:root{--bg:#f6f7f9;--paper:#fff;--ink:#202c39;--muted:#71808f;--line:#e3e8ec;--green:#176a55;--nav:#123b36;--mint:#daf0e6;--orange:#e9a344;--danger:#b64040;--shadow:0 8px 28px #233a4810}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input,select{font:inherit}button,a,input,select,summary{touch-action:manipulation}button,a{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}a{color:var(--green);text-decoration:none}a:hover{text-decoration:underline}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid 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button{display:flex;align-items:center;gap:12px;text-align:left;border-radius:9px;padding:12px 14px;color:#6f7c87;font-size:13px;font-weight:550;min-height:45px}.nav button:hover{background:#f4f7f6}.nav button.active{background:#e9f2ee;color:var(--green);font-weight:650}.nav svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.65}.badge{margin-left:auto;border-radius:5px;padding:0 6px;background:#dce8e2;font-size:10px}.sidebar-foot{margin-top:auto;border-top:1px solid var(--line);padding:20px 12px 0;font-size:11px;color:var(--muted)}.local-dot{width:6px;height:6px;display:inline-block;border-radius:50%;background:#3d9a72;margin-right:6px}.topbar{height:76px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 44px;background:#ffffffa8;color:#77838e;font-size:12px}.topbar 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#ffffff22;border-radius:50%;position:relative;display:grid;place-items:center}.orbit:before{content:"";position:absolute;inset:18px;border:1px dashed #ffffff30;border-radius:50%}.orbit:after{content:"";width:10px;height:10px;background:#e6b05b;border:6px solid #123b36;border-radius:50%;position:absolute;left:18px;top:12px;box-sizing:content-box}.orbit strong{font-size:49px;font-weight:450;letter-spacing:-3px;line-height:1}.orbit span{display:block;text-align:center;color:#a9c6b8;font-size:11px;letter-spacing:.3px;margin-top:8px}.math-symbol{position:absolute;color:#7ca596;font:italic 24px Georgia;opacity:.7}.math-symbol.one{left:7%;top:10px;transform:rotate(-12deg)}.math-symbol.two{right:4%;bottom:14px;transform:rotate(12deg)}.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:32px}.stat{border:1px solid var(--line);border-radius:11px;background:white;padding:19px 21px}.stat .label{color:var(--muted);font-size:11px;display:flex;align-items:center;justify-content:space-between;gap:10px}.stat strong{font-size:30px;font-weight:600;letter-spacing:-1px;display:block;margin:6px 0 0}.stat small{font-size:10px}.section-head{display:flex;align-items:center;justify-content:space-between;margin:27px 0 17px}.section-head h2{font-size:19px;margin:0}.text-link{color:var(--green);font-size:12px;font-weight:600;padding:5px}.subject-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.subject-card{padding:23px;border:1px solid var(--line);background:white;border-radius:11px;display:flex;flex-direction:column;transition:box-shadow .2s,transform .2s}.subject-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.subject-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}.subject-icon{width:43px;height:43px;border-radius:11px;display:grid;place-items:center;background:#eaf1fb;color:#5782b1;font:27px 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.letter{background:var(--green);color:white;border-color:var(--green)}.option.correct{border-color:#68a283;background:#f0f8f2}.option.incorrect{border-color:#d58a8a;background:#fff3f2}.option:disabled{opacity:1;cursor:default}.answer-label{margin-left:auto;align-self:center;font-size:10px;white-space:nowrap;font-weight:600}.question-actions{display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--line);margin-top:26px;padding-top:21px;flex-wrap:wrap}.explanation{border-radius:10px;background:#f0f7f3;border:1px solid #d6e7dc;padding:22px;margin-top:24px;font-size:14px;overflow-wrap:anywhere;white-space:pre-wrap}.explanation h3{white-space:normal;font-size:15px}.explanation.wrong{background:#fbf6f1;border-color:#ecdfcf}.explanation .source{font-size:11px;border-top:1px solid #d5e1d9;padding-top:13px;margin-top:16px;color:#63786b;white-space:normal;overflow-wrap:anywhere}.source details{margin:8px 0}.source summary{cursor:pointer}.source pre{white-space:pre-wrap}.timer-box{border-radius:11px;padding:20px;background:#edf5ef;border:1px solid #d9e8de;text-align:center;margin-bottom:15px}.timer-box .timer-label{font-size:10px;letter-spacing:1px;text-transform:uppercase;color:#71927d}.timer-value{font-variant-numeric:tabular-nums;font-size:35px;letter-spacing:-1px;line-height:1.4;color:#367a52}.timer-text{font-size:10px;line-height:1.5;color:#5d8368}.timer-box.warn{background:#fff7e6;border-color:#eddfbf}.timer-box.warn .timer-value,.timer-box.warn .timer-text{color:#ac791f}.timer-box.slow{background:#fff0ee;border-color:#edcfca}.timer-box.slow .timer-value,.timer-box.slow .timer-text{color:#b0524c}.timer-box .btn{font-size:11px;margin-top:14px;width:100%;min-height:35px;padding:7px}.navigator{padding:17px;border:1px solid var(--line);border-radius:10px;background:white}.navigator h3{font-size:11px;font-weight:600;margin-bottom:13px}.number-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:5px}.number-btn{min-height:31px;border-radius:5px;border:1px solid #e3e8eb;background:#f8faf9;font-size:10px}.number-btn.answered{background:#dcece3;border-color:#c8dfd1;color:#347452}.number-btn.skipped{border-style:dashed;background:#fff8e9;color:#a8813b}.number-btn.current{border:2px solid var(--green);font-weight:700}.number-btn.wrong{background:#f6dfdd;color:#a4473c}.legend{font-size:9px;color:#7f8c96;margin-top:13px;line-height:1.9}.session-side small{display:block;font-size:10px;margin-top:15px;line-height:1.6}.session-side .finish{width:100%;margin-top:15px;font-size:11px}.score-hero{padding:32px;background:var(--nav);border-radius:12px;color:white;display:flex;gap:30px;align-items:center;margin-bottom:23px}.score-hero strong{font-size:48px;letter-spacing:-2px}.score-hero h2{margin-bottom:7px}.score-hero p{margin:0;color:#b5cfc1;font-size:13px}.review-nav{display:flex;justify-content:space-between;gap:10px;margin:20px 0}.mobile-brand{display:none}.loading{text-align:center;padding:100px 20px}.loading b{font-size:24px;color:var(--green)}#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#233b32;color:white;border-radius:8px;padding:12px 20px;font-size:13px;box-shadow:var(--shadow);z-index:100;display:none;max-width:90vw}dialog{border:0;padding:40px 15px 15px;border-radius:13px;max-width:95vw;max-height:95vh;background:white}dialog::backdrop{background:#112922aa}dialog img{max-width:100%;height:auto}dialog .close{position:absolute;right:12px;top:4px;font-size:27px;min-width:40px;min-height:35px}.storage-error{position:sticky;top:0;z-index:40;background:#a43f36;color:white;padding:12px;text-align:center;font-size:13px}.lease-notice{background:#fff1d6;padding:12px 20px;font-size:12px;display:flex;justify-content:center;gap:14px;align-items:center}.katex-display{overflow-x:auto;overflow-y:hidden;padding:5px 0}.question-card ul,.question-card ol{padding-left:22px}.source-link{font-size:12px}.quality-counts{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:20px}.pagination{display:flex;gap:12px;align-items:center;justify-content:center;margin-top:22px;font-size:12px}.history-date{font-size:11px;color:var(--muted)}.history-title{font-size:14px;margin-bottom:4px}.full-width{width:100%}.chevron{font-size:20px;font-weight:400}.mobile-toggle{display:none}.syllabus-note{font-size:11px;color:var(--muted);margin:18px 0}.form-check{display:flex;gap:9px;align-items:center;font-size:12px;cursor:pointer}.form-check input{accent-color:var(--green)}
@media(min-width:1500px){.content{padding-top:45px}.hero{min-height:230px}.subject-card{min-height:265px}}
@media(max-width:1100px){.shell{grid-template-columns:205px minmax(0,1fr)}.sidebar{padding:30px 13px}.brand{font-size:18px}.content{padding:28px 26px}.topbar{padding:0 26px}.session-layout{grid-template-columns:minmax(0,1fr) 185px}.question-card{padding:23px}.subject-card{padding:18px}.stats{gap:10px}.stat{padding:15px}.stat strong{font-size:26px}.hero-art{transform:scale(.85)}}
@media(max-width:800px){.shell{grid-template-columns:1fr}.sidebar{position:fixed;left:0;top:0;width:235px;transform:translateX(-100%);z-index:60;box-shadow:10px 0 40px #123b3630;transition:transform .2s}.sidebar.open{transform:translateX(0)}.mobile-toggle{display:block;font-size:20px;margin-right:12px;min-width:35px;min-height:40px}.topbar{height:62px;padding:0 20px;position:sticky;top:0;z-index:20;background:#fff}.topbar .crumb-top{display:none}.mobile-brand{display:block;font-size:16px;font-weight:750;color:var(--nav);margin-right:auto}.topbar .right{font-size:10px}.content{padding:25px 20px 50px}h1{font-size:30px}.hero{padding:25px}.subject-grid{gap:12px}.subject-card{padding:17px}.subject-card h3{font-size:17px}.subject-card p{font-size:10px}.page-head{align-items:flex-start}.session-layout{grid-template-columns:1fr}.session-side{display:grid;grid-template-columns:1fr 1.5fr;gap:12px}.session-side .timer-box{margin:0}.session-side .navigator{grid-row:span 2}.session-side small{display:none}.session-side .finish{margin:0}.session-layout .session-side{grid-row:1}.number-grid{grid-template-columns:repeat(8,1fr)}.session-side .navigator{max-height:200px;overflow:auto}.question-card{padding:23px}.timer-value{font-size:29px}.timer-box{padding:12px}.timer-box .btn{margin-top:8px}.timer-text{font-size:10px}.legend{display:none}}
@media(max-width:560px){.content{padding:23px 16px 40px}.topbar{padding:0 12px}.topbar .local-save{display:none}.page-head{display:block}.page-head .btn{margin-top:15px}h1{font-size:29px}.hero{grid-template-columns:1fr;padding:24px}.hero h2{font-size:24px;max-width:280px}.hero p{max-width:270px}.hero-art{position:absolute;right:-35px;bottom:-45px;opacity:.25;transform:scale(.9);pointer-events:none}.hero .btn{position:relative}.stats{grid-template-columns:1fr 1fr;gap:10px;margin-bottom:25px}.stat{padding:15px 17px}.stat strong{font-size:28px}.subject-grid{grid-template-columns:1fr}.subject-card{padding:20px;display:block}.subject-top{float:left;margin:0 15px 15px 0}.subject-top .pill{display:none}.subject-card p{margin-bottom:18px;font-size:12px}.subject-card h3{font-size:19px}.subject-icon{height:46px;width:46px}.bottom-grid{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.toolbar .input{width:100%;flex-basis:100%}.toolbar select{flex:1}.subtopic{padding:14px;gap:9px}.subtopic button{padding:7px 10px;font-size:11px;min-width:65px}.topic summary{padding:16px;font-size:14px}.topic summary small{font-size:10px}.tabs{gap:6px}.tab{padding:8px 13px;font-size:12px}.selection-bar{padding:12px;font-size:12px;bottom:10px}.selection-bar .btn{padding:8px 11px}.panel{padding:20px}.result-row{padding:15px;gap:10px}.question-card{padding:19px 16px}.question-stem{font-size:16px}.option{padding:12px 10px;font-size:14px;gap:9px}.option .answer-label{font-size:9px}.session-header{align-items:flex-start}.session-header .btn{font-size:11px;padding:8px 10px}.session-side{grid-template-columns:125px minmax(0,1fr);gap:10px}.number-grid{grid-template-columns:repeat(5,1fr)}.navigator{padding:12px}.number-btn{min-height:28px}.session-side .finish{font-size:10px;padding:8px}.timer-box{padding:12px 8px}.timer-box .timer-label{font-size:8px}.timer-value{font-size:27px}.score-hero{display:block;padding:24px}.score-hero h2{font-size:20px;margin-top:12px}.explanation{padding:17px;font-size:13px}.question-actions .btn{font-size:12px;padding:9px 12px}.section-head h2{font-size:18px}.quality-item{padding:14px}.quality-item summary{font-size:12px}.answer-label{display:none}.notice{padding:13px;font-size:12px}}
/* Free / Plus product preview */
.plan-chip,.plus-pill,.preview-tag{display:inline-flex;align-items:center;gap:6px;border-radius:99px;font-size:10px;font-weight:650;letter-spacing:.02em;white-space:nowrap}.plan-chip{padding:7px 11px;background:#edf3ef;color:#376351;border:1px solid #d6e4da;cursor:pointer}.plan-chip.is-plus,.plus-pill{background:#173f35;color:#f6d28c;border-color:#173f35}.plus-pill{padding:5px 10px;letter-spacing:.12em}.preview-tag{padding:8px 13px;background:#fff7e6;color:#88652e;border:1px solid #eddfc2}.access-summary{display:flex;justify-content:space-between;align-items:center;gap:15px;padding:15px 18px;border:1px solid #dce6df;border-radius:10px;background:#f4f8f4;margin:0 0 23px}.access-summary>div{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.access-summary strong{font-size:12px}.access-summary>div>span:last-child{color:#6d7e73;font-size:11px}.pricing-head{align-items:center}.pricing-head h1{font-size:38px}.pricing-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-bottom:25px}.price-card{background:white;border:1px solid #dfe6e1;border-radius:16px;padding:30px;display:flex;flex-direction:column;position:relative}.price-card.featured{background:#f4f8f3;border:2px solid #315d47;padding:29px}.price-card h2{font-size:23px;margin:9px 0 18px}.price-card p{font-size:13px;color:#6b7b71}.price-card-top{display:flex;justify-content:space-between;align-items:center}.price{font-size:51px;color:#193c30;font-weight:700;letter-spacing:-2px;line-height:1.2}.price span{font-size:14px;font-weight:400;letter-spacing:0;color:#748379}.feature-list{padding:0;margin:19px 0 25px;list-style:none;flex:1}.feature-list li{position:relative;padding:10px 0 10px 25px;font-size:13px;border-bottom:1px solid #e5ebe5;line-height:1.5}.feature-list li:before{content:'✓';position:absolute;left:1px;color:#377b53;font-weight:700}.preview-link{font-size:12px;text-align:center;display:block;margin:10px auto 0}.preview-explanation{margin-top:20px;font-size:13px;color:#6a7b70}.preview-explanation h3{color:#293e32}.access-table th{white-space:nowrap}.upgrade-panel{display:flex;align-items:center;gap:25px;justify-content:space-between;padding:28px;border-radius:13px;background:#193e33;color:#fff;margin:22px 0}.upgrade-panel h2{font-size:22px;margin:8px 0}.upgrade-panel p{color:#c3d6ca;font-size:13px;margin:0;max-width:590px}.upgrade-panel .eyebrow{color:#c7d5bc}.upgrade-panel .btn{flex-shrink:0}.insight-preview-grid,.weak-topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-bottom:23px}.insight-preview-grid h3{font-size:17px;margin-top:16px}.insight-preview-grid p,.weak-topic-grid p{font-size:12px;color:#758278}.weak-topic-grid h3{font-size:15px;margin:10px 0;line-height:1.5}.weak-topic-grid .btn{font-size:11px;white-space:normal}.analytics-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:20px;margin-bottom:27px}.analytics-summary{grid-template-columns:repeat(4,minmax(0,1fr))}.analytics-summary .stat strong{font-size:30px}.analytics-filters label{display:flex;gap:6px;flex-direction:column;font-size:11px;color:#6b7b70;flex:1}.analytics-filters select{width:100%;margin:0}.activity-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:6px}.activity-day{border-radius:6px;display:flex;flex-direction:column;gap:3px;align-items:center;justify-content:center;min-height:47px;background:#f0f3f0;color:#849086}.activity-day span{font-size:9px}.activity-day strong{font-size:12px}.activity-day.intensity-1{background:#dae9d9;color:#466d47}.activity-day.intensity-2{background:#9bc39b;color:#254f2a}.activity-day.intensity-3{background:#356a4b;color:#fff}.pace-insight{display:flex;justify-content:space-between;font-size:12px;padding:12px 0;border-bottom:1px solid #e5ebe6}.pace-insight strong{font-size:16px;font-weight:600}.breakdown-table td{vertical-align:middle;font-size:12px}.breakdown-table td:first-child{min-width:210px}.breakdown-table small{font-size:10px;color:#8a938b}.accuracy-cell{display:flex;flex-direction:column;gap:6px;min-width:70px}.mini-track{display:block;height:4px;border-radius:4px;background:#edf1eb}.mini-track i{display:block;height:100%;border-radius:4px;background:#699875}.locked-preview{color:#809086;font-size:12px;letter-spacing:.02em}.locked-question{text-align:center;padding:55px 30px}.locked-question h2{margin-top:16px}.locked-question p{max-width:530px;margin:15px auto;color:#718176;font-size:14px}.locked-question .toolbar{justify-content:center;margin-top:23px}.locked-question small{display:block;color:#88978d;font-size:11px}.lock-symbol{font-size:47px;color:#72967c;margin-bottom:12px}.checkout-preview{max-width:460px;padding:40px 30px 25px}.checkout-preview h2{font-size:26px;margin:14px 0}.checkout-preview p{font-size:13px;color:#758378;line-height:1.7}.checkout-preview .notice{font-size:12px}.checkout-preview .text-link{display:block;margin:8px auto 0;font-size:12px}.corner-banner{position:fixed;bottom:18px;right:18px;width:207px;padding:13px 15px;border:1px solid #dce3dc;border-radius:10px;background:#fbfcfa;box-shadow:0 4px 18px #233c2410;z-index:15}.corner-banner .ad-label{display:block;font-size:8px;color:#98a097;letter-spacing:.12em;margin-bottom:8px}.corner-banner strong{font-size:13px;color:#5e7561;font-weight:600}.corner-banner p{font-size:10px;line-height:1.5;color:#889286;margin:7px 0}.corner-banner .text-link{font-size:10px;padding:0}.content.with-corner-banner{padding-bottom:170px}.topbar .right{gap:11px}
@media(max-width:1100px){.insight-preview-grid,.weak-topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.analytics-grid{grid-template-columns:1fr}.upgrade-panel{align-items:flex-start;flex-direction:column}.access-summary{align-items:flex-start}.access-summary>div{gap:8px}}
@media(max-width:700px){.pricing-grid{grid-template-columns:1fr}.price-card,.price-card.featured{padding:24px}.pricing-head h1{font-size:31px}.pricing-head .preview-tag{margin-top:13px}.analytics-summary{grid-template-columns:repeat(2,minmax(0,1fr))}.analytics-summary .stat strong{font-size:27px}.analytics-grid{grid-template-columns:1fr}.insight-preview-grid,.weak-topic-grid{grid-template-columns:1fr}.access-summary{flex-direction:column;gap:8px;padding:13px}.access-summary .text-link{padding:5px 0}.access-summary>div>span:last-child{flex-basis:100%}.corner-banner{position:static;width:auto;margin:28px 0 0;box-shadow:none;padding:14px}.content.with-corner-banner{padding-bottom:40px}.corner-banner p br{display:none}.corner-banner .ad-label{font-size:8px}.corner-banner p{font-size:11px}.analytics-filters{gap:8px}.analytics-filters label{flex-basis:100%}.activity-day{min-height:44px}.checkout-preview{width:calc(100vw - 28px);padding:40px 21px 22px}.upgrade-panel{padding:22px}.upgrade-panel .btn{width:100%;font-size:12px}.price{font-size:45px}.topbar .right{gap:7px}.topbar .plan-chip{font-size:9px;padding:6px 8px}.locked-question{padding:30px 18px}.locked-question .toolbar{flex-direction:column}.locked-question .toolbar .btn{width:100%}}
/* Reserve the ad's own space: never overlay a question, table or button. */
.sidebar{overflow-y:auto}.sidebar .brand,.sidebar .nav,.sidebar .sidebar-foot{flex-shrink:0}
.corner-banner{position:relative;bottom:auto;right:auto;margin:28px 0 0 auto;z-index:auto;box-shadow:none}
.content.with-corner-banner{padding-bottom:60px}
@media(max-width:700px){.corner-banner{margin:28px 0 0;width:auto}.content.with-corner-banner{padding-bottom:40px}}
.paper-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:22px 0 30px}.paper-card{display:flex;flex-direction:column;padding:23px;border:1px solid #dde7e0;border-radius:13px;background:white;min-width:0}.paper-card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.paper-number{display:grid;place-items:center;width:39px;height:39px;border-radius:10px;background:#eaf3ec;color:#2f7150;font-weight:700}.paper-access{font-size:10px;letter-spacing:.1em;font-weight:700;color:#47765b}.paper-card h3{font-size:15px;line-height:1.4;overflow-wrap:anywhere;margin:0 0 9px;min-height:42px}.paper-card p,.paper-card small{font-size:11px;color:#758578}.paper-coverage{display:flex;flex-direction:column;gap:4px;font-size:11px;border-top:1px solid #edf1ed;padding-top:13px;margin-bottom:18px;color:#89918a;flex:1}.paper-coverage strong{color:#436c51}.paper-card button{margin-top:12px}.number-btn.unavailable{background:#ecefed;color:#7f8980;border-style:dotted}.review-badge{font-size:10px;padding:5px 10px;border-radius:20px;background:#fff3db;color:#876026;font-weight:650}.unavailable-card{padding:30px}.unavailable-card h2{margin-top:24px}.unavailable-card p{font-size:13px;color:#65766b;line-height:1.7}.unavailable-card .question-actions{margin-top:24px}@media(max-width:1050px){.paper-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:560px){.paper-grid{grid-template-columns:1fr}.paper-card h3{min-height:0}}
.account-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:20px;align-items:stretch}.account-intro{background:linear-gradient(140deg,#123b36,#1e6d58);color:#fff;padding:32px;min-height:310px}.account-intro h2{font-size:28px;letter-spacing:-.7px;margin:18px 0 12px}.account-intro p{color:#c9e0d5;max-width:410px;font-size:14px}.account-badge{font-size:10px;letter-spacing:.14em;font-weight:700;color:#cce5d3}.account-metrics{display:flex;gap:38px;margin:28px 0}.account-metrics div{display:flex;flex-direction:column}.account-metrics strong{font-size:29px;line-height:1.1}.account-metrics span{font-size:11px;color:#b8d5c6;margin-top:5px}.account-signin{padding:32px}.account-signin h2{margin:13px 0 8px}.account-signin>p,.account-lower p{color:#71808f;font-size:13px}.account-provider{width:100%;height:48px;display:flex;align-items:center;justify-content:center;gap:12px;border:1px solid #dce6df;border-radius:9px;font-weight:600;background:#fff;margin:10px 0}.account-provider:disabled{opacity:.65}.google-mark{color:#4285f4;font-size:18px;font-weight:800}.mail-mark{font-size:19px;color:#536f60}.account-unavailable{display:flex;flex-direction:column;gap:3px;background:#f3f7f4;border-radius:9px;padding:14px;margin-top:20px;color:#728276;font-size:12px}.account-unavailable strong{color:#365749}.account-lower{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:20px}.account-plan{display:flex;justify-content:space-between;align-items:flex-start;gap:15px;margin-top:12px}.account-plan h3{margin-bottom:4px}.account-plan p{margin:0}.account-avatar{border:0}.account-avatar:hover{filter:brightness(.94)}@media(max-width:700px){.account-grid,.account-lower{grid-template-columns:1fr}.account-intro,.account-signin{padding:24px}.account-intro{min-height:0}.account-intro h2{font-size:25px}}

.account-avatar{width:auto;min-width:92px;border-radius:20px;padding:8px 12px;white-space:nowrap}.account-error{padding:12px;background:#fff1ef;border:1px solid #d89386;border-radius:10px;color:#8b3022;overflow-wrap:anywhere}

.logout-button{display:block;width:100%;padding:11px 14px;margin-bottom:18px;border:1px solid #d8dfdb;border-radius:10px;background:#fff;color:#9b3838;text-align:left;cursor:pointer}.profile-photo-row{display:flex;align-items:center;gap:18px;margin:10px 0 24px}.profile-photo{width:88px;height:88px;border-radius:50%;object-fit:cover}.avatar-placeholder{display:inline-flex;align-items:center;justify-content:center;background:#e4ece6;color:#123b36;font-size:28px}.profile-photo-small{width:25px;height:25px;border-radius:50%;object-fit:cover;font-size:14px}.account-avatar{display:flex;gap:7px;align-items:center}.auth-gate{max-width:1000px;margin:auto;padding:60px 24px}.auth-welcome{max-width:580px;margin-bottom:30px}.auth-welcome h1{font-size:42px;line-height:1.15}.auth-gate .account-grid{grid-template-columns:1fr}.auth-gate .account-intro,.auth-gate .account-lower,.auth-gate .page-head{display:none}.auth-gate .account-signin{max-width:520px}.katex{font-size:1.12em}.option-text .katex .mfrac{padding:3px 0}.question-stem{line-height:1.9}
/* Study sequences, start dialog and exam countdown */
.exam-banner{display:flex;align-items:center;gap:20px;padding:14px 30px;background:#dff0e7;color:#153e36;border-bottom:1px solid #c3ddcf;font-size:13px}.exam-banner>div{display:grid;gap:4px;flex:1}.exam-banner strong{font-size:14px}.exam-banner span{color:#46695f}.exam-banner a{color:#235e4d;font-weight:600;white-space:nowrap}.exam-banner>button{background:none;border:0;font-size:25px;cursor:pointer;color:inherit;padding:2px 8px}.study-continue{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:26px;border-left:4px solid #4c9778}.study-continue h3{margin:8px 0}.study-continue p{margin-bottom:0;color:#64736b;font-size:13px;line-height:1.65}.study-continue>.btn{flex-shrink:0}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:25px 0}.field{display:flex;flex-direction:column;gap:10px;min-width:0}.field label{font-size:13px;font-weight:600;color:#28483d}.field select{width:100%;padding:13px 12px;border:1px solid #cbd7d0;border-radius:9px;font:inherit;font-size:14px;background:white;color:#173c32}.field small{color:#65766c;line-height:1.6;font-size:12px}.block-position{display:inline-block;border-radius:8px;padding:10px 14px;background:#edf4ef;color:#305d49;font-size:13px}.start-dialog{max-width:560px;width:calc(100% - 32px);padding:30px;border:1px solid #d4e2d8;border-radius:18px;box-shadow:0 24px 90px #0c2b3040}.start-dialog::backdrop{background:#102b2c80}.start-dialog h2{font-size:23px;line-height:1.4;margin-top:0}.start-dialog>p{color:#64736b;line-height:1.6;font-size:14px}.start-dialog .toolbar{margin-top:22px;justify-content:flex-end;flex-wrap:wrap}.batch-summary{margin-bottom:25px;background:#f0f7f1;border:1px solid #d6e7d9}.batch-summary h3{margin:10px 0;line-height:1.4}.batch-summary p{font-size:14px;color:#56705f;line-height:1.6}.batch-summary .toolbar{flex-wrap:wrap}.session-language{font-size:12px;color:#47775e;margin-bottom:8px}.session-language .text-link{font-size:12px;padding:0 5px}#launch-status:empty{display:none}#launch-status{font-size:13px;color:#42634f;line-height:1.6;overflow-wrap:anywhere}.btn:disabled{opacity:.5;cursor:not-allowed}#cloud-sync-status{font-size:13px;background:#eff6f0;padding:12px;border-radius:9px;overflow-wrap:anywhere}
@media(max-width:760px){.exam-banner{padding:12px 16px;gap:10px;flex-wrap:wrap}.exam-banner>div{min-width:210px}.exam-banner a{font-size:12px}.exam-banner>button{margin-left:auto}.form-grid{grid-template-columns:1fr;gap:20px}.study-continue{align-items:flex-start;flex-direction:column;gap:16px}.study-continue>.btn{width:100%}.start-dialog{padding:23px}.batch-summary .toolbar>.btn{flex:1 1 160px}}
.guest-invite{display:flex;gap:22px;align-items:center;flex-wrap:wrap;background:#edf7f0;border:1px solid #cfe4d5;margin-bottom:24px}.guest-invite>div:first-child{flex:1;min-width:240px}.guest-invite h3{margin:7px 0}.guest-invite p{font-size:14px;line-height:1.65;margin-bottom:0;color:#466553}.guest-invite>small{flex-basis:100%;font-size:12px}.pricing-grid.tier-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.tier-grid .price-card{padding:25px}.tier-grid h2{font-size:23px}.tier-grid .feature-list{font-size:13px}.tier-grid .btn{white-space:normal}@media(max-width:1000px){.pricing-grid.tier-grid{grid-template-columns:1fr}.guest-invite .toolbar{flex-wrap:wrap}}
#auth-form{display:grid;gap:16px;margin:20px 0}#auth-form label{display:grid;gap:7px;font-weight:600}#auth-form input{width:100%;min-height:46px;border:1px solid #cbd5d1;border-radius:10px;padding:10px 12px;font:inherit}#auth-form input:focus{outline:2px solid #39766a;outline-offset:2px}#auth-form .btn{margin-top:8px}