.document-tool-page .tool-shell{width:min(1280px,calc(100% - 28px));margin:0 auto;padding:18px 0 56px}.document-tool-page .tool-title{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:end;margin-bottom:20px}.document-tool-page .tool-title h1{max-width:860px;font-size:clamp(30px,5vw,54px)}.document-tool-page .upload-button,.document-tool-page .action-button,.document-tool-page .secondary-button,.document-tool-page .download-link,.document-tool-page .icon-button{border:0;font:inherit;cursor:pointer}.document-tool-page .upload-button input{position:absolute;inline-size:1px;block-size:1px;opacity:0;pointer-events:none}.document-tool-page .upload-button span,.document-tool-page .action-button,.document-tool-page .download-link{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;color:#fff;font-weight:800;white-space:nowrap;border-radius:8px;background:var(--accent)}.document-tool-page .action-button:disabled,.document-tool-page .download-link.is-disabled,.document-tool-page .icon-button:disabled{cursor:not-allowed;opacity:.45}.document-tool-page .workspace{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(340px,.85fr);gap:18px}.document-tool-page .editor-panel,.document-tool-page .result-panel{min-width:0;border:1px solid var(--line);border-radius:8px;background:#ffffffd1;box-shadow:var(--shadow)}.document-tool-page .result-panel{align-self:start}.document-tool-page .panel-head{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:78px;padding:16px;border-bottom:1px solid var(--line)}.document-tool-page .panel-head h2,.document-tool-page .panel-head p{margin:0}.document-tool-page .panel-head h2{font-size:18px}.document-tool-page .panel-head p{margin-top:4px;color:var(--muted);font-size:13px;line-height:1.4}.document-tool-page .control-row{display:flex;gap:8px}.document-tool-page .icon-button{display:grid;width:40px;height:40px;place-items:center;color:var(--ink);font-size:22px;border:1px solid var(--line);border-radius:8px;background:#fff}.document-tool-page .stage{position:relative;display:grid;min-height:520px;place-items:center;overflow:hidden;background:linear-gradient(45deg,rgba(96,112,125,.08) 25%,transparent 25%),linear-gradient(-45deg,rgba(96,112,125,.08) 25%,transparent 25%),linear-gradient(45deg,transparent 75%,rgba(96,112,125,.08) 75%),linear-gradient(-45deg,transparent 75%,rgba(96,112,125,.08) 75%);background-color:#f9faf7;background-position:0 0,0 10px,10px -10px,-10px 0;background-size:20px 20px;outline:0 solid transparent;transition:outline-color .16s ease,background-color .16s ease}.document-tool-page #source-canvas{display:block;max-width:100%;cursor:crosshair;touch-action:none}.document-tool-page .empty-state{position:absolute;inset:0;display:grid;place-content:center;gap:6px;color:var(--muted);text-align:center;pointer-events:none}.document-tool-page .empty-state strong{color:var(--ink);font-size:18px}.document-tool-page .stage:not(.is-empty) .empty-state{display:none}.document-tool-page .drop-overlay{position:absolute;inset:12px;z-index:3;display:none;place-content:center;gap:8px;color:#fff;text-align:center;border:2px dashed rgba(255,255,255,.78);border-radius:8px;background:#0f7c79db;pointer-events:none}.document-tool-page .drop-overlay strong{font-size:22px}.document-tool-page .stage.is-dragging-file{outline:4px solid rgba(15,124,121,.28);background-color:#e8f2f0}.document-tool-page .stage.is-dragging-file .drop-overlay{display:grid}.document-tool-page .stage.has-invalid-points{outline:4px solid rgba(217,120,54,.28)}.document-tool-page .hint-bar{display:flex;justify-content:space-between;gap:12px;padding:12px 16px;color:var(--muted);font-size:13px;border-top:1px solid var(--line)}.document-tool-page .hint-bar.is-warning{color:var(--warm);font-weight:800}.document-tool-page .preview-box{position:relative;display:grid;min-height:340px;place-items:center;padding:14px;background:var(--surface-soft)}.document-tool-page #output-canvas{display:block;max-width:100%;height:auto;background:#fff;box-shadow:0 12px 28px #202b361f}.document-tool-page .preview-empty{position:absolute;inset:0;display:grid;place-items:center;padding:24px;color:var(--muted);text-align:center}.document-tool-page .preview-box.has-output .preview-empty{display:none}.document-tool-page .result-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;padding:16px;border-top:1px solid var(--line)}.document-tool-page .secondary-button{min-height:40px;color:var(--ink);font-weight:800;border:1px solid var(--line);border-radius:8px;background:#fff}.document-tool-page .secondary-button:disabled{cursor:not-allowed;opacity:.5}.document-tool-page .download-link{grid-column:1 / -1}@media(max-width:940px){.document-tool-page .tool-title,.document-tool-page .workspace{grid-template-columns:1fr}.document-tool-page .upload-button span{width:100%}.document-tool-page .stage{min-height:430px}}@media(max-width:560px){.app-header{width:min(100% - 24px,1120px)}.document-tool-page .tool-shell{width:min(100% - 20px,1280px)}.document-tool-page .panel-head,.document-tool-page .hint-bar{align-items:flex-start;flex-direction:column}.document-tool-page .panel-head{min-height:0}.document-tool-page .stage{min-height:330px}.document-tool-page .result-actions{grid-template-columns:1fr}}.id-tool-page .id-shell{width:min(2520px,calc(100% - clamp(20px,2.4vw,64px)));margin:0 auto;padding:18px 0 56px}.id-tool-page .tool-title{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:end;margin-bottom:20px}.id-tool-page .tool-title h1{max-width:1180px;font-size:clamp(36px,3.6vw,72px)}.id-tool-page .quick-steps{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 0;padding:0;list-style:none}.id-tool-page .quick-steps li{min-height:32px;padding:7px 11px;color:var(--accent-dark);font-size:13px;font-weight:900;border:1px solid rgba(15,124,121,.18);border-radius:8px;background:#ffffffad}.id-tool-page .workspace{display:grid;grid-template-columns:minmax(500px,.84fr) minmax(540px,1.16fr);gap:clamp(16px,1.2vw,28px)}.id-tool-page .input-panel,.id-tool-page .preview-panel{min-width:0;border:1px solid var(--line);border-radius:8px;background:#ffffffd1;box-shadow:var(--shadow)}.id-tool-page .preview-panel{align-self:start}.id-tool-page .panel-head{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:78px;padding:16px;border-bottom:1px solid var(--line)}.id-tool-page .panel-head h2,.id-tool-page .panel-head p{margin:0}.id-tool-page .panel-head h2{font-size:18px}.id-tool-page .panel-head p{margin-top:4px;color:var(--muted);font-size:13px;line-height:1.4}.id-tool-page .action-button,.id-tool-page .secondary-button,.id-tool-page .download-link,.id-tool-page .icon-button{border:0;font:inherit;cursor:pointer}.id-tool-page .action-button,.id-tool-page .download-link{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;color:#fff;font-weight:800;white-space:nowrap;border-radius:8px;background:var(--accent)}.id-tool-page .action-button:disabled,.id-tool-page .secondary-button:disabled,.id-tool-page .download-link.is-disabled,.id-tool-page .icon-button:disabled{cursor:not-allowed;opacity:.45}.id-tool-page .preview-actions{display:flex;gap:8px}.id-tool-page .secondary-button{min-height:44px;padding:0 14px;color:var(--ink);font-weight:800;border:1px solid var(--line);border-radius:8px;background:#fff}.id-tool-page .icon-button{display:grid;width:40px;height:40px;place-items:center;color:var(--ink);font-size:22px;border:1px solid var(--line);border-radius:8px;background:#fff}.id-tool-page .drop-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding:16px}.id-tool-page .side-card{display:grid;gap:10px;min-width:0}.id-tool-page .drop-zone{position:relative;display:grid;min-height:clamp(190px,13vw,320px);place-content:center;gap:8px;overflow:hidden;color:var(--muted);text-align:center;border:2px dashed var(--line);border-radius:8px;background:#fbfcf9;cursor:pointer}.id-tool-page .drop-zone input{position:absolute;inline-size:1px;block-size:1px;opacity:0;pointer-events:none}.id-tool-page .drop-zone.is-dragging,.id-tool-page .drop-zone:hover{border-color:#0f7c7994;background:#eef7f5}.id-tool-page .drop-zone.has-image{border-style:solid}.id-tool-page .drop-title{color:var(--ink);font-size:18px;font-weight:900}.id-tool-page .drop-copy{font-size:13px}.id-tool-page .drop-help{max-width:210px;color:#7a8790;font-size:12px;line-height:1.5}.id-tool-page .drop-zone canvas{position:absolute;inset:0;display:none;width:100%;height:100%;object-fit:contain;padding:12px}.id-tool-page .drop-zone.has-image canvas{display:block}.id-tool-page .drop-zone.has-image .drop-title,.id-tool-page .drop-zone.has-image .drop-copy,.id-tool-page .drop-zone.has-image .drop-help{position:relative;z-index:1;align-self:end;justify-self:start;margin-left:12px;padding:4px 8px;color:#fff;border-radius:8px;background:#1d2933b8}.id-tool-page .drop-zone.has-image .drop-copy,.id-tool-page .drop-zone.has-image .drop-help{display:none}.id-tool-page .side-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.id-tool-page .side-action{min-height:40px;color:var(--ink);font:inherit;font-weight:800;border:1px solid var(--line);border-radius:8px;background:#fff;cursor:pointer}.id-tool-page .side-action:disabled{cursor:not-allowed;opacity:.45}.id-tool-page .side-action:not(:disabled):hover{border-color:#0f7c797a}.id-tool-page .settings{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding:0 16px 16px}.id-tool-page .settings label{display:grid;gap:6px;min-width:0;color:var(--muted);font-size:13px;font-weight:800}.id-tool-page .settings output{color:var(--accent-dark);font-weight:900}.id-tool-page .settings select,.id-tool-page .settings input[type=text]{width:100%;min-height:40px;padding:0 10px;color:var(--ink);font:inherit;border:1px solid var(--line);border-radius:8px;background:#fff}.id-tool-page .settings input[type=range]{width:100%;accent-color:var(--accent)}.id-tool-page .settings-reset{min-height:40px;color:var(--ink);font:inherit;font-weight:800;border:1px solid var(--line);border-radius:8px;background:#fff;cursor:pointer}.id-tool-page .settings-reset:hover{border-color:#0f7c797a}.id-tool-page .wide-setting{grid-column:1 / -1}.id-tool-page .paper-frame{position:relative;display:grid;min-height:clamp(560px,calc(100vh - 250px),980px);place-items:center;padding:18px;background:var(--surface-soft)}.id-tool-page #paper-canvas{display:block;width:min(100%,clamp(520px,38vw,980px));height:auto;background:#fff;box-shadow:0 18px 38px #202b362e}@media(min-width:1500px){.id-tool-page .paper-frame{min-height:min(980px,calc(100vh - 200px))}}@media(min-width:1900px){.id-tool-page .workspace{grid-template-columns:minmax(760px,.9fr) minmax(860px,1.1fr)}.id-tool-page .drop-grid{gap:16px}.id-tool-page .settings{grid-template-columns:repeat(3,minmax(0,1fr))}.id-tool-page .wide-setting{grid-column:span 2}}@media(min-width:2300px){.id-tool-page .workspace{grid-template-columns:minmax(900px,.92fr) minmax(1040px,1.08fr)}.id-tool-page .settings{grid-template-columns:repeat(4,minmax(0,1fr))}.id-tool-page .wide-setting{grid-column:span 2}}.id-tool-page .empty-preview{position:absolute;inset:0;display:grid;place-content:center;gap:8px;padding:24px;color:var(--muted);text-align:center}.id-tool-page .empty-preview strong{color:var(--ink);font-size:18px}.id-tool-page .empty-preview span{max-width:280px;line-height:1.7}.id-tool-page .paper-frame.has-output .empty-preview{display:none}.id-tool-page .correction-dialog{box-sizing:border-box;width:calc(100vw - 24px);height:calc(100vh - 24px);min-width:0;max-width:none;max-height:calc(100vh - 24px);padding:0;border:0;border-radius:8px;background:transparent}.id-tool-page .correction-dialog::backdrop{background:#1d293394}.id-tool-page .correction-panel{display:grid;grid-template-rows:auto minmax(0,1fr) auto;height:100%;max-height:calc(100vh - 24px);overflow:hidden;border-radius:8px;background:#fff;box-shadow:0 24px 70px #0f172a47}.id-tool-page .correction-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px;border-bottom:1px solid var(--line)}.id-tool-page .correction-head h2,.id-tool-page .correction-head p{margin:0}.id-tool-page .correction-head h2{font-size:18px}.id-tool-page .correction-head p{margin-top:4px;color:var(--muted);font-size:13px}.id-tool-page .correction-head.is-warning p{color:var(--warm);font-weight:900}.id-tool-page .correction-tips{display:flex;flex:1;flex-wrap:wrap;justify-content:flex-end;gap:8px;margin:0;padding:0;list-style:none}.id-tool-page .correction-tips li{min-height:30px;padding:6px 9px;color:var(--muted);font-size:12px;font-weight:900;border:1px solid var(--line);border-radius:7px;background:#fff}.id-tool-page .correction-workspace{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(340px,.58fr);gap:12px;min-height:0;padding:12px;background:#eef5f4}.id-tool-page .correction-editor,.id-tool-page .correction-preview{display:grid;grid-template-rows:auto minmax(0,1fr);min-width:0;min-height:0;overflow:hidden;border:1px solid var(--line);border-radius:8px;background:#fff}.id-tool-page .compare-label{min-height:45px;padding:8px 12px;color:var(--muted);font-size:13px;font-weight:900;border-bottom:1px solid var(--line)}.id-tool-page .correction-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px}.id-tool-page .zoom-tools{display:flex;align-items:center;gap:6px}.id-tool-page .zoom-tools button,.id-tool-page .zoom-tools output{display:inline-grid;min-width:38px;height:30px;place-items:center;padding:0 9px;color:var(--ink);font:inherit;font-size:12px;font-weight:900;white-space:nowrap;border:1px solid var(--line);border-radius:7px;background:#fff}.id-tool-page .zoom-tools button{cursor:pointer}.id-tool-page .zoom-tools button:hover{border-color:#0f7c797a}.id-tool-page .zoom-tools output{min-width:58px;color:var(--accent-dark);background:#eef7f5}.id-tool-page .correction-stage{position:relative;min-width:0;min-height:min(72vh,760px);overflow:hidden;padding:10px;background:linear-gradient(45deg,rgba(96,112,125,.08) 25%,transparent 25%),linear-gradient(-45deg,rgba(96,112,125,.08) 25%,transparent 25%),linear-gradient(45deg,transparent 75%,rgba(96,112,125,.08) 75%),linear-gradient(-45deg,transparent 75%,rgba(96,112,125,.08) 75%);background-color:#f9faf7;background-position:0 0,0 10px,10px -10px,-10px 0;background-size:20px 20px}.id-tool-page .correction-stage:after{position:absolute;right:12px;bottom:10px;z-index:2;padding:4px 8px;color:#60707d;font-size:12px;font-weight:800;border-radius:7px;background:#ffffffd1;content:"滚轮缩放 · 按住空白处拖动";pointer-events:none}.id-tool-page .correction-stage.has-invalid-points{outline:4px solid rgba(217,120,54,.28);outline-offset:-4px}.id-tool-page .correction-stage.is-panning,.id-tool-page .correction-stage.is-panning #correction-canvas{cursor:grabbing}.id-tool-page .correction-canvas-wrap{position:absolute;left:0;top:0;transform-origin:0 0;will-change:transform}.id-tool-page #correction-canvas{display:block;cursor:crosshair;touch-action:none;-webkit-user-select:none;user-select:none}.id-tool-page .corrected-preview-frame{display:grid;min-width:0;min-height:0;place-items:center;overflow:hidden;padding:16px;background:#f9faf7}.id-tool-page #correction-preview-canvas{display:block;width:min(100%,520px);height:auto;aspect-ratio:856 / 540;background:#fff;box-shadow:0 14px 32px #202b3629}.id-tool-page .correction-actions{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:10px;padding:14px 16px;border-top:1px solid var(--line)}@media(max-width:1180px){.id-tool-page .tool-title,.id-tool-page .workspace{grid-template-columns:1fr}.id-tool-page .tool-title{align-items:start}.id-tool-page .download-link{width:100%}.id-tool-page .paper-frame{min-height:560px}}@media(max-height:760px)and (min-width:1181px){.id-tool-page .id-shell{padding-top:10px}.id-tool-page .tool-title{margin-bottom:12px}.id-tool-page .tool-title h1{font-size:clamp(32px,3vw,52px)}.id-tool-page .quick-steps{margin-top:10px}.id-tool-page .panel-head{min-height:66px;padding:12px 14px}.id-tool-page .drop-zone{min-height:170px}.id-tool-page .paper-frame{min-height:calc(100vh - 190px)}}@media(max-width:620px){.app-header{width:min(100% - 24px,1120px)}.id-tool-page .id-shell{width:min(100% - 20px,1280px)}.id-tool-page .panel-head{align-items:flex-start;flex-direction:column;min-height:0}.id-tool-page .preview-actions{width:100%}.id-tool-page .preview-actions button{flex:1}.id-tool-page .drop-grid,.id-tool-page .settings{grid-template-columns:1fr}.id-tool-page .correction-stage{min-height:360px}.id-tool-page .correction-toolbar{align-items:flex-start;flex-direction:column}.id-tool-page .zoom-tools{flex-wrap:wrap;width:100%}.id-tool-page .zoom-tools button,.id-tool-page .zoom-tools output{flex:1;min-width:0}.id-tool-page .correction-dialog{width:calc(100vw - 16px);height:calc(100vh - 16px);max-width:calc(100vw - 16px);max-height:calc(100vh - 16px)}.id-tool-page .correction-panel{max-height:calc(100vh - 16px)}.id-tool-page .correction-workspace{grid-template-columns:1fr;max-height:calc(100vh - 170px);overflow:auto}.id-tool-page .corrected-preview-frame{min-height:240px}.id-tool-page #correction-preview-canvas{width:100%;max-width:100%}.id-tool-page .correction-actions{flex-direction:column}.id-tool-page .paper-frame{min-height:430px;padding:12px}}:root{color-scheme:light;--bg: #f6f4ef;--surface: #ffffff;--surface-soft: #eef5f4;--ink: #1d2933;--muted: #60707d;--line: #d8dedb;--accent: #0f7c79;--accent-dark: #075f5c;--warm: #d97836;--shadow: 0 18px 50px rgba(32, 43, 54, .12)}*{box-sizing:border-box}html{min-height:100%}body{min-height:100%;margin:0;color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft YaHei,sans-serif;background:linear-gradient(135deg,rgba(15,124,121,.1),transparent 34%),linear-gradient(315deg,rgba(217,120,54,.12),transparent 30%),var(--bg)}a{color:inherit;text-decoration:none}.app-header{display:flex;align-items:center;justify-content:space-between;width:min(1120px,calc(100% - 32px));margin:0 auto;padding:22px 0}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800}.brand-mark{display:inline-grid;width:34px;height:34px;place-items:center;color:#fff;border-radius:8px;background:var(--accent)}.home-shell{width:min(1120px,calc(100% - 32px));margin:0 auto;padding:34px 0 72px}.home-hero{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:end;padding:56px 0 42px;border-bottom:1px solid var(--line)}.eyebrow{margin:0 0 12px;color:var(--accent-dark);font-size:14px;font-weight:800}h1{max-width:780px;margin:0;font-size:clamp(38px,7vw,76px);line-height:1.04;letter-spacing:0}.hero-copy{max-width:700px;margin:20px 0 0;color:var(--muted);font-size:18px;line-height:1.8}.primary-link{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 18px;color:#fff;font-weight:800;border-radius:8px;background:var(--accent);box-shadow:0 12px 28px #0f7c7933}.primary-link:hover{background:var(--accent-dark)}.tool-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;padding-top:24px}.tool-card{display:grid;grid-template-columns:46px minmax(0,1fr);gap:14px;align-items:center;min-height:112px;padding:20px;border:1px solid var(--line);border-radius:8px;background:#ffffffbd;box-shadow:var(--shadow)}.tool-card:hover{border-color:#0f7c796b}.tool-card-muted{color:var(--muted);background:#ffffff6b;box-shadow:none}.tool-icon{display:grid;width:46px;height:46px;place-items:center;color:#fff;font-size:24px;font-weight:800;border-radius:8px;background:var(--warm)}.tool-card strong,.tool-card small{display:block}.tool-card strong{margin-bottom:6px;font-size:18px}.tool-card small{color:var(--muted);line-height:1.6}@media(max-width:720px){.home-hero,.tool-grid{grid-template-columns:1fr}.home-hero{padding-top:28px}.primary-link{width:100%}}#root{min-height:100%}.header-link{color:var(--muted);font-size:14px;font-weight:800}.header-link:hover{color:var(--accent-dark)}