/* Outward / warm paper, ink, and a small bright signal. */
.audio-controls{display:flex;align-items:flex-end;flex-wrap:wrap;gap:13px 18px;padding:18px 21px;margin-bottom:22px;border:1px solid #e2e8d8;background:#f2f5ea;border-radius:10px}.audio-title{align-self:center;flex:0 0 auto;font-size:13px;color:#7b8f5c;margin-right:4px}.audio-controls>label{flex:1 1 155px;min-width:0;font-size:11px;color:#8b9b74}.audio-controls select{width:100%;min-width:0;font-size:12px;padding:9px 11px;background:#fefff9;border-color:#dce5ce;margin-top:5px}.audio-controls>button{font-size:11px;color:#8e9f76;background:#fbfcf7;border-color:#dfe6d3;white-space:nowrap;padding:10px 13px}.audio-controls>p{flex-basis:100%;font-size:10px;line-height:1.9;color:#9ba88a;margin:0}.quiz-panel .audio-controls{margin-bottom:20px}@media(max-width:650px){.audio-controls{padding:16px;gap:12px}.audio-title{flex-basis:100%;font-size:12px}.audio-controls>label{flex:1 1 115px;font-size:10px}.audio-controls select{font-size:10px;padding:9px 8px}.audio-controls>button{font-size:10px;padding:9px 12px}.audio-controls>p{font-size:9px}}
.guide-section{padding:24px 0;border-top:1px solid #edf0e5}.guide-section:first-of-type{margin-top:22px}.guide-section h3{display:flex;align-items:center;gap:11px;font-size:15px;color:#62764b;margin:0 0 17px}.guide-section h3>span{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:8px;background:#eef2e2;color:#92a270;font-size:10px;font-weight:500;flex-shrink:0}.guide-section>p{font-size:13px;line-height:2.1;color:#7c886d}.guide-pattern{font-size:14px;line-height:2;color:#6b7e50;border:1px solid #e2e8d3;background:#f3f6e9;border-left:3px solid #a9ba80;border-radius:7px;padding:16px 18px;overflow-wrap:anywhere}.guide-rules{padding-left:19px;color:#95a180;font-size:12px;line-height:2}.guide-rules li{padding:5px 0}.guide-sentence{display:grid;grid-template-columns:1fr auto;gap:7px;padding:17px 0}.guide-sentence b{font-size:19px;font-weight:500;color:#62754b}.guide-sentence>span{grid-column:1;color:#9ba78a;font-size:12px}.guide-sentence button{grid-column:2;grid-row:1/3;align-self:center;padding:8px 10px;font-size:10px;color:#94a47a;border-color:#e2e8d7}.sentence-breakdown{table-layout:fixed;width:100%;margin-top:9px;border:1px solid #e5eadb;border-radius:7px;overflow:hidden}.sentence-breakdown th,.sentence-breakdown td{white-space:normal;overflow-wrap:anywhere;font-size:12px;line-height:1.9;padding:13px 12px}.sentence-breakdown th:nth-child(1){width:28%}.sentence-breakdown th:nth-child(2){width:24%}.sentence-breakdown th:nth-child(3){width:48%}.sentence-breakdown td:first-child{color:#647c48;font-size:13px}.guide-wrong,.guide-right{padding:14px 17px;border-radius:7px;margin:10px 0;overflow-wrap:anywhere}.guide-wrong{background:#fff5ef;border:1px solid #f1e0d5;color:#b58267}.guide-right{background:#f4f7ed;border:1px solid #e3ead5;color:#7a925b}.guide-wrong small,.guide-right small{font-size:10px}.guide-wrong p,.guide-right p{font-size:15px;margin-top:4px;line-height:1.9}.guide-why{padding:9px 0}.worked-prompt{font-size:15px;line-height:1.9;padding:16px;background:#f8f9f3;border-radius:7px;color:#70825b}.worked-example{border:1px solid #e8eddf;border-radius:8px;margin-top:13px;padding:14px 17px;background:#fdfef9}.worked-example summary,.grammar-glossary summary,.quiz-explanation summary{font-size:12px;color:#8c9d72;cursor:pointer;line-height:1.9}.worked-example ol,.guide-checklist{font-size:12px;line-height:2;color:#849572;padding-left:23px}.worked-example li,.guide-checklist li{padding:7px 0}.worked-example>p{font-size:12px;line-height:2;color:#8b9c76}.worked-answer{font-size:17px;color:#647e44;line-height:2.3}.worked-example button{margin-left:13px}.grammar-glossary{border:1px solid #e8eddf;border-radius:8px;background:#fafbf5;margin:18px 0;padding:13px 16px}.grammar-glossary dl{font-size:11px;line-height:2;margin-bottom:0}.grammar-glossary dt{color:#758b57;font-weight:600}.grammar-glossary dd{margin:2px 0 12px;color:#9baa88}.quiz-explanation{border-top:1px solid #dce7cb;padding-top:13px;margin-top:14px;margin-bottom:12px}.quiz-explanation ol{padding-left:20px;font-size:11px;line-height:2}.quiz-explanation li{margin:6px 0}.mini-lesson>.section-head{gap:12px}.mini-lesson>.section-head .text-button{font-size:10px}
@media(max-width:650px){.guide-section{padding:21px 0}.guide-section h3{font-size:13px;gap:9px}.guide-section h3>span{width:25px;height:25px}.guide-section>p{font-size:12px}.guide-pattern{font-size:12px;padding:13px}.guide-rules{font-size:11px}.guide-sentence b{font-size:17px}.guide-sentence>span{font-size:11px}.guide-sentence button{font-size:9px;padding:7px}.sentence-breakdown th,.sentence-breakdown td{font-size:10px;padding:11px 8px}.sentence-breakdown td:first-child{font-size:11px}.guide-wrong p,.guide-right p{font-size:13px}.worked-prompt{font-size:13px;padding:14px}.worked-example{padding:13px}.worked-example ol,.guide-checklist{font-size:11px}.worked-answer{font-size:15px}.mini-lesson>.section-head{align-items:flex-start}.mini-lesson>.section-head .text-button{font-size:9px}.mini-lesson>.section-head .pill{font-size:8px}}
.stage-navigation{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:22px}.stage-navigation button{text-align:left;padding:17px 20px;border:1px solid #e6eadc;color:#899675;background:#fff;font-size:13px;line-height:1.7}.stage-navigation small{display:block;font-size:10px;color:#a5ae97;margin-top:6px}.stage-navigation .selected{background:#f1f4e7;border-color:#bbc9a1;color:#6c8250}.lesson-list{max-height:900px;overflow-y:auto;scrollbar-width:thin}.practice-toolbar button{white-space:nowrap}@media(max-width:1150px){.lesson-list{max-height:none}}@media(max-width:650px){.stage-navigation{gap:7px}.stage-navigation button{font-size:10px;padding:12px 10px}.stage-navigation small{font-size:8px}}
.practice-toolbar{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:22px}.practice-layout{display:grid;grid-template-columns:285px minmax(0,1fr);gap:22px;align-items:start}.lesson-list{padding:21px!important}.lesson-list h2{font-size:14px}.lesson-item{width:100%;display:flex;gap:11px;align-items:center;text-align:left;padding:12px 8px;border:0!important;border-bottom:1px solid #f0f1e9!important;border-radius:5px;font-size:11px;color:#788568}.lesson-item.selected{background:#f3f4e9;color:#566640}.lesson-item small{display:block;font-size:9px;color:#a0aa91;margin-top:4px}.lesson-index{font-size:12px;color:#a2ad8e;min-width:19px}.mini-lesson h2{font-size:23px;margin:15px 0 8px}.lesson-rules{padding-left:22px;color:#6c795b;font-size:13px;line-height:2.1;margin:24px 0}.lesson-rules li{padding:7px 0}.sentence-examples{display:grid;gap:10px;margin:18px 0 24px}.sentence-examples>div{display:grid;grid-template-columns:1fr auto;gap:5px 15px;padding:17px 20px;background:#f7f8f1;border:1px solid #edf0e2;border-radius:8px}.sentence-examples b{font-size:18px;grid-column:1;font-weight:500;color:#5b7044}.sentence-examples span{font-size:12px;color:#98a382;grid-column:1}.sentence-examples button{grid-column:2;grid-row:1/3;align-self:center;color:#8b9d70;border-color:#e2e8d5;background:white;font-size:10px}.practice-routine{font-size:12px;color:#85956b;line-height:2.2}.quiz-progress{height:4px;background:#ecefe4;margin:18px 0 25px;border-radius:4px;overflow:hidden}.quiz-progress span{display:block;height:100%;background:#b3bf8f}.quiz-prompt{font-size:20px;font-weight:500;line-height:1.8;margin:18px 0 25px}.quiz-options{display:grid;gap:10px;margin-bottom:23px}.quiz-options label{display:flex;gap:13px;align-items:center;padding:15px 18px;border:1px solid #e5eadb;border-radius:8px;background:#fafbf6;color:#63754e;font-size:15px;cursor:pointer}.quiz-options label:has(input:checked){background:#f0f3e5;border-color:#a7b987}.quiz-options label>span{font-size:10px;color:#a2af8c}.quiz-options input[type=radio]{display:inline-block;flex-shrink:0;width:15px;height:15px;margin:0;accent-color:#8ba66c;padding:0}.quiz-feedback{border:1px solid #e3ebd6;background:#f3f7ec;border-radius:10px;padding:20px;margin:20px 0;color:#728656;font-size:12px;line-height:1.9}.quiz-feedback strong{font-size:16px;font-weight:550}.quiz-feedback.incorrect{background:#fff5ef;border-color:#f1ded0;color:#b88864}.quiz-feedback small{color:#99a68b;font-size:10px}.quiz-feedback button{margin-left:15px}.word-bank{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.word-bank button{font-size:15px;color:#7a8c5e;border-color:#dfe6d1;padding:10px 16px;background:#f7faef}.word-bank button:disabled{opacity:.3}.word-answer{min-height:62px;border:1px dashed #cfd9bd;border-radius:8px;padding:18px;margin:18px 0 8px;background:#fafbf7;font-size:16px;color:#859570}.quiz-panel .field input{font-size:16px}.quiz-panel .primary{margin-top:15px}.quiz-return{display:block;margin-top:24px}.quiz-finish h2{font-size:30px;margin:20px 0;color:#82965e}.quiz-finish>p{font-size:12px;color:#98a585}.result-list{margin-top:25px;padding-top:15px;border-top:1px solid #eef0e5;font-size:12px;color:#9ba88b}.result-list p{padding:7px 0}.result-list span{margin-right:8px}.quiz-panel .toolbar{margin-top:18px}
@media(min-width:651px){aside nav{max-height:calc(100vh - 260px);overflow-y:auto;scrollbar-width:thin;scrollbar-color:#52604c transparent}}
@media(max-width:1150px){.practice-layout{grid-template-columns:1fr}.lesson-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:5px}.lesson-list .section-head,.lesson-list>p{grid-column:1/-1}.lesson-item{font-size:10px;padding:10px 8px}.lesson-item small{font-size:8px}}
@media(max-width:650px){.lesson-list{grid-template-columns:repeat(2,minmax(0,1fr))}.practice-layout{display:block}.practice-toolbar{gap:6px}.practice-toolbar button{font-size:10px;padding:9px 11px}.mini-lesson h2{font-size:20px}.lesson-rules{font-size:12px;padding-left:17px}.sentence-examples b{font-size:17px}.sentence-examples>div{padding:15px}.sentence-examples span{font-size:11px}.quiz-prompt{font-size:17px}.quiz-options label{padding:14px;font-size:13px}.quiz-feedback{padding:16px;font-size:11px}.word-bank button{font-size:14px;padding:9px 12px}.word-answer{font-size:14px}.quiz-finish h2{font-size:27px}}
.book-open{display:inline-block;text-decoration:none;white-space:nowrap;font-size:12px;border-radius:8px}.book-hero{display:grid;grid-template-columns:145px 1fr;gap:30px;padding:28px;background:#eeeee3;border:1px solid #e3e4d7;border-radius:12px;margin-bottom:24px}.book-hero h2{font-size:22px;margin:12px 0 6px}.book-hero p{font-size:12px;line-height:1.9}.book-cover{padding:18px 14px;min-height:183px;background:#d4e1c1;border-radius:3px 10px 10px 3px;border-left:7px solid #9bb479;box-shadow:5px 7px 0 #d8dccd;display:flex;flex-direction:column;color:#4d6541}.book-cover small{font-size:10px}.book-cover strong{font-size:36px;letter-spacing:4px;font-weight:500;margin:6px 0}.book-cover span{font-size:12px}.book-cover i{font-size:8px;margin-top:auto;font-style:normal;color:#81956f}.book-links{display:flex;gap:20px;margin-top:18px;font-size:11px}.book-method{padding-left:22px;color:#7c8b6c;margin-bottom:0}.book-method li{padding:5px 0}.book-method b{font-size:12px;font-weight:500}.book-method p{font-size:11px;color:#9aa28d;margin:4px 0 8px}.book-checks .inline-check{font-size:11px;align-items:flex-start}.book-checks input{margin-top:4px;flex-shrink:0}@media(max-width:650px){.book-hero{grid-template-columns:86px 1fr;padding:20px 16px;gap:20px}.book-cover{min-height:145px;padding:14px 8px;border-left-width:5px}.book-cover strong{font-size:28px}.book-cover small{font-size:8px}.book-cover span{font-size:9px}.book-cover i{font-size:7px}.book-hero h2{font-size:17px;line-height:1.7}.book-hero p{font-size:10px}.book-links{display:block;font-size:10px}.book-links a{display:block;margin-top:6px}.book-open{margin-top:12px}}
:root{--bg:#f8f7f4;--ink:#242827;--muted:#8b8c86;--green:#dd6848;--line:#eae8e1;--accent:#f17550;--dark:#262c29}
body{background:var(--bg);font-family:'Segoe UI','Microsoft YaHei',sans-serif;letter-spacing:.1px}button{transition:background .16s,transform .16s,border-color .16s;border-radius:8px;font-size:12px;font-weight:500}button:active{transform:translateY(1px)}button:disabled{cursor:wait;opacity:.5}button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--accent)}[hidden]{display:none!important}aside{width:246px;background:var(--dark);border:0;padding:34px 20px;color:#d1d4cb}.brand{display:flex;gap:12px;align-items:center;color:#faf8f2;font-size:20px;padding:0 9px}.logo{width:36px;height:39px;border-radius:10px;background:var(--accent);font-size:28px;box-shadow:0 6px 18px #0001}.brand small{font-size:8px;color:#a6ada3;letter-spacing:2.2px;margin:2px 0 0;line-height:2}.nav-label{font-size:9px;color:#737f74;letter-spacing:2px;margin:40px 15px 14px}nav .nav-label{margin-top:27px;margin-bottom:10px}nav button{color:#acb5ab;font-size:13px;display:flex;align-items:center;gap:13px;padding:13px 15px;margin:4px 0;border-radius:8px;position:relative}nav button span{font-size:17px;line-height:1;width:18px;text-align:center;color:#7e9181}nav button i{margin-left:auto;font-size:9px;font-style:normal;color:#657365}nav button:hover{background:#333d35;color:#fff}nav button.active{color:#fcf9f1;background:#3c473d;font-weight:500}nav button.active:before{content:'';position:absolute;left:-20px;top:12px;bottom:12px;width:3px;background:var(--accent);border-radius:0 4px 4px 0}nav button.active span{color:#e8ad80}nav button.active i{color:#b5c0a7}.aside-bottom{bottom:23px;left:23px;right:23px;display:flex;align-items:center;gap:10px;border-top:1px solid #ffffff13;padding-top:22px;color:#bbc3b8}.aside-bottom b{font-size:11px;font-weight:500}.aside-bottom p{font-size:9px;margin:2px 0 0;color:#798d7d}.server-icon{width:32px;height:32px;background:#3c483c;display:grid;place-items:center;border-radius:9px;color:#b6c8a7}.aside-bottom button{margin-left:auto;background:transparent;border:0;padding:6px;color:#a8b2a4}main{max-width:none;margin-left:246px;padding:0 42px 20px}header{height:95px;margin-bottom:35px;border-color:#e9e7e0}.eyebrow{font-size:9px;letter-spacing:2.1px;font-weight:650;color:#969b91}header p{font-size:11px;color:#7b8278;margin-top:5px}.header-actions{display:flex;align-items:center;gap:16px}.local-badge{border:0;background:#eaf0e6;color:#65795d;font-size:10px;padding:7px 12px;letter-spacing:.1px}.local-badge:before{content:'';display:inline-block;width:5px;height:5px;background:#8aa177;border-radius:50%;margin-right:6px;vertical-align:middle}.local-badge[data-status=error]{background:#ffebe5;color:#b6533e}.local-badge[data-status=warning]{background:#fff1d2;color:#a7792a}.local-badge[data-status=busy]{background:#f0ede5;color:#9b8b6b}.avatar{width:32px;height:32px;border:1px solid #e1ded3;background:#efede5;border-radius:50%;display:grid;place-items:center;font-size:9px;letter-spacing:1px;color:#7c8274}.page-heading{margin-bottom:28px}h1{font-size:26px;letter-spacing:-.6px;line-height:1.5;font-weight:650}h2{font-size:16px;font-weight:600;letter-spacing:-.3px}h3{font-weight:600}.muted{color:#93948b;font-size:11px;line-height:1.9}.page-heading .muted{margin-top:8px;font-size:11px}.primary{background:var(--accent);border-color:var(--accent);color:white;padding:12px 18px;box-shadow:0 5px 12px #ee765014}.primary:hover{background:#df6846;border-color:#df6846;color:white}.hero{position:relative;overflow:hidden;margin:0 0 22px;background:#efeee5;color:var(--ink);border:1px solid #e5e4d9;border-radius:13px;padding:30px 32px;min-height:222px;grid-template-columns:1fr 200px;gap:32px}.hero:before{content:'';position:absolute;width:300px;height:300px;border:1px solid #b4b89d38;border-radius:50%;right:-15px;top:-45px;pointer-events:none}.hero:after{content:'';position:absolute;width:325px;height:325px;border:1px solid #b4b89d26;border-radius:50%;right:-30px;top:-60px;pointer-events:none}.hero .eyebrow{color:#80876c;font-size:9px}.hero h2{font-size:26px;font-weight:600;margin:14px 0 7px;letter-spacing:-.8px}.hero p{color:#91937e;font-size:11px}.hero .progress{background:#d9dccd;height:4px;margin:28px 0 9px;width:min(480px,100%)}.hero .progress span{background:#7b8e61}.hero-right{min-width:0;text-align:center;align-self:center;z-index:1}.hero-num{color:#75815d;font-size:66px;font-weight:300;line-height:1.2;letter-spacing:-3px;margin-top:2px}.hero-right p{font-size:10px;line-height:1.8}.stats{gap:16px;margin-bottom:26px}.stat,.panel{box-shadow:0 2px 3px #27292302;border:1px solid #e9e7e0;border-radius:12px}.stat{padding:20px 23px;position:relative;overflow:hidden}.stat:before{content:'';position:absolute;right:20px;top:23px;width:7px;height:7px;border:2px solid #a9b195;border-radius:2px;transform:rotate(45deg)}.stat:nth-child(2):before{border-color:#dca07a}.stat:nth-child(3):before{border-color:#aab7be}.stat:nth-child(4):before{border-color:#b9a5bc}.stat .value{font-size:29px;font-weight:550;letter-spacing:-.8px;margin:12px 0 4px}.stat-label{font-size:11px;color:#848b7f}.value small{font-size:10px;color:#8e9588;margin-left:6px;letter-spacing:0}.stat .muted{font-size:10px}.grid{grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:22px}.panel{padding:25px;margin-bottom:22px;min-width:0}.section-head{margin-bottom:18px}.pill{background:#f1f2e9;color:#82906e;font-size:9px;letter-spacing:.4px;padding:4px 8px;border-radius:4px;white-space:nowrap}.task{padding:16px 0;gap:11px;align-items:center;border-color:#f0eee8}.task input{accent-color:#839369;width:15px;height:15px;margin:0;flex-shrink:0}.task-time{font-family:'Segoe UI',sans-serif;font-size:10px;letter-spacing:.3px;color:#9a9e91;min-width:97px}.task-title{font-size:12px;color:#5b6659;flex:1}.task .pill{font-size:8px}.task.checked .task-title{color:#b0b6a9}.week-focus{background:#f8f8f3;border:1px solid #eeefe6;border-radius:8px;padding:16px 18px}.week-focus small{font-size:8px;color:#8b947a;letter-spacing:1.1px;font-weight:600}.week-focus p{font-size:12px;color:#586552;margin:5px 0 13px}.week-focus p:last-child{margin-bottom:0}.text-button{color:#929b84;font-size:10px;padding:4px 0}.text-button:hover{color:var(--accent)}.funnel{gap:8px;margin-top:15px}.funnel div{background:#f8f8f4;border-radius:7px;padding:15px 3px}.funnel strong{font-weight:500;font-size:25px;color:#707d61}.funnel small{font-size:9px;color:#a1a897}.funnel+.muted{font-size:9px;margin-top:12px}.notice{background:#fff7e8;color:#ab8c53;border:1px solid #f3ead2;border-radius:8px;font-size:11px}.resource{font-size:12px;border-color:#eeeee6;color:#65725b;padding:15px 0}.resource small{font-size:10px;color:#9a9f8e}.inputs{gap:18px}label.field{font-size:11px;color:#7f8b78}input:not([type=checkbox]),select,textarea{border-color:#e3e6dc;background:#fdfefa;border-radius:7px;font-size:12px;padding:11px 12px;line-height:1.7;color:#4d5c49}input:focus,textarea:focus,select:focus{border-color:#9caa88;outline:0;box-shadow:0 0 0 3px #9ba78918}input[readonly]{background:#f5f6ef;color:#879577}.inline-check{color:#859179;font-size:11px;gap:9px;margin:18px 0}input[type=checkbox]{accent-color:#8c9c75}.toolbar{gap:10px}.toolbar button{font-size:11px}.day-cell{font-size:10px;color:#a5ae99;border:1px solid #eef0e5;background:#f9faf5;aspect-ratio:1.4;display:grid;place-items:center}.day-cell.done{background:#e5ecd7;color:#7c8b62;border-color:#dfe8d0}.day-cell.selected{outline:1px solid #ef906d;background:#fff0e7;color:#cf7653}.week-card{border-color:#efeee5;padding:26px 0}.week-card:last-child{border:0}.week-number{background:#f2f4ea;color:#8b9875;font-size:20px;font-weight:500}.week-card.current .week-number{background:#f5dfd1;color:#c37751}.week-card h3{font-size:13px}.week-card h3 .muted{display:block;font-size:10px;margin-top:4px}.week-card p{color:#89967a;font-size:11px}.week-card .review textarea{font-size:11px}.empty{padding:64px 20px;font-size:11px;color:#a1aa96}.empty strong{font-size:16px;font-weight:500;color:#81916e;margin:10px 0}table{font-size:11px}th{background:#f8f9f4;color:#8e9c7d;padding:13px 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#e9ecdf;padding-top:20px;margin-top:4px}#toast{background:#3d4c34;font-size:12px;padding:12px 24px;box-shadow:0 6px 30px #1c2d1b1a;max-width:90vw}body.loading main{opacity:.6;pointer-events:none}.auth-page{display:grid;grid-template-columns:1fr 1fr;min-height:100vh;background:#f9f9f2}.auth-art{background:#e9ecdc;padding:43px 55px;position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:space-between;min-height:100vh}.auth-wordmark{letter-spacing:3px;font-size:16px;color:#697b50;font-weight:650}.auth-message{position:relative;z-index:1}.auth-message .eyebrow{font-size:10px;color:#8d9b75}.auth-message h1{font-size:clamp(30px,4vw,54px);line-height:1.6;letter-spacing:-2px;font-weight:500;color:#556b3d;margin:20px 0}.auth-message p{color:#91a078;font-size:13px;line-height:2.2}.auth-foot{font-size:11px;letter-spacing:1px;color:#a1ac8d}.orbit{position:absolute;border:1px solid #b8c3a170;width:420px;height:420px;border-radius:50%;left:200px;top:25px;z-index:-1}.orbit-two{width:490px;height:490px;left:165px;top:-10px}.art-arrow{position:absolute;right:0;bottom:-70px;font-size:200px;font-weight:200;color:#bfcca66b;z-index:-1}.auth-main{display:grid;place-items:center;padding:45px}.auth-card{max-width:360px;width:100%}.auth-card h1{font-size:27px;margin:24px 0 10px}.auth-card .muted{font-size:12px;margin-bottom:32px}.auth-card .primary{width:100%;margin-top:8px}.auth-card label.field{font-size:12px;margin-bottom:20px}.auth-card input{padding:13px 15px;background:white}.auth-note{font-size:11px;color:#a6af9b;line-height:2.1;margin-top:35px}.auth-error{color:#c07757;font-size:12px;line-height:1.8;margin-top:15px}.auth-card .pill{background:#eef0e6;color:#929e81;letter-spacing:2px;font-size:8px}
@media(min-width:1500px){main{padding-left:58px;padding-right:58px}}@media(max-width:1150px){aside{width:215px;padding-left:16px;padding-right:16px}main{margin-left:215px;padding-left:28px;padding-right:28px}nav button.active:before{left:-16px}.hero{grid-template-columns:1fr 155px;padding:26px}.hero h2{font-size:23px}.hero:before,.hero:after{right:-100px}.grid{grid-template-columns:1fr}.stats{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.stat{padding:17px}.stat .value{font-size:25px}.stat .muted{font-size:9px}.stat:before{right:12px;top:20px;width:5px;height:5px}.auth-art{padding:38px}.auth-main{padding:30px}.auth-card h1{font-size:24px}}
@media(max-width:800px){aside{width:190px;padding-left:12px;padding-right:12px}.brand{font-size:17px;gap:8px;padding:0 5px}.logo{width:31px;height:34px}.brand small{font-size:7px;letter-spacing:1.3px}main{margin-left:190px;padding-left:22px;padding-right:22px}nav button{font-size:12px;gap:8px}nav button i{display:none}.aside-bottom{left:16px;right:16px}.stats{grid-template-columns:repeat(2,1fr)}.hero{grid-template-columns:1fr 120px;gap:15px}.hero h2{font-size:20px}.hero-num{font-size:54px}.page-heading h1{font-size:22px}.page-heading .primary{font-size:11px;padding:11px 13px}.hero .eyebrow{font-size:8px;letter-spacing:1px}.sync-warning{display:block}.sync-warning>div{margin-top:10px}.auth-page{grid-template-columns:.85fr 1fr}.auth-art{padding:30px}.auth-message h1{font-size:30px}.orbit{left:30px}.orbit-two{left:0}.art-arrow{font-size:150px;right:-50px}.auth-main{padding:28px}.auth-card h1{font-size:22px}}
@media(max-width:650px){aside{position:static;width:100%;padding:18px 19px;background:var(--dark)}.brand{font-size:19px;gap:10px}.brand small{display:block;font-size:7px;letter-spacing:1.5px}.nav-label,.aside-bottom,nav .nav-label{display:none}nav{margin-top:17px;display:flex;gap:3px;overflow:auto;scrollbar-width:none}nav button{font-size:11px;gap:5px;padding:10px 9px;margin:0;white-space:nowrap;display:flex;width:auto}nav button span{font-size:13px;width:14px}nav button.active:before{display:none}main{margin:0;padding:0 18px 20px}header{height:77px;margin-bottom:25px}.eyebrow{font-size:8px;letter-spacing:1.1px}header p{font-size:9px}.header-actions{gap:8px}.avatar{display:none}.local-badge{font-size:8px;padding:6px 8px}.page-heading{gap:12px;margin-bottom:23px;display:block}h1,.page-heading h1{font-size:23px;letter-spacing:-.8px}.page-heading .primary{margin-top:15px}.page-heading .muted{font-size:10px}.hero{grid-template-columns:1fr 75px;min-height:200px;padding:22px 20px;gap:15px;border-radius:10px}.hero h2{font-size:19px;line-height:1.6;max-width:230px}.hero p{font-size:9px}.hero .eyebrow{font-size:7px;letter-spacing:.6px}.hero .progress{margin-top:22px}.hero-num{font-size:48px}.hero-right p{font-size:8px}.hero:before{width:240px;height:240px;right:-125px;top:-20px}.hero:after{width:265px;height:265px;right:-138px;top:-32px}.stats{gap:10px}.stat{padding:17px 18px}.stat .value{font-size:27px;margin:10px 0 3px}.stat-label{font-size:10px}.stat .muted{font-size:9px}.stat:before{right:15px;top:20px}.grid{display:block}.panel{padding:21px 19px;border-radius:10px}.panel h2{font-size:15px}.task{flex-wrap:nowrap;padding:15px 0;gap:8px}.task-time{font-size:8px;min-width:80px;letter-spacing:0}.task-title{font-size:10px;min-width:0}.task .pill{font-size:7px;padding:3px 5px}.task input{width:13px;height:13px}.inputs{grid-template-columns:1fr}.toolbar{gap:6px}.toolbar input,.toolbar button{font-size:10px;padding:8px}.toolbar .pill{font-size:8px}.week-card{grid-template-columns:40px 1fr;gap:12px;padding:22px 0}.week-number{height:45px;font-size:17px}.week-card>span{grid-column:2;width:fit-content}.week-card h3{font-size:12px}.week-card p{font-size:10px}.week-card textarea{font-size:10px}.days-grid{grid-template-columns:repeat(10,1fr);gap:5px}.day-cell{font-size:9px;aspect-ratio:1}.resource{font-size:11px}.resource small{font-size:9px}.sync-warning{font-size:11px}.auth-page{display:block}.auth-art{min-height:0;padding:22px 25px 25px}.auth-wordmark{font-size:13px}.auth-message{margin-top:30px}.auth-message h1{font-size:29px;margin:10px 0;line-height:1.4}.auth-message p{font-size:10px;margin:0}.auth-message p br{display:none}.auth-foot{display:none}.orbit{width:220px;height:220px;left:auto;right:-80px;top:-40px}.orbit-two{width:260px;height:260px;right:-100px;top:-60px}.art-arrow{font-size:120px;right:0;bottom:-20px}.auth-main{padding:35px 27px}.auth-card{max-width:400px}.auth-card h1{font-size:24px;margin:20px 0 8px}.auth-card .muted{margin-bottom:25px}.auth-note{margin-top:25px}}
.level-path .stage-navigation{margin:20px 0}.level-path .stage-navigation button>span{display:block;font-size:12px;margin-top:5px}.level-path .stage-navigation button b{font-size:17px;font-weight:500}.level-path .stage-navigation .level-meter{height:5px;margin-top:15px;background:#e6eadc;border-radius:5px;overflow:hidden}.level-meter>span{display:block;height:100%;background:#8fa66f}.level-next{display:flex;align-items:center;justify-content:space-between;gap:18px;padding-top:16px;border-top:1px solid #e9ecdf}.level-next b{font-size:13px;font-weight:500}.level-next p,.level-note{font-size:11px;color:#95a184;line-height:1.9}.level-next p{margin:7px 0 0}.level-note{margin:15px 0 0}.level-next button{flex-shrink:0}@media(max-width:650px){.level-path .stage-navigation{grid-template-columns:1fr}.level-path .stage-navigation button{padding:14px 16px}.level-path .stage-navigation button b{font-size:15px}.level-path .stage-navigation small{font-size:10px}.level-next{align-items:flex-start;flex-direction:column}.level-next button{width:100%}}
.reading-passage{padding:20px;background:#f4f6ef;border:1px solid #e2e8d9;border-radius:10px;margin:22px 0}.reading-passage h3{font-size:13px;margin-top:0}.reading-passage p{font-size:15px;line-height:2;color:#485241;overflow-wrap:anywhere}.reading-passage button{white-space:normal}.quiz-options label{overflow-wrap:anywhere}@media(max-width:650px){.reading-passage{padding:16px}.reading-passage p{font-size:14px;line-height:1.9}}
.difficulty-grid{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:8px;margin:20px 0}.difficulty-grid button{position:relative;min-height:42px;padding:8px 4px;color:#758365;background:#fafbf7;border:1px solid #e3e8dc;font-size:14px}.difficulty-grid button.selected{color:#fff;background:#d98660;border-color:#d98660}.difficulty-grid button.mastered:not(.selected){background:#e9efdf;color:#65814c}.difficulty-grid small{position:absolute;right:5px;top:2px;font-size:9px}.difficulty-focus{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:19px 0;border-top:1px solid #e6ebdd}.difficulty-focus h3{font-size:17px;margin:0 0 10px}.difficulty-focus p{font-size:12px;line-height:1.9;margin:6px 0;color:#8a977d}.difficulty-focus button{flex-shrink:0}.difficulty-neighbors{display:flex;align-items:center;justify-content:space-between;gap:10px}.difficulty-neighbors button{font-size:11px;white-space:normal;text-align:left;line-height:1.8}@media(max-width:650px){.difficulty-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:7px}.difficulty-grid button{min-height:38px;font-size:13px}.difficulty-focus{display:block}.difficulty-focus h3{font-size:15px;line-height:1.8}.difficulty-focus button{width:100%;margin-top:12px}.difficulty-neighbors{align-items:stretch}.difficulty-neighbors button{font-size:10px;max-width:68%}}
.auth-modes{display:flex;gap:10px;margin:20px 0}.auth-modes button{flex:1;font-size:12px}.learning-levels{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:20px}.learning-level-card{text-align:left;padding:18px;line-height:1.8;background:#f8faf3}.learning-level-card b,.learning-level-card span,.learning-level-card small{display:block}.learning-level-card b{font-size:13px;font-weight:500}.learning-level-card span{font-size:11px;margin-top:7px}.learning-level-card small{font-size:10px;color:#91a07d}.journal-dates{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}.topic-route{padding-left:22px;font-size:13px;line-height:2.3}.topic-route small{color:#9ba58d}.avatar{width:auto;max-width:130px;padding:8px 12px;border-radius:8px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}@media(max-width:650px){.learning-levels{grid-template-columns:1fr}.learning-level-card{padding:15px}.topic-route{font-size:11px}.auth-modes button{font-size:11px}.journal-dates button{font-size:10px}}
.math-lesson h2{margin-top:18px}.math-answer{font-size:17px;line-height:1.9;color:#68804f}.math-solution{padding-left:22px;line-height:2;font-size:14px}.math-quiz-panel .quiz-prompt{line-height:1.9;overflow-wrap:anywhere}.subject-selection .panel{display:flex;align-items:flex-start;flex-direction:column}.subject-selection .panel>.pill{margin-bottom:12px}.subject-selection .panel>.primary{margin-top:auto}.subject-selection .text-button{margin-top:10px}@media(max-width:650px){.math-solution{font-size:12px;padding-left:18px}.math-quiz-panel .quiz-prompt{font-size:18px}.math-answer{font-size:15px}.subject-selection .panel{margin-bottom:16px}}
.math-diagram{margin:18px 0;background:#f6f8f1;border:1px solid #e6eadf;border-radius:9px;padding:10px}.math-diagram svg{display:block;width:100%;max-width:360px;margin:auto;height:auto;max-height:210px}.math-diagram g{fill:#e5edd8;stroke:#829967;stroke-width:2}.math-diagram text{font-size:13px;fill:#506d3e;font-family:inherit}.math-diagram .math-height{fill:none;stroke-dasharray:5 4}.math-diagram figcaption{font-size:10px;color:#98a38c;text-align:center;line-height:1.8}

.math-tracks{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:20px 0}.math-tracks button{text-align:left;padding:18px;white-space:normal}.math-tracks strong,.math-tracks small{display:block}.math-tracks small{font-size:12px;margin-top:8px;line-height:1.6;color:var(--muted)}.math-tracks .selected,.math-chapters .selected{border-color:#2d7469;background:#e5f1eb;color:#174d44}.math-chapters{display:flex;gap:10px;flex-wrap:wrap}.math-chapters button{white-space:normal;text-align:left}.math-quiz-panel .quiz-options{display:grid;gap:12px}.math-quiz-panel .quiz-option{display:flex;gap:12px;align-items:center;padding:14px;border:1px solid #d6ded9;border-radius:10px}.math-quiz-panel .quiz-option input{width:auto}@media(max-width:800px){.math-tracks{grid-template-columns:repeat(2,minmax(0,1fr))}}

.math-thinking{font-size:15px;line-height:1.9}.math-walkthrough{list-style:none;padding:0;display:grid;gap:14px}.math-walkthrough li{padding:16px 20px;border-left:3px solid #78a88c;background:#f6f8f2;border-radius:0 10px 10px 0}.math-walkthrough p{margin:8px 0 0;white-space:pre-wrap}.math-check,.math-pitfall{padding:16px 20px;border-radius:10px;margin:16px 0}.math-check{background:#edf6f0}.math-pitfall{background:#fff4df}.math-check p,.math-pitfall p{margin-bottom:0}.math-symbols,.math-hint{padding:14px 18px;background:#f6f8f2;border:1px solid #dce6da;border-radius:10px;margin:16px 0}.math-symbols summary,.math-hint summary,.episode-full summary{cursor:pointer;font-weight:600;line-height:1.8}.episode-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;margin:20px 0 28px}.episode-grid button{padding:12px;text-align:left;white-space:normal}.episode-grid strong,.episode-grid small{display:block}.episode-grid small{margin-top:6px;color:#68776d}.episode-grid .selected{background:#e5f1eb;border-color:#2d7469;color:#174d44}.episode-full>summary{padding:20px;margin:18px 0;background:#fff;border:1px solid #e1e4dc;border-radius:12px}.quiz-feedback .math-thinking{color:#34463a}.math-hint .guide-section{padding:12px 0}@media(max-width:600px){.episode-grid{grid-template-columns:1fr}}

.math-course-picker{padding:18px;background:#fff;border:1px solid #e2e6de;border-radius:12px;margin-bottom:16px}.math-course-picker>summary,.math-more>summary{cursor:pointer;line-height:1.7;font-weight:600}.math-more{align-self:center;padding:10px}.math-more[open]{display:block}.walk-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:20px 0}.walk-steps button{font-size:13px;text-align:left;white-space:normal;padding:12px 8px}.walk-steps span{display:inline-grid;place-items:center;width:22px;height:22px;background:#eef1e9;border-radius:50%;margin-right:5px}.walk-steps .selected,.walk-groups .selected{background:#e5f1eb;color:#174d44;border-color:#2d7469}.walk-content{padding-top:12px;min-height:280px}.walk-intuition{font-size:18px;line-height:1.9;max-width:40em}.walk-example{padding:18px;background:#f5f7ee;border-radius:12px;margin:20px 0;line-height:1.8}.walk-navigation,.walk-groups{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0}.math-walk-panel .field{line-height:1.9}.math-walk-panel .field input{margin-top:8px}@media(max-width:600px){.walk-steps{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* Reading and inline practice: one continuous lesson. */
.math-reading{max-width:900px;margin:0 auto;padding:34px 42px;color:#253830;font-size:17px;line-height:1.9}.math-reading>section+section{border-top:1px solid #e1e7df;padding-top:32px;margin-top:32px}.math-reading h2{font-size:22px;color:#233e33;margin:0}.math-reading h3{font-size:17px;color:#30463c}.math-reading p{color:#3b4d43;font-size:17px;line-height:1.95}.reading-section-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:20px}.reading-section-head>span{color:#749381;font-size:13px;letter-spacing:1px;padding-top:6px}.reading-section-head p{font-size:14px;color:#6e7e72;margin:5px 0 0}.reading-section-head small{margin-left:auto;white-space:nowrap;font-size:13px;color:#54745f}.reading-number-example{padding:18px 24px;border-radius:12px;background:#f2f6ef}.reading-number-example p{font-size:19px;margin:8px 0;color:#1e4939;font-family:Cambria,"Microsoft YaHei",serif;overflow-wrap:anywhere}.reading-bridge{margin:20px 0;padding:0 0 0 16px;border-left:3px solid #96b5a2;line-height:2}.reading-problem{background:#f7f8f3;border:1px solid #e7ebdf;border-radius:10px;padding:18px;font-size:21px;color:#243e32}.reading-working{counter-reset:mathstep;list-style:none;padding:0;margin:24px 0}.reading-working li{position:relative;padding:0 0 16px 38px;counter-increment:mathstep}.reading-working li:before{content:counter(mathstep);position:absolute;left:0;top:2px;color:#64816d;font-size:14px}.reading-working h3{margin:0 0 6px}.reading-working p{margin:0}.reading-result{border-top:1px dashed #dce4d9;padding-top:16px}.reading-help{font-size:14px;color:#687c6c}.reading-help summary{cursor:pointer}.reading-help li{margin:8px 0}.inline-math-question{padding:24px 0;border-top:1px solid #e7ebe3}.inline-question-title{display:flex;gap:12px;align-items:baseline;margin-bottom:12px}.inline-question-title>span{font-size:12px;color:#718775}.inline-question-title h3{font-size:19px;margin:0;line-height:1.8}.math-reading .field input{font-size:17px;max-width:100%;margin:0}.math-reading .field input::placeholder{font-size:13px;color:#7e8b80}.math-reading [data-math-inline]{display:flex;align-items:start;gap:10px}.math-reading [data-math-inline] .field{flex:1;margin:0}.math-reading [data-math-inline] button{white-space:nowrap;align-self:stretch}.inline-math-feedback{padding:12px 16px;margin-top:14px;border-radius:9px;font-size:14px}.inline-math-feedback p{font-size:14px;margin:4px 0}.inline-math-feedback.is-correct{background:#f0f6ef;color:#326044}.inline-math-feedback.is-wrong{background:#fff5e9;color:#835633}.inline-math-feedback summary{cursor:pointer}.inline-math-feedback li{margin:12px 0}.inline-math-choices{display:grid;gap:8px;flex:1}.inline-math-choices label{display:flex;gap:10px;align-items:center;padding:10px 14px;background:#f6f8f3;border:1px solid #e1e7dd;border-radius:8px}.inline-math-choices input{width:auto}.inline-practice-footer{border-top:1px solid #e1e7dc;margin-top:12px;padding-top:18px}.inline-practice-footer p{font-size:14px;color:#6c7b6c}.inline-practice-footer>div{display:flex;gap:16px;flex-wrap:wrap}.reading-course-picker{max-width:900px;margin:0 auto 20px}.reading-course-picker>summary{display:list-item;font-size:15px}.reading-course-picker>summary span{float:right;font-size:12px;color:#768371;font-weight:400}.reading-course-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:18px 0}.reading-course-list button{text-align:left;white-space:normal;line-height:1.8}.reading-course-list .selected{background:#e7f0e8;border-color:#75977b}.reading-review-tools{display:flex;gap:10px;flex-wrap:wrap}.math-reading .sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.math-inline-practice{scroll-margin-top:24px}@media(max-width:650px){.math-reading{padding:24px 18px;font-size:16px}.math-reading p{font-size:16px}.math-reading h2{font-size:19px}.reading-number-example{padding:12px 15px}.reading-number-example p{font-size:17px}.reading-course-picker>summary span{float:none;display:block;margin-top:5px}.reading-course-list{grid-template-columns:1fr}.math-reading [data-math-inline]{flex-direction:column}.math-reading [data-math-inline] .field,.inline-math-choices{width:100%}.math-reading [data-math-inline] button{align-self:flex-start}.reading-section-head small{font-size:11px}.reading-working li{padding-left:26px}}