:root {
    color-scheme: dark;
    --ink: #eefbff;
    --muted: #a9cbd7;
    --panel: rgba(5, 30, 45, 0.82);
    --line: rgba(113, 222, 230, 0.3);
    --cyan: #57e2df;
    --gold: #ffd166;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--ink);
    background:
        radial-gradient(circle at 70% 10%, rgba(87, 226, 223, 0.2), transparent 28rem),
        linear-gradient(150deg, #03111c 0%, #062f47 52%, #07445e 100%);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.65;
}

a {
    color: var(--cyan);
}

.shell {
    width: min(880px, calc(100% - 32px));
    margin: 0 auto;
    padding: 42px 0 64px;
}

.nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 28px;
}

.nav a,
.button {
    display: inline-block;
    padding: 10px 16px;
    color: var(--ink);
    text-decoration: none;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(3, 17, 28, 0.55);
}

.nav a:hover,
.nav a:focus-visible,
.button:hover,
.button:focus-visible {
    border-color: var(--cyan);
    outline: none;
}

.hero,
.card {
    border: 1px solid var(--line);
    border-radius: 24px;
    background: var(--panel);
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.25);
}

.hero {
    padding: clamp(28px, 6vw, 62px);
}

.card {
    margin-top: 20px;
    padding: clamp(22px, 4vw, 36px);
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--gold);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

h1,
h2 {
    line-height: 1.16;
}

h1 {
    margin: 0;
    font-size: clamp(2.2rem, 8vw, 4.8rem);
    letter-spacing: -0.04em;
}

h2 {
    margin: 0 0 12px;
    color: var(--gold);
    font-size: 1.35rem;
}

p,
ul {
    margin: 10px 0;
}

.lede {
    max-width: 650px;
    color: var(--muted);
    font-size: 1.15rem;
}

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

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.grid .card {
    margin-top: 0;
}

footer {
    padding-top: 26px;
    color: var(--muted);
    text-align: center;
    font-size: 0.9rem;
}

@media (max-width: 520px) {
    .shell {
        padding-top: 24px;
    }

    .hero,
    .card {
        border-radius: 18px;
    }
}