.v51-point-marker{position:absolute;transform:translate(-50%,-50%);border:2px solid #fff;background:var(--brand);color:white;min-width:26px;height:26px;padding:0;z-index:4;border-radius:50%;font-size:12px;line-height:22px}.v51-point-panel{margin-bottom:14px;padding:18px 16px}.v51-point-panel h2{font-size:18px}.v51-point-list{display:flex;gap:5px;flex-wrap:wrap;margin-bottom:15px}.v51-point-list button{font-size:11px;padding:6px 9px}.v51-file{display:flex;align-items:center;gap:8px;padding:12px 0;border-top:1px solid var(--line);flex-wrap:wrap}.v51-file>span{flex:1;min-width:150px;overflow-wrap:anywhere}.v51-file small{display:block}.v51-file button{font-size:11px;padding:6px 8px}#modal-body video,#modal-body audio,.v51-material-image{max-width:100%;max-height:55vh}.v51-point-panel .field{margin:12px 0}.v51-point-panel .section-head{margin-top:0;display:block}
.v51-assistant header{display:flex;align-items:center;gap:14px;margin-bottom:16px}.v51-assistant h2{font-size:19px;margin-bottom:3px}.v51-assistant-history{max-height:340px;overflow:auto;margin:16px 0}.v51-assistant-history p{font-size:13px}.v51-assistant form{margin:15px 0}.v51-permission{padding:11px 12px;background:var(--brand-soft);border-radius:8px;margin-bottom:14px;font-size:12px}.v51-assistant{padding:20px}
.v51-official,.v51-lecture-resources,.v51-flow{margin-top:24px}.v51-official-card{display:grid;grid-template-columns:160px 1fr;gap:20px;align-items:center}.v51-official-card img{width:160px;height:110px;object-fit:contain;background:var(--surface)}.v51-flow-stage{padding:20px;background:var(--brand-soft);border-radius:8px;margin:18px 0}.v51-flow-step{padding:15px 0;border-bottom:1px solid var(--line)}.v51-flow-step label{display:block;font-size:12px;margin:8px 0}.v51-flow-step input,.v51-flow-step select{width:100%;padding:9px;border:1px solid var(--line);border-radius:6px;background:var(--paper);color:var(--ink)}.v51-flow-step button{font-size:11px;padding:6px 10px}.yiwen-open .v51-assistant{display:none}@media(max-width:700px){.v51-official-card{grid-template-columns:1fr}.v51-official-card img{width:100%;height:140px}}
.v51-generated-image{width:100%;height:auto;max-height:330px;object-fit:contain;background:var(--surface)}.v51-review-original{max-width:100%;max-height:180px;object-fit:contain}.v51-image-comparison{display:grid;grid-template-columns:1fr 1fr;gap:20px}.v51-image-comparison figure{margin:0;background:var(--surface);padding:10px}.v51-image-comparison img{width:100%;height:220px;object-fit:contain}.v51-image-comparison figcaption{font-size:11px;margin-top:10px}.reflection-comparison .generated-visual img{width:100%;height:100%;object-fit:contain}.v51-creation-work{max-width:480px;margin-bottom:25px}.v51-free-prompt{padding:12px;background:var(--brand-soft)}@media(max-width:700px){.v51-image-comparison{grid-template-columns:1fr}.v51-image-comparison img{height:180px}}
.v51-my-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:25px 0}.v51-my-grid button{padding:25px;text-align:left}.v51-my-grid strong,.v51-my-grid small{display:block}.v51-my-grid strong{font-size:20px;margin-bottom:12px}.v51-reading-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.v51-reading-cards img{width:100%;height:180px;object-fit:contain;background:var(--surface);margin-bottom:15px}.v51-reading-cards h2{font-size:21px}.v51-scope-note{padding:15px;background:var(--brand-soft);border-radius:8px;margin:20px 0}.v51-reading-steps{display:flex;gap:14px;list-style:none;padding:0;margin:20px 0;flex-wrap:wrap;font-size:12px;color:var(--muted)}.v51-reading-steps .active{color:var(--brand);font-weight:600;border-bottom:2px solid var(--brand)}.v51-reading-steps .done{color:var(--brand)}.v51-account{font-size:12px;color:var(--muted)}@media(max-width:700px){.sidebar nav{gap:3px}.sidebar nav button{flex:1;font-size:11px;padding:9px 6px;justify-content:center}.v51-my-grid,.v51-reading-cards{grid-template-columns:1fr}.v51-account{display:none}.v51-reading-steps{gap:8px;font-size:10px}}
.v51-gallery-tabs{display:flex;gap:8px;margin:20px 0}.v51-gallery-filter{max-width:300px;margin:20px 0}.gallery-card>.v51-generated-image{height:220px;background:var(--surface)}.v51-exhibition{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--paper)}.v51-exhibition>header{display:flex;justify-content:space-between;padding:16px 22px;gap:15px;font-size:13px}#v51-panorama{height:430px;position:relative;overflow:hidden;background-image:url(exhibition-v51.svg);background-repeat:repeat-x;touch-action:pan-y;cursor:grab}.v51-hall-work{position:absolute;top:110px;transform:translateX(-50%);width:195px;background:#fffdf6;border:6px solid #8f8b77;padding:4px;border-radius:0;box-shadow:0 7px 15px #2223;text-align:center}.v51-hall-work img{height:120px;object-fit:cover}.v51-hall-work span{display:block;font-size:12px;padding:6px}.v51-hall-work small{display:block;font-size:10px}.v51-empty-hall{position:absolute;left:50%;top:45%;transform:translate(-50%,-50%);padding:15px 25px;background:#fffdf6df;max-width:80%;text-align:center}.v51-hall-controls{display:flex;align-items:center;justify-content:center;gap:15px;padding:15px;background:var(--surface)}.v51-hall-controls .field{margin:0;max-width:250px}.v51-hall-controls .field span{display:none}.v51-hall-controls input{max-width:100%}.v51-hall-guide{padding:22px;display:flex;gap:20px;align-items:start}.v51-hall-guide h3{margin:0}.v51-hall-guide p{font-size:13px;margin:8px 0}.v51-exhibition>small{display:block;padding:0 22px 20px}.v51-hall-controls output{min-width:42px;font-size:12px}@media(max-width:700px){#v51-panorama{height:350px}.v51-exhibition>header{display:block;font-size:12px}.v51-exhibition>header small{display:block;margin-top:5px}.v51-hall-controls{gap:8px;padding:12px}.v51-hall-controls button{padding:7px;font-size:10px;white-space:nowrap}.v51-hall-controls .field{width:100px}.v51-hall-work{top:90px;width:165px}.v51-hall-work img{height:100px}.v51-hall-guide{padding:18px;gap:12px}}
.v51-tutor-identity{width:66px;min-width:66px;margin:0;color:var(--brand)}.v51-tutor-identity svg{width:100%;height:auto}.v51-tutor-identity figcaption{font-size:9px;text-align:center;color:var(--muted)}
@media(max-width:700px){.v51-point-panel{padding:16px 14px;margin-bottom:12px}.v51-assistant{padding:16px 14px}.v51-assistant-history{max-height:260px}}

/* CSS批次2（2026-10-20）：作品鉴赏右侧教学助手分组。仅布局与展示组织；权限、门禁、数据字段与API不变。 */
.v51-next-step{background:var(--brand-soft);border:1px solid color-mix(in srgb,var(--brand) 28%,var(--line));border-radius:10px;padding:14px 16px;margin-bottom:14px}
.v51-next-step h2{font-size:15px;margin:0 0 6px}
.v51-next-step .v51-next-primary{font-size:13px;font-weight:600;margin:0 0 8px;line-height:1.7}
.v51-next-step ul{margin:0;padding-left:18px;font-size:11px;color:var(--muted);display:grid;gap:4px;line-height:1.7}
.v51-next-step small{display:block;margin-top:8px;font-size:10px;color:var(--muted)}
.v51-tool-group{border-radius:10px;padding:16px;margin-bottom:14px}
.v51-tool-group>.v51-group-title{font-size:15px;margin:0 0 4px}
.v51-tool-group>.v51-group-sub{font-size:11px;color:var(--muted);margin:0 0 12px}
.v51-tool-group>.v51-permission{margin-bottom:12px}
.v51-tool-group>.v51-point-panel{border:0;background:transparent;padding:0;margin:0}
.v51-tool-group>.v51-point-panel .section-head h2{font-size:15px}
.v51-tool-group>.v51-group-note{display:block;color:var(--muted);font-size:10px;margin-top:10px;border-top:1px dashed var(--line);padding-top:8px}
.v51-xiaoyi-group{margin-bottom:14px}
.v51-xiaoyi-group>#teaching-pet{margin-bottom:0}
.v51-xiaoyi-group>.companion-panel{margin-top:0}
.yiwen-open .v51-xiaoyi-group{display:none}
@media(max-width:700px){.v51-next-step{padding:12px 14px}.v51-tool-group{padding:14px 12px}.v51-xiaoyi-group{margin-bottom:12px}}

/* ── P7-PRODUCT-R2：教师快捷面板 / 学生作品状态 ── */
.v51-review-alert{margin:0 0 14px;padding:12px 16px;border:1px solid rgba(192,57,43,.35);background:#fdf3f2;border-radius:6px}
.v51-review-alert-link{color:#c0392b;font-weight:600;text-decoration:none}
.v51-review-alert-link:hover{text-decoration:underline}
.v51-teacher-task,.v51-work-row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--line,#d8dcd9);border-radius:6px;margin:0 0 10px;background:var(--paper,#fff)}
.v51-work-row>div:first-child{flex:1 1 auto;min-width:0}
.v51-work-row h3,.v51-teacher-task h3{margin:0 0 2px;font-size:15px}
.v51-task-meta{color:#667;font-size:12px;margin:2px 0 0}
.v51-task-actions{display:flex;gap:8px;flex-wrap:wrap;flex:0 0 auto}
.v51-task-btn{padding:6px 12px;border:1px solid var(--line,#c8cfcb);border-radius:4px;text-decoration:none;font-size:13px;color:inherit;background:var(--surface,#fff);white-space:nowrap}
.v51-task-btn.primary{background:#2e5c50;color:#fff;border-color:#2e5c50}
.v51-status-chip{flex:0 0 auto;padding:3px 10px;border-radius:10px;font-size:12px;font-weight:600}
.v51-status-pending{background:#fff4e0;color:#9a6b00}
.v51-status-approved{background:#e5f3e8;color:#1d6f42}
.v51-status-rejected{background:#fdeceb;color:#c0392b}
.v51-status-private{background:#eef1f0;color:#55606a}
.v51-review-note{margin:6px 0 0;padding:8px 10px;background:#fdeceb;border-radius:4px;font-size:13px}
.v51-panel-status{color:#667;padding:10px 0}
.v51-hint{color:#667;font-size:12px;margin:4px 0 0}
.v51-work-side{display:flex;flex-direction:column;align-items:flex-end;gap:8px}
.v51-nav-badge{margin-left:8px;padding:1px 7px;border-radius:9px;background:#c0392b;color:#fff;font-size:11px;font-style:normal;font-weight:700}

/* ── P7-PRODUCT-R4：课堂状态同步失败提示 ── */
.v51-sync-warn{margin:0 0 10px;padding:8px 12px;background:#fff4e0;color:#7b4b27;border-radius:6px;font-size:12px}