:root { --bg: #fafafa; --surface: #fff; --ink: #111; --muted: #666; --line: #d9d9d9; --blue: #1f4fd8; --ok: #17643a; --bad: #a1271c; --tag: #fbefc5; --tagline: #ecd893; --tagink: #6b4e00; }
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.55 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
h1, h2, h3 { font-family: Georgia, "Times New Roman", serif; line-height: 1.2; margin: 0; }
a { color: var(--blue); }
.muted { color: var(--muted); } .small { font-size: 14px; } .ok { color: var(--ok); } .bad { color: var(--bad); }
[hidden] { display: none !important; }
code, pre { font: 13px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; }
pre { background: #f3f3f3; border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; overflow: auto; margin: 8px 0 0; white-space: pre-wrap; word-break: break-word; }

.demobar { background: var(--tag); border-bottom: 1px solid var(--tagline); color: var(--tagink); font-size: 14px; padding: 8px 16px; text-align: center; }
.demobar b { letter-spacing: .04em; text-transform: uppercase; font-size: 12px; }
header.site { display: flex; align-items: center; gap: 16px; padding: 14px 20px; border-bottom: 1px solid var(--line); background: var(--surface); flex-wrap: wrap; }
header.site .brand { font: 700 20px Georgia, serif; }
header.site nav { display: flex; gap: 16px; font-size: 15px; color: var(--muted); flex-wrap: wrap; }
header.site .who { margin-left: auto; font-size: 14px; color: var(--muted); }

main { max-width: 1120px; margin: 0 auto; padding: 28px 16px 72px; }
.cols { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr); gap: 22px; align-items: start; }
@media (max-width: 900px) { .cols { grid-template-columns: minmax(0, 1fr); } }
h1 { font-size: clamp(28px, 5vw, 38px); margin: 6px 0 10px; }
h2 { font-size: 21px; margin: 0 0 10px; }
h3 { font-size: 16px; margin: 0 0 6px; }
.chip { display: inline-block; font: 700 11px/1 -apple-system, "Segoe UI", sans-serif; letter-spacing: .07em; text-transform: uppercase; border: 1px solid var(--line); border-radius: 999px; padding: 5px 9px; color: var(--muted); background: var(--surface); vertical-align: middle; }
.chip.on { color: #fff; background: var(--blue); border-color: var(--blue); }
.card { background: var(--surface); border: 1px dashed #bbb; border-radius: 12px; padding: 16px 18px; min-width: 0; margin: 0 0 18px; }
.card.solid { border-style: solid; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
button, .btn { font: 600 15px/1 -apple-system, "Segoe UI", sans-serif; border-radius: 8px; border: 1px solid var(--ink); background: var(--ink); color: #fff; padding: 11px 16px; cursor: pointer; text-decoration: none; display: inline-block; }
button.ghost, .btn.ghost { background: var(--surface); color: var(--ink); }
button.link { background: none; border: 0; color: var(--blue); padding: 4px 0; font-weight: 500; text-decoration: underline; }
button.hplus { background: var(--blue); border-color: var(--blue); font-size: 16px; padding: 13px 20px; }
button:disabled { opacity: .5; cursor: default; }
button:focus-visible, a:focus-visible, textarea:focus-visible { outline: 3px solid #8fb0ff; outline-offset: 2px; }
textarea { width: 100%; min-height: 220px; font: 16px/1.55 -apple-system, "Segoe UI", sans-serif; border: 1px solid #bbb; border-radius: 10px; padding: 12px 14px; resize: vertical; background: var(--surface); color: var(--ink); }
.hpcard { border: 1px solid #c9d6fb; background: #f3f6ff; border-radius: 12px; padding: 14px 16px; margin: 14px 0 0; display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.hpcard p { margin: 0; flex: 1 1 260px; font-size: 15px; }
#boxWrap { min-height: 120px; }
.under { margin: 12px 0 0; }
ul.log { list-style: none; margin: 0; padding: 0; max-height: 420px; overflow: auto; }
ul.log li { border-top: 1px solid #eee; padding: 8px 0; font-size: 14px; word-break: break-word; }
ul.log li:first-child { border-top: 0; }
table.kv { border-collapse: collapse; width: 100%; font-size: 14px; }
table.kv td { border-top: 1px solid #eee; padding: 7px 0; vertical-align: top; }
table.kv td:first-child { color: var(--muted); padding-right: 12px; width: 44%; }
.signedtext { white-space: pre-wrap; border-left: 3px solid var(--blue); padding: 2px 0 2px 14px; margin: 10px 0; }

/* review pane */
body.pane { height: 100vh; display: flex; flex-direction: column; }
.panebar { display: flex; gap: 14px; align-items: center; padding: 10px 16px; background: #10244f; color: #fff; flex-wrap: wrap; font-size: 14px; }
.panebar .brand { font: 700 17px Georgia, serif; }
.panebar .ctx { opacity: .85; }
.panebar button { margin-left: auto; background: #fff; color: #10244f; border-color: #fff; padding: 8px 12px; font-size: 14px; }
.split { flex: 1; min-height: 0; display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); }
.split > section { min-width: 0; min-height: 0; display: flex; flex-direction: column; }
.pdfpane { border-right: 1px solid var(--line); background: #e9e9e9; }
.pdfhead { background: var(--surface); border-bottom: 1px solid var(--line); padding: 10px 14px; }
.pdfhead h2 { font-size: 16px; margin: 0 0 2px; }
#pdfFrame { flex: 1; width: 100%; border: 0; min-height: 0; }
#pdfEmpty { margin: auto; padding: 24px; max-width: 46ch; text-align: center; color: var(--muted); }
.writepane { overflow: auto; padding: 16px; background: var(--bg); }
@media (max-width: 900px) { body.pane { height: auto; } .split { grid-template-columns: minmax(0, 1fr); } .pdfpane { height: 62vh; border-right: 0; border-bottom: 1px solid var(--line); } }