@font-face{font-family:"Noto Study";src:url("study-font.woff2") format("woff2");font-weight:100 900;font-display:swap;}
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@media(min-width:1500px){.main{padding:32px 58px}}@media(max-width:1190px){.sidebar{width:205px;padding:28px 16px}.main{margin-left:205px;width:calc(100% - 205px);padding:25px}.content-grid{grid-template-columns:minmax(0,1fr) 260px;gap:17px}.hero{padding:27px}.hero-art{width:165px}.stat-card{padding:15px;gap:8px}.chapter-grid{grid-template-columns:repeat(2,1fr)}.route{padding:18px 15px;gap:13px}.stat-card strong{font-size:20px}}@media(max-width:980px){.content-grid{grid-template-columns:1fr}.aside-panels{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.panel{margin:0}.stat-grid{grid-template-columns:repeat(2,1fr)}.hero-art{width:130px}.hero h2{font-size:23px}.hero-copy{max-width:72%}}@media(max-width:720px){.shell{display:block}.sidebar{inset:auto 0 0;width:100%;height:70px;padding:8px 10px;flex-direction:row;border-top:1px solid #325849}.brand,.nav-title,.side-grow,.side-note,.user{display:none}.nav{flex:1;display:flex;flex-direction:row;gap:2px;justify-content:space-around}.nav button{flex:1;flex-direction:column;gap:4px;align-items:center;justify-content:center;font-size:9px;padding:6px 2px;border-radius:10px}.nav .badge{position:absolute;font-size:8px;margin:0;transform:translate(15px,-4px);padding:1px 4px}.main{width:100%;margin:0;padding:20px 18px 95px}.topbar{margin-bottom:25px}.top-stats{gap:10px}.top-stat{font-size:10px}.breadcrumb{font-size:10px}.greeting h1{font-size:25px}.greeting{margin-bottom:20px}.date-pill{display:none}.hero{padding:25px 22px;min-height:215px}.hero h2{font-size:23px}.hero-copy{max-width:100%;width:100%}.hero-art{width:100px;height:110px;position:absolute;right:12px;top:15px;opacity:.24}.hero p{font-size:11px;max-width:260px}.hero-actions{gap:8px}.hero-actions .primary{padding:12px 15px}.hero-actions .text-button{font-size:10px}.stat-grid{gap:10px;margin-bottom:25px}.stat-card{padding:15px 14px;gap:11px}.stat-card strong{font-size:21px}.stat-card small{font-size:9px}.stat-icon{width:33px;height:33px}.section-heading h2{font-size:16px}.section-heading .label{font-size:9px}.route{padding:17px 14px;gap:13px}.route-num{width:38px;height:38px;font-size:16px}.route-info h3{font-size:13px}.route-info p{font-size:9px}.route-go{padding:7px}.aside-panels{grid-template-columns:1fr 1fr;gap:12px}.panel{padding:18px}.goal-ring{width:112px;height:112px}.panel .primary{font-size:10px;padding:11px 7px}.insight h3{font-size:13px}.insight p{font-size:10px}.chapter-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.chapter-card{padding:16px;min-height:193px}.chapter-card h3{font-size:13px}.chapter-card p{font-size:9px}.chapter-foot{flex-wrap:wrap}.chapter-foot .secondary{padding:8px 11px;font-size:10px}.question-card{padding:21px 18px}.prompt{font-size:17px;line-height:1.7}.q-meta{margin-bottom:18px}.option{padding:13px 12px;gap:10px;font-size:13px}.q-bottom{gap:8px;flex-wrap:wrap}.q-bottom .primary{padding:11px 16px}.quiz-top{font-size:10px}.quiz-top .secondary{padding:9px 11px;font-size:10px}.key-help{display:none}.analytics-grid{grid-template-columns:1fr}.question-row{padding:16px;gap:12px;align-items:flex-start}.question-row p{font-size:12px}.question-row .secondary{font-size:10px;padding:8px 10px}.result-stat{padding:19px 10px}.result-stat strong{font-size:24px}.result-stat span{font-size:10px}.toast{bottom:90px}.feedback{padding:17px}.feedback p{font-size:12px}.footer-line{font-size:9px}.toolbar{margin:20px 0}.focus-options{grid-template-columns:1fr 1fr}.resume{padding:13px}.resume p{font-size:11px}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
/* A calmer, stronger typographic hierarchy for long study sessions. */
:root{font-family:'Noto Study','PingFang SC','Microsoft YaHei',sans-serif;--cream:#f7f6ef;--orange:#eb783d}.brand strong{font-weight:750;font-size:22px}.brand small{font-size:10px;letter-spacing:1.4px}.nav button{font-size:15px;font-weight:550}.nav-title{font-size:10px}.greeting h1{font-size:31px;font-weight:750;letter-spacing:-1px}.greeting p,.subtitle{font-size:14px;line-height:1.95}.eyebrow{font-size:11px;letter-spacing:1.6px}.breadcrumb{font-size:13px}.hero h2{font-size:34px;font-weight:750;line-height:1.5}.hero p{font-size:14px}.hero{min-height:277px;background:linear-gradient(118deg,#e3efcf,#e2edd7);border-radius:28px}.hero-art{width:232px;height:217px}.hero-art .art-chip{font-size:10px}.mini-label{font-size:11px}.primary{font-size:14px;padding:13px 23px;border-radius:12px;box-shadow:0 4px 0 #0e2b21}.secondary{font-size:13px;padding:12px 16px}.text-button{font-size:12px}.stat-card strong{font-size:26px}.stat-card small{font-size:12px}.route-info h3{font-size:16px;font-weight:650}.route-info p{font-size:12px}.route-top .tag{font-size:10px}.route-detail{font-size:11px}.route{padding:23px;border-radius:20px}.route-num{width:50px;height:50px}.section-heading h2{font-size:20px;font-weight:700}.section-heading p{font-size:12px}.panel h3{font-size:15px;font-weight:650}.goal-message{font-size:12px}.day{font-size:10px}.insight h3{font-size:17px}.insight p{font-size:13px}.insight .foot{font-size:10px}.banner-note{font-size:12px;line-height:1.9}.chapter-card h3{font-size:16px}.chapter-card p{font-size:12px}.chapter-foot span{font-size:11px}.prompt{font-family:'Noto Study',sans-serif;font-size:22px;font-weight:550;line-height:1.75}.option{font-size:17px;padding:16px 18px;line-height:1.65}.option .letter{width:32px;height:32px;font-size:13px}.q-chapter{font-size:12px}.section-label{font-size:12px}.feedback h3{font-size:17px}.feedback p{font-size:15px;line-height:1.95}.feedback small{font-size:12px}.question-card{border-radius:25px;padding:35px}.question-row p{font-size:15px}.question-row small{font-size:12px}.setting p{font-size:14px}.setting small{font-size:12px}.settings-foot{font-size:12px}.focus-options label{font-size:12px}.hint-box{font-size:14px}.report-toggle{font-size:12px}.result-hero h1{font-size:31px}.footer-line{font-size:11px}.quiz-label{font-size:13px}.key-help{font-size:11px}.question-row{border-radius:18px}
.quest-banner{display:flex;gap:16px;align-items:center;margin-top:23px;padding:18px 22px;border:1px solid #e6d7b9;background:linear-gradient(100deg,#fff4d8,#fbf2e5);border-radius:17px}.quest-banner .quest-icon{background:#f1dfab;width:43px;height:43px;display:grid;place-items:center;border-radius:12px;color:#976c29}.quest-banner strong{font-size:14px;display:block}.quest-banner p{font-size:12px;color:#a0804f;margin-top:5px;line-height:1.7}.quest-banner button{margin-left:auto;white-space:nowrap}.combo-bar{display:flex;align-items:center;justify-content:center;gap:10px;margin:16px 0 24px;min-height:28px;font-size:12px;color:#b88035}.combo-dot{width:9px;height:9px;border-radius:50%;background:#e3e7d9}.combo-dot.on{background:#e79f43;box-shadow:0 0 0 4px #f9e9cd}.combo-label{margin-left:8px}.explanation{margin-top:20px;border:1px solid #dce6d0;border-radius:17px;background:#fff;padding:24px}.explanation-header{font-size:14px;font-weight:700;color:#347052;display:flex;align-items:center;gap:8px;margin-bottom:15px}.explanation h4{margin:17px 0 7px;font-size:12px;color:#8c9d7b;font-weight:650;letter-spacing:.3px}.explanation p{font-size:15px;line-height:2;color:#344c3d;margin:0}.explanation .memory{background:#eff5e7;border-radius:10px;padding:12px 15px;font-size:13px;line-height:1.9;margin-top:17px;color:#4b7350}.explanation .caution{background:#fff3e5;border:1px solid #f1d4b4;border-radius:10px;padding:13px 15px;font-size:13px;line-height:1.9;margin-bottom:18px;color:#ac743d}.explanation .source-links{font-size:11px;display:flex;gap:12px;flex-wrap:wrap;margin-top:15px}.explanation .source-links a{color:#7f9671}.correct-pop{animation:correctPop .4s}.feedback .reward-badge{margin-left:auto;background:#d4eab6;color:#4b7c3a;font-family:Manrope;font-size:13px;padding:5px 9px;border-radius:7px}.quiz-source{font-size:11px;line-height:1.9;color:#91a082;margin-top:12px}.session-milestone{font-family:Manrope,sans-serif;background:#fff7e0;padding:6px 10px;border-radius:7px;color:#ac852e;font-size:12px}@keyframes correctPop{50%{transform:scale(1.015)}}
@media(max-width:1190px){.hero h2{font-size:29px}.hero-art{width:180px}.main{padding:27px 29px}.stat-card{gap:11px}.stat-card strong{font-size:24px}.stat-card small{font-size:11px}.content-grid{grid-template-columns:minmax(0,1fr) 280px}}
@media(max-width:980px){.content-grid{grid-template-columns:1fr}.hero-art{width:185px}.hero-copy{max-width:73%}.quest-banner{padding:15px}.quest-banner p{font-size:11px}.hero p{font-size:12px}}
@media(max-width:720px){.main{padding:20px 17px 97px}.nav button{font-size:10px}.greeting h1{font-size:26px}.greeting p{font-size:12px}.hero{min-height:257px;padding:25px}.hero h2{font-size:29px}.hero-copy{max-width:100%}.hero-art{width:135px;height:145px;right:12px;top:12px;opacity:.27}.hero p{max-width:280px;font-size:12px}.hero-actions{flex-wrap:wrap}.hero-actions .primary{font-size:13px;padding:12px 17px}.hero-actions .text-button{font-size:11px}.stat-card{padding:17px 13px;gap:10px}.stat-card strong{font-size:24px}.stat-card small{font-size:11px}.route{padding:20px 16px;gap:13px}.route-info h3{font-size:15px}.route-info p{font-size:11px}.route-detail{font-size:10px}.route-num{width:41px;height:41px}.section-heading h2{font-size:18px}.aside-panels{grid-template-columns:1fr}.panel h3{font-size:15px}.goal-ring{width:134px;height:134px}.goal-message{font-size:13px}.panel .primary{font-size:13px;padding:12px}.week{max-width:270px;margin:18px auto 0}.insight h3{font-size:17px}.insight p{font-size:13px}.quest-banner{flex-wrap:wrap;gap:11px}.quest-banner strong{font-size:13px}.quest-banner p{font-size:12px}.quest-banner button{width:100%;justify-content:center}.chapter-card h3{font-size:14px}.chapter-card p{font-size:10px}.chapter-foot .secondary{font-size:12px}.question-card{padding:24px 18px}.prompt{font-size:20px;line-height:1.8}.option{font-size:15px;padding:15px 13px}.option .letter{width:29px;height:29px;font-size:12px}.q-chapter{font-size:11px}.quiz-label{font-size:11px}.section-label{font-size:11px}.q-bottom .primary{font-size:13px;padding:12px 17px}.q-bottom .text-button{font-size:11px}.explanation{padding:20px 17px}.explanation p{font-size:14px}.feedback p{font-size:14px}.explanation .caution{font-size:12px}.feedback small{font-size:11px}.quest-banner .quest-icon{width:37px;height:37px}.footer-line{font-size:10px}.hint-box{font-size:13px}.question-row p{font-size:14px}.question-row small{font-size:10px}.q-chapter .difficulty{font-size:10px}.combo-bar{gap:8px;font-size:11px}}
.quest-banner{margin-bottom:24px}.original-hint{margin:14px 0}.original-hint summary{cursor:pointer;font-size:13px;color:#73836d}.explanation-header .tag{margin-left:auto;font-size:11px}.explanation .memory .icon{vertical-align:middle}.stat-card strong,.route-num,.result-stat strong,.ring-text strong,.reward-badge,.session-milestone{font-family:'Noto Study',sans-serif;font-variant-numeric:tabular-nums}.answer-input,.notes textarea{font-family:'Noto Study',sans-serif;font-size:15px;line-height:1.8}.grade-buttons{margin:20px 0;flex-wrap:wrap}button:focus-visible,summary:focus-visible,a:focus-visible{outline:3px solid #b9c98f;outline-offset:4px}.option-text{overflow-wrap:anywhere}.feedback h3{flex-wrap:wrap}.quiz-top{gap:12px}.quiz-label{min-width:0}.source-warning{line-height:1.85}.page-title{font-family:'Noto Study',sans-serif}.explanation .source-links a{overflow-wrap:anywhere}
@media(max-width:720px){.quiz-top{flex-wrap:wrap}.quiz-top .quiz-label{order:3;width:100%;text-align:center;font-size:12px}.quiz-top>.xp{margin-left:auto}.quiz-top .secondary{font-size:12px}.q-bottom-left{flex-wrap:wrap;gap:10px}.footer-line{gap:14px;flex-wrap:wrap}.result-buttons{flex-wrap:wrap}.result-stat strong{font-size:23px}.result-stat span{font-size:11px}.explanation-header{flex-wrap:wrap}.explanation-header .tag{margin-left:0}.question-row{flex-wrap:wrap}.question-row .row-copy{width:100%}.question-row .secondary{font-size:12px}.focus-options{grid-template-columns:1fr}.setting small{font-size:12px}.quest-banner{margin-bottom:18px}.brand strong{letter-spacing:-.5px}}
.confirm-message{font-size:15px;line-height:1.9;color:#60705e;margin:15px 0 23px}.confirm-actions{display:flex;justify-content:flex-end;gap:13px;flex-wrap:wrap}
.back-to-medicine{display:block;color:#c4d5c7;text-decoration:none;font-size:11px;padding:0 8px 18px;line-height:1.6}.back-to-medicine:hover{color:#fff}.breadcrumb a{color:inherit;text-decoration:none}.breadcrumb a:hover{color:#315d42}.breadcrumb{display:flex;align-items:center;gap:7px;flex-wrap:wrap}@media(max-width:720px){.back-to-medicine{display:none}.breadcrumb{font-size:10px;gap:5px}}
/* A calmer reading surface, with serif text and a compact study dashboard. */
:root{--forest:#86533e;--green:#8e5d43;--cream:#f7f5f0;--ink:#34372f;--muted:#75776d;--line:#e5e2da;font-family:var(--ui-font);background:var(--paper);color:var(--text)}body{font-family:var(--ui-font);-webkit-font-smoothing:antialiased}h1,h2,h3,.page-title{font-family:var(--reading-font);font-weight:500!important}.sidebar{background:#efece4;color:#34372f;border-right:1px solid #e3dfd5}.brand strong{font-weight:500;letter-spacing:-.3px}.brand small,.nav-title,.user small{color:#848375}.nav button,.nav .classroom-nav{color:#77766a;font-size:14px;padding:13px 15px}.nav .classroom-nav{display:flex;align-items:center;gap:12px;border-radius:12px;text-decoration:none}.nav button.active{background:#e5dbce;color:#7d523b}.nav button:hover,.nav .classroom-nav:hover{background:#e9e4d9;color:#685744}.nav 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p{font-size:14px;line-height:1.9;color:#7c7868}.study-art{width:185px;flex-shrink:0;opacity:.8}.study-art svg{width:100%}.primary{background:#86543e;border-color:#86543e;box-shadow:none;font-size:14px;font-weight:450;padding:14px 21px;text-decoration:none}.primary:hover{background:#986447;box-shadow:none}.secondary{font-size:13px;color:#74604b;font-weight:450;padding:12px 18px;background:#fdfcf9;border-color:#dfdacd}.secondary:hover{background:#f0eade}.text-button{font-size:13px;color:#8a6249}.hero-actions{margin-top:25px;gap:14px}.quiet-summary{display:flex;gap:28px;color:#858273;font-size:12px;padding:16px 2px 35px;margin-bottom:12px;flex-wrap:wrap}.quiet-summary button{margin-left:auto;font-size:12px;background:none;color:#947358}.section-heading{margin-bottom:24px}.section-heading 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18px}.concept-links>span{font-size:10px;color:#888576}.concept-links a{font-size:12px;color:#8a6046;border:1px solid #ddd3c4;background:#f3eee4;padding:7px 11px;border-radius:7px;text-decoration:none;line-height:1.8}.question-source{font-size:11px;color:#929083;margin-bottom:25px}.question-source summary{cursor:pointer}.question-source p{margin:13px 0;line-height:1.9}.combo-bar{display:none}.quiz-progress{margin-bottom:29px}.feedback{padding:24px;margin-top:28px;background:#eef1e5;border-color:#dde4d0}.feedback h3{font-size:19px;line-height:1.7}.feedback p{font-family:var(--reading-font);font-size:17px;line-height:2.1;margin:13px 0}.feedback small{font-size:11px;line-height:1.9}.explanation{padding:28px;margin-top:24px;background:#fcfbf7;border-color:#e2ded2}.explanation-header{font-family:var(--reading-font);font-size:20px;font-weight:500;color:#575c46;margin-bottom:22px}.explanation p{font-family:var(--reading-font);font-size:18px;line-height:2.15;color:#454a3d}.explanation 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small{font-size:11px}.page-title{font-size:34px;line-height:1.6}.source-warning{font-size:12px;line-height:1.9}.result-hero h1{font-size:29px;line-height:1.8}.top-stats .fire{color:#a0764f}.top-stats .xp{color:#78775f}
@media(max-width:1150px){.main{padding:30px 30px 40px}.study-routes{grid-template-columns:repeat(2,minmax(0,1fr))}.study-hero{padding:32px}.study-hero h2{font-size:33px}.study-art{width:145px}}
@media(max-width:720px){.sidebar{background:#efece4;border-top:1px solid #ddd7ca;border-right:0}.nav{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:0;width:100%}.nav button,.nav .classroom-nav{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;padding:9px 3px;font-size:9px;color:#7d7665;border-radius:9px}.nav button.active{background:#e5dac9;color:#78543c}.main{padding:22px 20px 102px}.topbar{margin-bottom:29px;gap:15px}.top-stats{gap:10px}.top-stat{font-size:10px}.breadcrumb{font-size:9px}.greeting h1{font-size:27px;line-height:1.7}.greeting p{font-size:13px}.study-hero{padding:28px 25px;position:relative;overflow:hidden}.study-hero h2{font-size:30px;margin:17px 0}.study-hero-copy{position:relative;z-index:1}.study-hero p{font-size:12px;max-width:245px;line-height:2}.study-art{position:absolute;width:115px;right:-9px;top:22px;opacity:.19}.hero-actions{gap:10px;flex-wrap:wrap}.hero-actions .primary{font-size:13px;padding:12px 15px}.hero-actions .secondary{font-size:12px;padding:12px 15px}.quiet-summary{gap:13px;font-size:10px;padding-bottom:25px}.quiet-summary button{font-size:10px;margin-left:0}.section-heading{gap:15px}.section-heading h2{font-size:21px}.subtle-link{font-size:11px}.study-routes{grid-template-columns:1fr;gap:13px}.study-route{padding:24px;display:grid;grid-template-columns:auto 1fr;gap:0 15px}.study-route h3{font-size:21px;margin:0 0 11px}.study-route small{grid-column:2}.study-route-actions{grid-column:2;margin-top:18px;padding-top:15px;font-size:12px}.route-icon{padding-top:7px}.question-card{padding:26px 19px}.prompt{font-size:23px;line-height:1.8}.option{font-size:18px;line-height:1.8;padding:16px 14px;gap:11px}.q-chapter{font-size:10px}.q-meta{margin-bottom:23px}.concept-links{margin-top:21px;gap:8px}.concept-links>span{width:100%}.concept-links a{font-size:11px}.question-source{font-size:10px;margin-bottom:24px}.quiz-label{line-height:1.8}.quiz-top .secondary{font-size:11px}.feedback{padding:20px 17px}.feedback h3{font-size:18px}.feedback p{font-size:17px;line-height:2}.explanation{padding:23px 18px}.explanation p{font-size:17px;line-height:2.1}.explanation-header{font-size:19px}.explanation .memory{padding:18px 15px}.explanation .memory p{font-size:16px}.explanation-more p{font-size:16px}.q-bottom{gap:18px}.q-bottom-left{gap:10px}.q-bottom-left .text-button{font-size:11px}.q-bottom .primary{font-size:13px}.report-toggle{font-size:10px}.chapter-card h3{font-size:21px}.chapter-card{padding:24px}.chapter-learn{font-size:12px}.chapter-foot{font-size:11px}.more-learning .secondary{font-size:12px}.page-title{font-size:30px}.subtitle{font-size:12px}.question-row p{font-size:17px}.question-row small{font-size:10px}.footer-line{line-height:1.9}.resume{font-size:12px;gap:15px}}
.option{text-align:left;align-items:flex-start}.option .letter{margin-top:3px}.option>.icon{margin-top:7px}