:root{--ink:#172d3c;--muted:#697b86;--blue:#20618c;--blue-dark:#174c6f;--line:#dde6eb;--bg:#f3f6f8;--card:#fff;--radius:22px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);font-size:16px;line-height:1.75;font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}a{color:var(--blue)}button,a,input,select{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,[tabindex]:focus-visible{outline:3px solid #82bbdc;outline-offset:4px}.hidden{display:none!important}.participant-shell{max-width:560px;margin:0 auto;padding:54px 22px 28px;min-height:100svh}.study-mark{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:12px;letter-spacing:.07em;margin:0 4px 26px}.mark{display:block;width:11px;height:17px;border-radius:2px;background:var(--blue);box-shadow:6px 0 0 #c2d9e7}.participant-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:36px;box-shadow:0 16px 48px #18364b05}.eyebrow{font-size:12px;letter-spacing:.1em;color:var(--blue);font-weight:650;margin:0 0 15px}h1{font-size:36px;line-height:1.3;font-weight:650;letter-spacing:-.04em;margin:0 0 20px}.study-meta{display:flex;gap:16px;font-size:12px;color:var(--muted);padding:0 0 24px;border-bottom:1px solid var(--line);margin-bottom:26px}.study-meta span+span:before{content:'·';margin-right:16px;color:#a8bcc8}p{margin:0 0 17px}.participant-card>p{font-size:15px;color:#485f6d}.participant-card .lead{font-weight:550;color:var(--ink)}.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:11px 20px;border-radius:11px;border:1px solid transparent;text-decoration:none;font-size:14px;font-weight:600;cursor:pointer;line-height:1.5;white-space:normal;text-align:center}.button.primary{background:var(--blue);color:white}.button.primary:hover{background:var(--blue-dark)}.button:disabled{opacity:.55;cursor:wait}.button.secondary{border-color:var(--line);background:white;color:var(--ink)}.button.text-button{background:transparent;color:var(--blue)}.button.full{width:100%}.participant-card>.primary{margin-top:12px;min-height:54px}.under-button{font-size:12px!important;text-align:center;color:var(--muted)!important;margin:14px 0 0;line-height:1.7}.participant-footer{font-size:11px;line-height:1.8;color:#83929c;margin:22px 10px 0}.code-heading{font-size:21px;letter-spacing:0;font-weight:550;text-align:center;margin:22px 0 10px}.participant-code{font-family:ui-monospace,"SFMono-Regular",Consolas,monospace;font-size:clamp(34px,10vw,49px);font-weight:650;letter-spacing:.04em;color:var(--blue);background:#eff6fa;border:1px solid #ddebf3;border-radius:14px;line-height:1.2;text-align:center;white-space:nowrap;padding:27px 8px;user-select:text;-webkit-user-select:text;cursor:text;margin:20px 0 23px}.code-instruction{text-align:center;line-height:1.85}.manual-actions{display:grid;gap:6px;margin-top:9px}.small{font-size:12px!important}.muted{color:var(--muted)!important}.code-panel .small{margin-top:20px}.notice{padding:13px 15px;background:#edf4f9;color:#285877;border:1px solid #d6e4ef;border-radius:10px;font-size:13px;line-height:1.7;margin:16px 0}.notice.error{background:#fff2ee;border-color:#f0d9cf;color:#8c3c24}.clipboard-helper{position:fixed;left:0;top:0;width:2px;height:2px;opacity:0;pointer-events:none}.login-shell{max-width:510px;margin:65px auto;padding:0 20px}.back-link{font-size:13px;text-decoration:none}.login-shell>.back-link{display:block;margin:0 0 24px 8px}.login-title{font-size:27px;letter-spacing:-.02em}label{display:block;font-size:13px;font-weight:550;color:#4d6371}input,select{display:block;width:100%;padding:10px 12px;border:1px solid #cfdce5;border-radius:9px;color:var(--ink);background:#fff;min-height:44px;margin-top:5px;min-width:0}form>label{margin-bottom:15px}code{font-size:12px;word-break:break-all}.admin-shell{max-width:1240px;margin:0 auto;padding:42px 30px}.admin-header{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}.admin-header h1{font-size:29px;letter-spacing:-.02em;margin:0}.admin-header .eyebrow{margin-bottom:7px}.status-strip{display:flex;align-items:center;gap:22px;font-size:13px;margin-bottom:22px;flex-wrap:wrap}.badge{display:inline-flex;padding:4px 11px;font-size:12px;font-weight:600;border-radius:20px}.badge.paused{background:#f8edd8;color:#805e21}.badge.running{background:#e1eee8;color:#34624d}.admin-section{background:white;border:1px solid var(--line);border-radius:16px;padding:25px;margin-bottom:20px}.admin-section h2{font-size:17px;margin:0 0 6px;letter-spacing:-.02em}.control-grid{display:grid;grid-template-columns:1fr auto;gap:25px;align-items:center}.inline-form,.filter-form{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap}.inline-form label,.filter-form label{margin:0}.inline-form select{min-width:130px}.filter-form{margin:19px 0}.filter-form input{max-width:180px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:18px}.section-heading p{margin:0}.count{font-size:30px;margin-left:10px;font-variant-numeric:tabular-nums;color:var(--blue);vertical-align:baseline}.export-actions{display:flex;gap:9px;flex-wrap:wrap}.counts-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:11px}.count-card{border:1px solid var(--line);border-radius:11px;padding:12px 15px;background:#fcfdfe}.count-card span{font-size:11px;color:var(--muted);display:block}.count-card strong{font-size:27px;display:block;font-weight:600;line-height:1.55}.count-card small{font-family:ui-monospace,monospace;font-size:10px;color:#8795a0}.table-scroll{overflow:auto}table{width:100%;border-collapse:collapse;text-align:left;font-size:12px;white-space:nowrap}th{background:#f5f8fa;color:#67808f;font-weight:550}th,td{padding:12px 14px;border-bottom:1px solid var(--line)}td{color:#3c5565}.mono{font-family:ui-monospace,monospace}.empty{text-align:center;padding:34px 20px;color:var(--muted);white-space:normal}.pagination{display:flex;justify-content:flex-end;gap:22px;font-size:13px;margin-top:16px}.link-form{display:flex;align-items:flex-end;gap:10px;margin:15px 0}.link-form label{flex:1;margin:0}.link-form input{font-family:ui-monospace,monospace;font-size:12px}.link-form .button{white-space:nowrap}summary{cursor:pointer;font-size:15px;font-weight:600}.audit-detail{max-width:480px;white-space:normal;overflow-wrap:anywhere;font-size:11px}.admin-footer{font-size:12px;color:var(--muted);text-align:center;margin:30px 0}.danger-zone p{margin-top:14px;font-size:13px}.danger-zone form{max-width:440px}.button.danger{background:#a34936;color:white}details>p{margin-top:16px}
@media(max-width:900px){.control-grid{grid-template-columns:1fr}.counts-grid{grid-template-columns:repeat(4,1fr)}.section-heading{align-items:flex-start;flex-direction:column}}@media(max-width:540px){.participant-shell{padding:30px 16px 25px}.participant-card{padding:27px 24px;border-radius:18px}h1{font-size:32px}.participant-card>p{font-size:14px}.participant-code{padding:25px 5px}.admin-shell{padding:25px 14px}.admin-header h1{font-size:23px}.admin-section{padding:18px}.counts-grid{grid-template-columns:repeat(3,1fr);gap:8px}.count-card{padding:10px}.status-strip{gap:10px}.inline-form{align-items:stretch}.inline-form label{flex:1;min-width:110px}.inline-form .button{width:100%}.filter-form label{flex:1;min-width:120px}.link-form{flex-wrap:wrap}.link-form label{flex-basis:100%}.admin-header>.button{font-size:12px}.login-shell{margin:35px auto}.code-heading{font-size:20px}.under-button{font-size:11px!important}.participant-footer{margin-left:5px;margin-right:5px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

.study-name{font-size:16px!important;color:var(--ink)!important;margin-top:-7px;margin-bottom:20px}.registration{text-align:center;margin-top:15px;line-height:1.9}.registration a{color:#627784;text-decoration:none;white-space:nowrap}.registration a:hover{text-decoration:underline}