:root{--paper:#f4f1ea;--ink:#1b1d1c;--muted:#767773;--line:#d8d4cb;--white:#fff;--accent:#e4572e;--yellow:#f3c94f;--green:#326b57;--shadow:0 18px 55px rgba(38,35,28,.12);font-family:"DM Sans","Noto Sans SC",sans-serif;color:var(--ink);background:var(--paper)}*{box-sizing:border-box}body{margin:0;min-width:920px;overflow:hidden}button,input,textarea{font:inherit}.app-shell{height:100vh;display:flex;flex-direction:column}.topbar{height:70px;display:grid;grid-template-columns:210px 1fr auto;align-items:center;padding:0 22px;border-bottom:1px solid var(--line);background:rgba(244,241,234,.94);backdrop-filter:blur(14px);z-index:20}.brand{display:flex;align-items:center;gap:11px;color:var(--ink);text-decoration:none;font-size:21px;font-weight:700;letter-spacing:.04em}.brand-mark{width:31px;height:31px;border:2px solid var(--ink);display:flex;align-items:flex-end;justify-content:center;gap:2px;padding:6px 5px;transform:rotate(-2deg)}.brand-mark i{display:block;width:4px;background:var(--ink);border-radius:2px}.brand-mark i:nth-child(1){height:9px}.brand-mark i:nth-child(2){height:15px;background:var(--accent)}.brand-mark i:nth-child(3){height:12px}.document-meta{min-width:0;text-align:center;display:flex;flex-direction:column;line-height:1.25}.document-meta>span:first-child{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.save-state{font-size:11px;color:var(--muted);margin-top:3px}.top-actions{display:flex;align-items:center;gap:9px}.icon-button,.secondary-button,.primary-button{height:38px;border-radius:8px;border:1px solid var(--line);background:transparent;padding:0 14px;cursor:pointer;font-weight:600}.icon-button{width:38px;padding:9px}.icon-button svg,.tool svg,.search-box svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.primary-button{background:var(--ink);color:#fff;border-color:var(--ink);padding:0 17px}.primary-button span{color:var(--yellow);font-size:19px}.secondary-button:disabled{opacity:.4;cursor:not-allowed}.search-panel{position:absolute;z-index:15;top:70px;left:210px;right:256px;padding:14px 18px;background:#ebe7df;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:14px;transform:translateY(-110%);transition:.22s ease;box-shadow:0 12px 25px rgba(0,0,0,.05)}.search-panel.open{transform:translateY(0)}.search-box{height:40px;width:min(500px,65%);display:flex;align-items:center;gap:10px;background:white;border:1px solid var(--line);border-radius:8px;padding:0 12px}.search-box svg{width:19px}.search-box input{border:0;outline:0;flex:1;min-width:0}.search-box kbd,.shortcuts kbd{border:1px solid #ccc6bb;background:#f6f4ef;border-radius:4px;padding:2px 6px;font-size:10px;color:var(--muted);box-shadow:0 1px 0 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var(--line);background:#f7f4ee}.tool-group{display:flex;align-items:center;gap:4px}.tool{width:32px;height:32px;border:0;background:transparent;border-radius:6px;padding:7px;cursor:pointer;color:#5d5f5c}.tool:hover,.tool.active{background:#ded9ce;color:var(--ink)}.tool.active{box-shadow:inset 0 -2px 0 var(--accent)}.tool:disabled{opacity:.3}.tool-separator{height:22px;width:1px;background:var(--line);margin:0 5px}.color-picker{width:27px;height:27px;border-radius:50%;padding:4px;cursor:pointer}.color-picker input{position:absolute;opacity:0;pointer-events:none}.color-picker span{display:block;width:19px;height:19px;background:var(--accent);border-radius:50%;border:3px solid white;box-shadow:0 0 0 1px #aaa}.size-input{width:58px;accent-color:var(--ink)}.page-nav,.zoom-group{display:flex;align-items:center;gap:8px;font-size:12px}.page-nav button,.zoom-group button{width:30px;height:30px;background:white;border:1px solid var(--line);border-radius:6px;cursor:pointer}.page-nav 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textarea:focus{border-color:#99948a;background:#fff}.notes-tip{font-size:10px;color:#96958f;margin-top:8px;text-align:right}.notes-tip span{border:1px solid #ccc6bb;border-radius:3px;padding:1px 4px}.shortcuts{margin-top:35px;border-top:1px solid var(--line);padding-top:17px;color:#787974;font-size:11px}.shortcuts p{font-size:10px;text-transform:uppercase;letter-spacing:.12em;font-weight:700;margin:0 0 13px}.shortcuts div{display:flex;align-items:center;margin:10px 0}.shortcuts div span{margin-right:auto}.loading{position:fixed;inset:0;z-index:100;background:rgba(244,241,234,.88);backdrop-filter:blur(5px);display:flex;align-items:center;justify-content:center;flex-direction:column}.loading[hidden]{display:none}.loading span{width:34px;height:34px;border:3px solid #d5cfc5;border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}.loading p{font-size:13px;font-weight:600}.toast{position:fixed;left:50%;bottom:26px;z-index:120;transform:translate(-50%,20px);background:#1f211f;color:white;padding:10px 17px;border-radius:7px;font-size:12px;opacity:0;transition:.2s;pointer-events:none}.toast.show{opacity:1;transform:translate(-50%,0)}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:1100px){.workspace{grid-template-columns:170px 1fr 220px}.topbar{grid-template-columns:170px 1fr auto}.search-panel{left:170px;right:220px}.size-input{display:none}.empty-state h1{font-size:43px}}