:root {
  --bg: #f4f6fa;
  --card: #ffffff;
  --line: #e2e8f0;
  --text: #1e293b;
  --muted: #64748b;
  --brand: #1d4ed8;
  --brand-soft: #eff4ff;
  --ok: #15803d;
  --warn: #b45309;
  --err: #b91c1c;
  --radius: 10px;
}

* { box-sizing: border-box; }

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

/* ---------------- 顶栏 ---------------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 14px 24px;
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}

.brand { display: flex; align-items: center; gap: 14px; }

.logo {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 11px;
  background: linear-gradient(135deg, #1d4ed8, #0ea5e9);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .5px;
}

.topbar h1 { margin: 0; font-size: 17px; font-weight: 650; }
.topbar .sub { margin: 0; color: var(--muted); font-size: 12.5px; }
.topbar-right { display: flex; align-items: center; gap: 10px; }

.badge {
  padding: 5px 11px;
  border-radius: 999px;
  font-size: 12.5px;
  background: var(--brand-soft);
  color: var(--brand);
  border: 1px solid #d3e0ff;
  white-space: nowrap;
}
.badge.ok { background: #ecfdf5; color: var(--ok); border-color: #bbf7d0; }
.badge.err { background: #fef2f2; color: var(--err); border-color: #fecaca; }

/* ---------------- 页签 ---------------- */
.tabs {
  display: flex;
  gap: 4px;
  padding: 0 24px;
  background: #fff;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  position: sticky;
  top: 71px;
  z-index: 19;
}

.tab {
  border: 0;
  background: transparent;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  font-family: inherit;
}
.tab:hover { color: var(--brand); }
.tab.active { color: var(--brand); border-bottom-color: var(--brand); font-weight: 600; }

main { padding: 22px 24px 60px; max-width: 1560px; margin: 0 auto; }

/* ---------------- 卡片 ---------------- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 18px;
  box-shadow: 0 1px 2px rgba(15, 23, 42, .04);
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.card-head h2 { margin: 0; font-size: 15px; font-weight: 650; }
.card-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; align-items: start; }
@media (max-width: 1080px) { .grid2 { grid-template-columns: 1fr; } }

.chip {
  font-size: 12px;
  font-weight: 500;
  color: var(--brand);
  background: var(--brand-soft);
  border: 1px solid #d3e0ff;
  border-radius: 999px;
  padding: 2px 9px;
  margin-left: 6px;
}

/* ---------------- 表单 ---------------- */
.field { display: block; margin-bottom: 12px; }
.field > span { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 5px; }

input[type="text"], select, textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  font: inherit;
  color: var(--text);
  background: #fff;
}
input[type="text"]:focus, select:focus, textarea:focus {
  outline: none;
  border-color: #93b4fd;
  box-shadow: 0 0 0 3px rgba(29, 78, 216, .1);
}

textarea {
  min-height: 260px;
  font-family: ui-monospace, Consolas, "Courier New", monospace;
  font-size: 12.5px;
  line-height: 1.55;
  resize: vertical;
  white-space: pre;
  overflow: auto;
}
#epBody { min-height: 220px; }
#jsonOutput { min-height: 300px; }

.checks { display: grid; gap: 7px; margin: 10px 0 14px; }
.checks label { display: flex; align-items: center; gap: 8px; font-size: 13px; color: #334155; }

/* ---------------- 按钮 ---------------- */
.primary-btn {
  width: 100%;
  padding: 11px 16px;
  border: 0;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  font: 600 14px inherit;
  cursor: pointer;
  transition: background .15s;
}
.primary-btn:hover { background: #1a43bd; }
.primary-btn:disabled { background: #94a3b8; cursor: not-allowed; }

.mini-btn, .ghost-btn {
  padding: 6px 11px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  color: #334155;
  font: 13px inherit;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
.mini-btn:hover, .ghost-btn:hover { border-color: #93b4fd; color: var(--brand); }

.link-btn {
  border: 0;
  background: none;
  color: var(--brand);
  cursor: pointer;
  font: inherit;
  text-decoration: underline;
  padding: 0 2px;
}

/* ---------------- 拖拽区 ---------------- */
.drop {
  border: 1.5px dashed #c7d2e3;
  border-radius: 9px;
  background: #fafcff;
  padding: 14px;
  text-align: center;
  color: var(--muted);
  margin-bottom: 12px;
  transition: .15s;
}
.drop p { margin: 4px 0; font-size: 13px; }
.drop.big { padding: 30px 14px; }
.drop-icon { font-size: 30px; margin: 0 0 6px; }
.drop.over { border-color: var(--brand); background: var(--brand-soft); }

.row { display: flex; gap: 10px; align-items: center; margin-bottom: 10px; }
.row.spread { justify-content: space-between; }
.row.spread .primary-btn { width: auto; }
.hint { color: var(--muted); font-size: 12.5px; }

/* ---------------- 预览 / 报告 ---------------- */
.preview:empty { display: none; }
.preview {
  margin: 12px 0;
  padding: 12px 14px;
  border-radius: 8px;
  background: #f8fafc;
  border: 1px solid var(--line);
  font-size: 13px;
}
.preview h4 { margin: 0 0 8px; font-size: 13px; }
.preview ul { margin: 6px 0 0 18px; padding: 0; }
.preview li { margin: 3px 0; }
.preview .kv { display: flex; gap: 8px; flex-wrap: wrap; }
.preview .kv b { font-weight: 600; }
.kv-item { background: #fff; border: 1px solid var(--line); border-radius: 6px; padding: 3px 9px; font-size: 12.5px; }
.tag-ok { color: var(--ok); }
.tag-warn { color: var(--warn); }
.tag-err { color: var(--err); }

.code {
  background: #0f172a;
  color: #e2e8f0;
  border-radius: 8px;
  padding: 13px 15px;
  font: 12.5px/1.6 ui-monospace, Consolas, monospace;
  overflow: auto;
  max-height: 460px;
  white-space: pre-wrap;
  word-break: break-all;
}

/* ---------------- 表格 ---------------- */
.table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: 9px; max-height: 520px; }
.table-wrap.tall { max-height: 420px; }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
thead th {
  position: sticky;
  top: 0;
  background: #f1f5f9;
  text-align: left;
  padding: 9px 11px;
  font-weight: 600;
  font-size: 12.5px;
  color: #334155;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
  z-index: 1;
}
tbody td { padding: 8px 11px; border-bottom: 1px solid #f1f5f9; vertical-align: top; }
tbody tr:hover { background: #fafcff; }
tbody tr:last-child td { border-bottom: 0; }
td.mono, th.mono { font-family: ui-monospace, Consolas, monospace; font-size: 12.5px; }
.required-yes { color: var(--err); font-weight: 600; }
.required-no { color: var(--muted); }
.nowrap { white-space: nowrap; }

/* ---------------- 说明页 ---------------- */
.prose h2 { font-size: 15px; margin: 22px 0 10px; }
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { color: #334155; }
.prose ul, .prose ol { padding-left: 22px; }
.prose dl { margin: 0; }
.prose dt { font-weight: 600; margin-top: 10px; }
.prose dd { margin: 3px 0 0 0; color: var(--muted); }
.prose code, .hint code {
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  border-radius: 4px;
  padding: 1px 5px;
  font: 12.5px ui-monospace, Consolas, monospace;
}

/* ---------------- toast ---------------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 30px;
  transform: translate(-50%, 20px);
  background: #0f172a;
  color: #fff;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 13.5px;
  opacity: 0;
  pointer-events: none;
  transition: .22s;
  z-index: 50;
  max-width: 80vw;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.err { background: #b91c1c; }
.toast.ok { background: #15803d; }

.hidden { display: none !important; }