:root {
    --a30-bg: #f4f6f8;
    --a30-surface: #ffffff;
    --a30-primary: #146eb4;
    --a30-ink: #18181b;
    --a30-muted: #71717a;
    --a30-border: rgba(226, 232, 240, 0.5);
    --a30-accent: #ff9900;
    --a30-shell: 1200px;
    --a30-shadow: 0 20px 40px rgba(20, 110, 180, 0.08);
}

.a30-site {
    background: var(--a30-bg);
    color: var(--a30-ink);
    font-family: 'Geist', sans-serif;
}

.a30-shell {
    width: min(var(--a30-shell), calc(100% - 3rem));
    margin: 0 auto;
}

.a30-masthead {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(244, 246, 248, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--a30-border);
}

.a30-masthead__inner {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 1rem;
    min-height: 78px;
}

.a30-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.9rem;
    color: var(--a30-ink);
    text-decoration: none;
}

.a30-brand img {
    display: block;
    height: 42px;
    width: auto;
}

.a30-brand__mark {
    height: 34px !important;
}

.a30-brand__meta {
    display: grid;
    gap: 0.1rem;
}

.a30-brand__kicker {
    color: var(--a30-primary);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.a30-brand__title {
    font-size: 0.96rem;
    font-weight: 700;
    line-height: 1.2;
}

.a30-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.a30-nav a {
    color: var(--a30-muted);
    text-decoration: none;
    font-weight: 500;
}

.a30-nav a:hover,
.a30-nav a[aria-current="page"] {
    color: var(--a30-primary);
}

.a30-masthead__cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 1rem;
    border-radius: 999px;
    background: var(--a30-accent);
    color: var(--a30-ink);
    text-decoration: none;
    font-weight: 600;
}

.a30-site main {
    min-height: calc(100vh - 160px);
}

.a30-footer {
    margin-top: 4rem;
    border-top: 1px solid var(--a30-border);
    background: #ffffff;
}

.a30-footer__inner {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2rem;
    padding: 2rem 0;
}

.a30-footer__brand {
    display: grid;
    gap: 0.8rem;
}

.a30-footer__logo {
    height: 40px;
    width: auto;
}

.a30-footer__copy {
    margin: 0;
    max-width: 60ch;
    color: var(--a30-muted);
}

.a30-footer__links {
    display: grid;
    gap: 0.7rem;
    justify-items: end;
    align-content: start;
}

.a30-footer__links a {
    color: var(--a30-primary);
    text-decoration: none;
    font-weight: 500;
}

.a30-footer__legal {
    color: var(--a30-muted);
    font-size: 0.92rem;
}

@media (max-width: 900px) {
    .a30-masthead__inner,
    .a30-footer__inner {
        grid-template-columns: 1fr;
    }

    .a30-nav,
    .a30-footer__links {
        justify-content: start;
        justify-items: start;
    }
}

@media (max-width: 768px) {
    .a30-shell {
        width: min(var(--a30-shell), calc(100% - 1.5rem));
    }

    .a30-brand {
        align-items: flex-start;
    }

    .a30-nav {
        gap: 0.75rem 1rem;
    }
}