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40px;padding:24px 0 32px;border-top:1px solid var(--border);font-size:10px;color:var(--muted);display:flex;justify-content:space-between;gap:20px;font-family:ui-monospace,monospace}footer span{font-family:inherit}footer a{text-decoration:underline}.empty-state{padding:64px 24px;text-align:center}.empty-state p{margin:16px 0 24px;color:var(--muted)}@keyframes appear{from{opacity:.3;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@media(min-width:1500px){main{padding:48px 56px}.map-row{grid-template-columns:32px 110px minmax(0,1fr)}.station{font-size:13px;padding:8px 12px}.map-row{padding:24px 0}.map-heading{padding:24px 32px}.map-body{padding:12px 32px 24px}}
@media(max-width:1250px){.atlas-grid{grid-template-columns:minmax(0,1fr)}.rail{grid-template-columns:1fr 1fr;align-items:start}.start-card{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:24px}.start-card .eyebrow{grid-column:1/-1;margin-bottom:0}.start-number{display:none}.start-card h2{font-size:20px;margin:0}.start-card p{grid-column:1/-1}.start-card .button{grid-column:1/-1;margin-top:8px}.learning-key{padding:20px}.learning-key h3{margin-bottom:12px}.key-step{padding:8px 0}.l2-note{grid-column:1/-1}.under-map{gap:16px}.quick-topic{padding:20px;gap:12px}.lesson-layout{grid-template-columns:minmax(0,1fr) 170px;gap:24px}.lesson-position{padding-left:16px}}
@media(max-width:1100px){.sidebar{width:208px;padding:28px 16px}.page-shell{margin-left:208px}main{padding:32px}.topbar{padding:0 32px}.brand{gap:8px}.brand strong{font-size:13px}.brand{font-size:9px}.course-nav-label{font-size:8px}.lesson-layout{display:block}.lesson-position{display:none}.under-map{grid-template-columns:1fr}.quick-topic{padding:20px;align-items:center}.quick-topic p{font-size:13px}.quick-topic h3{margin-bottom:4px}.illustration-block{gap:24px;padding:24px}.illustration-block h2{font-size:20px}.case-grid{grid-template-columns:1fr}}
@media(max-width:767px){.sidebar{width:272px;transform:translateX(-100%);transition:transform var(--motion) var(--ease);box-shadow:12px 0 48px #0c142222}.sidebar.open{transform:translateX(0)}.page-shell{margin-left:0}.topbar{height:60px;padding:0 20px;justify-content:flex-start}.menu-button{display:block;background:transparent;border:1px solid var(--border);border-radius:4px;min-width:36px;min-height:36px;color:var(--text);font-size:17px}.topbar>span{font-size:9px;letter-spacing:1px}.topbar-right{margin-left:auto}.edition{display:none}.free-tag{font-size:11px}main{padding:28px 20px}.page-title{display:block;margin-bottom:24px}h1{font-size:30px;letter-spacing:-1px}.page-title p{font-size:14px}.title-aside{margin-top:20px;font-size:11px}.title-aside strong{font-size:18px}.map-heading{padding:20px;display:block}.map-heading h2{font-size:13px}.map-heading span{display:block;margin-top:6px;font-size:10px}.map-body{padding:8px 16px 16px}.map-row{grid-template-columns:28px minmax(0,1fr);column-gap:12px;row-gap:12px;padding:20px 0}.station-index{width:28px;height:28px}.map-row-label{display:flex;gap:8px;align-items:center;min-height:28px;padding-top:0}.map-row-label small{margin-top:0;font-size:9px}.station-links{grid-column:2;gap:8px}.station{font-size:12px;min-height:40px;padding:8px}.map-row:not(:last-child):before{left:13px;top:48px;height:calc(100% - 24px)}.map-note{padding:16px;font-size:11px}.rail{grid-template-columns:1fr}.learning-key{display:none}.l2-note{grid-column:auto}.under-map{margin-top:20px}.eyebrow{font-size:10px}.course-line{padding:16px;gap:10px;grid-template-columns:28px minmax(0,1fr) 52px 14px}.course-line h3{font-size:14px}.course-line p{font-size:12px}.course-line .meta{font-size:10px}.course-group-title{padding:16px;font-size:12px}.lesson-head h1{font-size:30px}.lesson-head .intro{font-size:16px}.lesson-section{padding:28px 0}.core-box{font-size:17px;padding:20px}.section-title h2{font-size:18px}.section-title{gap:10px}.lesson-section>p{font-size:15px}.supply-grid{grid-template-columns:1fr}.supply-cell{border-right:0;border-bottom:1px solid var(--border);padding:16px 20px}.company-row{gap:16px}.company-row a{min-width:94px;font-size:12px}.company-row span{font-size:11px}.investor-box{padding:24px}.investor-box p{font-size:15px}.quiz-box{padding:20px 16px}.quiz-box legend{font-size:15px}.quiz-option{font-size:13px;padding:12px}.motion-stage{padding:12px 12px 0;aspect-ratio:1.65}.motion-caption{padding:12px 20px 20px;min-height:160px}.motion-caption h3{font-size:16px}.motion-caption p{font-size:12px}.motion-controls{padding:12px;gap:8px;flex-wrap:wrap}.motion-controls .button{font-size:11px;padding:6px 8px}.step-dots{gap:4px}.step-dots button{width:28px;min-height:36px;font-size:11px}.motion-top{padding:12px 16px}.motion-top span{font-size:9px}.photo-pair{grid-template-columns:1fr}.photo-pair img,.schematic-thumb{height:220px}.photo-pair figcaption{font-size:12px}.next-lesson{padding:24px;flex-direction:column;align-items:flex-start}.next-lesson .button{width:100%}.illustration-block{grid-template-columns:1fr;gap:20px;padding:20px}.module-grid{grid-template-columns:1fr}.advanced-intro p{font-size:15px}.module-card{padding:24px}.simulator{padding:24px 20px}.sim-grid{grid-template-columns:1fr;gap:24px}.sim-result{border-left:0;border-top:1px solid var(--dark-line);padding:24px 0 0}.sim-number{font-size:40px}.range-row label{font-size:12px}.case-card{padding:20px}footer{margin:0 20px;display:flex;flex-wrap:wrap;font-size:9px;gap:12px}footer span{display:none}.breadcrumbs{font-size:11px}.section-head{margin-top:32px;align-items:flex-start;flex-direction:column}.section-head h2{font-size:22px}.review-edition{font-size:12px}.brand{font-size:10px}.brand strong{font-size:15px}.course-nav-label{font-size:9px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
.core-box{word-break:keep-all;overflow-wrap:break-word}
.page-title>.button{flex-shrink:0;white-space:nowrap}
.deep-placeholder{margin:32px 0;padding:20px 24px;border:1px dashed var(--border);border-radius:var(--r2);background:var(--white);color:var(--muted);font-size:14px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer-links{display:flex;gap:16px;flex-wrap:wrap}
.section-more{margin-top:16px}
.glossary-filter{display:grid;gap:12px;margin-bottom:16px}
.glossary-search input{width:100%;min-height:48px;border:1px solid var(--border);border-radius:var(--r1);padding:12px 16px;font:inherit;font-size:15px;background:var(--white);color:var(--text)}
.glossary-search input:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.glossary-chips{display:flex;flex-wrap:wrap;gap:8px}
.glossary-chip{border:1px solid var(--border);background:var(--white);color:var(--text);font:inherit;font-size:13px;padding:6px 12px;min-height:36px;border-radius:999px;cursor:pointer;transition:background var(--fast)}
.glossary-chip:hover{background:var(--paper)}
.glossary-chip[aria-pressed="true"]{background:var(--ink);color:var(--light);border-color:var(--ink)}
.glossary-jump{display:flex;flex-wrap:wrap;gap:4px;padding:12px 0;margin-bottom:8px;border-block:1px solid var(--border)}
.glossary-jump button{min-width:32px;min-height:32px;border:0;border-radius:var(--r1);background:transparent;color:var(--text);font:13px ui-monospace,monospace;cursor:pointer}
.glossary-jump button:hover:not(:disabled){background:var(--white)}
.glossary-jump button:disabled{color:var(--border);cursor:default}
.glossary-count{font-size:12px;color:var(--muted);margin:8px 0 24px}
.glossary-letter{margin-bottom:32px;scroll-margin-top:24px}
.glossary-letter h2{font:600 14px ui-monospace,monospace;color:var(--amber-dark);margin-bottom:12px}
.glossary-entry summary{display:flex;justify-content:space-between;align-items:center;gap:16px;cursor:pointer}
.glossary-term{font-weight:600}
.glossary-group{font-size:11px;color:var(--subtle);white-space:nowrap}
.glossary-multi{font-size:12px;color:var(--muted);margin-top:12px}
.glossary-def{margin-top:12px;padding-top:12px;border-top:1px dashed var(--border)}
.glossary-def:first-of-type{border-top:0;padding-top:0}
.glossary-def p{font-size:14px;line-height:1.8}
.glossary-source{display:inline-block;margin-top:6px;font-size:12px;color:var(--muted);text-decoration:underline;text-underline-offset:3px}
.glossary-source:hover{color:var(--text)}
.glossary-entry[open]{scroll-margin-top:24px}
.glossary-empty{padding:48px 24px;text-align:center;background:var(--white);border:1px solid var(--border);border-radius:var(--r2)}
.glossary-empty p{color:var(--muted);margin-top:12px;font-size:14px}
@media(max-width:767px){.glossary-jump{flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch}.glossary-jump button{flex:0 0 auto}.glossary-group{display:none}}
.bridge-cards{display:grid;gap:12px;margin-bottom:16px}
.bridge-card{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px;align-items:center;padding:20px 24px;border-left:2px solid var(--amber);background:#efb76c12;border-radius:0 var(--r2) var(--r2) 0}
.bridge-card .eyebrow{color:var(--amber-dark);margin-bottom:8px}
.bridge-card h3{font-size:17px;margin-bottom:6px}
.bridge-card p{font-size:13px;color:var(--muted);line-height:1.7}
.bridge-action{display:grid;justify-items:end;gap:6px}
.bridge-action small{font-size:11px;color:var(--muted)}
.bridge-prereq{margin-top:16px;padding-top:12px;border-top:1px dashed var(--border)}
.bridge-prereq>span{display:block;font-size:12px;color:var(--muted);margin-bottom:8px}
.bridge-prereq>div{display:flex;flex-wrap:wrap;gap:6px}
.bridge-pill{display:inline-flex;align-items:center;gap:4px;min-height:32px;padding:4px 10px;border:1px solid var(--border);border-radius:4px;font-size:12px;background:var(--white);color:var(--text)}
.bridge-pill:hover{border-color:var(--subtle)}
.bridge-pill.done{border-color:#23695744;color:var(--success);background:#2369570a}
.course-l2{margin-left:8px;vertical-align:2px;font-weight:400;display:inline-block}
@media(max-width:767px){.bridge-card{grid-template-columns:1fr;padding:18px}.bridge-action{justify-items:start}}
.brand{margin-bottom:24px}
.sidebar-search{position:relative;margin:0 0 28px}
.sidebar-search input{width:100%;min-height:40px;border:1px solid var(--dark-line);border-radius:var(--r1);background:var(--panel);color:var(--light);font:inherit;font-size:13px;padding:8px 36px 8px 12px}
.sidebar-search input::placeholder{color:var(--subtle)}
.sidebar-search input:focus-visible{outline:2px solid var(--amber);outline-offset:1px}
.sidebar-search kbd{position:absolute;right:8px;top:50%;transform:translateY(-50%);font:11px ui-monospace,monospace;color:var(--subtle);border:1px solid var(--dark-line);border-radius:4px;padding:0 6px;pointer-events:none}
.search-page-form{display:flex;gap:8px;margin-bottom:20px}
.search-page-form input{flex:1;min-height:48px;border:1px solid var(--border);border-radius:var(--r1);padding:12px 16px;font:inherit;font-size:15px;background:var(--white);color:var(--text)}
.search-kinds{margin-bottom:4px}
.search-kinds .glossary-chip span{font:11px ui-monospace,monospace;opacity:.7;margin-left:2px}
.search-kinds .glossary-chip:disabled{opacity:.4;cursor:default}
.search-results{list-style:none;padding:0;margin:0;background:var(--white);border:1px solid var(--border);border-radius:var(--r2);overflow:hidden}
.search-results li+li{border-top:1px solid var(--border)}
.search-result{display:grid;grid-template-columns:120px minmax(0,1fr) 20px;gap:16px;align-items:start;padding:20px 24px;color:var(--text)}
.search-result:hover{background:var(--paper)}
.search-result h3{font-size:16px;margin-bottom:6px}
.search-result p{font-size:13px;line-height:1.75;color:var(--muted)}
.search-result small{display:block;margin-top:6px;font-size:11px;color:var(--subtle)}
.search-result mark{background:#efb76c59;color:inherit;border-radius:2px;padding:0 1px}
.search-kind{font:11px ui-monospace,monospace;color:var(--muted);padding-top:4px}
.search-kind--term{color:var(--amber-dark)}
.search-kind--advanced{color:#5b4a8a}
.search-kind--company{color:var(--success)}
.search-empty p{color:var(--muted);font-size:14px}
.search-examples{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
@media(max-width:767px){.search-result{grid-template-columns:1fr;gap:6px;padding:16px}.search-result>span:last-child{display:none}.search-page-form .button{padding:10px 14px}}