.map-node.root{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:12px 15px}
.map-node.root small{display:block;color:#dff5ff;font-size:11px;line-height:1.35;margin-bottom:5px}
.map-node.root b{color:#fff;font-size:16px;line-height:1.35}
.question-review-panel{margin-top:18px}.review-list{display:grid;gap:12px}.review-card{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px;padding:18px;border:1px solid var(--line);border-radius:8px;background:#fbfdff}.review-card h3{margin:10px 0;font-size:16px}.review-meta{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:12px}.review-card ol{list-style:none;padding:0;margin:10px 0;display:grid;grid-template-columns:1fr 1fr;gap:8px}.review-card li{display:flex;gap:8px;padding:8px 10px;background:#fff;border:1px solid var(--line);border-radius:6px}.review-card li b{color:var(--blue)}.review-card p{margin:6px 0;color:#52667a;font-size:13px}.review-actions{display:flex;gap:7px;align-items:flex-start}.question-option-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}
.question-library-panel{margin-top:18px}.question-library-panel .panel-title{align-items:flex-start}.section-note{margin:4px 0 0;color:var(--muted);font-size:12px}.published-question{background:#fff}.published-label{color:#1b936b;background:#e8f8f0;border-radius:5px;padding:3px 6px}
.wechat-shell{height:min(690px,calc(100vh - 190px));min-height:520px;display:grid;grid-template-columns:330px minmax(0,1fr);overflow:hidden;border:1px solid #d8e1ea;background:#fff;box-shadow:var(--shadow)}.wechat-contacts{background:#f5f7f9;border-right:1px solid #dfe5eb;overflow:auto}.class-tabs{display:flex;gap:6px;padding:12px;border-bottom:1px solid #dfe5eb;overflow-x:auto}.class-tab{white-space:nowrap;padding:7px 9px;background:#e8edf2;border-radius:5px;font-size:12px}.class-tab.active{background:#3478f6;color:#fff}.class-tab span{margin-left:5px;opacity:.72}.contact-list{display:grid}.contact{width:100%;display:grid;grid-template-columns:42px minmax(0,1fr) auto;gap:10px;align-items:center;padding:13px 14px;border-radius:0;background:transparent;text-align:left;border-bottom:1px solid #e4e9ee}.contact:hover,.contact.active{background:#fff}.contact-avatar,.chat-avatar{width:40px;height:40px;border-radius:6px;display:grid;place-items:center;background:#3478f6;color:#fff;font-weight:800}.contact b,.contact small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.contact small{color:var(--muted);font-size:11px;margin-top:4px}.contact time{font-size:10px;color:#9aa7b3}.wechat-chat{min-width:0;display:flex;flex-direction:column;background:#eef1f4}.wechat-chat>header{height:66px;display:flex;align-items:center;gap:11px;padding:10px 18px;background:#f8fafb;border-bottom:1px solid #dfe5eb}.wechat-chat>header b,.wechat-chat>header small{display:block}.wechat-chat>header small{color:var(--muted);font-size:11px;margin-top:3px}.wechat-history{flex:1;overflow:auto;padding:22px;display:flex;flex-direction:column;gap:14px}.chat-row{display:flex;align-items:flex-start;gap:10px;max-width:78%}.chat-row.mine{align-self:flex-end;flex-direction:row-reverse}.chat-avatar{width:36px;height:36px;flex:0 0 36px;background:#19a974}.chat-row.theirs .chat-avatar{background:#3478f6}.chat-message{min-width:0}.chat-time{text-align:left;color:#8997a5;font-size:10px;margin:0 0 4px}.chat-row.mine .chat-time{text-align:right}.chat-bubble{position:relative;padding:10px 13px;border-radius:5px;background:#fff;line-height:1.65;white-space:pre-wrap;overflow-wrap:anywhere;box-shadow:0 1px 2px #20354a12}.chat-row.mine .chat-bubble{background:#95ec69}.chat-delete{display:block;padding:3px 0;margin-top:3px;background:transparent;color:#8c98a4;font-size:10px}.chat-row.mine .chat-delete{margin-left:auto}.wechat-compose{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;padding:14px 16px;background:#fff;border-top:1px solid #dfe5eb}.wechat-compose textarea{height:76px;resize:none;border:1px solid #d8e1ea;border-radius:5px;padding:10px;outline:none}.wechat-compose textarea:focus{border-color:#6ca0f8}.wechat-compose button{align-self:end}.chat-empty{margin:auto;color:#8997a5;text-align:center}.chat-empty.large{font-size:14px}.student-chat{grid-template-columns:250px minmax(0,1fr)}
@media(max-width:820px){.wechat-shell,.student-chat{grid-template-columns:112px minmax(0,1fr);height:calc(100vh - 175px)}.class-tabs{display:grid}.contact{grid-template-columns:36px 1fr;padding:10px 8px}.contact time{display:none}.contact-avatar{width:36px;height:36px}.contact small{display:none}.review-card{grid-template-columns:1fr}.review-actions{flex-wrap:wrap}.review-card ol,.question-option-grid{grid-template-columns:1fr}.wechat-history{padding:14px 10px}.chat-row{max-width:92%}}