* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, sans-serif; background: #f6f6f4; color: #1a1a1a; line-height: 1.5; }
header, main { max-width: 960px; margin: 0 auto; padding: 0 16px; }
header { padding-top: 20px; }
h1 { font-size: 1.6rem; margin: 0 0 8px; }
h2 { font-size: 1.2rem; margin: 0 0 12px; }
section { background: #fff; border: 1px solid #d8d8d4; border-radius: 8px; padding: 16px; margin: 16px 0; }
.note { background: #eef5ee; border: 1px solid #b7d4b7; padding: 8px 12px; border-radius: 6px; }
.small { font-size: 0.85rem; color: #444; }
.msg { font-size: 0.9rem; color: #333; margin: 4px 0; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 8px 0; }
button { font: inherit; padding: 6px 12px; border: 1px solid #555; background: #fff; border-radius: 6px; cursor: pointer; }
button:hover { background: #ececec; }
button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 3px solid #0072b2; outline-offset: 2px; }
input[type="text"], input[type="number"], textarea { font: inherit; padding: 5px 8px; border: 1px solid #777; border-radius: 6px; }
input[type="text"] { width: 8rem; font-family: ui-monospace, monospace; }
input[type="number"] { width: 5rem; }
input[type="color"] { width: 44px; height: 34px; padding: 0; border: 1px solid #555; border-radius: 6px; background: none; }
textarea { width: 100%; font-family: ui-monospace, monospace; }
label { display: block; font-weight: 600; margin-top: 8px; }
.row label { display: inline; margin: 0; }
.swatches { display: flex; flex-wrap: wrap; gap: 10px; margin: 12px 0; }
.swatch { border: 1px solid #bbb; border-radius: 8px; padding: 8px; width: 150px; background: #fafafa; }
.swatch-chip { height: 40px; border-radius: 4px; border: 1px solid #888; margin-bottom: 6px; }
.swatch .row { margin: 4px 0; gap: 4px; }
.swatch input[type="text"] { width: 5.5rem; }
.vision-grid { display: grid; gap: 8px; }
.vision-row { display: grid; grid-template-columns: 9rem 1fr; gap: 8px; align-items: center; }
.vision-label { font-weight: 600; font-size: 0.9rem; }
.vision-strip { display: flex; min-height: 44px; border: 1px solid #888; border-radius: 6px; overflow: hidden; }
.vision-cell { flex: 1; min-width: 20px; }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 0.9rem; }
th, td { border: 1px solid #ccc; padding: 4px 8px; text-align: left; white-space: nowrap; }
th { background: #eee; }
td.low { background: #fde2e0; font-weight: 700; }
.pair-chips { display: inline-flex; gap: 2px; vertical-align: middle; margin-right: 6px; }
.pair-chip { display: inline-block; width: 18px; height: 18px; border: 1px solid #666; border-radius: 3px; }
.flag { color: #8a1c10; font-weight: 700; }
.okay { color: #14571d; font-weight: 700; }
.contrast-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 700px) { .contrast-grid { grid-template-columns: 1fr; } .vision-row { grid-template-columns: 1fr; } }
.ratio { font-size: 1.1rem; }
.badges { list-style: none; padding: 0; margin: 0; display: grid; gap: 4px; }
.badges li { padding: 4px 8px; border-radius: 4px; border: 1px solid; font-size: 0.9rem; }
.badges li.pass { background: #e3f4e5; border-color: #2e7d32; color: #14571d; }
.badges li.fail { background: #fde2e0; border-color: #b3261e; color: #8a1c10; }
.sample { padding: 20px; border-radius: 8px; border: 1px solid #888; min-height: 180px; }
.sample p { margin: 0 0 12px; }
.sample-large { font-size: 24px; }
.sample-button { font-weight: 700; padding: 8px 16px; border-width: 2px; border-style: solid; border-radius: 6px; background: transparent; }
.sample-button:hover { background: transparent; }