:root {
    --bg: #f6f8fb;
    --surface: #ffffff;
    --text: #14202e;
    --muted: #536274;
    --border: #dde3eb;
    --brand: #0b4f7c;
    --brand-strong: #083b5d;
    --accent: #1f9d8b;
    --hero-from: #0b4f7c;
    --hero-to: #0e6e8f;
    --hero-text: #ffffff;
    color-scheme: light;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0d141c;
        --surface: #141e29;
        --text: #e6edf5;
        --muted: #9aabbd;
        --border: #24313f;
        --brand: #5bb2e6;
        --brand-strong: #8ccbf0;
        --accent: #4fd1bc;
        --hero-from: #0a2a42;
        --hero-to: #0b3d52;
        --hero-text: #f2f7fb;
        color-scheme: dark;
    }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 17px;
    line-height: 1.6;
}

a { color: var(--brand); }
a:hover { color: var(--brand-strong); }

.wrap {
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 16px;
}

/* Header */
.site-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}
.site-header .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 64px;
}
.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--text);
    text-decoration: none;
}
.logo svg { flex: none; }
.site-header nav a {
    margin-left: 20px;
    color: var(--muted);
    text-decoration: none;
    font-size: 0.95rem;
}
.site-header nav a:hover { color: var(--text); }

/* Hero */
.hero {
    background: linear-gradient(135deg, var(--hero-from), var(--hero-to));
    color: var(--hero-text);
    padding: 72px 0 80px;
}
.hero h1 {
    margin: 0 0 16px;
    font-size: clamp(1.9rem, 4.5vw, 2.9rem);
    line-height: 1.15;
    max-width: 18em;
}
.hero p {
    margin: 0 0 28px;
    font-size: 1.15rem;
    max-width: 36em;
    opacity: 0.92;
}
.button {
    display: inline-block;
    padding: 12px 22px;
    border-radius: 8px;
    background: var(--hero-text);
    color: var(--hero-from);
    font-weight: 600;
    text-decoration: none;
}
.button:hover { color: var(--hero-from); opacity: 0.9; }

/* Sections */
section { padding: 64px 0; }
section h2 {
    margin: 0 0 8px;
    font-size: 1.7rem;
    line-height: 1.25;
}
.lead {
    margin: 0 0 32px;
    color: var(--muted);
    max-width: 40em;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
}
.card h3 {
    margin: 12px 0 6px;
    font-size: 1.1rem;
}
.card p { margin: 0; color: var(--muted); }
.icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    background: color-mix(in srgb, var(--accent) 15%, transparent);
    color: var(--accent);
}

.alt { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.audience {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}
.audience li strong { display: block; margin-bottom: 4px; }
.audience li span { color: var(--muted); }

.contact dl {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 8px 24px;
    margin: 0;
}
.contact dt { color: var(--muted); }
.contact dd { margin: 0; overflow-wrap: anywhere; }

/* Footer */
.site-footer {
    padding: 32px 0 40px;
    color: var(--muted);
    font-size: 0.9rem;
    border-top: 1px solid var(--border);
}
.site-footer .wrap {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px 24px;
}
.site-footer p { margin: 0; }

/* Policy pages */
.policy { padding: 48px 0 64px; }
.policy .wrap { max-width: 760px; }
.policy h1 { font-size: 2rem; margin: 0 0 4px; }
.policy h2 { font-size: 1.25rem; margin: 32px 0 8px; }
.policy .updated { color: var(--muted); margin: 0 0 24px; }

@media (max-width: 560px) {
    .site-header nav a { margin-left: 14px; }
    .site-header nav a.hide-sm { display: none; }
    .hero { padding: 48px 0 56px; }
    section { padding: 48px 0; }
    .contact dl { grid-template-columns: 1fr; gap: 2px; }
    .contact dd { margin-bottom: 10px; }
}