.online-security-body {
    background: #0A192F;
    color: #E6F1FF;
    font-family: "Open Sans", sans-serif;
    line-height: 1.75;
}

.online-security-body h1,
.online-security-body h2,
.online-security-body h3 {
    font-family: "Poppins", sans-serif;
    line-height: 1.25;
}

.online-security-body header a:focus-visible,
.online-security-body main a:focus-visible,
.online-security-body summary:focus-visible {
    outline: 3px solid #FDE047;
    outline-offset: 3px;
    border-radius: 0.2rem;
}

.online-security-main {
    min-height: 60vh;
    padding-bottom: 5rem;
}

.os-container {
    width: min(100% - 3rem, 72rem);
    margin-inline: auto;
}

.os-breadcrumb {
    padding-top: 2rem;
    padding-bottom: 1.5rem;
    color: #CBD5E1;
    font-size: 0.9rem;
}

.os-breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.os-breadcrumb a,
.os-content a,
.os-card-link {
    color: #7DD3FC;
    text-decoration: underline;
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.2em;
}

.os-breadcrumb a:hover,
.os-content a:hover,
.os-card-link:hover {
    color: #BAE6FD;
}

.os-hero {
    padding: 2.5rem 0 2rem;
    max-width: 68rem;
}

.os-eyebrow {
    color: #7DD3FC;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.os-hero h1 {
    max-width: 20ch;
    margin: 0.5rem 0 1rem;
    color: #FFFFFF;
    font-size: clamp(2rem, 5vw, 3.6rem);
    font-weight: 700;
}

.os-lead {
    max-width: 70ch;
    color: #E6F1FF;
    font-size: clamp(1.08rem, 2vw, 1.3rem);
}

.os-section-heading {
    margin: 2rem 0 1rem;
    color: #FFFFFF;
    font-size: clamp(1.45rem, 3vw, 2rem);
}

.os-card {
    max-width: 56rem;
    padding: clamp(1.25rem, 4vw, 2rem);
    border: 1px solid #475569;
    border-radius: 1rem;
    background: #17263B;
    box-shadow: 0 1rem 2.5rem rgb(0 0 0 / 0.18);
}

.os-category {
    margin-top: 2.75rem;
}

.os-category > h2 {
    margin: 0 0 1rem;
    color: #FFFFFF;
    font-size: clamp(1.35rem, 3vw, 1.8rem);
}

.os-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 19rem), 1fr));
    gap: 1rem;
}

.os-card-grid .os-card {
    display: flex;
    flex-direction: column;
}

.os-card-meta {
    margin: 0 0 0.5rem;
    color: #CBD5E1;
    font-size: 0.9rem;
    font-weight: 600;
}

.os-card h2 {
    margin: 0 0 0.75rem;
    color: #FFFFFF;
    font-size: clamp(1.4rem, 3vw, 1.9rem);
}

.os-card h3 {
    margin: 0 0 0.75rem;
    color: #FFFFFF;
    font-size: clamp(1.2rem, 2.4vw, 1.55rem);
    line-height: 1.35;
}

.os-card p {
    max-width: 68ch;
}

.os-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.9rem;
    margin-top: 0.75rem;
    padding: 0.7rem 1.15rem;
    border: 2px solid #7DD3FC;
    border-radius: 0.5rem;
    background: #075985;
    color: #FFFFFF !important;
    font-weight: 700;
    text-decoration: none !important;
}

.os-card-grid .os-button {
    align-self: flex-start;
    margin-top: auto;
}

.os-button:hover {
    background: #0C4A6E;
}

.os-content {
    max-width: 74ch;
    color: #E6F1FF;
}

.os-content h2 {
    margin: 2.8rem 0 0.8rem;
    color: #FFFFFF;
    font-size: clamp(1.45rem, 3vw, 2rem);
    scroll-margin-top: 7rem;
}

.os-content h3 {
    margin: 1.6rem 0 0.6rem;
    color: #F8FAFC;
    font-size: 1.2rem;
    scroll-margin-top: 7rem;
}

.os-content p,
.os-content li {
    max-width: 72ch;
}

.os-content ul,
.os-content ol {
    padding-left: 1.4rem;
}

.os-content li + li {
    margin-top: 0.45rem;
}

.os-summary,
.os-note,
.os-quote {
    margin: 1.5rem 0;
    padding: 1rem 1.25rem;
    border-left: 4px solid #38BDF8;
    border-radius: 0.35rem;
    background: #17263B;
}

.os-summary h2 {
    margin-top: 0;
}

.os-quote {
    color: #FFFFFF;
    font-size: 1.12rem;
    font-weight: 700;
}

.os-toc {
    margin: 1.5rem 0 2rem;
    padding: 1.25rem 1.5rem;
    border: 1px solid #475569;
    border-radius: 0.75rem;
    background: #111F33;
}

.os-toc h2 {
    margin: 0 0 0.5rem;
    color: #FFFFFF;
    font-size: 1.1rem;
}

.os-toc ol {
    margin: 0;
    padding-left: 1.35rem;
}

.os-faq details {
    margin: 0.75rem 0;
    border: 1px solid #475569;
    border-radius: 0.65rem;
    background: #17263B;
}

.os-faq summary {
    padding: 1rem 1.1rem;
    color: #FFFFFF;
    cursor: pointer;
    font-weight: 700;
}

.os-faq details p {
    margin: 0;
    padding: 0 1.1rem 1rem;
}

.os-sources {
    padding-left: 1.35rem;
}

.os-sources li + li {
    margin-top: 0.65rem;
}

.os-cta {
    margin-top: 2rem;
    padding: 1.5rem;
    border: 1px solid #475569;
    border-radius: 0.9rem;
    background: #111F33;
}

.os-cta h2 {
    margin-top: 0;
}

@media (max-width: 640px) {
    .os-container {
        width: min(100% - 2rem, 72rem);
    }

    .os-breadcrumb {
        padding-top: 1.25rem;
    }

    .os-hero {
        padding-top: 1.5rem;
    }

    .os-card {
        border-radius: 0.75rem;
    }
}