*{box-sizing:border-box}html,body,#app{height:100%;margin:0;width:100%;overflow-x:hidden}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:#fafafa;color:#222;font-size:14px}.app{max-width:100vw;overflow-x:hidden}button{font:inherit;cursor:pointer}textarea,input{font:inherit}.app{display:grid;grid-template-columns:260px 1fr;height:100vh}.sidebar{border-right:1px solid #e5e5e5;background:#fff;display:flex;flex-direction:column;min-width:0}.sidebar-header{padding:14px 16px;border-bottom:1px solid #eee;display:flex;align-items:center;gap:8px}.sidebar-header h1{margin:0;font-size:16px;font-weight:600}.sidebar-header .new-btn{margin-left:auto;border:1px solid #ddd;background:#fff;padding:4px 10px;border-radius:6px;font-size:13px}.sidebar-header .new-btn:hover{background:#f5f5f5}.doc-list{flex:1;overflow-y:auto;padding:6px}.doc-item{padding:8px 10px;border-radius:6px;cursor:pointer;margin-bottom:2px;font-size:13px;display:flex;align-items:center;gap:8px}.doc-item:hover{background:#f3f3f3}.doc-item.active{background:#e8efff}.doc-item .title{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.doc-item .meta{font-size:11px;color:#888}.doc-item .del{border:none;background:transparent;color:#c44;font-size:12px;visibility:hidden}.doc-item:hover .del{visibility:visible}.workspace{display:grid;grid-template-rows:1fr auto;min-width:0;min-height:0;background:#fafafa;overflow:hidden}.editor-pane>*{min-width:0;min-height:0}.workspace>*{min-width:0}.input-bar{min-width:0;box-sizing:border-box;overflow:hidden}.editor-pane{display:grid;grid-template-columns:1fr 1fr;min-height:0;border-bottom:1px solid #e5e5e5}.title-row{grid-column:1 / -1;padding:10px 16px;border-bottom:1px solid #eee;background:#fff}.title-row input{width:100%;border:none;outline:none;font-size:16px;font-weight:600;background:transparent}.editor,.preview{min-height:0;overflow-y:auto;padding:16px}.editor{border-right:1px solid #e5e5e5;background:#fff}.editor{overflow-x:hidden}.editor textarea{width:100%;max-width:100%;height:100%;border:none;outline:none;resize:none;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;line-height:1.6;background:transparent;word-break:break-all}.preview{background:#fff;line-height:1.6;overflow-x:hidden;word-wrap:break-word;overflow-wrap:anywhere}.preview h1,.preview h2,.preview h3{margin:18px 0 8px}.preview p{margin:8px 0}.preview pre{background:#f5f5f5;padding:10px;border-radius:6px;font-size:12px;overflow-x:auto;max-width:100%}.preview code{background:#f5f5f5;padding:1px 4px;border-radius:3px;font-size:12px}.preview pre code{background:transparent;padding:0;word-wrap:normal;overflow-wrap:normal}.preview blockquote{border-left:3px solid #ddd;margin:8px 0;padding:4px 12px;color:#555}.preview img{max-width:100%;height:auto}.preview table{display:block;max-width:100%;overflow-x:auto}.input-bar{background:#fff;border-top:1px solid #e5e5e5;padding:10px 12px}.input-row{display:flex;gap:8px;align-items:flex-end;min-width:0}.input-row textarea{flex:1 1 0;min-width:0;min-height:40px;max-height:160px;resize:none;padding:9px 12px;border:1px solid #ddd;border-radius:8px;outline:none;font-size:14px;line-height:1.4}.input-row textarea:focus{border-color:#6b7cff}.btn{height:40px;padding:0 14px;border-radius:8px;border:1px solid #ddd;background:#fff;font-size:14px}.btn:hover{background:#f5f5f5}.btn.primary{background:#56e;border-color:#45d;color:#fff}.btn.primary:hover{background:#45d}.btn.primary:disabled{background:#aaa;border-color:#aaa;cursor:not-allowed}.btn.mic{width:44px;padding:0}.btn.mic.on{background:#e56;border-color:#d45;color:#fff}.status{font-size:12px;color:#666;padding:4px 4px 0;min-height:18px}.status.err{color:#c44}.mobile-bar{display:none;align-items:center;gap:8px;padding:8px 12px;background:#fff;border-bottom:1px solid #e5e5e5;padding-top:max(8px,env(safe-area-inset-top))}.mobile-bar .hamburger,.mobile-bar .pane-tabs button{border:1px solid #ddd;background:#fff;border-radius:6px;font-size:14px;padding:6px 10px}.mobile-bar .pane-tabs{margin-left:auto;display:flex;gap:4px}.mobile-bar .pane-tabs button.active{background:#56e;color:#fff;border-color:#45d}.mobile-bar .doc-title{flex:1 1 0;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:600;font-size:14px}.mobile-bar .doc-title input{min-width:0}.sidebar-backdrop{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#00000059;z-index:50}@media (max-width: 768px){.app{grid-template-columns:1fr;grid-template-rows:auto 1fr;height:100dvh}.mobile-bar{display:flex}.sidebar{position:fixed;top:0;left:0;bottom:0;width:78vw;max-width:320px;border-right:1px solid #e5e5e5;border-bottom:none;transform:translate(-100%);transition:transform .2s ease;z-index:60;box-shadow:2px 0 8px #0000001a}.app.drawer-open .sidebar{transform:translate(0)}.app.drawer-open .sidebar-backdrop{display:block}.editor-pane{grid-template-columns:1fr;grid-template-rows:1fr;position:relative}.title-row{display:none}.editor,.preview{grid-column:1;grid-row:1;border-right:none;border-bottom:none;padding:12px}.editor,.preview{display:none}.app.pane-editor .editor,.app.pane-preview .preview{display:block}.input-bar{padding-bottom:max(10px,env(safe-area-inset-bottom))}.input-row textarea{font-size:16px}.btn{height:44px}.btn.mic{width:48px}}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:100}.modal{background:#fff;padding:20px;border-radius:10px;width:360px;max-width:90vw}.modal h2{margin:0 0 12px;font-size:16px}.modal input{width:100%;padding:8px 10px;border:1px solid #ddd;border-radius:6px;margin-bottom:12px;outline:none}.modal-actions{display:flex;gap:8px;justify-content:flex-end}