/* Public landing page: colours shared with btplatform.css. */
:root {
    color-scheme: light;
    --blue: #0066cc;
    --blue-dark: #004080;
    --ink: #333;
    --heading: #222;
    --muted: #52606d;
    --line: #e0e0e0;
    --pale-blue: #f0f5fa;
    --pale-grey: #f8f8f8;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: 190px; }
body {
    margin: 0;
    background: #fff;
    color: var(--ink);
    font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--blue); text-underline-offset: 4px; }
a:hover { color: var(--blue-dark); }
a:focus-visible { outline: 3px solid var(--blue); outline-offset: 5px; border-radius: 2px; }
p { margin: 0 0 1em; }
h1, h2, h3 { color: var(--heading); line-height: 1.2; margin: 0 0 .65em; }
h1 { font-size: clamp(2.25rem, 4.5vw, 3.75rem); letter-spacing: -.035em; }
h2 { font-size: clamp(1.7rem, 3vw, 2.25rem); letter-spacing: -.025em; }
h3 { font-size: 1.2rem; }
.page-width { width: min(1120px, calc(100% - 48px)); margin-inline: auto; }
.skip-link { position: absolute; left: 16px; top: -100px; padding: 10px 16px; background: #fff; z-index: 20; }
.skip-link:focus { top: 12px; }
.navbar { position: sticky; top: 0; z-index: 10; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 1px 3px rgb(0 0 0 / 5%); }
.brand-row { display: flex; gap: 24px; align-items: center; padding-block: 15px; }
.brand-copy { flex: 1; min-width: 0; }
.brand-name { color: var(--heading); font-size: clamp(1.6rem, 3vw, 2rem); font-weight: 750; letter-spacing: -.035em; text-decoration: none; }
.slogan { margin: 0; font-size: .95rem; }
.brand-logo { flex-shrink: 0; }
.brand-logo img { display: block; width: 76px; height: 76px; object-fit: contain; }
.navigation { display: flex; gap: 28px; flex-wrap: wrap; padding-block: 10px 13px; font-size: .9rem; }
.navigation a { text-decoration: none; font-weight: 600; }
.navigation a:hover { text-decoration: underline; }
.login-link { margin-left: auto; }
.hero { background: var(--pale-blue); border-bottom: 1px solid #cce0ff; }
.hero-content { padding-block: 64px 54px; }
.eyebrow { color: var(--blue-dark); font-size: .78rem; font-weight: 750; letter-spacing: .11em; text-transform: uppercase; margin-bottom: 16px; }
.hero .intro { max-width: 740px; font-size: 1.25rem; line-height: 1.6; }
.hero-content > p:not(.eyebrow) { max-width: 760px; }
.actions { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; margin-top: 26px; }
.button { display: inline-block; border: 1px solid var(--blue); border-radius: 5px; padding: 11px 23px; background: var(--blue); color: #fff; font-weight: 650; text-decoration: none; }
.button:hover { background: var(--blue-dark); color: #fff; border-color: var(--blue-dark); }
.text-link { font-weight: 650; }
.device-note { margin: 20px 0 0; color: var(--muted); font-size: .85rem; }
.section { padding-block: 64px; }
.section-intro { max-width: 740px; color: var(--muted); }
.service-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 40px; margin-top: 32px; }
.service { padding: 26px 0; border-top: 1px solid var(--line); }
.service-number { display: block; color: var(--blue); font-size: .85rem; font-weight: 700; margin-bottom: 12px; }
.service p { max-width: 460px; }
.service a { font-size: .95rem; font-weight: 600; }
.section-note { font-size: .875rem; color: var(--muted); margin: 16px 0 0; }
.mission-band { background: var(--pale-grey); border-block: 1px solid var(--line); }
.mission-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; padding-block: 64px; }
.mission-statement { font-size: 1.4rem; line-height: 1.5; color: var(--blue-dark); }
.commitments { border-left: 3px solid var(--blue); padding-left: 28px; }
.commitments ul { padding-left: 20px; margin: 18px 0 0; }
.commitments li { padding-left: 4px; margin-bottom: 14px; }
.commitments li:last-child { margin-bottom: 0; }
.videos-section { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: start; }
.video-links { padding-left: 25px; margin: 0; }
.video-links li { padding: 15px 0 15px 8px; border-bottom: 1px solid var(--line); }
.video-links li:first-child { padding-top: 0; }
.video-links a { font-weight: 600; }
.join-section { display: flex; justify-content: space-between; align-items: center; gap: 32px; padding: 32px; background: var(--pale-blue); border: 1px solid #cce0ff; border-radius: 6px; margin-bottom: 64px; }
.join-section h2 { font-size: 1.5rem; }
.join-section p { margin: 0; }
.join-section .actions { flex-shrink: 0; margin: 0; }
.site-footer { border-top: 1px solid var(--line); padding-block: 28px; font-size: .85rem; }
.footer-layout { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-layout p { margin: 0; }
.footer-layout nav { display: flex; gap: 10px 20px; flex-wrap: wrap; }
@media (max-width: 700px) {
    html { scroll-padding-top: 24px; }
    .page-width { width: calc(100% - 32px); }
    .navbar { position: static; }
    .brand-row { gap: 12px; }
    .brand-logo img { width: 64px; height: 64px; }
    .slogan { font-size: .8rem; max-width: 230px; }
    .navigation { gap: 10px 20px; padding-block: 8px 16px; }
    .login-link { margin-left: 0; }
    .hero-content, .section { padding-block: 40px; }
    .hero .intro { font-size: 1.1rem; }
    .service-grid, .mission-layout, .videos-section { grid-template-columns: 1fr; gap: 28px; }
    .service-grid { gap: 0; }
    .mission-layout { padding-block: 40px; }
    .mission-statement { font-size: 1.25rem; }
    .commitments { padding-left: 20px; }
    .join-section { align-items: flex-start; flex-direction: column; padding: 24px; margin-bottom: 40px; }
}