:root{--pad:40px;--maxw:860px;--topbar-h:56px;--radius:18px;--shadow:0 16px 50px rgba(0,0,0,0.10)}
@media (max-width:420px){:root{--pad:20px;--topbar-h:52px}}
*{box-sizing:border-box}
body{margin:0;color:#111;font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif; background:
  radial-gradient(900px 280px at 20% 0%, rgba(106,90,205,0.12), transparent 60%),
  radial-gradient(900px 280px at 80% 20%, rgba(0,188,212,0.10), transparent 60%),
  #ffffff;
}
.topbar{position:fixed;top:0;left:0;right:0;height:var(--topbar-h);display:flex;align-items:center;z-index:1000;
  background:rgba(255,255,255,0.88);backdrop-filter:blur(10px);border-bottom:1px solid rgba(0,0,0,0.06);
}
.topbarInner{max-width:var(--maxw);width:100%;margin:0 auto;padding:0 var(--pad);display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{font-weight:700;letter-spacing:0.2px;font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
@media (max-width:420px){.brand{font-size:15px}}
.logout{font-weight:800;text-decoration:none;color:#111;border:1px solid rgba(0,0,0,0.12);padding:8px 12px;border-radius:12px;background:#fff;white-space:nowrap;font-size:14px}
@media (max-width:420px){.logout{padding:7px 10px;font-size:13px}}
main{padding-top:calc(var(--topbar-h) + 18px);padding-left:var(--pad);padding-right:var(--pad);padding-bottom:40px}
.pageCenter{max-width:720px;margin:0 auto}

.container{max-width:720px;margin:0 auto}
.card{background:rgba(255,255,255,0.92);border:1px solid rgba(0,0,0,0.10);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}
.centerCard{display:flex;flex-direction:column;align-items:center;text-align:center}
.formStack{align-items:center}
.formStack input{width:min(320px, 100%)}

.h1{font-size:40px;line-height:1.05;margin:12px 0 14px;font-weight:800}
@media (max-width:420px){.h1{font-size:34px}}
.p{margin:8px 0;color:#333}
.small{color:#666;font-size:13px}
.err{color:#b00020;margin-top:10px}
.row{display:flex;gap:18px;flex-wrap:wrap;align-items:flex-end}
.genRow{justify-content:center;width:100%;max-width:560px;margin:0 auto}
.genRow > div{display:flex;flex-direction:column;align-items:center}

label{display:block;margin:0 0 6px;font-weight:600}
.formStack{display:flex;flex-direction:column;gap:12px}

input[type=number],input[type=password]{padding:10px;font-size:16px;width:220px;max-width:100%;border:1px solid rgba(0,0,0,0.12);border-radius:12px;background:#fff}
button{padding:12px 16px;font-size:16px;cursor:pointer;border-radius:14px;border:1px solid rgba(0,0,0,0.10);background:#1565ff;color:#fff;font-weight:800;box-shadow:0 10px 24px rgba(21,101,255,0.18)}
button:disabled{opacity:0.55;cursor:not-allowed}
button.secondary{background:#fff;color:#1565ff;border-color:rgba(21,101,255,0.30);box-shadow:none}

.progressWrap{margin-top:14px}
.progressBar{height:10px;background:#eee;border-radius:999px;overflow:hidden}
.progressFill{height:100%;width:0%;background:linear-gradient(90deg,#6a5acd,#00bcd4);border-radius:999px}
.status{margin-top:8px;color:#666;font-size:13px;min-height:18px}
.centerWrap{max-width:760px;margin:0 auto;display:flex;align-items:center;justify-content:center;min-height:calc(100dvh - var(--topbar-h) - 18px - 40px)}
.resultCard{text-align:center;padding:26px}
.numBox{display:inline-flex;align-items:center;justify-content:center;min-width:160px;min-height:160px;padding:18px 26px;border-radius:22px;
  background:linear-gradient(135deg, rgba(106,90,205,0.18), rgba(0,188,212,0.16));border:1px solid rgba(0,0,0,0.06)}
.num{font-size:84px;font-weight:800;letter-spacing:1px;line-height:1}
.btnRow{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:16px}
.btn{display:inline-block;padding:12px 16px;border-radius:12px;text-decoration:none;font-weight:800;border:1px solid rgba(0,0,0,0.12)}
.btnPrimary{background:#1565ff;color:#fff;border-color:#1565ff;box-shadow:0 10px 24px rgba(21,101,255,0.18)}
.btnGhost{background:#fff;color:#1565ff;border-color:rgba(21,101,255,0.30)}
textarea{width:100%;min-height:160px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:12px;padding:10px;border-radius:12px;border:1px solid rgba(0,0,0,0.12);background:#fff}
.copyRow{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.qr{border:1px solid rgba(0,0,0,0.12);border-radius:14px;padding:10px;display:inline-block;background:#fff}
canvas.confetti{position:fixed;inset:0;pointer-events:none;z-index:500}
.rankList{margin:16px auto 0; padding:0; list-style:none; width:min(420px, 100%); text-align:left}
.rankList li{display:flex; justify-content:space-between; gap:12px; padding:10px 12px; border:1px solid rgba(0,0,0,0.08); border-radius:12px; background:rgba(255,255,255,0.8); margin:8px 0}
.rankList .idx{color:#666; font-weight:600}
.rankList .val{font-weight:800; font-size:18px}