:root{--paper:#f6f7f3;--surface:#fff;--ink:#202b27;--muted:#69756f;--line:#dce3dc;--line-strong:#c5d0c8;--green:#176b50;--green-dark:#10543e;--green-pale:#e7f1eb;--amber:#a85b22;--red:#b33e36;--shadow:0 18px 48px rgb(32 43 39/7%);color-scheme:light;font-family:Avenir Next,Noto Sans SC,Microsoft YaHei,sans-serif;color:var(--ink);background:var(--paper)}*{box-sizing:border-box}html{min-width:320px;background:var(--paper)}body{margin:0;min-height:100vh;display:flex;flex-direction:column}.site-content{flex:1 1;min-width:0}.site-footer{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 24px;padding:18px 14px;border-top:1px solid var(--line);color:var(--muted);text-align:center;font-size:12px;line-height:1.6}.site-footer a{display:inline-flex;align-items:center;gap:6px;color:inherit;text-decoration:none}.site-footer img{flex-shrink:0;object-fit:contain}.site-footer a:hover{color:var(--green-dark);text-decoration:underline}button,input,select{font:inherit}button{color:inherit}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #89b9a0;outline-offset:2px}.site-header{height:76px;max-width:1120px;margin:0 auto;padding:0 28px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.brand{display:inline-flex;align-items:center;gap:11px;color:var(--ink);text-decoration:none}.brand-mark{width:36px;height:36px;display:grid;place-items:center;border-radius:3px;background:var(--green);color:#fff;font:20px/1 Songti SC,STSong,serif}.brand-name{display:grid;grid-gap:1px;gap:1px;font-size:16px;font-weight:700}.brand-note{color:var(--muted);font-size:9px;font-weight:600}.header-tools{display:flex;align-items:center;gap:18px}.header-label{color:var(--muted);font-size:13px}.header-action{padding:8px 12px;border:1px solid var(--line-strong);border-radius:4px;background:transparent;cursor:pointer;font-size:13px}.header-action:hover{border-color:var(--green);color:var(--green)}.page{width:min(100% - 56px,1064px);margin:0 auto;padding:42px 0 72px}.page-narrow{max-width:460px;padding-top:clamp(56px,11vh,110px)}.page-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:28px}.eyebrow{margin:0 0 10px;color:var(--green);font-size:11px;font-weight:700;text-transform:uppercase}h1,h2,p{margin-top:0}h1{margin-bottom:0;font-family:Songti SC,STSong,"Noto Serif CJK SC",serif;font-size:31px;line-height:1.28;font-weight:600}.title-with-field{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.title-select{min-width:150px;min-height:42px;padding:8px 30px 8px 11px;border:1px solid var(--line-strong);border-radius:4px;background:var(--surface);color:var(--ink);font-size:14px}.candidate-dialog-backdrop{position:fixed;inset:0;z-index:20;display:grid;place-items:center;padding:22px;background:rgba(32,43,39,.42)}.candidate-dialog{width:min(100%,430px);display:grid;grid-gap:14px;gap:14px;padding:25px;border:1px solid var(--line);border-top:3px solid var(--green);border-radius:5px;background:var(--surface);box-shadow:0 24px 70px rgba(32,43,39,.25)}.candidate-dialog h2{margin:0;font-size:21px}.candidate-list{display:grid;grid-gap:8px;gap:8px}.candidate-option{display:grid;grid-gap:4px;gap:4px;padding:13px 14px;border:1px solid var(--line-strong);border-radius:4px;background:var(--surface);text-align:left;cursor:pointer}.candidate-option:hover{border-color:var(--green);background:var(--green-pale)}.candidate-option span{color:var(--muted);font-size:13px}h2{margin-bottom:7px;font-size:17px;font-weight:650}.heading-note{margin:8px 0 0;color:var(--muted);font-size:14px;line-height:1.6}.rule-title{display:flex;align-items:center;gap:10px}.rule-title:after{width:30px;height:1px;content:"";background:var(--green)}.login-form{padding:27px;border:1px solid var(--line);border-top:3px solid var(--green);border-radius:5px;background:var(--surface);box-shadow:var(--shadow)}.login-form>.field{margin-top:23px}.role-switch{display:grid;grid-template-columns:repeat(3,1fr);padding:4px;border:1px solid var(--line);border-radius:4px;background:#f0f3ef}.role-option{min-height:42px;padding:8px 6px;border:0;border-radius:3px;background:transparent;color:var(--muted);cursor:pointer;font-size:14px}.role-option[aria-pressed=true]{background:var(--surface);color:var(--green-dark);box-shadow:0 1px 4px rgba(32,43,39,.12);font-weight:700}.field{display:grid;grid-gap:8px;gap:8px;color:#3b4842;font-size:13px;font-weight:650}.field input,.field select,.select-control{width:100%;min-height:46px;padding:10px 12px;border:1px solid var(--line-strong);border-radius:4px;background:var(--surface);color:var(--ink);font-size:15px}.field input::placeholder{color:#9aa59f}.dropdown-field{position:relative;min-width:0}.dropdown-field-open{z-index:5}.dropdown-trigger{width:100%;height:46px;min-height:46px;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 12px;border:1px solid var(--line-strong);border-radius:4px;background:var(--surface);color:var(--ink);cursor:pointer;font-size:15px;text-align:left;min-width:0}.dropdown-trigger:hover,.dropdown-trigger[aria-expanded=true]{border-color:var(--green)}.dropdown-trigger-text{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:400}.dropdown-placeholder{color:#9aa59f}.dropdown-chevron{display:block;width:16px;height:16px;flex:0 0 16px;color:var(--muted);transform-origin:center;transition:transform .14s ease}.dropdown-trigger[aria-expanded=true] 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dropdown-menu-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.danger-button,.primary-button,.secondary-button{min-height:44px;display:inline-flex;justify-content:center;align-items:center;gap:8px;padding:10px 16px;border:1px solid transparent;border-radius:4px;cursor:pointer;font-size:14px;font-weight:650;transition:background-color .12s ease,border-color .12s ease,color .12s ease}.primary-button{background:var(--green);color:#fff}.primary-button:hover{background:var(--green-dark)}.primary-button:disabled{cursor:wait;opacity:.6}.secondary-button{border-color:var(--line-strong);background:var(--surface);color:var(--ink)}.secondary-button:hover{border-color:var(--green);color:var(--green-dark)}.danger-button{border-color:#e8c9c5;background:#fff;color:var(--red)}.danger-button:hover{border-color:var(--red);background:#fff8f7}.wide-button{width:100%;margin-top:21px}.form-error,.form-success{margin:14px 0 0;padding:11px 12px;border-radius:3px;font-size:13px;line-height:1.5}.form-error{border-left:3px solid var(--red);background:#fcf0ee;color:#8f302a}.form-success{border-left:3px solid var(--green);background:var(--green-pale);color:var(--green-dark)}.camera-layout{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(270px,.85fr);grid-gap:28px;gap:28px;align-items:start}.camera-column{min-width:0}.viewfinder{position:relative;min-height:300px;aspect-ratio:4/3;display:grid;place-items:center;overflow:hidden;border-radius:4px;background:#202b27;color:#e6eee9}.camera{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.viewfinder:after,.viewfinder:before{position:absolute;z-index:1;width:26px;height:26px;content:"";pointer-events:none}.viewfinder:before{top:18px;left:18px;border-top:2px solid #9bd1b2;border-left:2px solid #9bd1b2}.viewfinder:after{right:18px;bottom:18px;border-right:2px solid #9bd1b2;border-bottom:2px solid 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0;color:var(--muted);font-size:12px;line-height:1.6}.section-line{height:1px;margin:20px 0;border:0;background:var(--line)}.list-meta{color:var(--muted);font-size:13px;white-space:nowrap}.list-tabs{display:inline-flex;gap:4px;padding:3px;border:1px solid var(--line);border-radius:5px;background:#f1f4f1}.list-tab{padding:7px 13px;border:0;border-radius:3px;background:transparent;color:var(--muted);font:inherit;font-size:13px;cursor:pointer}.list-tab-active{background:var(--surface);color:var(--green-dark);box-shadow:0 1px 4px rgba(32,43,39,.12);font-weight:700}.records-list{border-top:1px solid var(--line-strong)}.record{min-height:112px;display:grid;grid-template-columns:88px minmax(0,1fr) auto;grid-gap:18px;gap:18px;align-items:center;padding:14px 4px;border-bottom:1px solid 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var(--green);border-radius:5px;background:var(--surface);box-shadow:var(--shadow)}.edit-dialog .eyebrow,.edit-dialog h2{margin-bottom:0}.edit-dialog .student-actions{justify-content:flex-end;margin-top:4px}@media (max-width:760px){.site-header{height:66px;padding:0 18px}.page{width:min(100% - 36px,600px);padding:30px 0 48px}.page-narrow{padding-top:48px}.page-heading{margin-bottom:21px}.camera-layout{grid-template-columns:1fr;gap:26px}.manual-panel{padding-top:0}.admin-form-grid,.student-filters{grid-template-columns:repeat(2,minmax(0,1fr))}.filter-reset{justify-self:start}.admin-submit{grid-column:1/-1}.import-form{align-items:stretch;flex-direction:column;gap:14px}.import-actions{flex-basis:auto}}@media (max-width:480px){.site-header{padding:0 14px}.header-tools{gap:10px}.header-label{display:none}.page{width:min(100% - 28px,440px);padding-top:24px}.page-narrow{padding-top:42px}h1{font-size:27px}.login-form{padding:21px 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