:root {
  --blue: #2456a6; --blue-dark: #17335f; --bg: #f2f4f8;
  --card: #ffffff; --line: #dde3ec; --text: #1f2937; --muted: #6b7280;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg); color: var(--text);
}
header {
  background: linear-gradient(135deg, var(--blue-dark), var(--blue));
  color: #fff; padding: 28px 20px; text-align: center;
}
header h1 { margin: 0 0 6px; font-size: 26px; }
header p { margin: 0; opacity: .85; font-size: 14px; }
main { max-width: 1080px; margin: 24px auto; padding: 0 16px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 24px; margin-bottom: 20px; box-shadow: 0 1px 3px rgba(16,24,40,.06);
}
#dropzone {
  border: 2px dashed #b6c3d9; border-radius: 10px; padding: 44px 20px;
  text-align: center; color: var(--muted); cursor: pointer; transition: .15s;
}
#dropzone.drag, #dropzone:hover { border-color: var(--blue); background: #f5f8ff; }
.dz-icon { font-size: 34px; margin-bottom: 8px; }
#dropzone .link { color: var(--blue); text-decoration: underline; }
.demo-row { margin-top: 16px; display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.demo-label { color: var(--muted); font-size: 14px; }
#demo-buttons { display: flex; flex-wrap: wrap; gap: 8px; }
.demo-btn {
  border: 1px solid var(--blue); color: var(--blue); background: #fff;
  border-radius: 16px; padding: 6px 14px; font-size: 13px; cursor: pointer;
}
.demo-btn:hover { background: var(--blue); color: #fff; }
.hint { color: var(--muted); font-size: 13px; margin: 14px 0 0; }
.error { color: #b42318; background: #fef3f2; border: 1px solid #fecdca;
  border-radius: 8px; padding: 10px 12px; font-size: 14px; }
.progress-head {
  display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 16px;
}
#job-title { font-weight: 600; }
#timer { color: var(--muted); font-size: 14px; }
#stepper { list-style: none; display: flex; gap: 6px; padding: 0; margin: 0 0 16px; }
#stepper li {
  flex: 1; text-align: center; font-size: 13px; color: var(--muted);
  border: 1px solid var(--line); border-radius: 18px; padding: 7px 4px; position: relative;
}
#stepper li.active { border-color: var(--blue); color: var(--blue); font-weight: 600;
  background: #eef4ff; }
#stepper li.done { border-color: #a7d0a7; color: #2f7a3d; background: #f2fbf3; }
#stepper li.failed { border-color: #e3a6a2; color: #b42318; background: #fef3f2; }
#event-log {
  background: #0f172a; color: #cbd5e1; border-radius: 8px; font-size: 12px;
  line-height: 1.55; padding: 14px; height: 240px; overflow-y: auto; margin: 0;
  white-space: pre-wrap; word-break: break-all;
}
#summary-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 18px; }
.sum-card { border: 1px solid var(--line); border-radius: 10px; text-align: center; padding: 14px 6px; }
.sum-val { font-size: 24px; font-weight: 700; color: var(--blue-dark); }
.sum-key { color: var(--muted); font-size: 13px; margin-top: 4px; }
.result-actions { display: flex; gap: 12px; margin-bottom: 14px; }
#filter-input {
  flex: 1; border: 1px solid var(--line); border-radius: 8px; padding: 9px 12px; font-size: 14px;
}
.btn {
  background: var(--blue); color: #fff; border-radius: 8px; padding: 9px 18px;
  font-size: 14px; text-decoration: none; align-self: center; white-space: nowrap;
}
.btn:hover { background: var(--blue-dark); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
th, td { border-bottom: 1px solid var(--line); padding: 7px 10px; text-align: left; white-space: nowrap; }
th { background: #eef2f9; position: sticky; top: 0; font-weight: 600; }
tbody tr:nth-child(even) { background: #fafbfd; }
#crop-gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px; }
#crop-gallery a { display: block; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
#crop-gallery img { width: 100%; height: 150px; object-fit: contain; background: #fff; display: block; }
footer { text-align: center; color: var(--muted); font-size: 12px; padding: 18px 0 30px; }
@media (max-width: 640px) { #summary-cards { grid-template-columns: repeat(2, 1fr); } }