:root{--paper:#f3f1ea;--paper-deep:#e7e3d9;--white:#fbfaf6;--ink:#1b2930;--ink-2:#415057;--muted:#747e81;--line:#d7d4cc;--green:#263e49;--green-2:#3c5964;--acid:#c8aa72;--clay:#a8765c;--blue:#9bacb1;--serif:"Iowan Old Style","Baskerville","Songti SC","Noto Serif SC",serif;--sans:"Avenir Next","PingFang SC","Microsoft YaHei",sans-serif;--safe:env(safe-area-inset-bottom,0px)}
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.today-hero{min-height:276px;position:relative;overflow:hidden;border-radius:4px;background:var(--green);color:#f8f6f0;display:grid;grid-template-columns:1.12fr .88fr}.today-hero:after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 76% 45%,#c8aa7219 0 1px,transparent 1.6px);background-size:16px 16px;mask-image:linear-gradient(90deg,transparent 37%,#000 100%);pointer-events:none}.hero-copy{padding:25px 27px;position:relative;z-index:1}.hero-kicker{font-size:8px;letter-spacing:.17em;color:#c3ccce;display:flex;align-items:center;gap:9px}.hero-kicker b{font-size:9px;font-weight:500;color:var(--acid);border:1px solid #c8aa7254;border-radius:20px;padding:5px 8px}.today-hero h2{font:400 30px/1.15 var(--serif);margin:15px 0 7px;max-width:360px}.today-hero .hero-sub{font-size:10px;line-height:1.7;color:#d7dedf;margin:0;max-width:360px}.hero-meta{display:flex;gap:17px;margin-top:16px;color:#c1cccf;font-size:9px}.hero-meta span{display:flex;align-items:center;gap:6px}.hero-meta i{width:4px;height:4px;border-radius:50%;background:var(--acid)}.hero-cta-row{display:flex;align-items:center;gap:15px;margin-top:21px}.primary-button{border:0;background:var(--acid);color:var(--ink);padding:11px 15px;border-radius:2px;font-size:10px;font-weight:600;letter-spacing:.025em;transition:transform .2s,background .2s}.primary-button:hover{transform:translateY(-1px);background:#d5c092}.text-link{border:0;background:transparent;padding:6px 0;color:inherit;font-size:9px}.hero-visual{position:relative;display:grid;place-items:center;z-index:1}.orbital{width:min(78%,320px);aspect-ratio:1;max-height:260px;position:relative}.orbital svg{width:100%;height:100%;overflow:visible}.orbital-note{position:absolute;bottom:20px;right:21px;font-size:8px;letter-spacing:.14em;color:#bfcacc}.orbital-label{position:absolute;font:italic 12px var(--serif);color:var(--acid);left:12%;top:14%}
.metric-row{display:grid;grid-template-columns:repeat(3,1fr);margin:17px 0 30px;border:1px solid var(--line);background:#f5f3ed}.metric{padding:13px 16px;display:flex;align-items:center;gap:11px}.metric+.metric{border-left:1px solid var(--line)}.metric-icon{width:29px;height:29px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;color:var(--green);font:15px var(--serif)}.metric strong{font:400 21px var(--serif);display:block;line-height:1}.metric small{display:block;font-size:8px;color:var(--muted);margin-top:5px;letter-spacing:.04em}
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.below-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:32px;margin-top:27px}.next-list{border-top:1px solid var(--line)}.next-item{display:grid;grid-template-columns:39px 1fr 20px;gap:10px;align-items:center;padding:12px 3px;border-bottom:1px solid var(--line);cursor:pointer}.next-num{font:italic 19px var(--serif);color:#a8afa4}.next-title{font-size:10px;font-weight:600}.next-desc{font-size:8px;color:var(--muted);margin-top:4px}.next-arrow{color:#869287;font-size:15px}.principle-card{background:var(--paper-deep);padding:18px 17px;min-height:160px;position:relative;overflow:hidden}.principle-card:after{content:"C";font:italic 100px var(--serif);position:absolute;right:-1px;bottom:-37px;color:#263e490a}.principle-card .micro-label{font-size:8px}.principle-card p{font:italic 18px/1.35 var(--serif);max-width:220px;margin:20px 0 11px;position:relative;z-index:1}.principle-card small{font-size:8px;color:var(--muted)}
.subpage-head{padding:31px 0 22px;border-bottom:1px solid var(--line);margin-bottom:22px}.subpage-head h1{font:400 37px/1.08 var(--serif);letter-spacing:-.04em;margin:11px 0 8px}.subpage-head p{font-size:10px;line-height:1.75;color:var(--muted);max-width:560px;margin:0}.course-overview{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);margin-bottom:22px}.overview-cell{padding:13px 15px}.overview-cell+.overview-cell{border-left:1px solid var(--line)}.overview-cell strong{display:block;font:400 20px var(--serif)}.overview-cell span{font-size:8px;color:var(--muted);letter-spacing:.05em}.week-block{margin-bottom:17px;border:1px solid var(--line);background:#f8f6ee}.week-head{display:flex;align-items:center;justify-content:space-between;padding:13px 15px;background:#edede3;border-bottom:1px solid var(--line)}.week-head-left{display:flex;align-items:center;gap:11px}.week-number{width:27px;height:27px;display:grid;place-items:center;border-radius:50%;background:var(--green);color:#fff;font:italic 14px var(--serif)}.week-head h2{font:400 17px var(--serif);margin:0}.week-head p{font-size:8px;color:var(--muted);margin:3px 0 0}.week-stat{font-size:8px;color:var(--muted)}.course-day{display:grid;grid-template-columns:51px 1fr auto;gap:11px;align-items:center;padding:11px 15px;border-bottom:1px solid #e8e7dd;cursor:pointer;transition:background .18s}.course-day:last-child{border-bottom:0}.course-day:hover{background:#efefe5}.course-day.current{background:#edf0e5}.course-day.done .day-number{color:var(--green)}.day-number{font:italic 18px var(--serif);color:#9aa399}.course-day-title{font-size:10px;font-weight:600}.course-day-sub{font-size:8px;color:var(--muted);margin-top:4px}.day-status{font-size:8px;color:var(--muted);padding:4px 7px;border:1px solid var(--line);border-radius:20px}.course-day.current .day-status{background:var(--green);color:white;border-color:var(--green)}.course-day.done .day-status{color:var(--green);border-color:#b5c1b1}
.lesson-page{max-width:850px}.lesson-toolbar{display:flex;justify-content:space-between;align-items:center;padding:23px 0 16px;border-bottom:1px solid var(--line)}.back-button{border:0;background:none;font-size:9px;color:var(--muted);padding:5px 0}.lesson-toolbar-right{display:flex;gap:8px;align-items:center}.lesson-toolbar-right span{font-size:8px;letter-spacing:.1em;color:var(--muted)}.bookmark-button{border:1px solid var(--line);border-radius:50%;width:29px;height:29px;background:transparent;color:var(--green)}.lesson-heading{padding:25px 0 16px}.lesson-heading h1{font:400 clamp(30px,4vw,46px)/1.08 var(--serif);letter-spacing:-.04em;margin:12px 0 8px}.lesson-heading p{font-size:10px;color:var(--muted);line-height:1.7;margin:0}.lesson-objectives{display:grid;grid-template-columns:110px 1fr;gap:13px;padding:13px 15px;background:#e9ede1;border-left:2px solid var(--green);margin:14px 0 21px}.lesson-objectives .micro-label{font-size:8px;padding-top:3px}.lesson-objectives ul{padding:0;margin:0;list-style:none;display:flex;flex-wrap:wrap;gap:7px 18px}.lesson-objectives li{font-size:9px;color:var(--ink-2)}.lesson-objectives li:before{content:"↗";color:var(--green);margin-right:6px}.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 205px;gap:27px}.lesson-article{min-width:0}.lesson-block{padding:13px 0 14px;border-bottom:1px solid var(--line)}.lesson-block h2{font:400 21px var(--serif);margin:0 0 8px}.lesson-block p{font-size:10px;line-height:1.9;color:#526157;margin:0 0 9px}.lesson-block p:last-child{margin:0}.formula-board{background:var(--green);color:#edf2e7;padding:13px 15px;margin:13px 0 2px;display:flex;align-items:center;justify-content:space-between;gap:12px}.formula-board .formula{font:400 17px var(--serif);letter-spacing:.03em}.formula-board .formula-note{font-size:8px;color:#c5d4c3;text-align:right;line-height:1.6}.study-aside{border-left:1px solid var(--line);padding-left:17px}.aside-card{padding:13px 0;border-bottom:1px solid var(--line)}.aside-card h3{font-size:8px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0 0 9px}.aside-card p,.aside-card li{font-size:9px;line-height:1.65;color:#5b685e;margin:0}.aside-card ul{list-style:none;padding:0;margin:0;display:grid;gap:6px}.aside-card li:before{content:"•";color:var(--clay);margin-right:6px}.lesson-quiz{margin-top:20px;padding:17px;background:#e9e8dd;border:1px solid var(--line)}.quiz-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:9px}.quiz-top h2{font:400 19px var(--serif);margin:0}.quiz-top span{font-size:8px;letter-spacing:.11em;color:var(--muted)}.quiz-question{font-size:10px;line-height:1.65;margin:8px 0 11px}.answer-list{display:grid;gap:6px}.answer-option{border:1px solid #d5d6ca;background:#f8f7f0;padding:9px 11px;text-align:left;font-size:9px;color:#445249;transition:.18s}.answer-option:hover:not(:disabled){border-color:var(--green);background:#f0f2e7}.answer-option.correct{border-color:#587760;background:#dfe9db}.answer-option.incorrect{border-color:#c7815e;background:#f0e0d5}.answer-feedback{font-size:9px;line-height:1.6;margin-top:9px;color:var(--green)}.lesson-footer{display:flex;justify-content:space-between;align-items:center;padding:16px 0 27px}.secondary-button{border:1px solid var(--line);background:transparent;padding:9px 12px;font-size:9px}.lesson-footer .primary-button{padding:10px 14px}.secondary-button:disabled{opacity:.4;cursor:default}
.practice-card{background:var(--green);color:#f4f2eb;padding:24px;position:relative;overflow:hidden;margin:18px 0}.practice-card:after{content:"✳";position:absolute;right:21px;top:-19px;font:150px var(--serif);color:#c8aa7214}.practice-card .micro-label{color:#c1cccf}.practice-card h2{font:400 27px var(--serif);margin:13px 0 7px}.practice-card p{font-size:9px;line-height:1.75;color:#d7dedf;max-width:500px}.practice-controls{display:flex;align-items:center;gap:12px;margin-top:17px}.practice-card .primary-button{position:relative;z-index:1}.practice-progress{font-size:8px;color:#c4d0c1}.quiz-workspace{max-width:700px}.question-card{padding:20px 0;border-bottom:1px solid var(--line)}.question-card h3{font:400 19px var(--serif);margin:0 0 6px}.question-card p{font-size:10px;line-height:1.7;color:#506056}.question-index{font-size:8px;letter-spacing:.12em;color:var(--clay)}.result-panel{background:#e8eadf;border:1px solid var(--line);padding:22px;margin-top:17px}.result-panel strong{font:400 36px var(--serif)}.result-panel p{font-size:10px;color:var(--muted);line-height:1.7}.review-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:28px}.review-stage{min-height:280px;background:var(--white);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;position:relative;text-align:center;padding:25px;cursor:pointer}.review-stage:before,.review-stage:after{content:"";position:absolute;left:17px;right:17px;height:1px;background:#e7e5da}.review-stage:before{top:13px}.review-stage:after{bottom:13px}.review-stage .card-index{position:absolute;top:23px;left:24px;font-size:8px;letter-spacing:.13em;color:var(--muted)}.review-stage .card-content{font:400 26px/1.35 var(--serif);max-width:460px}.review-stage .card-hint{position:absolute;bottom:25px;font-size:8px;letter-spacing:.1em;color:#9aa297}.review-controls{display:flex;gap:8px;margin-top:10px}.review-controls button{flex:1;padding:11px 8px;border:1px solid var(--line);background:transparent;font-size:9px}.review-controls button:last-child{background:var(--green);color:white;border-color:var(--green)}.queue-panel{border-top:1px solid var(--line)}.queue-panel h3{font:400 19px var(--serif);margin:0;padding:0 0 12px}.queue-item{padding:10px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:10px}.queue-item strong{font-size:9px;font-weight:500}.queue-item span{font-size:8px;color:var(--muted)}.empty-review{padding:18px;background:#e9ece2;font-size:10px;line-height:1.8;color:var(--muted)}.mistakes-section{margin-top:27px}.mistake-item{display:grid;grid-template-columns:38px 1fr auto;gap:10px;align-items:center;border-top:1px solid var(--line);padding:11px 3px;cursor:pointer}.mistake-item .num{font:italic 18px var(--serif);color:var(--clay)}.mistake-item strong{font-size:9px}.mistake-item small{display:block;margin-top:4px;color:var(--muted);font-size:8px}.mistake-item .arrow{color:var(--muted)}
.glossary-tools{display:flex;gap:9px;align-items:center;margin:20px 0 13px}.glossary-search{height:38px;border:1px solid var(--line);background:#faf9f3;display:flex;align-items:center;gap:9px;padding:0 12px;flex:1}.glossary-search span{font-size:17px;color:var(--muted)}.glossary-search input{border:0;outline:0;background:transparent;font-size:10px;width:100%;color:var(--ink)}.filter-select{height:38px;border:1px solid var(--line);background:transparent;padding:0 10px;color:var(--muted);font-size:9px}.glossary-list{border-top:1px solid var(--line)}.term-row{display:grid;grid-template-columns:180px 1fr 70px;gap:18px;padding:14px 4px;border-bottom:1px solid var(--line);align-items:start}.term-name{font:400 17px var(--serif)}.term-en{font-size:8px;color:var(--muted);margin-top:4px}.term-def{font-size:9px;line-height:1.8;color:#536157}.term-tag{justify-self:end;font-size:8px;color:var(--muted);border:1px solid var(--line);border-radius:20px;padding:4px 7px}.empty-results{padding:20px;text-align:center;color:var(--muted);font-size:10px}
.progress-hero{display:grid;grid-template-columns:1fr auto;align-items:center;padding:19px 21px;background:var(--green);color:#f8f6f0;margin:18px 0}.progress-hero .micro-label{color:#c2d0bf}.progress-hero h2{font:400 23px var(--serif);margin:9px 0 5px}.progress-hero p{font-size:9px;color:#cad7c9;margin:0}.progress-number{font:400 42px var(--serif);color:var(--acid)}.progress-number small{display:block;font:8px var(--sans);color:#c2d0bf;text-align:right;letter-spacing:.1em}.progress-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:23px}.progress-panel{border-top:1px solid var(--line);padding-top:12px}.progress-panel h3{font:400 18px var(--serif);margin:0 0 12px}.bar-row{display:grid;grid-template-columns:100px 1fr 28px;align-items:center;gap:9px;margin:10px 0}.bar-label{font-size:8px;color:var(--muted)}.bar-track{height:4px;background:#dcddd1}.bar-track i{display:block;height:100%;background:var(--green)}.bar-value{font:italic 12px var(--serif);text-align:right}.record-list{border-top:1px solid var(--line)}.record-row{display:flex;justify-content:space-between;padding:10px 1px;border-bottom:1px solid var(--line);font-size:9px}.record-row span:last-child{color:var(--muted)}.settings-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:19px}.settings-row button{font-size:9px}.resource-list{display:flex;gap:10px;flex-wrap:wrap;margin-top:11px}.resource-list a{font-size:9px;color:var(--green);text-decoration:none;border-bottom:1px solid #a9b5a8;padding-bottom:2px}
.search-dialog{border:0;padding:0;background:transparent;width:min(600px,calc(100vw - 24px));max-width:none}.search-dialog::backdrop{background:#14241fc2;backdrop-filter:blur(3px)}.search-panel{background:var(--paper);padding:22px;border:1px solid var(--line);box-shadow:0 18px 70px #0d17133b}.search-head{display:flex;justify-content:space-between;align-items:start}.search-head h2{font:400 25px var(--serif);margin:8px 0 13px}.search-field{height:43px;border:1px solid var(--line);background:var(--white);display:flex;align-items:center;gap:9px;padding:0 12px}.search-field span{font-size:18px;color:var(--muted)}.search-field input{border:0;outline:0;background:transparent;flex:1;font-size:10px}.search-results{max-height:300px;overflow:auto}.search-result{display:grid;grid-template-columns:120px 1fr;gap:13px;padding:11px 2px;border-bottom:1px solid var(--line);cursor:pointer}.search-result strong{font:400 15px var(--serif)}.search-result span{font-size:8px;color:var(--muted);line-height:1.7}.search-foot{font-size:8px;color:#9ba197;margin-top:11px}.toast{position:fixed;z-index:20;left:50%;bottom:24px;transform:translate(-50%,12px);padding:10px 14px;background:var(--ink);color:#fff;font-size:9px;opacity:0;pointer-events:none;transition:.2s}.toast.show{opacity:1;transform:translate(-50%,0)}.mobile-nav{display:none}
@media(max-width:1050px){.main-area{padding:0 30px 50px}.below-grid{gap:20px}.lesson-layout{grid-template-columns:minmax(0,1fr) 175px;gap:19px}.study-aside{padding-left:13px}.review-layout{grid-template-columns:minmax(0,1fr) 225px;gap:19px}}
@media(max-width:760px){.sidebar{display:none}.main-area{margin-left:0;padding:0 19px calc(83px + var(--safe))}.topbar{height:55px;margin:0 -19px;padding:0 19px;position:sticky;top:0;z-index:4;background:#f3f1eaed;backdrop-filter:blur(14px)}.mobile-brand{display:flex;align-items:center;gap:8px;font-size:11px;letter-spacing:.17em}.brand-symbol.small{width:23px;height:23px}.brand-symbol.small:before,.brand-symbol.small:after{height:25px;left:10px;top:-2px}.brand-symbol.small i{left:8px;top:8px;width:5px;height:5px}.brand-symbol.small b{left:3px;top:6px;width:4px;height:4px}.brand-symbol.small em{left:15px;top:12px;width:4px;height:4px}.crumb{display:none}.top-actions{gap:8px}.date-button{font-size:8px}.icon-button{width:29px;height:29px}.mobile-nav{display:grid;grid-template-columns:repeat(6,1fr);position:fixed;z-index:8;bottom:0;left:0;right:0;padding:7px 7px calc(7px + var(--safe));background:#f3f1eaef;backdrop-filter:blur(16px);border-top:1px solid var(--line)}.mobile-link{border:0;background:none;color:#8b958c;display:flex;flex-direction:column;align-items:center;gap:3px;font-size:8px;padding:3px 0}.mobile-link span{font:16px var(--serif);height:17px}.mobile-link.active{color:var(--green)}.page-wrap{padding-top:23px}.welcome-row{align-items:start;display:block}.welcome-meta{margin-top:11px;padding:0}.hero-title{font-size:39px}.today-hero{grid-template-columns:1fr;min-height:295px}.hero-copy{padding:21px 20px;z-index:2}.today-hero h2{font-size:27px;max-width:270px;margin:13px 0 6px}.today-hero .hero-sub{max-width:290px}.hero-visual{position:absolute;right:-28px;bottom:4px;width:52%;height:49%;opacity:.75}.orbital{width:100%;max-height:none}.orbital-note{font-size:6px;right:9px;bottom:8px}.orbital-label{font-size:9px}.hero-cta-row{margin-top:18px}.hero-meta{margin-top:12px}.metric-row{margin:12px 0 23px}.metric{padding:10px 7px;gap:6px}.metric-icon{width:23px;height:23px;font-size:12px}.metric strong{font-size:18px}.metric small{font-size:7px}.section-heading{margin:21px 0 10px}.section-heading h2{font-size:20px}.week-cell{padding:10px 2px}.week-cell .wday{font-size:7px}.week-cell .wdate{font-size:14px}.week-cell .day-label{font-size:6px}.below-grid{grid-template-columns:1fr;gap:16px;margin-top:22px}.principle-card{min-height:120px}.principle-card p{margin:14px 0 7px}.subpage-head{padding:25px 0 17px}.subpage-head h1{font-size:33px}.subpage-head p{font-size:9px}.course-overview{grid-template-columns:repeat(3,1fr)}.overview-cell{padding:10px 8px}.overview-cell strong{font-size:17px}.overview-cell span{font-size:7px}.week-head{padding:11px}.week-head h2{font-size:15px}.course-day{grid-template-columns:40px 1fr auto;padding:10px 10px;gap:7px}.course-day-title{font-size:9px}.course-day-sub{font-size:7px}.day-number{font-size:16px}.day-status{font-size:7px;padding:4px 6px}.lesson-toolbar{padding:15px 0 11px}.lesson-heading{padding:18px 0 10px}.lesson-heading h1{font-size:33px}.lesson-layout{grid-template-columns:1fr}.study-aside{border-left:0;border-top:1px solid var(--line);padding:0;display:grid;grid-template-columns:1fr 1fr;gap:0 14px}.aside-card{padding:11px 0}.lesson-objectives{grid-template-columns:1fr;gap:6px;padding:11px}.lesson-objectives ul{gap:5px 12px}.lesson-block h2{font-size:19px}.lesson-block p{font-size:9px}.formula-board{padding:11px}.formula-board .formula{font-size:15px}.review-layout{grid-template-columns:1fr}.queue-panel{margin-top:17px}.review-stage{min-height:245px}.review-stage .card-content{font-size:23px}.glossary-tools{align-items:stretch}.filter-select{max-width:103px;font-size:8px;padding:0 6px}.term-row{grid-template-columns:112px 1fr;gap:8px 11px;padding:12px 1px}.term-name{font-size:15px}.term-tag{grid-column:2;justify-self:start;grid-row:2}.term-def{grid-column:1 / -1;grid-row:2;padding-top:3px}.term-tag{display:none}.progress-hero{padding:16px}.progress-hero h2{font-size:20px}.progress-number{font-size:35px}.progress-grid{grid-template-columns:1fr;gap:19px}.bar-row{grid-template-columns:93px 1fr 25px}.search-dialog{margin:auto}.search-panel{padding:17px}.search-result{grid-template-columns:94px 1fr}.toast{bottom:calc(78px + var(--safe))}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}
.notebook{margin-top:16px;padding:15px;border:1px solid var(--line);background:#faf9f3}.notebook-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.notebook-head h2{font:400 18px var(--serif);margin:0}.notebook-head span{font-size:8px;color:var(--muted)}.notebook p{font-size:9px;line-height:1.7;color:var(--muted);margin:0 0 9px}.notebook textarea{width:100%;min-height:92px;resize:vertical;border:1px solid var(--line);background:#f3f1ea;padding:10px;font:10px/1.7 var(--sans);outline:0;color:var(--ink)}.notebook textarea:focus{border-color:var(--green)}.notebook-status{font-size:8px;color:var(--muted);text-align:right;margin-top:5px}
@media(min-width:761px){.side-link{font-size:12px}.side-caption,.crumb,.date-button{font-size:10px}.eyebrow{font-size:10px}.intro-copy{font-size:13px}.welcome-meta{font-size:10px}.today-hero h2{font-size:34px}.today-hero .hero-sub{font-size:12px}.hero-meta{font-size:10px}.primary-button,.text-link,.quiet-button,.secondary-button{font-size:11px}.metric small{font-size:9px}.section-heading p{font-size:10px}.week-cell .wday{font-size:9px}.week-cell .wdate{font-size:18px}.week-cell .day-label{font-size:8px}.next-title,.course-day-title{font-size:12px}.next-desc,.course-day-sub{font-size:10px}.principle-card p{font-size:20px}.subpage-head p{font-size:12px}.overview-cell span{font-size:9px}.week-head p{font-size:9px}.week-stat,.day-status{font-size:9px}.course-day{padding-top:13px;padding-bottom:13px}.lesson-objectives li{font-size:11px}.lesson-block p{font-size:13px}.lesson-block h2{font-size:23px}.formula-board .formula{font-size:19px}.formula-board .formula-note{font-size:9px}.quiz-question{font-size:12px}.answer-option{font-size:11px;padding:11px 13px}.answer-feedback{font-size:10px}.aside-card p,.aside-card li{font-size:10px}.notebook p{font-size:11px}.notebook textarea{font-size:12px}.term-def{font-size:11px}.term-name{font-size:18px}.term-en{font-size:9px}.bar-label,.record-row{font-size:10px}}
@media(max-width:760px){.intro-copy{font-size:12px}.eyebrow{font-size:9px}.welcome-meta{font-size:10px}.today-hero .hero-sub{font-size:11px}.hero-meta{font-size:9px}.primary-button,.text-link,.quiet-button,.secondary-button{font-size:10px}.section-heading p{font-size:9px}.week-cell .wday{font-size:8px}.week-cell .wdate{font-size:15px}.week-cell .day-label{font-size:7px}.next-title,.course-day-title{font-size:10px}.next-desc,.course-day-sub{font-size:9px}.subpage-head p{font-size:11px}.overview-cell span,.week-stat,.day-status{font-size:8px}.course-day{padding-top:12px;padding-bottom:12px}.lesson-objectives li{font-size:10px}.lesson-block p{font-size:11px}.lesson-block h2{font-size:20px}.formula-board .formula{font-size:16px}.formula-board .formula-note{font-size:8px}.quiz-question{font-size:11px}.answer-option{font-size:10px;padding:10px}.answer-feedback{font-size:10px}.aside-card p,.aside-card li{font-size:9px}.notebook p{font-size:10px}.notebook textarea{font-size:11px}.term-def{font-size:10px}.term-name{font-size:16px}.term-en{font-size:8px}}

/* Quiet editorial refresh: fewer boxes, one visual anchor, consistent rhythm. */
.sidebar{width:232px;padding:30px 18px 20px}
.brand{margin-bottom:42px}
.side-nav{gap:2px}
.side-link{padding:11px 12px;border-radius:7px;color:var(--ink-2);font-size:12px}
.side-link:hover{background:#ebe8df;color:var(--ink)}
.side-link.active{position:relative;background:#e9e5da;color:var(--ink);font-weight:600}
.side-link.active:before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:2px;background:var(--acid);border-radius:2px}
.main-area{margin-left:232px;padding:0 52px 70px}
.screen{max-width:1000px}
.topbar{height:64px}
.page-wrap{padding:34px 0 42px}
.home-intro{padding:33px 0 23px;border-bottom:1px solid var(--line)}
.home-intro-row{display:flex;align-items:end;justify-content:space-between;gap:26px;margin-top:10px}
.home-intro .hero-title{font-size:clamp(38px,4.2vw,52px);margin:0;white-space:nowrap}
.home-intro .intro-copy{max-width:330px;padding-bottom:4px;font-size:12px;line-height:1.85}
.today-hero{min-height:250px;margin-top:23px;border-radius:14px;grid-template-columns:1.2fr .8fr}
.hero-copy{padding:30px 32px}
.today-hero h2{font-size:clamp(25px,3vw,34px);max-width:410px;margin:18px 0 8px}
.today-hero .hero-sub{font-size:12px;max-width:390px}
.hero-meta{gap:18px;margin-top:15px;font-size:10px}
.hero-cta-row{margin-top:21px;gap:17px}
.primary-button,.secondary-button{border-radius:6px;padding:11px 16px}
.primary-button{background:var(--acid);color:#1b2930}
.primary-button:hover{background:#d7bd8e}
.home-progress{display:grid;grid-template-columns:minmax(180px,1fr) auto auto;gap:27px;align-items:center;padding:18px 2px 22px;border-bottom:1px solid var(--line)}
.home-progress-main{min-width:0}
.home-progress-label{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:11px}
.home-progress-label strong{color:var(--ink);font:400 20px var(--serif)}
.home-progress-label small{font:400 11px var(--sans);color:var(--muted)}
.home-progress-track{height:3px;margin-top:10px;background:#dfdbd1;border-radius:5px;overflow:hidden}
.home-progress-track i{display:block;height:100%;background:var(--green);border-radius:5px;transition:width .35s}
.home-progress-due{display:flex;align-items:baseline;gap:7px;padding-left:24px;border-left:1px solid var(--line);color:var(--muted);font-size:10px;white-space:nowrap}
.home-progress-due strong{font:400 21px var(--serif);color:var(--ink)}
.home-progress>.quiet-button{white-space:nowrap;font-size:10px}
.home-week .section-heading{margin:29px 0 13px}
.home-week .section-heading h2{font-size:22px}
.week-strip{grid-template-columns:repeat(var(--week-length,7),minmax(0,1fr));gap:7px;border:0}
.week-cell{padding:12px 7px 10px;border:1px solid transparent;border-radius:9px;background:transparent}
.week-cell:hover{background:#ece9e1}
.week-cell.today{background:var(--white);border-color:var(--line);box-shadow:inset 0 -2px var(--acid)}
.week-cell.complete{background:#ece9e1}
.week-cell.complete .week-dot{background:var(--green);border-color:var(--green);color:#fff}
.week-cell .wday{font-size:9px;letter-spacing:.03em}
.week-cell .wdate{font-size:18px;margin:7px 0}
.week-cell .day-label{font-size:9px;line-height:1.4;white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;min-height:25px}
.week-dot{height:15px;width:15px}
.home-bottom{display:grid;grid-template-columns:minmax(0,1fr) minmax(250px,.7fr);gap:36px;align-items:stretch;margin-top:26px}
.principle-card{min-height:142px;padding:19px 21px;border-radius:11px;background:#eae6dc}
.principle-card p{font-size:19px;line-height:1.45;margin:16px 0 10px}
.principle-card small{font-size:9px}
.home-shortcuts{display:flex;flex-direction:column;justify-content:center;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.home-shortcuts button{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;padding:15px 2px;border:0;border-bottom:1px solid var(--line);background:transparent;text-align:left}
.home-shortcuts button:last-child{border-bottom:0}
.home-shortcuts button span{font-size:11px;color:var(--muted)}
.home-shortcuts button strong{font-size:11px;font-weight:500;color:var(--green)}
/* Course map: let the content breathe without nesting panels inside panels. */
.subpage-head{padding:28px 0 20px;margin-bottom:23px}
.subpage-head h1{font-size:clamp(34px,4vw,43px);margin:12px 0 9px}
.subpage-head p{font-size:12px;line-height:1.85;max-width:650px}
.course-overview{display:none}
.week-block{margin:0 0 24px;border:0;border-top:1px solid var(--line);background:transparent}
.week-head{padding:14px 2px;background:transparent;border-bottom:1px solid var(--line)}
.week-number{background:#e6e0d3;color:var(--green)}
.course-day{grid-template-columns:45px minmax(0,1fr) auto;padding:13px 8px;border-bottom:1px solid #e4e0d7}
.course-day:hover{background:#f8f6f0}
.course-day.current{background:#eee9dd}
.day-status{border-radius:99px;padding:5px 9px}
/* Lesson: keep one reading column and a quiet tool rail. */
.lesson-page{max-width:940px}
.lesson-toolbar{padding:18px 0 13px}
.lesson-heading{padding:27px 0 17px}
.lesson-heading h1{font-size:clamp(32px,4vw,45px)}
.lesson-heading p{font-size:12px}
.lesson-objectives{background:#eae6dc;border:0;border-radius:9px;margin:10px 0 23px;padding:15px 17px}
.lesson-objectives li{font-size:11px}
.lesson-layout{grid-template-columns:minmax(0,1fr) 215px;gap:42px}
.lesson-article{max-width:690px}
.lesson-block{margin:0 0 30px}
.lesson-block h2{font-size:22px;margin-bottom:9px}
.lesson-block p{font-size:13px;line-height:1.95;color:var(--ink-2)}
.formula-board{margin-top:14px;border-left:2px solid var(--acid);background:#f8f6f0;border-radius:0 8px 8px 0;padding:15px 17px}
.lesson-quiz{border:1px solid var(--line);border-radius:11px;background:var(--white);padding:20px 21px;margin:27px 0}
.lesson-quiz .quiz-question{font-size:13px;line-height:1.8}
.answer-option{border-radius:7px;padding:12px 13px;font-size:11px}
.study-aside{border-left:0;padding:0;gap:0}
.aside-card{padding:14px 0;border-bottom:1px solid var(--line)}
.aside-card:first-child{padding:15px;background:#eae6dc;border:0;border-radius:10px;text-align:center}
.aside-card:first-child h3{margin:0;color:var(--muted);font-size:10px;letter-spacing:.08em;text-transform:uppercase}
.aside-card:first-child p{font:400 30px var(--serif);margin:8px 0 2px;color:var(--green)}
.aside-card:not(:first-child) h3{font-size:12px;color:var(--ink)}
.aside-card:not(:first-child) p{font-size:11px;line-height:1.75}
.notebook{border:0;border-radius:10px;background:#eae6dc;padding:17px 18px}
.notebook textarea{border-radius:6px;background:#fbfaf6;font-size:12px;min-height:105px}
.lesson-footer{gap:10px;margin-top:20px}
/* Same shape and contrast for practice, review, and records. */
.practice-card,.progress-hero{border-radius:12px;padding:25px 27px}
.practice-card h2{font-size:29px}
.practice-card p{font-size:11px;line-height:1.85}
.result-panel,.progress-panel,.review-stage{border-radius:10px}
.review-stage{background:var(--white);border-color:var(--line)}
.review-controls button{border-radius:6px}
.progress-grid{gap:36px}
.progress-panel{border-top-color:var(--line)}
.settings-row button{font-size:10px}
.notebook-head h2{font-size:19px}
/* Mobile: one-column rhythm, readable controls, no squeezed panels. */
@media(max-width:760px){
 .main-area{margin-left:0;padding:0 18px calc(82px + var(--safe))}
 .topbar{margin:0 -18px;padding:0 18px;height:56px}
 .mobile-brand{letter-spacing:.04em;font-weight:600;flex:none}
 .top-actions{flex:1;justify-content:flex-end;min-width:0}
 .date-button{white-space:nowrap;flex:none}
 .page-wrap{padding:20px 0 27px}
 .home-intro{padding:20px 0 17px}
 .home-intro-row{display:block;margin-top:9px}
 .home-intro .hero-title{font-size:clamp(30px,9vw,35px);white-space:nowrap;letter-spacing:-.045em}
 .home-intro .intro-copy{font-size:11px;line-height:1.7;margin-top:8px}
 .today-hero{display:block;position:relative;min-height:284px;margin-top:16px;border-radius:12px;overflow:hidden}
 .hero-copy{padding:21px 19px;position:relative;z-index:2}
 .hero-kicker{font-size:9px}
 .hero-kicker b{font-size:9px;padding:5px 8px}
 .today-hero h2{font-size:25px;line-height:1.24;max-width:265px;margin:15px 0 7px}
 .today-hero .hero-sub{font-size:11px;max-width:265px;line-height:1.7}
 .hero-meta{font-size:9px;gap:11px;margin-top:12px}
 .hero-cta-row{gap:13px;margin-top:16px;position:relative;z-index:2}
 .primary-button,.secondary-button{font-size:11px;padding:11px 13px}
 .text-link{font-size:10px}
 .hero-visual{position:absolute;right:-38px;bottom:-10px;width:56%;height:54%;opacity:.24;z-index:1}
 .orbital{width:100%;max-height:none}
 .orbital-label{font-size:9px}
 .orbital-note{font-size:6px;right:10px;bottom:8px}
 .home-progress{grid-template-columns:minmax(0,1fr) auto;gap:12px 17px;padding:15px 1px 16px}
 .home-progress-main{grid-column:1;grid-row:1 / span 2}
 .home-progress-label{font-size:10px}
 .home-progress-label strong{font-size:19px}
 .home-progress-track{margin-top:7px}
 .home-progress-due{grid-column:2;grid-row:1;justify-content:flex-end;padding-left:12px;gap:5px;font-size:9px}
 .home-progress-due strong{font-size:18px}
 .home-progress>.quiet-button{grid-column:2;grid-row:2;justify-self:end;font-size:9px;padding:0}
 .home-week .section-heading{margin:23px 0 10px;align-items:center}
 .home-week .section-heading h2{font-size:18px}
 .home-week .section-heading p{font-size:10px}
 .home-week .section-heading .quiet-button{font-size:9px}
 .week-strip{gap:3px}
 .week-cell{padding:9px 2px 8px;border-radius:7px}
 .week-cell .wday{font-size:8px}
 .week-cell .wdate{font-size:16px;margin:6px 0}
 .week-cell .day-label{display:none}
 .week-dot{width:13px;height:13px}
 .home-bottom{grid-template-columns:1fr;gap:12px;margin-top:17px}
 .principle-card{min-height:0;padding:15px 16px}
 .principle-card p{font-size:17px;margin:10px 0 7px}
 .home-shortcuts{display:grid;grid-template-columns:1fr 1fr;gap:10px;border:0}
 .home-shortcuts button{display:block;padding:10px 11px;border:1px solid var(--line);border-radius:8px;background:#f8f6f0}
 .home-shortcuts button span,.home-shortcuts button strong{display:block;font-size:10px}
 .home-shortcuts button strong{margin-top:5px}
 .subpage-head{padding:22px 0 16px;margin-bottom:17px}
 .subpage-head h1{font-size:32px}
 .subpage-head p{font-size:11px;line-height:1.75}
 .week-block{margin-bottom:19px}
 .week-head{padding:11px 1px}
 .week-head-left{gap:8px}
 .week-head h2{font-size:15px}
 .week-head p{font-size:9px;line-height:1.5}
 .week-stat{font-size:9px}
 .course-day{grid-template-columns:35px minmax(0,1fr);padding:11px 5px;gap:7px}
 .course-day-title{font-size:11px;line-height:1.4}
 .course-day-sub{font-size:9px;line-height:1.45}
 .day-status{display:none}
 .lesson-page{max-width:none}
 .lesson-toolbar{padding:14px 0 10px}
 .lesson-heading{padding:20px 0 13px}
 .lesson-heading h1{font-size:30px;line-height:1.2}
 .lesson-heading p{font-size:11px}
 .lesson-objectives{grid-template-columns:1fr;gap:7px;padding:12px 13px;margin:9px 0 18px}
 .lesson-objectives ul{gap:6px 12px}
 .lesson-objectives li{font-size:10px}
 .lesson-layout{grid-template-columns:1fr;gap:18px}
 .lesson-block{margin-bottom:24px}
 .lesson-block h2{font-size:19px}
 .lesson-block p{font-size:12px;line-height:1.9}
 .formula-board{padding:12px 13px}
 .formula-board .formula{font-size:15px;line-height:1.55}
 .lesson-quiz{padding:15px 14px;margin:20px 0}
 .lesson-quiz .quiz-question{font-size:12px}
 .answer-option{font-size:11px;padding:11px 10px}
 .study-aside{grid-template-columns:1fr 1fr;gap:0 14px}
 .aside-card:first-child{grid-column:1 / -1;margin-bottom:7px}
 .aside-card{padding:10px 0}
 .notebook{padding:13px}
 .notebook textarea{font-size:12px}
 .lesson-footer{display:grid;grid-template-columns:1fr 1fr;gap:8px}
 .lesson-footer .primary-button{grid-column:1 / -1;grid-row:1}
 .review-layout{grid-template-columns:1fr;gap:14px}
 .review-stage{min-height:210px}
 .review-controls{gap:6px}
 .review-controls button{font-size:9px;padding:10px 5px}
 .progress-hero{padding:16px;border-radius:10px}
 .progress-hero h2{font-size:20px}
 .progress-hero p{font-size:10px;line-height:1.6}
 .progress-grid{grid-template-columns:1fr;gap:18px}
 .bar-label{font-size:9px}
 .settings-row{gap:7px}
 .settings-row button{font-size:10px}
 .mobile-nav{padding-top:7px;background:#f3f1eaf5;box-shadow:0 -6px 20px #1b293010}
 .mobile-link{font-size:9px}
 .mobile-link.active{color:var(--green);font-weight:600}
 .toast{bottom:calc(78px + var(--safe))}
}
@media(min-width:761px) and (max-width:1050px){
 .home-intro-row{display:block}
 .home-intro .hero-title{white-space:normal}
 .home-intro .intro-copy{max-width:520px;margin-top:9px}
 .today-hero{grid-template-columns:1.12fr .88fr}
}
@media(min-width:761px) and (max-width:900px){
 .progress-grid{grid-template-columns:1fr;gap:22px}
 .lesson-layout{grid-template-columns:1fr;gap:20px}
 .lesson-article{max-width:none}
 .study-aside{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 22px}
 .aside-card:first-child{grid-column:1 / -1}
 .review-layout{grid-template-columns:1fr;gap:18px}
 .queue-panel{margin-top:0}
 .bar-label{font-size:10px}
}