:root{--paper:#fffcf7;--ink:#292724;--muted:#716c66;--border:#ded9d1;--brand:#f26b1f;color:var(--ink);background:var(--paper);font-family:PingFang SC,Microsoft YaHei,sans-serif}.activity-history article{border-top:1px solid var(--border);padding:14px 0}.activity-history p,.activity-history h3,.activity-history small{white-space:pre-wrap;overflow-wrap:anywhere}.activity-history nav{flex-wrap:wrap;align-items:center;gap:18px;display:flex}*{box-sizing:border-box}body{margin:0}header{border-bottom:1px solid var(--border);height:90px;color:var(--muted);align-items:center;gap:22px;padding:0 7%;display:flex}.brand{color:var(--ink);font-size:24px;font-weight:700}main{grid-template-columns:1fr 390px;align-items:center;gap:80px;max-width:1200px;min-height:calc(100vh - 160px);margin:auto;padding:80px 7%;display:grid}h1{letter-spacing:.02em;margin:0 0 22px;font-size:clamp(32px,4vw,48px);line-height:1.55}h2{margin:0 0 12px;font-size:24px}p{color:var(--muted);line-height:1.9}.work-list{border-left:3px solid var(--border);flex-direction:column;gap:18px;margin-top:38px;padding-left:18px;display:flex}.panel{background:#efede6;border-radius:12px;padding:36px}form{gap:20px;margin-top:28px;display:grid}label{gap:9px;font-size:15px;display:grid}input,button{font:inherit;border-radius:6px;padding:13px}input{background:var(--paper);border:1px solid var(--border);width:100%}button{background:var(--brand);color:var(--ink);cursor:pointer;border:0;font-weight:600}button:disabled{opacity:.65;cursor:wait}button:focus-visible,input:focus-visible{outline-offset:3px;outline:3px solid #287758}.error{color:#a32b24;margin:0}footer{color:var(--muted);padding:20px 7%;font-size:13px}@media (max-width:760px){header{height:72px;padding:0 24px}main{flex-direction:column;align-items:stretch;gap:30px;min-height:0;padding:32px 24px;display:flex}.introduction h1{font-size:30px}.introduction h1 br,.introduction p,.work-list{display:none}.panel{padding:26px}footer{padding:26px 24px}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}.classroom-header{height:76px;padding:0 max(24px,5vw)}.classroom-header a{color:inherit;text-decoration:none}.classroom-header form{margin:0 0 0 auto;display:block}.secondary{border:1px solid var(--border);background:0 0;font-weight:500}.classroom-main{background:#f7f5f0;max-width:1360px;min-height:calc(100vh - 76px);padding:40px max(24px,5vw);display:block}.group-card .group-advice{overflow-wrap:anywhere;margin:16px 0;font-size:14px;line-height:1.8}.classroom-task-section{margin-top:32px}.classroom-tasks{background:var(--paper);border:1px solid var(--border);border-radius:10px;margin:14px 0;padding:18px}.classroom-tasks summary{cursor:pointer;overflow-wrap:anywhere;font-weight:600}.classroom-tasks label{flex-wrap:wrap;align-items:center;gap:12px;margin-top:20px;display:flex}.classroom-tasks select{max-width:100%;font:inherit;padding:10px}.classroom-task-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:22px;display:grid}.classroom-task-grid article{overflow-wrap:anywhere;border-top:1px solid var(--border);min-width:0;padding-top:14px;line-height:1.8}.classroom-task-grid h3{font-size:18px}.classroom-task-grid ul,.classroom-task-grid ol{padding-left:22px}.classroom-task-role,.classroom-task-note{color:var(--muted);font-size:12px;line-height:1.8}.classroom-title{justify-content:space-between;align-items:center;gap:24px;margin-bottom:28px;display:flex}.classroom-title h1{margin:8px 0;font-size:30px;line-height:1.5}.eyebrow{letter-spacing:.08em;font-size:12px}.classroom-title p{margin:4px 0}.text-link{color:var(--ink);white-space:nowrap;font-size:13px}.classroom-summary{background:var(--paper);border:1px solid var(--border);border-radius:10px;grid-template-columns:repeat(3,1fr);margin:24px 0 30px;display:grid}.classroom-summary div{align-items:center;gap:20px;padding:20px 24px;display:flex}.classroom-summary strong{color:var(--brand);font-size:30px}.classroom-summary span{color:var(--muted);font-size:13px}.group-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;display:grid}.group-card{background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:23px}.group-card-top{justify-content:space-between;font-size:12px;display:flex}.light{align-items:center;gap:7px;display:inline-flex}.light:before{content:"";background:#478464;border-radius:50%;width:7px;height:7px}.light-red:before{background:#ad4035}.light-yellow:before{background:#bc8c37}.group-card p{margin:25px 0 4px;font-size:12px}.group-card h2{font-size:22px}.group-progress{color:var(--muted);gap:8px;margin:22px 0;font-size:12px;display:grid}.group-card a{color:var(--ink);border-top:1px solid var(--border);justify-content:space-between;padding-top:15px;font-size:13px;text-decoration:none;display:flex}.classroom-note,.form-note{font-size:12px;line-height:1.8}.classroom-note{margin-top:25px}.project-columns{grid-template-columns:1fr 1fr;gap:24px;display:grid}.project-section{background:var(--paper);border:1px solid var(--border);border-radius:10px;min-width:0;margin-bottom:24px;padding:26px}.project-section h2{font-size:20px}.project-section h2 small{color:var(--muted);font-size:12px;font-weight:400}.project-form{gap:17px;margin-top:20px}.project-form textarea,.project-form select{font:inherit;border:1px solid var(--border);resize:vertical;background:var(--paper);border-radius:6px;width:100%;padding:12px}.project-form input[type=file]{padding:10px;font-size:13px}.project-form button{justify-self:start}.success-message{color:#23634b;background:#eef5ef;padding:14px;font-size:14px}.photo-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;display:grid}.photo-grid figure{margin:0}.photo-grid img{object-fit:contain;background:#f0eee8;border-radius:6px;width:100%;height:180px;display:block}.photo-grid figcaption{color:var(--muted);overflow-wrap:anywhere;margin-top:9px;font-size:12px;line-height:1.7}.artifact-list>details{border-top:1px solid var(--border);padding:16px 0}.artifact-list summary{cursor:pointer;justify-content:space-between;gap:18px;font-size:13px;display:flex}.artifact-list summary span{color:var(--muted);font-size:12px}.artifact-list details>div{overflow-wrap:anywhere;margin:14px 0;font-size:13px}.artifact-list p{font-size:13px}.classroom-empty{border:1px solid var(--border);border-radius:10px;padding:40px}@media (max-width:900px){.group-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.project-columns{grid-template-columns:1fr}.classroom-summary div{gap:10px;padding:16px}}@media (max-width:600px){.classroom-header{gap:14px;padding:0 20px}.classroom-header .brand{font-size:20px}.classroom-header form button{padding:8px 10px;font-size:12px}.classroom-main{padding:24px 18px}.classroom-title{align-items:flex-start;gap:10px}.classroom-title h1{font-size:24px}.group-grid{grid-template-columns:1fr}.classroom-summary div{gap:4px;padding:15px 12px;display:grid}.classroom-summary strong{font-size:26px}.classroom-summary span{font-size:11px}.project-section{padding:20px}.photo-grid{grid-template-columns:1fr 1fr}.photo-grid img{height:130px}.artifact-list summary{gap:5px;display:grid}.project-form button{width:100%}}.classroom-live{color:var(--muted);margin-top:30px;font-size:12px;display:block}.patrol-form{max-width:650px}.patrol-form label{margin:16px 0;font-size:12px;display:block}.patrol-form textarea,.patrol-form select{border:1px solid var(--border);background:var(--paper);width:100%;color:var(--ink);font:inherit;border-radius:7px;margin-top:8px;padding:12px;display:block}.patrol-form textarea{resize:vertical;min-height:90px}.patrol-fields{grid-template-columns:1fr 1fr;gap:18px;display:grid}.patrol-form button{width:auto}.patrol-history article{border-top:1px solid var(--border);margin-top:20px;padding:20px 0;font-size:13px}@media (max-width:650px){.patrol-fields{grid-template-columns:1fr;gap:0}}.project-form select{border:1px solid var(--border);background:var(--paper);width:100%;color:var(--ink);font:inherit;border-radius:7px;margin-top:8px;padding:12px}.photo-checklist details{border-top:1px solid var(--border);padding:18px 0}.photo-checklist summary{cursor:pointer;font-size:14px;font-weight:600}.photo-checklist article{padding:14px 0;font-size:12px}.photo-checklist h3{font-size:14px}.photo-checklist ul{padding-left:20px;line-height:1.9}.project-form .run-observation{align-items:flex-start;gap:.6rem;display:flex}.project-form .run-observation input{flex-shrink:0;width:auto;margin-top:.3rem}
