:root {
  --blue: #1f6feb;
  --blue-dark: #0b4fc4;
  --bg: #f4f8ff;
  --card: #ffffff;
  --text: #1f2933;
  --muted: #6b7280;
  --border: #dbe7fb;
  --ok: #16a34a;
  --warn: #d97706;
  --danger: #dc2626;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px; background: linear-gradient(120deg, var(--blue), #3b9bff);
  color: #fff; flex-wrap: wrap; gap: 10px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand .logo { font-size: 28px; }
.brand h1 { margin: 0; font-size: 20px; }
.brand .sub { margin: 0; font-size: 12px; opacity: .9; }
.top-actions { display: flex; align-items: center; gap: 12px; }
.help-count { font-size: 13px; background: rgba(255,255,255,.18); padding: 4px 10px; border-radius: 20px; }
.btn {
  border: none; border-radius: 8px; padding: 8px 14px; font-size: 14px;
  cursor: pointer; background: #eaf1ff; color: var(--blue-dark); transition: .15s;
}
.btn:hover { filter: brightness(.96); }
.btn.primary { background: var(--blue); color: #fff; }
.btn.ghost { background: rgba(255,255,255,.2); color: #fff; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.tabs { display: flex; gap: 6px; padding: 10px 14px 0; flex-wrap: wrap; background: #fff; border-bottom: 1px solid var(--border); }
.tab { border: none; background: transparent; padding: 10px 14px; font-size: 14px; cursor: pointer; color: var(--muted); border-bottom: 3px solid transparent; }
.tab.active { color: var(--blue); border-bottom-color: var(--blue); font-weight: 600; }

main { max-width: 960px; margin: 0 auto; padding: 18px 14px 40px; }
.panel { display: none; }
.panel.active { display: block; }
h2 { font-size: 18px; margin: 6px 0 4px; }
.hint { color: var(--muted); font-size: 13px; margin: 0 0 14px; }

.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px; box-shadow: 0 2px 8px rgba(31,111,235,.05); }
form label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 12px; }
form input, form select, form textarea {
  width: 100%; margin-top: 5px; padding: 9px 11px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 14px; font-family: inherit; background: #fff; color: var(--text);
}
form textarea { resize: vertical; }
.row { display: flex; gap: 10px; align-items: flex-end; }
.row input { flex: 1; }
.msg { font-size: 13px; min-height: 18px; margin: 10px 0 0; }
.msg.ok { color: var(--ok); }
.msg.err { color: var(--danger); }

/* 统计卡 */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 16px; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 12px; text-align: center; }
.stat .num { font-size: 22px; font-weight: 700; color: var(--blue); }
.stat .lbl { font-size: 12px; color: var(--muted); }
.lock { display: flex; align-items: center; justify-content: center; flex-direction: column; gap: 6px; color: var(--muted); cursor: pointer; }
.lock:hover { color: var(--blue); }

/* 条形图 */
.bar-row { display: flex; align-items: center; gap: 8px; margin: 6px 0; font-size: 13px; }
.bar-row .name { width: 70px; color: var(--muted); }
.bar-track { flex: 1; background: #eef3ff; border-radius: 6px; height: 14px; overflow: hidden; }
.bar-fill { height: 100%; background: var(--blue); border-radius: 6px; }
.bar-row .val { width: 30px; text-align: right; }

table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 8px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }
.sev { padding: 2px 8px; border-radius: 10px; font-size: 12px; }
.sev.high { background: #fee2e2; color: var(--danger); }
.sev.mid { background: #fef3c7; color: var(--warn); }
.sev.low { background: #e0f2fe; color: #0369a1; }

/* 检索结果 */
.block { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px; margin-top: 14px; }
.block h3 { margin: 0 0 8px; font-size: 15px; }
.kv { display: grid; grid-template-columns: 110px 1fr; gap: 4px 10px; font-size: 13px; }
.kv .k { color: var(--muted); }
.suggestion { background: #fff7ed; border: 1px solid #fed7aa; color: #9a3412; padding: 10px 12px; border-radius: 8px; font-size: 13px; margin-top: 8px; }
.dnsbl-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.dnsbl-tag { background: #fee2e2; color: var(--danger); padding: 3px 8px; border-radius: 6px; font-size: 12px; }
.dnsbl-clean { color: var(--ok); font-size: 13px; }
.ext-links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.ext-links a { font-size: 12px; background: #eaf1ff; color: var(--blue-dark); padding: 5px 10px; border-radius: 6px; text-decoration: none; }
.ext-links a:hover { background: #dbe7fb; }

/* 榜单 */
.rank-row { display: flex; align-items: center; gap: 10px; padding: 8px 4px; border-bottom: 1px solid var(--border); font-size: 14px; }
.rank-row .no { width: 26px; font-weight: 700; color: var(--muted); }
.rank-row .nm { flex: 1; }
.rank-row .bd { font-size: 12px; color: var(--blue); }
.rank-row .pt { font-weight: 700; color: var(--blue); }
.me { background: #eff6ff; border-radius: 8px; }

/* 弹窗 */
.modal { position: fixed; inset: 0; background: rgba(15,23,42,.5); display: flex; align-items: center; justify-content: center; padding: 16px; z-index: 50; }
.modal.hidden { display: none; }
.modal-box { width: 100%; max-width: 360px; position: relative; }
.modal-box .close { position: absolute; right: 10px; top: 8px; border: none; background: transparent; font-size: 22px; cursor: pointer; color: var(--muted); }
.modal-btns { display: flex; gap: 10px; margin-top: 6px; }

.toast { position: fixed; left: 50%; bottom: 30px; transform: translateX(-50%); background: #111827; color: #fff; padding: 10px 18px; border-radius: 10px; font-size: 14px; z-index: 60; box-shadow: 0 6px 20px rgba(0,0,0,.25); }
.toast.hidden { display: none; }
.foot { text-align: center; color: var(--muted); font-size: 12px; padding: 20px; }

/* 响应式：手机 */
@media (max-width: 640px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .topbar { padding: 10px 12px; }
  .brand h1 { font-size: 17px; }
  .help-count { display: none; }
  .row { flex-direction: column; align-items: stretch; }
  .row input { width: 100%; }
  .kv { grid-template-columns: 90px 1fr; }
  table { display: block; overflow-x: auto; white-space: nowrap; }
}