:root {
    color-scheme: light;
    --ink: #0f172a;
    --muted: #475569;
    --line: #cbd5e1;
    --bg: #f8fafc;
    --card: #ffffff;
    --accent: #0f766e;
    --warn: #b45309;
    --ok: #047857;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: "Segoe UI", system-ui, sans-serif;
    background: var(--bg);
    color: var(--ink);
}
.card {
    max-width: 32rem;
    margin: 3rem auto;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 2rem;
}
.eyebrow { letter-spacing: 0.08em; text-transform: uppercase; font-size: 0.75rem; color: var(--muted); }
h1 { margin: 0.25rem 0 0.75rem; font-size: 1.6rem; }
.lead, .hint { color: var(--muted); line-height: 1.5; }
label { display: block; margin: 0.9rem 0; font-size: 0.9rem; }
input {
    display: block;
    width: 100%;
    margin-top: 0.35rem;
    padding: 0.6rem 0.7rem;
    border: 1px solid var(--line);
    border-radius: 8px;
    font: inherit;
}
button {
    margin-top: 0.6rem;
    background: var(--accent);
    color: #fff;
    border: 0;
    border-radius: 8px;
    padding: 0.7rem 1rem;
    font: inherit;
    cursor: pointer;
}
.banner {
    background: #fff7ed;
    color: var(--warn);
    border: 1px solid #fdba74;
    border-radius: 8px;
    padding: 0.75rem 0.9rem;
    margin: 1rem 0;
    font-size: 0.9rem;
}
.banner.ok { background: #ecfdf5; color: var(--ok); border-color: #6ee7b7; }
.banner.warn { background: #fff7ed; color: var(--warn); }
dl { display: grid; grid-template-columns: 7rem 1fr; gap: 0.4rem 1rem; }
dt { color: var(--muted); }
code { font-size: 0.85em; }
a { color: var(--accent); }