:root{--navy:#17233b;--navy-2:#22304a;--amber:#d97835;--paper:#f7f3ea;--canvas:#f2f1ed;--ink:#202a3b;--muted:#737b88;--line:#deddd7;--sage:#3f765c;--white:#fff;--shadow:0 24px 60px rgba(32,42,59,.10);font-family:Inter,"SF Pro Display","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--canvas)}
.ai-preferences{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;align-items:stretch;margin:12px 0}.ai-preferences>.field{margin:0}.ai-toggle{display:flex;align-items:center;gap:9px;border:1px solid var(--line);border-radius:8px;padding:10px;background:#fafaf7}.ai-toggle input{width:16px;height:16px;flex:0 0 auto}.ai-toggle input:disabled{opacity:.45}.ai-toggle:has(input:disabled){opacity:.7}.ai-toggle b,.ai-toggle small{display:block;font-size:11px}.ai-toggle small{margin-top:3px;color:var(--muted);line-height:1.4}.ai-auto-image{grid-column:2/4}
.ai-progress,.ai-error{display:flex;flex-direction:column;gap:5px;border:1px solid var(--line);border-radius:8px;padding:14px}.ai-progress span,.ai-error span,.ai-research-message{font-size:11px;color:var(--muted)}.ai-error{border-color:#d9a6a2;background:#fff5f4}.ai-result-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.ai-result-head h3{margin:4px 0 0}.research-status{flex:0 0 auto;border-radius:999px;padding:6px 9px;font-size:10px;font-weight:800}.research-status.verified{background:#e0f1d0;color:#315d19}.research-status.degraded{background:#fff1cc;color:#765817}
.ai-markdown-draft{min-height:240px!important;font:12px/1.55 ui-monospace,SFMono-Regular,Menlo,monospace!important}.ai-evidence,.ai-assets{margin:14px 0;padding-top:12px;border-top:1px solid var(--line)}.ai-evidence h4,.ai-assets h4{margin:0 0 7px;font-size:12px}.ai-evidence ol{margin:0;padding-left:23px}.ai-evidence li{margin:6px 0}.ai-evidence a{display:flex;justify-content:space-between;gap:8px;color:inherit;text-decoration:none;font-size:11px}.ai-evidence a span,.ai-assets>p{color:var(--muted);font-size:10px}
.ai-assets>.ai-assets-head{display:flex;grid-template-columns:none;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:10px}.ai-assets-head h4,.ai-assets-head p{margin:0}.ai-assets-head p{margin-top:5px}.ai-assets>div:last-child{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.ai-remove-image{flex:0 0 auto}.ai-image-candidate{display:grid;grid-template-columns:72px 1fr;gap:8px;border:1px solid var(--line);border-radius:8px;padding:7px;min-width:0}.ai-image-candidate img{width:72px;height:58px;object-fit:cover;border-radius:5px}.ai-image-candidate b,.ai-image-candidate span,.ai-image-candidate a{display:block;overflow-wrap:anywhere;font-size:9px;line-height:1.4}.ai-image-candidate span{color:var(--muted);margin:3px 0}
.ai-model-meta{display:flex;flex-wrap:wrap;gap:7px;margin:12px 0}.ai-model-meta span{background:#efefeb;border-radius:5px;padding:5px 7px;font-size:9px}body[data-theme="night"] .ai-toggle,body[data-theme="night"] .ai-model-meta span{background:#252a23}body[data-theme="night"] .ai-error{background:#352422}
@media(max-width:760px){.ai-preferences{grid-template-columns:1fr}.ai-auto-image{grid-column:auto}.ai-assets>.ai-assets-head{display:block}.ai-remove-image{margin-top:9px}.ai-assets>div:last-child{grid-template-columns:1fr}.ai-result-head,.ai-evidence a{display:block}.research-status{display:inline-block;margin-top:8px}.ai-evidence a span{margin-top:2px}}
*{box-sizing:border-box}body{margin:0;min-height:100vh}button{font:inherit;color:inherit}button:focus-visible,.flashcard:focus-visible{outline:3px solid rgba(217,120,53,.35);outline-offset:3px}.app-shell{min-height:100vh;display:grid;grid-template-columns:84px 340px 1fr}.rail{background:var(--navy);color:#dfe5ef;padding:22px 14px;display:flex;flex-direction:column;align-items:center;position:relative;z-index:3}.brand{width:46px;height:46px;border:0;border-radius:15px;background:var(--amber);color:white;font-family:serif;font-size:23px;font-weight:800;box-shadow:0 8px 20px rgba(217,120,53,.25)}.rail nav{display:flex;flex-direction:column;gap:10px;margin-top:56px}.nav-item{width:56px;min-height:58px;border:0;border-radius:14px;background:transparent;color:#9da9ba;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;cursor:pointer}.nav-item span{font-size:22px}.nav-item small{font-size:11px}.nav-item:hover,.nav-item.active{background:#293751;color:white}.settings{margin-top:auto}.queue{background:#faf9f6;border-right:1px solid var(--line);padding:30px 24px 22px;overflow:auto;max-height:100vh}.queue-head{display:flex;align-items:center;justify-content:space-between}.eyebrow{margin:0 0 6px;font-size:10px;font-weight:800;letter-spacing:.16em;color:var(--amber)}h1{margin:0;font-size:28px;letter-spacing:-.04em}.icon-button{width:40px;height:40px;border:1px solid var(--line);background:transparent;border-radius:12px;cursor:pointer}.progress-summary{margin:25px 0 22px;display:flex;gap:14px;align-items:center}.progress-summary strong{font-size:14px}.progress-summary p{font-size:12px;color:var(--muted);margin:4px 0}.ring{--progress:0;width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--amber) calc(var(--progress)*1%),#e8e5df 0);position:relative}.ring:before{content:"";position:absolute;inset:5px;border-radius:50%;background:#faf9f6}.ring span{z-index:1;font-weight:800}.ring small{font-size:10px;color:var(--muted)}.topic-filter{display:flex;gap:7px;overflow:auto;padding-bottom:3px}.chip{border:1px solid var(--line);background:transparent;border-radius:999px;padding:7px 12px;font-size:12px;white-space:nowrap;cursor:pointer}.chip.active{background:var(--navy);border-color:var(--navy);color:white}.question-list{margin-top:16px}.question-item{width:100%;border:0;border-bottom:1px solid #e7e4de;background:transparent;text-align:left;padding:15px 8px;cursor:pointer;display:grid;grid-template-columns:26px 1fr auto;gap:9px;align-items:start}.question-item:hover{background:#f3f0ea}.question-item.active{background:#f0ebe1;border-radius:10px;border-bottom-color:transparent}.q-index{font-size:11px;color:#999}.q-copy b{display:block;font-size:13px;line-height:1.5}.q-copy small{display:block;margin-top:5px;color:var(--muted);font-size:11px}.q-status{width:7px;height:7px;border-radius:50%;background:#c9c9c5;margin-top:6px}.q-status.done{background:var(--sage)}.import-note{width:100%;border:1px dashed #c9c5bc;border-radius:12px;background:transparent;margin-top:18px;padding:13px;text-align:left;display:flex;gap:10px;align-items:center;cursor:pointer;color:var(--muted)}.import-note b,.import-note small{display:block;font-size:11px}.import-note b{color:var(--ink);margin-bottom:3px}.workspace{min-width:0;background:var(--canvas)}.topbar{height:76px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 34px}.breadcrumb{font-size:13px;color:var(--muted)}.breadcrumb i{font-style:normal;padding:0 8px}.top-actions{display:flex;gap:10px}.text-button{border:0;background:transparent;color:var(--muted);cursor:pointer;font-size:12px}.mobile-back{display:none}.study-stage{min-height:calc(100vh - 76px);padding:32px 6vw 24px;display:flex;flex-direction:column;align-items:center}.study-meta{width:min(720px,100%);display:flex;justify-content:space-between;color:var(--muted);font-size:12px;margin-bottom:13px}.status-pill{color:var(--sage);font-weight:700}.flashcard-wrap{width:min(720px,100%);height:min(53vh,540px);min-height:390px;perspective:1400px}.flashcard{height:100%;width:100%;position:relative;transform-style:preserve-3d;transition:transform .55s cubic-bezier(.2,.75,.25,1);cursor:pointer}.flashcard.flipped{transform:rotateY(180deg)}.card-face{position:absolute;inset:0;backface-visibility:hidden;border-radius:4px;background:var(--paper);box-shadow:var(--shadow);border:1px solid #e4ddcf;overflow:hidden}.card-face:after{content:"";position:absolute;left:0;right:0;top:18px;border-top:1px solid rgba(129,110,78,.08)}.card-front{padding:55px 72px;display:flex;flex-direction:column;align-items:flex-start}.card-back{transform:rotateY(180deg);padding:48px 62px}.card-kicker{text-transform:uppercase;font-size:11px;letter-spacing:.14em;color:var(--amber);font-weight:800;margin:0 0 22px}.card-front h2,.card-back h2{font-family:"Songti SC","STSong",serif;font-weight:700;letter-spacing:-.03em}.card-front h2{font-size:clamp(29px,3vw,46px);line-height:1.35;margin:0;max-width:600px}.question-hint{color:var(--muted);font-size:14px;margin-top:20px}.reveal-button{margin-top:auto;background:var(--navy);color:white;border:0;border-radius:10px;padding:13px 14px 13px 20px;display:flex;gap:18px;align-items:center;cursor:pointer;box-shadow:0 8px 20px rgba(23,35,59,.16)}kbd{font-family:inherit;font-size:10px;border:1px solid #d4d2cc;border-bottom-width:2px;border-radius:5px;padding:2px 5px;background:#fff;color:#6d7480}.reveal-button kbd{background:#344058;border-color:#4a566c;color:#dfe5ef}.answer-scroll{height:100%;overflow:auto}.card-back h2{font-size:26px;margin:0 0 20px}.answer-content{font-size:15px;line-height:1.8}.answer-content ol{padding-left:20px}.answer-content li{margin:9px 0}.answer-content strong{color:var(--navy)}.source-line{border-top:1px solid #ddd5c8;margin-top:25px;padding-top:16px;color:var(--muted);font-size:12px}.rating-panel{width:min(720px,100%);margin-top:20px;opacity:.38;pointer-events:none;transition:opacity .25s}.rating-panel.enabled{opacity:1;pointer-events:auto}.rating-panel>p{text-align:center;font-size:12px;color:var(--muted);margin:0 0 10px}.rating-actions{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.rating-actions button{border:1px solid var(--line);background:#faf9f6;border-radius:11px;padding:10px;display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto auto;text-align:left;column-gap:8px;cursor:pointer}.rating-actions button>span{grid-row:1/3;align-self:center;font-size:20px;color:var(--amber)}.rating-actions b{font-size:12px}.rating-actions small{font-size:10px;color:var(--muted)}.rating-actions .primary{background:var(--sage);border-color:var(--sage);color:white}.rating-actions .primary span,.rating-actions .primary small{color:white}.keyboard-help{font-size:11px;color:#8a8f97;margin:16px 0 0}.mobile-nav{display:none}.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,15px);padding:11px 16px;background:var(--navy);color:white;border-radius:9px;font-size:12px;opacity:0;pointer-events:none;transition:.25s;z-index:20}.toast.show{opacity:1;transform:translate(-50%,0)}dialog{border:0;border-radius:18px;padding:0;box-shadow:0 30px 80px rgba(23,35,59,.25);max-width:440px;width:calc(100% - 32px)}dialog::backdrop{background:rgba(16,24,39,.52);backdrop-filter:blur(3px)}dialog form{padding:34px;text-align:center;position:relative}.dialog-close{position:absolute;right:16px;top:14px;border:0;background:transparent;font-size:24px;cursor:pointer}.folder-icon{font-size:36px;color:var(--amber)}dialog h2{font-family:serif;font-size:25px;margin:5px 0 10px}dialog form>p:not(.eyebrow){color:var(--muted);font-size:13px;line-height:1.65}.drop-zone{margin-top:20px;height:120px;border:1px dashed #bbb4a7;background:var(--paper);border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;color:var(--amber)}.drop-zone b{font-size:13px;color:var(--ink)}.drop-zone small{color:var(--muted);font-size:11px}.drop-zone input{display:none}.privacy-note{margin-top:16px;color:var(--sage);font-size:11px}
@media(max-width:1050px){.app-shell{grid-template-columns:76px 300px 1fr}.queue{padding-left:18px;padding-right:18px}.card-front{padding:48px}.card-back{padding:40px}.study-stage{padding-left:4vw;padding-right:4vw}.top-actions{gap:5px;overflow:auto}.top-actions .text-button{display:inline-flex;flex:0 0 auto;padding:7px 5px;font-size:10px;white-space:nowrap}}
@media(max-width:820px){.app-shell{grid-template-columns:76px 1fr}.queue{display:none}.workspace{display:block}.study-stage{padding:28px 7vw}.flashcard-wrap{height:58vh}.topbar{padding:0 24px}.card-front{padding:50px}.mobile-back{display:block;border:0;background:transparent;font-size:30px}.breadcrumb{margin-right:auto}.rail{display:flex}}
@media(max-width:600px){body{background:#f6f4ee;padding-bottom:68px}.app-shell{display:block;min-height:calc(100vh - 68px)}.rail{display:none}.workspace{background:#f6f4ee}.topbar{height:58px;padding:0 16px}.top-actions{display:flex;margin-left:auto}.top-actions #sourceBtn,.top-actions #moreBtn{display:none}.top-actions #authBtn,.top-actions #editFromReviewBtn{display:inline-flex}.study-stage{min-height:calc(100vh - 126px);padding:18px 16px 90px;justify-content:flex-start}.study-meta{margin-bottom:10px}.flashcard-wrap{height:50vh;min-height:340px}.card-face{border-radius:3px}.card-front{padding:36px 28px}.card-back{padding:30px 26px}.card-front h2{font-size:30px}.question-hint{font-size:13px}.reveal-button{width:100%;justify-content:space-between}.rating-panel{margin-top:14px}.rating-actions{gap:6px}.rating-actions button{display:flex;flex-direction:column;align-items:center;text-align:center;gap:3px;padding:9px 4px}.rating-actions button>span{font-size:16px}.keyboard-help{display:none}.mobile-nav{display:grid;grid-template-columns:repeat(4,1fr);height:68px;position:fixed;left:0;right:0;bottom:0;background:rgba(255,255,255,.94);border-top:1px solid var(--line);backdrop-filter:blur(16px);z-index:10}.mobile-nav button{border:0;background:transparent;color:var(--muted);font-size:10px;display:flex;flex-direction:column;gap:2px;align-items:center;justify-content:center}.mobile-nav span{font-size:19px}.mobile-nav .active{color:var(--amber)}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* Aurora UI — modern product theme */
:root{--navy:#2436d8;--navy-2:#3547e8;--amber:#715cff;--paper:#fff;--canvas:#f6f7fc;--ink:#171c36;--muted:#737a96;--line:#e5e7f1;--sage:#16a36f;--cyan:#25b6cf;--shadow:0 26px 80px rgba(64,70,130,.14)}
.rail{background:linear-gradient(180deg,#202fc7 0%,#4939d2 100%)}.brand{background:#fff;color:#3341d7;font-family:inherit;box-shadow:0 10px 28px rgba(8,15,93,.24)}.nav-item{color:#c8ccff}.nav-item:hover,.nav-item.active{background:rgba(255,255,255,.16);color:#fff}.queue{background:#fff}.ring{background:conic-gradient(#715cff calc(var(--progress)*1%),#ebeafd 0)}.ring:before{background:#fff}.chip.active{background:#252fbe;border-color:#252fbe}.question-item.active{background:#f0efff}.q-status.done{background:#17a673}.import-note{border-color:#cbc8ef;background:#faf9ff}.workspace{background:radial-gradient(circle at 70% 5%,#eef0ff 0,transparent 36%),var(--canvas)}.status-pill,.progress-summary .eyebrow{color:#6150e7}.flashcard-wrap{perspective:1400px}.card-face{border-radius:22px;border:1px solid #e3e5f5;background:#fff;box-shadow:0 28px 80px rgba(57,63,129,.13)}.card-face:after{display:none}.card-front h2,.card-back h2{font-family:inherit;letter-spacing:-.045em}.card-kicker{color:#6253e7}.reveal-button{background:linear-gradient(135deg,#2738d8,#6b50e4);border-radius:13px;box-shadow:0 12px 30px rgba(60,57,210,.25)}.rating-actions button{background:#fff;border-radius:14px}.rating-actions .primary{background:#1a9b70;border-color:#1a9b70}.topbar{background:rgba(255,255,255,.58);backdrop-filter:blur(14px)}
.workspace-page{grid-column:3;background:var(--canvas);min-height:100vh;padding:38px 46px 60px;overflow:auto}.workspace-page[hidden]{display:none}.page-header{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:28px}.page-header h1{font-size:32px}.page-header>div>p:last-child{color:var(--muted);font-size:13px;margin:8px 0 0}.primary-action{border:0;background:linear-gradient(135deg,#2639d8,#715cff);color:#fff;border-radius:12px;padding:12px 18px;font-weight:700;cursor:pointer;box-shadow:0 10px 24px rgba(60,58,211,.2)}.ghost-action{border:1px solid var(--line);background:#fff;border-radius:10px;padding:9px 13px;cursor:pointer}.library-toolbar{display:flex;gap:16px;justify-content:space-between;margin-bottom:22px}.search-box{height:42px;min-width:320px;display:flex;align-items:center;gap:8px;padding:0 13px;background:#fff;border:1px solid var(--line);border-radius:12px;color:var(--muted)}.search-box input{border:0;outline:0;width:100%;font:inherit;font-size:13px}.segmented{display:flex;background:#eaeaf3;padding:4px;border-radius:11px}.segmented button{border:0;background:transparent;border-radius:8px;padding:7px 12px;color:var(--muted);cursor:pointer;font-size:12px}.segmented .active{background:#fff;color:var(--ink);box-shadow:0 2px 8px rgba(40,42,80,.1)}.library-layout{display:grid;grid-template-columns:230px 1fr;gap:18px}.spaces-panel,.library-content,.chart-card,.weak-card,.mastery-section,.settings-group{background:#fff;border:1px solid var(--line);border-radius:18px}.spaces-panel{padding:18px}.spaces-panel h3{font-size:12px;color:var(--muted);margin:0 8px 12px}.space-row{width:100%;border:0;background:transparent;border-radius:12px;padding:10px;display:grid;grid-template-columns:35px 1fr auto;text-align:left;align-items:center;gap:9px;cursor:pointer}.space-row.active{background:#f0efff}.space-row b,.space-row small{display:block}.space-row b{font-size:12px}.space-row small{font-size:10px;color:var(--muted);margin-top:3px}.space-row i{font-style:normal}.space-icon{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:#dff6f4;color:#128171;font-weight:800}.space-icon.violet{background:#ece9ff;color:#624ee1}.new-space{width:100%;margin-top:12px;border:1px dashed #cbcce0;background:transparent;border-radius:10px;padding:10px;font-size:11px;color:var(--muted);cursor:pointer}.library-content{padding:22px}.section-head{display:flex;justify-content:space-between;align-items:center}.section-head h2{font-size:17px;margin:0}.section-head p{font-size:11px;color:var(--muted);margin:5px 0 0}.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:21px 0}.topic-card{border:1px solid var(--line);border-radius:13px;padding:13px}.topic-card span{font-size:10px;color:var(--muted)}.topic-card b{display:block;margin:8px 0}.mini-progress{height:4px;background:#eeeef6;border-radius:5px;overflow:hidden}.mini-progress i{display:block;height:100%;background:linear-gradient(90deg,#29b6d1,#715cff);border-radius:5px}.table-head,.card-row{display:grid;grid-template-columns:minmax(230px,1.5fr) 100px 100px 100px;align-items:center;gap:10px}.table-head{padding:10px 12px;font-size:10px;color:var(--muted);border-bottom:1px solid var(--line)}.card-row{padding:13px 12px;border-bottom:1px solid #f0f1f6;font-size:11px}.card-row:last-child{border:0}.card-row b{font-size:12px}.state-badge{width:max-content;padding:5px 8px;border-radius:999px;background:#eef9f5;color:#16825e}.state-badge.todo{background:#fff3e9;color:#bf6b27}.date-switch{display:flex;align-items:center;background:#fff;border:1px solid var(--line);border-radius:11px;padding:4px}.date-switch button{border:0;background:transparent;padding:6px 10px}.date-switch span{font-size:12px}.metric-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:14px}.metric-grid article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}.metric-grid article>p,.hero-metric p{font-size:11px;color:var(--muted);margin:0}.metric-grid article>strong{display:block;font-size:35px;margin-top:18px}.metric-grid article>small{color:var(--muted)}.hero-metric{display:flex;justify-content:space-between;align-items:center;background:linear-gradient(135deg,#252fc0,#7457e7)!important;color:#fff}.hero-metric p,.hero-metric .trend{color:#e0e2ff}.hero-metric strong{display:block;font-size:44px;margin:6px 0}.hero-metric strong small{font-size:18px}.hero-metric .trend{font-size:10px}.donut{width:78px;height:78px;border-radius:50%;background:conic-gradient(#55d9d0 64%,rgba(255,255,255,.18) 0);display:grid;place-items:center;position:relative}.donut:before{content:"";position:absolute;inset:8px;border-radius:50%;background:#3d3dcc}.donut span{z-index:1;font-weight:800}.donut small{display:block;font-size:8px;text-align:center;color:#dfe1ff}.stats-layout{display:grid;grid-template-columns:2fr 1fr;gap:14px;margin-top:14px}.chart-card,.weak-card,.mastery-section{padding:22px}.bar-chart{height:190px;display:flex;align-items:end;gap:16px;padding:25px 8px 0}.bar-item{flex:1;text-align:center;font-size:9px;color:var(--muted)}.bar-item i{display:block;background:linear-gradient(180deg,#715cff,#2cb6d0);border-radius:7px 7px 2px 2px;margin-bottom:8px;min-height:10px}.legend{font-size:10px;color:var(--muted)}.legend i{display:inline-block;width:7px;height:7px;background:#715cff;border-radius:2px;margin-right:5px}.weak-row,.mastery-row{padding:13px 0;border-bottom:1px solid #eff0f5}.weak-row{display:flex;justify-content:space-between}.weak-row b,.mastery-row b{font-size:12px}.weak-row span{font-size:10px;color:#e27339}.wide{width:100%;margin-top:15px}.mastery-section{margin-top:14px}.mastery-row{display:grid;grid-template-columns:120px 1fr 45px;align-items:center;gap:15px}.mastery-row .mini-progress{height:7px}.mastery-row em{font-size:11px;font-style:normal;text-align:right}.settings-layout{display:grid;grid-template-columns:180px minmax(0,760px);gap:30px}.settings-menu{display:flex;flex-direction:column;gap:4px}.settings-menu button{border:0;background:transparent;text-align:left;padding:10px 13px;border-radius:9px;color:var(--muted);cursor:pointer}.settings-menu .active{background:#eaeaff;color:#3341cf;font-weight:700}.settings-content{display:flex;flex-direction:column;gap:14px}.settings-group{padding:22px}.group-title h2,.danger-lite h2{font-size:16px;margin:0}.group-title p,.danger-lite p{font-size:11px;color:var(--muted);margin:5px 0 16px}.theme-picker{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.theme-choice{border:1px solid var(--line);background:#fff;border-radius:12px;padding:8px;text-align:left;cursor:pointer}.theme-choice.active{border:2px solid #6253e7}.theme-choice b,.theme-choice small{display:block;margin:7px 2px 0;font-size:11px}.theme-choice small{color:var(--muted);font-size:9px}.theme-preview{height:65px;border-radius:8px;display:block}.theme-preview.aurora{background:linear-gradient(135deg,#2939d4 0 24%,#f2f4ff 24% 100%)}.theme-preview.midnight{background:linear-gradient(135deg,#11152d 0 28%,#272a43 28%)}.theme-preview.system{background:linear-gradient(135deg,#fff 0 50%,#181c33 50%)}.setting-row{display:flex;justify-content:space-between;align-items:center;padding:15px 0;border-bottom:1px solid #eff0f5}.setting-row:last-child{border:0}.setting-row h3{font-size:13px;margin:0}.setting-row p{font-size:10px;color:var(--muted);margin:5px 0 0}.setting-row select{border:1px solid var(--line);border-radius:9px;padding:8px;background:#fff}.switch{width:42px;height:24px;border:0;border-radius:20px;background:#d5d7e3;padding:3px;cursor:pointer}.switch i{display:block;width:18px;height:18px;background:#fff;border-radius:50%;transition:.2s}.switch.on{background:#6253e7}.switch.on i{transform:translateX(18px)}.radio-row{display:flex;align-items:center;gap:12px;padding:13px 0;border-bottom:1px solid #eff0f5}.radio-row span{flex:1}.radio-row b,.radio-row small{display:block;font-size:12px}.radio-row small{color:var(--muted);font-size:10px;margin-top:4px}.radio-row em{font-size:9px;font-style:normal;background:#ebe9ff;color:#5a46d6;padding:4px 7px;border-radius:10px}.danger-lite{display:flex;align-items:center;justify-content:space-between}
@media(max-width:1050px){.workspace-page{grid-column:2;padding:30px 28px}.library-layout{grid-template-columns:210px minmax(0,1fr)}.topic-grid{grid-template-columns:repeat(2,1fr)}.metric-grid{grid-template-columns:repeat(3,1fr)}.hero-metric{grid-column:1/4}.settings-layout{grid-template-columns:140px 1fr}}
@media(max-width:600px){.workspace-page{grid-column:auto;padding:22px 16px 90px;min-height:calc(100vh - 68px)}.page-header{align-items:flex-start}.page-header h1{font-size:27px}.page-header .primary-action{font-size:0;padding:12px}.page-header .primary-action:first-letter{font-size:18px}.library-toolbar{display:block}.search-box{min-width:0;width:100%}.segmented{margin-top:10px;overflow:auto}.library-content{padding:16px}.topic-grid{grid-template-columns:repeat(2,1fr)}.table-head{display:none}.card-row{grid-template-columns:1fr auto}.card-row span:nth-child(2),.card-row span:nth-child(4){display:none}.metric-grid{grid-template-columns:repeat(3,1fr);gap:7px}.hero-metric{grid-column:1/4}.metric-grid article{padding:14px}.metric-grid article>strong{font-size:25px}.stats-layout{grid-template-columns:1fr}.settings-layout{display:block}.settings-menu{display:flex;flex-direction:row;overflow:auto;margin-bottom:14px}.settings-menu button{white-space:nowrap}.theme-picker{grid-template-columns:1fr 1fr}.theme-choice:last-child{display:none}.setting-row{gap:12px}.radio-row em{display:none}.date-switch{display:none}}
body[data-view]:not([data-view="review"]) .app-shell{grid-template-columns:84px 1fr}body[data-view]:not([data-view="review"]) .queue,body[data-view]:not([data-view="review"]) #workspace{display:none}body[data-view]:not([data-view="review"]) .workspace-page{grid-column:2}@media(max-width:1050px){body[data-view]:not([data-view="review"]) .app-shell{grid-template-columns:76px 1fr}}@media(max-width:600px){body[data-view]:not([data-view="review"]) .app-shell{display:block}body[data-view]:not([data-view="review"]) .workspace-page{grid-column:auto}}
.card-row{border:0;border-bottom:1px solid #f0f1f6;background:transparent;text-align:left;cursor:pointer}

/* Forest & Clay theme — warm, calm, blue-free */
:root{--navy:#214e42;--navy-2:#2f6655;--amber:#c66b4e;--paper:#fffcf7;--canvas:#f5f2eb;--ink:#25312d;--muted:#737c77;--line:#e3e0d7;--sage:#3e7c65;--cyan:#79a68e;--violet:#c66b4e;--shadow:0 24px 70px rgba(49,68,59,.12)}
body{background:var(--canvas)}
.rail{background:linear-gradient(180deg,#183f36 0%,#2d6654 100%)}
.brand{color:#285647;background:#fffaf2;box-shadow:0 10px 28px rgba(10,46,37,.25)}
.nav-item{color:#c8ded5}.nav-item:hover,.nav-item.active{background:rgba(255,255,255,.15);color:#fff}
.workspace{background:radial-gradient(circle at 72% 5%,#e4eee7 0,transparent 38%),var(--canvas)}
.topbar{background:rgba(255,252,247,.72)}.queue{background:#fffdf9}
.ring{background:conic-gradient(#c66b4e calc(var(--progress)*1%),#ede7dc 0)}.ring:before{background:#fffdf9}
.chip.active{background:#214e42;border-color:#214e42}.question-item.active{background:#edf2ec}.q-status.done{background:#3e7c65}
.import-note{border-color:#cbd8d0;background:#f8fbf7}.status-pill,.progress-summary .eyebrow,.card-kicker{color:#3e7c65}
.card-face{border-color:#e5dfd3;background:#fffcf7;box-shadow:0 28px 80px rgba(52,70,61,.12)}
.reveal-button,.primary-action{background:linear-gradient(135deg,#214e42,#438069);box-shadow:0 12px 28px rgba(33,78,66,.22)}
.rating-actions .primary{background:#3e7c65;border-color:#3e7c65}.rating-actions button>span{color:#c66b4e}
.segmented{background:#ebe9e2}.segmented .active{background:#fffdf9}.space-row.active,.settings-menu .active{background:#edf2ec;color:#285c4c}
.space-icon{background:#e3f0e8;color:#2f735b}.space-icon.violet{background:#f4e7df;color:#a6533c}
.mini-progress i{background:linear-gradient(90deg,#79a68e,#3e7c65)}.state-badge{background:#eaf4ee;color:#2f735b}.state-badge.todo{background:#f8eae3;color:#aa573e}
.hero-metric{background:linear-gradient(135deg,#214e42,#467d66)!important}.hero-metric p,.hero-metric .trend{color:#dcebe4}.donut{background:conic-gradient(#e6ad84 64%,rgba(255,255,255,.18) 0)}.donut:before{background:#315f50}
.bar-item i{background:linear-gradient(180deg,#c66b4e,#6e9b80)}.legend i{background:#c66b4e}.weak-row span{color:#b55f43}
.theme-choice.active{border-color:#3e7c65}.theme-preview.aurora{background:linear-gradient(135deg,#214e42 0 24%,#f5f2eb 24% 100%)}.theme-preview.midnight{background:linear-gradient(135deg,#102e27 0 28%,#253c34 28%)}.theme-preview.system{background:linear-gradient(135deg,#fffcf7 0 50%,#1e3b32 50%)}
.switch.on{background:#3e7c65}.radio-row em{background:#edf2ec;color:#2f735b}

/* Mono Signal theme — black, white, signal lime */
:root{--navy:#111;--navy-2:#202020;--amber:#b8f34a;--paper:#fff;--canvas:#f3f3f0;--ink:#111;--muted:#6f716b;--line:#dedfd9;--sage:#7faf29;--cyan:#b8f34a;--violet:#b8f34a;--shadow:0 24px 70px rgba(0,0,0,.10)}
body{background:#f3f3f0;color:#111}.rail{background:#111}.brand{background:#b8f34a;color:#111;box-shadow:none}.nav-item{color:#aaa}.nav-item:hover,.nav-item.active{background:#272727;color:#fff}.nav-item.active span{color:#b8f34a}
.workspace{background:radial-gradient(circle at 72% 4%,#edf9d4 0,transparent 35%),#f3f3f0}.topbar{background:rgba(255,255,255,.75);border-color:#ddd}.queue{background:#fff}.eyebrow,.card-kicker,.status-pill{color:#567d13!important}.ring{background:conic-gradient(#111 calc(var(--progress)*1%),#e5e5e0 0)}.ring:before{background:#fff}.chip.active{background:#111;border-color:#111}.question-item.active{background:#eef7df}.q-status.done{background:#7faf29}
.flashcard-wrap .card-face{background:#fff;border-color:#dedfd9;box-shadow:0 26px 65px rgba(0,0,0,.09)}.reveal-button,.primary-action{background:#111;color:#fff;box-shadow:none}.reveal-button:hover,.primary-action:hover{background:#242424}.rating-actions .primary{background:#111;border-color:#111}.rating-actions .primary span{color:#b8f34a}.rating-actions button>span{color:#111}
.previous-card{border:0;background:transparent;font-size:12px;font-weight:700;cursor:pointer;padding:0}.study-meta{align-items:center}.study-meta .status-pill{margin-left:auto}.review-hard-only{width:100%;display:grid;grid-template-columns:30px 1fr auto;gap:8px;align-items:center;text-align:left;border:1px solid #dce7c7;background:#f4fae9;border-radius:12px;padding:11px 12px;margin:14px 0 4px;cursor:pointer}.review-hard-only>span:first-child{font-size:20px}.review-hard-only b,.review-hard-only small{display:block}.review-hard-only b{font-size:12px}.review-hard-only small{font-size:10px;color:var(--muted);margin-top:3px}.review-hard-only i{font-style:normal}
.workspace-page{background:#f3f3f0}.segmented{background:#e7e7e3}.segmented .active{background:#fff}.space-row.active,.settings-menu .active{background:#eef7df;color:#111}.space-icon,.space-icon.violet{background:#eaf7d4;color:#3d5d0d}.mini-progress i{background:#111}.state-badge{background:#edf7dd;color:#4d7211}.state-badge.todo{background:#f1f1ec;color:#555}.hero-metric{background:#111!important}.hero-metric p,.hero-metric .trend{color:#ccc}.donut{background:conic-gradient(#b8f34a 64%,#333 0)}.donut:before{background:#111}.bar-item i{background:#111}.legend i{background:#b8f34a}.weak-row span{color:#567d13}.switch.on{background:#111}.radio-row em{background:#eaf7d4;color:#4d7211}.theme-choice.active{border-color:#111}.theme-preview.aurora{background:linear-gradient(135deg,#111 0 24%,#f3f3f0 24% 76%,#b8f34a 76%)}.theme-preview.midnight{background:linear-gradient(135deg,#050505 0 70%,#b8f34a 70%)}
.vip-badge{display:inline-block;vertical-align:middle;background:#b8f34a;color:#111;border-radius:6px;padding:4px 7px;font:800 9px/1 Inter,sans-serif;letter-spacing:.08em}.quota-pill{background:#fff;border:1px solid #d9d9d4;border-radius:12px;padding:9px 13px;text-align:right}.quota-pill span,.quota-pill b{display:block;font-size:10px}.quota-pill b{font-size:13px;margin-top:3px}.ai-layout{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(260px,.7fr);gap:16px}.ai-coach,.quota-card,.vip-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px}.ai-question span{font-size:10px;color:var(--muted);text-transform:uppercase}.ai-question h2{font-size:27px;margin:12px 0 30px}.ai-message{display:flex;gap:12px;background:#f2f8e6;border:1px solid #d9e8bd;border-radius:14px;padding:16px}.ai-message>i{font-style:normal;width:30px;height:30px;display:grid;place-items:center;background:#111;color:#b8f34a;border-radius:8px}.ai-message b{font-size:11px}.ai-message p{font-size:14px;line-height:1.7;margin:7px 0 0}.answer-box{margin-top:14px;border:1px solid var(--line);border-radius:14px;overflow:hidden}.answer-box textarea{border:0;outline:0;resize:vertical;width:100%;min-height:180px;padding:16px;font:14px/1.7 inherit}.answer-box>div{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-top:1px solid var(--line)}.answer-box small{color:var(--muted)}.ai-sidebar{display:flex;flex-direction:column;gap:14px}.quota-card p{font-size:10px;color:var(--muted);margin:0}.quota-card h3,.vip-card h3{font-size:17px;margin:8px 0}.quota-card ul,.vip-card ul{padding-left:17px;font-size:11px;line-height:2;color:var(--muted)}.vip-card{background:#111;color:#fff;border-color:#111;position:relative}.vip-card>span{color:#b8f34a;font-size:8px;letter-spacing:.13em}.vip-card strong{font-size:30px}.vip-card strong small{font-size:11px;color:#aaa}.vip-card button{width:100%;border:0;background:#b8f34a;color:#111;border-radius:10px;padding:11px;font-weight:800;cursor:pointer}.cloud-status{display:grid;grid-template-columns:38px 1fr auto;align-items:center;gap:12px;background:#f5f5f1;border:1px solid var(--line);border-radius:13px;padding:14px;margin-bottom:10px}.cloud-status>i{font-style:normal;font-size:25px}.cloud-status b,.cloud-status p{font-size:11px;margin:0}.cloud-status p{color:var(--muted);margin-top:4px}.cloud-status button{border:0;background:#111;color:#fff;border-radius:8px;padding:8px 10px;cursor:pointer}.locked{font-size:9px;background:#eaf7d4;padding:5px 8px;border-radius:999px}.danger-action{border:1px solid #d5d5d0;background:#fff;border-radius:8px;padding:8px 11px;cursor:pointer}.folder-icon{font-size:16px;font-weight:900;background:#111;color:#b8f34a;width:52px;height:42px;display:grid;place-items:center;border-radius:8px;margin:0 auto 10px}
@media(max-width:900px){.ai-layout{grid-template-columns:1fr}.ai-sidebar{display:grid;grid-template-columns:1fr 1fr}}@media(max-width:600px){.ai-sidebar{display:block}.ai-sidebar article{margin-top:12px}.study-meta{gap:8px}.study-meta .status-pill{display:none}.previous-card{font-size:11px}.review-hard-only{margin-top:10px}.ai-coach{padding:16px}.ai-question h2{font-size:22px}.answer-box>div{align-items:flex-end;gap:8px}}
.brand{padding:0!important;overflow:hidden;background:#111!important;border-radius:13px!important;box-shadow:none!important}.brand img{display:block;width:100%;height:100%;object-fit:cover}

/* Desktop app viewport: shell stays fixed, content regions own their scrolling. */
@media(min-width:601px){html,body{height:100%;overflow:hidden}.app-shell{height:100vh;min-height:0;overflow:hidden}.rail,.queue,.workspace,.workspace-page{height:100vh;min-height:0}.workspace{overflow:hidden}.workspace-page{min-height:0;overflow:hidden;display:flex;flex-direction:column}.workspace-page[hidden]{display:none}.page-header,.library-toolbar{flex:0 0 auto}.library-layout,.settings-layout,.ai-layout{min-height:0;flex:1}.library-layout{overflow:hidden}.spaces-panel{overflow:auto}.library-content{min-height:0;display:flex;flex-direction:column}.topic-grid,.table-head,.section-head{flex:0 0 auto}.card-table{min-height:0;overflow:auto;overscroll-behavior:contain}.settings-menu{overflow:auto}.settings-content{min-height:0;overflow:auto;padding-right:6px;overscroll-behavior:contain}.ai-layout{overflow:auto;overscroll-behavior:contain}.stats-layout{min-height:0}.mastery-section{min-height:0;overflow:auto}.answer-scroll{overscroll-behavior:contain}}
#statsPage{overflow:auto}.stats-layout{flex:0 0 auto}#statsPage .mastery-section{flex:0 0 auto;min-height:190px}.topic-card[data-topic-id]{user-select:none}.topic-card[data-topic-id]:after{content:"双击查看详情";display:block;font-size:9px;color:var(--muted);margin-top:10px}.md-table-wrap{overflow:auto;margin:14px 0;border:1px solid var(--line);border-radius:10px}.md-table-wrap table{border-collapse:collapse;width:100%;font-size:12px}.md-table-wrap th,.md-table-wrap td{padding:9px 11px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}.md-table-wrap th{background:#f3f4ef;font-weight:800}.answer-content code{padding:2px 5px;border-radius:4px;background:#eef0e8;font:12px ui-monospace,monospace}.answer-content a{color:#3d6d10}
.validation-result{margin-top:12px;padding:11px 13px;border-radius:10px;text-align:left;max-height:280px;overflow:auto}.validation-result b,.validation-result span{display:block;font-size:11px}.validation-result span{margin-top:5px;line-height:1.5;color:var(--muted)}.validation-result.checking{background:#f2f2ee}.validation-result.success{background:#eef8df;border:1px solid #d4e8b1}.validation-result.error{background:#fff0ed;border:1px solid #efc8c0}.validation-result.error b{color:#a74232}
@media(max-width:600px){html,body{height:auto;overflow:auto}.workspace-page{height:auto;overflow:visible}}

/* Personal center */
.rail-bottom{margin-top:auto;display:flex;flex-direction:column;gap:8px}
@media(max-width:600px){.mobile-nav{grid-template-columns:repeat(5,1fr)}}
.profile-page{gap:0}
.profile-guest{margin:auto;max-width:540px;padding:54px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:0 22px 65px rgba(40,60,48,.09)}
.profile-guest[hidden],.profile-dashboard[hidden]{display:none}
.profile-guest-icon{width:68px;height:68px;margin:0 auto 20px;display:grid;place-items:center;border-radius:22px;background:#edf5e9;color:#285c49;font-size:28px}
.profile-guest h2{margin:0;font-size:24px}.profile-guest p{margin:12px auto 24px;max-width:420px;color:var(--muted);font-size:13px;line-height:1.8}
.profile-dashboard{min-height:0;overflow:auto;padding:2px 6px 30px 0;overscroll-behavior:contain}
.profile-account-card,.profile-panel{background:#fff;border:1px solid var(--line);border-radius:20px}
.profile-account-card{padding:26px 28px;margin-bottom:16px}
.profile-hero{display:flex;align-items:center;gap:15px;padding:0 0 24px}.profile-avatar{width:58px;height:58px;display:grid;place-items:center;border-radius:18px;background:linear-gradient(135deg,#214e42,#54836f);color:#fff;font-size:22px;font-weight:800;box-shadow:0 10px 25px rgba(51,78,18,.18)}
.profile-hero .eyebrow{margin:0 0 4px}.profile-hero h2{margin:0;font-size:23px}.profile-hero div>p:last-child{margin:4px 0 0;color:var(--muted);font-size:12px}.profile-state{margin-left:auto;padding:7px 11px;border-radius:999px;background:#edf7dd;color:#4d7211;font-size:11px;font-weight:700}
.profile-metrics{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:12px}.profile-metrics article{padding:17px;border:1px solid #e3e7df;border-radius:14px;background:#fafbf8}.profile-metrics span,.profile-metrics b,.profile-metrics small{display:block}.profile-metrics span{color:var(--muted);font-size:10px}.profile-metrics b{margin-top:7px;font-size:18px}.profile-metrics b em{font-size:28px;font-style:normal}.profile-metrics small{margin-top:5px;color:var(--muted);font-size:9px}.credit-metric{background:linear-gradient(135deg,#eff7e5,#f9fbf4)!important}
.profile-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.profile-panel{padding:23px}.profile-panel-title{display:flex;align-items:start;justify-content:space-between;margin-bottom:20px}.profile-panel-title .eyebrow{margin-bottom:5px}.profile-panel-title h2{margin:0;font-size:17px}.profile-panel-title>span{padding:5px 8px;border-radius:8px;background:#f1f2ed;color:var(--muted);font-size:9px}.profile-panel form{padding:0;text-align:left}.profile-panel .field{margin:0 0 13px}.profile-panel form>.primary-action{width:100%;margin-top:3px}
.credit-packages{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.credit-packages button{position:relative;min-height:82px;border:1px solid var(--line);border-radius:13px;background:#fafbf8;text-align:left;padding:14px 11px;cursor:pointer}.credit-packages button:hover,.credit-packages button.selected{border-color:#3e7c65;box-shadow:0 0 0 2px rgba(62,124,101,.13)}.credit-packages b,.credit-packages span{display:block}.credit-packages b{font-size:14px}.credit-packages span{margin-top:6px;color:var(--muted);font-size:9px}.credit-packages i{position:absolute;right:7px;top:7px;padding:3px 5px;border-radius:5px;background:#214e42;color:#fff;font-size:8px;font-style:normal}.profile-note,.profile-panel-copy{color:var(--muted);font-size:10px;line-height:1.7}.profile-note{text-align:center;margin:9px 0 0}
.test-payment-badge{background:#fff0cf!important;color:#855800!important}.test-payment-warning{display:grid;gap:4px;margin:-6px 0 14px;padding:11px 12px;border:1px solid #eed6a5;border-radius:11px;background:#fff9eb;color:#694b0d}.test-payment-warning b{font-size:10px}.test-payment-warning span{font-size:9px;line-height:1.5}.credit-packages button small{display:block;margin-top:5px;color:#855800;font-size:9px;font-weight:700}.test-order-status{display:grid;gap:5px;margin:11px 0;padding:12px;border:1px solid var(--line);border-radius:11px;background:#f7f8f4;font-size:10px;line-height:1.5;word-break:break-all}.test-order-status b{font-size:11px}.test-order-status[data-state="FULFILLED"]{border-color:#b9d9a3;background:#f2faec}.test-order-status[data-state="UNKNOWN"]{border-color:#eed6a5;background:#fff9eb}.profile-panel>.ghost-action.wide{width:100%;margin-top:9px}body[data-theme="night"] .test-payment-warning{background:#332d20;color:#f3d99c;border-color:#665737}body[data-theme="night"] .test-order-status{background:#292929;border-color:#444}
.profile-action-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0;border-top:1px solid #eff1eb}.profile-action-row:first-of-type{border-top:0}.profile-action-row b{font-size:12px}.profile-action-row p{margin:4px 0 0;color:var(--muted);font-size:10px}.danger-lite-button{border:1px solid #e5c9c6;border-radius:11px;padding:9px 15px;background:#fff7f6;color:#aa453f;cursor:pointer;white-space:nowrap}
body[data-theme="night"] .profile-account-card,body[data-theme="night"] .profile-panel,body[data-theme="night"] .profile-guest{background:#202020;color:#f6f6f1}body[data-theme="night"] .profile-metrics article,body[data-theme="night"] .credit-packages button{background:#292929!important;color:#fff;border-color:#444}
@media(max-width:900px){.profile-grid{grid-template-columns:1fr}.profile-metrics{grid-template-columns:1fr 1fr}.profile-metrics article:first-child{grid-column:1/3}}
@media(max-width:600px){.profile-page .page-header{margin-bottom:18px}.profile-dashboard{overflow:visible;padding:0}.profile-account-card{padding:20px}.profile-metrics{grid-template-columns:1fr}.profile-metrics article:first-child{grid-column:auto}.profile-grid{gap:12px}.profile-panel{padding:19px}.profile-state{display:none}.credit-packages{grid-template-columns:1fr}.credit-packages button{min-height:66px}.profile-guest{padding:36px 22px;margin-top:30px}}
.password-field{position:relative}.password-field input{width:100%;padding-right:58px!important}.password-toggle{position:absolute;right:8px;top:50%;transform:translateY(-50%);border:0;background:transparent;color:var(--sage);padding:6px;font-size:11px;font-weight:700;cursor:pointer}.password-toggle:hover{text-decoration:underline}.compact-action{padding:9px 13px;border-radius:10px}
.note-image{margin:18px 0;text-align:center}.note-image img{display:block;max-width:100%;max-height:360px;margin:auto;border-radius:12px;border:1px solid var(--line);object-fit:contain}.note-image figcaption{margin-top:7px;font-size:10px;color:var(--muted)}.missing-image{padding:10px;border:1px dashed #d98b7d;background:#fff3f0;color:#9d3f31;border-radius:8px}
.validation-file{margin-top:9px;padding-top:9px;border-top:1px solid rgba(0,0,0,.08)}.validation-file>b{font-size:11px;word-break:break-all}.validation-file .issue{display:block;margin-top:4px;font-size:10px;line-height:1.45;word-break:break-word}.error-item{color:#9d3f31!important}.warning-item{color:#75620f!important}
dialog>.toast{z-index:2147483647;bottom:20px;background:#111;box-shadow:0 10px 35px rgba(0,0,0,.28)}
.detail-page,.editor-page{overflow:auto;padding-bottom:34px}.back-link{border:0;background:transparent;padding:0 0 12px;color:var(--muted);font-size:13px;cursor:pointer}.detail-panel{margin:0 34px;background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:var(--shadow)}.question-detail{font-size:15px;line-height:1.8}.question-detail h1,.question-detail h2,.question-detail h3{margin-top:1.2em}.question-detail blockquote{margin:16px 0;padding:10px 14px;border-left:3px solid var(--amber);background:#f6f4ee;color:var(--muted)}.detail-footer{margin-top:30px;padding-top:16px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:12px;color:var(--muted);font-size:12px}.danger-action{border:1px solid #d77d78;background:#fff7f6;color:#b4403a;border-radius:9px;padding:9px 12px;cursor:pointer}.editor-layout{margin:0 34px;display:grid;grid-template-columns:minmax(360px,1fr) minmax(320px,.9fr);gap:18px;align-items:start}.editor-form,.markdown-preview{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:var(--shadow)}.editor-form .field{display:block;margin-bottom:18px}.editor-form .field>span{display:block;font-size:12px;font-weight:700;margin-bottom:7px}.editor-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}.markdown-editor{width:100%;min-height:430px;resize:vertical;border:1px solid var(--line);border-radius:10px;padding:13px;background:#fbfbf8;color:var(--ink);font:13px/1.7 ui-monospace,SFMono-Regular,Menlo,monospace}.markdown-preview{min-height:540px;overflow:auto}.markdown-preview>div{font-size:14px;line-height:1.8}.markdown-preview h1,.markdown-preview h2,.markdown-preview h3{margin:1.15em 0 .45em}.markdown-preview blockquote{margin:14px 0;padding:9px 13px;border-left:3px solid var(--amber);background:#f6f4ee;color:var(--muted)}.rating-actions kbd{justify-self:start;align-self:end}.toast{z-index:2147483647}@media(max-width:900px){.detail-panel,.editor-layout{margin:0 18px}.editor-layout{grid-template-columns:1fr}.markdown-preview{min-height:260px}.editor-row{grid-template-columns:1fr}}
.empty-result{padding:28px 22px;border:1px dashed #bac3ae;border-radius:14px;background:linear-gradient(135deg,#fbfcf8,#f0f6e8);color:#63715a;font-size:13px;line-height:1.7;text-align:center}.detail-panel .empty-result:before{content:"◌";display:block;color:var(--amber);font-size:24px;margin-bottom:7px}.editor-layout{grid-template-columns:minmax(520px,1.5fr) minmax(300px,.7fr);height:calc(100vh - 165px);min-height:620px}.editor-form,.markdown-preview{height:100%;min-height:0}.editor-form{display:flex;flex-direction:column}.editor-form .markdown-editor{flex:1;min-height:0;height:100%;font-size:14px;line-height:1.8}.editor-toolbar{display:flex;align-items:center;gap:10px;margin:-2px 0 10px;color:var(--muted);font-size:11px}.editor-toolbar button{border:1px solid var(--line);background:#f7f8f3;border-radius:7px;padding:6px 9px;cursor:pointer}.topic-card .topic-actions{flex-wrap:nowrap}.topic-card .topic-actions button,.card-row .row-actions button{white-space:nowrap}.topic-card .topic-actions{display:flex}.topic-card .topic-actions button{writing-mode:horizontal-tb}.detail-page{overflow:hidden}.detail-page .detail-panel{height:calc(100vh - 190px);overflow:hidden}.detail-page #topicQuestionTable{max-height:calc(100vh - 330px);overflow:auto}.detail-page .card-row .row-actions{display:flex;flex-wrap:nowrap;align-items:center}.import-target{margin-top:14px;text-align:left}.import-target input{margin-top:8px}@media(max-width:900px){.editor-layout{height:auto;min-height:0}.editor-form{min-height:560px}.detail-page{overflow:auto}.detail-page .detail-panel{height:auto}.detail-page #topicQuestionTable{max-height:none}}
.empty-result{padding:28px 22px;border:1px dashed #bac3ae;border-radius:14px;background:linear-gradient(135deg,#fbfcf8,#f0f6e8);color:#63715a;font-size:13px;line-height:1.7;text-align:center}.detail-panel .empty-result:before{content:"◌";display:block;color:var(--amber);font-size:24px;margin-bottom:7px}.editor-layout{grid-template-columns:minmax(520px,1.5fr) minmax(300px,.7fr);height:calc(100vh - 165px);min-height:620px}.editor-form,.markdown-preview{height:100%;min-height:0}.editor-form{display:flex;flex-direction:column}.editor-form .markdown-editor{flex:1;min-height:0;height:100%;font-size:14px;line-height:1.8}.editor-toolbar{display:flex;align-items:center;gap:10px;margin:-2px 0 10px;color:var(--muted);font-size:11px}.editor-toolbar button{border:1px solid var(--line);background:#f7f8f3;border-radius:7px;padding:6px 9px;cursor:pointer}.topic-card .topic-actions{flex-wrap:nowrap}.topic-card .topic-actions button,.card-row .row-actions button{white-space:nowrap}.topic-card .topic-actions{display:flex}.topic-card .topic-actions button{writing-mode:horizontal-tb}.detail-page{overflow:hidden}.detail-page .detail-panel{box-sizing:border-box;height:calc(100vh - 190px);overflow:hidden}.detail-page #topicQuestionTable{max-height:calc(100vh - 330px);overflow:auto}#questionDetailPage .question-detail{overflow-y:auto;overscroll-behavior:contain;scrollbar-gutter:stable}.detail-page .card-row .row-actions{display:flex;flex-wrap:nowrap;align-items:center}.import-target{margin-top:14px;text-align:left}.import-target input{margin-top:8px}@media(max-width:900px){.editor-layout{height:auto;min-height:0}.editor-form{min-height:560px}.detail-page{overflow:auto}.detail-page .detail-panel{height:auto}.detail-page #topicQuestionTable{max-height:none}}
.empty-topic{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:300px;padding:34px;border:1px dashed #bfcbaf;border-radius:18px;background:radial-gradient(circle at top,#f5faed,#fafbf8 68%);text-align:center}.empty-topic-mark{display:grid;place-items:center;width:44px;height:44px;border-radius:14px;background:#1d2839;color:#d2ef7a;font-size:26px;box-shadow:0 10px 24px rgba(23,35,59,.17)}.empty-topic h3{margin:15px 0 6px;font-size:17px}.empty-topic p{max-width:340px;margin:0 0 18px;color:var(--muted);font-size:12px;line-height:1.7}
.shortcut-grid{display:grid;grid-template-columns:repeat(3,minmax(120px,1fr));gap:10px;margin:18px 0}.shortcut-grid .field{margin:0}.shortcut-grid input{text-align:center;text-transform:uppercase;font:700 14px ui-monospace,monospace}@media(max-width:700px){.shortcut-grid{grid-template-columns:repeat(2,1fr)}}
#libraryPage #questionSectionTitle,#libraryPage #questionSectionMeta,#libraryPage #cardTable,#libraryPage .library-content>.table-head{display:none}#libraryPage .library-content>.content-toolbar:last-of-type{display:none}
.drop-zone{transition:border-color .18s,background .18s,transform .18s}.drop-zone.dragging{border:2px solid #7faf29;background:#eef8df;transform:scale(1.015);color:#111}.drop-zone.dragging:before{content:"松开即可校验并导入";font-size:11px;font-weight:800;color:#4d7211}
.validation-result.warning{background:#fff9df;border:1px solid #ead992}.validation-actions{position:sticky;bottom:-11px;display:flex;justify-content:flex-end;gap:8px;margin:12px -13px -11px;padding:10px 13px;background:inherit;border-top:1px solid rgba(0,0,0,.08)}.validation-actions button{border:1px solid #c7c7be;background:#fff;border-radius:8px;padding:9px 13px;font-size:11px;font-weight:700;cursor:pointer}.validation-actions .continue{background:#111;color:#fff;border-color:#111}
.header-actions,.row-actions,.study-toolbar,.review-timer,.content-toolbar,.panel-title,.dialog-actions{display:flex;align-items:center;gap:8px}.study-toolbar{width:min(760px,100%);justify-content:space-between;margin-bottom:12px}.review-timer{background:#fff;border:1px solid var(--line);border-radius:10px;padding:6px}.review-timer b{font:700 13px ui-monospace,monospace;padding:0 7px}.review-timer button,.row-actions button,.topic-actions button,.card-row .row-actions button,.panel-title button{border:0;background:#efefeb;border-radius:7px;padding:6px 8px;font-size:10px;cursor:pointer}.review-timer button:disabled{opacity:.45}.panel-title{justify-content:space-between}.panel-title button{font-size:16px}.content-toolbar{justify-content:space-between;margin:15px 0 9px}.content-toolbar h3,.content-toolbar p{margin:0}.content-toolbar p{font-size:10px;color:var(--muted);margin-top:4px}.topic-card{cursor:pointer}.topic-card.active{outline:2px solid #111}.topic-actions{display:flex;gap:5px;margin-top:10px}.topic-actions button:first-child{background:#111;color:#fff}.question-link{border:0;background:transparent;text-align:left;cursor:pointer}.stars{display:block;color:#567d13;cursor:pointer}.card-row small{display:block;color:var(--muted);margin-top:4px}.empty-create{width:100%;min-height:105px;border:1px dashed #aaa;background:#fafaf7;border-radius:14px;cursor:pointer}.field{display:block;margin:14px 0}.field>span{display:block;font-size:11px;font-weight:750;margin-bottom:7px}.field input,.field textarea,.field select{box-sizing:border-box;width:100%;border:1px solid var(--line);border-radius:10px;padding:11px;background:#fff;font:13px inherit}.field textarea{min-height:110px;resize:vertical}.dialog-actions{justify-content:flex-end;margin-top:18px}#entityDialog,#reviewDialog{width:min(540px,calc(100vw - 32px));border:0;border-radius:18px;padding:25px;box-sizing:border-box}#entityDialog::backdrop,#reviewDialog::backdrop{background:rgba(0,0,0,.35);backdrop-filter:blur(3px)}.check-list{max-height:300px;overflow:auto;border:1px solid var(--line);border-radius:10px}.check-list label{display:flex;gap:8px;padding:10px;border-bottom:1px solid var(--line);font-size:11px}.check-list small{display:block;color:var(--muted);margin-top:3px}.recommend-note{background:#f1f6e8;border:1px solid #dce8c5;border-radius:12px;padding:13px;font-size:11px;line-height:1.6}.recommend-note p{margin:5px 0 0;color:var(--muted)}.detail-card h3{font-size:22px}.detail-card div{line-height:1.8}.detail-card small{display:block;color:var(--muted);margin-top:16px}.ai-result{margin-top:18px;border-top:1px solid var(--line);padding-top:18px}.generated-answer{background:#f3f7ea;border-radius:12px;padding:15px;line-height:1.7;font-size:13px}.ai-save-grid{display:grid;grid-template-columns:1fr 1fr .7fr;gap:8px}.ai-coach>.field textarea{min-height:140px}.settings-group .field{max-width:520px}
.library-content{overflow:auto;overscroll-behavior:contain}.library-content::-webkit-scrollbar,.spaces-panel::-webkit-scrollbar,.settings-content::-webkit-scrollbar,.card-table::-webkit-scrollbar{width:9px}.library-content::-webkit-scrollbar-thumb,.spaces-panel::-webkit-scrollbar-thumb,.settings-content::-webkit-scrollbar-thumb,.card-table::-webkit-scrollbar-thumb{background:#cfd1ca;border-radius:999px}.field-inline{display:flex;gap:8px}.field-inline select{flex:1}.field small{display:block;color:var(--muted);font-size:10px;margin-top:6px}.select-control,.field select{appearance:none;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14'%3E%3Cpath d='m3 5 4 4 4-4' fill='none' stroke='%23111' stroke-width='1.6'/%3E%3C/svg%3E") no-repeat right 11px center!important;padding-right:34px!important;cursor:pointer}.select-control:focus,.field select:focus{outline:2px solid #b8f34a;outline-offset:1px}#confirmDialog{width:min(470px,calc(100vw - 32px));border:0;border-radius:18px;padding:25px;box-sizing:border-box}#confirmDialog::backdrop{background:rgba(0,0,0,.35);backdrop-filter:blur(3px)}#confirmCopy{font-size:13px;color:var(--muted);line-height:1.65}.danger-action{background:#111;color:#fff;border:0;border-radius:10px;padding:10px 14px;cursor:pointer}.record-list article,.dev-log article{padding:13px 0;border-bottom:1px solid var(--line)}.record-list article:last-child,.dev-log article:last-child{border:0}.record-list b,.record-list small,.dev-log b,.dev-log small{display:block}.record-list small,.dev-log small{font-size:10px;color:var(--muted);margin-top:5px}.dev-log p{font-size:12px;line-height:1.6;margin:8px 0 0}.code-example{white-space:pre-wrap;background:#141414;color:#d8f9a4;border-radius:12px;padding:15px;font:12px/1.7 ui-monospace,monospace}.mastery-row b{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
body[data-theme="paper"]{--canvas:#f5eee2;--paper:#fffaf1;--ink:#322c25;--line:#ddd1c1}body[data-theme="paper"] .rail{background:#43382d}body[data-theme="paper"] .mini-progress i{background:#a35d34}body[data-theme="paper"] .primary-action{background:#43382d}body[data-theme="night"]{--canvas:#151515;--paper:#202020;--ink:#f6f6f1;--muted:#aaa;--line:#393939}body[data-theme="night"] .queue,body[data-theme="night"] .workspace-page,body[data-theme="night"] .card-face,body[data-theme="night"] .library-content,body[data-theme="night"] .spaces-panel,body[data-theme="night"] .settings-group,body[data-theme="night"] .metric-grid article,body[data-theme="night"] .chart-card,body[data-theme="night"] .weak-card,body[data-theme="night"] .mastery-section{background:#202020!important;color:#f6f6f1}body[data-theme="night"] .workspace{background:#151515}body[data-theme="night"] .field input,body[data-theme="night"] .field textarea,body[data-theme="night"] .field select{background-color:#292929;color:#fff}body[data-theme="night"] .ghost-action{background:#292929;color:#fff;border-color:#444}
body[data-theme="night"]{background:#111310;color:var(--ink)}body[data-theme="night"] .topbar{background:rgba(20,23,20,.94);border-color:#343934;color:#f4f6f1}body[data-theme="night"] .breadcrumb,body[data-theme="night"] .text-button,body[data-theme="night"] .keyboard-help,body[data-theme="night"] .rating-panel>p,body[data-theme="night"] .study-meta{color:#aeb8aa}body[data-theme="night"] .global-account #authBtn{border-color:#3d433b;background:rgba(31,35,30,.95);color:#f5f7f2;box-shadow:0 9px 28px rgba(0,0,0,.32)}body[data-theme="night"] .global-account #authBtn:hover{border-color:#65705f;background:#292e28}body[data-theme="night"] .flashcard-wrap .card-face{background:#20231f!important;border-color:#4b5348;box-shadow:0 28px 74px rgba(0,0,0,.38)}body[data-theme="night"] .answer-content,body[data-theme="night"] .card-back h2,body[data-theme="night"] .card-front h2{color:#f3f5f0}body[data-theme="night"] .answer-content code,body[data-theme="night"] .question-detail code,body[data-theme="night"] .markdown-preview code{background:#30372e;color:#dff4c3;border:1px solid #465141}body[data-theme="night"] .source-line{border-color:#485047;color:#aeb8aa}body[data-theme="night"] .review-timer{background:#20231f;border-color:#454c42;color:#f2f5ef}body[data-theme="night"] .review-timer button,body[data-theme="night"] .row-actions button,body[data-theme="night"] .topic-actions button,body[data-theme="night"] .panel-title button{background:#30342f;color:#e7ebe4}body[data-theme="night"] .review-timer button:hover,body[data-theme="night"] .row-actions button:hover,body[data-theme="night"] .topic-actions button:hover{background:#41463f}body[data-theme="night"] .rating-actions button{background:#242724;border-color:#454b43;color:#edf1e9}body[data-theme="night"] .rating-actions button:hover{background:#2d312c;border-color:#687164}body[data-theme="night"] .rating-actions button>span{color:#d9e4d2}body[data-theme="night"] .rating-actions button small{color:#aab3a5}body[data-theme="night"] .rating-actions .primary{background:#b8f34a;border-color:#b8f34a;color:#12150f}body[data-theme="night"] .rating-actions .primary span,body[data-theme="night"] .rating-actions .primary small{color:#12150f}body[data-theme="night"] kbd{border-color:#555d52;background:#30342f;color:#e5ebe0}body[data-theme="night"] .status-pill,body[data-theme="night"] .eyebrow,body[data-theme="night"] .card-kicker{color:#a9df43!important}body[data-theme="night"] .question-item:hover,body[data-theme="night"] .question-item.active{background:#2b3029}body[data-theme="night"] .question-item{border-color:#353a34}body[data-theme="night"] .ring:before{background:#202020}body[data-theme="night"] .mobile-nav{background:rgba(22,25,22,.96);border-color:#373d36}body[data-theme="night"] .search-box,body[data-theme="night"] .segmented .active,body[data-theme="night"] .theme-choice,body[data-theme="night"] .date-switch,body[data-theme="night"] .editor-form,body[data-theme="night"] .markdown-preview,body[data-theme="night"] .detail-panel{background:#20231f;color:#f4f6f1;border-color:#3d433b}body[data-theme="night"] .search-box input{background:transparent;color:#f4f6f1}body[data-theme="night"] .app-select-menu button:hover,body[data-theme="night"] .app-select-menu button.selected,body[data-theme="night"] .space-row.active,body[data-theme="night"] .settings-menu .active{background:#30382b;color:#dff4c3}body[data-theme="night"] .empty-result,body[data-theme="night"] .empty-topic{background:#242824;color:#b8c2b4;border-color:#465044}body[data-theme="night"] ::-webkit-scrollbar-thumb{background:#4b5349}body[data-theme="night"] ::-webkit-scrollbar-track{background:#191b18}
.native-select-hidden{position:absolute!important;opacity:0!important;pointer-events:none!important;width:1px!important;height:1px!important}.app-select{position:relative;width:100%}.app-select-trigger{width:100%;border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:10px;padding:11px 34px 11px 11px;text-align:left;font:13px inherit;cursor:pointer;position:relative}.app-select-trigger:after{content:"⌄";position:absolute;right:11px;color:var(--muted)}.app-select-menu{display:none;position:absolute;z-index:40;top:calc(100% + 5px);width:100%;box-sizing:border-box;max-height:220px;overflow:auto;background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:4px;box-shadow:0 14px 35px rgba(0,0,0,.17)}.app-select.open .app-select-menu{display:block}.app-select-menu button{display:block;width:100%;border:0;border-radius:7px;background:transparent;color:var(--ink);padding:9px;text-align:left;font:12px inherit;cursor:pointer}.app-select-menu button:hover,.app-select-menu button.selected{background:#eaf7d4}
@media(max-width:600px){.study-toolbar{align-items:flex-start;flex-direction:column}.review-timer{width:100%;box-sizing:border-box}.review-timer b{margin-right:auto}.header-actions{flex-direction:column;align-items:stretch}.ai-save-grid{grid-template-columns:1fr}.content-toolbar{align-items:flex-end}}
@media(max-width:600px){.library-layout{grid-template-columns:1fr}.spaces-panel{display:block;max-height:210px}}
.auth-hint,.auth-status{font-size:12px;line-height:1.55;color:var(--muted)}.auth-status{min-height:19px;margin:10px 0}.code-field{display:flex;gap:8px}.code-field input{min-width:0;flex:1}.code-field button{white-space:nowrap}.code-field button:disabled{cursor:not-allowed;opacity:.58}@media(max-width:520px){.code-field{align-items:stretch;flex-direction:column}.code-field button{width:100%}}
.editor-form .field:has(#editorAnswer){display:none}.block-editor-host{position:relative;min-height:420px;margin:12px 0 18px;padding:22px 26px;border:1px solid #dfe4d8;border-radius:14px;background:#fff;box-shadow:inset 0 1px 0 #fff}.block-editor-canvas{min-height:375px;outline:0;font:15px/1.85 ui-serif,"Songti SC",serif;color:#1e251d}.block-editor-canvas>p:first-child{margin-top:0}.block-editor-canvas h1,.block-editor-canvas h2,.block-editor-canvas h3{font-family:inherit;line-height:1.35;margin:1.3em 0 .55em}.block-editor-canvas h2{font-size:24px}.block-editor-canvas blockquote{margin:16px 0;padding:12px 15px;border-left:3px solid #7aa933;background:#f3f8ea;color:#43533d;border-radius:0 10px 10px 0}.block-editor-canvas pre{margin:16px 0;padding:15px 17px;border-radius:10px;background:#172019;color:#e9f7d6;overflow:auto;font:13px/1.65 ui-monospace,monospace}.block-editor-canvas figure{margin:18px 0}.block-editor-canvas img{max-width:100%;border-radius:10px}.block-editor-canvas figcaption{font-size:11px;color:var(--muted);text-align:center}.block-editor-canvas table{width:100%;border-collapse:collapse;margin:16px 0}.block-editor-canvas td,.block-editor-canvas th{border:1px solid #dfe4d8;padding:8px 10px;text-align:left}.slash-menu{position:fixed;z-index:2147483000;display:grid;grid-template-columns:repeat(2,minmax(110px,1fr));gap:4px;width:260px;max-height:calc(100vh - 20px);overflow:auto;padding:8px;background:#fff;border:1px solid #d9ded3;border-radius:12px;box-shadow:0 16px 42px rgba(25,35,22,.20)}.slash-menu[hidden]{display:none!important}.slash-menu button{border:0;border-radius:7px;padding:9px;text-align:left;background:#fff;font-size:12px;cursor:pointer}.slash-menu button:hover{background:#eff7e2}
.editor-toolbar{flex-wrap:wrap;row-gap:6px}.editor-quick-cards{display:flex;flex-wrap:wrap;gap:5px}.editor-quick-cards button{border:1px solid #d8e4ca;background:#f7fbf1;border-radius:7px;padding:6px 8px;color:#486b1c;font-size:11px;cursor:pointer}.editor-quick-cards button:hover{background:#e8f4d8}
.editor-mode-button{margin-left:auto;white-space:nowrap}.editor-form.markdown-mode .block-editor-host{display:none}.editor-form.markdown-mode .field:has(#editorAnswer){display:block;flex:1}.editor-form.markdown-mode .markdown-editor{display:block;min-height:375px}
.editor-markdown-hint{margin:-2px 0 12px;color:var(--muted);font-size:10px;line-height:1.55}
.editor-outline{margin-top:22px;padding-top:15px;border-top:1px solid var(--line)}.editor-outline b,.editor-outline small,.editor-outline button{display:block}.editor-outline b{font-size:11px;margin-bottom:8px}.editor-outline small{font-size:11px;color:var(--muted)}.editor-outline button{width:100%;border:0;background:transparent;padding:6px 0;text-align:left;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#64705d;font-size:11px;cursor:pointer}.editor-outline button:hover{color:#355812}.editor-outline .level-2{padding-left:10px}.editor-outline .level-3{padding-left:20px}
.answer-block{position:relative;cursor:text}.block-drag-handle{position:absolute;left:-21px;top:.55em;width:14px;height:18px;opacity:0;cursor:grab}.block-drag-handle:before{content:"⋮⋮";position:absolute;color:#8da36d;font:700 13px/1 sans-serif;letter-spacing:-3px}.answer-block:hover>.block-drag-handle,.block-drag-handle:focus-visible{opacity:1}.block-drag-handle:active{cursor:grabbing}
.block-editor-canvas [data-block="formula"]{margin:18px 0;padding:16px 20px;border:1px solid #dce8c5;border-radius:10px;background:#f6faef;text-align:center;white-space:pre-wrap;font:italic 20px/1.5 Georgia,serif;color:#314728}.block-editor-canvas [data-block="formula"]:before{content:"LaTeX";display:block;margin-bottom:6px;color:#849777;font:700 9px/1 Inter,sans-serif;letter-spacing:.12em}
.block-editor-canvas pre[data-language]:before{content:attr(data-language);display:block;margin-bottom:8px;color:#a9c59b;font:700 9px/1 Inter,sans-serif;letter-spacing:.11em;text-transform:uppercase}.block-editor-canvas ul[data-block="todo"]{padding-left:4px;list-style:none}.block-editor-canvas ul[data-block="todo"] li{display:flex;gap:9px;align-items:flex-start;margin:8px 0}.block-editor-canvas ul[data-block="todo"] input{margin-top:7px;accent-color:#6f9f2d}.block-editor-canvas details{margin:17px 0;border:1px solid #dce4d4;border-radius:10px;padding:11px 14px;background:#fbfdf8}.block-editor-canvas details summary{cursor:pointer;font-weight:700}.block-editor-canvas details p{margin:11px 0 2px;color:#53634b}
.answer-content pre,.question-detail pre,.markdown-preview pre{margin:16px 0;padding:16px 18px;border-radius:11px;background:#172019;color:#e9f7d6;overflow:auto;white-space:pre;font:13px/1.65 ui-monospace,SFMono-Regular,Menlo,monospace}.answer-content pre:before,.question-detail pre:before,.markdown-preview pre:before{content:attr(data-language);display:block;margin-bottom:9px;color:#a9c59b;font:700 9px/1 Inter,sans-serif;letter-spacing:.11em;text-transform:uppercase}.answer-content pre code,.question-detail pre code,.markdown-preview pre code{font:inherit;color:inherit;background:transparent}
.block-editor-canvas blockquote[data-block="callout"]{border-left-color:#4b8bd7;background:#eef6ff;color:#234a75}.block-editor-canvas blockquote[data-block="callout"]:before{content:"提示";display:block;margin-bottom:5px;color:#4b7fb5;font:700 9px/1 Inter,sans-serif;letter-spacing:.12em}
@media(max-width:700px){.editor-page{padding:0 14px 28px}.editor-page .page-header{display:block;padding:18px 0}.editor-page .header-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));width:100%;margin-top:12px;gap:8px}.editor-page .header-actions button{min-width:0;white-space:normal}.editor-page #saveQuestionEditorBtn{grid-column:1/-1}.editor-page .editor-layout{margin:0;display:block}.editor-page .markdown-preview{margin-top:16px;min-height:0}.block-editor-host{min-height:340px;padding:16px}.block-editor-canvas{min-height:300px;font-size:16px}.slash-menu{width:min(260px,calc(100vw - 20px))}.editor-toolbar{overflow:auto;padding-bottom:4px}.editor-toolbar>span{display:none}}
.block-editor-canvas pre:after{content:"双击复制";position:absolute;right:10px;top:8px;color:#a9c59b;font:700 9px/1 Inter,sans-serif}.block-editor-canvas pre{position:relative}.block-editor-canvas pre[data-copied]:after{content:"已复制"}
#authDialog{width:min(440px,calc(100vw - 28px));border:0;border-radius:24px;padding:0;overflow:hidden;background:#fff;color:#171a16;box-shadow:0 28px 90px rgba(0,0,0,.3)}#authDialog::backdrop{background:rgba(15,20,13,.55);backdrop-filter:blur(7px)}.auth-shell{padding:30px}.auth-brand{display:flex;align-items:center;gap:10px;margin-bottom:29px}.auth-brand img{width:34px;height:34px;border-radius:10px}.auth-brand b,.auth-brand small{display:block}.auth-brand b{font-size:14px}.auth-brand small{font-size:10px;color:#75806d;margin-top:3px}.auth-heading h2{font-size:25px;margin:6px 0 8px;letter-spacing:-.03em}.auth-heading>p:last-child{margin:0;color:#6e7768;font-size:13px}.auth-heading .eyebrow{font-size:10px;letter-spacing:.12em;margin:0}.auth-shell .field{margin:17px 0}.auth-shell .field>span{font-size:12px}.auth-shell .field em{font-style:normal;color:#899286;font-weight:500}.auth-shell input{height:45px;border-color:#dce1d7;background:#fbfcfa;transition:border-color .18s,box-shadow .18s}.auth-shell input:focus{outline:0;border-color:#111;box-shadow:0 0 0 3px #e7f5ce}.auth-shell .auth-submit{width:100%;height:46px;margin-top:6px;border-radius:12px;font-size:13px}.auth-links{display:flex;justify-content:space-between;margin:-5px 0 20px}.auth-links button,.auth-switch button{border:0;background:none;padding:0;color:#52741b;font:700 11px inherit;cursor:pointer}.auth-switch{text-align:center;font-size:12px;color:#7a8375;margin:18px 0 0}.auth-switch button{margin-left:4px;font-size:12px}.auth-status{min-height:18px;margin:12px 0 0;text-align:center;color:#9b503e}.auth-shell .code-field{gap:9px}.auth-shell .code-field input{flex:1}.auth-shell .code-field .ghost-action{border-radius:10px;min-width:104px;font-size:11px;font-weight:700;background:#f3f6ee}@media(max-width:520px){.auth-shell{padding:24px 20px}.auth-heading h2{font-size:23px}}
body.auth-required .app-shell,body.auth-required .mobile-nav,body.auth-checking .app-shell,body.auth-checking .mobile-nav{pointer-events:none;user-select:none;filter:blur(2px)}body.auth-required #authDialog .dialog-close[hidden]{display:none!important}body.auth-checking:after{content:"正在验证登录状态…";position:fixed;inset:0;z-index:2147483000;display:grid;place-items:center;background:rgba(246,247,242,.88);color:#526047;font:700 13px/1.5 Inter,sans-serif;backdrop-filter:blur(5px)}
.global-account{position:fixed;z-index:30;top:16px;right:24px;height:44px;display:flex;align-items:center}.global-account #authBtn{min-height:40px;max-width:210px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:7px 12px;border:1px solid rgba(0,0,0,.09);border-radius:12px;background:rgba(255,255,255,.92);color:var(--ink);box-shadow:0 8px 24px rgba(20,25,18,.10);backdrop-filter:blur(14px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.global-account #authBtn:hover{background:#fff;border-color:#cfd5c7}.global-account .account-avatar{flex:0 0 auto}.topbar{padding-right:220px}.workspace-page .page-header{padding-right:190px}@media(max-width:900px){.global-account{top:10px;right:12px;height:38px}.global-account #authBtn{min-height:36px;max-width:150px;padding:6px 9px;font-size:11px}.topbar{padding-right:170px}.workspace-page{padding-top:66px}.workspace-page .page-header{padding-right:0}}@media(max-width:600px){.global-account{z-index:35}.global-account #authBtn{max-width:128px}.topbar{padding-right:154px}.top-actions #editFromReviewBtn{display:none}}
.parser-guide{display:flex;flex-direction:column;gap:18px}.parser-notice{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:17px 18px;border-radius:14px;background:#f1f8e7;border:1px solid #dcecc6}.parser-notice b,.parser-format-row b,.parser-warning b{font-size:12px}.parser-notice p,.parser-format-row p,.parser-warning p{margin:5px 0 0;color:var(--muted);font-size:10px;line-height:1.6}.parser-notice button{flex:0 0 auto}.parser-rule-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.parser-rule-grid article{padding:17px;border:1px solid var(--line);border-radius:14px;background:#fbfcfa}.parser-rule-grid span{display:inline-block;padding:4px 7px;border-radius:999px;background:#eaf7d4;color:#4d7211;font-size:9px;font-weight:700}.parser-rule-grid h3,.parser-prompt h3{margin:10px 0 7px;font-size:13px}.parser-rule-grid p{margin:0;color:var(--muted);font-size:10px;line-height:1.7}.parser-format-row{display:flex;align-items:center;justify-content:space-between;padding:0 2px}.parser-format-row strong{font-size:16px}.parser-prompt{padding:18px;border-radius:15px;background:#151713;color:#f5f7f1}.parser-prompt .section-head h3{margin:0;color:#fff}.parser-prompt .section-head p{margin:5px 0 0;color:#aeb5a7;font-size:10px}.parser-prompt .ghost-action{border-color:#42463e;background:#242721;color:#fff}.parser-prompt textarea{width:100%;min-height:260px;margin-top:15px;padding:15px;border:1px solid #353931;border-radius:11px;resize:vertical;background:#0d0f0c;color:#dce8ce;font:11px/1.75 ui-monospace,SFMono-Regular,Menlo,monospace}.parser-prompt textarea:focus{outline:2px solid #b8f34a}.parser-warning{padding:13px 15px;border-left:3px solid #9abf5c;background:#f8faf5}@media(max-width:700px){.parser-notice{align-items:flex-start;flex-direction:column}.parser-notice button{width:100%}.parser-rule-grid{grid-template-columns:1fr}.parser-prompt .section-head{align-items:flex-start;gap:12px}.parser-prompt textarea{min-height:330px}}
.parser-prompt-rule{display:grid;grid-template-columns:auto minmax(220px,340px);align-items:center;justify-content:space-between;gap:14px;margin-top:16px}.parser-prompt-rule span{color:#cbd1c5;font-size:10px;font-weight:700}.parser-prompt-rule select,.parser-prompt-rule .app-select-trigger{width:100%;border:1px solid #42483e;border-radius:9px;padding:9px 34px 9px 11px;background:#242721;color:#fff;font:11px inherit}.parser-prompt-rule .app-select-menu{background:#242721;border-color:#42483e}.parser-prompt-rule .app-select-menu button{color:#edf3e8}.parser-prompt-rule .app-select-menu button:hover,.parser-prompt-rule .app-select-menu button.selected{background:#384331;color:#dff4c3}@media(max-width:600px){.parser-prompt-rule{grid-template-columns:1fr}.parser-prompt-rule select{max-width:none}}
body[data-review-font="small"] .answer-content{font-size:13px}body[data-review-font="medium"] .answer-content{font-size:15px}body[data-review-font="large"] .answer-content{font-size:18px;line-height:1.9}body.reduce-motion .flashcard{transition:none}body.reduce-motion *,body.reduce-motion *:before,body.reduce-motion *:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important}body.hide-shortcut-hints .keyboard-help,body.hide-shortcut-hints .rating-actions kbd,body.hide-shortcut-hints .reveal-button kbd,body.hide-shortcut-hints .review-timer kbd{display:none}
.account-entry{display:inline-flex;align-items:center;gap:7px!important;color:var(--ink)!important;font-weight:700}.account-avatar{width:27px;height:27px;display:grid;place-items:center;border-radius:9px;background:#111;color:#fff;font-size:11px}#profileDialog{width:min(470px,calc(100vw - 28px));border:0;border-radius:24px;padding:0;overflow:hidden;background:#fff;color:#171a16;box-shadow:0 28px 90px rgba(0,0,0,.3)}#profileDialog::backdrop{background:rgba(15,20,13,.55);backdrop-filter:blur(7px)}.profile-shell{position:relative;padding:30px}.profile-shell #profileForm{padding:0;text-align:left}.profile-shell #profileForm .field{margin:17px 0 0}.profile-hero{display:flex;align-items:center;gap:15px;padding:4px 0 22px}.profile-avatar{width:58px;height:58px;display:grid;place-items:center;border-radius:18px;background:linear-gradient(135deg,#20251d,#52741b);color:#fff;font-size:22px;font-weight:800;box-shadow:0 10px 25px rgba(51,78,18,.18)}.profile-hero .eyebrow{margin:0 0 4px}.profile-hero h2{margin:0;font-size:23px}.profile-hero div>p:last-child{margin:4px 0 0;color:#737c6e;font-size:12px}.profile-metrics{display:grid;grid-template-columns:1fr 1fr;gap:10px}.profile-metrics article{padding:15px;border:1px solid #e1e5dc;border-radius:14px;background:#f8faf5}.profile-metrics span,.profile-metrics b{display:block}.profile-metrics span{color:#7b8476;font-size:10px}.profile-metrics b{margin-top:7px;font-size:18px}.profile-name-row{display:flex;gap:8px}.profile-name-row input{flex:1;min-width:0}.profile-name-row button{white-space:nowrap}.profile-actions{display:grid;grid-template-columns:1fr auto;gap:9px;margin-top:20px}.profile-actions button{min-height:43px}.danger-lite-button{border:1px solid #e5c9c6;border-radius:11px;padding:0 15px;background:#fff7f6;color:#aa453f;cursor:pointer}.profile-tip{margin:15px 0 0;color:#7c8578;font-size:10px;text-align:center}@media(max-width:520px){.profile-shell{padding:24px 20px}.profile-actions{grid-template-columns:1fr}.profile-name-row{align-items:stretch}.profile-name-row button{padding-inline:10px}}
.chart-card{overflow:hidden}.bar-item i{max-height:145px}
.breadcrumb{display:flex;align-items:center;min-width:0;max-width:min(52vw,620px);white-space:nowrap}.breadcrumb span{min-width:0;overflow:hidden;text-overflow:ellipsis}.breadcrumb #spaceLabel,.breadcrumb #topicLabel{flex:0 1 auto}.breadcrumb #sectionLabel{flex:1 1 220px}.breadcrumb i{flex:0 0 auto;color:#a0a59d}.focus-reminder{width:min(430px,calc(100vw - 30px));border:0;border-radius:24px;padding:0;background:#141712;color:#f7faF2;box-shadow:0 30px 100px rgba(0,0,0,.38)}.focus-reminder::backdrop{background:rgba(15,18,13,.58);backdrop-filter:blur(7px)}.focus-reminder-shell{padding:34px;text-align:center}.focus-reminder-icon{width:54px;height:54px;margin:0 auto 18px;display:grid;place-items:center;border-radius:18px;background:#b8f34a;color:#111;font-size:25px;box-shadow:0 12px 34px rgba(184,243,74,.22)}.focus-reminder h2{margin:7px 0 10px;font-size:26px}.focus-reminder p:not(.eyebrow){margin:0 auto 24px;max-width:330px;color:#bcc5b6;font-size:13px;line-height:1.75}.focus-reminder .primary-action{width:100%;background:#b8f34a;color:#111;box-shadow:none}@media(max-width:900px){.breadcrumb{max-width:38vw}.breadcrumb #sectionLabel{display:none}.breadcrumb i:last-of-type{display:none}}@media(max-width:600px){.breadcrumb{max-width:calc(100vw - 220px)}.breadcrumb #spaceLabel{display:none}.breadcrumb i:first-of-type{display:none}.focus-reminder-shell{padding:28px 22px}}
.field small{display:block;margin-top:6px;color:var(--muted);font-size:10px;line-height:1.5}.question-tags{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:20px}.question-tag{display:inline-flex;align-items:center;padding:5px 9px;border-radius:999px;background:#eaf7d4;color:#4d7211;font-size:10px;font-weight:700}body[data-theme="night"] .question-tag{background:#354229;color:#dff4c3}
.import-ai-option{display:flex;align-items:flex-start;gap:10px;margin:15px 0;padding:13px 14px;border:1px solid #dce8c5;border-radius:12px;background:#f6faef;text-align:left;cursor:pointer}.import-ai-option input{width:17px;height:17px;margin-top:2px;accent-color:#111}.import-ai-option span{min-width:0}.import-ai-option b,.import-ai-option small{display:block}.import-ai-option b{font-size:12px}.import-ai-option small{margin-top:5px;color:var(--muted);font-size:10px;line-height:1.5}body[data-theme="night"] .import-ai-option{background:#293026;border-color:#465141}
.library-toolbar-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}.library-toolbar-actions .primary-action{min-height:42px;padding:10px 17px;white-space:nowrap}.topbar{gap:18px}.breadcrumb{flex:1 1 auto;max-width:none;overflow-x:auto;scrollbar-width:none}.breadcrumb::-webkit-scrollbar{display:none}.breadcrumb span{flex:0 0 auto;overflow:visible;text-overflow:clip}.breadcrumb #spaceLabel,.breadcrumb #topicLabel,.breadcrumb #sectionLabel{flex:0 0 auto}.top-actions{flex:0 0 auto}@media(max-width:900px){.breadcrumb{max-width:none}.breadcrumb #sectionLabel{display:inline}.breadcrumb i:last-of-type{display:inline}}@media(max-width:600px){.library-toolbar-actions{width:100%;justify-content:space-between;margin-top:10px}.library-toolbar-actions .segmented{margin-top:0}.library-toolbar-actions .primary-action{font-size:12px;padding:10px 13px}.breadcrumb{max-width:none}.breadcrumb #spaceLabel{display:inline}.breadcrumb i:first-of-type{display:inline}}
.review-timer button{display:inline-flex;align-items:center;gap:5px}.review-timer button kbd{padding:1px 4px;font-size:8px;line-height:1.25;background:#fff;color:#656b62}@media(max-width:600px){.review-timer button{gap:3px;padding-inline:7px}.review-timer button kbd{font-size:7px}}
.review-answer-entry{width:100%;margin:18px 0 14px;padding:13px 14px;border:1px solid #dfe5d8;border-radius:13px;background:#fafcf7}.review-answer-entry>div:first-child{display:flex;justify-content:space-between;gap:12px;align-items:baseline}.review-answer-entry b{font-size:12px}.review-answer-entry small{font-size:10px;color:var(--muted)}.review-answer-entry textarea{display:block;width:100%;min-height:68px;max-height:110px;resize:vertical;margin:9px 0;border:1px solid var(--line);border-radius:9px;padding:9px 10px;background:#fff;color:var(--ink);font:13px/1.6 inherit}.review-answer-actions{display:flex;justify-content:flex-end;gap:8px}.review-answer-actions button{padding:7px 10px;font-size:11px}.review-ai-result{margin-top:12px;padding-top:12px;border-top:1px solid #e2e8da;font-size:12px;line-height:1.6}.ai-score-line{display:grid;grid-template-columns:auto 1fr;column-gap:9px;align-items:baseline}.ai-score-line strong{font-size:28px;line-height:1;color:#4e7e12}.ai-score-line span{font-weight:700}.ai-score-line small{grid-column:2;color:var(--muted)}.ai-feedback{margin:9px 0}.ai-feedback b,.ai-suggestion b,.ai-follow-up b{display:block;font-size:11px}.ai-feedback ul{margin:3px 0 0;padding-left:17px}.ai-feedback.covered b{color:#43804c}.ai-feedback.missing b{color:#9b6a18}.ai-feedback.issues b{color:#b0443d}.ai-suggestion,.ai-follow-up{margin:9px 0 0}.ai-follow-up{padding:8px 9px;border-radius:8px;background:#f0f6e8}@media(max-width:600px){.review-answer-entry{margin:13px 0 10px;padding:11px}.review-answer-entry>div:first-child{display:block}.review-answer-entry small{display:block;margin-top:3px}.review-answer-entry textarea{min-height:58px}.review-answer-actions button{flex:1}.ai-score-line strong{font-size:24px}}body[data-theme="night"] .review-answer-entry{background:#252a23;border-color:#465141}body[data-theme="night"] .review-answer-entry textarea{background:#1c201b;border-color:#485047;color:#eef3e9}body[data-theme="night"] .review-ai-result{border-color:#465141}body[data-theme="night"] .ai-follow-up{background:#30382b}
.editor-page{padding-top:94px}@media(max-width:1050px){.editor-page{padding-top:66px}}@media(max-width:600px){.editor-page{padding-top:66px}}
@media(min-width:601px){.table-head,.card-row{grid-template-columns:minmax(230px,1.5fr) 100px 100px minmax(180px,max-content)}.card-row .row-actions{display:grid;grid-auto-flow:column;grid-auto-columns:max-content;justify-content:start;white-space:nowrap;writing-mode:horizontal-tb}}
.points-checkin{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.points-checkin p{margin:5px 0 0;color:var(--muted);font-size:13px}.points-checkin .primary-action{width:auto;min-width:108px}
.points-rules{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:16px 0}.points-rules span{padding:10px;border:1px solid var(--line);border-radius:6px;color:var(--muted);font-size:12px}.points-rules b{display:block;color:var(--ink);font-size:18px}
.points-ledger{display:grid;gap:8px}.points-ledger>div{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-top:1px solid var(--line);font-size:13px}.points-ledger span{color:var(--muted)}.points-ledger b{color:#26815f}
@media(max-width:640px){.points-checkin{align-items:flex-start;flex-direction:column}.points-checkin .primary-action{width:100%}.points-rules{grid-template-columns:1fr}}