:root{
  --red:#df2030;
  --red2:#ff4a35;
  --gold:#f2b64a;
  --ink:#1e2a3a;
  --muted:#68778c;
  --bg:#f4f8fc;
  --card:#ffffff;
  --line:#e5ebf2;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:
    radial-gradient(circle at 12% 8%,rgba(255,223,130,.35),transparent 24%),
    linear-gradient(180deg,#eaf7ff 0,#f8fbff 55%,#fff7ee 100%);
}
.page{max-width:680px;margin:0 auto;padding:0 16px 36px}
.hero{
  position:relative;
  min-height:300px;
  margin:0 -16px 18px;
  padding:42px 24px 28px;
  text-align:center;
  overflow:hidden;
  color:white;
  background:
    linear-gradient(135deg,rgba(223,32,48,.98),rgba(255,93,44,.94)),
    linear-gradient(180deg,#47b7ff,#78d1ff);
  border-radius:0 0 34px 34px;
  box-shadow:0 16px 40px rgba(223,32,48,.2);
}
.hero:before,.hero:after{
  content:"";
  position:absolute;
  width:240px;height:240px;
  border-radius:50%;
  background:rgba(255,255,255,.1);
}
.hero:before{left:-120px;top:-80px}
.hero:after{right:-120px;bottom:-90px}
.flag{font-size:56px;margin-bottom:4px}
.school-icons{font-size:28px;letter-spacing:10px;margin-bottom:10px}
.hero h1{margin:0;font-size:44px;line-height:1.15;text-shadow:0 4px 0 rgba(132,19,26,.28)}
.hero p{font-weight:700;letter-spacing:3px;margin-top:16px;color:#fff3c8}
.card,.prize-card,.rules{
  background:rgba(255,255,255,.95);
  border:1px solid rgba(255,255,255,.8);
  border-radius:24px;
  padding:22px;
  margin:16px 0;
  box-shadow:0 12px 32px rgba(47,78,110,.09);
}
h2,h3{margin-top:0}
label{display:block;font-weight:700;margin:14px 0 8px}
input{
  width:100%;
  border:1px solid #d7e0eb;
  background:#fbfdff;
  padding:14px 15px;
  font-size:16px;
  border-radius:14px;
  outline:none;
}
input:focus{border-color:#6bbcff;box-shadow:0 0 0 3px rgba(50,153,255,.12)}
.agree{display:flex;align-items:flex-start;gap:10px;font-weight:400;color:var(--muted);font-size:14px;line-height:1.5}
.agree input{width:auto;margin-top:3px}
.primary,.secondary,.link-btn{
  border:0;border-radius:14px;padding:14px 18px;font-size:16px;font-weight:800;cursor:pointer;
}
.primary{
  width:100%;
  color:white;
  margin-top:14px;
  background:linear-gradient(135deg,var(--red2),var(--red));
  box-shadow:0 8px 20px rgba(223,32,48,.25);
}
.primary:disabled{opacity:.6;cursor:not-allowed}
.secondary,.link-btn{background:#eef5fb;color:#24527b;text-decoration:none}
.message{min-height:22px;margin-top:10px;font-size:14px;color:#c62828}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.prize{
  background:linear-gradient(180deg,#fffdf8,#fff8ed);
  border:1px solid #f5dfba;
  border-radius:18px;
  padding:16px;text-align:center;font-size:36px;
}
.prize b,.prize span{display:block}
.prize b{font-size:16px;margin-top:7px}
.prize span{font-size:13px;color:#8c6c38;margin-top:4px}
.prize .prize-emoji{font-size:36px;line-height:1.25;margin:0}
.prize-image{display:block;width:100%;height:52px;object-fit:contain}
.result-image{display:block;width:120px;height:100px;object-fit:contain;margin:0 auto 8px}
.rules p{margin:8px 0;color:#566679}
footer{text-align:center;margin-top:18px}
footer a{color:#8c99a8;font-size:13px;text-decoration:none}
.modal{
  position:fixed;inset:0;background:rgba(9,24,40,.58);
  display:flex;align-items:center;justify-content:center;padding:20px;z-index:20;
}
.hidden{display:none!important}
.modal-box{
  width:min(92vw,430px);background:white;border-radius:26px;padding:30px;text-align:center;
  box-shadow:0 30px 70px rgba(0,0,0,.28);
}
.confetti{font-size:56px}
.result-prize{font-size:30px;font-weight:900;color:var(--red);margin:15px 0}
.result-code{background:#fff7e9;border-radius:12px;padding:12px;margin:16px 0;color:#72541f}

.admin-page{max-width:1100px;margin:0 auto;padding:28px 16px}
.admin-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px}
.admin-head h1{margin:0}
.admin-head p{margin:6px 0 0;color:var(--muted)}
.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.stat{
  background:white;border-radius:20px;padding:20px;box-shadow:0 10px 26px rgba(47,78,110,.08)
}
.stat span{display:block;color:var(--muted);font-size:14px}
.stat b{display:block;font-size:34px;margin-top:7px}
.section-title{display:flex;justify-content:space-between;align-items:center;gap:10px}
.prize-edit-row{
  display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:10px;align-items:center;
  border-bottom:1px solid var(--line);padding:10px 0
}
.prize-edit-row:last-child{border-bottom:0}
.prize-identity{display:flex;align-items:center;gap:12px;min-width:0}
.prize-identity label{flex:1;min-width:0}
.prize-thumb,.prize-thumb-emoji{width:56px;height:56px;flex:none;object-fit:contain;text-align:center;font-size:38px}
.prize-image-actions{grid-column:1/-1;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.prize-image-actions input{max-width:300px;font-size:13px;padding:8px}
.prize-image-actions span{font-size:12px;color:var(--muted)}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse}
th,td{padding:11px 10px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
th{font-size:13px;color:#64758b}
td{font-size:14px}
@media(max-width:640px){
  .hero{min-height:250px}
  .hero h1{font-size:36px}
  .stats-row{grid-template-columns:1fr}
  .admin-head{align-items:flex-start;flex-direction:column}
}


.action-group{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.danger,.danger-outline{
  border:0;border-radius:14px;padding:14px 18px;font-size:15px;font-weight:800;cursor:pointer;
}
.danger{background:#d92d20;color:#fff;box-shadow:0 8px 18px rgba(217,45,32,.18)}
.danger:hover{background:#b42318}
.danger-outline{background:#fff1f0;color:#b42318;border:1px solid #f3b6b0}
.danger-outline:hover{background:#ffe4e1}
.delete-row-btn{
  border:1px solid #f1b6b0;background:#fff5f4;color:#b42318;
  border-radius:10px;padding:7px 11px;font-weight:700;cursor:pointer;white-space:nowrap
}
.delete-row-btn:hover{background:#ffe8e5}
.danger-tip{font-size:13px;color:#9b3a32;margin:14px 0 0}
.admin-modal-box{text-align:left;max-width:440px}
.admin-modal-box h2{text-align:center}
.warning-icon{text-align:center;font-size:48px}
.modal-desc{color:#667085;line-height:1.6;text-align:center}
.danger-text{color:#b42318;font-weight:800;text-align:center}
.modal-actions{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}
.modal-button{width:100%;margin:0}
.section-title-wrap{flex-wrap:wrap}
@media(max-width:640px){
  .action-group{width:100%}
  .action-group button{flex:1}
}


.actions{display:flex;gap:8px;flex-wrap:wrap}
.danger,.danger-outline{
  border:0;border-radius:14px;padding:12px 16px;font-size:14px;font-weight:800;cursor:pointer;
}
.danger{background:#d9363e;color:#fff}
.danger-outline{background:#fff0f1;color:#c62828;border:1px solid #efb9bd}
.danger:hover{filter:brightness(.96)}
.danger-outline:hover{background:#ffe8ea}
.table-delete{
  border:0;background:#fff0f1;color:#c62828;border-radius:10px;
  padding:7px 10px;font-weight:700;cursor:pointer;white-space:nowrap
}
.modal-note{color:#6b7788;line-height:1.6;margin:8px 0 16px}
.modal-actions{display:flex;gap:10px;margin-top:16px}
.modal-actions button{flex:1}
.warning-icon{font-size:48px}
.delete-summary{
  background:#f7f9fc;border:1px solid #e5ebf2;border-radius:12px;
  padding:12px 14px;text-align:left;color:#425268;font-size:14px;line-height:1.6
}
.access-notice{background:#fff5e6;border:1px solid #f2d8a8;border-radius:12px;padding:12px;color:#79551d;line-height:1.5}
.qr-status{font-weight:800;color:#24527b}
.qr-layout{display:grid;grid-template-columns:240px 1fr;gap:24px;align-items:start}
.qr-preview{width:236px;min-height:236px;padding:8px;background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px}
.qr-preview img,.qr-preview canvas{max-width:100%}
.qr-controls input[readonly]{background:#f2f5f9;font-size:14px}
.qr-help{font-size:13px;color:var(--muted);line-height:1.5}
.primary.compact{width:auto;margin:0;box-shadow:none}
@media(max-width:640px){.qr-layout{grid-template-columns:1fr}.qr-preview{margin:auto auto 12px}}
@media(max-width:640px){
  .prize-edit-row{grid-template-columns:1fr 1fr}
  .prize-identity{grid-column:1/-1}
  .prize-image-actions input{max-width:100%}
}