/* V51-K 同课程选师比较（no-JS 可用；390–1440 响应式；键盘焦点可见；打印友好） */
.fc51{--fc51-ink:#163c3a;--fc51-muted:#586a66;--fc51-paper:#fbfaf6;--fc51-line:#d9ded6;--fc51-accent:#b36b48;--fc51-soft:#eef1e9;color:var(--fc51-ink);overflow-wrap:anywhere;padding-bottom:70px}
.fc51 a:focus-visible,.fc51 button:focus-visible,.fc51 input:focus-visible,.fc51 select:focus-visible,.fc51 summary:focus-visible{outline:3px solid var(--fc51-accent);outline-offset:3px}
.fc51 .eyebrow{font-size:12px;letter-spacing:.12em;color:var(--fc51-muted)}
.fc51 h1,.fc51 h2,.fc51 h3,.fc51 p{max-width:100%}
.fc51 .page-title{margin:26px 0 8px}
.fc51 .intro{max-width:72ch;line-height:1.8;color:var(--fc51-muted)}

.fc51-toplinks{display:flex;flex-wrap:wrap;gap:16px;margin:14px 0 0}
.fc51-context{display:flex;flex-wrap:wrap;gap:16px;margin:18px 0 0;padding:14px 18px;border:1px solid var(--fc51-line);border-radius:6px;background:var(--fc51-soft)}

.fc51-course-form{display:flex;flex-wrap:wrap;gap:14px;align-items:end;margin:30px 0 0;padding:22px;border:1px solid var(--fc51-line);border-radius:6px;background:var(--fc51-soft)}
.fc51-field{min-width:min(420px,100%);flex:1}
.fc51-field label{display:block;font-size:13px;font-weight:600;margin-bottom:8px;color:var(--fc51-ink)}
.fc51-field select{width:100%;min-height:44px;padding:9px 12px;border:1px solid var(--fc51-line);border-radius:4px;background:#fff;color:var(--fc51-ink);font-size:15px;line-height:1.4}
.fc51-submit{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:16px}
.fc51-submit .button{min-height:44px;white-space:nowrap}
.fc51-course-form .fc51-submit{margin-top:0}

.fc51-teacher-form{margin:22px 0 0;padding:22px;border:1px solid var(--fc51-line);border-radius:6px;background:var(--fc51-paper)}
.fc51-roster{border:0;margin:0;padding:0}
.fc51-roster legend{font-size:17px;font-weight:700;padding:0;margin-bottom:8px}
.fc51-hint{margin:0 0 14px;font-size:13px;line-height:1.7;color:var(--fc51-muted)}
.fc51-roster-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.fc51-check{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;border:1px solid var(--fc51-line);border-radius:6px;background:#fff;cursor:pointer;min-height:44px}
.fc51-check:has(input:checked){border-color:var(--fc51-accent);background:#faf3ec}
.fc51-check input{margin-top:4px;width:18px;height:18px;flex:none}
.fc51-check-body{display:flex;flex-direction:column;gap:6px;min-width:0}
.fc51-check-name{font-weight:600;font-size:15px}
.fc51-check-tags{display:flex;flex-wrap:wrap;gap:6px}

.fc51-tag{display:inline-flex;align-items:center;min-height:26px;padding:2px 10px;border-radius:30px;border:1px solid var(--fc51-line);font-size:12px;color:var(--fc51-muted);background:#fff}
.fc51-basis-obs{border-color:#7d9b86;color:#2f5240;background:#eef4ec}
.fc51-basis-sched{border-color:#a8b6c8;color:#3c4f66;background:#eef2f7}
.fc51-ungraded{border-style:dashed}
.fc51-historical{border-color:#cbb98f;color:#6b5a2e;background:#faf5e8}
.fc51-retired{border-color:#cbb98f;color:#6b5a2e;background:#faf5e8}

.fc51-teachers{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;margin:34px 0 0}
.fc51-teacher{border:1px solid var(--fc51-line);border-radius:6px;background:var(--fc51-paper);padding:22px;display:flex;flex-direction:column;gap:10px;min-width:0}
.fc51-teacher h3{font-size:19px;margin:0}
.fc51-tags{display:flex;flex-wrap:wrap;gap:7px;margin:0}
.fc51-headline{margin:0;font-size:15px;font-weight:600;line-height:1.6}
.fc51-scope{margin:0;font-size:13px;line-height:1.7;color:var(--fc51-muted)}
.fc51-course-obs{border-left:3px solid #7d9b86;padding:6px 0 6px 12px;display:flex;flex-direction:column;gap:6px}
.fc51-course-obs p{margin:0;font-size:14px;line-height:1.7}
.fc51-basis{margin:0;font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--fc51-muted)}
.fc51-actions{margin-top:auto;display:flex;flex-wrap:wrap;gap:14px}
.fc51-actions .text-link,.fc51-actions a{display:inline-flex;align-items:center;min-height:44px}

.fc51-kind{margin:38px 0 0}
.fc51-kind>h2{font-size:21px;margin:0 0 14px;padding-top:18px;border-top:1px solid var(--fc51-line)}
.fc51-cells{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.fc51-cell{border:1px solid var(--fc51-line);border-radius:6px;background:#fff;padding:20px;min-width:0;display:flex;flex-direction:column;gap:14px}
.fc51-cell h3{font-size:15px;margin:0;color:var(--fc51-muted)}
.fc51-scope-course{border-left:3px solid #7d9b86;padding-left:12px}
.fc51-scope-overall{border-left:3px solid var(--fc51-line);padding-left:12px}
.fc51-group h4{font-size:15px;margin:8px 0 6px}
.fc51-group-summary{margin:0 0 8px;font-size:13px;line-height:1.7;color:var(--fc51-muted)}
.fc51-detail-grid{display:flex;flex-direction:column;gap:8px}
.fc51-detail-grid details{border:1px solid var(--fc51-line);border-radius:4px;background:var(--fc51-paper);padding:10px 12px}
.fc51-detail-grid summary{cursor:pointer;font-weight:600;font-size:14px;min-height:28px}
.fc51-detail-grid details p{margin:8px 0 2px;font-size:14px;line-height:1.75}
.fc51-none{margin:0;font-size:13px;color:var(--fc51-muted)}

.fc51-cohorts{margin:44px 0 0}
.fc51-cohorts>h2{font-size:21px;margin:0 0 10px;padding-top:18px;border-top:1px solid var(--fc51-line)}
.fc51-teacher-cohorts{margin:20px 0 0;padding:20px;border:1px solid var(--fc51-line);border-radius:6px;background:var(--fc51-paper)}
.fc51-teacher-cohorts h3{font-size:17px;margin:0 0 6px}
.fc51-teacher-cohorts h4{font-size:14px;margin:16px 0 8px;color:var(--fc51-muted)}
.fc51-advisor{margin:0;font-size:13px;color:var(--fc51-muted)}
.fc51-upcoming,.fc51-progress,.fc51-ended{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.fc51-upcoming li,.fc51-progress li,.fc51-ended li{border:1px solid var(--fc51-line);border-radius:4px;background:#fff;padding:12px 14px}
.fc51-teacher-cohorts li p{margin:0;font-size:14px;line-height:1.7}
.fc51-shared{display:block;font-size:12px;color:var(--fc51-muted);margin-top:4px}
.fc51-empty-upcoming{font-size:13px;color:var(--fc51-muted)}
.fc51-archive{margin:16px 0 0}
.fc51-archive summary{cursor:pointer;font-size:14px;font-weight:600;min-height:32px}

.fc51-empty{margin:26px 0 10px}
.fc51-empty .actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}
.fc51-empty .button{min-height:44px}
.fc51-source{margin:44px 0 0;padding-top:18px;border-top:1px solid var(--fc51-line)}
.fc51-source h2{font-size:16px;margin:0 0 10px}
.fc51-source p{font-size:13px;line-height:1.8;color:var(--fc51-muted);margin:0 0 8px}

@media(max-width:1100px){
 .fc51-roster-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:640px){
 .fc51-course-form{flex-direction:column;align-items:stretch;padding:18px}
 .fc51-course-form .fc51-submit{margin-top:4px}
 .fc51-course-form .fc51-submit .button{width:100%}
 .fc51-roster-grid{grid-template-columns:1fr}
 .fc51-teacher-form{padding:18px}
 .fc51-teachers,.fc51-cells{grid-template-columns:1fr}
 .fc51-cell,.fc51-teacher{padding:18px 16px}
 .fc51-submit{align-items:stretch;flex-direction:column}
 .fc51-submit .button{text-align:center}
}
@media print{
 .fc51-course-form,.fc51-teacher-form,.fc51-toplinks,.fc51-context{display:none}
 .fc51-cells,.fc51-teachers{grid-template-columns:repeat(2,minmax(0,1fr))}
 .fc51-detail-grid details{break-inside:avoid}
}