:root{
  --ink:#1d2a24; --muted:#5d6b64; --bg:#f4f7f5; --paper:#fff; --line:#dce6e0;
  --green:#2f6f4f; --green-d:#245a40; --green-soft:#e8f0eb; --amber:#9a6412; --red:#a3392f;
  --shadow:0 1px 3px rgba(29,42,36,.08),0 8px 24px rgba(29,42,36,.06);
}
*{box-sizing:border-box}
html{background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
body{margin:0;min-height:100vh;display:flex;flex-direction:column}
.wrap{width:100%;max-width:760px;margin:0 auto;padding:0 20px}
header{background:var(--paper);border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:baseline;gap:10px;padding:16px 20px}
.brand{font-weight:700;font-size:19px;letter-spacing:-.01em;color:var(--green)}
.tag{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:20px;padding:1px 9px}
main{flex:1;padding:36px 0 48px}
h1{font-size:28px;line-height:1.2;margin:0 0 12px;letter-spacing:-.01em}
h2{font-size:23px;margin:0 0 10px}
.lead{color:var(--muted);margin:0 0 28px;max-width:62ch}
.view{animation:fade .25s ease}
@media (prefers-reduced-motion:reduce){.view{animation:none}}
@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}

.cards{display:grid;gap:14px}
.card{display:flex;flex-direction:column;gap:5px;text-align:left;background:var(--paper);border:1px solid var(--line);
  border-radius:12px;padding:18px 20px;cursor:pointer;box-shadow:var(--shadow);font:inherit;color:inherit;transition:border-color .15s,transform .15s}
.card:hover{border-color:var(--green);transform:translateY(-1px)}
.card:focus-visible{outline:3px solid var(--green);outline-offset:2px}
.card-t{font-weight:650;font-size:18px}
.card-d{color:var(--muted);font-size:15px}

.back{background:none;border:none;color:var(--green);font:inherit;font-weight:600;cursor:pointer;padding:0;margin:0 0 14px}
.steps{margin:0 0 22px;padding-left:22px;color:var(--muted)}
.steps li{margin:6px 0}
.steps code,code{background:var(--green-soft);border-radius:5px;padding:1px 6px;font-size:14px}

.drop{display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;border:2px dashed var(--line);
  border-radius:12px;padding:34px 20px;cursor:pointer;background:var(--paper);transition:border-color .15s,background .15s}
.drop:hover,.drop.over{border-color:var(--green);background:var(--green-soft)}
.drop-t{font-weight:600}
.drop-n{color:var(--green);font-size:15px;font-weight:600}

.consent{display:flex;gap:10px;align-items:flex-start;margin:18px 0 22px;font-size:14px;color:var(--muted)}
.consent input{margin-top:3px;flex:none;width:18px;height:18px;accent-color:var(--green)}
.consent a{color:var(--green)}

.primary{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--green);color:#fff;border:2px solid var(--green);
  border-radius:10px;padding:14px 22px;font:inherit;font-weight:650;cursor:pointer;text-decoration:none;transition:background .15s}
.primary:hover{background:var(--green-d);border-color:var(--green-d)}
.primary:disabled{opacity:.45;cursor:default}
.primary:focus-visible,.ghost:focus-visible{outline:3px solid var(--ink);outline-offset:2px}
.ghost{background:none;border:2px solid var(--line);color:var(--muted);border-radius:10px;padding:14px 22px;font:inherit;font-weight:600;cursor:pointer}
.ghost:hover{border-color:var(--muted)}

.counts{display:flex;flex-wrap:wrap;gap:0;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--paper);margin:0 0 20px}
.counts .c{flex:1 1 25%;min-width:120px;text-align:center;padding:14px 8px;border-right:1px solid var(--line)}
.counts .c:last-child{border-right:none}
.counts .n{font-size:22px;font-weight:700;color:var(--green)}
.counts .l{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.3px}

.preview{position:relative;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--paper);box-shadow:var(--shadow)}
.preview img{display:block;width:100%;height:auto}
.preview .lock{position:absolute;inset:auto 0 0 0;background:linear-gradient(rgba(255,255,255,0),var(--paper) 62%);
  padding:60px 20px 22px;text-align:center;font-weight:600}
.paybar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:22px 0 8px}
#price{font-weight:700}
.fine{font-size:13px;color:var(--muted);margin:6px 0 0}
.err{color:var(--red);font-weight:600;margin:14px 0 0}
.working{display:flex;align-items:center;gap:12px;margin-top:18px;color:var(--muted);font-weight:600}
.spin{width:20px;height:20px;border:3px solid var(--green-soft);border-top-color:var(--green);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.ok{width:54px;height:54px;border-radius:50%;background:var(--green);color:#fff;display:grid;place-items:center;font-size:30px;margin:0 0 14px}
#view-done .primary{margin:6px 0 14px}

footer{border-top:1px solid var(--line);background:var(--paper)}
footer.wrap,footer .wrap{max-width:760px}
footer{display:flex;flex-wrap:wrap;gap:6px 18px;justify-content:space-between;padding:16px 20px;font-size:13px;color:var(--muted)}

.warnbox{background:#fbf3e4;border-left:4px solid var(--amber);border-radius:0 8px 8px 0;padding:12px 15px;margin:0 0 20px;font-size:14px}
.paychoice{display:grid;grid-template-columns:1fr auto 1fr;gap:18px;align-items:stretch;margin:0 0 8px}
.pc{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:18px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:10px}
.pc-t{font-weight:650;font-size:17px}
.pc-d{color:var(--muted);font-size:14px;flex:1}
.pcor{align-self:center;color:var(--muted);font-size:14px}
.keyrow{display:flex;gap:8px}
.keyrow input{flex:1;min-width:0;border:1px solid var(--line);border-radius:8px;padding:10px 12px;font:inherit;letter-spacing:.5px;text-transform:uppercase}
.keyrow input:focus{outline:2px solid var(--green);border-color:var(--green)}
.keystate{font-size:14px;font-weight:600;margin:0}
.keystate.ok{color:var(--green)}.keystate.bad{color:var(--red)}
.ghost.wide,.primary.wide{width:100%;margin-top:14px}
.keepkey{background:var(--green-soft);border-radius:12px;padding:16px 18px;margin:0 0 18px;text-align:left}
.keycode{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:20px;font-weight:700;letter-spacing:1px;color:var(--green-d);margin:6px 0;user-select:all}
@media(max-width:640px){.paychoice{grid-template-columns:1fr}.pcor{padding:2px 0}}