:root { --fg: #1c2530; --muted: #51606f; --bg: #f7f9fb; --card: #ffffff; --accent: #0b5cad; --warn: #fff4d6; --line: #d5dde6; }
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--fg); background: var(--bg); line-height: 1.55; }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0.75rem 1rem; }
header nav { display: flex; flex-wrap: wrap; gap: 0.5rem 1rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--line); }
a { color: var(--accent); }
h1 { font-size: 1.6rem; line-height: 1.25; }
h2 { font-size: 1.2rem; margin-top: 1.8rem; }
.notice { background: var(--warn); border: 1px solid #e8d48a; border-radius: 6px; padding: 0.6rem 0.8rem; font-size: 0.95rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 1rem; margin: 1rem 0; }
label { display: block; font-weight: 600; margin-top: 0.9rem; }
.hint { color: var(--muted); font-size: 0.9rem; font-weight: 400; }
select, input { width: 100%; font-size: 1rem; padding: 0.6rem; margin-top: 0.3rem; border: 1px solid #aab6c3; border-radius: 6px; background: #fff; }
button { margin-top: 1.1rem; font-size: 1rem; padding: 0.7rem 1.2rem; background: var(--accent); color: #fff; border: 0; border-radius: 6px; cursor: pointer; width: 100%; }
#grupo-desc { color: var(--muted); font-size: 0.9rem; margin: 0.4rem 0 0; }
#error { color: #9b1c1c; font-weight: 600; }
table { border-collapse: collapse; width: 100%; margin: 0.8rem 0; font-size: 0.95rem; }
th, td { border: 1px solid var(--line); padding: 0.4rem 0.5rem; text-align: left; vertical-align: top; }
thead th { background: #eaf0f6; }
.num { text-align: right; white-space: nowrap; }
.scroll { overflow-x: auto; }
footer { color: var(--muted); font-size: 0.88rem; border-top: 1px solid var(--line); margin-top: 2rem; }
@media (min-width: 640px) { button { width: auto; } }