:root{font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#222738;background:#f7f8fb;font-size:16px;font-synthesis:none;--blue:#4855dc;--muted:#727b8d;--line:#e5e8f0;--green:#197e69;--radius:18px}*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button,a,input,textarea{touch-action:manipulation}button{cursor:pointer;border:0;background:none;color:inherit}button:disabled{cursor:wait;opacity:.55}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #92abff;outline-offset:3px}a{color:var(--blue)}svg{width:20px;height:20px;vertical-align:middle;stroke:currentColor;stroke-width:1.7;fill:none;stroke-linecap:round;stroke-linejoin:round}button svg{pointer-events:none}h1,h2,h3,p{margin:0}h1{font-size:clamp(30px,3.3vw,45px);line-height:1.14;letter-spacing:-1.65px;font-weight:650}h2{font-size:23px;letter-spacing:-.6px}h3{font-size:17px;letter-spacing:-.25px}p{line-height:1.75}small,.small{font-size:14px;line-height:1.6}.muted{color:var(--muted)}.label{font-size:12px;font-weight:700;letter-spacing:1.65px;text-transform:uppercase}.skip{position:fixed;top:-100px;left:20px;background:white;padding:12px;z-index:100}.skip:focus{top:10px}.loading{padding:15vh 10vw;font-size:38px;font-weight:700}.loading span{display:block;font-size:16px;font-weight:400;margin-top:16px}.sidebar{width:248px;position:fixed;inset:0 auto 0 0;background:#fff;border-right:1px solid var(--line);padding:32px 22px;z-index:30;display:flex;flex-direction:column}.brand{display:flex;gap:10px;align-items:center;font-size:27px;font-weight:740;letter-spacing:-1px;text-decoration:none;color:#232638}.brand img{height:35px;width:35px}.brand .beta{font-size:10px;letter-spacing:.6px;border:1px solid var(--line);padding:3px 5px;border-radius:4px;font-weight:600;color:var(--muted);margin-left:2px}.sidebar .workspace{font-size:12px;color:#959aab;margin:13px 0 34px 45px}.nav-link{display:flex;gap:12px;align-items:center;width:100%;padding:13px 14px;margin-bottom:6px;text-align:left;font-size:14px;border-radius:10px;color:#656b7d}.nav-link.active{background:#eff0fd;color:#444ed0;font-weight:650}.nav-link:hover{background:#f1f3fa}.sidebar .label{font-size:11px;color:#9297a8;margin:31px 14px 14px}.module-nav{padding:12px 8px;width:100%;display:flex;gap:11px;align-items:center;text-align:left;border-radius:9px;font-size:13px;line-height:1.45}.module-nav:hover,.module-nav.current{background:#f7f8fc}.module-num{width:26px;height:26px;display:grid;place-items:center;border-radius:8px;color:#9298a8;border:1px solid #e7e9ef;font-size:11px;flex-shrink:0}.module-nav.current .module-num{color:white;background:var(--blue);border-color:var(--blue)}.module-nav.current{font-weight:650;color:var(--blue)}.sidebar-bottom{margin-top:auto;padding-top:28px}.side-progress{background:#f7f8fc;border:1px solid var(--line);border-radius:12px;padding:16px;font-size:13px}.row{display:flex;align-items:center;justify-content:space-between;gap:12px}.bar{height:5px;border-radius:9px;background:#e8eaf2;overflow:hidden;margin:12px 0 9px}.bar>span{display:block;height:100%;background:var(--blue);border-radius:9px;transition:width .5s}.topbar{height:82px;background:#ffffffcc;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 40px;margin-left:248px;gap:16px}.breadcrumb{font-size:13px;color:#9197a6;display:flex;gap:13px;align-items:center}.breadcrumb b{color:#4c5365;font-weight:500}.top-actions{display:flex;gap:20px;align-items:center}.save-status{font-size:12px;color:#818a9a;display:flex;gap:7px;align-items:center}.save-status i{width:6px;height:6px;border-radius:50%;background:#6aa994}.avatar{height:36px;width:36px;border-radius:50%;background:#eaeaf7;color:#6060a4;font-size:13px;font-weight:650}.mobile-menu{display:none}.layout{margin-left:248px;padding:38px 34px 60px;max-width:1600px}.intro{display:flex;align-items:start;justify-content:space-between;margin-bottom:30px;gap:24px}.eyebrow{display:flex;gap:10px;align-items:center;color:var(--blue);margin-bottom:12px;font-size:12px;letter-spacing:1.1px;font-weight:650;text-transform:uppercase}.eyebrow span{background:#e8eafe;padding:5px 8px;border-radius:5px;font-size:10px}.intro p{font-size:15px;color:#7a8293;margin-top:13px;max-width:640px}.time-pill{display:flex;align-items:center;gap:7px;font-size:13px;white-space:nowrap;padding-top:6px;color:#747c8e}.main-grid{display:grid;grid-template-columns:minmax(0,1fr) 294px;gap:25px;align-items:start}.learning-panel{min-width:0;background:white;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 5px 20px #26316d03}.tabs{display:flex;border-bottom:1px solid var(--line);padding:0 28px;gap:27px;height:63px}.tab{display:flex;align-items:center;gap:8px;font-size:14px;color:#8b90a0;position:relative;padding:0 1px;white-space:nowrap}.tab.active{color:var(--blue);font-weight:650}.tab.active:after{content:'';position:absolute;bottom:-1px;left:0;right:0;height:3px;border-radius:4px;background:var(--blue)}.tab svg{width:17px;height:17px}.tab-check{width:16px;height:16px;border-radius:50%;font-size:10px;background:#e1f5ed;display:grid;place-items:center;color:var(--green)}.lesson-content{padding:32px 32px 26px;animation:appear .25s ease}.lesson-content section{margin:29px 0}.lesson-content section:first-child{margin-top:0}.lesson-content section p{margin-top:13px;color:#606879;font-size:15px;line-height:1.85}.goal-box{padding:18px 20px;background:#f4f5fe;border:1px solid #e9eafa;border-radius:10px;margin-bottom:28px;display:flex;gap:14px;align-items:start}.goal-box svg{color:var(--blue);flex-shrink:0;margin-top:2px}.goal-box p{font-size:14px;color:#646d8a;line-height:1.65;margin-top:5px}.goal-box strong{font-size:14px;color:#414c8c;font-weight:650}.code-block{background:#202638;color:#dde6fa;border-radius:12px;overflow:hidden;margin:24px 0}.code-title{padding:12px 17px;font-size:11px;border-bottom:1px solid #ffffff10;display:flex;align-items:center;justify-content:space-between;color:#9ba7c3}.dots{display:flex;gap:5px}.dots i{width:6px;height:6px;background:#596078;border-radius:50%}.code-block pre{font-family:"SFMono-Regular",Consolas,monospace;font-size:13px;line-height:1.9;white-space:pre-wrap;overflow-wrap:anywhere;margin:0;padding:20px}.tip{display:flex;gap:13px;background:#fff9ee;border:1px solid #f5ebd8;padding:17px;border-radius:10px;font-size:13px;color:#8f7550;line-height:1.65}.tip svg{flex-shrink:0;margin-top:2px}.panel-footer{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding:20px 30px;gap:12px;background:#fcfcfe}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:12px 17px;border-radius:9px;font-size:14px;font-weight:600;background:white;border:1px solid #dfe3ee;text-decoration:none;line-height:1.35}.btn:hover{background:#f5f6fd}.btn.primary{background:var(--blue);color:white;border-color:var(--blue);box-shadow:0 3px 8px #4855dc19}.btn.primary:hover{background:#3b45c1}.btn.ghost{border:0;color:#787f91;background:transparent;padding:9px 0}.btn.compact{padding:8px 12px;font-size:13px}.tutor-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.tutor-header{padding:20px 20px 0}.tutor-header h3{font-size:16px}.status{font-size:11px;color:#858c9b;display:flex;gap:5px;align-items:center}.status i{height:5px;width:5px;border-radius:50%;background:#4da990}.scene{height:240px;position:relative;background:radial-gradient(ellipse at 50% 63%,#e9eeff 0%,#f6f8ff 43%,white 72%);margin-top:4px}.scene canvas{display:block;width:100%;height:100%}.scene:after{content:'A R I';position:absolute;bottom:12px;left:0;right:0;text-align:center;font-size:10px;letter-spacing:4px;color:#989db3;pointer-events:none}.scene-error{font-size:13px;text-align:center;padding:60px 20px;color:#737c92}.tutor-body{padding:0 18px 20px}.speech{border-radius:12px;background:#f5f6fb;padding:15px;color:#616a80;font-size:13px;line-height:1.7}.speech b{color:#343d55;display:block;margin-bottom:5px;font-weight:600}.tutor-shortcuts{display:flex;flex-wrap:wrap;gap:6px;margin:14px 0}.chip{border:1px solid #e4e7f0;border-radius:7px;padding:7px 9px;font-size:11px;color:#727b91;background:white}.chip:hover{border-color:#8690e5;color:var(--blue)}.chat-form{display:flex;gap:5px;border:1px solid #dfe3ee;border-radius:9px;padding:5px 5px 5px 11px;background:white}.chat-form input{width:100%;min-width:0;border:0;outline:0;font-size:12px;background:transparent;padding:5px 0}.chat-form button{width:30px;height:30px;background:var(--blue);border-radius:6px;color:white;flex-shrink:0}.chat-form svg{width:16px;height:16px}.chat-log{max-height:330px;overflow:auto;scrollbar-width:thin}.chat-message{white-space:pre-wrap;font-size:13px;line-height:1.75;padding:13px 0;border-bottom:1px solid var(--line);overflow-wrap:anywhere}.chat-message.user{color:var(--blue);font-weight:500}.chat-message.ai{color:#606a80}.tutor-note{font-size:10px;color:#9299a8;line-height:1.6;margin-top:10px}.voice-controls{display:flex;justify-content:center;gap:14px;margin:8px 0 13px}.voice-controls button{font-size:12px;color:#747f99;display:flex;align-items:center;gap:5px}.voice-controls svg{width:14px;height:14px}.path-card{margin-top:19px;background:white;border:1px solid var(--line);border-radius:var(--radius);padding:21px}.path-card .label{font-size:10px;color:#8b94a8}.checklist{margin:16px 0 0;padding:0;list-style:none}.checklist li{font-size:12px;color:#858da0;display:flex;gap:9px;align-items:center;margin:12px 0}.checklist i{font-style:normal;width:17px;height:17px;border-radius:50%;border:1px solid #dfe4ed;display:grid;place-items:center;font-size:10px}.checklist li.done{color:var(--green)}.checklist li.done i{background:#e7f6ef;border-color:#b5ddce}.bottom-hint{text-align:center;margin:23px 0;font-size:12px;color:#9ba2b2}.editor-wrap{border:1px solid #313b52;background:#202638;border-radius:11px;overflow:hidden;margin:21px 0}.editor-header{display:flex;align-items:center;justify-content:space-between;padding:11px 15px;border-bottom:1px solid #ffffff12;color:#a9b3c9;font:12px monospace}.editor-header button{color:#b6bfd5;font-size:11px}.editor-wrap textarea{display:block;width:100%;min-height:280px;resize:vertical;padding:20px;border:0;border-radius:0;background:transparent;color:#e0e9ff;font:13px/1.85 "SFMono-Regular",Consolas,monospace;tab-size:2;outline-offset:-4px}.lab-actions{display:flex;gap:9px;flex-wrap:wrap}.output{background:#f5f7fc;padding:17px;border-radius:10px;margin:18px 0;font:13px/1.8 monospace;white-space:pre-wrap;overflow-wrap:anywhere;color:#627089}.output:empty{display:none}.feedback{padding:18px;border:1px solid #d7e5ef;border-radius:12px;background:#f4f8fc;margin-top:18px;line-height:1.75;font-size:14px}.feedback.success{border-color:#cce8dc;background:#f0faf5;color:#2b7058}.feedback.error{border-color:#f0d8d1;background:#fff7f4;color:#9b5b4b}.feedback strong{display:block;margin-bottom:6px}.feedback ul{padding-left:18px}.question{border-bottom:1px solid var(--line);padding:22px 0}.question legend{font-size:15px;font-weight:600;margin-bottom:14px;line-height:1.6}.question fieldset{border:0;padding:0;margin:0}.option{display:flex;align-items:center;gap:12px;padding:12px 13px;border:1px solid #e4e7ef;border-radius:8px;margin:8px 0;font-size:14px;cursor:pointer;color:#687186}.option:has(input:checked){background:#f1f2ff;border-color:#aab0ef;color:#3b459c}.option input{accent-color:var(--blue)}.oral{margin-top:32px;border-top:1px solid var(--line);padding-top:26px}.oral p{margin-top:10px;font-size:14px;color:#727b8e}.text-input{width:100%;border:1px solid #dfe3ee;border-radius:10px;padding:14px;font:14px/1.7 inherit;background:white;color:#35415b;resize:vertical;margin:15px 0}.oral textarea{min-height:160px}.module-block{margin-bottom:27px}.module-block h3{margin-bottom:13px}.lesson-list{display:grid;gap:8px}.lesson-row{width:100%;border:1px solid var(--line);border-radius:11px;padding:16px;display:flex;align-items:center;gap:14px;text-align:left;background:white}.lesson-row:hover{border-color:#a9b0eb;box-shadow:0 3px 9px #34418108}.lesson-row .n{font-size:12px;color:#8b94a7;font-family:monospace}.lesson-row .body{flex:1}.lesson-row strong{font-size:14px;display:block;font-weight:550}.lesson-row small{font-size:12px;color:#9ba2b3;display:block;margin-top:5px}.lesson-row .done-label{font-size:11px;color:var(--green)}.view-title{margin-bottom:28px}.view-title p{color:var(--muted);margin-top:12px;font-size:15px}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:25px}.stat{background:#fff;border:1px solid var(--line);border-radius:13px;padding:22px}.stat b{display:block;font-size:29px;font-weight:600;letter-spacing:-1px;margin:8px 0}.stat span{font-size:12px;color:#8b94a7}.history-item{padding:16px 0;border-bottom:1px solid var(--line);font-size:14px;line-height:1.7}.history-item summary{cursor:pointer}.history-item p{font-size:13px;margin:12px 0;color:#737d92}.certificate{position:relative;background:#fff;border:1px solid #dfe3ef;border-radius:18px;padding:48px;max-width:900px;min-height:420px;overflow:hidden}.certificate:before{content:'';display:block;height:5px;background:var(--blue);position:absolute;top:0;left:0;right:0}.certificate h2{font-size:36px;margin:28px 0 16px}.certificate p{color:#7b8496;max-width:600px;font-size:15px}.certificate .seal{float:right;width:80px;height:80px;border:1px solid #c5cced;border-radius:50%;display:grid;place-items:center;background:#f3f5ff;color:var(--blue)}.certificate .seal svg{width:37px;height:37px}dialog{border:1px solid var(--line);border-radius:20px;padding:28px;width:min(500px,calc(100% - 32px));color:#27314a;box-shadow:0 30px 150px #141c4c30}dialog::backdrop{background:#18223b55;backdrop-filter:blur(5px)}dialog h2{margin-bottom:14px}dialog p{font-size:14px;color:var(--muted)}dialog label{display:block;font-size:14px;margin-top:18px}dialog input{margin-top:7px}dialog .row{margin-top:15px}.profile-note{font-size:12px!important;margin-top:16px}#toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%,15px);background:#26314b;color:white;padding:13px 20px;border-radius:10px;z-index:90;max-width:min(560px,90vw);font-size:14px;opacity:0;pointer-events:none;transition:.2s}#toast.show{opacity:1;transform:translate(-50%,0)}.notes-btn{font-size:13px}.desktop-only{display:initial}.exercise-instruction{font-size:15px;color:#65718a;margin-top:13px}.review-label{font-size:12px;background:#f1f4fb;color:#7888a9;display:inline-block;padding:7px 10px;border-radius:6px;margin-top:12px}.course-filter{display:flex;gap:8px;margin-bottom:25px;flex-wrap:wrap}.course-filter button{padding:8px 12px;border:1px solid var(--line);background:white;border-radius:7px;font-size:12px}.course-filter button.active{background:#eef0ff;color:var(--blue);border-color:#bfc5f4}.source-link{font-size:12px;color:#8793af}.failure-page{max-width:600px;margin:15vh auto;padding:30px}.failure-page p{margin:20px 0}.progress-layout{max-width:950px}.inline-notice{font-size:12px;line-height:1.7;color:#969daf;margin-top:12px}.next-lesson{margin-top:24px;width:100%}.quiz-submit{margin-top:20px}@keyframes appear{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@media(min-width:1550px){.layout{padding:44px 55px}.main-grid{grid-template-columns:minmax(0,1fr) 320px;gap:30px}.lesson-content{padding:35px 42px}.scene{height:270px}}@media(max-width:1180px){.sidebar{width:210px;padding:28px 15px}.layout,.topbar{margin-left:210px}.layout{padding:28px 23px}.topbar{padding:0 24px}.main-grid{grid-template-columns:minmax(0,1fr) 260px;gap:18px}.lesson-content{padding:26px 23px}.scene{height:210px}.tabs{gap:20px;padding:0 23px}.intro{margin-bottom:25px}.time-pill{display:none}}@media(max-width:960px){.sidebar{width:195px}.layout,.topbar{margin-left:195px}.main-grid{grid-template-columns:minmax(0,1fr)}.tutor-column{display:grid;grid-template-columns:1fr 1fr;gap:18px}.path-card{margin:0;height:fit-content}.tutor-card .scene{height:180px}.tutor-card{max-width:none}.intro h1{font-size:36px}.sidebar .workspace{margin-left:0}.breadcrumb{font-size:12px}.save-status{display:none}}@media(max-width:650px){.sidebar{transform:translateX(-100%);transition:.2s;width:265px;box-shadow:15px 0 60px #24315b20}.sidebar.open{transform:none}.sidebar.open:after{content:'';position:fixed;left:265px;top:0;width:calc(100vw - 265px);height:100vh;background:#19213c55}.sidebar-bottom{padding-top:15px}.topbar{margin-left:0;height:65px;padding:0 18px}.mobile-menu{display:block}.top-actions{gap:10px}.breadcrumb{flex:1;gap:7px}.breadcrumb .desktop-only{display:none}.layout{margin:0;padding:25px 16px 40px}.intro h1{font-size:32px;letter-spacing:-1px}.intro p{font-size:14px;line-height:1.6;margin-top:11px}.eyebrow{font-size:10px;gap:7px}.eyebrow span{font-size:9px}.intro{margin-bottom:23px}.main-grid{gap:20px}.tabs{height:59px;padding:0 18px;gap:22px}.tab{font-size:13px;gap:6px}.tab svg{width:15px;height:15px}.lesson-content{padding:23px 20px}.lesson-content section p{font-size:15px;line-height:1.8}.lesson-content h2{font-size:22px}.goal-box{padding:15px;margin-bottom:24px}.goal-box p{font-size:13px}.panel-footer{padding:16px 20px}.panel-footer .btn{font-size:13px;padding:11px}.panel-footer .btn.ghost{font-size:12px}.tutor-column{display:flex;flex-direction:column}.tutor-header{padding:18px 20px 0}.scene{height:230px!important}.tutor-card .speech{font-size:14px}.tutor-card .chip,.tutor-card .chat-form input{font-size:13px}.tutor-card .tutor-note{font-size:11px}.tutor-body{padding:0 20px 20px}.path-card{display:none}.stats-grid{gap:8px}.stat{padding:15px 12px}.stat b{font-size:25px}.stat .small{font-size:12px}.certificate{padding:30px 23px}.certificate .seal{float:none;width:62px;height:62px;margin-bottom:20px}.certificate h2{font-size:28px}.lesson-row{padding:14px 12px}.lesson-row strong{font-size:13px}.code-block pre{font-size:12px}.editor-wrap textarea{font-size:13px;padding:15px}.text-input{font-size:16px!important}.chat-form input{font-size:16px!important}.bottom-hint{font-size:11px}.lab-actions .btn{flex:1}.lesson-content .oral h2{font-size:21px}.profile-note{font-size:12px}.source-link{display:block;max-width:140px}.panel-footer .source-link{font-size:11px}.lesson-content>p{font-size:14px}.tutor-card{scroll-margin-top:15px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}@media print{.sidebar,.topbar,.tutor-column,.view-title,.certificate-actions,.bottom-hint,#toast{display:none!important}.layout{margin:0;padding:0}.certificate{border:2px solid #eee;min-height:600px;width:100%;padding:60px}.certificate h2{font-size:42px}.certificate:before{height:8px}body{background:white}}
/* Readable type and touch targets across devices. */
.lesson-content section p,.exercise-instruction{font-size:16px}.module-nav,.checklist li,.speech,.chip,.chat-message,.chat-form input,.voice-controls button{font-size:14px}.tutor-note,.eyebrow span,.label,.sidebar .label,.path-card .label,.code-title,.dots,.brand .beta,.scene:after,.sidebar .workspace,.time-pill,.save-status,.module-num{font-size:12px}.chip{min-height:36px}.voice-controls button{min-height:36px}.chat-form button{width:38px;height:38px}.tutor-note{font-size:12px}.mobile-menu,.avatar{min-width:44px;min-height:44px}.chat-form input{font-size:14px}.tutor-shortcuts{gap:8px}.tab:focus-visible{outline-offset:-5px}
@media(max-width:650px){.chip{min-height:44px}.tab{min-height:44px}.voice-controls button{font-size:14px}.lesson-content section p{font-size:16px}.tutor-card .tutor-note{font-size:12px}.module-nav{padding:13px 8px}.sidebar{overflow-y:auto}.sidebar .workspace{margin-bottom:20px}.sidebar .label{margin-top:18px}.brand .beta{font-size:10px}.eyebrow{font-size:12px}.eyebrow span{font-size:10px}.label{font-size:12px}}

/* Expanded study material: readable steps, retrieval practice and source links. */
.sidebar{overflow-y:auto;overscroll-behavior:contain}.sidebar>*{flex-shrink:0}.sidebar .workspace{margin-bottom:22px}.sidebar .label{margin-top:24px}.module-nav{padding:9px 7px}.prerequisite{border-bottom:1px solid var(--line);padding:0 0 20px;margin-bottom:22px}.prerequisite span{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}.prerequisite button{font-size:14px;color:var(--blue);padding:0;text-align:left;line-height:1.6}.study-index{display:grid;gap:10px;padding:20px;border:1px solid var(--line);border-radius:12px;background:#fcfcfe;margin-bottom:32px}.study-index>span{font-size:12px;text-transform:uppercase;letter-spacing:1px;font-weight:700;color:var(--muted);margin-bottom:2px}.study-index a{font-size:14px;text-decoration:none;line-height:1.5}.study-index a:hover{text-decoration:underline}.lesson-content section{scroll-margin-top:25px}.walkthrough{border-left:3px solid #c8cef8;padding:2px 0 2px 20px}.walkthrough h3{font-size:15px}.walkthrough ol,.practice-plan ol{padding-left:20px;margin-bottom:0}.walkthrough li,.practice-plan li{padding:0 0 12px 4px;line-height:1.8;font-size:15px;color:#596274}.glossary dl{background:#f7f8fc;border-radius:12px;padding:20px}.glossary dt{font-weight:650;margin-bottom:6px}.glossary dd{margin:0;line-height:1.8;color:#596274;font-size:15px}.warmups{border-top:1px solid var(--line);padding-top:28px}.warmup{margin-top:20px;border:1px solid #dce2ef;border-radius:12px;padding:20px}.warmup h3{font-size:16px;line-height:1.7}.warmup details{margin-top:16px}.warmup summary,.practice-plan summary{cursor:pointer;color:var(--blue);font-size:14px;line-height:1.6}.readings{border-top:1px solid var(--line);padding-top:28px}.readings>p{font-size:13px!important}.readings>a{display:block;padding:17px 18px;border:1px solid #dce2ef;border-radius:10px;margin-top:14px;text-decoration:none}.readings>a:hover{background:#f5f6ff;border-color:#bac4ef}.readings strong{display:block;font-size:15px;line-height:1.6}.readings span{display:block;color:#616b7f;font-size:14px;line-height:1.7;margin-top:5px}.environment-note{font-size:13px!important;line-height:1.7;color:#63708a;padding:14px 16px;background:#f4f6fc;border-radius:9px;margin:18px 0 12px}.practice-plan{margin:0 0 20px;padding:10px 0}.course-filter{gap:7px}.module-block .row h3{line-height:1.5}.chat-message{white-space:pre-wrap}
@media(max-width:650px){.study-index{padding:17px}.study-index a{padding:3px 0}.walkthrough{padding-left:15px}.warmup{padding:17px}.prerequisite button{min-height:44px}.warmup summary,.practice-plan summary{padding:10px 0}.module-nav{min-height:44px}.readings>a{overflow-wrap:anywhere}}