:root {
    color-scheme: dark;
    --background: #232323;
    --surface: #1a2637;
    --surface-hover: #24354c;
    --accent: #0084d4;
    --accent-light: #59bfff;
    --text: #ffffff;
    --muted: #c3ccd5;
    --border: #75879c;
    --content-width: 960px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    min-height: 100vh;
    margin: 0;
    background: var(--background);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    font-size: 1rem;
    line-height: 1.7;
}
a { color: var(--accent-light); }
a:hover { color: var(--text); }
a:focus-visible { outline: 3px solid var(--accent-light); outline-offset: 4px; }
.skip-link {
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 10;
    padding: 0.65rem 1rem;
    border-radius: 0.25rem;
    background: var(--text);
    color: var(--surface);
    font-weight: 700;
    transform: translateY(-200%);
}
.skip-link:focus { color: var(--surface); transform: translateY(0); }
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
.site-header, main, .site-footer {
    width: min(calc(100% - 2.5rem), var(--content-width));
    margin-inline: auto;
}
.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 6rem;
    border-bottom: 1px solid var(--border);
}
.site-name {
    color: var(--text);
    font-size: clamp(1.25rem, 3vw, 1.65rem);
    font-weight: 700;
    letter-spacing: 0.01em;
    text-decoration: none;
}
.nav-list {
    display: flex;
    gap: 0.4rem;
    margin: 0;
    padding: 0;
    list-style: none;
}
.nav-list a {
    display: block;
    padding: 0.55rem 0.8rem;
    border-radius: 0.3rem;
    color: var(--muted);
    font-weight: 700;
    text-decoration: none;
}
.nav-list a:hover { background: var(--surface); color: var(--text); }
.nav-list a[aria-current="page"] {
    background: var(--surface);
    color: var(--accent-light);
    box-shadow: inset 0 -3px 0 var(--accent);
}
main { padding-block: clamp(3.5rem, 8vw, 7rem); }
.hero {
    display: grid;
    grid-template-columns: minmax(220px, 320px) minmax(0, 1fr);
    gap: clamp(2.5rem, 7vw, 6rem);
    align-items: center;
}
.profile-photo {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    border: 5px solid var(--accent);
    border-radius: 50%;
    box-shadow: 0 1.25rem 3rem rgba(0, 0, 0, 0.35);
    object-fit: cover;
}
.eyebrow {
    margin: 0 0 0.7rem;
    color: var(--accent-light);
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.18; }
h1 {
    max-width: 15ch;
    margin-bottom: 1.5rem;
    font-size: clamp(2.35rem, 6vw, 4.6rem);
    font-weight: 700;
    letter-spacing: -0.04em;
}
h2 { margin-bottom: 0.75rem; font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { margin-bottom: 0.75rem; font-size: 1.25rem; }
.intro { color: var(--text); font-size: clamp(1.1rem, 2vw, 1.28rem); line-height: 1.65; }
.hero-copy > p:not(.eyebrow), .page-intro > p:not(.eyebrow), .contact-panel p, .card p:not(.card-number), .link-description, .group-description { color: var(--muted); }
.section { margin-top: clamp(5rem, 11vw, 9rem); }
.section-heading { margin-bottom: 2rem; }
.link-grid, .card-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin: 0;
    padding: 0;
    list-style: none;
}
.link-grid a, .card {
    display: flex;
    min-height: 8rem;
    padding: 1.35rem;
    border: 1px solid var(--border);
    border-radius: 0.55rem;
    background: var(--surface);
}
.link-grid a {
    flex-direction: column;
    justify-content: space-between;
    color: var(--text);
    font-size: 1.15rem;
    font-weight: 700;
    text-decoration: none;
    transition: border-color 160ms ease, background-color 160ms ease, transform 160ms ease;
}
.link-grid a::after {
    content: "Open in a new tab ↗";
    color: var(--accent-light);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}
.link-grid a:hover { border-color: var(--accent-light); background: var(--surface-hover); color: var(--text); transform: translateY(-2px); }
.link-description { font-size: 0.9rem; font-weight: 400; }
.page-intro { max-width: 760px; }
.page-intro h1 { max-width: 17ch; }
.card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card { flex-direction: column; min-height: 15rem; }
.card p:last-child { margin-bottom: 0; }
.card-number {
    margin-bottom: auto;
    color: var(--accent-light);
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}
.organization-link {
    color: var(--text);
    text-decoration-color: var(--accent);
    text-decoration-thickness: 2px;
    text-underline-offset: 0.2em;
}
.organization-link::after { content: " ↗"; color: var(--accent-light); }
.group-list {
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--border);
    list-style: none;
}
.group-list li { border-bottom: 1px solid var(--border); }
.group-list a {
    display: grid;
    grid-template-columns: minmax(12rem, 0.75fr) minmax(0, 1.5fr) auto;
    gap: 1.5rem;
    align-items: center;
    padding: 1.4rem 0.25rem;
    color: var(--text);
    text-decoration: none;
}
.group-list a::after { content: "↗"; color: var(--accent-light); font-size: 1.15rem; }
.group-list a:hover .group-name { color: var(--accent-light); }
.group-name { font-size: 1.08rem; font-weight: 700; }
.group-description { font-size: 0.95rem; }
.contact-panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    margin-top: clamp(5rem, 11vw, 9rem);
    padding: clamp(1.5rem, 5vw, 3rem);
    border-left: 5px solid var(--accent);
    background: var(--surface);
}
.contact-panel p:last-child { margin-bottom: 0; }
.button {
    flex: 0 0 auto;
    padding: 0.75rem 1.1rem;
    border: 2px solid var(--accent-light);
    border-radius: 0.35rem;
    color: var(--text);
    font-weight: 700;
    text-decoration: none;
}
.button:hover { background: var(--accent-light); color: var(--surface); }
.site-footer {
    padding-block: 1.5rem 2.5rem;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.9rem;
}
.site-footer p { margin: 0; }
@media (max-width: 720px) {
    .site-header { min-height: 5rem; }
    main { padding-block: 3.5rem; }
    .hero { grid-template-columns: 1fr; gap: 2.5rem; }
    .profile-photo { width: min(72vw, 280px); }
    .link-grid, .card-grid { grid-template-columns: 1fr; }
    .group-list a { grid-template-columns: 1fr auto; gap: 0.25rem 1rem; }
    .group-description { grid-column: 1; }
    .group-list a::after { grid-column: 2; grid-row: 1 / span 2; }
    .card { min-height: 12rem; }
    .contact-panel { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 420px) {
    .site-header { align-items: flex-start; flex-direction: column; justify-content: center; gap: 0.35rem; padding-block: 0.8rem; }
    .nav-list a { padding: 0.35rem 0.7rem 0.35rem 0; }
    .nav-list a[aria-current="page"] { background: transparent; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .link-grid a { transition: none; }
}