:root {
    color-scheme: dark;
    --background: #081126;
    --surface: #142344;
    --surface-strong: #1d315b;
    --text: #f7f9ff;
    --muted: #c6d1e8;
    --accent: #f0bd55;
    --link: #a8caff;
    --line: #3a527e;
}

* { box-sizing: border-box; }

html { background: var(--background); }

body {
    margin: 0;
    background:
        radial-gradient(circle at 15% 0, rgba(51, 88, 155, .42), transparent 34rem),
        linear-gradient(180deg, #101d39, var(--background) 42rem);
    color: var(--text);
    font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
    line-height: 1.65;
}

a { color: var(--link); }
a:hover, a:focus-visible { color: #fff; }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }

.shell { width: min(960px, calc(100% - 2rem)); margin: 0 auto; }

header { padding: 1.25rem 0; }

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.brand {
    color: var(--text);
    font-size: 1.08rem;
    font-weight: 900;
    letter-spacing: .12em;
    text-decoration: none;
    text-transform: uppercase;
}

.nav-links { display: flex; gap: .4rem; flex-wrap: wrap; }
.nav-links a { padding: .45rem .7rem; border-radius: 999px; text-decoration: none; }
.nav-links a[aria-current="page"] { background: var(--accent); color: #17120a; font-weight: 850; }

main { padding: 1rem 0 4rem; }

.hero, .panel {
    background: linear-gradient(145deg, rgba(29, 49, 91, .97), rgba(14, 28, 57, .98));
    border: 1px solid var(--line);
    border-radius: 1.25rem;
    box-shadow: 0 1.25rem 3rem rgba(0, 0, 0, .28);
    padding: clamp(1.25rem, 5vw, 3.25rem);
}

.hero { margin-bottom: 1.25rem; }
.eyebrow { color: var(--accent); font-size: .78rem; font-weight: 900; letter-spacing: .16em; text-transform: uppercase; }
h1 { margin: .35rem 0 1rem; font-size: clamp(2.15rem, 7vw, 4.35rem); line-height: 1.03; }
h2 { margin: 2.1rem 0 .45rem; font-size: 1.45rem; line-height: 1.2; }
h3 { margin: 1.5rem 0 .35rem; }
p, li { color: var(--muted); }
strong { color: var(--text); }
.updated { color: #dce5f7; font-size: .92rem; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 245px), 1fr)); gap: 1rem; }
.card { display: block; padding: 1.35rem; background: var(--surface); border: 1px solid var(--line); border-radius: 1rem; text-decoration: none; }
.card h2 { color: var(--text); margin: 0 0 .35rem; }
.card p { margin: 0; }
.card:hover, .card:focus-visible { background: var(--surface-strong); transform: translateY(-2px); }

.notice { margin: 1.25rem 0; padding: 1rem 1.1rem; border-left: .3rem solid var(--accent); background: rgba(240, 189, 85, .1); border-radius: .4rem; }
.notice p { margin: 0; }
.summary { border: 1px solid var(--line); background: rgba(8, 17, 38, .5); border-radius: 1rem; padding: 1rem 1.25rem; }
.summary ul { margin-bottom: 0; }

footer { border-top: 1px solid var(--line); padding: 1.5rem 0 2rem; text-align: center; }
footer p { margin: .2rem 0; font-size: .9rem; }
.footer-links { display: flex; justify-content: center; flex-wrap: wrap; gap: .8rem; margin-bottom: .75rem; }

@media (max-width: 560px) {
    .nav { align-items: flex-start; }
    .nav-links { width: 100%; }
    .nav-links a { padding-inline: .55rem; }
}