:root {
  color-scheme: light;
  --bg: #f6f7f6;
  --ink: #1c2128;
  --muted: #3d454d;
  --line: #d5dbd6;
  --paper: #ffffff;
  --green: #149144;
  --ink-dark: #1c2128;
  --call: #c62828;
  --danger-bg: #fff4f2;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 18px;
  line-height: 1.4;
}
body[data-mode="grace"],
body[data-mode="help_grace"] { background: var(--danger-bg); }
.shell {
  max-width: 440px;
  margin: 0 auto;
  min-height: 100dvh;
  padding: max(20px, env(safe-area-inset-top)) 18px max(32px, env(safe-area-inset-bottom));
}
.mast { display: block; text-decoration: none; margin: 0 0 8px; }
.logo { display: block; width: min(100%, 280px); height: auto; margin: 0 auto; background: #fff; }
.brand { margin: 0 0 12px; font-size: 15px; color: var(--ink); font-weight: 650; }
h1 { font-size: 40px; line-height: 1.05; margin: 0 0 12px; font-weight: 650; }
.lede, p { margin: 0 0 16px; }
.fine, .label { color: var(--muted); font-size: 15px; }
.eyebrow { color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; font-size: 13px; }
button, .btn, input, textarea {
  font: inherit;
  color: inherit;
}
button, .btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 64px;
  margin: 0 0 12px;
  padding: 14px 16px;
  border-radius: 16px;
  border: 0;
  text-decoration: none;
  text-align: center;
  touch-action: manipulation;
}
.btn-primary { background: var(--green); color: #fff; min-height: 84px; font-size: 22px; font-weight: 700; }
.btn-ghost { background: var(--paper); color: var(--ink); border: 1px solid var(--line); }
.btn-text { background: transparent; color: var(--ink); min-height: 64px; }
.btn-call { background: var(--call); color: white; min-height: 96px; font-size: 24px; font-weight: 750; }
.btn-call-small { background: var(--paper); color: var(--call); border: 1px solid var(--call); min-height: 56px; font-size: 16px; }
input, textarea {
  width: 100%;
  margin-top: 6px;
  padding: 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  font-size: 18px;
}
label { display: block; margin: 0 0 14px; }
.check { display: flex; gap: 10px; align-items: flex-start; }
.check input { width: auto; margin-top: 4px; }
.preview {
  white-space: pre-wrap;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  font-size: 15px;
  color: var(--ink);
}
.error { color: #9f1d1d; margin: 0 0 12px; }
.error:empty { display: none; }
.choices { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 12px; }
.choices button { min-height: 56px; margin: 0; background: var(--paper); color: var(--ink); border: 1px solid var(--line); border-radius: 12px; }
.choices button.selected { background: var(--green); color: #fff; border-color: var(--green); }
.mint { word-break: break-all; font-family: ui-monospace, Consolas, monospace; font-size: 14px; }
h2 { font-size: 22px; margin: 8px 0 12px; }
ul { margin: 0 0 16px; padding-left: 1.2em; }
.countdown {
  font-size: 72px;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.04em;
  margin: 4px 0 16px;
}
.guide { padding-bottom: 48px; }
.guide ol { padding-left: 1.2em; }
.guide li { margin: 0 0 8px; }
:focus-visible { outline: 3px solid var(--green); outline-offset: 3px; }
a { color: #0f7a38; }
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto; } }