:root {
  --bg: #fff7ec;
  --card: #ffffff;
  --ink: #2b2b2b;
  --muted: #7a7266;
  --accent: #ff8a3d;
  --ok: #2fa66a;
  --bad: #e0533d;
  --mid: #8a8fa3;
  --line: #eadfce;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; background: var(--bg); color: var(--ink);
  font: 17px/1.5 -apple-system, "PingFang TC", "Noto Sans TC", sans-serif; }
main { max-width: 820px; margin: 0 auto; padding: env(safe-area-inset-top) 16px 40px; }
header { display: flex; align-items: center; gap: 12px; padding: 14px 0; }
header h1 { font-size: 22px; margin: 0; flex: 1; }
.ver { color: var(--muted); font-size: 13px; }
h2 { font-size: 17px; margin: 0 0 10px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 16px; margin: 12px 0; }
.stats div { margin: 2px 0; }
.row { display: flex; gap: 10px; align-items: center; margin: 8px 0; }
.wrap { flex-wrap: wrap; }
.center { justify-content: center; text-align: center; }
.muted { color: var(--muted); font-size: 14px; }
.warn { background: #fff0d6; border: 1px solid #f3c77a; border-radius: 12px; padding: 10px 14px; margin: 10px 0; }
button { font: inherit; border: 1px solid var(--line); background: #fff; border-radius: 12px; padding: 10px 16px; color: var(--ink); }
button:disabled { opacity: .4; }
button.primary { background: var(--accent); color: #fff; border-color: var(--accent); font-weight: 600; }
button.huge { font-size: 22px; padding: 16px 28px; }
.back { padding: 6px 12px; }
.chip.on { background: var(--ink); color: #fff; border-color: var(--ink); }
input, select { font: inherit; padding: 9px 12px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
label.check { display: block; padding: 6px 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin: 12px 0; }
.grid .big { padding: 22px 12px; font-size: 19px; border-radius: 16px; }
.flash { background: var(--card); border-radius: 24px; border: 1px solid var(--line); text-align: center; padding: 24px 16px; margin: 8px 0 16px; }
.emoji { font-size: 160px; line-height: 1.1; }
.emoji.small { font-size: 90px; }
.word { font-size: 44px; font-weight: 700; letter-spacing: 1px; }
.target { font-size: 20px; margin: 8px 0 14px; }
.meter { height: 10px; background: #f1e8da; border-radius: 6px; overflow: hidden; margin: 14px auto; max-width: 420px; }
.meter > div { height: 100%; width: 0; background: var(--accent); transition: width .05s linear; }
.labels { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 10px; }
.lab { padding: 20px 8px; font-size: 20px; font-weight: 600; border-radius: 16px; color: #fff; border: 0; }
.lab.ok { background: var(--ok); }
.lab.bad { background: var(--bad); }
.lab.mid { background: var(--mid); }
pre { white-space: pre-wrap; word-break: break-all; font-size: 13px; background: #faf6ef; padding: 12px; border-radius: 10px; }