:root {
  --bg: #f5f7fa; --card: #fff; --text: #1a2333; --muted: #5b6577; --line: #dde2ea;
  --accent: #0b5fff; --ok: #12805c; --ok-bg: #dcf5ea; --warn: #8a5a00; --warn-bg: #fdf0d0;
  --bad: #b3261e; --bad-bg: #fbe3e1; --neutral-bg: #e9edf3;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #10151d; --card: #182029; --text: #e6ebf3; --muted: #9aa5b8; --line: #2a3542;
    --accent: #6ea0ff; --ok: #5fd3a3; --ok-bg: #123a2c; --warn: #f2c46b; --warn-bg: #3d2f0d;
    --bad: #ff8f86; --bad-bg: #421a17; --neutral-bg: #232d3a;
  }
}
* { box-sizing: border-box; }
body { margin: 0; padding: 0 1rem 2rem; background: var(--bg); color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
.top, .layout { max-width: 1200px; margin-inline: auto; }
.top { padding-block: 1.25rem .5rem; }
h1 { margin: 0; font-size: 1.5rem; }
h2 { margin: 0 0 .75rem; font-size: 1.05rem; }
.sub { margin: .15rem 0 0; color: var(--muted); }
.layout { display: grid; grid-template-columns: minmax(280px, 340px) 1fr; gap: 1rem; align-items: start; }
@media (max-width: 800px) { .layout { grid-template-columns: 1fr; } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 1rem; min-width: 0; }
label { display: block; margin-bottom: .75rem; font-weight: 500; }
label.check { font-weight: 400; display: flex; gap: .5rem; align-items: center; }
input[type=number], select { display: block; width: 100%; margin-top: .25rem; padding: .5rem .6rem;
  border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--text); font: inherit; }
input:focus, select:focus, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.errors { margin: 0; padding: 0; list-style: none; color: var(--bad); }
.errors li { margin-top: .35rem; }
.summary { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: .75rem; }
.chip { padding: .25rem .6rem; border-radius: 999px; background: var(--neutral-bg); }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: .5rem .45rem; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; font-size: .85em; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
tr.recommended td { background: var(--ok-bg); }
.bar { display: inline-block; width: 48px; height: 8px; background: var(--neutral-bg); border-radius: 4px;
  vertical-align: middle; overflow: hidden; margin-right: .4rem; }
.bar > i { display: block; height: 100%; background: var(--accent); }
.badge { display: inline-block; padding: .1rem .5rem; border-radius: 999px; font-size: .85em; }
.badge.ok { background: var(--ok-bg); color: var(--ok); }
.badge.marginal, .badge.oversized { background: var(--warn-bg); color: var(--warn); }
.badge.insufficient { background: var(--bad-bg); color: var(--bad); }
.badge.unavailable { background: var(--neutral-bg); color: var(--muted); }
.empty, .legend { color: var(--muted); }
.actions { margin-top: .75rem; }
button { padding: .45rem .9rem; border: 1px solid var(--line); border-radius: 6px; background: var(--card);
  color: var(--text); font: inherit; cursor: pointer; }
button:hover { border-color: var(--accent); }
[hidden] { display: none !important; }
fieldset.check-row { display: flex; flex-wrap: wrap; gap: .25rem 1rem; margin: 0 0 .75rem; padding: 0; border: 0; }
fieldset.check-row legend { padding: 0; margin-bottom: .25rem; font-weight: 500; }
fieldset.check-row label.check { margin: 0; }
.hint { margin: -.25rem 0 .75rem; color: var(--muted); font-size: .9em; }
.note { display: inline-grid; place-items: center; width: 1.15em; height: 1.15em; border: 1.5px solid currentColor;
  border-radius: 50%; font: italic 700 .8em/1 Georgia, serif; cursor: help; color: var(--warn); vertical-align: middle; }
.basis { margin: .75rem 0 0; padding-left: 1.1rem; color: var(--muted); font-size: .9em; }
td.wrap { white-space: normal; min-width: 9rem; }
.top { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.logo { height: 48px; width: auto; }
.downloads { margin-left: auto; display: flex; flex-wrap: wrap; gap: .5rem; }
.btn { display: inline-flex; align-items: baseline; gap: .4rem; padding: .45rem .8rem; border: 1px solid var(--line);
  border-radius: 6px; background: var(--card); color: var(--text); text-decoration: none; }
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.btn small { color: var(--muted); }
.top > div { flex: 1 1 18rem; min-width: 0; }
@media (min-width: 801px) {
  #form { position: sticky; top: 1rem; max-height: calc(100vh - 2rem); overflow-y: auto; }
}