:root{--ink:#20342f;--muted:#697771;--green:#164b40;--deep:#123d38;--lime:#d0eda8;--paper:#f5f6f2;--line:#dfe5dd;--white:#fff;--amber:#95641c;--red:#ad4541;--radius:18px;font-family:Inter,"Segoe UI",Arial,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
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p{font-size:12px;flex:1}.result-item small{font-size:11px;color:var(--muted)}.result-item .badge-score{white-space:nowrap;min-width:36px;font-size:12px;font-weight:700}.scroll-top{position:fixed;bottom:20px;right:22px;border:1px solid var(--line);background:white;border-radius:50%;width:40px;height:40px;display:grid;place-items:center}.chip-row{display:flex;gap:8px;flex-wrap:wrap}.chip{border:1px solid var(--line);border-radius:8px;padding:9px 12px;background:white;font-size:12px}.chip.active{background:var(--green);border-color:var(--green);color:white}.formula{background:#eff4e8;border-radius:8px;padding:13px;font-size:13px;font-weight:600;margin:14px 0;overflow-wrap:anywhere}.bookmark{border:0;background:#f2f5ed;color:#667460;border-radius:8px;width:35px;height:35px;display:grid;place-items:center}.bookmark.on{background:#fcf1cb;color:#987320}.bookmark.on .icon{fill:#e4c566;stroke:#987320}dialog{border:0;border-radius:16px;max-width:520px;width:calc(100% - 32px);padding:0;box-shadow:0 25px 90px #071b3550;color:var(--ink)}dialog::backdrop{background:#0b292578;backdrop-filter:blur(2px)}.modal-head{display:flex;justify-content:space-between;align-items:center;background:var(--deep);color:white;padding:20px 24px}.modal-head h2{font-size:18px}.modal-head h2 .icon{color:var(--lime)}.modal-head button{background:none;border:0;color:white;padding:2px;display:grid;place-items:center}.modal-body{padding:24px}.modal-body p{font-size:13px;color:var(--muted);margin-bottom:18px}.modal-body .field{margin-bottom:15px}.modal-foot{padding:0 24px 23px;display:flex;justify-content:flex-end;gap:10px}#toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);border-radius:9px;background:var(--deep);color:white;padding:13px 20px;font-size:13px;z-index:100;max-width:calc(100% - 32px);box-shadow:0 5px 25px #10201b30;display:none}#toast.show{display:block}.error-screen{max-width:560px;margin:100px auto;padding:30px}.error-screen p{margin:20px 0}.footer-line{display:flex;justify-content:space-between;gap:20px;font-size:10px;color:#82907f;border-top:1px solid var(--line);padding-top:20px;margin-top:35px}.footer-line a{color:inherit}.spacer{height:25px}.divider{height:1px;background:var(--line);margin:20px 0}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.amount-field{display:flex;align-items:center;gap:12px}.amount-field input{max-width:330px;font-size:20px;font-variant-numeric:tabular-nums}.amount-field b{font-size:14px}.status-line{font-size:12px;color:var(--muted);margin-top:12px}.pill-stack{display:flex;gap:6px;align-items:center;flex-wrap:wrap}.knowledge-summary{font-size:14px;line-height:1.75;background:#f4f7ed;padding:17px;border-radius:10px;margin-bottom:15px}.load-more{display:flex;justify-content:center;padding:22px}.mobile-shade{display:none}
@media(min-width:1600px){.main{padding-top:40px}.focus-card{min-height:245px}.focus-card h2{font-size:29px}.topic-card{padding:23px}.sidebar{width:252px}.shell{grid-template-columns:252px minmax(0,1fr)}}
@media(max-width:1200px){.sidebar{width:208px;padding:25px 14px}.shell{grid-template-columns:208px minmax(0,1fr)}.main{padding:28px}.topbar{padding:0 28px}.goal-card{gap:15px;padding:18px}.ring{width:98px;height:98px}.ring strong{font-size:23px}.focus-row{grid-template-columns:1.4fr 1fr}.topic-grid.full{grid-template-columns:repeat(2,1fr)}.mode-grid{grid-template-columns:repeat(2,1fr)}.metrics{gap:10px}.metric{padding:16px}.dashboard-bottom{gap:20px;grid-template-columns:minmax(0,1.5fr) minmax(240px,1fr)}.topic-grid{grid-template-columns:1fr}.plan-phases{grid-template-columns:repeat(2,1fr)}}
@media(max-width:960px){.sidebar{width:185px;padding:24px 10px}.shell{grid-template-columns:185px minmax(0,1fr)}.brand{gap:8px}.brand strong{font-size:18px}.brand small{font-size:8px}.brand-mark{width:35px;height:35px}nav a{font-size:12px;padding:12px}.main{padding:24px}.topbar{padding:0 24px;height:66px}.focus-row{grid-template-columns:1fr}.goal-card{min-height:140px;justify-content:flex-start}.goal-card p{max-width:260px}.metrics{grid-template-columns:repeat(2,1fr)}.dashboard-bottom{grid-template-columns:1fr}.topic-grid{grid-template-columns:repeat(2,1fr)}.dashboard-aside{display:grid;grid-template-columns:1fr 1fr;gap:18px}.dashboard-aside .panel{margin-bottom:0}.two-col{grid-template-columns:1fr}.top-right>span:first-child{display:none}.heading-row h1{font-size:26px}.mode-grid{grid-template-columns:1fr 1fr}}
@media(max-width:680px){.shell{display:block}.sidebar{transform:translateX(-100%);transition:transform .2s;width:235px}.shell.menu-open .sidebar{transform:translateX(0)}.shell.menu-open .mobile-shade{display:block;position:fixed;inset:0;background:#0c292470;z-index:15}.workspace{width:100%}.mobile-menu{display:grid;place-items:center;background:none;border:0;color:var(--green);padding:7px}.topbar{height:59px;padding:0 16px;position:sticky;top:0;z-index:10;background:#fcfdfaee;backdrop-filter:blur(8px)}.breadcrumb{gap:8px}.breadcrumb>span{display:none}.top-right{gap:9px}.top-right .pill{font-size:10px;padding:6px 8px}.avatar{display:none}.main{padding:25px 17px 32px}.heading-row{gap:12px;margin-bottom:22px;flex-wrap:wrap}.heading-row h1{font-size:25px;letter-spacing:-.7px}.heading-row h1 .icon{width:25px;height:25px}.heading-row>.actions{width:100%}.eyebrow{font-size:9px}.subtitle{font-size:12px;line-height:1.65}.focus-row{gap:13px;margin-bottom:16px}.focus-card{padding:25px 22px;min-height:220px;border-radius:14px}.focus-card h2{font-size:24px}.focus-card p{max-width:300px}.focus-footer{gap:12px}.goal-card{padding:18px 20px;gap:24px;border-radius:14px;min-height:134px}.ring{width:91px;height:91px}.ring:before{inset:7px}.metric{padding:15px 14px}.metric-label{font-size:11px}.metric-value{font-size:25px}.metric-value small{font-size:12px}.metric p{font-size:10px;line-height:1.6}.metrics{margin-bottom:25px}.section-head h2{font-size:17px}.section-head .text-button{font-size:10px;white-space:nowrap}.topic-grid,.topic-grid.full{grid-template-columns:1fr}.topic-card{padding:18px}.topic-top{margin-bottom:8px}.topic-card .description{margin-bottom:14px}.dashboard-aside{grid-template-columns:1fr}.mode-grid{grid-template-columns:1fr;gap:14px}.mode-card{padding:22px}.mode-card .topic-symbol{margin-bottom:15px}.panel{padding:19px}.filters{gap:10px}.filters .field{min-width:calc(50% - 10px);flex:1}.filters .field:first-child{flex-basis:100%}.knowledge-item summary{gap:10px;padding:15px 13px}.knowledge-item summary .question-name{font-size:12px}.knowledge-item summary .pill:not(.score-pill){display:none}.knowledge-body{padding:15px}.question-card{padding:21px 17px}.question-card h2{font-size:17px;line-height:1.65;margin:20px 0}.question-card h2 .icon{display:none}.question-meta{align-items:flex-start}.question-meta .pill{font-size:10px}.lesson-top{align-items:flex-start}.lesson-meta{font-size:11px}.timer{font-size:12px;padding:7px 9px}.lesson-footer>.actions{width:100%;justify-content:space-between}.lesson-footer>.button{width:100%}.grade-buttons{gap:7px}.grade-buttons button{font-size:11px;padding:13px 6px;line-height:1.5}.grade-buttons button span{font-size:9px}.form-grid{grid-template-columns:1fr}.form-grid .wide{grid-column:auto}.plan-phases{gap:10px}.phase{padding:15px}.phase h3{font-size:12px;gap:6px}.phase h3 .icon{width:16px;height:16px}.phase p{font-size:11px}.phase small{font-size:9px}.plan-phases .number{margin-bottom:10px}.active-banner{font-size:12px;padding:12px;align-items:flex-start}.active-banner .button{white-space:nowrap}.source-links{font-size:10px;gap:10px}.footer-line{font-size:9px;flex-wrap:wrap;gap:8px}.score-number{font-size:53px}.score-hero{padding:25px 18px}.score-hero h2{font-size:20px}.score-hero .actions{justify-content:center}.syllabus-row span{font-size:12px}.modal-body{padding:20px}.modal-head{padding:17px 20px}.modal-head h2{font-size:16px}.topbar .breadcrumb b{font-size:11px}.result-item{gap:8px}.result-item p{font-size:11px}.callout{font-size:11px}.page-note{font-size:10px}.focus-footer .button{font-size:12px}.empty{padding:28px 12px}.amount-field input{max-width:100%}.amount-field{min-width:0}.main>*{min-width:0}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
.mc-overview{border:1px solid var(--line,#dce7df);border-radius:22px;background:#fff;padding:25px;margin:24px 0}.mc-overview-title{display:flex;align-items:center;gap:14px;margin-bottom:22px}.mc-overview-title h2{font-size:20px;display:flex;align-items:center;gap:8px}.mc-overview-title p{color:#617167;margin:5px 0 0;font-size:14px}.learning-steps{display:grid;grid-template-columns:1fr 1fr .9fr;gap:22px}.learning-steps>div{position:relative;padding:5px 0 0 40px}.learning-steps h3{display:flex;align-items:center;gap:7px;font-size:16px}.learning-steps p{color:#607367;font-size:14px;line-height:1.6;margin:8px 0 13px}.learning-steps b,.learning-steps small{display:block;margin-top:9px}.learning-steps small{color:#607367;line-height:1.6;font-size:12px}.learning-steps .actions{margin-top:13px;flex-wrap:wrap;gap:7px}.step-number{position:absolute;left:0;top:0;display:grid;place-items:center;width:29px;height:29px;border-radius:50%;background:#e6eee9;color:#335845;font-weight:800;font-size:13px}.learning-steps .repeat-step{border-left:1px solid #e4ebe6;padding-left:53px}.repeat-step .step-number{left:13px}.mc-progress>span{background:#7599a3}.mc-topic{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12px;margin:17px 0 8px;color:#54717b}.mc-topic>span{display:flex;align-items:center;gap:6px}.mc-topic .icon{width:15px;height:15px}.mc-history{margin-top:24px}.mc-history .result-list{margin-top:15px}.mc-path{display:flex;align-items:center;gap:9px;margin:22px 0;font-size:12px;font-weight:700;color:#86918a;flex-wrap:wrap}.mc-path .icon{width:14px;height:14px}.mc-path .current{color:#20513a;background:#e5f0e9;border-radius:20px;padding:6px 12px}.mc-lesson .lesson-meta{margin-top:13px}.mc-scope{margin-top:-8px;margin-bottom:23px}.mc-choices{border:0;padding:0;margin:0 0 18px;min-width:0}.mc-choices legend{font-size:13px;color:#617367;margin-bottom:12px}.mc-option{display:flex;align-items:flex-start;gap:13px;padding:17px;border:1px solid #dce5df;border-radius:13px;margin-bottom:10px;cursor:pointer;background:#fff;position:relative;transition:background .15s,border-color .15s}.mc-option:hover{border-color:#658572;background:#f9fbfa}.mc-option.selected{border-color:#426e56;background:#f0f6f2;box-shadow:0 0 0 1px #426e56}.mc-option input{position:absolute;left:16px;top:20px;opacity:0;width:30px;height:30px}.mc-option:focus-within{outline:3px solid #81a88a;outline-offset:3px}.option-letter{flex-shrink:0;width:30px;height:30px;border:1px solid #d3ded6;border-radius:8px;display:grid;place-items:center;font-size:12px;font-weight:800;background:#f5f8f6;color:#526a59}.mc-option.selected .option-letter{background:#315d45;color:white;border-color:#315d45}.option-text{font-size:15px;line-height:1.65;padding-top:2px;overflow-wrap:anywhere}.mc-option.correct{background:#edf7ee;border-color:#81ab88;box-shadow:none}.mc-option.correct .option-letter{background:#315d45;color:white;border-color:#315d45}.mc-option.incorrect{background:#fff3e8;border-color:#c59975;box-shadow:none}.mc-option.incorrect .option-letter{background:#9b5b30;color:white;border-color:#9b5b30}.option-verdict{display:flex;align-items:center;gap:6px;margin-top:7px;font-size:12px;color:#326640}.incorrect .option-verdict{color:#925123}.option-verdict .icon{width:15px;height:15px}.mc-option:has(input:disabled){cursor:default}.mc-next{margin-top:22px;margin-bottom:15px}.mc-original{border-top:1px solid #e1e9e3;margin-top:20px;padding-top:17px}.mc-original summary{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:13px;font-weight:700;color:#476451;padding:3px 0}.mc-original summary:after{content:'+';margin-left:auto;font-size:18px}.mc-original[open]>summary:after{content:'−'}.mc-original>p{margin-top:16px}.mc-lesson .callout strong{display:flex;gap:7px;align-items:center}.button:disabled{opacity:.5;cursor:not-allowed}.ghost{background:transparent}
@media(max-width:1100px){.learning-steps{grid-template-columns:1fr 1fr}.learning-steps .repeat-step{grid-column:1/-1;border-left:0;border-top:1px solid #e4ebe6;padding:20px 0 0 40px}.repeat-step .step-number{left:0;top:17px}.repeat-step p{margin-bottom:4px}}
@media(max-width:600px){.mc-overview{padding:19px;margin:20px 0}.mc-overview-title>.topic-symbol{display:none}.mc-overview-title h2{font-size:18px}.learning-steps{grid-template-columns:1fr;gap:24px}.learning-steps .repeat-step{grid-column:auto}.mc-option{padding:13px;gap:11px}.option-text{font-size:14px}.mc-path{gap:5px;font-size:10px}.mc-path .current{padding:5px 8px}.mc-path .icon{width:11px}.mc-next .button{width:100%}.mc-overview .actions .button{font-size:12px}.mc-overview-title p{font-size:13px}}
.question-card h2 .icon{display:inline-block}.mc-original>summary{gap:8px}.mc-original:not([open])>summary~*{display:none}
.install-entry{display:flex;align-items:center;gap:9px;width:100%;border:1px solid #476c5e;border-radius:10px;background:#ffffff08;color:#d7eadc;padding:12px;text-align:left;font-size:12px;line-height:1.5;margin:14px 0 0}.install-entry .icon{width:18px;height:18px}.install-entry:hover{background:#ffffff12}.install-steps{padding-left:22px;margin:0 0 22px;font-size:14px;line-height:1.7}.install-steps li{padding:6px 0}.app-update{position:fixed;z-index:90;bottom:max(20px,env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:15px;padding:14px 18px;border-radius:12px;background:#123d38;color:white;font-size:13px;width:max-content;max-width:calc(100% - 30px);box-shadow:0 4px 25px #132d3840}.offline-main{max-width:880px;margin:0 auto;padding:35px 24px max(35px,env(safe-area-inset-bottom))}.offline-main>.brand{color:#123d38;padding:0 0 30px}.offline-main>p{margin:18px 0}.offline-main>.callout{margin-bottom:20px}.offline-filters{display:grid;grid-template-columns:2fr 1fr;gap:15px;margin-top:30px}.offline-main .knowledge-item{background:white}.offline-main .knowledge-body h2{font-size:16px;margin-top:22px}.offline-main .knowledge-body p{margin:12px 0}.installation-card{margin:20px 0}.installation-card h2{margin-bottom:10px}.installation-card p{font-size:13px;color:var(--muted)}.installation-card .actions{margin-top:17px}@media(display-mode:standalone){.topbar{padding-top:env(safe-area-inset-top);height:calc(76px + env(safe-area-inset-top))}.main{padding-bottom:calc(40px + env(safe-area-inset-bottom))}}@media(max-width:600px){.offline-filters{grid-template-columns:1fr}.offline-main{padding:24px 16px}.offline-main h1{font-size:24px}.app-update{align-items:flex-start}.app-update .button{flex-shrink:0}}
.sidebar{overflow-y:auto}
.study-steps{display:flex;align-items:center;gap:12px;flex-wrap:wrap;color:#7c887f;font-size:13px;font-weight:600;margin:20px 0 24px}.study-steps .current{background:#e5f0e8;color:#245c4c;padding:7px 12px;border-radius:20px}.study-steps .icon{width:15px}.study-card{margin-top:24px}.study-ready p{line-height:1.8;font-size:14px;margin-top:15px}.study-ready .callout{margin:20px 0}.study-ready .actions{flex-wrap:wrap}.study-ready h2{display:flex;gap:10px;align-items:center}
.answer-sketches{margin:24px 0 28px}.sketch-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:13px}.sketch-heading h3{display:flex;align-items:center;gap:9px;font-size:16px;color:#245c4c}.sketch-heading>span{font-size:11px;color:#758479}.sketch-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,265px),1fr));gap:14px;align-items:start}.sketch-card{margin:0;border:1px solid #d9e4da;border-radius:14px;overflow:hidden;background:#fff}.sketch-preview{display:block;width:100%;position:relative;padding:0;border:0;border-bottom:1px solid #e7ece5;background:#fbfcf8;cursor:zoom-in;text-align:center}.sketch-preview img{display:block;width:100%;height:auto;max-height:355px;object-fit:contain}.sketch-preview:hover{background:#f0f5eb}.sketch-preview:focus-visible{outline:3px solid #618f73;outline-offset:-3px}.sketch-enlarge{position:absolute;right:9px;bottom:9px;padding:5px 9px;border-radius:7px;background:#fffef3ef;color:#355f4b;border:1px solid #d9e4da;font-size:11px;font-weight:600}.sketch-card figcaption{padding:15px 17px 17px}.sketch-card figcaption strong{font-size:15px;color:#234e3e}.sketch-card figcaption p{font-size:13px;line-height:1.7;color:#65756c;margin:7px 0 0}.sketch-note{color:#77877b;font-size:11px;line-height:1.6;margin-top:10px}.sketch-dialog{max-width:min(880px,calc(100vw - 26px));width:820px;padding:0;border:0;border-radius:17px;max-height:calc(100dvh - 28px);overflow:auto;background:#fff;box-shadow:0 20px 90px #17392955}.sketch-dialog::backdrop{background:#17392bd0}.sketch-dialog .modal-head{position:sticky;top:0;z-index:2;background:#123d38;color:#fff}.sketch-dialog .modal-head h2{display:flex;align-items:center;gap:10px}.sketch-dialog .modal-head button{font-size:28px}.sketch-view{max-height:60dvh;overflow:auto;background:#fbfcf8;padding:14px}.sketch-view img{display:block;max-width:100%;width:100%;height:auto;max-height:55dvh;object-fit:contain}.sketch-view.zoomed img{min-width:760px;width:760px;max-width:none;max-height:none}.sketch-view.zoomed{max-height:65dvh}.sketch-dialog-caption{padding:16px 23px 0;font-size:14px;line-height:1.7;color:#546d60}.sketch-dialog .modal-foot{display:flex;flex-wrap:wrap;gap:10px;padding:18px 23px}.offline-main .sketch-card figcaption p{margin:7px 0 0}@media(max-width:600px){.sketch-grid{grid-template-columns:1fr}.sketch-preview img{max-height:340px}.sketch-card figcaption{padding:13px 14px 15px}.sketch-dialog-caption{padding:13px 17px 0}.sketch-dialog .modal-foot{padding:15px 17px}.sketch-dialog .modal-head{padding:15px 17px}.sketch-dialog .modal-head h2{font-size:17px}.sketch-note{font-size:11px}.sketch-heading>span{display:none}.sketch-view{padding:7px}.sketch-view img{max-height:50dvh}}

/* Readable question parts, including the offline reader and training. */
.question-copy{display:block;min-width:0;white-space:normal;overflow-wrap:anywhere}
.question-paragraph{display:block}
.question-paragraph+.question-paragraph{margin-top:.65em}
.question-parts{display:grid;gap:.65em}
.question-paragraph+.question-parts{margin-top:.65em}
.question-part{display:grid;grid-template-columns:1.5em minmax(0,1fr);gap:.3em;align-items:baseline}
.question-marker{font-weight:700;color:var(--green)}
.question-part-text{min-width:0}
.knowledge-item>summary>.question-name{min-width:0}
@media(max-width:680px){
  .knowledge-item>summary{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:12px 10px;padding:17px 16px}
  .knowledge-item>summary>.question-id{grid-column:1;grid-row:1;justify-self:start;font-size:12px}
  .knowledge-item>summary>.pill{grid-column:2;grid-row:1;justify-self:end}
  .knowledge-item>summary>.chevron{grid-column:3;grid-row:1;align-self:center}
  .knowledge-item>summary>.question-name{grid-column:1/-1;grid-row:2;font-size:16px;line-height:1.7}
  .question-card h2{font-size:18px;line-height:1.7}
  .answer-text,.option-text{font-size:16px;line-height:1.8}
  .solution-block h3,.sketch-heading h3{font-size:16px}
  .knowledge-body .callout,.question-card .callout{font-size:14px;line-height:1.8}
  .sketch-card figcaption p{font-size:15px;line-height:1.75}
  .sketch-dialog-caption{font-size:16px;line-height:1.8}
}

/* Use selective emphasis within the question heading as well as answers. */
.question-card h2>.question-copy{font-weight:400}
.question-copy strong,.answer-text strong{font-weight:700}
