:root {
  --bg: #eef2f1; --card: #ffffff; --ink: #14201b; --muted: #66736d; --line: #d9e1dd;
  --green: #1aa260; --green-dark: #128048; --soft: #e9f7ef; --red: #c0392b; --head: #0b1014;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0c1110; --card: #161d1b; --ink: #e8eeeb; --muted: #94a19b; --line: #2a3431; --soft: #173326; }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body {
  min-height: 100svh; background: var(--bg); color: var(--ink);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  display: flex; flex-direction: column; align-items: center; padding: 24px 16px;
}
.card { width: 100%; max-width: 440px; background: var(--card); border-radius: 18px; overflow: hidden; box-shadow: 0 10px 30px rgba(0,0,0,.08); }
.top { background: var(--head); color: #fff; text-align: center; padding: 22px 20px 18px; }
.logo { width: 120px; height: auto; display: block; margin: 0 auto 10px; }
h1 { margin: 0; font-size: 21px; font-weight: 650; }
.sub { margin: 4px 0 0; color: #a8b6b0; font-size: 14px; }
.step { display: flex; flex-direction: column; gap: 6px; padding: 22px 20px 24px; }
label { font-size: 14px; font-weight: 600; color: var(--muted); margin-top: 8px; }
input {
  font: inherit; color: inherit; width: 100%; padding: 12px 14px; border-radius: 12px;
  border: 1px solid var(--line); background: var(--bg); outline: none;
}
input:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(26,162,96,.18); }
.pin { font-size: 26px; letter-spacing: .5em; text-align: center; }
.drop {
  display: grid; place-items: center; min-height: 170px; border: 2px dashed var(--line); border-radius: 14px;
  background: var(--bg); cursor: pointer; overflow: hidden; color: var(--muted); font-weight: 500; margin-top: 0;
}
.drop img { width: 100%; max-height: 300px; object-fit: contain; display: block; }
.drop.has-photo { border-style: solid; padding: 6px; }
.btn {
  margin-top: 16px; font: inherit; font-weight: 650; font-size: 17px; padding: 14px; border: 0; border-radius: 12px;
  background: var(--green); color: #fff; cursor: pointer;
}
.btn:hover { background: var(--green-dark); }
.btn:disabled { opacity: .55; cursor: default; }
.btn.ghost { background: transparent; color: var(--green); border: 1px solid var(--line); }
.error { color: var(--red); min-height: 1.2em; margin: 6px 0 0; font-size: 14px; }
.to { margin: 0 0 6px; color: var(--muted); }
.to b { color: var(--ink); }
.track { list-style: none; margin: 4px 0 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.track li { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: 12px; color: var(--muted); }
.track li::before {
  content: ""; width: 22px; height: 22px; flex: none; border-radius: 50%; border: 2px solid var(--line);
}
.track li.wait::before { border-color: var(--green); border-top-color: transparent; animation: spin .8s linear infinite; }
.track li.done { color: var(--ink); background: var(--soft); font-weight: 600; }
.track li.done::before {
  border: 0; background: var(--green) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/16px no-repeat;
}
.track li.bad { color: var(--red); background: rgba(192,57,43,.08); font-weight: 600; }
.track li.bad::before { border-color: var(--red); }
.note { margin: 8px 0 0; font-size: 14px; color: var(--muted); }
.foot { color: var(--muted); font-size: 12px; margin-top: 16px; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .track li.wait::before { animation: none; } }