@font-face{font-family:Barlow;src:url('/assets/fonts/Barlow-Regular.ttf') format('truetype');font-display:swap;font-weight:400}@font-face{font-family:Barlow;src:url('/assets/fonts/Barlow-SemiBold.ttf') format('truetype');font-display:swap;font-weight:600}
:root{--bg:#f4f5f1;--surface:#fff;--ink:#222b26;--muted:#68746b;--line:#dce1d8;--soft:#edf0e8;--accent:#c1ed79;--green:#326443;--sidebar:222px;color-scheme:light}html[data-theme=dark]{--bg:#181d1a;--surface:#202822;--ink:#e5eddf;--muted:#acb8aa;--line:#39453a;--soft:#2a342c;--green:#bbdf9b;color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 Barlow,Arial,sans-serif}button,input,textarea{font:inherit}button,a,input,textarea{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{cursor:pointer;color:inherit}button{background:none;border:0}button:disabled{cursor:default}button,a{touch-action:manipulation}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--green);outline-offset:4px}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:600;line-height:1.13}h1{font-size:clamp(32px,3.2vw,48px);letter-spacing:-1.5px}h2{font-size:28px;letter-spacing:-.7px}h3{font-size:20px;letter-spacing:-.2px}.icon{height:21px;width:21px;flex-shrink:0;vertical-align:middle}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.skip{position:fixed;top:-100px;left:12px;padding:12px;background:var(--accent);color:#233224;z-index:30}.skip:focus{top:10px}.sidebar{position:fixed;inset:0 auto 0 0;width:var(--sidebar);background:var(--surface);border-right:1px solid var(--line);padding:31px 20px 20px;display:flex;flex-direction:column;overflow:auto}.brand{display:flex;gap:11px;align-items:center;font-size:29px;font-weight:600;letter-spacing:-1.4px;margin:0 8px 39px}.brand>span>span{font-weight:400}.brand b{color:var(--green);padding-left:2px}.brand-mark{display:grid;gap:4px;width:25px}.brand-mark i{height:5px;background:var(--green)}.brand-mark i:nth-child(2){width:19px}.brand-mark i:nth-child(3){width:12px}.nav-label{font-size:10px;letter-spacing:1.6px;color:var(--muted);margin:0 13px 13px}nav{display:grid;gap:5px}nav a{display:flex;align-items:center;gap:12px;padding:11px 13px;border-radius:6px;font-size:14px;color:var(--muted)}nav a:hover{background:var(--soft);color:var(--ink)}nav a[aria-current]{background:var(--soft);color:var(--ink);font-weight:600}nav a[aria-current]>span:first-child{color:var(--green)}.nav-tag,.nav-count{margin-left:auto;font-size:10px;background:var(--surface);border:1px solid var(--line);padding:0 5px;border-radius:4px;color:var(--muted)}.sidebar-subjects{margin-top:32px;padding-top:26px;border-top:1px solid var(--line)}#subject-links{display:grid;gap:1px}.subject-link{display:flex;align-items:center;gap:12px;padding:7px 13px;font-size:13px;color:var(--muted)}.subject-link:hover{color:var(--ink)}.subject-dot{width:7px;height:7px;background:var(--tone);border-radius:2px}.sidebar-bottom{margin-top:auto;padding-top:35px}.side-quote{display:flex;gap:8px;font-size:12px;color:var(--muted);padding:15px 12px}.side-quote>span{color:var(--green);font-size:25px}.side-quote strong{color:var(--ink);font-weight:400}.publisher{display:flex;justify-content:space-between;padding:18px 12px 0;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.workspace{margin-left:var(--sidebar)}.topbar{height:85px;margin:0 40px;display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--line)}.breadcrumb{font-size:12px;margin-right:auto;color:var(--muted)}.breadcrumb span{padding:0 10px;color:#9aa397}#search-form{display:flex;align-items:center;gap:9px;border:1px solid var(--line);padding:8px 12px;border-radius:6px;background:var(--surface);width:270px}#search-form .icon{height:16px;width:16px;color:var(--muted)}#search{border:0;background:transparent;min-width:0;width:100%;color:var(--ink);font-size:12px}kbd{font-size:11px;color:var(--muted);padding:0 4px;border:1px solid var(--line);border-radius:3px}.theme-button{height:34px;width:34px;display:grid;place-items:center}.profile-mark{display:grid;place-items:center;background:var(--soft);border:1px solid var(--line);border-radius:50%;width:30px;height:30px;font-size:11px}main{max-width:1460px;margin:auto;padding:39px 40px 60px;min-height:calc(100vh - 160px)}main:focus{outline:none}.eyebrow{font-size:10px;font-weight:600;letter-spacing:1.7px;line-height:1.6;color:var(--muted)}.home-heading{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:29px;gap:20px}.home-heading h1{font-size:clamp(30px,2.8vw,42px);margin-top:11px}.home-heading h1 span,.page-heading h1>span{color:var(--muted)}.status-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--green);margin:0 7px 1px 0}.edition{font-size:9px;letter-spacing:1px;line-height:1.9;text-align:right;color:var(--muted);padding-bottom:3px}.edition b{font-weight:400;color:var(--ink)}.home-hero{background:#223027;border:1px solid #364438;display:grid;grid-template-columns:1fr 1.2fr;border-radius:10px;overflow:hidden;color:#f1f5e9}.hero-copy{padding:30px 32px 28px}.tag{font-size:9px;letter-spacing:1.1px;display:inline-block;padding:5px 8px;border:1px solid var(--line);border-radius:3px}.dark-tag{color:#ccdcbd;border-color:#51614b}.hero-copy h2{font-size:clamp(34px,3.2vw,49px);letter-spacing:-1.5px;margin:19px 0 15px;line-height:1.04}.hero-copy h2>span{color:var(--accent)}.hero-copy>p{font-size:14px;color:#bdcdbd;max-width:310px;line-height:1.7}.button{display:inline-flex;justify-content:center;align-items:center;gap:16px;min-height:43px;padding:10px 17px;border-radius:5px;font-size:14px;font-weight:600;border:1px solid transparent;line-height:1.3}.primary{background:var(--ink);color:var(--surface)}.lime-button{background:var(--accent);color:#253522}.hero-copy .button{margin-top:24px}.button .icon,.text-link .icon,.card-link .icon{width:17px;height:17px}.secondary{background:var(--surface);border-color:var(--line);color:var(--ink)}.button:hover{filter:brightness(.94)}.hero-copy>small{display:flex;align-items:center;gap:7px;color:#a9bba6;font-size:10px;margin-top:11px}.hero-copy>small .icon{height:12px;width:12px}.concept-diagram{padding:23px;background:var(--soft);border:1px solid var(--line);border-radius:7px;margin:25px 0}.hero-diagram{margin:0;border:0;border-left:1px solid #3e4d3f;border-radius:0;padding:34px 25px;background-color:#28372b;background-image:linear-gradient(#ffffff04 1px,transparent 1px),linear-gradient(90deg,#ffffff04 1px,transparent 1px);background-size:24px 24px;display:flex;flex-direction:column;justify-content:center}.diagram-title{display:flex;justify-content:space-between;gap:10px;font-size:8px;letter-spacing:1px;color:var(--muted);margin-bottom:27px}.hero-diagram .diagram-title{color:#b1c4a9}.diagram-nodes{display:flex;align-items:center;gap:9px}.diagram-node{position:relative;flex:1;min-width:0;padding:18px 9px 14px;background:var(--surface);border:1px solid var(--line);border-radius:5px;display:flex;flex-direction:column;align-items:center;gap:8px}.diagram-node small{position:absolute;top:6px;left:7px;font-size:8px;color:var(--muted)}.node-symbol{margin-top:8px}.node-symbol>.icon{height:30px;width:30px}.diagram-node strong{font-size:12px;line-height:1.3;text-align:center;font-weight:600;overflow-wrap:anywhere}.node-dot{width:4px;height:4px;background:var(--line);border-radius:50%;margin-top:4px}.diagram-node.selected{border-color:var(--green)}.diagram-node.selected .node-dot{background:var(--green)}.diagram-connector{font-size:20px;color:var(--muted)}.hero-diagram .diagram-node{background:#2d3d30;border-color:#52654f;color:#e4eedc}.hero-diagram .diagram-node.selected{background:#c1ed79;border-color:#c1ed79;color:#263b26}.hero-diagram .diagram-node small{color:#9db295}.hero-diagram .diagram-node.selected small{color:#456040}.hero-diagram .diagram-node.selected .node-dot{background:#34522d}.hero-diagram .diagram-connector{color:#a0b290}.diagram-explanation{display:flex;gap:12px;margin-top:23px;min-height:95px;padding-top:17px;border-top:1px solid var(--line);font-size:13px;line-height:1.65}.diagram-corner{font-size:25px;color:var(--green)}.diagram-explanation b{font-weight:600}.hero-diagram .diagram-explanation{border-color:#4b5e47;color:#bcd0b5;font-size:12px}.hero-diagram .diagram-corner{color:var(--accent)}.diagram-caption{font-size:10px!important;color:var(--muted);margin-top:10px}.hero-diagram .diagram-caption{color:#9cae96}.overview-strip{display:grid;grid-template-columns:1fr 1fr 1fr 1.5fr;border-bottom:1px solid var(--line);padding:24px 0;gap:20px}.overview-strip>div{display:flex;gap:10px;align-items:center}.overview-strip>div>b{font-size:24px;font-weight:600}.overview-strip>div>span{font-size:11px;line-height:1.5;max-width:90px;color:var(--muted)}.overview-strip .reading-progress{display:block;border-left:1px solid var(--line);padding-left:22px}.reading-progress>div:first-child{display:flex;justify-content:space-between;font-size:10px;margin-bottom:10px}.reading-progress b{font-weight:400}.track{height:3px;background:var(--line);border-radius:2px;overflow:hidden}.track i{display:block;height:100%;background:var(--green)}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:22px}.section-heading .eyebrow{margin-bottom:6px}.section-heading h2{font-size:25px}.section-heading h2>span,.path-heading h1>span,.article-heading h1>span{color:var(--green)}.text-link{display:inline-flex;align-items:center;gap:10px;font-size:12px;color:var(--green);font-weight:600}.text-link:hover{text-decoration:underline}.paths-section{padding-top:36px}.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.tone-lime{--tone:#8eaf53;--tint:#eef5dd}.tone-blue{--tone:#6595c3;--tint:#eaf1fa}.tone-purple{--tone:#9e89bf;--tint:#f0ebf7}.tone-orange{--tone:#c79854;--tint:#faf0e1}.tone-rose{--tone:#c5858e;--tint:#f8eaf0}.tone-teal{--tone:#5b9f95;--tint:#e6f4ef}.topic-card{padding:22px;border:1px solid var(--line);border-radius:7px;background:var(--surface);display:flex;flex-direction:column}.topic-card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.topic-symbol{display:grid;place-items:center;width:40px;height:40px;background:var(--tint);color:#3e5141;border-radius:7px}.topic-index{font-size:9px;color:var(--muted);letter-spacing:1px}.topic-card h3{font-size:20px;margin-bottom:9px}.topic-card>p{font-size:13px;color:var(--muted);line-height:1.65;margin-bottom:24px;min-height:64px}.topic-meta{display:flex;justify-content:space-between;font-size:9px;color:var(--muted);margin-top:auto;margin-bottom:9px}.topic-card .track{height:2px}.topic-card .track i{background:var(--tone)}.card-link{display:flex;justify-content:space-between;font-size:12px;font-weight:600;border-top:1px solid var(--line);margin-top:19px;padding-top:13px}.card-link:hover{color:var(--green)}.connection-note{display:flex;gap:20px;align-items:center;background:var(--soft);border:1px solid var(--line);border-radius:7px;padding:26px;margin-top:26px}.connection-symbol{width:52px;height:52px;border:1px solid var(--line);display:grid;place-items:center;border-radius:50%;flex-shrink:0}.connection-note h2{font-size:21px;margin:5px 0 8px}.connection-note p:not(.eyebrow){font-size:12px;color:var(--muted)}.connection-note>.button{margin-left:auto;flex-shrink:0;font-size:11px}footer{display:flex;align-items:center;gap:22px;margin:0 40px;padding:19px 0;border-top:1px solid var(--line);font-size:10px;color:var(--muted)}footer>span:first-child{margin-right:auto}footer>span:last-child{margin-left:auto}footer i{font-style:normal;padding:0 8px}footer button{padding:5px 0;font-size:10px}footer button:hover{color:var(--ink)}.page-heading{margin:13px 0 36px}.page-heading h1{margin:12px 0 18px}.page-heading>p:last-child{color:var(--muted);font-size:16px;max-width:680px}.learning-order{border-top:1px solid var(--line);margin-top:35px;padding-top:30px;max-width:780px}.learning-order h2{font-size:24px;margin:10px 0}.learning-order>p:last-child{color:var(--muted)}.page-back{margin-bottom:22px}.path-heading{display:flex;align-items:center;gap:24px;border-bottom:1px solid var(--line);padding:12px 0 34px;margin-bottom:30px}.path-icon{display:grid;place-items:center;background:var(--tint);color:#344b3a;border:1px solid var(--tone);height:84px;width:84px;border-radius:13px;flex-shrink:0}.path-icon .icon{width:40px;height:40px}.path-heading h1{margin:8px 0 12px;font-size:40px}.path-heading p:last-child{color:var(--muted);max-width:560px;font-size:15px}.path-count{margin-left:auto;font-size:42px;font-weight:600;min-width:100px}.path-count small{display:block;font-size:12px;color:var(--muted);font-weight:400}.path-layout{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:34px}.path-layout .section-heading{flex-wrap:wrap;gap:8px}.path-layout .section-heading h2{font-size:21px}.subtle{font-size:11px;color:var(--muted)}.chapter-list{border:1px solid var(--line);border-radius:7px;overflow:hidden;background:var(--surface)}.chapter-row{display:flex;align-items:center;gap:19px;padding:23px;border-bottom:1px solid var(--line)}.chapter-row:last-child{border:0}.chapter-row:hover{background:var(--soft)}.chapter-number{font-size:12px;color:var(--muted);background:var(--soft);height:33px;width:33px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;flex-shrink:0}.read .chapter-number{background:var(--accent);border-color:var(--accent);color:#293f27}.chapter-number .icon{height:16px;width:16px}.chapter-row h3{font-size:18px;margin-bottom:7px}.chapter-row p{font-size:13px;color:var(--muted);max-width:550px}.chapter-time{margin-left:auto;display:flex;align-items:center;gap:15px;white-space:nowrap;font-size:10px;color:var(--muted)}.chapter-time .icon{width:16px;height:16px}.path-aside{background:var(--soft);padding:24px;height:fit-content;border-radius:7px;border:1px solid var(--line)}.path-aside h3{margin:9px 0 14px;font-size:22px}.path-aside>p:not(.eyebrow){font-size:14px;line-height:1.8;color:var(--muted)}.aside-divider{height:1px;background:var(--line);margin:22px 0}.path-aside .small-note{font-size:11px!important;padding-top:20px}.path-next{display:flex;justify-content:flex-end;margin-top:22px}.reader-top{display:flex;align-items:center;gap:25px;padding:4px 0 23px;border-bottom:1px solid var(--line);margin-bottom:30px}.reader-top>span{font-size:11px;color:var(--muted);margin-left:auto}.save-button{display:flex;gap:8px;align-items:center;border:1px solid var(--line);padding:8px 12px;font-size:11px;border-radius:5px;background:var(--surface)}.save-button .icon{height:16px;width:16px}.save-button.saved{background:var(--accent);color:#293f27}.reader-layout{display:grid;grid-template-columns:minmax(0,750px) 220px;gap:50px;justify-content:center}.reading-article{min-width:0}.article-heading h1{font-size:42px;margin:13px 0 19px;line-height:1.08}.article-heading>p:last-child{font-size:19px;color:var(--muted);line-height:1.65}.article-heading .eyebrow span{margin:0 12px}.learning-goal{display:flex;gap:15px;margin:26px 0 40px;padding:20px;background:var(--soft);border-left:3px solid var(--green);border-radius:0 5px 5px 0}.learning-goal b{font-size:13px;font-weight:600}.learning-goal p{font-size:15px;color:var(--muted);margin-top:4px}.learning-goal>span{color:var(--green)}.article-section{margin:38px 0;scroll-margin-top:30px}.section-number{font-size:10px;letter-spacing:1.5px;color:var(--muted);margin-bottom:9px}.article-section h2{font-size:28px;margin-bottom:17px}.article-section>p:not(.section-number){font-size:18px;line-height:1.9;max-width:70ch}.analogy{padding:24px;margin-top:27px;background:var(--surface);border:1px solid var(--line);border-radius:6px}.analogy>p:last-child{font-size:17px;line-height:1.8;margin-top:10px}.misconception{display:flex;gap:15px;padding:23px;border:1px solid var(--line);border-top:3px solid #bd9865;border-radius:5px;background:var(--surface);margin:40px 0}.misconception>span{color:#b88b4f}.misconception h3{font-size:19px;margin-bottom:8px}.misconception p{font-size:16px;line-height:1.8;color:var(--muted)}.article-summary{background:var(--soft);padding:27px;border-radius:6px;margin:38px 0;scroll-margin-top:25px}.article-summary h2{margin:10px 0 20px}.article-summary ul{margin:0;padding:0;list-style:none;display:grid;gap:16px}.article-summary li{display:flex;gap:12px;font-size:16px}.article-summary li .icon{color:var(--green);margin-top:3px}.knowledge-check{padding:24px 0;scroll-margin-top:20px}.knowledge-check h2{margin:10px 0 13px}.knowledge-check>p:not(.eyebrow){font-size:15px;color:var(--muted)}.question-card{margin-top:23px;padding:24px;border:1px solid var(--line);background:var(--surface);border-radius:7px}.question-card h3{font-size:19px;line-height:1.5;margin-bottom:19px}.question-options{display:grid;gap:9px}.question-options button{display:flex;justify-content:space-between;align-items:center;gap:10px;text-align:left;border:1px solid var(--line);border-radius:4px;padding:13px;font-size:15px;line-height:1.5}.question-options button:hover{background:var(--soft)}.question-options .selected{border-color:var(--green);background:var(--soft)}.question-feedback{padding:16px;margin-top:17px;border-radius:4px;background:var(--soft);border-left:3px solid #b48c51;font-size:15px}.question-feedback.correct{border-color:var(--green)}.question-feedback p{margin-top:5px;color:var(--muted)}.article-notes{margin:30px 0;scroll-margin-top:20px}.article-notes .section-heading{align-items:flex-end}.article-notes h2{font-size:24px}.article-notes #note-status{font-size:10px;color:var(--muted);white-space:nowrap}.article-notes textarea{width:100%;resize:vertical;min-height:150px;border:1px solid var(--line);border-radius:5px;background:var(--surface);color:var(--ink);padding:17px;line-height:1.8}.article-notes>p{font-size:11px;color:var(--muted);margin-top:8px}.article-sources{margin:32px 0;padding:25px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.article-sources h3{font-size:15px;margin-bottom:13px}.article-sources a{display:block;font-size:13px;color:var(--green);padding:5px 0;text-decoration:underline}.article-sources p{color:var(--muted);font-size:11px;margin-top:13px}.chapter-finish{display:flex;justify-content:space-between;gap:15px;align-items:center;margin-bottom:20px}.reader-toc{position:sticky;top:26px;align-self:start}.reader-toc>p{margin-bottom:13px}.reader-toc>button{display:flex;gap:12px;text-align:left;font-size:10px;color:var(--muted);padding:12px 0;border-bottom:1px solid var(--line);width:100%}.reader-toc>button span{font-size:12px;color:var(--ink)}.reader-toc>button:hover span{color:var(--green)}.toc-terms{padding-top:31px}.toc-terms>div{margin-top:18px}.toc-terms b{font-size:13px;font-weight:600}.toc-terms>div p{font-size:12px;color:var(--muted);line-height:1.7;margin-top:4px}.glossary-search{display:flex;align-items:center;gap:15px;padding:8px 10px 8px 17px;border:1px solid var(--line);background:var(--surface);border-radius:6px;max-width:660px}.glossary-search input{background:none;border:0;color:var(--ink);flex:1;min-width:0;font-size:15px}.glossary-search .icon{color:var(--muted);height:18px;width:18px}.topic-tabs{display:flex;flex-wrap:wrap;gap:8px;margin:26px 0}.topic-tabs a{font-size:12px;border:1px solid var(--line);border-radius:5px;padding:8px 14px}.topic-tabs a:hover{background:var(--soft)}.topic-tabs a.selected{background:var(--ink);color:var(--surface);border-color:var(--ink)}.result-count{font-size:11px;color:var(--muted);margin-bottom:16px}.glossary-list{border-top:1px solid var(--line)}.glossary-list article{display:flex;gap:22px;padding:24px 0;border-bottom:1px solid var(--line);align-items:start}.term-letter{width:37px;height:37px;background:var(--soft);border:1px solid var(--line);border-radius:6px;display:grid;place-items:center;font-size:16px;flex-shrink:0}.glossary-list h2{font-size:21px;margin-bottom:8px}.glossary-list p{font-size:15px;max-width:660px;color:var(--muted)}.term-topic{display:block;font-size:10px;margin-top:8px;color:var(--green)}.glossary-list .text-link{margin-left:auto;white-space:nowrap;font-size:11px}.empty-state{text-align:center;max-width:680px;margin:45px auto;padding:50px 25px;border:1px dashed var(--line);border-radius:8px}.empty-state>span>.icon{width:35px;height:35px;color:var(--muted);margin-bottom:19px}.empty-state h2{font-size:27px;margin-bottom:12px}.empty-state p{font-size:15px;color:var(--muted)}.empty-state .button{margin-top:22px}.notes-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.notes-grid article{padding:25px;border:1px solid var(--line);background:var(--surface);border-radius:7px}.notes-grid h2{font-size:22px;margin:10px 0 15px}.note-preview{font-size:15px;line-height:1.7;white-space:pre-wrap;overflow-wrap:anywhere;color:var(--muted);margin-bottom:22px}.progress-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:35px}.progress-stats>div{border:1px solid var(--line);border-radius:6px;background:var(--surface);padding:23px}.progress-stats b{display:block;font-size:39px;font-weight:600}.progress-stats small{font-size:18px;color:var(--muted);font-weight:400}.progress-stats span{font-size:12px;color:var(--muted)}.progress-topics{display:grid;gap:13px}.progress-topics article{display:flex;align-items:center;gap:20px;padding:19px;border:1px solid var(--line);border-radius:6px;background:var(--surface)}.progress-topics article>div{flex:1}.progress-topics h2{font-size:18px;margin-bottom:12px}.progress-topics b{font-size:12px;color:var(--muted);font-weight:400}.storage-panel{display:flex;justify-content:space-between;align-items:center;gap:30px;margin-top:35px;padding:25px 0;border-top:1px solid var(--line)}.storage-panel h3{font-size:18px;margin-bottom:8px}.storage-panel p{font-size:13px;color:var(--muted);max-width:600px}.storage-panel button{flex-shrink:0}.danger{color:#ae5d53}.danger-button{background:#9e4f46;color:#fff}.search-results>h2{margin-bottom:10px}.search-results>p{color:var(--muted);margin-bottom:22px}.storage-warning{padding:15px;border:1px solid var(--line);background:var(--soft);font-size:13px;margin-bottom:20px}dialog{padding:32px;width:min(560px,calc(100vw - 32px));max-height:85vh;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:10px;overflow:auto}dialog::backdrop{background:#0e1b15a8}dialog h2{font-size:27px;margin:12px 0 20px}dialog p:not(.eyebrow){font-size:15px;line-height:1.8;margin:13px 0;color:var(--muted)}dialog a{text-decoration:underline;color:var(--green)}dialog>.button{margin-top:22px}#dialog-content>.button{margin-top:14px}.toast{position:fixed;bottom:25px;left:50%;transform:translate(-50%,20px);padding:12px 21px;background:var(--ink);color:var(--surface);border-radius:6px;opacity:0;pointer-events:none;transition:.2s;z-index:40;font-size:13px}.toast.visible{opacity:1;transform:translate(-50%,0)}
@media(min-width:1600px){main{padding-top:50px}.home-hero{grid-template-columns:1fr 1.3fr}.hero-copy{padding:40px}.hero-copy h2{font-size:54px}.hero-diagram{padding:40px}.diagram-node{padding-top:25px;padding-bottom:20px}.diagram-node strong{font-size:15px}.node-symbol>.icon{width:40px;height:40px}.hero-diagram .diagram-explanation{font-size:14px}.topic-card{padding:27px}.topic-card>p{font-size:15px}}
@media(max-width:1200px){:root{--sidebar:195px}.sidebar{padding-left:12px;padding-right:12px}.brand{font-size:26px}.topbar{margin:0 27px}.breadcrumb{font-size:11px}main{padding-left:27px;padding-right:27px}.hero-copy{padding:25px}.hero-copy h2{font-size:38px}.hero-diagram{padding:25px 17px}.diagram-nodes{gap:5px}.diagram-connector{font-size:16px}.topic-card{padding:18px}.topic-meta{font-size:8px}.topic-card>p{min-height:84px}.reader-layout{gap:30px;grid-template-columns:minmax(0,1fr) 180px}.path-layout{grid-template-columns:minmax(0,1fr) 220px;gap:22px}.path-heading h1{font-size:34px}.connection-note{flex-wrap:wrap}.connection-note>.button{margin-left:72px}footer{margin:0 27px;gap:15px}footer>span:first-child{max-width:180px}.article-heading h1{font-size:36px}}
@media(max-width:1000px){.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.topic-card>p{min-height:65px}.home-hero{grid-template-columns:1fr}.hero-copy{padding:30px}.hero-copy h2 br{display:none}.hero-copy h2{max-width:400px}.hero-copy>p{max-width:520px}.hero-diagram{border-top:1px solid #3e4d3f;border-left:0;padding:26px 30px}.hero-diagram .diagram-title{margin-bottom:18px}.hero-diagram .diagram-node{padding:18px}.hero-diagram .diagram-explanation{min-height:60px}.edition{display:none}.reader-layout{grid-template-columns:minmax(0,1fr)}.reader-toc{position:static;display:none}.path-layout{grid-template-columns:minmax(0,1fr)}.path-aside{margin-top:5px}.overview-strip{grid-template-columns:repeat(3,1fr)}.overview-strip .reading-progress{grid-column:1/-1;border-left:0;padding-left:0}.topbar .breadcrumb{display:none}#search-form{margin-right:auto;width:min(320px,100%)}.path-heading{gap:16px}.path-count{font-size:32px;min-width:60px}.path-icon{width:60px;height:60px}.path-icon .icon{width:28px;height:28px}.path-count small{font-size:10px}.chapter-finish{flex-wrap:wrap}footer{flex-wrap:wrap}footer>span:first-child{max-width:none;flex-basis:100%}footer>span:last-child{margin-left:auto}.glossary-list article{flex-wrap:wrap;gap:12px}.glossary-list article>div{flex:1;min-width:180px}.glossary-list .text-link{margin-left:49px}.notes-grid{grid-template-columns:1fr}.progress-stats{gap:10px}.progress-stats>div{padding:16px}.storage-panel{flex-wrap:wrap}}
@media(max-width:700px){.sidebar{position:static;width:auto;padding:18px 20px 0;border-right:0;border-bottom:1px solid var(--line);overflow:visible}.brand{margin:0 0 18px}.sidebar>.nav-label,.sidebar-subjects,.sidebar-bottom{display:none}.sidebar nav{display:flex;overflow-x:auto;gap:8px;padding-bottom:13px}.sidebar nav a{padding:9px 12px;white-space:nowrap;font-size:12px;gap:7px}.nav-tag,.nav-count{display:none}.sidebar .icon{width:16px;height:16px}.workspace{margin-left:0}.topbar{height:65px;margin:0 20px;gap:8px}#search-form{width:100%;padding:7px 10px}.profile-mark{display:none}main{padding:27px 20px 40px}.home-heading h1{font-size:31px}.home-hero{border-radius:7px}.hero-copy{padding:26px}.hero-copy h2{font-size:39px}.hero-diagram{padding:23px 18px}.diagram-title{font-size:7px;letter-spacing:.5px}.diagram-node{padding:16px 4px 10px}.hero-diagram .diagram-node{padding:16px 5px}.diagram-node strong{font-size:11px}.overview-strip{gap:12px}.overview-strip>div>b{font-size:23px}.overview-strip>div>span{font-size:9px}.section-heading{align-items:start;gap:12px}.section-heading h2{font-size:23px}.section-heading>.text-link{font-size:10px;white-space:nowrap;margin-top:8px}.topic-grid{gap:13px}.topic-card{padding:16px}.topic-card h3{font-size:19px}.topic-card>p{min-height:110px;font-size:12px}.topic-meta{flex-wrap:wrap;gap:4px}.topic-index{font-size:8px}.card-link{font-size:11px}.connection-note{padding:21px;gap:16px}.connection-symbol{display:none}.connection-note>.button{margin-left:0}.connection-note h2{font-size:23px}.page-heading h1{font-size:34px}.page-heading>p:last-child{font-size:15px}.path-heading{flex-wrap:wrap}.path-heading>div{flex:1;min-width:200px}.path-heading h1{font-size:32px}.path-count{display:none}.path-icon{width:49px;height:49px;border-radius:8px}.chapter-row{padding:18px 14px;gap:13px;flex-wrap:wrap}.chapter-row>div{flex:1;min-width:160px}.chapter-time{margin-left:46px}.chapter-row h3{font-size:18px}.reader-top{gap:12px;flex-wrap:wrap}.reader-top>.text-link{font-size:12px}.reader-top>span{font-size:10px}.save-button{font-size:10px;padding:8px}.article-heading h1{font-size:35px}.article-heading>p:last-child{font-size:18px}.article-heading .eyebrow{font-size:9px}.article-heading .eyebrow span{margin:0 6px}.article-section h2{font-size:25px}.article-section>p:not(.section-number){font-size:17px;line-height:1.85}.concept-diagram{padding:17px}.diagram-explanation{font-size:13px}.analogy,.misconception,.article-summary,.question-card{padding:20px}.article-notes .section-heading{flex-wrap:wrap}.article-notes .eyebrow{font-size:9px}.progress-stats{grid-template-columns:1fr}.progress-stats>div{display:flex;align-items:center;gap:20px}.progress-stats b{font-size:31px;min-width:85px}.progress-topics article{padding:15px;gap:13px}.progress-topics h2{font-size:16px}.glossary-search{gap:9px}.glossary-search input{font-size:14px}.glossary-search .button{font-size:12px;padding:8px 13px;min-height:35px}footer{margin:0 20px;font-size:9px;gap:12px}footer button{font-size:10px}dialog{padding:24px}.storage-panel{gap:18px}}
@media(max-width:380px){.topic-grid{grid-template-columns:1fr}.topic-card>p{min-height:0}.topic-meta{font-size:10px}.topic-card h3{font-size:21px}.home-heading h1{font-size:28px}.hero-copy h2{font-size:34px}.overview-strip>div{gap:6px}.overview-strip>div>span{font-size:8px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
.chapter-level{display:inline-block;font-size:9px;color:var(--green);letter-spacing:.8px;margin-bottom:8px;text-transform:uppercase}.level-studi-kasus{color:#a37c39}.chapter-group{margin-bottom:26px}.chapter-group-heading{display:flex;align-items:center;justify-content:space-between;margin:20px 0 12px}.chapter-group-heading h3{font-size:16px}.chapter-group-heading>span{font-size:11px;color:var(--muted)}.case-preview{margin:35px 0}.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}.case-grid article{padding:25px;border:1px solid var(--line);border-top:3px solid var(--green);border-radius:7px;background:var(--surface)}.case-grid h3{font-size:23px;line-height:1.2;margin:10px 0 12px}.case-grid article>p:not(.eyebrow){font-size:14px;line-height:1.7;color:var(--muted);margin-bottom:20px}.article-heading .eyebrow{line-height:2}.sidebar-subjects{margin-top:22px;padding-top:20px}.sidebar-bottom{padding-top:24px}@media(max-width:700px){.case-grid{grid-template-columns:1fr}.case-preview .section-heading{flex-wrap:wrap}.article-heading .eyebrow{font-size:8px;letter-spacing:1px}.article-heading .eyebrow span{margin:0 4px}}
:root{--bg:#f6f3ed;--surface:#fffcf7;--ink:#243843;--muted:#68747a;--line:#deded5;--soft:#eeeee5;--accent:#edbd88;--green:#37667a;--sidebar:235px}html[data-theme=dark]{--bg:#17222d;--surface:#1f2d38;--ink:#e6ece8;--muted:#afc0c5;--line:#3b4b56;--soft:#293b45;--green:#b9d7d1}.brand{font-size:26px;letter-spacing:-1px;gap:8px}.brand-orbit{font-family:Georgia,serif;font-size:41px;font-weight:400;line-height:1;color:var(--green)}.home-hero{background:#233846;border-color:#425662}.hero-copy h2{font-size:clamp(33px,3.1vw,47px)}.dark-tag{color:#d2e3df;border-color:#657a80}.hero-copy>p{color:#bfd0d1}.hero-copy>small{color:#b8c6c7}.lime-button{color:#243843}.physics-hero-art{display:flex;flex-direction:column;justify-content:center;border-left:1px solid #4b606b;padding:30px;background-color:#29424f;background-image:radial-gradient(#b8c9c51f .8px,transparent .8px);background-size:19px 19px}.physics-hero-art>.eyebrow{color:#bdcfd0;font-size:9px}.physics-hero-art>svg{width:100%;height:auto;max-height:290px;margin:20px 0}.physics-hero-art svg text{fill:#e2e9df;font:14px Barlow,Arial,sans-serif}.physics-hero-art svg .hero-svg-caption{font-size:10px;fill:#b3c7cb}.physics-hero-art>p:last-child{font-size:12px;color:#bed0d1;line-height:1.8}.formula-note{margin:32px 0;padding:19px 23px;border:1px solid var(--line);border-radius:6px;background:var(--surface)}.formula-note summary{font-size:14px;font-weight:600;cursor:pointer;color:var(--green)}.formula-note>div{padding-top:18px}.formula-expression{font:italic 27px/1.8 Georgia,serif;color:var(--ink);overflow-wrap:anywhere}.formula-note>div>p:not(.formula-expression){font-size:15px;line-height:1.8;margin-top:14px;color:var(--muted)}.formula-limits{padding-top:14px;border-top:1px solid var(--line)}.formula-limits b{color:var(--ink);font-weight:600}.experiment{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:25px;margin:30px 0}.experiment h3{font-size:24px;margin:9px 0 13px;line-height:1.25}.experiment-prompt{font-size:15px;line-height:1.7;color:var(--muted)}.experiment-controls{display:grid;gap:18px;grid-template-columns:1fr 1fr;padding-top:24px}.experiment-controls>label{display:grid;gap:12px;font-size:12px}.experiment-controls>label>span{display:flex;justify-content:space-between;gap:10px;align-items:center}.experiment-controls output{font-weight:600;color:var(--green);white-space:nowrap}.experiment-controls input[type=range]{width:100%;accent-color:var(--green);cursor:pointer}.experiment-controls .switch-control{display:flex;align-items:center;gap:9px;grid-column:1/-1}.switch-control input{accent-color:var(--green);width:18px;height:18px}.physics-scene{display:block;width:100%;height:auto;background:var(--soft);border:1px solid var(--line);border-radius:6px;margin:25px 0 18px;max-height:360px}.physics-scene text{font:14px Barlow,Arial,sans-serif;fill:var(--ink)}.physics-scene .scene-caption{font-size:11px;fill:var(--muted)}.scene-line{fill:none;stroke:var(--ink);stroke-width:2}.scene-dashed{fill:none;stroke:var(--muted);stroke-width:1;stroke-dasharray:4 5}.scene-body{fill:#d8e4df;stroke:#486775;stroke-width:2}.scene-orb{fill:#d99861;stroke:#8d593d;stroke-width:1}.force-left{stroke:#ab754c;stroke-width:3;fill:none}.force-right{stroke:#376d83;stroke-width:3;fill:none}.water-fill{fill:#8dbbce55}.energy-potential{fill:#6b91aa}.energy-kinetic{fill:#d8a16b}.wave-trace{stroke:var(--green);fill:none;stroke-width:2.5}.resistor{fill:none;stroke:#b7794f;stroke-width:3}.experiment-result{font-size:16px!important;font-weight:600;line-height:1.7;color:var(--green)}.experiment-why{font-size:14px!important;line-height:1.8;color:var(--muted);margin-top:9px}.model-limits{border-top:1px solid var(--line);margin-top:20px;padding-top:15px}.model-limits summary{font-size:12px;cursor:pointer;color:var(--muted)}.model-limits p{font-size:12px;line-height:1.8;margin-top:12px;color:var(--muted)}.scene-body+text{fill:#243843}.topic-symbol{color:#334d5b}@media(max-width:1200px){:root{--sidebar:210px}.brand{font-size:24px;gap:6px}.brand-orbit{font-size:34px}.physics-hero-art{padding:25px}.hero-copy h2{font-size:36px}}@media(max-width:1000px){.physics-hero-art{border-left:0;border-top:1px solid #4b606b}.physics-hero-art>svg{max-height:250px}.hero-copy h2{font-size:38px}}@media(max-width:700px){.experiment{padding:18px}.experiment h3{font-size:22px}.experiment-controls{grid-template-columns:1fr}.experiment-controls label{font-size:12px}.physics-hero-art{padding:25px}.physics-hero-art>svg{max-height:230px}.hero-copy h2{font-size:37px}.formula-note{padding:17px}.physics-scene{min-height:150px}}

/* Reading connections remain optional and preserve each learner's path. */
.chapter-prerequisites,.transfer-reflection{margin:26px 0;padding:23px;border:1px solid var(--line);border-radius:12px;background:var(--surface,#fff)}.chapter-prerequisites h2,.transfer-reflection h2{font-size:23px;line-height:1.35;margin:12px 0}.chapter-prerequisites p,.transfer-reflection p{font-size:15px;line-height:1.85}.prerequisite-links{display:flex;flex-direction:column;align-items:start;gap:13px;margin-top:18px}.prerequisite-links a{max-width:100%;white-space:normal;line-height:1.6}.transfer-reflection .small-note{font-size:13px;margin-top:14px}.prerequisite-links .icon{flex-shrink:0}
@media(max-width:600px){.chapter-prerequisites,.transfer-reflection{padding:19px}.chapter-prerequisites h2,.transfer-reflection h2{font-size:21px}}

/* Ruang Fisika: a warm science journal, with serif titles and a light experiment plate. */
:root{--bg:#f8f1e5;--surface:#fffcf5;--ink:#463a30;--muted:#7b6b5c;--line:#e3d6c4;--soft:#f0e5d3;--accent:#efb57e;--green:#a14b25}
html[data-theme=dark]{--bg:#25211e;--surface:#302922;--ink:#f4e8d7;--muted:#c6b39c;--line:#59493b;--soft:#3d3228;--accent:#efb57e;--green:#efad7b}
.brand-orbit{color:var(--green)}.sidebar{border-right-style:solid}.sidebar nav a{border-radius:14px}.sidebar .nav-label{letter-spacing:1.7px}.home-heading h1,.path-heading h1,.article-heading h1,.article-section h2{font-family:Georgia,'Times New Roman',serif;font-weight:400;letter-spacing:-.035em}.home-heading h1{line-height:1.17}.home-heading h1>span{color:var(--green)}.edition{border-left:2px solid var(--green);padding-left:14px;line-height:1.9}
.home-hero{background:var(--surface);border-color:var(--line);color:var(--ink);border-radius:20px;box-shadow:0 8px 25px #49351d05}.hero-copy h2{font-family:Georgia,'Times New Roman',serif;font-weight:400;letter-spacing:-1.2px;line-height:1.15;color:var(--ink)}.hero-copy h2>span{color:var(--green)}.hero-copy>p,.hero-copy>small{color:var(--muted)}.dark-tag{color:var(--green);border-color:var(--line);background:var(--soft)}.lime-button{background:var(--green);color:var(--surface)}
.physics-hero-art{background-color:var(--soft);background-image:linear-gradient(#a46a3411 1px,transparent 1px);background-size:100% 24px;border-left-color:var(--line)}.physics-hero-art>.eyebrow,.physics-hero-art>p:last-child{color:var(--muted)}.physics-hero-art svg text{fill:var(--ink)}.physics-hero-art svg .hero-svg-caption{fill:var(--muted)}.physics-hero-art svg path[stroke="#d8e6dd"]{stroke:var(--green)}.physics-hero-art svg path[stroke="#b9d5c5"]{stroke:var(--ink)}.physics-hero-art svg path[stroke="#577180"]{stroke:var(--muted)}.physics-hero-art svg circle:first-of-type{stroke:#bd7546;stroke-width:1.4}
.topic-card{border-radius:16px;border-color:var(--line);box-shadow:0 3px 0 #b88a5710}.topic-card h3{font-family:Georgia,'Times New Roman',serif;font-weight:400;font-size:24px;line-height:1.25}.topic-card .topic-symbol{color:var(--ink);border-radius:50%}.overview-strip{border-bottom-style:dashed}.overview-strip>div>b{font-family:Georgia,'Times New Roman',serif;font-weight:400}.concept-diagram:not(.hero-diagram){border-radius:14px}.diagram-node{border-radius:11px}.path-heading{border-bottom-style:solid}.chapter-row{border-bottom-style:dashed}.article-heading h1{font-size:clamp(33px,3.7vw,47px);line-height:1.17}.article-section h2{line-height:1.3}.formula-note{background:var(--soft);border-radius:0 12px 12px 0;border-left:4px solid var(--green)}.formula-expression{color:var(--ink)}.chapter-prerequisites,.transfer-reflection{border-radius:15px;background:var(--surface)}.chapter-prerequisites h2,.transfer-reflection h2{font-family:Georgia,'Times New Roman',serif;font-weight:400}.experiment{border-radius:16px}.experiment-result{color:var(--green)}
@media(max-width:1000px){.physics-hero-art{border-top-color:var(--line)}}
@media(max-width:700px){.home-hero{border-radius:16px}.home-heading h1{font-size:33px}.hero-copy h2{font-size:34px}.edition{border-left:0;padding-left:0}.article-heading h1{font-size:34px}}
