margin: 40px auto;
    padding: 60px 40px;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
}

.demo-section {
    text-align: center;
    padding-bottom: 50px;
    margin-bottom: 50px;
    border-bottom: 3px solid var(--color-border-light);
}

    .demo-section h2 {
        font-size: 36px;
        margin-bottom: 20px;
        font-weight: 700;
    }

    .demo-section p {
        font-size: 18px;
        line-height: 1.7;
        margin-bottom: 15px;
        margin-left: auto;
        margin-right: auto;
    }

        .demo-section p:last-of-type {
            margin-bottom: 35px;
        }

.btn-demo {
    display: inline-block;
    background: var(--gradient-primary);
    color: var(--color-surface);
    padding: 20px 60px;
    text-decoration: none;
    border-radius: 8px;
    font-size: 20px;
    font-weight: 700;
    transition: all 0.3s;
    box-shadow: var(--shadow-lg);
}

    .btn-demo:hover {
        background-color: var(--color-bg-light);
        box-shadow: var(--shadow-xl);
        transform: translateY(-3px);
        color: var(--color-surface);
        text-decoration: none;
    }

.support-section {
    margin-bottom: 50px;
}

.company-info {
    text-align: center;
    padding-top: 50px;
    border-top: 2px solid var(--color-border-medium);
    color: var(--color-text-medium);
}

    .company-info h3 {
        font-size: 22px;
        font-weight: 700;
        margin-bottom: 15px;
        color: var(--color-text-dark);
    }

    .company-info p {
        font-size: 16px;
        line-height: 1.6;
        margin: 5px 0;
    }

.intro-text {
    text-align: center;
    margin-bottom: 50px;
}

    .intro-text h2 {
        color: var(--color-text-dark);
        font-size: 32px;
        margin-bottom: 20px;
        font-weight: 700;
    }

    .intro-text p {
        color: var(--color-text-medium);
        font-size: 17px;
        line-height: 1.6;
        max-width: 900px;
        margin: 0 auto 15px;
    }

    .intro-text .note {
        color: var(--color-text-light);
        font-size: 16px;
        font-style: italic;
        margin-top: 20px;
    }

.button-container {
    display: flex;
    gap: 40px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 40px;
}

.contact-button {
    flex: 1;
    min-width: 300px;
    max-width: 450px;
    background-color: var(--color-primary);
    color: var(--color-surface);
    padding: 40px 30px;
    text-align: center;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

    .contact-button:hover {
        background-color: var(--color-primary-light);
        box-shadow: var(--shadow-hover);
        transform: translateY(-2px);
    }

    .contact-button .title {
        font-size: 36px;
        font-weight: 700;
        margin-bottom: 15px;
        text-transform: uppercase;
        letter-spacing: 1px;
    }

    .contact-button .subtitle {
        font-size: 16px;
        font-weight: 400;
        line-height: 1.5;
        opacity: 0.95;
    }

@media (min-width: 769px) and (max-width: 992px) {
    .contact-button .title {
        font-size: 24px;
    }

    .contact-button .subtitle {
        font-size: 16px;
    }
}

@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 20px;
    }

    .page-header h1 {
        font-size: 28px;
    }

    .intro-text h2 {
        font-size: 24px;
    }

    .intro-text p {
        font-size: 16px;
    }

    .button-container {
        gap: 20px;
    }

    .contact-button {
        min-width: 100%;
    }

        .contact-button .title {
            font-size: 28px;
        }

    .content-section {
        padding: 40px 20px;
        margin: 20px auto;
    }
}