@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.start{inset-inline-start:var(--spacing)}.end{inset-inline-end:var(--spacing)}.hidden{display:none}}:root{--ink:#242722;--muted:#6d7169;--paper:#f4f0e6;--paper-deep:#e9e1d1;--panel:#fbfaf6;--line:#d8d2c5;--gold:#ae7531;--gold-dark:#80501f;--moss:#4c6654;--stage:#252825}*{box-sizing:border-box}html{background:var(--paper)}body{background:var(--paper);color:var(--ink);margin:0;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif}button,input{font:inherit}button{color:inherit}.app-shell{min-height:100vh}.topbar{border-bottom:1px solid var(--line);background:#f8f5ed;justify-content:space-between;align-items:center;height:76px;padding:0 30px;display:flex}.brand{align-items:center;gap:12px;display:flex}.brand-seal{color:#fff8ea;background:#7a3327;border:1px solid #5f251d;border-radius:4px;place-items:center;width:42px;height:42px;font-family:STKaiti,KaiTi,serif;font-size:25px;display:grid;box-shadow:inset 0 0 0 3px #ffffff29}.brand h1{letter-spacing:.18em;margin:0;font:600 24px/1 STSong,Songti SC,serif}.brand p{color:var(--muted);letter-spacing:.08em;margin:5px 0 0;font-size:12px}.privacy-note{color:var(--moss);align-items:center;gap:8px;font-size:13px;display:flex}.privacy-note span{font-size:9px}.workspace{border-bottom:1px solid var(--line);grid-template-columns:286px minmax(480px,1fr) 320px;min-height:calc(100vh - 76px);display:grid}.control-panel,.preview-panel{background:var(--panel)}.control-panel{border-right:1px solid var(--line);padding:20px}.preview-panel{border-left:1px solid var(--line);padding:20px}.panel-heading,.preview-heading,.editor-toolbar{justify-content:space-between;align-items:center;display:flex}.panel-heading{margin-bottom:14px;font-size:14px;font-weight:700}.step-count{color:var(--muted);font-size:11px;font-weight:500}.upload-card{text-align:center;background:#f6f1e5;border:1px dashed #b8a98e;border-radius:8px;padding:15px;transition:border-color .2s,background .2s}.upload-card.is-dragging{border-color:var(--gold);background:#f0e3cb}.upload-mark{width:32px;height:32px;color:var(--gold-dark);border:1px solid #a79068;border-radius:50%;place-items:center;margin:0 auto 8px;font-size:21px;line-height:1;display:grid}.upload-card strong{font-size:13px;display:block}.upload-card p{color:var(--muted);margin:4px 0 11px;font-size:11px}.full{width:100%}.secondary-button,.primary-button,.download-button{cursor:pointer;border-radius:5px;min-height:38px;transition:transform .15s,background .15s,opacity .15s}.secondary-button{border:1px solid var(--line);background:#fff;font-size:12px}.primary-button{color:#fffaf0;background:var(--moss);border:1px solid #3c5444;justify-content:center;align-items:center;gap:8px;font-size:13px;font-weight:700;display:flex}.primary-button span{font-size:18px}.download-button{color:#fff8ea;background:var(--gold-dark);border:1px solid #673e17;font-size:13px;font-weight:700}.secondary-button:hover,.primary-button:hover,.download-button:hover{transform:translateY(-1px)}button:disabled{opacity:.55;cursor:wait;transform:none!important}.file-chip{border-bottom:1px solid var(--line);align-items:center;gap:10px;padding:11px 2px;display:flex}.file-chip>span:last-child{min-width:0;display:block}.file-chip strong{text-overflow:ellipsis;white-space:nowrap;max-width:210px;font-size:11px;display:block;overflow:hidden}.file-chip small{color:var(--muted);margin-top:2px;font-size:10px;display:block}.paper-icon{background:#e9d4aa;border:1px solid #b49260;border-radius:2px;flex:none;width:24px;height:29px;position:relative}.paper-icon:after{content:"";background:#92724b;height:1px;position:absolute;top:8px;left:5px;right:5px;box-shadow:0 5px #92724b,0 10px #92724b}.control-group{border-bottom:1px solid var(--line);padding:16px 0}.control-group:last-child{border:0}.group-title{align-items:center;gap:8px;margin-bottom:11px;font-size:13px;display:flex}.number{width:21px;height:21px;color:var(--gold-dark);background:#eee2ca;border:1px solid #cfb98e;border-radius:50%;place-items:center;font-size:10px;display:grid}.confidence-row{color:var(--muted);justify-content:space-between;align-items:center;padding-top:8px;font-size:10px;display:flex}.status-dot{background:#aaa;border-radius:50%;width:7px;height:7px}.status-dot.good{background:#5f8067;box-shadow:0 0 0 3px #5f80671f}.helper{color:var(--muted);margin:-2px 0 10px;font-size:10px;line-height:1.65}.corner-grid{grid-template-columns:1fr 1fr;gap:6px;display:grid}.corner-grid button{text-align:left;border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:4px;padding:7px 8px}.corner-grid button.active{box-shadow:inset 3px 0 0 var(--gold);background:#f2e7d3;border-color:#b78a4d}.corner-grid span,.corner-grid small{display:block}.corner-grid span{font-size:10px;font-weight:700}.corner-grid small{color:var(--muted);font-variant-numeric:tabular-nums;margin-top:2px;font-size:9px}.check-row{color:#545a53;cursor:pointer;align-items:center;gap:7px;margin-top:11px;font-size:11px;display:flex}.check-row input{accent-color:var(--moss)}.text-button{color:var(--gold-dark);text-underline-offset:3px;cursor:pointer;background:0 0;border:0;margin:9px 0 0;padding:0;font-size:10px;text-decoration:underline}.segmented{background:#e9e5db;border-radius:5px;grid-template-columns:1fr 1fr;padding:3px;display:grid}.segmented button{color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:3px;padding:6px;font-size:11px}.segmented button.active{color:var(--ink);background:#fff;font-weight:700;box-shadow:0 1px 3px #2d281f1f}.mode-note{min-height:32px;color:var(--muted);margin:9px 1px 0;font-size:9px;line-height:1.55}.export-controls .download-button{margin-top:10px}.editor-panel{background:#30332f;flex-direction:column;min-width:0;display:flex}.editor-toolbar{color:#f4efe3;background:#292c29;border-bottom:1px solid #444842;min-height:66px;padding:13px 20px}.editor-toolbar>div:first-child,.preview-heading>div{flex-direction:column;gap:3px;display:flex}.editor-toolbar strong,.preview-heading strong{letter-spacing:.08em;font:600 15px/1.3 STSong,Songti SC,serif}.eyebrow{color:#9fa59e;letter-spacing:.16em;text-transform:uppercase;font-size:9px}.toolbar-tip{color:#aeb2ab;align-items:center;gap:3px;font-size:9px;display:flex}kbd{min-width:19px;height:19px;font:inherit;background:#3c403b;border:1px solid #555b54;border-radius:3px;place-items:center;display:inline-grid}.toolbar-tip span{margin-left:5px}.canvas-stage{background-color:var(--stage);background-image:linear-gradient(#ffffff06 1px,#0000 1px),linear-gradient(90deg,#ffffff06 1px,#0000 1px);background-size:26px 26px;flex:1;place-items:center;min-height:540px;padding:20px;display:grid;overflow:hidden}.canvas-stage canvas{touch-action:none;cursor:crosshair;outline:0;max-width:100%;display:block;box-shadow:0 14px 38px #00000052}.canvas-stage canvas:focus{box-shadow:0 0 0 2px #d8a95e,0 14px 38px #00000061}.canvas-stage canvas.is-adjusting{cursor:grabbing}.editor-status{color:#c5c8c1;background:#292c29;border-top:1px solid #444842;justify-content:space-between;align-items:center;gap:16px;min-height:38px;padding:8px 20px;font-size:10px;display:flex}.editor-status span:last-child{color:#858b83;text-align:right}.preview-heading{min-height:46px;margin-bottom:13px}.preview-heading .eyebrow{color:var(--muted)}.ready-badge{color:var(--moss);background:#e4ede5;border:1px solid #c8d9cb;border-radius:3px;padding:4px 7px;font-size:9px;font-weight:700}.preview-stage{background-color:#dfdbd1;background-image:linear-gradient(45deg,#d5d0c5 25%,#0000 25%),linear-gradient(-45deg,#d5d0c5 25%,#0000 25%),linear-gradient(45deg,#0000 75%,#d5d0c5 75%),linear-gradient(-45deg,#0000 75%,#d5d0c5 75%);background-position:0 0,0 8px,8px -8px,-8px 0;background-size:16px 16px;border:1px solid #cbc5b8;place-items:center;height:420px;padding:14px;display:grid;overflow:hidden}.preview-stage canvas{background:#eee5d2;width:auto;max-width:100%;height:auto;max-height:100%;display:block;box-shadow:0 7px 20px #322a1c33}.result-stats{border-top:1px solid var(--line);margin-top:14px}.result-stats>div{border-bottom:1px solid var(--line);grid-template-rows:auto auto;grid-template-columns:1fr auto;align-items:center;padding:11px 1px;display:grid}.result-stats span{color:var(--muted);grid-row:1/span 2;font-size:10px}.result-stats strong{font-variant-numeric:tabular-nums;font-size:11px}.result-stats small{color:#999b96;text-align:right;margin-top:2px;font-size:8px}.preservation-note{background:#f0eadc;border:1px solid #ddd0b6;border-radius:5px;gap:10px;margin-top:14px;padding:12px;display:flex}.note-mark{color:#8a3d2d;border:1px solid #a95b49;border-radius:50%;flex:none;place-items:center;width:30px;height:30px;font:600 14px/1 STKaiti,KaiTi,serif;display:grid}.preservation-note p{color:#68685f;margin:0;font-size:9px;line-height:1.65}.preservation-note strong{color:var(--ink);font-size:10px;display:block}@media (max-width:1180px){.workspace{grid-template-columns:270px minmax(430px,1fr)}.preview-panel{border-left:0;border-top:1px solid var(--line);grid-column:1/-1;grid-template-columns:260px minmax(300px,520px) 1fr;align-items:start;gap:18px;display:grid}.preview-heading{align-content:start}.preview-stage{height:360px}.result-stats{margin-top:0}.preservation-note{grid-column:3}}@media (max-width:760px){.topbar{height:auto;min-height:70px;padding:12px 16px}.privacy-note{text-align:right;justify-content:flex-end;max-width:150px;font-size:10px}.workspace{flex-direction:column;display:flex}.control-panel,.preview-panel{border:0}.control-panel{order:1;padding:16px}.editor-panel{order:2}.preview-panel{border-top:1px solid var(--line);order:3;padding:16px;display:block}.canvas-stage{min-height:430px;padding:12px}.editor-toolbar,.editor-status{padding-left:14px;padding-right:14px}.toolbar-tip{display:none}.preview-stage{height:460px}.preservation-note{margin-bottom:8px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important}}