:root {
  --bg: #14161a;
  --card: #1c1f26;
  --card-2: #22262f;
  --line: #2c313c;
  --text: #d8dde5;
  --dim: #8b93a1;
  --accent: #3ddc97;
  --accent-dim: #2aa876;
  --bad: #ff6b6b;
  --warn: #ffb454;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, "Liberation Mono", monospace;
}

[v-cloak] { display: none; }

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 40px 20px 64px;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.6 -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 660px; margin: 0 auto; }

header { margin-bottom: 26px; }

h1 {
  margin: 0 0 6px;
  font-size: 21px;
  font-weight: 600;
  letter-spacing: .2px;
}

.sub { margin: 0 0 14px; color: var(--dim); font-size: 13px; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  color: var(--dim);
}

.badge i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--dim);
}

.badge.ok i { background: var(--accent); box-shadow: 0 0 8px var(--accent-dim); }
.badge.bad i { background: var(--bad); }
.badge.bad { color: var(--bad); border-color: #4a2b2b; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 16px;
}

.step {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
}

.num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  color: #10261c;
  font-size: 12px;
  font-weight: 700;
}

.hint { margin: 0 0 12px; color: var(--dim); font-size: 12.5px; }

code, .mono { font-family: var(--mono); }

.hint code {
  background: var(--card-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 12px;
  color: var(--text);
}

textarea {
  width: 100%;
  resize: vertical;
  padding: 11px 12px;
  background: #12141a;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 7px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.5;
  word-break: break-all;
  outline: none;
}

textarea:focus { border-color: var(--accent-dim); }

textarea::placeholder { color: #4d5563; }

.actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 13px;
  flex-wrap: wrap;
}

button {
  padding: 8px 17px;
  border-radius: 7px;
  border: 1px solid transparent;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, border-color .15s, opacity .15s;
}

button:disabled { opacity: .45; cursor: not-allowed; }

.primary { background: var(--accent); color: #10261c; }
.primary:not(:disabled):hover { background: #4de8a6; }

.ghost {
  background: transparent;
  color: var(--dim);
  border-color: var(--line);
}

.ghost:not(:disabled):hover { color: var(--text); border-color: #3d4450; }

.err { color: var(--bad); font-size: 12.5px; }

.code-box {
  padding: 13px 14px;
  background: #12141a;
  border: 1px solid var(--accent-dim);
  border-radius: 7px;
  font-size: 12.5px;
  line-height: 1.55;
  word-break: break-all;
  user-select: all;
  color: #b9f5d8;
}

.code-box.dead {
  border-color: #4a2b2b;
  color: var(--dim);
  text-decoration: line-through;
}

.timer {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  margin-left: auto;
}

.timer.dead { color: var(--bad); }

footer {
  margin-top: 26px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--dim);
  font-size: 12px;
}

footer p { margin: 0 0 5px; }

.fp { font-size: 11px; color: #5c6472; letter-spacing: .3px; }