:root {
  --bg: #f5f7f6; --panel: #fff; --ink: #101614; --muted: #5a6662; --line: #dfe5e2;
  --green: #0f7b5f; --pale: #e6f3ee; --warn: #8a5300; --warn-soft: #fdf3e1; --bad: #b42318; --bad-soft: #fdecea;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Noto Sans Khmer", "Noto Sans Thai", sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0e1312; --panel: #151b19; --ink: #e6ecea; --muted: #97a39f; --line: #25302c; --green: #5fd3ab; --pale: #16302a; --warn: #f0b85a; --warn-soft: #32270f; --bad: #ff7b6e; --bad-soft: #341815; color-scheme: dark; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.55 var(--sans); }
a { color: var(--green); }
h1, h2, h3 { letter-spacing: -0.02em; line-height: 1.15; }
[hidden] { display: none !important; }

.top { display: flex; align-items: center; gap: 8px 20px; flex-wrap: wrap; padding: 14px 20px; background: var(--panel); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--ink); text-decoration: none; font-size: 18px; }
.tag { margin: 0; color: var(--muted); font-size: 14px; flex: 1; min-width: 220px; }
.top nav a { font-size: 14px; text-decoration: none; }
.foot { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 6px 24px; padding: 18px 20px 28px; color: var(--muted); font-size: 13px; max-width: 1000px; margin: 0 auto; }

main { max-width: 1000px; margin: 0 auto; padding: 0 20px; }
.hero { padding: 36px 0 20px; max-width: 760px; }
.hero h1 { font-size: clamp(28px, 4.4vw, 44px); margin: 0 0 12px; }
.hl { color: var(--green); }
.lead { color: var(--muted); font-size: 17px; margin: 0; }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 18px; min-width: 0; }
.input { display: grid; gap: 10px; }
.buttons { display: flex; flex-wrap: wrap; gap: 10px; }
button { font: inherit; font-weight: 600; font-size: 15px; border-radius: 999px; border: 1px solid var(--green); background: var(--green); color: #fff; padding: 10px 18px; min-height: 44px; cursor: pointer; }
@media (prefers-color-scheme: dark) { button { color: #08120f; } }
button.ghost { background: transparent; color: var(--green); }
button.chip { font-size: 13px; padding: 5px 12px; min-height: 34px; background: transparent; color: var(--ink); border-color: var(--line); font-weight: 550; }
button:focus-visible, textarea:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }
.paste-label { font-size: 13.5px; color: var(--muted); font-weight: 600; }
textarea { font: 14px/1.5 var(--mono); color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; width: 100%; resize: vertical; overflow-wrap: anywhere; }
.examples { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font-size: 13px; color: var(--muted); }
.status { margin: 0; color: var(--muted); font-size: 14px; min-height: 1.4em; }
.camera { display: grid; gap: 10px; justify-items: start; }
.camera video { width: min(100%, 420px); aspect-ratio: 1; object-fit: cover; border-radius: 12px; background: #000; }

.result { display: grid; gap: 14px; margin-top: 18px; }
.result:empty { display: none; }
.verdict { padding: 14px 16px; border-radius: 12px; font-weight: 650; display: grid; gap: 2px; }
.verdict small { font-weight: 450; font-size: 14px; }
.verdict.ok { background: var(--pale); color: var(--green); }
.verdict.warn { background: var(--warn-soft); color: var(--warn); }
.verdict.bad { background: var(--bad-soft); color: var(--bad); }

h2.sec { font-size: 15px; margin: 6px 0 -4px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.payto { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px; }
.pay { border: 2px solid var(--green); border-radius: 14px; padding: 14px 16px; background: var(--panel); display: grid; gap: 4px; min-width: 0; }
.pay .net { font-size: 13px; font-weight: 700; color: var(--green); text-transform: uppercase; letter-spacing: 0.04em; }
.pay .kind { font-size: 13px; color: var(--muted); }
.pay .acct { font: 600 clamp(18px, 2.6vw, 24px)/1.25 var(--mono); overflow-wrap: anywhere; }
.pay .inst { font-size: 14px; }
.pay dl { margin: 6px 0 0; display: grid; grid-template-columns: auto 1fr; gap: 2px 10px; font-size: 13px; }
.pay dt { color: var(--muted); }
.pay dd { margin: 0; overflow-wrap: anywhere; }
.caution { margin: 0; padding: 12px 14px; border-left: 4px solid var(--warn); background: var(--panel); border-radius: 8px; font-size: 14.5px; }

.summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; }
.summary > div { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 10px 14px; display: grid; gap: 2px; min-width: 0; }
.summary .k { font-size: 12.5px; color: var(--muted); font-weight: 600; }
.summary .v { font-weight: 650; overflow-wrap: anywhere; }

.issues { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.issues li { padding: 10px 14px; border-radius: 10px; font-size: 14.5px; display: grid; gap: 2px; overflow-wrap: anywhere; }
.issues li.error { background: var(--bad-soft); }
.issues li.warning { background: var(--warn-soft); }
.issues .code { font: 600 12px var(--mono); color: var(--muted); }

.fields { width: 100%; border-collapse: collapse; font-size: 14px; background: var(--panel); border-radius: 12px; overflow: hidden; }
.fields th, .fields td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.fields th { font-size: 12.5px; color: var(--muted); }
.fields td.id { font-family: var(--mono); white-space: nowrap; color: var(--muted); }
.fields td.val { font-family: var(--mono); overflow-wrap: anywhere; word-break: break-word; }
.fields td.name { min-width: 140px; }
.fields .meaning { display: block; font-family: var(--sans); color: var(--muted); font-size: 13px; }
.fields tr.d1 td.name { padding-left: 22px; }
.fields tr.d2 td.name { padding-left: 36px; }
@media (max-width: 640px) {
  .fields thead { display: none; }
  .fields, .fields tbody, .fields tr, .fields td { display: block; width: 100%; }
  .fields tr { border-bottom: 1px solid var(--line); padding: 6px 0; }
  .fields td { border: 0; padding: 2px 12px; }
  .fields tr.d1 td, .fields tr.d2 td { padding-left: 28px; }
}

/* a value is isolated from the text around it; hidden characters are shown as markers */
.v, .acct, td.val, dd, .issues .msg { unicode-bidi: isolate; }
.hid { font: 600 11px var(--mono); color: #fff; background: var(--bad); border-radius: 4px; padding: 0 3px; margin: 0 1px; white-space: nowrap; }

.explain { padding: 28px 0 8px; }
.explain h2 { font-size: 24px; margin: 0 0 12px; }
.cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
@media (max-width: 800px) { .cols { grid-template-columns: 1fr; } }
.cols h3 { font-size: 17px; margin: 0 0 6px; }
.cols p, .small { color: var(--muted); margin: 0; font-size: 15px; }
.small { margin-top: 16px; font-size: 14px; }