:root{--bg:#fff;--band:#f5f5f7;--ink:#1d1d1f;--muted:#6e6e73;--blue:#0071e3;--line:rgba(0,0,0,.1);--danger:#a62e24;--radius:12px;--space:16px;--tap-size:44px;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif;color:var(--ink);background:var(--bg)}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button{cursor:pointer;border:1px solid var(--line);border-radius:999px;padding:8px 14px;background:var(--bg);color:var(--ink);white-space:nowrap}button:hover{background:var(--band)}button:disabled{opacity:.55;cursor:wait}button.primary,.selected-button{background:var(--blue);border-color:var(--blue);color:var(--bg)}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:2px solid var(--blue);outline-offset:3px}input,select,textarea{border:1px solid var(--line);border-radius:var(--radius);padding:10px 12px;min-width:0;background:var(--bg);color:var(--ink)}h1,h2,h3,p{margin:0}.app{height:100dvh;display:flex;flex-direction:column;overflow:hidden}.topbar{display:flex;align-items:center;justify-content:space-between;gap:var(--space);padding:14px 24px;border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;align-items:center;min-width:0}.brand-mark{width:40px;height:40px;border-radius:var(--radius);background:var(--ink);color:var(--bg);display:grid;place-items:center;font-size:23px;flex-shrink:0}.brand h1{font-size:20px;font-weight:700;letter-spacing:-.025em}.brand p{color:var(--muted);font-size:12px;margin-top:4px}.header-actions,.workspace-actions,.sheet-picker{display:flex;align-items:center;gap:10px;min-width:0}.nickname{max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}.workspace-bar{display:flex;justify-content:space-between;gap:var(--space);padding:10px 24px;background:var(--band);border-bottom:1px solid var(--line)}.sheet-picker label,.sheet-count{color:var(--muted);font-size:12px;white-space:nowrap}.sheet-picker select{max-width:320px;font-size:13px;padding:7px 10px}.workspace-actions button{font-size:13px}.work-area{display:flex;flex:1;min-height:0;position:relative}.grid-wrap{flex:1;min-width:0;min-height:0;height:100%;overflow:hidden}.statusbar{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);padding:7px 24px;border-top:1px solid var(--line)}.banner{display:flex;gap:12px;align-items:center;padding:10px 24px;background:var(--band);font-size:13px;color:var(--danger);flex-wrap:wrap}.loading{margin:auto;color:var(--muted)}.boot-loading{display:grid;place-items:center;min-height:100dvh;color:var(--muted);font-size:14px;padding:var(--space)}.comments{width:340px;border-left:1px solid var(--line);display:flex;flex-direction:column;background:var(--bg);flex-shrink:0;padding:var(--space);gap:var(--space)}.panel-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:8px}.panel-heading h2{font-size:17px;line-height:1.4;overflow-wrap:anywhere}.panel-heading button{border:0;font-size:22px;padding:0 8px}.eyebrow{font-size:12px;color:var(--muted);margin-bottom:8px}.comment-list{flex:1;overflow:auto;min-height:0}.comment-list article{padding:16px 0;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:8px}.comment-list p{white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;line-height:1.6}.comment-meta{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:12px}.comment-meta time{color:var(--muted);font-size:11px}.empty,.muted{color:var(--muted);font-size:13px;line-height:1.6}.comment-form{display:flex;flex-direction:column;gap:12px}.comment-form textarea{resize:vertical;min-height:95px;max-height:220px;font-size:14px}.checkbox{display:flex;align-items:center;gap:8px;font-size:12px}.cell-tag{font-size:11px;color:var(--blue)}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000003d;display:flex;align-items:center;justify-content:center;z-index:1000;padding:22px}.dialog{background:var(--bg);border-radius:22px;padding:32px;width:420px;max-width:100%;position:relative;box-shadow:0 18px 50px #0000001a;display:flex;flex-direction:column;gap:18px;max-height:90dvh;overflow:auto}.dialog h2{font-size:28px;letter-spacing:-.02em}.close{position:absolute;top:12px;right:12px;border:0;font-size:24px}.dialog form{display:flex;flex-direction:column;gap:16px}.dialog label{display:flex;flex-direction:column;gap:7px;font-size:13px}.text-button{border:0;color:var(--blue);background:transparent;padding:4px}.error{color:var(--danger);font-size:13px;line-height:1.5}.history{width:540px}.history article{display:flex;flex-direction:column;gap:8px;border-bottom:1px solid var(--line);padding-bottom:var(--space);font-size:14px}.mobile-reader{flex-shrink:0;min-width:0;padding:calc(var(--space) / 2) var(--space);border-top:1px solid var(--line);background:var(--bg)}.reader-hint{color:var(--muted);font-size:11px;line-height:1.5}.cell-preview summary{display:flex;align-items:center;gap:calc(var(--space) * .75);min-height:var(--tap-size);cursor:pointer;font-size:13px}.cell-preview .cell-tag{flex-shrink:0}.cell-snippet{min-width:0;flex:1;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.cell-full,.source-note{white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;line-height:1.6;padding:calc(var(--space) / 2) 0;max-height:25dvh;overflow:auto}.source-note{font-size:12px;color:var(--muted)}.cell-preview .text-button{min-height:var(--tap-size)}@media(max-width:760px){.work-area{flex-direction:column}.grid-wrap .fortune-sheet-overlay{touch-action:none}}@media(max-width:760px){.topbar{padding:12px 16px;gap:8px}.brand h1{font-size:15px;line-height:1.35}.brand-mark{display:none}.brand p{font-size:10px}.header-actions{gap:6px}.header-actions button{font-size:11px;padding:8px 10px}.nickname,.desktop-only{display:none}.workspace-bar{padding:10px 16px;gap:8px}.sheet-picker label,.sheet-count{display:none}.sheet-picker select{max-width:220px;width:100%}.comments{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;z-index:10;border:0;padding:22px}.statusbar{font-size:10px;padding:8px 16px}.dialog{padding:26px}.banner{padding:10px 16px;font-size:12px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}