:root {
  --bg: #f4f1ea;
  --card: #fffaf1;
  --ink: #1f1a14;
  --muted: #6b6258;
  --line: #e4d8c4;
  --accent: #c45c26;
  --ok: #2f7d4a;
  --bad: #b42318;
  --key: #2b2b2b;
  --key2: #3d4f6f;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--ink); font-family: "PingFang SC", "Noto Sans SC", sans-serif; }
#app { max-width: 720px; margin: 0 auto; min-height: 100vh; padding: 16px 16px 28px; }
h1 { font-size: 22px; margin: 0 0 12px; }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px; margin-bottom: 12px; }
.btn, button {
  border: 0; border-radius: 10px; padding: 10px 14px; background: var(--accent); color: #fff; font-weight: 700; cursor: pointer;
}
.btn.ghost, button.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn.on { outline: 2px solid var(--ink); }
input {
  width: 100%; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line); font-size: 16px; margin: 6px 0 10px;
}
.mods { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.mods button { width: 100%; text-align: left; background: #2f2a26; }
.prompt { font-size: 42px; text-align: center; margin: 18px 0 8px; letter-spacing: .08em; min-height: 56px; }
.code { text-align: center; color: var(--accent); font-size: 22px; letter-spacing: .2em; min-height: 28px; font-weight: 700; }
.typed { text-align: center; font-size: 20px; letter-spacing: .18em; min-height: 28px; }
.meta { color: var(--muted); font-size: 13px; text-align: center; margin-top: 6px; }
.kb { margin-top: 12px; user-select: none; display: flex; flex-direction: column; gap: 4px; }
.kb .kb-row { display: flex; gap: 4px; }
.kb b {
  flex: 1; display: flex; align-items: center; justify-content: center; height: 42px; border-radius: 8px;
  background: var(--key); color: #fff; font-size: 14px; cursor: pointer;
}
.kb b.zone2 { background: var(--key2); }
.kb b.wide { flex: 2.2; background: var(--accent); }
.list { max-height: 56vh; overflow: auto; }
.item { display: flex; justify-content: space-between; gap: 8px; padding: 8px 0; border-bottom: 1px solid var(--line); }
.err { color: var(--bad); min-height: 20px; font-size: 13px; }
.ok { color: var(--ok); }
.hidden { display: none !important; }
.sw { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0; }
.sw label { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); }
.title { font-size: 14px; color: var(--muted); text-align: center; }
.lookup input { margin-top: 0; }