:root{--paper:#fff;--surface:#fff;--ink:#242a2e;--muted:#666e74;--line:#e1e5e7;--accent:#246b5b;--pale:#eef5f1;--nav:#173743;--wrong:#ab4338;--wrong-bg:#fff0ec;--gold:#926318;--gold-bg:#fff3d8;--radius:6px}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}button,input,select{font:inherit}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer}button:disabled{opacity:.42;cursor:default}button,a,input,summary{touch-action:manipulation}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible,select:focus-visible{outline:3px solid #dbaf42;outline-offset:3px}button:focus:not(:focus-visible){outline:none}h1,h2,h3,p{margin-top:0}h1{font-size:32px;line-height:1.4;margin-bottom:12px;letter-spacing:.5px}h2{font-size:24px;line-height:1.5;margin-bottom:12px}h3{font-size:18px;line-height:1.6}small{font-size:13px}.app-shell{display:grid;grid-template-columns:224px minmax(0,1fr);min-height:100vh}.sidebar{background:var(--nav);color:white;position:sticky;top:0;height:100vh;padding:28px 20px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:12px;color:white;font-size:21px;font-weight:700;line-height:1.5;margin-bottom:38px;white-space:nowrap}.brand:hover{text-decoration:none}.brand small{display:block;font-size:12px;font-weight:400;color:#b8d0d1;margin-top:4px}.brand-mark{background:#335b63;border:1px solid #6c8c91;border-radius:10px;width:38px;height:44px;display:grid;place-items:center;font:600 24px Georgia,serif;flex:none}.sidebar nav{display:grid;gap:5px}.nav-link{color:#d3e4e5;display:flex;align-items:center;justify-content:space-between;padding:11px 13px;border-radius:8px;font-size:15px}.nav-link:hover,.nav-link.active{background:#32555e;text-decoration:none;color:white}.nav-link span{font-size:12px;color:#bdd4d5}.nav-divider{border-top:1px solid #ffffff25;margin:18px 10px}.sidebar-note{margin-top:auto;font-size:14px;color:#c5dada;padding:22px 12px}.sidebar-note div{margin-top:20px;font-size:12px;color:#9fbcbf}.main-shell{min-width:0}.site-header{height:70px;padding:0 40px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);font-size:14px;gap:15px}.header-meta{color:var(--muted)}main{max-width:1300px;margin:0 auto;padding:38px 40px 65px;min-height:calc(100vh - 145px)}.site-footer{max-width:1300px;margin:auto;padding:0 40px 24px;color:var(--muted);font-size:12px}.page-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:30px}.page-head p{color:var(--muted);margin:0}.eyebrow{font-size:13px;letter-spacing:1.6px;color:var(--accent);font-weight:600;margin:0 0 9px}.muted{color:var(--muted)}.small{font-size:14px}.button{border:1px solid var(--line);border-radius:8px;padding:9px 17px;background:var(--surface);color:var(--ink);display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:44px;font-size:15px;line-height:1.5;text-align:center}.button:hover{border-color:var(--accent);background:var(--pale);text-decoration:none}.button.primary{background:var(--accent);border-color:var(--accent);color:#fff}.button.primary:hover{background:#08695f}.button.quiet{background:transparent}.button.danger{color:var(--wrong)}.actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.badge{display:inline-flex;align-items:center;font-size:13px;padding:3px 9px;border-radius:3px;background:var(--pale);color:var(--accent)}.paper-note{font-size:12px;color:var(--muted);margin:7px 0 0}.work-head{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:22px}.work-title h1{font-size:24px;margin:6px 0 0}.work-title .small{color:var(--muted)}.timebox{text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums}.timebox strong{font:600 29px/1.4 ui-monospace,monospace;display:block}.timebox small{color:var(--muted)}.timebox.urgent strong{color:var(--wrong)}.work-grid{display:grid;grid-template-columns:minmax(0,1fr) 242px;gap:22px;align-items:start}.question-column{min-width:0}.question-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px}.question-meta{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:18px;font-size:14px}.question-meta .actions{gap:8px}.flag-btn{border:0;background:transparent;color:var(--muted);font-size:14px;padding:5px}.flag-btn.flagged{color:var(--gold)}.stem{font-size:18px;line-height:1.9;white-space:pre-wrap;margin-bottom:24px;font-weight:500}.option-list{display:grid;gap:12px}.option{position:relative;display:flex;gap:13px;align-items:flex-start;padding:14px 16px;background:var(--surface);border:1px solid var(--line);border-radius:9px;cursor:pointer;line-height:1.8;transition:background .1s,border-color .1s}.option:hover{border-color:#77afa3;background:#f5faf6}.option.selected{border-color:var(--accent);background:var(--pale)}.option input{width:18px;height:18px;accent-color:var(--accent);flex:none;margin:5px 0 0}.option .letter{font-weight:700;flex:none}.option.correct{border-color:var(--accent);background:var(--pale)}.option.incorrect{border-color:#d5a59d;background:var(--wrong-bg)}.option.disabled{cursor:default}.option .option-result{font-size:12px;display:block;color:var(--accent);font-weight:500}.option.incorrect .option-result{color:var(--wrong)}.question-actions{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:25px;padding-top:22px;border-top:1px solid var(--line)}.question-actions>.actions{justify-content:flex-end}.case-panel{margin-bottom:18px;background:#edf3f0;border:1px solid #ccdcd4;border-radius:var(--radius);overflow:hidden}.case-panel summary{font-weight:600;padding:15px 21px;cursor:pointer;line-height:1.6}.case-content{padding:0 22px 19px;max-height:320px;overflow:auto;overscroll-behavior:contain;white-space:pre-wrap;line-height:1.95;font-size:16px}.case-hint{font-size:12px;color:var(--muted);font-weight:400;display:block}.answer-sheet{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;position:sticky;top:18px}.answer-sheet>summary{font-size:17px;font-weight:600;list-style:none;cursor:pointer}.answer-sheet>summary::after{content:'−';float:right;color:var(--muted)}.answer-sheet:not([open])>summary::after{content:'＋'}.sheet-group h3{font-size:13px;color:var(--muted);font-weight:500;margin:15px 0 8px}.number-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:7px}.number-btn{border:1px solid var(--line);height:31px;border-radius:5px;background:var(--surface);color:var(--ink);font:14px ui-monospace,monospace;position:relative}.number-btn.answered{background:#edf2fa;border-color:#aebfd8;color:#3d587d}.number-btn.current{outline:2px solid var(--accent);outline-offset:1px;font-weight:700}.number-btn.flagged::after{content:'';width:7px;height:7px;border-radius:50%;background:#b37b1a;position:absolute;top:-2px;right:-2px}.number-btn.correct{background:var(--pale);border-color:#8fbdab;color:var(--accent)}.number-btn.incorrect{background:var(--wrong-bg);border-color:#dcaca4;color:var(--wrong)}.sheet-legend{font-size:12px;color:var(--muted);line-height:1.9;margin:17px 0}.answer-sheet .button{width:100%;margin-top:5px}.save-status{font-size:12px;color:var(--muted);margin-top:14px}.explanation{margin-top:26px;padding-top:25px;border-top:1px solid var(--line);line-height:1.9}.answer-summary{display:flex;flex-wrap:wrap;gap:9px 22px;align-items:center;font-size:16px;font-weight:650;margin-bottom:17px}.answer-summary .right{color:var(--accent)}.answer-summary .wrong{color:var(--wrong)}.explanation h3{font-size:16px;margin:20px 0 7px}.explanation p{white-space:pre-wrap;font-size:16px}.option-notes{padding:0;list-style:none}.option-notes li{padding:9px 0;border-bottom:1px solid #e7ebe5;font-size:15px}.option-notes b{display:inline-block;min-width:24px}.source-details{font-size:13px;color:var(--muted);margin-top:20px}.source-details summary{cursor:pointer}.source-details p{font-size:13px;margin:8px 0}.result-summary{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:30px;display:flex;align-items:center;gap:40px;margin-bottom:24px}.score-big{font:600 65px/1.1 ui-monospace,monospace;color:var(--accent);white-space:nowrap}.score-big small{font:16px/1.5 sans-serif;color:var(--muted)}.result-stats{display:flex;gap:32px;flex-wrap:wrap}.result-stats strong{display:block;font-size:24px}.result-stats span{font-size:14px;color:var(--muted)}.result-table{border-collapse:collapse;width:100%;font-size:15px;margin:24px 0}.result-table th,.result-table td{border-bottom:1px solid var(--line);padding:13px 15px;text-align:left}.result-table th{color:var(--muted);font-weight:500}.result-table-wrap{overflow:auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:0 16px}.review-toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin:24px 0}.review-toolbar select{border:1px solid var(--line);border-radius:8px;padding:8px 12px;background:var(--surface);color:var(--ink)}.result-list{display:grid;gap:9px}.result-row{display:flex;align-items:center;gap:14px;text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:9px;padding:15px 18px;color:var(--ink)}.result-row .result-topic{flex:1;min-width:0}.result-row .result-topic small{display:block;color:var(--muted)}.state-label{font-size:13px;color:var(--accent);white-space:nowrap}.state-label.wrong{color:var(--wrong)}.empty-state{text-align:center;padding:60px 24px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}.empty-state h2{font-size:23px}.empty-state p{color:var(--muted)}.loading{padding:60px 20px;color:var(--muted)}#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:100;background:var(--nav);color:white;padding:10px 20px;border-radius:9px;font-size:14px;max-width:90vw;display:none}dialog{border:1px solid var(--line);border-radius:16px;padding:0;background:var(--surface);color:var(--ink);max-width:480px;width:calc(100% - 36px)}dialog::backdrop{background:#19344466;backdrop-filter:blur(3px)}.dialog-body{padding:30px}.dialog-body p{color:var(--muted);line-height:1.9}.dialog-body .actions{justify-content:flex-end;margin-top:25px}.skip-link{position:fixed;top:-100px;left:20px;background:white;z-index:200;padding:12px}.skip-link:focus{top:10px}.session-notice{font-size:14px;padding:12px 16px;background:var(--gold-bg);color:var(--gold);border-radius:8px;margin-bottom:20px}.review-back{margin-bottom:18px}.full-width{width:100%}
@media(max-width:1180px){.app-shell{grid-template-columns:195px minmax(0,1fr)}.sidebar{padding:24px 14px}.brand{font-size:19px;gap:8px}.brand-mark{width:32px;height:38px}.brand small{font-size:12px}main{padding:30px 26px 55px}.site-header{padding:0 26px}.work-grid{grid-template-columns:minmax(0,1fr) 210px;gap:16px}.answer-sheet{padding:15px}.number-grid{gap:5px}.paper-card{padding:23px}.question-card{padding:23px}}
@media(max-width:920px){.work-grid{display:flex;flex-direction:column}.question-column{width:100%}.answer-sheet{width:100%;position:static;order:-1}.number-grid{grid-template-columns:repeat(10,minmax(0,1fr))}.answer-sheet .button{width:auto}.paper-grid{gap:15px}.paper-specs{gap:15px}.paper-card .actions>.button{flex:1}.support-row{grid-template-columns:1fr;gap:20px}.result-summary{gap:25px}}
@media(max-width:720px){.app-shell{display:block}.sidebar{position:static;height:auto;padding:16px 16px 10px}.brand{margin:0 0 14px;font-size:21px}.brand small{display:inline;font-size:12px;margin-left:8px}.brand-mark{width:31px;height:35px;font-size:21px}.sidebar nav{display:flex;overflow:auto;gap:6px;padding-bottom:3px}.nav-link{white-space:nowrap;font-size:14px;padding:8px 11px}.nav-link span{margin-left:10px}.nav-divider,.sidebar-note{display:none}.site-header{height:48px;padding:0 18px;font-size:13px}main{padding:25px 17px 45px}.site-footer{padding:0 18px 20px}h1{font-size:27px}.page-head{margin-bottom:23px;display:block}.page-head>.actions{margin-top:18px}.paper-grid{grid-template-columns:1fr;gap:19px}.paper-card{padding:22px}.paper-card h2{margin-top:15px}.paper-specs{gap:28px}.paper-number{font-size:42px}.work-head{align-items:flex-start;gap:12px}.work-title h1{font-size:21px}.timebox strong{font-size:22px}.timebox small{font-size:12px}.question-card{padding:20px 17px}.stem{font-size:17px;line-height:1.9}.option{padding:12px;gap:10px;font-size:16px}.question-meta{gap:6px}.question-meta .badge{font-size:12px}.question-actions{align-items:stretch;gap:10px;flex-wrap:wrap}.question-actions>.actions{flex:1;gap:7px}.question-actions .button{padding:9px 12px}.case-content{font-size:16px;max-height:250px;padding:0 16px 18px}.case-panel summary{padding:14px 16px;font-size:16px}.result-summary{align-items:flex-start;flex-direction:column;gap:22px;padding:24px}.score-big{font-size:56px}.result-stats{gap:24px}.result-row{padding:13px 12px;gap:10px}.result-topic{font-size:15px}.result-row>span:first-child{font-size:14px}.review-toolbar{align-items:flex-start}.review-toolbar .actions{gap:6px}.result-table th,.result-table td{padding:12px 8px}.number-grid{gap:6px}.number-btn{height:34px;font-size:13px}.flag-btn{font-size:13px}.explanation p{font-size:16px}.paper-card .actions{gap:10px}.header-meta{font-size:12px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}@media print{.sidebar,.site-header,.site-footer,.answer-sheet,.question-actions,.flag-btn,.actions,#toast{display:none!important}.app-shell{display:block}main{padding:0}.question-card,.case-panel{border:0}.case-content{max-height:none;overflow:visible}.work-grid{display:block}.case-panel>summary~*{display:block!important}body{background:white;color:#111}a{color:inherit}}

.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.option-list{border:0;padding:0;margin:0}.question-type{display:flex;gap:12px;align-items:center;margin-bottom:17px;flex-wrap:wrap}.paper-result{display:flex;gap:10px;justify-content:space-between;align-items:center;margin-top:17px;font-size:14px;flex-wrap:wrap}.text-button{background:none;border:0;padding:0;color:var(--accent);font:inherit;min-height:30px}.practice-progress{margin:11px 0 0}.review-reading{max-width:950px;margin:auto}.mistake-section{margin-bottom:38px}

@media(min-width:921px){.answer-sheet{max-height:calc(100vh - 36px);overflow-y:auto;scrollbar-width:thin}}

/* Exam directory and reading-focused chrome. */
.app-shell{grid-template-columns:204px minmax(0,1fr)}
.sidebar{background:#f7f8f8;color:var(--ink);border-right:1px solid var(--line);padding:28px 16px}
.brand{color:var(--ink);font-size:20px;gap:10px;margin-bottom:30px}.brand small{color:var(--muted);font-size:12px}.brand-mark{width:32px;height:36px;font-size:22px;border:0;border-radius:4px;background:var(--accent);color:white}
.nav-link{color:#50585f;border-radius:5px;padding:10px 12px;font-size:14px}.nav-link:hover,.nav-link.active{background:#e9efec;color:#215d4f}.nav-link.active{font-weight:600}.nav-link span{color:var(--muted)}.nav-divider{border-color:var(--line);margin:16px 10px}.sidebar-note{color:var(--muted);font-size:12px;line-height:1.9;padding:22px 12px}.site-header{height:56px;padding:0 36px;font-size:13px}.header-meta{font-size:12px}main{max-width:1320px;padding:32px 36px 50px;min-height:calc(100vh - 110px)}.site-footer{padding:0 36px 22px}
.page-head{margin-bottom:28px}h1{font-size:28px;letter-spacing:0;margin-bottom:8px}.page-head p{font-size:14px}.eyebrow{letter-spacing:0}.button{border-radius:5px;font-size:14px;padding:9px 16px}.button.primary:hover{background:#1f5e4f}.option{border-radius:5px}.option.selected{background:#f0f4fa;border-color:#6c87ac}.option.correct{background:var(--pale);border-color:var(--accent)}.option.incorrect{background:var(--wrong-bg);border-color:#d5a59d}.option input{accent-color:#4c7094}
.paper-list{border-top:1px solid var(--line)}.paper-row{display:grid;grid-template-columns:32px minmax(190px,1fr) 176px 132px;gap:20px;align-items:center;padding:25px 0;border-bottom:1px solid var(--line)}.paper-index{font:15px ui-monospace,monospace;color:#7c858a;align-self:start;padding-top:7px}.paper-info h2{font-size:22px;margin:0 0 7px;font-weight:650;display:flex;gap:12px;align-items:center}.new-label,.edition-label{font-size:11px;padding:2px 6px;font-weight:500;background:var(--pale);color:var(--accent);border-radius:3px}.edition-label{color:var(--muted);background:#f1f3f4}.paper-description{font-size:13px;color:#61696e;line-height:1.7;margin:0}.paper-progress{font-size:13px;line-height:1.8;font-variant-numeric:tabular-nums}.paper-progress strong{font-weight:600}.paper-progress small{display:block;font-size:12px;color:var(--muted)}.practice-count{margin-top:8px;color:var(--muted)}.paper-actions{display:grid;gap:8px}.paper-actions .button{width:100%}.paper-help{font-size:13px;color:var(--muted);padding:20px 0 24px}.paper-help p{margin:0 0 10px;line-height:1.9}.paper-help strong{font-weight:600;color:#414b50;margin-right:6px}.paper-help strong:not(:first-child){margin-left:18px}.paper-help summary{cursor:pointer;width:fit-content;color:#4c575d}.paper-help details[open] p{margin:10px 0 0;max-width:850px}.resource-links{display:flex;gap:24px;border-top:1px solid var(--line);padding-top:22px}.resource-links>a{flex:1;display:flex;gap:12px;align-items:center;font-size:14px}.resource-links span{font-size:12px;color:var(--muted)}.resource-links b{margin-left:auto;font-weight:400}.result-row{border-radius:5px}.review-toolbar h2{font-size:21px}.timebox strong{font-size:26px}.sheet-legend{line-height:1.8}.answer-sheet>summary{font-size:15px}.case-panel{background:#f6f8f7}.stem{font-weight:400}.case-content{scrollbar-width:thin}.number-btn{border-radius:3px}
@media(max-width:1180px){.app-shell{grid-template-columns:180px minmax(0,1fr)}.sidebar{padding:24px 12px}.brand{font-size:18px;gap:8px}.brand-mark{width:29px;height:33px}main{padding:28px 26px 50px}.site-header{padding:0 26px}.paper-row{grid-template-columns:24px minmax(170px,1fr) 152px 120px;gap:14px}.paper-info h2{font-size:21px}}
@media(max-width:920px){.paper-row{grid-template-columns:24px minmax(0,1fr) 130px;gap:10px 16px}.paper-info{grid-column:2;grid-row:1}.paper-progress{grid-column:2;grid-row:2;display:flex;gap:18px;flex-wrap:wrap}.practice-count{margin-top:0}.paper-actions{grid-column:3;grid-row:1/3}.resource-links{flex-direction:column;gap:18px}}
@media(max-width:720px){.app-shell{display:block}.sidebar{height:auto;position:static;padding:16px 18px 8px;border-right:0;border-bottom:1px solid var(--line)}.brand{font-size:20px;margin-bottom:12px}.brand small{font-size:12px;display:inline;margin-left:10px}.brand-mark{width:29px;height:32px}.nav-link{font-size:14px;padding:8px 12px}.nav-sub{display:none}.site-header{height:42px;padding:0 18px;font-size:12px}main{padding:24px 18px 40px}.site-footer{padding:0 18px 22px;line-height:1.8}h1{font-size:25px}.page-head{margin-bottom:22px}.page-head p{font-size:13px}.paper-row{grid-template-columns:22px minmax(0,1fr);gap:9px 12px;padding:20px 0}.paper-index{grid-column:1;grid-row:1}.paper-info{grid-column:2;grid-row:1}.paper-info h2{font-size:21px;gap:10px}.paper-progress{grid-column:2;grid-row:2;font-size:12px;gap:12px}.paper-actions{grid-column:2;grid-row:3;display:flex;gap:9px;margin-top:5px}.paper-actions .button{width:auto;flex:1;min-height:42px}.paper-note{margin-top:5px;font-size:11px}.paper-description{font-size:12px}.paper-help strong:not(:first-child){margin-left:8px}.resource-links{padding-top:20px;gap:20px}.resource-links span{font-size:12px}.timebox strong{font-size:21px}.work-title h1{font-size:20px}.number-grid{grid-template-columns:repeat(8,minmax(0,1fr));gap:7px}.number-btn{height:36px}.answer-sheet{padding:14px}.question-card{padding:19px 16px}.question-meta{margin-bottom:14px}.question-type{gap:8px}.stem{font-size:17px}.page-head>.button{margin-top:16px}}
@media print{.sidebar,.site-header{display:none!important}.app-shell{display:block}main{padding:0}}

/* Learning pages extend the quiet reading layout used by the exam. */
.learning-settings{border-bottom:1px solid var(--line,#dce2e5);padding:0 0 20px;margin-bottom:12px}
.learning-settings summary{cursor:pointer;color:#445763;font-size:14px}
.learning-settings form{display:flex;flex-wrap:wrap;align-items:end;gap:16px;margin-top:18px}
.learning-settings label,.reason-label,.confidence-label{display:flex;gap:8px;align-items:center;font-size:14px;flex-wrap:wrap}
.learning-settings label{align-items:start;flex-direction:column}
.learning-settings input,.learning-settings select,.reason-label select,.confidence-label select{font:inherit;background:white;border:1px solid #becbd2;border-radius:5px;padding:9px;max-width:100%}
.today-task{display:grid;grid-template-columns:42px minmax(0,1fr);gap:22px;padding:26px 0;border-bottom:1px solid #dce2e5}
.task-number{font-size:25px;font-weight:500;color:#83939c;font-variant-numeric:tabular-nums;line-height:1.5}
.today-task h2{font-size:21px;margin:0 0 10px}.today-task p{color:#52616b;line-height:1.8;margin:0 0 16px;max-width:680px}
.lesson-group,.coverage-group{margin:26px 0 36px}.lesson-group>h2,.coverage-group>h2{font-size:19px;padding-bottom:12px;border-bottom:2px solid #304958}
.lesson-row{display:flex;justify-content:space-between;gap:28px;padding:21px 0;border-bottom:1px solid #dce2e5;text-decoration:none;color:inherit}
.lesson-row:hover strong,.lesson-shortcut:hover{color:#17609a}.lesson-row strong{font-size:18px;font-weight:600}.lesson-row small{display:block;font-size:14px;color:#52616b;line-height:1.7;margin-top:7px;max-width:650px}
.lesson-row-meta{flex:0 0 100px;font-size:14px;color:#657780;text-align:right;line-height:1.7}
.lesson-reading{max-width:800px;font-size:16px;line-height:1.95}.lesson-reading h2{font-size:21px;margin:30px 0 13px}.lesson-reading li{margin:0 0 10px}
.scope-line{font-size:14px;color:#56656e;background:#f2f6f8;border-left:3px solid #6d8898;padding:12px 17px}
.concepts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin:25px 0}
.concepts dt{font-weight:600;margin-bottom:6px}.concepts dd{margin:0;color:#52616b}
.lesson-steps{padding-left:1.5em}.worked-example{padding:1px 22px 10px;background:#f3f7f9;border:1px solid #d9e4e9}
.worked-example h2{margin-top:18px}.practice-group{padding:17px 0;display:flex;gap:20px;align-items:center;justify-content:space-between;border-bottom:1px solid #dce2e5}
.practice-group small{display:block;font-size:14px;color:#657780}.lesson-finish{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.lesson-shortcut{display:block;margin:8px 0;font-weight:600}.question-support{padding:14px 0;margin:20px 0;border-top:1px solid #d0dedf;border-bottom:1px solid #d0dedf}
.reason-label{margin-top:18px}.confidence-label{margin:20px 0}.backup-panel{background:#f5f8fa;border:1px solid #d9e4e9;padding:22px;margin-bottom:32px}
.backup-input{display:block;font:inherit;max-width:240px;margin-left:12px}.revision-note{border-top:1px solid #b8cbd7;padding-top:20px;line-height:1.9}
.coverage-group td{vertical-align:top;min-width:110px}.coverage-group td:nth-child(2){width:60%}
.coverage-group td a{display:inline-block;padding:4px 0}.scope-line a{color:#1c567f}
@media(max-width:620px){
 .today-task{grid-template-columns:28px minmax(0,1fr);gap:12px;padding:22px 0}.task-number{font-size:20px}
 .concepts{grid-template-columns:1fr;gap:18px}.lesson-row{gap:14px}.lesson-row-meta{flex-basis:76px}
 .lesson-row strong{font-size:16px}.practice-group{align-items:start;flex-direction:column;gap:12px}
 .lesson-reading{font-size:16px}.worked-example{padding-left:15px;padding-right:15px}
 .backup-panel{padding:16px}.backup-panel .actions{align-items:start;flex-direction:column}.backup-input{max-width:180px;margin:8px 0 0}
 .learning-settings form{flex-direction:column;align-items:start}.reason-label{align-items:start;flex-direction:column}
}