/*! tailwindcss v4.2.1 | MIT License | https://tailwindcss.com */
@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after{--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial;--tw-border-style:solid;--tw-shadow:0 0 #0000;--tw-shadow-color:initial;--tw-shadow-alpha:100%;--tw-inset-shadow:0 0 #0000;--tw-inset-shadow-color:initial;--tw-inset-shadow-alpha:100%;--tw-ring-color:initial;--tw-ring-shadow:0 0 #0000;--tw-inset-ring-color:initial;--tw-inset-ring-shadow:0 0 #0000;--tw-ring-inset:initial;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-outline-style:solid;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial;--tw-backdrop-blur:initial;--tw-backdrop-brightness:initial;--tw-backdrop-contrast:initial;--tw-backdrop-grayscale:initial;--tw-backdrop-hue-rotate:initial;--tw-backdrop-invert:initial;--tw-backdrop-opacity:initial;--tw-backdrop-saturate:initial;--tw-backdrop-sepia:initial}::backdrop{--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial;--tw-border-style:solid;--tw-shadow:0 0 #0000;--tw-shadow-color:initial;--tw-shadow-alpha:100%;--tw-inset-shadow:0 0 #0000;--tw-inset-shadow-color:initial;--tw-inset-shadow-alpha:100%;--tw-ring-color:initial;--tw-ring-shadow:0 0 #0000;--tw-inset-ring-color:initial;--tw-inset-ring-shadow:0 0 #0000;--tw-ring-inset:initial;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-outline-style:solid;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial;--tw-backdrop-blur:initial;--tw-backdrop-brightness:initial;--tw-backdrop-contrast:initial;--tw-backdrop-grayscale:initial;--tw-backdrop-hue-rotate:initial;--tw-backdrop-invert:initial;--tw-backdrop-opacity:initial;--tw-backdrop-saturate:initial;--tw-backdrop-sepia:initial}}}@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{box-sizing:border-box;border:0 solid;margin:0;padding:0}::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{.invisible{visibility:hidden}.visible{visibility:visible}.absolute{position:absolute}.relative{position:relative}.static{position:static}.start{inset-inline-start:var(--spacing)}.end{inset-inline-end:var(--spacing)}.block{display:block}.flex{display:flex}.hidden{display:none}.inline{display:inline}.table{display:table}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.truncate{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.border{border-style:var(--tw-border-style);border-width:1px}.italic{font-style:italic}.line-through{text-decoration-line:line-through}.overline{text-decoration-line:overline}.underline{text-decoration-line:underline}.ring{--tw-ring-shadow:var(--tw-ring-inset,) 0 0 0 calc(1px + var(--tw-ring-offset-width)) var(--tw-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.outline{outline-style:var(--tw-outline-style);outline-width:1px}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.backdrop-filter{-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}}:root{--canvas:#f2f2f2;--paper:#fff;--paper-soft:#f7f7f7;--ink:#111;--ink-2:#2d2d2d;--muted:#747474;--line:#e1e1e1;--line-dark:#c7c7c7;--accent:#111;--accent-soft:#ededed;--green-soft:#f1f1f1;--gold:#555;--shadow:0 20px 60px #0000001f}*{box-sizing:border-box}html,body{background:var(--canvas);min-height:100%;color:var(--ink);margin:0;font-family:Inter,SF Pro Display,PingFang SC,Microsoft YaHei,system-ui,sans-serif}button,input,textarea{color:inherit;font:inherit}button{cursor:pointer}::selection{color:#000;background:#1111112e}.app-shell{background:var(--canvas);min-height:100vh}.topbar{border-bottom:1px solid var(--line);z-index:30;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#fffdf8f2;grid-template-columns:270px minmax(360px,1fr) auto;align-items:center;height:72px;padding:0 22px;display:grid;position:sticky;top:0}.brand-lockup{align-items:center;gap:11px;display:flex}.brand-mark{background:var(--ink);color:#fff;border-radius:6px;justify-content:center;align-items:center;width:42px;height:42px;font-family:STKaiti,KaiTi,serif;font-size:23px;display:flex;transform:none;box-shadow:inset 0 0 0 1px #ffffff26}.brand-name{letter-spacing:.08em;font-family:STKaiti,KaiTi,serif;font-size:20px;font-weight:700}.brand-subtitle{color:var(--muted);letter-spacing:.04em;margin-top:1px;font-size:10px}.study-tabs{justify-content:center;align-self:stretch;align-items:stretch;gap:28px;display:flex}.study-tabs button{color:#6f7772;background:0 0;border:0;padding:2px 2px 0;font-size:14px;font-weight:650;position:relative}.study-tabs button:after{background:var(--accent);content:"";border-radius:3px 3px 0 0;width:28px;height:3px;transition:transform .16s;position:absolute;bottom:0;left:50%;transform:translate(-50%)scaleX(0)}.study-tabs button.active{color:var(--ink)}.study-tabs button.active:after{transform:translate(-50%)scaleX(1)}.top-actions{justify-content:flex-end;align-items:center;gap:10px;display:flex}.sync-status{color:var(--muted);align-items:center;gap:6px;margin-right:2px;font-size:12px;display:flex}.sync-status span{background:#4b9a75;border-radius:50%;width:6px;height:6px}.sync-status.model-loading span{background:var(--gold);animation:1.1s ease-in-out infinite enginePulse}@keyframes enginePulse{50%{opacity:.35;transform:scale(.72)}}.ghost-button,.primary-button{border-radius:9px;justify-content:center;align-items:center;gap:4px;height:38px;padding:0 14px;font-size:13px;font-weight:700;display:inline-flex}.ghost-button{border:1px solid var(--line-dark);background:0 0}.primary-button{background:var(--ink);border:1px solid var(--ink);color:#fff}.workspace{grid-template-columns:240px minmax(470px,1fr) minmax(340px,420px);min-height:calc(100vh - 72px);display:grid}.library-panel{border-right:1px solid var(--line);background:#f8f6eff0;flex-direction:column;padding:18px 14px;display:flex}.profile-switch{background:var(--paper);border:1px solid var(--line);border-radius:12px;grid-template-columns:33px 1fr auto;align-items:center;gap:9px;padding:10px;display:grid;box-shadow:0 5px 18px #2634300d}.profile-dot{background:var(--accent-soft);color:var(--accent);border-radius:9px;justify-content:center;align-items:center;width:32px;height:32px;font-family:STKaiti,KaiTi,serif;display:flex}.profile-switch strong,.profile-switch small{display:block}.profile-switch strong{font-size:13px}.profile-switch small{color:var(--muted);margin-top:2px;font-size:10px}.chevron{color:var(--muted)}.library-heading{color:#717a75;letter-spacing:.08em;text-transform:uppercase;justify-content:space-between;align-items:center;margin:24px 8px 10px;font-size:11px;font-weight:700;display:flex}.library-heading button{color:var(--ink);background:0 0;border:0;font-size:19px}.library-group{margin-bottom:18px}.year-row{color:var(--ink-2);justify-content:space-between;align-items:center;padding:5px 8px;font-size:12px;font-weight:750;display:flex}.year-row small{color:var(--muted);font-weight:500}.library-item{text-align:left;background:0 0;border:0;border-radius:10px;grid-template-columns:28px 1fr auto;align-items:center;gap:9px;width:100%;margin:2px 0;padding:9px 8px;display:grid}.library-item:hover{background:#ffffffb3}.library-item.active{background:var(--paper);box-shadow:0 5px 18px #26343014}.library-item.disabled{opacity:.48}.item-number{border:1px solid var(--line);color:var(--muted);border-radius:7px;justify-content:center;align-items:center;width:27px;height:27px;font-family:Georgia,serif;font-size:11px;display:flex}.library-item.active .item-number{background:var(--ink);border-color:var(--ink);color:#fff}.library-item strong,.library-item small{display:block}.library-item strong{font-size:12px}.library-item small{color:var(--muted);margin-top:2px;font-size:10px}.verified-dot{background:#54a077;border:3px solid #dfece4;border-radius:50%;width:11px;height:11px}.verified-dot.local{background:var(--gold);border-color:#f5ead8}.progress-ring{background:conic-gradient(var(--accent) 68%, #e7e5dd 0);color:var(--ink);border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;font-size:8px;display:flex;position:relative}.progress-ring:before{background:var(--paper);content:"";border-radius:50%;position:absolute;inset:3px}.progress-ring{z-index:0}.progress-ring:after{content:"68";z-index:1;position:absolute}.library-summary{color:var(--muted);background:0 0;border:0;border-radius:8px;justify-content:space-between;align-items:center;width:100%;padding:8px;font-size:11px;display:flex}.database-card{background:#e8eee9;border:1px solid #d2dfd7;border-radius:12px;margin-top:auto;padding:13px}.database-topline{align-items:center;gap:6px;font-size:11px;font-weight:700;display:flex}.database-icon{background:var(--ink);color:#fff;border-radius:5px;justify-content:center;align-items:center;width:20px;height:20px;font-size:9px;display:flex}.live-pill{color:#3f7d60;background:#4a926d24;border-radius:10px;margin-left:auto;padding:3px 6px;font-size:8px}.database-card>strong{margin-top:13px;font-size:13px;display:block}.database-card p{color:#64716a;margin:4px 0 10px;font-size:10px;line-height:1.5}.database-meter{background:#d5dfd8;border-radius:10px;height:4px;overflow:hidden}.database-meter span{background:var(--ink);border-radius:inherit;width:42%;height:100%;display:block}.reader-panel{background:var(--paper);grid-template-rows:auto 1fr auto;min-width:0;display:grid}.reader-toolbar{border-bottom:1px solid var(--line);justify-content:space-between;align-items:flex-start;padding:24px 34px 20px;display:flex}.reader-kicker{color:var(--muted);letter-spacing:.03em;align-items:center;gap:7px;font-size:10px;display:flex}.verified-badge{color:#3f7b5e;background:#e5f1e9;border-radius:10px;padding:3px 7px;font-weight:700}.verified-badge.pending{color:#8c642e;background:#f4ead9}.reader-toolbar h1{letter-spacing:-.02em;margin:10px 0 5px;font-family:Iowan Old Style,Palatino Linotype,Georgia,STSong,serif;font-size:clamp(23px,2vw,30px)}.reader-toolbar p{color:var(--muted);margin:0;font-size:12px}.reader-controls{align-items:center;gap:7px;display:flex}.translation-toggle{background:var(--paper-soft);border:1px solid var(--line);color:var(--ink-2);border-radius:8px;align-items:center;gap:6px;height:34px;padding:0 9px;font-size:10px;font-weight:650;display:flex}.translation-toggle input{opacity:0;width:0;height:0;position:absolute}.translation-toggle>span{background:#c8cbc5;border-radius:20px;width:27px;height:15px;position:relative}.translation-toggle>span:after{content:"";background:#fff;border-radius:50%;width:11px;height:11px;transition:transform .15s;position:absolute;top:2px;left:2px;box-shadow:0 1px 3px #0000002e}.translation-toggle input:checked+span{background:var(--ink)}.translation-toggle input:checked+span:after{transform:translate(12px)}.reader-controls button{background:var(--paper-soft);border:1px solid var(--line);border-radius:8px;min-width:34px;height:34px;font-family:Georgia,serif}.reader-controls button.generate-study-button{background:var(--ink);border-color:var(--ink);color:#fff;padding:0 11px;font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,sans-serif;font-size:10px;font-weight:700}.reader-controls button.generate-study-button:disabled{cursor:wait;opacity:.65}.article-content{scroll-behavior:smooth;width:100%;max-width:790px;padding:24px clamp(32px,5vw,68px) 60px;overflow-y:auto}.selection-tip{color:#597169;background:#f0f5f2;border:1px solid #dfe9e3;border-radius:8px;align-items:center;gap:7px;margin-bottom:25px;padding:9px 11px;font-size:10px;display:flex}.pen-dot{color:var(--accent);font-size:12px}.paragraph-block{grid-template-columns:23px 1fr;gap:17px;margin-bottom:28px;display:grid}.paragraph-index{color:#b1b5ae;padding-top:7px;font-family:Georgia,serif;font-size:10px}.paragraph-copy{color:#273d39;font-family:Iowan Old Style,Palatino Linotype,Georgia,serif;font-size:17.5px;line-height:1.82}.sentence-wrap{display:inline}.english-sentence{border-radius:3px;transition:background .12s}.reader-highlight{color:inherit;background:linear-gradient(#0000 34%,#ecbf536b 34% 92%,#0000 92%);border-radius:2px;padding:0 1px}.sentence-translation{color:#7c837d;letter-spacing:.01em;margin:2px 0 10px;padding-left:12px;font-family:PingFang SC,Microsoft YaHei,sans-serif;font-size:11px;line-height:1.75;display:block;position:relative}.sentence-translation:before{content:"";background:#d5d7d1;width:2px;height:calc(100% - 6px);position:absolute;top:3px;left:0}.try-selection{border-top:1px dashed var(--line);flex-wrap:wrap;align-items:center;gap:7px;margin:8px 0 0 40px;padding-top:18px;display:flex}.try-selection>span{color:var(--muted);margin-right:2px;font-size:10px;font-weight:700}.try-selection button{border:1px solid var(--line);color:var(--ink-2);background:#f7f4ed;border-radius:16px;padding:6px 9px;font-size:10px}.try-selection button:hover{background:var(--accent-soft);color:#a84930;border-color:#f0c3b5}.reader-footer{border-top:1px solid var(--line);color:var(--muted);background:#fffdf8f0;justify-content:space-between;align-items:center;padding:10px 30px;font-size:9px;display:flex}.reading-progress{align-items:center;gap:8px;display:flex}.reading-progress>div{background:#e3e2dc;border-radius:8px;width:120px;height:4px;overflow:hidden}.reading-progress>div span{background:var(--accent);width:68%;height:100%;display:block}.reading-progress strong{color:var(--ink)}.insight-panel{border-left:1px solid var(--line);background:#f7f5ee;min-width:0;overflow:hidden}.insight-view,.questions-view,.cards-view,.notes-view{height:calc(100vh - 72px);padding:22px 22px 40px;overflow-y:auto}.insight-header{justify-content:space-between;align-items:center;display:flex}.insight-header>div{gap:6px;display:flex}.insight-header>button{color:var(--muted);background:0 0;border:0;font-size:23px}.kind-pill,.context-pill{border-radius:11px;padding:4px 8px;font-size:9px;font-weight:750;display:inline-block}.kind-pill{background:var(--ink);color:#fff}.kind-pill.word{background:#376a58}.context-pill{color:var(--muted);background:#e8e7e0}.insight-title{border-bottom:1px solid var(--line);padding:25px 0 21px}.insight-title>span{color:var(--accent);letter-spacing:.1em;text-transform:uppercase;margin-bottom:9px;font-size:9px;font-weight:800;display:block}.insight-title h2{margin:0;font-family:Iowan Old Style,Palatino Linotype,Georgia,STSong,serif;font-size:clamp(22px,2vw,28px);line-height:1.2}.insight-title p{color:var(--muted);margin:7px 0 0;font-size:11px;line-height:1.6}.insight-sections{gap:10px;padding:16px 0;display:grid}.insight-sections section{border:1px solid var(--line);border-radius:10px;padding:12px 13px}.insight-sections section.highlight-section{background:var(--accent-soft);border-color:#f0d3c7}.insight-sections h3{color:var(--ink);letter-spacing:.04em;margin:0 0 6px;font-size:10px}.insight-sections p{color:#56615c;white-space:pre-line;margin:0;font-size:11px;line-height:1.75}.insight-sections section.warning-section{background:#fff7e7;border-color:#ead5a2}.insight-actions{grid-template-columns:1fr 1fr 1fr;gap:8px;margin-bottom:17px;display:grid}.insight-actions button{border-radius:9px;height:39px;font-size:11px;font-weight:700}.save-card-button{background:var(--ink);border:1px solid var(--ink);color:#fff}.highlight-button{color:#77551f;background:#fff4d8;border:1px solid #e6cf99}.note-anchor-button{border:1px solid var(--line-dark);background:0 0}.source-trace{border-top:1px solid var(--line);color:var(--muted);justify-content:space-between;align-items:center;padding-top:13px;font-size:9px;display:flex}.source-trace>div{align-items:center;gap:8px;display:flex}.trace-icon{color:var(--ink-2);background:#e6e8e2;border-radius:6px;justify-content:center;align-items:center;width:26px;height:26px;display:flex}.source-trace small,.source-trace strong{display:block}.source-trace strong{color:var(--ink-2);margin-top:2px;font-size:9px}.side-view-heading{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.side-view-heading span{font-family:STKaiti,KaiTi,serif;font-size:20px;font-weight:700}.side-view-heading strong{color:var(--muted);background:#e7e9e3;border-radius:10px;padding:4px 8px;font-size:9px}.question-score{background:var(--ink);color:#fff;border-radius:12px;grid-template-columns:62px 1fr;align-items:center;gap:15px;margin-bottom:13px;padding:14px;display:grid}.question-score>div{border-right:1px solid #ffffff2e}.question-score strong,.question-score span{display:block}.question-score strong{font-family:Georgia,serif;font-size:22px}.question-score span{color:#b9cbc5;margin-top:2px;font-size:8px}.question-score p{color:#d8e2de;margin:0;font-size:9px;line-height:1.55}.question-list{gap:8px;display:grid}.question-card{background:var(--paper);border:1px solid var(--line);border-radius:10px;overflow:hidden}.question-card>button{text-align:left;background:0 0;border:0;grid-template-columns:29px 1fr auto;align-items:center;gap:9px;width:100%;padding:11px;display:grid}.question-number{background:var(--paper-soft);border-radius:7px;justify-content:center;align-items:center;width:29px;height:29px;font-family:Georgia,serif;font-size:10px;display:flex}.question-card.expanded .question-number{background:var(--accent-soft);color:var(--accent)}.question-card button strong,.question-card button small{display:block}.question-card button strong{font-size:10px;line-height:1.45}.question-card button small{color:var(--muted);margin-top:3px;font-size:8px}.question-chevron{color:var(--muted)}.question-detail{border-top:1px solid var(--line);padding:12px}.answer-line{background:#edf3ef;border-radius:8px;align-items:center;gap:8px;margin-bottom:11px;padding:9px;display:flex}.answer-line span{background:var(--ink);color:#fff;border-radius:5px;justify-content:center;align-items:center;width:23px;height:23px;font-family:Georgia,serif;font-size:11px;display:flex}.answer-line strong{font-size:10px}.question-detail h4{margin:10px 0 4px;font-size:9px}.question-detail p{color:#606963;margin:0;font-size:9px;line-height:1.65}.empty-state{border:1px dashed var(--line-dark);text-align:center;border-radius:14px;flex-direction:column;align-items:center;margin-top:30px;padding:34px 24px;display:flex}.empty-state>span{background:var(--green-soft);color:var(--ink);border-radius:50%;justify-content:center;align-items:center;width:52px;height:52px;font-family:Georgia,serif;font-size:22px;display:flex}.empty-state h3{margin:14px 0 5px;font-size:14px}.empty-state p{color:var(--muted);margin:0 0 15px;font-size:10px;line-height:1.6}.empty-state button,.note-composer button{background:var(--ink);color:#fff;border:0;border-radius:8px;padding:9px 12px;font-size:10px;font-weight:700}.saved-list{gap:10px;display:grid}.saved-card{background:var(--paper);border:1px solid var(--line);border-radius:11px;padding:13px}.saved-card>div{justify-content:space-between;align-items:center;display:flex}.saved-card>div span{color:var(--accent);font-size:8px;font-weight:700}.saved-card>div button{color:var(--muted);background:0 0;border:0;font-size:17px}.saved-card h3{margin:8px 0 5px;font-family:Georgia,serif;font-size:18px}.saved-card p{color:#626b66;margin:0 0 8px;font-size:10px;line-height:1.65}.saved-card small{color:#9a9f9a;font-size:8px}.note-composer{background:var(--paper);border:1px solid var(--line);border-radius:12px;gap:8px;margin-bottom:15px;padding:13px;display:grid}.note-composer label{font-size:10px;font-weight:700}.note-composer textarea{background:var(--paper-soft);border:1px solid var(--line);resize:vertical;border-radius:8px;outline:none;min-height:110px;padding:10px}.note-composer textarea:focus,.title-input:focus,.import-textarea:focus{border-color:#8a9f97;box-shadow:0 0 0 3px #173b3612}.note-composer button{justify-self:end}.note-list{border-top:1px solid var(--line);padding-top:14px}.focus-mode .library-panel{display:none}.focus-mode .workspace{grid-template-columns:minmax(540px,1fr) minmax(360px,440px)}.modal-backdrop{z-index:60;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#1025218c;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.import-modal{background:var(--paper);box-shadow:var(--shadow);border:1px solid #fff9;border-radius:18px;width:min(620px,100%);max-height:calc(100vh - 48px);padding:24px;overflow-y:auto}.modal-heading{justify-content:space-between;align-items:flex-start;margin-bottom:20px;display:flex}.modal-heading>div>span{color:var(--accent);letter-spacing:.08em;font-size:9px;font-weight:800}.modal-heading h2{margin:5px 0;font-family:STKaiti,KaiTi,serif;font-size:25px}.modal-heading p{color:var(--muted);margin:0;font-size:10px;line-height:1.5}.modal-heading>button{background:var(--paper-soft);border:1px solid var(--line);border-radius:8px;width:32px;height:32px;font-size:20px}.field-label{margin-bottom:6px;font-size:10px;font-weight:750;display:block}.title-input,.import-textarea{border:1px solid var(--line-dark);background:#fff;border-radius:9px;outline:none;width:100%}.title-input{height:40px;padding:0 11px}.import-divider{color:#9a9f9a;align-items:center;gap:10px;margin:16px 0 10px;font-size:9px;display:flex}.import-divider:before,.import-divider:after{background:var(--line);content:"";flex:1;height:1px}.import-textarea{resize:vertical;min-height:160px;padding:12px;font-family:Georgia,serif;font-size:12px;line-height:1.6}.file-drop{background:var(--paper-soft);border:1px dashed var(--line-dark);border-radius:10px;align-items:center;gap:11px;margin-top:10px;padding:12px;display:flex}.page-range-field{margin-top:13px}.page-range-field small{color:var(--muted);margin-top:5px;font-size:9px;line-height:1.5;display:block}.file-drop input{opacity:0;width:1px;height:1px;position:absolute}.file-icon{background:var(--green-soft);border-radius:8px;justify-content:center;align-items:center;width:34px;height:34px;display:flex}.file-drop strong,.file-drop small{display:block}.file-drop strong{font-size:10px}.file-drop small{color:var(--muted);margin-top:2px;font-size:8px}.modal-actions{justify-content:flex-end;gap:8px;margin-top:18px;display:flex}.import-processing{text-align:center;flex-direction:column;align-items:center;min-height:340px;padding:35px 10px 10px;display:flex}.processing-orbit{border:1px dashed #a2b4ad;border-radius:50%;justify-content:center;align-items:center;width:78px;height:78px;display:flex;position:relative}.processing-orbit:after{background:var(--accent);border:3px solid var(--paper);content:"";transform-origin:33px 33px;border-radius:50%;width:12px;height:12px;animation:1.7s linear infinite orbit;position:absolute;top:5px;left:5px}.processing-orbit span{background:var(--ink);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:52px;height:52px;font-family:Georgia,serif;display:flex}@keyframes orbit{to{transform:rotate(360deg)}}.import-processing h3{margin:18px 0 4px;font-family:STKaiti,KaiTi,serif;font-size:22px}.import-processing>p{color:var(--muted);margin:0 0 22px;font-size:10px}.processing-steps{text-align:left;gap:9px;width:min(330px,100%);display:grid}.processing-steps>div{color:#a1a59f;align-items:center;gap:9px;font-size:10px;display:flex}.processing-steps>div>span{border:1px solid var(--line-dark);border-radius:50%;justify-content:center;align-items:center;width:20px;height:20px;display:flex}.processing-steps>div.done{color:var(--ink)}.processing-steps>div.done>span{background:var(--green-soft);color:#3f7b5e;border-color:#cbded3}.toast{background:var(--ink);color:#fff;z-index:80;border-radius:9px;padding:10px 14px;font-size:11px;position:fixed;bottom:22px;left:50%;transform:translate(-50%);box-shadow:0 10px 30px #173b3640}.engine-modal{width:min(720px,100%)}.capability-grid{grid-template-columns:repeat(3,1fr);gap:9px;margin-bottom:14px;display:grid}.capability-grid>div{background:var(--paper-soft);border:1px solid var(--line);border-radius:11px;flex-direction:column;min-height:92px;padding:12px;display:flex}.capability-grid span,.capability-grid small{color:var(--muted);font-size:9px}.capability-grid strong{margin:8px 0 4px;font-size:14px}.capability-grid strong.ok{color:#3f7b5e}.capability-grid strong.warn{color:#a14f3b}.engine-section{border:1px solid var(--line);border-radius:13px;margin-top:11px;padding:14px}.engine-section-heading,.data-safety-section{justify-content:space-between;align-items:center;gap:12px;display:flex}.engine-section-heading strong,.engine-section-heading small{display:block}.engine-section-heading strong{font-size:12px}.engine-section-heading small{color:var(--muted);margin-top:3px;font-size:9px}.engine-state{color:var(--muted);background:#ecebe5;border-radius:12px;flex:none;padding:5px 8px;font-size:9px;font-weight:750}.engine-state.ready{color:#357657;background:#e2efe7}.engine-state.loading{color:#8c642e;background:#fff0d8}.engine-state.error{color:#9b5146;background:#f7e3de}.model-options{grid-template-columns:1fr 1fr;gap:8px;margin-top:12px;display:grid}.model-options button{border:1px solid var(--line);text-align:left;background:#fff;border-radius:10px;padding:11px}.model-options span,.model-options small{display:block}.model-options span{font-size:11px;font-weight:750}.model-options small{color:var(--muted);margin-top:4px;font-size:9px;line-height:1.55}.model-progress{margin-top:13px}.model-progress>div{background:#e7e6df;border-radius:8px;height:6px;overflow:hidden}.model-progress>div span{background:linear-gradient(90deg, var(--ink), #4f8a76);border-radius:inherit;height:100%;transition:width .18s;display:block}.model-progress small{color:var(--muted);margin-top:6px;font-size:9px;line-height:1.5;display:block}.engine-start-button{width:100%;margin-top:13px}.engine-start-button:disabled{cursor:not-allowed;opacity:.5}.data-safety-section strong{font-size:11px}.data-safety-section p{color:var(--muted);margin:4px 0 0;font-size:9px;line-height:1.55}.phase-note{background:#fff6e6;border:1px solid #ead8b1;border-radius:11px;margin-top:11px;padding:12px 13px}.phase-note strong{font-size:10px}.phase-note p{color:#756446;margin:4px 0 0;font-size:9px;line-height:1.6}@media (max-width:1180px){.workspace{grid-template-columns:minmax(500px,1fr) minmax(340px,405px)}.library-panel{display:none}.topbar{grid-template-columns:220px 1fr auto}.sync-status,.top-actions .ghost-button:not(.engine-button){display:none}.study-tabs{gap:18px}}@media (max-width:820px){.topbar{grid-template-columns:1fr auto;height:64px;padding:0 13px}.brand-subtitle{display:none}.study-tabs{background:var(--paper);border-top:1px solid var(--line);z-index:50;justify-content:space-around;height:58px;position:fixed;bottom:0;left:0;right:0}.study-tabs button{font-size:11px}.top-actions .primary-button{height:35px;padding:0 10px;font-size:11px}.top-actions .engine-button{display:none}.workspace,.focus-mode .workspace{display:block}.reader-panel{min-height:calc(100vh - 64px);padding-bottom:58px}.insight-panel{pointer-events:none;z-index:20;border-left:0;position:fixed;inset:64px 0 58px}.insight-panel>div{background:var(--paper);opacity:0;pointer-events:none;height:100%;transform:translateY(12px)}:is(.app-shell:has(.study-tabs button:nth-child(2).active) .questions-view,.app-shell:has(.study-tabs button:nth-child(3).active) .cards-view,.app-shell:has(.study-tabs button:nth-child(4).active) .notes-view){opacity:1;pointer-events:auto;transform:translateY(0)}.insight-panel .insight-view{background:var(--paper);opacity:1;pointer-events:auto;border-radius:18px 18px 0 0;height:min(62vh,560px);transition:transform .18s;position:absolute;bottom:0;left:0;right:0;transform:translateY(calc(100% - 78px));box-shadow:0 -15px 50px #173b362e}.insight-panel .insight-view:hover,.insight-panel .insight-view:focus-within,.insight-panel .insight-view.mobile-open{transform:translateY(0)}.reader-toolbar{padding:20px}.reader-controls{display:none}.article-content{padding:20px 20px 120px}.paragraph-copy{font-size:17px}.capability-grid,.model-options{grid-template-columns:1fr}}.topbar{background:#fffffff5}.library-panel,.insight-panel{background:#f7f7f7}.brand-name,.side-view-heading span,.modal-heading h2,.import-processing h3{font-family:Inter,SF Pro Display,PingFang SC,Microsoft YaHei,system-ui,sans-serif}.brand-name{letter-spacing:.02em;font-size:18px}.profile-dot,.file-icon,.empty-state>span{color:#111;background:#eee}.sync-status span,.verified-dot,.model-progress>div span,.database-meter span{background:#111}.sync-status.model-loading span,.verified-dot.local{background:#777}.sync-status.model-ready span{background:#111;box-shadow:0 0 0 4px #11111114}.database-card{background:#eee;border-color:#d7d7d7}.database-icon,.question-score,.answer-line span,.processing-orbit span{color:#fff;background:#111}.live-pill,.verified-badge,.verified-badge.pending,.context-pill,.engine-state,.engine-state.ready,.engine-state.loading,.engine-state.error{color:#333;background:#e9e9e9}.selection-tip{color:#555;background:#f5f5f5;border-color:#dedede}.pen-dot,.insight-title>span,.saved-card>div span{color:#111}.try-selection button:hover,.insight-sections section.highlight-section,.insight-sections section.warning-section,.answer-line,.phase-note{color:#222;background:#f1f1f1;border-color:#cfcfcf}.kind-pill,.kind-pill.word{color:#fff;background:#111}.kind-pill.phrase{background:#383838}.kind-pill.sentence{background:#5a5a5a}.kind-pill.invalid{background:#777}.reader-highlight{background:linear-gradient(#0000 34%,#1113 34% 92%,#0000 92%)}.highlight-button{color:#222;background:#fff;border-color:#9b9b9b}.model-options button.selected{background:#efefef;border-color:#555;box-shadow:inset 0 0 0 1px #555}.model-progress>div{background:#dedede}.model-progress>div span{background:#111}.phase-note p{color:#555}.processing-orbit{border-color:#999}.processing-orbit:after{background:#111}.toast{background:#111;box-shadow:0 10px 30px #00000038}.modal-backdrop{background:#00000094}.study-tabs button,.library-heading,.database-card p,.selection-tip,.sentence-translation,.insight-sections p,.question-detail p,.saved-card p,.saved-card small,.processing-steps>div,.capability-grid strong.warn{color:#6f6f6f}.paragraph-copy,.processing-steps>div.done,.capability-grid strong.ok{color:#222}.question-score span,.question-score p{color:#d7d7d7}.title-input:focus,.import-textarea:focus,.note-composer textarea:focus{border-color:#555;box-shadow:0 0 0 3px #0000000f}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-backdrop-blur{syntax:"*";inherits:false}@property --tw-backdrop-brightness{syntax:"*";inherits:false}@property --tw-backdrop-contrast{syntax:"*";inherits:false}@property --tw-backdrop-grayscale{syntax:"*";inherits:false}@property --tw-backdrop-hue-rotate{syntax:"*";inherits:false}@property --tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}