:root {
  --bg: #0e0e10;
  --card: #1c1c1e;
  --card2: #252528;
  --text: #f2f2f7;
  --muted: #8e8e93;
  --line: #2c2c2e;
  --green: #30d158;
  --red: #ff453a;
  --blue: #64d2ff;
  --warn: #ffd60a;
  --okbg: rgba(48, 209, 88, 0.14);
  --issuebg: rgba(255, 69, 58, 0.14);
  --skipbg: rgba(142, 142, 147, 0.16);
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", sans-serif; }
body { max-width: 720px; margin: 0 auto; min-height: 100vh; }
header.app {
  position: sticky; top: 0; z-index: 20;
  background: rgba(14,14,16,.92); backdrop-filter: blur(12px);
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-bottom: 1px solid var(--line);
}
header.app h1 { font-size: 18px; margin: 0; font-weight: 650; }
header.app .actions { display: flex; gap: 8px; }
.iconbtn {
  background: var(--card2); border: 0; color: var(--text); border-radius: 999px;
  padding: 6px 12px; font-size: 13px; cursor: pointer;
}
.wrap { padding: 12px 14px 80px; }
.card { background: var(--card); border-radius: 14px; padding: 14px; margin: 12px 0; }
.lead { color: var(--muted); font-size: 13px; line-height: 1.55; }
.checkrow { display: flex; gap: 10px; align-items: flex-start; padding: 8px 0; font-size: 15px; }
.checkrow input { margin-top: 4px; }
.safety { background: #3a3208; color: #ffe08a; border-radius: 10px; padding: 10px 12px; font-size: 13px; line-height: 1.5; margin-top: 8px; }
.hint { background: #3b1010; color: #ffb4ae; border-radius: 10px; padding: 10px 12px; font-size: 13px; margin: 12px 0; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin: 8px 0 4px; }
.chip {
  border: 0; background: var(--card2); color: var(--text); border-radius: 999px;
  padding: 6px 12px; font-size: 13px; cursor: pointer;
}
.chip.on { background: #2c6bed; }
.sec-title { font-size: 15px; font-weight: 650; margin: 22px 4px 8px; color: #d1d1d6; }
.item { background: var(--card); border-radius: 14px; padding: 14px 14px 12px; margin: 10px 0; }
.item.done-ok { outline: 1px solid rgba(48,209,88,.35); }
.item.done-issue { outline: 1px solid rgba(255,69,58,.45); }
.item.done-skip { outline: 1px solid rgba(142,142,147,.35); }
.item-hd { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; }
.item-hd h3 { margin: 0; font-size: 16px; font-weight: 650; }
.badge { font-size: 11px; color: var(--blue); background: rgba(100,210,255,.12); border-radius: 6px; padding: 2px 6px; white-space: nowrap; }
.intro { color: var(--muted); font-size: 13px; line-height: 1.5; margin: 6px 0 10px; }
.btns { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.btn {
  border-radius: 10px; border: 1px solid var(--line); background: transparent;
  color: var(--text); padding: 9px 4px; font-size: 12px; cursor: pointer;
}
.btn.ok { border-color: var(--green); color: var(--green); }
.btn.ok.on { background: var(--okbg); }
.btn.issue { border-color: var(--red); color: var(--red); }
.btn.issue.on { background: var(--issuebg); }
.btn.skip { border-color: #8e8e93; color: #c7c7cc; }
.btn.skip.on { background: var(--skipbg); }
.tut-toggle { color: var(--blue); background: none; border: 0; font-size: 13px; padding: 6px 0; cursor: pointer; }
.tut { background: var(--card2); border-radius: 12px; padding: 12px; margin: 8px 0 12px; font-size: 13px; line-height: 1.65; color: #ddd; }
.tut-imgs { display: flex; gap: 8px; overflow-x: auto; margin-top: 10px; }
.tut-imgs figure { margin: 0; min-width: 140px; flex: 1; }
.tut-imgs img { width: 100%; border-radius: 8px; display: block; background: #000; cursor: zoom-in; }
.tut-imgs figcaption { font-size: 11px; color: var(--muted); text-align: center; margin-top: 4px; }
.note { width: 100%; margin-top: 8px; background: #111; border: 1px solid var(--line); color: var(--text); border-radius: 8px; padding: 8px; font-size: 13px; }
.smart-enter { width: 100%; margin: 6px 0 10px; background: #1a3050; color: var(--blue); border: 0; border-radius: 10px; padding: 10px; font-size: 14px; cursor: pointer; }
.page { display: none; }
.page.on { display: block; }
.back { background: none; border: 0; color: var(--blue); font-size: 15px; cursor: pointer; padding: 0 8px 0 0; }
.field { margin: 10px 0; }
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.field input, .field select, .field textarea {
  width: 100%; background: #111; border: 1px solid var(--line); color: var(--text);
  border-radius: 10px; padding: 10px; font-size: 16px;
}
.row3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.result { border-radius: 10px; padding: 10px 12px; margin-top: 12px; font-size: 14px; line-height: 1.5; }
.result.ok { background: var(--okbg); color: var(--green); }
.result.issue { background: var(--issuebg); color: #ff8a82; }
.result.pending { background: #1a3050; color: var(--blue); }
.vin-slot { background: var(--card2); border-radius: 12px; padding: 12px; margin: 10px 0; }
.vin-slot img { max-width: 100%; border-radius: 8px; margin-top: 8px; }
.footer-bar {
  position: sticky; bottom: 0; background: rgba(14,14,16,.95);
  border-top: 1px solid var(--line); padding: 10px 14px 16px;
  display: flex; justify-content: space-between; gap: 8px;
}
.footer-bar button { flex: 1; border: 0; border-radius: 10px; padding: 10px; font-size: 14px; cursor: pointer; }
.primary { background: #2c6bed; color: #fff; }
.ghost { background: var(--card2); color: var(--text); }
.lightbox { position: fixed; inset: 0; background: rgba(0,0,0,.92); display: none; align-items: center; justify-content: center; z-index: 50; padding: 16px; }
.lightbox.on { display: flex; }
.lightbox img { max-width: 100%; max-height: 100%; }
.add-custom { width: 100%; border: 1px dashed #555; background: transparent; color: var(--muted); border-radius: 12px; padding: 14px; cursor: pointer; }
.hidden { display: none !important; }
@media (min-width: 800px) {
  .tut-imgs { display: grid; grid-template-columns: repeat(3, 1fr); overflow: visible; }
}