:root{font-family:system-ui,-apple-system,"Microsoft YaHei",sans-serif;color:#193b34;background:#f4f5ed;color-scheme:light}*{box-sizing:border-box}body{margin:0;padding:20px}main{max-width:760px;margin:auto}header{display:flex;justify-content:space-between;align-items:center;gap:16px}.brand{font-size:22px;font-weight:800;letter-spacing:2px;text-decoration:none;color:inherit}.brand span{font-size:10px;letter-spacing:3px;display:block}nav,.tabs{display:flex;gap:8px}button,input,select{font:inherit}button{padding:12px 16px;border:1px solid #b7c7bb;border-radius:8px;background:#fff;color:#193b34;cursor:pointer}button[aria-pressed=true]{background:#193b34;color:#e2f69d}button:disabled{opacity:.5;cursor:wait}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #6e9420;outline-offset:2px}h1{font-size:clamp(24px,5vw,34px);line-height:1.1;margin:10px 0}.eyebrow{font-size:11px;letter-spacing:2px;margin:22px 0 8px}#intro,.hint,footer{font-size:13px;color:#566c64;line-height:1.6}.tabs{margin:20px 0;flex-wrap:wrap}.tabs button{flex:1}form{display:grid;grid-template-columns:1fr 1fr;gap:14px}label{display:flex;flex-direction:column;gap:7px;font-size:13px;font-weight:600}input,select{width:100%;min-width:0;padding:12px;background:white;color:#193b34;border:1px solid #b7c7bb;border-radius:8px;font-size:16px}#mode-hint,#submit{grid-column:1/-1}.primary{background:#193b34;color:#e2f69d;font-weight:700}.hint{margin:0}#result{min-height:24px;line-height:1.5;overflow-wrap:anywhere}details{border-top:1px solid #d5dfd4;padding-top:16px;margin-top:16px}summary{cursor:pointer;padding:8px 0}#admin-panel{padding:12px 0}#admin-panel>button{margin:12px 0}.fields{display:grid;grid-template-columns:2fr 1fr 1fr;gap:10px}#invitations button{display:block;margin:8px 0;width:100%;text-align:left}#created-code{overflow-wrap:anywhere;font-family:monospace;user-select:all}footer{border-top:1px solid #d5dfd4;margin-top:20px;padding:12px 0}footer span{color:#193b34}body [hidden]{display:none!important}@media(max-width:480px){body{padding:16px}form{grid-template-columns:1fr}.fields{grid-template-columns:1fr 1fr}.fields label:first-child{grid-column:1/-1}header{align-items:flex-start}.brand{font-size:18px}nav button{padding:9px;font-size:12px}}@media(max-height:500px) and (min-width:600px){body{padding:12px 24px}h1{font-size:25px}.eyebrow{margin-top:12px}.tabs{margin:12px 0}}

header{flex-wrap:wrap}header nav{display:flex;flex-wrap:wrap;gap:6px;margin-left:auto}header nav button{padding:7px 10px;font-size:13px}