:root{--blue:#2457d6;--ink:#182c47;--muted:#7a899e;--line:#e1e8f2;--soft:#eef3ff;--bg:#f5f7fb}*{box-sizing:border-box}body{margin:0;font:14px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg)}button,input{font:inherit}button{cursor:pointer;min-height:44px;border:0;-webkit-tap-highlight-color:transparent}button:disabled{cursor:not-allowed;opacity:.45}button:focus-visible,input:focus-visible,[tabindex]:focus-visible{outline:3px solid #a0bcff;outline-offset:3px}h1,h2,p{margin:0}svg{width:18px;height:18px;flex-shrink:0}.hidden{display:none!important}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.btn{min-height:44px;border:1px solid #dce4ef;border-radius:9px;padding:10px 18px;background:white;color:var(--ink);display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:13px;font-weight:600;white-space:nowrap}.btn:hover:not(:disabled){background:#f5f8ff}.btn.primary{background:var(--blue);color:#fff;border-color:var(--blue);box-shadow:0 3px 12px #2457d614}.btn.primary:hover:not(:disabled){background:#1c4fc8}.btn.small{font-size:12px;padding:8px 13px}.btn svg{width:16px;height:16px}.icon-btn{width:44px;min-width:44px;display:grid;place-items:center;border-radius:7px;color:#8191a8;background:none}.icon-btn:hover{color:var(--blue);background:var(--soft)}.text-btn{min-height:44px;display:flex;align-items:center;justify-content:center;gap:6px;color:var(--blue);background:none;padding:5px 10px;font-size:12px;white-space:nowrap}.text-btn svg{width:15px;height:15px}.topbar{height:75px;background:#fff;border-bottom:1px solid var(--line);padding:0 max(25px,calc((100vw - 1160px)/2));display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:10px}.brandmark{width:35px;height:35px;background:var(--blue);color:white;border-radius:10px;display:grid;place-items:center}.brandmark svg{width:22px;height:22px}.brand strong{font-size:22px;font-weight:650;letter-spacing:2px}.brand-description{font-size:12px;color:#8a97a9;padding-left:13px;margin-left:4px;border-left:1px solid var(--line)}.version{font-size:10px;color:#8193ac;border:1px solid #e1e8f2;border-radius:5px;padding:3px 8px;background:#fafbfd}.content{max-width:1210px;margin:auto;padding:40px 25px 20px}.panel{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 8px 30px #1e365507}.upload-screen{max-width:620px;margin:0 auto}.page-head{text-align:center;margin:4px 0 28px}.page-head h1{font-size:27px;font-weight:600;letter-spacing:.5px;margin-bottom:9px}.page-head p{font-size:13px;color:var(--muted)}.upload-panel{padding:25px}.dropzone{border:1.5px dashed #cbd9ed;border-radius:10px;background:#fbfcff;padding:34px 20px 28px;text-align:center}.dropzone.dragover{border-color:var(--blue);background:var(--soft)}.upload-icon{width:60px;height:60px;background:var(--soft);color:var(--blue);border:1px solid #dfe9fc;display:grid;place-items:center;border-radius:17px;margin:0 auto 18px}.upload-icon svg{width:27px;height:27px}.dropzone h2{font-size:16px;font-weight:600;margin-bottom:6px}.dropzone p{font-size:12px;color:var(--muted);margin-bottom:20px}.dropzone small{display:block;font-size:11px;color:#96a2b4;margin-top:15px}.dropzone .btn{min-width:148px}.submit-button{width:100%;margin-top:20px;min-height:48px;font-size:14px}.upload-note{font-size:11px;color:#95a1b3;text-align:center;margin:12px 0 0}.prepared-photo{background:#edf1f6;max-height:440px;border:1px solid var(--line);border-radius:10px;overflow:auto;text-align:center;line-height:0}.prepared-photo img{width:100%;max-width:450px;display:inline-block;height:auto}.preview-tools{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:11px}.preview-tools strong{font-size:12px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}.preview-tools .text-btn{flex-shrink:0;padding-right:0}.image-processing{display:flex;align-items:center;justify-content:center;gap:8px;color:var(--blue);font-size:12px;padding:18px 0}.field-message{font-size:12px;color:#bd5b53;line-height:1.9;margin-top:12px;overflow-wrap:anywhere}.field-message:empty{display:none}.notice{border:1px solid #dce7fb;background:#f0f5ff;color:#5e79a1;padding:13px 15px;border-radius:10px;font-size:12px;line-height:1.9;margin:0 auto 23px;overflow-wrap:anywhere;max-width:100%}.notice.warning{background:#fff9ed;border-color:#eddfbf;color:#917642}.access-panel{padding:19px 22px;display:flex;gap:18px;align-items:center;flex-wrap:wrap;max-width:760px;margin:0 auto 26px}.access-panel h2{font-size:14px;font-weight:600}.access-panel p{font-size:12px;color:var(--muted);margin-top:4px}.access-panel form{display:flex;gap:8px;margin-left:auto}.access-panel input{width:195px;min-width:90px;height:44px;border:1px solid #d6e0ee;background:#fff;padding:9px 12px;border-radius:8px;color:var(--ink);font-size:13px}.access-panel .field-message{color:#bd5b53;flex-basis:100%;margin:0}.processing-panel{max-width:570px;margin:48px auto;padding:40px 34px;text-align:center}.processing-emblem{position:relative;display:grid;place-items:center;width:74px;height:74px;background:var(--soft);color:var(--blue);border-radius:21px;margin:0 auto 28px}.processing-emblem svg{width:31px;height:31px}.processing-emblem.working:after{position:absolute;inset:-6px;content:'';border:2px solid #dfe8fc;border-top-color:var(--blue);border-radius:26px;animation:spin 2.3s linear infinite}.processing-emblem.failed{color:#c16b5f;background:#fff0ec}.processing-emblem.uncertain{color:#a88942;background:#fff7e6}.processing-panel h1{font-size:23px;font-weight:600;margin-bottom:12px}.processing-panel>p{font-size:13px;color:var(--muted);line-height:1.9}.processing-panel>p.field-message{color:#bd5b53}.processing-panel>p.notice{font-size:12px;margin-top:18px}.processing-actions{display:flex;align-items:center;justify-content:center;gap:9px;flex-wrap:wrap;margin-top:23px}.poll-note{display:block;margin-top:20px;font-size:11px;color:#94a2b7;line-height:1.9}.result-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}.result-head h1{font-size:26px;font-weight:600;margin-bottom:6px}.result-head p{font-size:12px;color:var(--muted)}.mobile-tabs{display:none}.result-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(310px,.85fr);gap:23px;align-items:start}.paper-panel{overflow:hidden}.paper-toolbar{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 15px;border-bottom:1px solid var(--line)}.paper-toolbar strong{font-size:12px;font-weight:500;color:#6d7f98}.paper-toolbar>div{display:flex;align-items:center;gap:3px}.paper-scroller{max-height:780px;overflow:auto;background:#edf0f5;padding:22px;scrollbar-width:thin}.paper{position:relative;line-height:0;margin:auto;max-width:800px;background:#fff;box-shadow:0 4px 22px #263d5f1e}.paper>img{width:100%;height:auto;min-height:120px;display:block}.paper>svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible}.annotation-line{fill:#d8897610;stroke:#c97769;stroke-width:2;vector-effect:non-scaling-stroke;cursor:pointer;pointer-events:all}.annotation-group.active .annotation-line{stroke:var(--blue);fill:#2457d61a;stroke-width:2.5}.annotation-badge{fill:#c16b60;stroke:white;stroke-width:1.5;vector-effect:non-scaling-stroke;pointer-events:none}.annotation-group.active .annotation-badge{fill:var(--blue)}.annotation-index{fill:white;text-anchor:middle;font-family:sans-serif;pointer-events:none;font-weight:600}.paper-caption{padding:11px 14px;border-top:1px solid var(--line);font-size:11px;line-height:1.8;color:#8c9bb0;display:flex;align-items:flex-start;gap:6px}.paper-caption svg{width:13px;height:13px;margin-top:3px}.suggestion-side{min-width:0}.suggestion-heading{margin:5px 0 14px}.suggestion-heading h2{font-size:14px;font-weight:600}.suggestion-list{display:grid;gap:12px;max-height:835px;overflow:auto;scrollbar-width:thin;padding:2px}.suggestion-card{border:1px solid var(--line);background:#fff;border-radius:11px;padding:17px;cursor:pointer;overflow-wrap:anywhere;outline:none}.suggestion-card.active{border-color:#91aeed;box-shadow:0 0 0 2px #2457d608}.suggestion-top{display:flex;align-items:center;gap:8px;margin-bottom:10px}.suggestion-number{width:23px;height:23px;background:#fff0ec;color:#bb6c60;display:grid;place-items:center;border-radius:5px;font-size:10px;font-weight:600;flex-shrink:0}.suggestion-top h3{margin:0;font-size:12px;font-weight:600}.suggestion-subtype{font-size:11px;color:#8c9bb0;margin:-4px 0 9px 31px}.suggestion-original{font-size:13px;color:#3a4d67;line-height:1.9;white-space:pre-wrap}.suggestion-replacement{font-size:12px;color:var(--blue);line-height:1.9;padding:8px 10px;border-radius:6px;background:#f2f6ff;white-space:pre-wrap;margin-top:8px}.suggestion-message{font-size:12px;color:#7c8da4;line-height:1.95;white-space:pre-wrap;margin-top:9px}.suggestion-position{border-top:1px solid #edf1f6;padding-top:10px;margin-top:13px;display:flex;align-items:center;gap:5px;color:#99a7bb;font-size:10px}.suggestion-position svg{width:12px;height:12px}.suggestion-note{font-size:11px;color:#99a7ba;margin:14px 4px 0;line-height:1.8}.empty-result{text-align:center;padding:35px 23px;background:white;border:1px solid var(--line);border-radius:11px}.empty-result>svg{color:#99accb;width:31px;height:31px;margin-bottom:12px}.empty-result h3{font-size:14px;margin:0 0 8px;font-weight:600}.empty-result p{font-size:12px;color:var(--muted);line-height:1.9}.footer{text-align:center;color:#a0acbc;font-size:10px;margin-top:33px;padding:13px 0}.toast{position:fixed;left:50%;bottom:25px;transform:translateX(-50%);max-width:calc(100vw - 28px);display:flex;align-items:center;gap:8px;padding:12px 17px;background:#233c5b;color:white;border-radius:10px;font-size:12px;z-index:100;box-shadow:0 5px 22px #203c5925}.toast svg{width:16px;height:16px}.dialog-backdrop{position:fixed;inset:0;background:#172a4969;z-index:80;backdrop-filter:blur(3px);display:flex;align-items:center;justify-content:center;padding:20px}.dialog{width:1040px;max-width:100%;max-height:92vh;background:#fff;border-radius:15px;padding:20px;overflow:auto;box-shadow:0 20px 80px #1b325533}.dialog-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}.dialog-header h2{font-size:18px;font-weight:600}.zoom-tools{display:flex;align-items:center;gap:8px;margin-bottom:13px}.zoom-tools>span{min-width:45px;text-align:center;font-size:12px;color:var(--muted)}.zoom-scroll{height:calc(82vh - 150px);min-height:230px;overflow:auto;background:#edf0f5;padding:14px;border:1px solid var(--line);border-radius:9px;touch-action:pan-x pan-y}.zoom-paper{max-width:none;margin:0;box-shadow:0 2px 17px #253e5b20}.zoom-note{font-size:11px;color:#8a9bb2;margin-top:10px}.spin{animation:spin 1.5s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.spin,.processing-emblem.working:after{animation:none}*{scroll-behavior:auto!important}}
@media(max-width:900px){.result-grid{grid-template-columns:minmax(0,1.1fr) minmax(285px,.9fr);gap:18px}.paper-scroller{padding:17px}.content{padding-top:30px}.brand-description{font-size:11px}.result-head h1{font-size:24px}}
@media(max-width:680px){body{font-size:13px}.topbar{height:64px;padding:0 18px}.brand{gap:8px}.brandmark{width:31px;height:31px;border-radius:9px}.brandmark svg{width:19px;height:19px}.brand strong{font-size:20px}.brand-description{font-size:10px;padding-left:10px;margin-left:2px}.version{font-size:9px;padding:3px 7px}.content{padding:29px 18px 16px}.page-head{margin:1px 0 24px}.page-head h1{font-size:25px;margin-bottom:8px}.page-head p{font-size:12px;line-height:1.9}.upload-panel{padding:19px}.dropzone{padding:30px 15px 25px}.upload-icon{width:57px;height:57px;border-radius:16px;margin-bottom:17px}.dropzone h2{font-size:15px}.dropzone p{font-size:12px;line-height:1.8;max-width:230px;margin:6px auto 19px}.dropzone small{font-size:10px}.btn{font-size:12px;padding:10px 15px}.submit-button{font-size:14px;min-height:48px;margin-top:18px}.upload-note{font-size:10px;line-height:1.8;margin-top:11px}.prepared-photo{max-height:440px}.preview-tools{gap:8px;margin-top:8px}.preview-tools strong{font-size:11px}.text-btn{font-size:12px;padding:5px 6px}.image-processing,.field-message{font-size:12px}.notice{font-size:12px;padding:12px 13px;line-height:1.9}.access-panel{padding:17px;gap:13px;margin-bottom:24px}.access-panel form{width:100%;gap:7px;margin-left:0}.access-panel input{width:0;min-width:90px;flex:1;font-size:12px}.access-panel .btn{font-size:12px;padding:10px 17px}.access-panel h2{font-size:14px}.access-panel p{font-size:12px}.processing-panel{padding:34px 23px;margin:30px auto}.processing-panel h1{font-size:22px}.processing-panel>p{font-size:12px}.processing-actions{gap:8px}.processing-actions .btn{font-size:12px;padding:9px 13px}.poll-note{font-size:11px}.result-head{gap:12px;margin-bottom:21px}.result-head h1{font-size:24px}.result-head p{font-size:11px}.result-head .btn{font-size:12px;padding:9px 12px}.result-head .btn svg{width:14px;height:14px}.mobile-tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;background:#e9eff7;border-radius:9px;padding:4px;margin-bottom:15px}.mobile-tabs button{min-height:44px;display:flex;align-items:center;justify-content:center;gap:7px;border-radius:6px;background:none;color:#7c8fa9;font-size:13px}.mobile-tabs button.active{color:var(--blue);background:#fff;box-shadow:0 1px 4px #1d36550a;font-weight:600}.mobile-tabs svg{width:15px;height:15px}.result-grid{display:block}.suggestion-side{display:none}.result-grid.show-suggestions .paper-panel{display:none}.result-grid.show-suggestions .suggestion-side{display:block}.paper-toolbar{padding:7px 10px}.paper-toolbar strong{font-size:11px}.paper-toolbar>div{gap:0}.paper-scroller{max-height:none;overflow:visible;padding:12px}.paper-caption{font-size:11px;padding:10px 11px}.suggestion-heading{display:none}.suggestion-list{max-height:none;overflow:visible}.suggestion-card{padding:17px}.suggestion-top h3,.suggestion-message,.suggestion-replacement{font-size:12px}.suggestion-original{font-size:13px}.suggestion-subtype,.suggestion-position,.suggestion-note{font-size:11px}.footer{font-size:10px;margin-top:25px}.toast{bottom:22px;font-size:12px;padding:11px 14px}.dialog-backdrop{padding:10px}.dialog{padding:14px;border-radius:12px}.dialog-header h2{font-size:16px}.zoom-tools{gap:5px;flex-wrap:wrap}.zoom-tools .btn{font-size:12px;padding:7px 9px}.zoom-tools>span{font-size:11px;min-width:39px}.zoom-scroll{height:calc(82vh - 160px);padding:10px}.zoom-note{font-size:11px;line-height:1.9}}
/* Readable, constant-size filled labels and fine outlines over handwriting. */
.annotation-line,.annotation-group.active .annotation-line{fill:none;stroke-width:1.3;vector-effect:non-scaling-stroke;pointer-events:all}
.annotation-group.active .annotation-line{stroke-width:1.5}
.annotation-badge{fill:#c16b60;stroke:#fff;stroke-width:1;vector-effect:non-scaling-stroke;pointer-events:all;cursor:pointer}
.annotation-index{fill:#fff;font-weight:700;pointer-events:none}
.annotation-group.active .annotation-badge{fill:var(--blue);stroke:#fff}
.annotation-group.active .annotation-index{fill:#fff}
/* Two-page preparation stays within the single-essay upload panel. */
.page-list{display:grid;gap:9px;margin-bottom:10px}.page-row{display:flex;align-items:center;gap:12px;padding:9px;border:1px solid var(--line);border-radius:9px;background:#fafcff}.page-row>img{width:32px;height:42px;object-fit:contain;border:1px solid #e1e8f2;background:#fff;border-radius:3px}.page-label{display:grid;gap:1px;min-width:0;flex:1}.page-label strong{font-size:12px;font-weight:600}.page-label span{font-size:11px;color:var(--muted);white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.page-row .icon-btn{min-width:40px;width:40px}.page-actions{display:flex;gap:8px;align-items:center;margin-bottom:12px}.page-actions:has(>.hidden:only-child){display:none}

/* Compact correction cards keep the original and revision together. */
.suggestion-side{min-width:0}
.suggestion-heading{margin:3px 0 8px;padding:0 4px}
.suggestion-heading h2{font-size:15px;font-weight:700}
.tone-error{--type-color:#b33b47;--type-bg:#fff0f1;--type-border:#f0c4ca}
.tone-warning{--type-color:#996216;--type-bg:#fff7e9;--type-border:#ead4ae}
.tone-expression{--type-color:#3d62ac;--type-bg:#edf3ff;--type-border:#c8d8f3}
.tone-praise{--type-color:#277b62;--type-bg:#ecf7f2;--type-border:#bcdfd0}
.tone-neutral{--type-color:#57677d;--type-bg:#f0f3f7;--type-border:#d4dce7}
.suggestion-list{gap:8px;padding:3px 7px 12px 3px;scroll-padding-block:6px;scrollbar-width:thin;scrollbar-color:#c5cfdf transparent}
.suggestion-card{position:relative;min-width:0;padding:12px;border:1px solid #e1e7f0;border-radius:11px;background:#fff;box-shadow:0 2px 7px #1e3d650a;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.suggestion-card.active{border-color:#8eafe9;box-shadow:0 4px 15px #2a60b816,0 0 0 1px #a6bfee30}
.suggestion-card:focus-visible{outline:2px solid #7298e3;outline-offset:2px}
.suggestion-top{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:20px;margin-bottom:6px}
.suggestion-number{display:inline-flex;align-items:center;justify-content:center;flex:none;width:20px;height:20px;border-radius:50%;background:var(--type-bg);color:var(--type-color);font-size:10px;font-weight:700;font-variant-numeric:tabular-nums}
.suggestion-top h3.suggestion-kind{max-width:calc(100% - 28px);margin:0 0 0 auto;padding:2px 7px;border-radius:5px;font-size:10px;line-height:1.6;font-weight:700;color:var(--type-color);background:var(--type-bg);overflow-wrap:anywhere}
.suggestion-comparison{display:grid;grid-template-columns:minmax(0,1fr);min-width:0;gap:6px;align-items:stretch}
.suggestion-comparison.has-replacement{grid-template-columns:minmax(0,1fr) 13px minmax(0,1fr)}
.suggestion-comparison.single{grid-template-columns:minmax(0,1fr)}
.suggestion-comparison>.comparison-arrow{align-self:center;width:13px;height:13px;color:#8a9ab0;stroke-width:1.7}
.suggestion-excerpt{min-width:0;margin:0;padding:7px 8px;border-radius:6px;border-left:2px solid #e9d7da;background:#fcf7f7}
.excerpt-label{display:block;margin-bottom:3px;font-size:10px;font-weight:600;letter-spacing:.02em;color:#92757b;line-height:1.4}
.suggestion-original,.suggestion-replacement{padding:0;margin:0;font-size:13px;line-height:1.7;font-weight:400;color:#34445d;background:transparent;border-radius:0;white-space:pre-wrap;overflow-wrap:anywhere}
.changed-text{padding:1px 2px;border-radius:3px;font-weight:750;color:#b6293c;background:#ffe1e5;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.replacement-excerpt{border-color:#c0dfd0;background:#f2f8f5}
.replacement-excerpt .excerpt-label{color:#5c8472}
.suggestion-replacement .changed-text{color:#176745;background:#d9eee1}
.tone-praise .original-excerpt{border-color:#c0dfd0;background:#f2f8f5}
.tone-praise .original-excerpt .excerpt-label{color:#5c8472}
.suggestion-explanation{display:block;padding-top:6px}
.suggestion-message{margin:0;color:#6b7890;font-size:12px;line-height:1.65;white-space:pre-wrap;overflow-wrap:anywhere}
.suggestion-note{padding-left:5px;line-height:1.8}
@media(hover:hover) and (pointer:fine){
 .suggestion-card:hover{transform:translateY(-1px);border-color:#a7bee2;box-shadow:0 6px 18px #274c7c19}
}
@media(max-width:680px){
 .suggestion-list{padding:3px 2px 12px;gap:8px}
 .suggestion-card{padding:12px;border-radius:11px}
 .suggestion-note{margin-bottom:20px}
}
@media(prefers-reduced-motion:reduce){.suggestion-card{transition:none}.suggestion-card:hover{transform:none}}