/* Spike (a): plain, high-contrast test tooling. Not product UI. */
:root {
  color-scheme: light;
  --accent: #111827;
  --ink: #111827;
  --muted: #4b5563;
  --line: #d1d5db;
  --note: #fef3c7;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 16px 16px calc(32px + env(safe-area-inset-bottom));
  font: 17px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: #fff;
}
header { border-bottom: 4px solid var(--accent); margin-bottom: 16px; }
h1 { font-size: 1.4rem; margin: 0 0 4px; }
h2 { font-size: 1.15rem; margin: 24px 0 8px; }
h3 { font-size: 1rem; margin: 16px 0 8px; }
.muted { color: var(--muted); font-size: 0.9rem; }
.note { background: var(--note); padding: 10px 12px; border-radius: 6px; }
section { max-width: 960px; }
label { display: block; margin: 10px 0; font-weight: 600; }
label.check { font-weight: 400; }
input:not([type="checkbox"]), select {
  display: block;
  width: 100%;
  max-width: 480px;
  margin-top: 4px;
  padding: 10px;
  font: inherit;
  border: 2px solid var(--line);
  border-radius: 6px;
}
input[type="checkbox"] { width: 22px; height: 22px; vertical-align: middle; margin-right: 6px; }
button {
  min-height: 48px;
  padding: 10px 18px;
  margin: 6px 6px 6px 0;
  font: inherit;
  font-weight: 700;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 8px;
}
.row { display: flex; flex-wrap: wrap; }
table { width: 100%; border-collapse: collapse; margin-top: 8px; font-size: 0.9rem; display: block; overflow-x: auto; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
td { word-break: break-word; }
.links li { margin: 8px 0; font-size: 1.1rem; }