:root {
    --citynet-red: #E62B27;
    --citynet-red-transparent-50: rgba(230, 43, 39, 0.5);
    --citynet-blue: #005A7F;
    --citynet-blue-transparent-10: rgba(0, 90, 127, 0.1);
    --citynet-blue-transparent-3: rgba(0, 90, 127, 0.02);
    --citynet-background-grey: #F5F5F5;
    --dark-text: #333;
    --frame-color: #e0e0e0;
    --keywords-background: #eef3ef;
    --faq-background: #fcfcfc;
    --faq-frame: #ddd;
    --faq-content-text: #555;
    --about-section-background: #eee;
}

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark-text);
    margin: 0;
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: auto;
}


.header-box {
    background-color: var(--citynet-background-grey);
    padding: 60px 60px 30px 60px;
    text-align: center;
}

.header-box-error {
    background-color: var(--citynet-background-grey);
    padding: 60px 60px 20px 60px;
    text-align: center;
}

@media (max-width: 768px) {
    .header-box,
    .header-box-error {
        padding: 60px 20px 40px 20px;
    }
}

.badge {
    display: inline-block;
    background: var(--citynet-blue);
    color: white;
    padding: 5px 15px;
    border-radius: 40px;
    font-size: 0.9rem;
}

h1 {
    font-size: clamp(1rem, 6vw, 3.5rem);
    margin: 20px 0;
    font-weight: bold;
}

.seo-intro {
    max-width: 800px;
    margin: 0 auto 30px;
}

.intro-text {
    font-size: 1.2rem;
}

.cta-btn {
    display: inline-block;
    background: var(--citynet-red-transparent-50);
    padding: 15px 20px;
    border-radius: 5px;
    transition: 0.3s ease;
    text-align: center;
    text-decoration: none;
    color: black;
    font-weight: bold;
    font-size: 1.2rem;
}

.cta-btn:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transform: scale(1.02);
}


.section-padding {
    padding: 60px 0;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.card {
    border: 1px solid var(--frame-color);
    border-radius: 10px;
    padding: 25px;
    transition: 0.3s;
    max-width: 100vw;
}

.card:hover {
box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.card h3 {
margin-top: 0;
color: var(--citynet-blue);
}

.keywords {
font-size: 0.85rem;
background: var(--citynet-blue-transparent-10);
padding: 10px;
border-radius: 5px;
margin-top: 15px;
}


details {
    background: var(--faq-background);
    border: 1px solid var(--faq-frame);
    margin-bottom: 10px;
    border-radius: 5px;
}

summary {
    padding: 15px;
    cursor: pointer;
    font-weight: bold;
    color: var(--citynet-blue);
    list-style: none;
}

summary::-webkit-details-marker {
    display: none;
}

.faq-content {
    padding: 0 15px 15px;
    color: var(--faq-content-text);
}


.form-section {
    background: var(--citynet-blue-transparent-3);
    padding: 60px 0;
}

.form-box {
    background: white;
    padding: 40px 40px 40px 40px;
    border-radius: 10px;
    max-width: 700px;
    margin: auto;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    transition: 0.3s;
}

.form-box:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.footer-box {
    background-color: var(--citynet-background-grey);
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    text-align: center;
    align-items: center;
}

.footer-btn {
    display: inline-block;
    border-radius: 5px;
    margin: 20px;
    padding: 10px;
}

.footer-link {
    color: var(--citynet-blue);
    background-color: var(--faq-background);
    cursor: pointer;
    text-decoration: none;
    border: 1px solid var(--frame-color);
    border-radius: 5px;
    padding: 15px 30px;
    transition: 0.3s ease;
}

.footer-link:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}


.about-section {
    padding: 60px 0;
    border-top: 1px solid var(--about-section-background);
}

.contact-info {
    border-left: 4px solid var(--citynet-blue);
    padding-left: 20px;
    margin-top: 20px;
}