:root{color-scheme:light;--ink:#17332c;--accent:#29694e;--line:#dbe5df;--paper:#f4f7f3}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}header,footer{max-width:1080px;margin:auto;padding:24px;display:flex;align-items:center;justify-content:space-between;gap:16px}a{color:inherit;text-underline-offset:4px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:700;white-space:nowrap}.brand-sub{font-size:10px;letter-spacing:2px;font-weight:500}.mark{display:grid;place-items:center;width:32px;height:32px;border-radius:10px;background:var(--ink);color:white;font-size:21px}.eyebrow{font-size:11px;letter-spacing:2px;color:#6c8076}.accent{color:var(--accent)}main{max-width:1080px;margin:auto;padding:22px 24px 64px}.hero{text-align:center;padding:16px 0 20px}h1{font-size:clamp(26px,5vw,38px);line-height:1.25;letter-spacing:-1px;margin:10px 0 18px}h2{font-size:20px;margin:14px 0}.hero>p:last-child,.muted{color:#64746b}.qr-card{max-width:440px;margin:20px auto;padding:34px;border:1px solid var(--line);border-radius:24px;background:#fff;text-align:center;box-shadow:0 18px 45px #1a38290a}.badge{display:inline-block;padding:4px 12px;border-radius:30px;background:#ecf3ed;color:var(--accent);font-size:12px;white-space:nowrap}.qr-image{display:block;width:100%;max-width:300px;max-height:400px;object-fit:contain;margin:22px auto;background:white}.instructions{font-weight:600}.empty-icon{margin:10px auto 24px;font-size:56px;line-height:1.5;color:#4d8168}.footnote{text-align:center;color:#77857b;font-size:12px;max-width:440px;margin:24px auto}button,.button{display:inline-block;border:1px solid transparent;border-radius:10px;background:var(--ink);color:white;padding:12px 18px;font:inherit;font-size:14px;font-weight:600;cursor:pointer;text-decoration:none}button:disabled{opacity:.45;cursor:not-allowed}.secondary{background:#fff;color:var(--ink);border-color:var(--line)}button:hover:not(:disabled),.button:hover{filter:brightness(.92)}:focus-visible{outline:3px solid #81b58e;outline-offset:3px}footer{border-top:1px solid var(--line);justify-content:center;flex-wrap:wrap;font-size:11px;color:#738178;padding-bottom:28px}.panel{background:white;border:1px solid var(--line);border-radius:18px;padding:26px}.login{max-width:460px;margin:55px auto}.login button{width:100%}label{display:block;font-size:13px;font-weight:600;margin:18px 0}input,select{display:block;width:100%;max-width:100%;min-width:0;margin-top:7px;padding:11px;border:1px solid #cbd7cd;border-radius:8px;background:#fff;color:var(--ink);font:inherit;font-size:16px}input[type=file]{font-size:12px;white-space:normal}.check{display:flex;align-items:flex-start;gap:9px;font-size:12px;font-weight:400}.check input{width:17px;height:17px;margin:2px 0;flex-shrink:0}.admin-heading{display:flex;align-items:center;justify-content:space-between;gap:15px}.admin-heading h1{font-size:30px}.notice{padding:16px 20px;background:#e8f0e8;border-radius:12px;font-size:13px}.group-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:24px}.group{min-width:0}.group-heading{display:flex;justify-content:space-between;align-items:center;gap:12px}.group-heading h2{overflow-wrap:anywhere}.admin-image,.upload-preview{max-width:100%;max-height:220px;object-fit:contain;display:block;margin:15px auto}.upload-preview[hidden]{display:none}.edit-form button,.select-form button{width:100%}.select-form{margin-top:10px}.success{padding:12px;background:#e8f0e8;border-left:3px solid var(--accent)}#public-message:empty{display:none}@media(max-width:650px){header{padding:20px}.brand-sub{display:none}main{padding:12px 18px 40px}.hero{padding-top:15px}.hero>p:last-child{font-size:14px}.qr-card{padding:26px 22px;margin-top:15px}.group-grid{grid-template-columns:1fr}.panel{padding:22px}.login{margin:25px auto}.admin-heading{align-items:flex-start}.admin-heading h1{font-size:25px}.admin-heading button{white-space:nowrap}footer{gap:8px 14px}}