:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --ink: #1f2430;
  --muted: #6b7280;
  --line: #e6e8ef;
  --brand: #ff5a2c;
  --brand2: #ff8a3d;
  --ok: #16a34a;
  --warn: #f59e0b;
  --danger: #e11d48;
  --shadow: 0 6px 24px rgba(30, 40, 70, .08);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
}

/* 顶栏 */
.topbar {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  padding: 14px 22px;
  background: linear-gradient(120deg, #fff 0%, #fff6f1 100%);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo { font-size: 30px; }
.topbar h1 { margin: 0; font-size: 20px; letter-spacing: .5px; }
.tag { margin: 0; font-size: 12px; color: var(--muted); }

.tabs { display: flex; gap: 6px; margin-left: auto; flex-wrap: wrap; }
.tab {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 14px;
  transition: .15s;
}
.tab:hover { border-color: var(--brand); color: var(--brand); }
.tab.active { background: var(--brand); color: #fff; border-color: var(--brand); }
.lock { font-size: 11px; }

.support {
  text-decoration: none;
  background: #fff;
  border: 1px solid var(--brand);
  color: var(--brand);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}
.support:hover { background: var(--brand); color: #fff; }

/* 容器 */
.container { max-width: 920px; margin: 22px auto; padding: 0 18px; }
.panel { display: none; background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 22px; box-shadow: var(--shadow); }
.panel.active { display: block; }
.panel h2 { margin: 0 0 4px; font-size: 18px; }
.hint { color: var(--muted); font-size: 13px; margin: 0 0 14px; }

/* 输入 */
textarea, input, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 12px;
  font-size: 14px;
  font-family: inherit;
  background: #fbfcfe;
  color: var(--ink);
}
textarea { min-height: 130px; resize: vertical; }
textarea:focus, input:focus, select:focus { outline: none; border-color: var(--brand); background: #fff; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 14px; }
.grid2 label { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--muted); }

.row { display: flex; align-items: center; gap: 10px; margin: 12px 0; flex-wrap: wrap; }
.btn {
  border: none;
  border-radius: 10px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: .15s;
}
.btn.primary { background: var(--brand); color: #fff; }
.btn.primary:hover { background: #ec4a1d; }
.btn.ghost { background: #fff; border: 1px solid var(--line); color: var(--muted); }
.btn.ghost:hover { border-color: var(--brand); color: var(--brand); }
.counter { color: var(--muted); font-size: 13px; }

/* 结果卡片 */
#detectResult, #titleResult, #copyResult, #bulkResult { margin-top: 8px; }
.summary { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.chip { padding: 6px 12px; border-radius: 999px; font-size: 13px; font-weight: 600; }
.chip.safe { background: #e7f7ec; color: var(--ok); }
.chip.risk { background: #fdeaef; color: var(--danger); }
.chip.warn { background: #fef3e2; color: var(--warn); }

.highlight { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 12px; white-space: pre-wrap; word-break: break-word; }
.highlight mark { background: #ffd9e1; color: #b00030; padding: 0 2px; border-radius: 3px; }

.issue {
  border: 1px solid var(--line);
  border-left: 4px solid var(--danger);
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 8px;
  background: #fff;
}
.issue.mid { border-left-color: var(--warn); }
.issue .word { font-weight: 700; }
.issue .meta { font-size: 12px; color: var(--muted); margin-left: 8px; }
.issue .tip { font-size: 13px; margin-top: 3px; }

.title-card { border: 1px solid var(--line); border-radius: 10px; padding: 12px; margin-bottom: 10px; background: #fff; }
.title-card .t { font-size: 15px; font-weight: 600; }
.title-card .info { font-size: 12px; color: var(--muted); margin-top: 4px; }
.title-card .info .bad { color: var(--danger); }
.title-card .info .good { color: var(--ok); }
.title-card .copybtn { float: right; font-size: 12px; color: var(--brand); cursor: pointer; border: 1px solid var(--line); padding: 3px 10px; border-radius: 8px; }
.title-card .copybtn:hover { border-color: var(--brand); }

.block { margin-bottom: 16px; }
.block h3 { font-size: 15px; margin: 0 0 8px; color: var(--brand); }
.line { background: #fbfcfe; border: 1px solid var(--line); border-radius: 8px; padding: 9px 12px; margin-bottom: 6px; font-size: 14px; }

.locked { text-align: center; padding: 20px; }
.locked input { max-width: 260px; display: inline-block; }
.support2 { display: inline-block; margin-top: 10px; text-decoration: none; }
.empty { color: var(--muted); font-size: 14px; padding: 10px 0; }

.footer { text-align: center; color: var(--muted); font-size: 12px; padding: 24px 18px 40px; }

@media (max-width: 640px) {
  .grid2 { grid-template-columns: 1fr; }
  .tabs { width: 100%; margin-left: 0; }
  .support { margin-left: auto; }
}

/* 付费 / 收款区 */
.price { font-size: 15px; margin: 12px 0; }
.price b { color: var(--brand); font-size: 19px; }
.pay-box { display: flex; gap: 22px; flex-wrap: wrap; align-items: flex-start; justify-content: center; margin: 14px 0 4px; }
.qr-wrap { text-align: center; }
#payQr { width: 180px; height: 180px; border: 1px solid var(--line); border-radius: 10px; background: #fafafa; object-fit: contain; }
.pay-actions { display: flex; flex-direction: column; gap: 12px; justify-content: center; padding-top: 10px; max-width: 240px; text-align: left; }
.pay-actions .hint { margin: 0; }

/* 购买 / 生成专属码 */
.buy-step { margin: 16px 0; }
.mycode {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 22px; font-weight: 700; letter-spacing: 3px;
  color: var(--brand); background: #fff5f0; border: 1px dashed var(--brand);
  border-radius: 10px; padding: 10px 16px; display: inline-block;
}