:root {
  --bg: #f3f6f4;
  --ink: #1c2b24;
  --accent: #1f6f5b;
  --line: #d5e0da;
  --danger: #a33b2b;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #d9efe6 0%, transparent 55%),
    linear-gradient(180deg, #eef5f1, var(--bg));
  min-height: 100vh;
}
.top, main, .tabs { max-width: 960px; margin: 0 auto; padding: 16px; }
.top h1 { margin: 0 0 8px; font-size: 1.8rem; }
.tabs { display: flex; gap: 8px; flex-wrap: wrap; }
.tab {
  border: 1px solid var(--line);
  background: #fff;
  padding: 10px 16px;
  cursor: pointer;
}
.tab.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.panel { display: none; background: rgba(255,255,255,0.9); border: 1px solid var(--line); padding: 16px; }
.panel.active { display: block; }
label { display: block; margin: 10px 0; }
label.inline { display: inline-flex; align-items: center; gap: 6px; margin: 0; }
input[type="text"], input:not([type]), input[type="file"] { width: 100%; margin-top: 4px; }
button[type="submit"], .btn {
  background: var(--accent); color: #fff; border: 0; padding: 10px 18px; cursor: pointer;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-ghost {
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--line);
}
.msg { min-height: 1.2em; color: var(--danger); }
.hint { color: #4a5c54; margin: 0 0 12px; line-height: 1.5; }
.person-list { list-style: none; padding: 0; }
.person-list li {
  display: flex; gap: 12px; align-items: center;
  border-top: 1px solid var(--line); padding: 10px 0;
}
.person-list img { width: 56px; height: 56px; object-fit: cover; }
.canvas-wrap { overflow: auto; margin-top: 12px; }
#result-canvas { max-width: 100%; border: 1px solid var(--line); }
table { width: 100%; border-collapse: collapse; margin-top: 12px; }
th, td { border-bottom: 1px solid var(--line); text-align: left; padding: 8px; }

.scan-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}
.scan-stage {
  position: relative;
  margin-top: 12px;
  background: #0f1a16;
  border-radius: 8px;
  overflow: hidden;
  min-height: 240px;
}
#scan-video, #scan-overlay {
  display: block;
  width: 100%;
  max-height: 70vh;
  object-fit: contain;
}
#scan-overlay {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.scan-toast {
  position: absolute;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  background: rgba(31, 111, 91, 0.92);
  color: #fff;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 15px;
  white-space: nowrap;
}
.scan-toast.warn { background: rgba(163, 59, 43, 0.92); }
.scan-title { margin: 16px 0 8px; font-size: 1.05rem; }
.scan-list { list-style: none; padding: 0; margin: 0; }
.scan-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding: 10px 0;
}
.scan-list .meta { color: #5b6d65; font-size: 0.9rem; }
@media (max-width: 640px) {
  .tabs { padding-bottom: 0; }
  .tab { flex: 1 1 auto; text-align: center; }
}