:root {
  --bg: #ffffff; --fg: #1a1c1f; --muted: #5b6370; --line: #e2e5ea;
  --card: #f7f8fa; --accent: #1f5fd6; --accent-fg: #ffffff;
  --warn-bg: #fff6e5; --warn-line: #e6a23c; --warn-fg: #6b4a08;
  --ok-bg: #eaf7ee; --ok-line: #3fa45f; --ok-fg: #1c5c31;
  --radius: 8px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a; --fg: #e6e8ec; --muted: #9aa3b0; --line: #2a2f37;
    --card: #1b1e24; --accent: #4c8dff; --accent-fg: #0b0d10;
    --warn-bg: #2e2413; --warn-line: #b8860b; --warn-fg: #f0d9a8;
    --ok-bg: #16281c; --ok-line: #3fa45f; --ok-fg: #a9e0bb;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
.wrap { max-width: 820px; margin: 0 auto; padding: 32px 16px 80px; }
header.site { border-bottom: 1px solid var(--line); padding-bottom: 16px; margin-bottom: 28px; }
/* Two files, not one recoloured by CSS: the wordmark is near-white for
   dark backgrounds and near-black for light ones, and a filter cannot
   flip the text without also flipping the orange mark. */
header.site .logo { display: block; height: 34px; width: auto; }
header.site .logo-dark { display: none; }
@media (prefers-color-scheme: dark) {
  header.site .logo-light { display: none; }
  header.site .logo-dark { display: block; }
}
header.site .sub { color: var(--muted); font-size: 14px; }
h1 { font-size: 26px; line-height: 1.25; margin: 0 0 8px; }
h2 { font-size: 19px; margin: 32px 0 8px; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.notice { border-left: 4px solid var(--warn-line); background: var(--warn-bg); color: var(--warn-fg);
          padding: 14px 16px; border-radius: var(--radius); margin: 20px 0; }
.ok { border-left: 4px solid var(--ok-line); background: var(--ok-bg); color: var(--ok-fg);
      padding: 14px 16px; border-radius: var(--radius); margin: 20px 0; }
.doc { border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 24px;
       max-height: 460px; overflow-y: auto; background: var(--bg); font-size: 15px; }
.doc ol { padding-left: 22px; }
.doc li { margin-bottom: 10px; }
fieldset { border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; margin: 20px 0; }
legend { font-weight: 600; padding: 0 6px; }
label { display: block; margin: 12px 0 4px; font-weight: 500; font-size: 14px; }
input[type=text], input[type=email], input[type=tel], select, textarea {
  width: 100%; padding: 9px 11px; font-size: 15px; color: var(--fg);
  background: var(--bg); border: 1px solid var(--line); border-radius: 6px;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.radio-row { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 8px; }
.radio-row label { display: flex; align-items: center; gap: 8px; font-weight: 500; margin: 0; }
button {
  background: var(--accent); color: var(--accent-fg); border: 0; border-radius: 6px;
  padding: 11px 20px; font-size: 15px; font-weight: 600; cursor: pointer;
}
button:disabled { opacity: .5; cursor: not-allowed; }
button.secondary { background: transparent; color: var(--fg); border: 1px solid var(--line); }
.who { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.who img { border-radius: 50%; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.tag { display: inline-block; font-size: 12px; padding: 2px 8px; border-radius: 999px;
       border: 1px solid var(--line); color: var(--muted); }
.req::after { content: " *"; color: var(--warn-line); }

/* ── signature block ─────────────────────────────────────────────────── */
.sigblock {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--card); margin: 28px 0; overflow: hidden;
}
.sigblock > .hd {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap;
  padding: 12px 18px; background: var(--accent); color: var(--accent-fg);
  font-size: 13px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase;
}
.sigblock > .hd .ref { font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
                       text-transform: none; letter-spacing: 0; opacity: .85; font-weight: 500; }
.sigblock > .bd { padding: 20px 22px; }
.sig-grid { display: grid; grid-template-columns: 1fr 200px; gap: 22px; }
@media (max-width: 620px) { .sig-grid { grid-template-columns: 1fr; } }
.sig-field .cap {
  font-size: 11px; font-weight: 700; letter-spacing: .09em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 6px;
}
.sig-well {
  border: 1px dashed var(--line); border-radius: 6px; background: var(--bg);
  min-height: 74px; display: flex; align-items: center; padding: 6px 14px;
}
.sig-rendered {
  font-family: "Segoe Script", "Bradley Hand", "Brush Script MT", "Snell Roundhand",
               "Apple Chancery", cursive;
  font-size: 34px; line-height: 1.15; color: var(--fg);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; width: 100%;
}
.sig-rendered.empty { color: var(--muted); opacity: .45; font-size: 20px; }
.sig-date {
  border: 1px solid var(--line); border-radius: 6px; background: var(--bg);
  min-height: 74px; display: flex; align-items: center; padding: 6px 14px;
  font-size: 17px; font-weight: 500;
}
.sig-rule { border: 0; border-top: 1px solid var(--line); margin: 6px 0 8px; }
.sig-meta { font-size: 12px; color: var(--muted); }
.sig-who {
  display: flex; align-items: center; gap: 10px; margin-top: 18px;
  padding-top: 16px; border-top: 1px solid var(--line); font-size: 13px;
}
.sig-who img { border-radius: 50%; flex-shrink: 0; }
.sig-badge {
  display: inline-flex; align-items: center; gap: 5px; font-weight: 600;
  color: var(--ok-line);
}
.sigblock > .ft {
  padding: 11px 18px; border-top: 1px solid var(--line);
  background: var(--bg); font-size: 11.5px; color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  word-break: break-all;
}
footer.site { margin-top: 48px; border-top: 1px solid var(--line); padding-top: 16px;
              color: var(--muted); font-size: 13px; }