:root{--ink:#1d1d1f;--muted:#86868b;--blue:#0071e3;--line:#e8e8ed;--paper:#f5f5f7;--card:#fff;--success:#237b4b;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;font-size:14px;-webkit-font-smoothing:antialiased}button,select,input{font:inherit}a{color:inherit;text-decoration:none}button,a,select,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.6}button,a,select{touch-action:manipulation}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #0071e366;outline-offset:4px}.site-header{height:76px;max-width:1200px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:0 40px;border-bottom:1px solid #dedee580;gap:24px}.brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:650;letter-spacing:-.7px}.brand-icon{display:grid;place-items:center;width:30px;height:30px}.brand-icon svg{width:26px}.brand-divider{height:16px;width:1px;background:#cfcfd5;margin:0 3px}.brand-subtitle{font-size:13px;font-weight:450;letter-spacing:-.2px;color:#737379}nav{display:flex;gap:32px;font-size:12px;color:#737379}nav a{padding:12px 0;transition:color .2s}nav a:hover,nav a.active{color:var(--ink)}.local-badge{font-size:11px;color:#787880;display:flex;align-items:center;gap:7px}.local-badge>span{width:5px;height:5px;background:#50a276;border-radius:50%}main{max-width:1200px;margin:auto;padding:0 40px}.hero{display:grid;grid-template-columns:1fr 1fr;align-items:center;min-height:560px;padding:52px 0 58px;gap:32px}.eyebrow{font-size:10px;letter-spacing:1.8px;font-weight:600;color:var(--muted);margin:0 0 12px}.hero .eyebrow{font-size:12px;letter-spacing:2px;display:flex;align-items:center;gap:8px;color:#64646c}.tiny-dot{width:6px;height:6px;background:var(--blue);border-radius:50%}.hero h1{font-size:clamp(46px,5.2vw,68px);font-weight:650;line-height:1.2;letter-spacing:-3px;margin:22px 0}.hero h1>span{color:#939399}.hero-copy{font-size:16px;line-height:1.9;color:#77777e;margin:0 0 24px;letter-spacing:.2px}.hero-link{color:var(--blue);font-size:14px;font-weight:550;display:inline-flex;gap:14px;align-items:center}.hero-link:hover{color:#004eaf}.stats{display:flex;gap:24px;margin-top:35px;align-items:center}.stat{font-size:10px;color:var(--muted);display:flex;align-items:baseline;gap:5px}.stat+.stat{border-left:1px solid #dcdce1;padding-left:24px}.stat strong{font-size:20px;color:#48484e;font-weight:600;letter-spacing:-.8px}.hero-art{position:relative;min-height:430px;display:grid;place-items:center;isolation:isolate}.art-orbit{position:absolute;border:1px solid #dfdfe64d;border-radius:50%;width:420px;height:420px;z-index:-2}.orbit-two{width:330px;height:330px;background:radial-gradient(ellipse,#dce7f380,transparent 70%);border-color:#e0e0e640}.paper-back{position:absolute;width:300px;height:345px;background:#e6e9ee;border-radius:13px;transform:rotate(8deg) translate(17px,-2px)}.paper-preview{width:312px;background:#fff;border-radius:12px;padding:24px 27px 17px;transform:rotate(-6deg);box-shadow:0 28px 55px -22px #25273c38,0 2px 5px #00000004;border:1px solid #fff;position:relative}.preview-top{display:flex;justify-content:space-between;align-items:center;font-size:7px;font-weight:600;letter-spacing:1px;color:#8d929b}.preview-logo{font-size:24px;font-family:Georgia,serif;color:#252b35}.preview-rule{height:1px;background:#e8eaef;margin:12px 0 24px}.preview-kicker{color:#7b91aa;font-size:7px;letter-spacing:1.5px;font-weight:600}.paper-preview h2{font-family:Georgia,'Times New 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12px 34px #2629430c;padding:16px 20px;display:flex;align-items:center;gap:11px;font-size:12px;font-weight:550;transform:rotate(2deg)}.floating-note div>span{display:block;font-size:9px;color:#9999a0;font-weight:400;margin-top:5px}.note-icon{width:29px;height:29px;border-radius:50%;background:#eaf5ef;display:grid;place-items:center;color:#4a9b70;font-size:14px}.selector{background:#fff;border:1px solid #ebebef;border-radius:22px;padding:30px 32px 0;box-shadow:0 5px 20px #25253a02;scroll-margin-top:25px}.selector-heading,.section-heading{display:flex;align-items:center;justify-content:space-between;gap:20px}h2{letter-spacing:-.8px}.selector-heading h2,.section-heading h2{font-size:24px;font-weight:600;margin:0}.section-caption{color:#a1a1a7;font-size:11px}.filters{display:grid;grid-template-columns:1fr 1fr 1fr 1.05fr;gap:16px;align-items:end;margin-top:29px;margin-bottom:27px}.filters label>span{display:block;color:#b1b1b7;font-size:10px;letter-spacing:1px;margin-bottom:10px}.filters b{color:#77777e;letter-spacing:0;font-size:11px;font-weight:500;margin-left:7px}.filters select{appearance:none;width:100%;height:48px;border:1px solid #e7e7ec;border-radius:10px;background:#fafafa url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='m2 2 4 4 4-4' fill='none' stroke='%2386868b' stroke-width='1.4'/%3E%3C/svg%3E") no-repeat right 16px center;padding:0 35px 0 16px;color:#34343a;font-size:13px;cursor:pointer}.filters select:hover{border-color:#b8b8c0}.primary-button{display:inline-flex;align-items:center;justify-content:center;gap:26px;height:48px;padding:0 24px;border:0;border-radius:10px;color:white;background:var(--blue);font-size:13px;font-weight:500;transition:background .2s,box-shadow .2s}.primary-button:hover:not(:disabled){background:#0077ed;box-shadow:0 4px 15px #0071e320}.primary-button span{font-size:18px}.selector-footer{display:flex;justify-content:space-between;align-items:center;border-top:1px solid #f0f0f3;padding:16px 0;font-size:10px;color:#9999a0;gap:14px}.selector-footer>span:first-child{display:flex;align-items:center;gap:7px}.small-ring{width:11px;height:11px;border:1px solid #b7b7be;border-radius:50%;position:relative}.small-ring:after{content:'';position:absolute;width:2px;height:2px;border-radius:50%;background:#b7b7be;top:3.5px;left:3.5px}.progress-section{padding:48px 0 35px}.section-heading{margin-bottom:24px}.section-heading .eyebrow{font-size:9px}.section-heading h2{font-size:23px}.text-button,.back-button{border:0;background:none;color:var(--muted);font-size:11px;padding:8px 0}.text-button span{margin-left:8px;font-size:16px}.text-button:hover,.back-button:hover{color:var(--blue)}.progress-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.progress-card{border-radius:17px;border:1px solid #e7e7ed;background:#ffffff85;padding:25px 27px;position:relative;overflow:hidden}.progress-card:after{content:'';position:absolute;width:50px;height:50px;border:1px solid #dedee580;border-radius:50%;right:25px;top:33px;box-shadow:0 0 0 8px #eeeeF450}.progress-card strong{display:block;font-size:36px;font-weight:550;letter-spacing:-1.5px;font-variant-numeric:tabular-nums;margin:0 0 8px}.progress-card span{font-size:11px;color:#88888f}.privacy-note{display:flex;align-items:center;justify-content:center;gap:6px;color:#a0a0a6;font-size:10px;margin:24px 0 0}.privacy-note svg{width:13px;height:13px}footer{max-width:1120px;border-top:1px solid #e1e1e7;margin:0 auto;padding:23px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:20px;color:#9b9ba2;font-size:10px}.footer-brand{font-size:13px;font-weight:600;color:#75757e}.footer-brand span{font-size:10px;font-weight:400;margin-left:8px;color:#9b9ba2}footer>span{font-size:8px;letter-spacing:1.5px}footer p{margin:0}.hidden{display:none!important}.reader{padding:24px 0 0}.reader-topline{display:flex;align-items:center;gap:20px;padding:0 2px 20px;color:#77777e;font-size:12px}.back-button{font-size:12px}.timer{margin-left:auto;font-size:14px;font-variant-numeric:tabular-nums;background:#e9edf3;padding:7px 13px;border-radius:8px;color:#4e6077}.reader-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:20px;align-items:start}.passage-card,.questions-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px;max-height:calc(100dvh - 180px);overflow:auto;scrollbar-width:thin;scrollbar-color:#d7d7de transparent}.card-label{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:17px;margin-bottom:24px}.card-label .eyebrow{margin:0}.card-label>span{font-size:10px;color:#aaaab0}.passage-content{font-family:Georgia,'Times New Roman',serif;font-size:18px;line-height:1.95;color:#3c3c43}.passage-content p{margin:0 0 1.4em}.questions-header{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-bottom:18px;border-bottom:1px solid var(--line)}.questions-header h2{margin:0;font-size:22px;font-weight:600}.questions-header>span{font-size:10px;color:#88888f;white-space:nowrap}.questions-header .eyebrow{font-size:8px}.question{padding:23px 0;border-bottom:1px solid var(--line)}.stem{font-size:14px;line-height:1.65;margin:0 0 15px;font-weight:550}.q-num{color:var(--blue);margin-right:8px}.option{display:flex;align-items:flex-start;gap:9px;padding:11px 12px;border:1px solid #ededf1;border-radius:9px;margin:8px 0;cursor:pointer;font-size:13px;line-height:1.6;color:#62626b;transition:background .15s,border-color .15s}.option:hover{background:#f7f8fa}.option input{accent-color:var(--blue);flex-shrink:0;margin:4px 0 0}.option:has(input:checked){border-color:#7eb8f3;background:#f0f7ff;color:#215d9c}.option.correct{background:#edf8f1;border-color:#84be9b;color:#237b4b}.option.wrong{background:#fff1ef;border-color:#e7a59b;color:#b44435}.option:has(input:disabled){cursor:default}.answer-note{font-size:12px;color:var(--success);margin:12px 0 0}.submit-button{width:100%;margin-top:24px}.result{margin:24px 0 35px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px 32px}.result h2{font-size:23px;font-weight:550;margin:0}.result strong{color:var(--blue);margin-left:8px}.result p{font-size:13px;line-height:1.8;color:#86868b}.result .primary-button{margin-top:8px}body.is-reading footer{margin-top:28px}body.is-reading nav a{color:#737379}
@media(min-width:1400px){.hero{min-height:590px}.hero h1{font-size:72px}}
@media(max-width:1000px){.stats{gap:14px}.stat+.stat{padding-left:14px}.stat:last-child{display:none}.floating-note{right:-4px}.hero-art{transform:scale(.9)}.hero{gap:0}.reader-grid{gap:14px}.passage-card,.questions-card{padding:23px}footer{margin:0 40px}}
@media(max-width:760px){.site-header{height:66px;padding:0 22px}.brand-subtitle,.brand-divider,.local-badge{display:none}nav{gap:20px;font-size:11px}main{padding:0 22px}.hero{min-height:auto;padding:45px 0 30px;grid-template-columns:1fr}.hero h1{font-size:54px;letter-spacing:-2px;margin:18px 0}.hero-copy{font-size:14px}.hero .eyebrow{font-size:10px}.hero-art{min-height:360px;transform:scale(.85);margin:-5px -10px -20px}.stats{margin-top:24px}.stat:last-child{display:flex}.hero-content{position:relative;z-index:1}.floating-note{right:0;bottom:0}.selector{padding:24px 20px 0;border-radius:18px}.selector-heading h2{font-size:21px}.section-caption{display:none}.filters{grid-template-columns:1fr 1fr;gap:18px 12px;margin-top:24px}.filters select,.primary-button{height:46px}.selector-footer{font-size:9px;flex-wrap:wrap;gap:8px}.selector-footer>span:last-child{display:none}.progress-section{padding-top:35px}.section-heading h2{font-size:21px}.progress-cards{gap:9px}.progress-card{padding:20px 14px;border-radius:13px}.progress-card strong{font-size:28px}.progress-card span{font-size:10px}.progress-card:after{display:none}.privacy-note{font-size:9px}footer{margin:0 22px;flex-wrap:wrap;gap:12px}footer>span{display:none}footer p{font-size:9px}.reader{padding-top:18px}.reader-topline{gap:10px;flex-wrap:wrap}.reader-topline>#passageMeta{font-size:10px}.reader-grid{grid-template-columns:1fr}.passage-card,.questions-card{max-height:none;padding:24px 20px}.passage-content{font-size:17px;line-height:1.9}.result{padding:24px 20px}.result h2{font-size:21px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}
/* Practice workspace and learning library */
.resume-banner{margin-top:24px;padding:23px 28px;border:1px solid #dbe8f8;border-radius:18px;background:linear-gradient(110deg,#edf5ff,#ffffff);display:flex;justify-content:space-between;align-items:center;gap:20px}.resume-banner .eyebrow{display:block;font-size:8px;margin-bottom:8px}.resume-banner strong{font-size:19px;font-weight:600}.resume-banner p{font-size:11px;color:#7f8998;margin:8px 0 0}.passage-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:24px}.passage-tile{text-align:left;border:1px solid #e8e8ee;background:#fff;border-radius:12px;padding:17px 16px;color:#777780;display:grid;gap:15px;transition:background .2s,border-color .2s}.passage-tile:hover{background:#f5f9ff;border-color:#afd0f7}.tile-top{display:flex;justify-content:space-between;align-items:center;gap:6px;font-size:17px;color:#373740;font-weight:550}.tile-top small{font-size:9px;font-weight:400;color:#9898a1;background:#f5f5f7;padding:4px 6px;border-radius:5px}.passage-tile>span:nth-child(2){font-size:10px}.tile-bottom{font-size:10px;color:var(--blue)}.in-progress{border-color:#b6d4f6;background:#f9fbff}.in-progress small{background:#e7f1fd;color:#4685c7}.library-tabs{display:flex;gap:24px;border-bottom:1px solid #e2e2e9;margin-top:35px}.library-tabs button{border:0;border-bottom:2px solid transparent;background:transparent;padding:14px 0;color:#898991;font-size:12px}.library-tabs button[aria-selected=true]{border-color:var(--blue);color:var(--ink)}.library-tabs button>span{font-size:9px;padding:2px 6px;background:#e7edf5;color:#6082a9;border-radius:5px;margin-left:3px}.library-content{min-height:140px}.library-caption{font-size:11px;line-height:1.8;color:#96969e;margin:19px 0}.empty-state{text-align:center;padding:29px 18px 20px;color:#a0a0aa;font-size:12px;line-height:1.8}.empty-state>span{font-size:24px;color:#b8c4d4}.empty-state p{margin-top:8px}.library-row{padding:20px 0;border-bottom:1px solid #e6e6ec;display:flex;justify-content:space-between;align-items:center;gap:22px}.library-row>div:first-child{min-width:0;flex:1}.library-row strong{font-size:14px;font-weight:550}.library-row p{font-size:12px;color:#82828c;line-height:1.75;white-space:pre-wrap;margin:7px 0}.library-row small{color:#9999a2;font-size:10px}.library-row blockquote{font-family:Georgia,serif;font-size:14px;line-height:1.75;color:#72727c;margin:12px 0;border-left:2px solid #d1dce9;padding-left:12px;overflow-wrap:anywhere}.row-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap}.secondary-button{border:1px solid #dedee6;background:#fff;color:#5c6570;padding:11px 15px;border-radius:9px;font-size:11px;white-space:nowrap}.secondary-button:hover{background:#f3f7fc;border-color:#b9cee6}.mastered strong:after{content:'已掌握';font:9px -apple-system,BlinkMacSystemFont,sans-serif;color:#43865e;background:#e7f2e9;padding:4px 7px;margin-left:10px;border-radius:4px}.reader-topline{position:sticky;top:0;z-index:5;background:#f5f5f7ed;backdrop-filter:blur(16px);padding:15px 2px}.reader-topline #pauseTimer{margin-left:auto}.timer{margin-left:0;min-width:64px;text-align:center}.timer.paused{color:#af8a48;background:#f3ecdf}.reader-toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:7px 0 20px}.reading-settings{display:flex;gap:20px}.reading-settings label{font-size:11px;color:#888890;display:flex;align-items:center;gap:8px}.reading-settings select{border:1px solid #dddde4;border-radius:7px;background:transparent;padding:6px;color:#666671;font-size:11px}.reader-toolbar #saveStatus{font-size:10px;color:#91919b}.mobile-tabs{display:none}.reader-grid{grid-template-columns:minmax(0,1.45fr) minmax(0,1fr)}.passage-card,.questions-card{max-height:calc(100dvh - 225px);min-height:300px}.annotation-tools{position:sticky;top:-30px;z-index:2;background:#fffffff2;backdrop-filter:blur(10px);display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin:-6px 0 22px;padding:10px 0;border-bottom:1px solid #f0f0f4}.annotation-tools>span{font-size:9px;color:#9999a0;margin-right:auto}.annotation-tools button{border:1px solid #e9e9ee;background:#f9f9fb;color:#6a7584;border-radius:6px;padding:6px 8px;font-size:10px}.annotation-tools button:hover:not(:disabled){background:#eaf3ff;border-color:#a9cef6}.paragraph{position:relative;padding-left:23px;border-radius:7px;transition:background .3s}.paragraph-number{position:absolute;left:-3px;top:7px;font:9px -apple-system,BlinkMacSystemFont,sans-serif;color:#b5b5bf;user-select:none}.paragraph.located{background:#edf4ff;box-shadow:0 0 0 8px #edf4ff}.passage-content mark{color:inherit;background:none}.passage-content .reader-highlight{background:#ffebaf;border-radius:2px}.passage-content .reader-underline{text-decoration:underline;text-decoration-color:#6d9cce;text-decoration-thickness:2px;text-underline-offset:4px}.question-nav{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}.question-nav button{width:36px;height:34px;border:1px solid #e1e3e9;border-radius:8px;background:#fff;color:#8b8b95;font-size:11px;position:relative}.question-nav .answered{background:#eaf3ff;border-color:#b3d0f5;color:#3276bb}.question-nav .flagged:after{content:'';position:absolute;width:5px;height:5px;border-radius:50%;background:#dfaa52;top:3px;right:3px}.question-nav .nav-correct{background:#edf8f1;border-color:#abd0b8;color:#40875d}.question-nav .nav-wrong{background:#fff1ef;border-color:#e6b8af;color:#af6557}.question-legend{font-size:9px;color:#aaaab2;margin:9px 0 0}.question{scroll-margin-top:80px}.question-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.question-type{color:#b2b2bc;font-size:8px;letter-spacing:1px}.flag-button{padding:4px;border:0;background:none;font-size:10px;color:#9696a0}.flag-button.flagged{color:#b88934}.review-detail{font-size:12px;line-height:1.8;margin-top:18px}.muted{font-size:11px;color:#9999a2}.review-detail blockquote{border-left:2px solid #adcbed;padding-left:12px;margin:13px 0;color:#67788c}.review-detail details,.reading-extras details{border:1px solid #e7e9ee;border-radius:9px;padding:12px;margin-top:12px;white-space:pre-wrap}.review-detail summary,.reading-extras summary{cursor:pointer;font-size:12px;color:#6e7c8b;font-weight:550}.review-detail details p{color:#777781;font-size:12px}.evidence-button{border:0;background:#eef5ff;color:#4c7cae;border-radius:7px;padding:9px 11px;font-size:11px;text-align:left}.reason-label{display:block;color:#9999a3;font-size:10px;margin-top:16px}.reason-label select{display:block;width:100%;padding:9px 10px;margin-top:6px;border:1px solid #e4e5eb;border-radius:7px;background:#fafafb;color:#70707a;font-size:11px}.review-note{width:100%;resize:vertical;border:1px solid #e4e5eb;border-radius:7px;padding:10px;color:#5c626d;background:#fafafb;font:12px/1.7 inherit;margin-top:9px}.reading-extras{border-top:1px solid #e6e6ed;padding-top:12px;font-size:13px;line-height:1.9;color:#888892}.reading-extras p{white-space:pre-wrap}.reading-extras blockquote{font-family:Georgia,serif;margin:15px 0}.result-heading{display:flex;justify-content:space-between;align-items:center;gap:20px}.result-heading h2{font-size:21px}.result-heading .eyebrow{font-size:9px}.result-heading .row-actions{flex-shrink:0}.result-heading .primary-button{margin:0}.result-heading p{margin-bottom:0}.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);z-index:50;padding:13px 20px;background:#282d35ed;backdrop-filter:blur(16px);border-radius:12px;color:#fff;font-size:12px;line-height:1.6;box-shadow:0 8px 30px #0002;max-width:90vw;width:max-content}dialog{border:1px solid #e5e5eb;border-radius:20px;padding:28px;width:min(480px,calc(100vw - 32px));color:var(--ink);box-shadow:0 25px 100px #0002}dialog::backdrop{background:#25293540;backdrop-filter:blur(5px)}dialog h2{font-size:23px;margin:0 0 18px}#noteQuote{font-family:Georgia,serif;color:#7c8591;font-size:14px;line-height:1.7;max-height:130px;overflow:auto}dialog label{font-size:11px;color:#9999a2}dialog textarea{display:block;width:100%;resize:vertical;margin:9px 0 20px;border:1px solid #dddfe6;border-radius:10px;padding:13px;font:14px/1.8 inherit;color:#545964}.dialog-actions{display:flex;justify-content:flex-end;gap:12px}.dialog-actions .primary-button{height:40px}textarea:focus-visible{outline:2px solid #0071e366;outline-offset:2px}
@media(max-width:1000px){.annotation-tools{top:-23px}.result-heading{align-items:flex-start;flex-direction:column}.reader-grid{grid-template-columns:minmax(0,1.2fr) minmax(0,1fr)}.tile-top{font-size:15px}.passage-tile{padding:14px 12px}}
@media(max-width:760px){body.is-reading .site-header{display:none}body.is-reading main{padding:0 14px}.reader{padding-top:0}.reader-topline{top:0;padding:13px 0;gap:9px}.reader-topline #pauseTimer{font-size:10px}.reader-toolbar{gap:10px;flex-wrap:wrap;margin:5px 0 12px;position:sticky;top:60px;z-index:4;background:var(--paper);padding:8px 0}.reading-settings{gap:13px}.reader-toolbar #saveStatus{font-size:9px}.mobile-tabs{display:flex;background:#e8e8ed;padding:3px;border-radius:9px;width:100%;gap:3px}.mobile-tabs button{flex:1;border:0;background:transparent;color:#83838d;padding:8px;border-radius:7px;font-size:12px}.mobile-tabs button[aria-selected=true]{background:#fff;color:#3d4754;box-shadow:0 1px 5px #0000000c}.reader-grid{display:block}.reader-grid[data-panel=passage] .questions-card,.reader-grid[data-panel=questions] .passage-card{display:none}.passage-card,.questions-card{max-height:calc(100dvh - 185px);min-height:0;padding:22px 18px;overscroll-behavior:contain;border-radius:14px}.annotation-tools{top:-22px}.annotation-tools>span{width:100%;margin-bottom:3px}.paragraph{padding-left:20px}.paragraph-number{left:-2px}.resume-banner{padding:20px;align-items:flex-start;flex-direction:column}.resume-banner strong{font-size:17px}.resume-banner .primary-button{height:40px;font-size:11px}.passage-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.passage-tile{padding:15px 12px}.library-tabs{gap:19px;margin-top:24px}.library-tabs button{font-size:11px}.library-row{gap:14px;align-items:flex-start;flex-wrap:wrap}.library-row strong{font-size:12px}.library-row>.row-actions{width:100%;justify-content:flex-end}.library-row>.secondary-button{padding:9px 10px;font-size:10px}.library-row blockquote{font-size:13px}.result-heading h2{font-size:19px;line-height:1.6}.result-heading p{font-size:11px}.result-heading .row-actions{width:100%;justify-content:space-between}.result-heading .primary-button{height:42px}.result{margin-top:16px}.question{scroll-margin-top:0}}
.compact-submit{background:var(--blue);border:0;color:#fff;border-radius:7px;padding:8px 12px;font-size:11px}.compact-submit:hover{background:#0077ed}.selector-footer .demo-link{padding:0;color:#7593b7;font-size:10px}.selector-footer .demo-link:hover{color:var(--blue)}
@media(max-width:760px){.compact-submit{font-size:10px;padding:7px 10px}.reader-topline{gap:7px}.reader-topline .back-button{font-size:11px}.timer{min-width:55px;padding:7px 8px;font-size:12px}.selector-footer .demo-link{font-size:9px}}
.option.correct:has(input:checked){background:#edf8f1;border-color:#84be9b;color:#237b4b}.option.wrong:has(input:checked){background:#fff1ef;border-color:#e7a59b;color:#b44435}#pauseTimer.hidden+.timer{margin-left:auto}
.practice-mode{display:flex;align-items:center;gap:10px;color:#86868b;font-size:11px;margin-top:22px}.practice-mode select{padding:7px 10px;border:1px solid #e4e5eb;border-radius:8px;background:#fafafb;color:#687485;font-size:11px}.ai-explain-button{border:1px solid #cddff7;border-radius:8px;background:#edf5ff;padding:10px 14px;color:#2673bf;font-size:12px;margin-bottom:9px}.ai-dialog{width:min(620px,calc(100vw - 32px));max-height:88dvh;padding:26px 30px;overscroll-behavior:contain}.ai-header{display:flex;align-items:center;justify-content:space-between;gap:20px}.ai-header h2{margin:0;font-size:24px}.ai-header .eyebrow{font-size:9px}.ai-disclaimer{color:#969aa2;font-size:11px}.ai-access{border-bottom:1px solid #ededf2;padding:10px 0 17px;margin-bottom:20px;font-size:10px;color:#a0a3ab}.ai-access summary{cursor:pointer}.ai-access label{display:block;margin-top:12px}.ai-access input{border:1px solid #dddfe6;border-radius:6px;padding:8px;max-width:100%}.ai-access button{margin-left:8px}#aiContent,#aiConversation{font-size:14px;line-height:1.9;color:#596574;overflow-wrap:anywhere}#aiContent h3,#aiConversation h3{color:#303c4c;font-size:14px;font-weight:600;margin:20px 0 8px}#aiContent p,#aiConversation p{white-space:pre-wrap;margin:9px 0}.ai-source{font-family:Georgia,serif;font-size:15px;line-height:1.8;padding:12px 15px;background:#f6f8fb;border-left:2px solid #cbdcf0;border-radius:0 8px 8px 0;margin:16px 0;color:#64768d}.ai-loading{display:flex;align-items:center;gap:12px;padding:22px 0;color:#8995a6;font-size:12px}.ai-loading>span{width:15px;height:15px;border:2px solid #e4edf9;border-top-color:#4c94e7;border-radius:50%;animation:ai-spin 1s linear infinite}@keyframes ai-spin{to{transform:rotate(360deg)}}.ai-error,.ai-uncertainty{background:#fff7e9;color:#9b7747;border-radius:8px;padding:13px;font-size:12px}.ai-paragraph{border-bottom:1px solid #e6eaf0;padding:12px 0}.ai-paragraph summary{font-size:12px;color:#72849a;cursor:pointer}.ai-progress{font-size:11px;color:#8c99aa}.ai-quick{display:flex;gap:8px;margin-top:24px}.ai-quick button{border:1px solid #dce6f3;background:#f6faff;border-radius:20px;padding:7px 12px;font-size:11px;color:#6684a6}#aiFollowupForm{margin-top:18px;border-top:1px solid #e7eaf0;padding-top:18px}#aiFollowupForm textarea{margin-bottom:12px;font-size:13px}.ai-turn{border-top:1px solid #e7eaf0;margin-top:20px;padding-top:8px}
@media(max-width:760px){.ai-dialog{position:fixed;inset:auto 0 0;margin:0;width:100%;max-width:none;max-height:88dvh;border-radius:22px 22px 0 0;padding:24px 20px}.ai-header h2{font-size:21px}.annotation-tools{gap:5px}.annotation-tools button{padding:6px;font-size:9px}.practice-mode{flex-wrap:wrap}}@media(prefers-reduced-motion:reduce){.ai-loading>span{animation:none}}