:root{color-scheme:light dark;--canvas:#f5f0e4;--paper:#fff9ee;--ink:#3f3b33;--muted:#766f64;--forest:#40513e;--line:#d6cfbf;--danger:#a6574b;font-family:ui-rounded,"SF Pro Rounded",system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--canvas);color:var(--ink)}a{color:var(--forest)}button,select,textarea{font:inherit}.shell{width:min(760px,100%);min-height:100vh;margin:auto;padding:28px 22px 70px}.top{display:flex;gap:18px;align-items:center;justify-content:space-between;margin-bottom:36px}.brand{font-weight:800;text-decoration:none;color:var(--ink)}nav{display:flex;flex-wrap:wrap;gap:10px;font-size:.88rem}nav a{text-underline-offset:4px}.language{display:flex;gap:8px;align-items:center}select,button,textarea{border:1px solid var(--line);border-radius:12px;padding:10px 12px;background:var(--paper);color:var(--ink)}button{cursor:pointer}.primary{border-color:var(--forest);background:var(--forest);color:white}.danger{border-color:var(--danger);color:var(--danger)}main{padding:clamp(22px,5vw,50px);border:1px solid var(--line);border-radius:28px;background:var(--paper);box-shadow:0 24px 70px rgb(64 81 62/.08)}h1{margin:0 0 10px;font-size:clamp(2rem,7vw,3.5rem);line-height:1;letter-spacing:-.05em}h2{margin-top:2rem;font-size:1.2rem}p,li{line-height:1.72}small,.muted{color:var(--muted)}.notice{padding:15px;border-radius:15px;background:color-mix(in srgb,var(--forest) 8%,transparent)}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.queue{display:grid;gap:14px}.card{padding:16px;border:1px solid var(--line);border-radius:16px;background:var(--canvas)}.card img{display:block;width:100%;max-height:360px;object-fit:contain;border-radius:12px;background:#111}.card textarea{width:100%;min-height:80px;margin:10px 0}.status{min-height:1.5em;color:var(--muted)}pre{overflow:auto;white-space:pre-wrap;font-size:.78rem;line-height:1.55}.hidden{display:none!important}.invite-code-card{display:grid;gap:10px;margin-top:24px;padding:20px;border:1px solid var(--line);border-radius:18px;background:var(--canvas)}.invite-code{display:block;user-select:all;font-size:clamp(2rem,8vw,3.5rem);font-weight:750;letter-spacing:.16em;color:var(--ink)}.invite-code:focus{outline:2px solid var(--forest);outline-offset:4px}.invite-steps{padding-left:1.4rem}.invite-open{text-decoration:none;border:1px solid var(--forest);border-radius:12px;padding:10px 12px}.invite-note{margin-top:22px}@media(prefers-color-scheme:dark){:root{--canvas:#1e211d;--paper:#292d28;--ink:#f4efe4;--muted:#c3bbad;--forest:#a8c4a4;--line:#4b5148;--danger:#ef9b8e}.primary{background:#5e785c;color:white}}

/* Admin operations ledger */
.admin-page .shell{width:min(1480px,100%);padding:22px clamp(16px,3vw,46px) 56px}
.admin-page .top{margin-bottom:14px}
.admin-page .shell>nav{margin-bottom:20px}
.admin-page main{padding:0;border:0;background:transparent;box-shadow:none}
.admin-console{overflow:hidden;border:1px solid var(--line);border-radius:26px;background:var(--paper);box-shadow:0 28px 80px rgb(64 81 62/.11)}
.admin-masthead{display:flex;gap:28px;align-items:flex-start;justify-content:space-between;padding:36px 38px 30px;border-bottom:1px solid var(--line)}
.admin-masthead h1,.admin-auth-card h1{font-family:Iowan Old Style,"Songti SC",serif;font-size:clamp(2.35rem,5vw,4.8rem);font-weight:600;letter-spacing:-.06em}
.admin-intro{max-width:680px;margin:14px 0 0;color:var(--muted)}
.admin-kicker,.admin-eyebrow{margin:0 0 8px;font-family:ui-monospace,"SFMono-Regular",monospace;font-size:.68rem;font-weight:750;letter-spacing:.16em;color:var(--forest)}
.admin-role{flex:none;padding:9px 13px;border:1px solid var(--forest);border-radius:999px;font-size:.78rem;font-weight:750;color:var(--forest)}
.admin-nav{display:flex;gap:0;overflow-x:auto;padding:0 28px;border-bottom:1px solid var(--line)}
.admin-nav-item{position:relative;min-width:max-content;padding:17px 18px;border:0;border-radius:0;background:transparent;color:var(--muted);font-weight:700}
.admin-nav-item[aria-selected="true"]{color:var(--ink)}
.admin-nav-item[aria-selected="true"]::after{content:"";position:absolute;right:17px;bottom:-1px;left:17px;height:3px;background:var(--forest)}
.admin-surface{min-height:520px;padding:34px 38px 44px}
.admin-section-heading{display:flex;gap:24px;align-items:flex-end;justify-content:space-between;margin-bottom:26px}
.admin-section-heading h2{margin:0;font-family:Iowan Old Style,"Songti SC",serif;font-size:2.25rem;font-weight:600;letter-spacing:-.04em}
.admin-section-heading>p,.admin-section-heading>div>p:last-child{max-width:640px;margin:8px 0 0;color:var(--muted)}
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);border-left:1px solid var(--line)}
.metric-card{position:relative;min-height:210px;padding:22px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.metric-card:nth-child(3n+2){background:color-mix(in srgb,var(--forest) 5%,var(--paper))}
.metric-index{font-family:ui-monospace,"SFMono-Regular",monospace;font-size:.7rem;color:var(--muted)}
.metric-card p{margin:32px 0 4px;font-size:.92rem;font-weight:700}
.metric-card strong{display:block;font-family:Iowan Old Style,"Songti SC",serif;font-size:3.4rem;font-weight:500;line-height:1}
.metric-card small{display:block;margin-top:16px;line-height:1.45}
.admin-search{display:flex;gap:8px;align-items:center;min-width:min(100%,460px)}
.admin-search input{width:100%;min-width:260px;padding:11px 13px;border:1px solid var(--line);border-radius:12px;background:var(--canvas);color:var(--ink);font:inherit}
.admin-search input:focus{outline:2px solid var(--forest);outline-offset:2px}
.admin-table-wrap{overflow:auto;border:1px solid var(--line);border-radius:16px}
.admin-table{width:100%;border-collapse:collapse;font-size:.83rem}
.admin-table th{padding:13px 14px;border-bottom:1px solid var(--line);background:var(--canvas);text-align:left;white-space:nowrap;color:var(--muted)}
.admin-table td{padding:14px;border-bottom:1px solid var(--line);vertical-align:top}
.admin-table tr:last-child td{border-bottom:0}
.admin-table code,.pair-row code,.audit-row code,.dialog-pair-facts code,.event-row code{font-family:ui-monospace,"SFMono-Regular",monospace;font-size:.74rem;overflow-wrap:anywhere}
.status-badge{display:inline-flex;padding:5px 8px;border:1px solid var(--line);border-radius:999px;font-family:ui-monospace,"SFMono-Regular",monospace;font-size:.68rem;font-weight:700}
.status-badge[data-status="active"],.status-badge[data-status="succeeded"]{border-color:var(--forest);color:var(--forest)}
.status-badge[data-status="pending"],.status-badge[data-status="reviewing"]{border-color:#a77b37;color:#8c6328}
.status-badge[data-status="ended"],.status-badge[data-status="conflict"]{color:var(--muted)}
.admin-pagination{display:flex;justify-content:flex-end;margin-top:18px}
button:disabled{cursor:not-allowed;opacity:.42}
.pair-ledger{display:grid;gap:14px}
.pair-row{position:relative;padding:20px;border:1px solid var(--line);border-radius:18px;background:var(--canvas)}
.pair-row-title{display:flex;gap:16px;align-items:center;justify-content:space-between}
.pair-row-title>div{display:grid;gap:5px}
.admin-label{display:block;margin-bottom:4px;font-family:ui-monospace,"SFMono-Regular",monospace;font-size:.62rem;font-weight:750;letter-spacing:.12em;color:var(--muted)}
.pair-members{display:grid;grid-template-columns:1fr auto 1fr;gap:14px;align-items:stretch;margin:20px 0}
.pair-member{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;padding:14px;border:1px solid var(--line);border-radius:14px;background:var(--paper)}
.pair-member>span{display:grid;width:28px;height:28px;place-items:center;border-radius:50%;background:var(--forest);font-size:.72rem;font-weight:800;color:var(--paper)}
.pair-member>strong{white-space:nowrap}
.pair-link{align-self:center;color:var(--muted)}
.pair-meta{display:flex;flex-wrap:wrap;gap:18px 34px;margin:0}
.pair-meta div{display:flex;gap:8px}.pair-meta dt{color:var(--muted)}.pair-meta dd{margin:0}
.admin-row-action{position:absolute;right:20px;bottom:18px}
.danger-solid{background:var(--danger);color:#fff}
.moderation-block+ .moderation-block{margin-top:36px;padding-top:30px;border-top:1px solid var(--line)}
.ledger-subhead{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.ledger-subhead h3{margin:0}.ledger-subhead span{font-family:ui-monospace,"SFMono-Regular",monospace;color:var(--muted)}
.report-row{display:grid;grid-template-columns:minmax(260px,.75fr) minmax(360px,1.25fr);gap:22px;padding:19px 0;border-top:1px solid var(--line)}
.report-copy p{margin:0 0 8px}.report-copy p:first-child{display:flex;gap:12px;justify-content:space-between}.report-copy span{font-size:.78rem;color:var(--muted)}
.report-controls label{display:grid;gap:6px;font-size:.8rem;color:var(--muted)}
.report-controls textarea{width:100%;min-height:70px;resize:vertical}
.report-actions{display:flex;flex-wrap:wrap;gap:7px;margin-top:8px}.report-actions button{padding:7px 9px;font-size:.76rem}
.event-row{display:grid;grid-template-columns:minmax(180px,.5fr) 1fr auto;gap:20px;padding:15px 0;border-top:1px solid var(--line);align-items:center}
.event-row>div{display:flex;gap:10px}.event-row span,.event-row time{color:var(--muted);font-size:.8rem}
.audit-ledger{border-top:1px solid var(--line)}
.audit-row{display:grid;grid-template-columns:150px minmax(130px,.55fr) 1fr 1fr auto;gap:18px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}
.audit-row time,.audit-row span{font-size:.78rem;color:var(--muted)}
.audit-row>div{min-width:0}.audit-row>div:nth-child(2){display:flex;gap:8px;flex-direction:column}.audit-row em{font-style:normal;color:var(--muted)}
.admin-state{display:grid;min-height:260px;place-content:center;place-items:center;text-align:center;color:var(--muted)}
.admin-state strong{font-family:Iowan Old Style,"Songti SC",serif;font-size:1.6rem;color:var(--ink)}
.admin-state p{margin:6px 0 16px}.admin-state.is-loading span{width:18px;height:18px;border:2px solid var(--line);border-top-color:var(--forest);border-radius:50%;animation:admin-spin .8s linear infinite}
@keyframes admin-spin{to{transform:rotate(360deg)}}
.admin-auth-card{max-width:620px;margin:80px auto;padding:42px;border:1px solid var(--line);border-radius:24px;background:var(--paper);text-align:center}
.admin-auth-card p:not(.admin-eyebrow){color:var(--muted)}
.admin-dialog{width:min(680px,calc(100% - 28px));max-height:90vh;padding:28px;border:1px solid var(--line);border-radius:22px;background:var(--paper);color:var(--ink);box-shadow:0 28px 90px rgb(32 36 30/.3)}
.admin-dialog::backdrop{background:rgb(30 33 29/.55)}
.dialog-dismiss{display:flex;justify-content:flex-end}.dialog-dismiss button{padding:3px 10px;border:0;background:transparent;font-size:1.6rem}
.admin-dialog h2{margin:0 0 12px;font-family:Iowan Old Style,"Songti SC",serif;font-size:2rem}
.dialog-warning{padding:14px;border-left:4px solid var(--danger);background:color-mix(in srgb,var(--danger) 7%,var(--paper))}
.dialog-pair-facts{display:grid;gap:8px;margin:20px 0}.dialog-pair-facts>div{display:grid;grid-template-columns:90px 1fr;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}
.dialog-pair-facts dt{color:var(--muted)}.dialog-pair-facts dd{display:flex;gap:12px;justify-content:space-between;min-width:0;margin:0}
.admin-dialog label{display:grid;gap:7px;margin-top:14px;font-weight:700}.admin-dialog textarea{min-height:100px;resize:vertical}
.dialog-actions{display:flex;gap:9px;justify-content:flex-end;margin-top:18px}

@media(max-width:980px){
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .admin-section-heading.has-search{align-items:stretch;flex-direction:column}
  .admin-search{min-width:0}
  .pair-members{grid-template-columns:1fr}.pair-link{display:none}
  .admin-row-action{position:static;margin-top:18px}
  .report-row{grid-template-columns:1fr}
  .audit-row{grid-template-columns:120px 1fr 1fr}.audit-row>div:nth-child(4){grid-column:2/4}
}
@media(max-width:640px){
  .admin-page .shell{padding:12px 10px 34px}.admin-page .top{padding:0 6px}
  .admin-console{border-radius:18px}.admin-masthead{padding:25px 20px 22px;flex-direction:column}.admin-role{align-self:flex-start}
  .admin-nav{padding:0 8px}.admin-nav-item{padding:14px 12px}.admin-nav-item[aria-selected="true"]::after{right:11px;left:11px}
  .admin-surface{min-height:430px;padding:25px 18px 34px}
  .admin-section-heading{align-items:flex-start;flex-direction:column}
  .metric-grid{grid-template-columns:1fr}.metric-card{min-height:165px}.metric-card p{margin-top:20px}
  .admin-search{width:100%;flex-direction:column;align-items:stretch}.admin-search input{min-width:0}
  .admin-table,.admin-table tbody,.admin-table tr,.admin-table td{display:block}.admin-table thead{display:none}.admin-table tr{padding:11px 14px;border-bottom:1px solid var(--line)}.admin-table td{display:grid;grid-template-columns:120px 1fr;padding:7px 0;border:0}.admin-table td::before{color:var(--muted)}.admin-table td:nth-child(1)::before{content:"用户 ID"}.admin-table td:nth-child(2)::before{content:"状态"}.admin-table td:nth-child(3)::before{content:"注册时间"}.admin-table td:nth-child(4)::before{content:"设备登记"}.admin-table td:nth-child(5)::before{content:"当前 pair"}.admin-table td:nth-child(6)::before{content:"有效照片"}.admin-table td:nth-child(7)::before{content:"过往小窗"}
  .pair-row-title{align-items:flex-start;flex-direction:column}.pair-member{grid-template-columns:auto 1fr}.pair-member strong{grid-column:2}.pair-meta{display:grid;gap:8px}
  .event-row{grid-template-columns:1fr}.audit-row{grid-template-columns:1fr;gap:8px}.audit-row>div:nth-child(4){grid-column:auto}
  .dialog-pair-facts>div{grid-template-columns:1fr}.dialog-pair-facts dd{flex-direction:column}.dialog-actions{flex-direction:column-reverse}.dialog-actions button{width:100%}
}
@media(prefers-reduced-motion:reduce){.admin-state.is-loading span{animation:none}}