/* HyperBoosters editorial system. Canonical fonts are referenced, not distributed. */
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.catalog{display:grid;grid-template-columns:repeat(2,1fr);gap:17px}.resource-card{border:1px solid var(--line);border-radius:20px;padding:22px;background:var(--surface);display:flex;flex-direction:column;align-items:flex-start}.resource-card h3{font-size:1.05rem;margin:12px 0}.resource-card p{font-size:.81rem;color:var(--muted)}.resource-card small{font-size:.67rem;overflow-wrap:anywhere}.resource-card .btn{margin-top:auto}.resource-card .kind{font-size:.65rem;letter-spacing:.08em;text-transform:uppercase;color:var(--primary-soft)}.video-poster{width:100%;height:145px;border-radius:14px;background:var(--callout);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--primary-soft);position:relative;margin:12px 0}.video-poster .icon{width:45px;height:45px}.video-poster span{position:absolute;bottom:12px;font-size:.6rem;letter-spacing:.1em}.glossary-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}.glossary-button{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:19px;color:var(--text);text-align:left;min-height:115px}.glossary-button b{display:block;font-size:1rem;margin-bottom:7px}.glossary-button span{color:var(--muted);font-size:.82rem;line-height:1.55;display:block}.glossary-button:hover{border-color:var(--primary)}.search-line{position:relative;margin:25px 0}.search-line input{padding-left:43px}.search-line .icon{position:absolute;left:14px;top:15px;color:var(--muted)}.lab-panel{padding:28px;border:1px solid var(--line);border-radius:24px;background:var(--surface);margin:25px 0}.lab-top{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:22px}.lab-top h2{margin:0;font-size:1.4rem}.matching-row{display:grid;grid-template-columns:1fr 1fr;gap:15px;align-items:center;padding:13px 0;border-bottom:1px solid var(--line-soft)}.matching-row label{font-size:.9rem}.matching-row select{font-size:.82rem}.order-row{display:flex;align-items:center;gap:13px;background:var(--raised);border:1px solid var(--line);border-radius:12px;padding:11px;margin:8px 0;font-size:.89rem}.order-row strong{color:var(--primary-soft);font-family:var(--mono);font-size:.77rem}.order-row .grow{flex:1}.order-row button{height:34px;min-width:34px}.chat-log{display:grid;gap:14px;margin:20px 0}.bubble{padding:16px 20px;border:1px solid var(--line);border-radius:18px;max-width:90%;font-size:.88rem;background:var(--raised);line-height:1.6}.bubble.user{margin-left:auto;background:var(--callout);border-color:var(--primary)}.bubble small{display:block;color:var(--faint);font-size:.67rem;margin-bottom:5px;text-transform:uppercase;letter-spacing:.07em}.chat-choices{display:grid;gap:10px}.chat-choices button{text-align:left;justify-content:flex-start}.terminal{background:#07070c;border:1px solid #333340;border-radius:18px;overflow:hidden;color:#dedeea}.terminal-head{background:#16161f;color:#b1b1bf;padding:12px 18px;font-size:.7rem;border-bottom:1px solid #333340;display:flex;justify-content:space-between}.terminal-output{white-space:pre-wrap;padding:21px;margin:0;font-size:.79rem;line-height:1.75;min-height:180px;max-height:360px;overflow:auto;overflow-wrap:anywhere}.terminal-form{display:flex;align-items:center;padding:0 18px 18px;gap:12px}.terminal-form label{font-family:var(--mono);font-size:.8rem;color:#a5b4fc}.terminal-form input{background:#111119;color:#f4f4f5;border-color:#414155;font: .8rem var(--mono);min-width:0}.terminal-form button{flex:none}.flashcard{min-height:230px;border:1px solid var(--line);border-radius:24px;padding:35px;display:flex;flex-direction:column;justify-content:center;text-align:center;background:var(--surface)}.flashcard h2{margin:12px 0;font-size:1.8rem}.flashcard p{margin:12px auto;max-width:45ch}.flash-controls{display:flex;justify-content:center;gap:12px;margin:18px 0;flex-wrap:wrap}.review-row{display:flex;justify-content:space-between;gap:16px;align-items:center;border:1px solid var(--line);border-radius:15px;background:var(--surface);padding:16px 20px;margin:10px 0}.review-row p{margin:0;font-size:.86rem}.review-row small{display:block;font-size:.73rem}
#dialog{padding:0;max-width:650px;width:calc(100% - 32px);border:1px solid var(--line);border-radius:26px;background:var(--surface);color:var(--text);max-height:85vh;overflow:auto;box-shadow:0 20px 100px #0008}#dialog::backdrop{background:#05050cc9}.dialog-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;padding:27px 28px 10px}.dialog-head h2{font-size:1.8rem;margin:5px 0}.dialog-body{padding:12px 28px 28px}.dialog-body p{font-size:.95rem}.dialog-body h3{font-size:.85rem;margin-top:22px;color:var(--primary-soft)}.dialog-body .search-result{display:block;padding:14px 0;border-bottom:1px solid var(--line);text-decoration:none;color:var(--text)}.search-result small{display:block}.dialog-body .term-example{padding:16px;border:1px solid var(--line);border-radius:13px;background:var(--raised);font-size:.88rem}#toast{position:fixed;bottom:25px;left:50%;transform:translate(-50%,25px);background:var(--text);color:var(--base);padding:13px 20px;border-radius:13px;z-index:200;opacity:0;pointer-events:none;font-size:.87rem;max-width:90vw;box-shadow:0 6px 28px #0005;transition:.2s}#toast.show{opacity:1;transform:translate(-50%,0)}.storage-warning{position:sticky;top:0;padding:12px 24px;background:#553a08;color:#fff4c2;z-index:150;text-align:center;font-size:.83rem}.noscript{position:relative;z-index:100;padding:40px;background:var(--surface)}.empty{padding:30px;border:1px dashed var(--line);border-radius:18px;color:var(--muted)}.tab-panel[hidden],[hidden]{display:none!important}
@media(min-width:1600px){#main{padding-top:58px}.hero{gap:60px}}
@media(max-width:1200px){#sidebar{width:238px}.app-body{margin-left:238px}#main{padding:32px 28px 60px}.site-footer{margin:0 28px;flex-wrap:wrap}.hero{gap:24px}.hero-art{padding:18px}.hero h1{font-size:3.4rem}.metric-grid{grid-template-columns:1fr 1fr}.grid3{grid-template-columns:1fr 1fr}}
@media(max-width:960px){#sidebar{transform:translateX(-100%);transition:transform .2s;width:280px}body.menu-open #sidebar{transform:translateX(0)}.app-body{margin-left:0}.menu-button{display:inline-flex}#veil{position:fixed;inset:0;background:#000a;z-index:55}.hero h1{font-size:clamp(2.7rem,5.7vw,4rem)}#topbar{padding:12px 24px}.crumbs{font-size:.7rem}.hero{padding-top:20px}}
@media(max-width:640px){body{font-size:calc(16px * var(--scale))}#main{padding:26px 18px 50px}#topbar{min-height:66px;padding:10px 15px;gap:9px}.top-actions{gap:5px}.top-actions .xp{display:none}.top-actions .scale-label{display:none}.icon-btn{width:40px;height:40px;min-width:40px;padding:0}.crumbs{display:none}.hero{display:block;padding-top:15px}.hero h1{font-size:2.85rem}.hero p{font-size:1rem}.hero-art{margin-top:28px;padding:20px}.hero-art .node{padding:11px 16px}.hero-art .node:nth-child(3){margin-left:15px}.hero-art .node:nth-child(5){margin-left:30px}.continue{display:block}.continue .btn{margin-top:12px}.card{padding:22px}.grid2,.grid3,.catalog,.glossary-grid{grid-template-columns:1fr}.path-card{grid-template-columns:40px 1fr;padding:18px;gap:14px}.path-num{width:38px;height:38px;border-radius:12px}.path-meta{grid-column:2;text-align:left;display:flex;gap:12px;white-space:normal}.path-card h3{font-size:1rem}.section-head{display:block}.section-head small{display:block;margin-top:12px}.flow{flex-direction:column;gap:6px}.flow-node{display:flex;flex-direction:row;justify-content:flex-start;align-items:center;padding:12px;gap:16px;min-height:48px}.flow-arrow{justify-content:center;transform:rotate(90deg);height:13px}.visual{padding:19px 17px}.visual figcaption{font-size:.64rem}.comparison{font-size:.74rem}.comparison td,.comparison th{padding:11px 8px}.comparison td:first-child{width:28%}.timeline{grid-template-columns:1fr 1fr;gap:20px}.schematic-body{grid-template-columns:105px 1fr}.schematic-side{padding:12px 9px}.schematic-main{padding:15px 10px}.lesson-header h1{font-size:2.22rem;max-width:none}.lesson-header .lead{font-size:1rem}.reading p{font-size:1rem;line-height:1.65}.prompt pre{padding:17px;font-size:.8rem}.block-label{padding:11px 15px}.callout{padding:18px}.recap{grid-template-columns:1fr}.lesson-next{align-items:stretch;flex-direction:column}.lesson-next .btn{justify-content:space-between}.lesson-next small{display:block}.quiz-question{font-size:1.35rem}.option{padding:15px;gap:10px;font-size:.9rem}.quiz-controls .btn{flex:1}.metric-grid{gap:12px}.metric{padding:19px 15px}.metric b{font-size:1.75rem}.metric span{font-size:.7rem}.lab-panel{padding:20px 17px}.matching-row{grid-template-columns:1fr;gap:6px}.terminal-form{flex-wrap:wrap;gap:8px}.terminal-form input{width:calc(100% - 65px);flex:1}.terminal-form .btn{margin-left:auto}.skill-row{gap:12px}.skill-row .pill{font-size:.64rem}.review-row{flex-direction:column;align-items:flex-start}.site-footer{margin:0 18px;display:block;font-size:.68rem}.site-footer span,.site-footer a{display:block;margin-top:8px}.flashcard{padding:24px;min-height:230px}.glossary-button{min-height:100px}.tabs .tab{padding:13px 16px}.dialog-head{padding:23px 22px 8px}.dialog-body{padding:10px 22px 23px}.dialog-head h2{font-size:1.5rem}.pills{gap:6px}.pill{font-size:.66rem}.resource-card{padding:20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}
@media print{#sidebar,#topbar,.site-footer,.actions,.quiz-controls,.skip,#toast,.tabs{display:none!important}.app-body{margin:0}body{background:#fff;color:#171724;font-size:11pt}#main{padding:0;max-width:none}.card,.visual,.lab-panel{break-inside:avoid;border-color:#ddd;background:#fff}h1,h2,h3,h4,p,span{color:#171724}.term{color:#4338ca}a{color:#4338ca}.prompt{background:#f5f5f8}.prompt pre{color:#171724}.callout{background:#f3f1ff}}

/* Interactive diagrams preserve native keyboard controls. */
button.spot{display:block;width:100%;text-align:left;color:var(--text);font:inherit;cursor:pointer}button.spot:hover{border-color:var(--primary)}
@media(max-width:640px){.crumbs{display:flex!important;flex-wrap:wrap;font-size:10px;gap:4px;line-height:1.2}.crumbs>a:first-child{display:none}#topbar{gap:8px}.top-actions{gap:4px}.top-actions .icon-btn{width:38px;height:42px}.xp{font-size:11px}}

/* Contrast is checked at the actual text background, not across an average gradient. */
.btn.primary{background:#4f46e5;border-color:#4f46e5;color:#fff}
@media(max-width:640px){.icon-btn,.top-actions .icon-btn{width:44px;height:44px;min-width:44px}.order-row button{height:44px;min-width:44px}.top-actions{gap:2px}#topbar{padding-left:12px;padding-right:12px}.crumbs{min-width:0;overflow-wrap:anywhere}.term{min-height:28px}}
/* rem-based lesson text grows with the learner's text-size control. */
html{font-size:calc(16px * var(--scale))}
.step-dot.active{background:#4f46e5;color:#fff;border-color:#4f46e5}
[data-theme=light] input,[data-theme=light] textarea,[data-theme=light] select{border-color:#868699}

.setup-resources{margin:22px 0}.setup-resources .actions{margin-top:12px}.setup-resources p{margin-top:14px}
/* Hosted course utilities: links stay visible without covering learner actions. */
.academy-host-links{display:flex;flex-wrap:wrap;gap:.8rem;padding:.55rem 1rem;background:#172438;color:#fff;font-size:.85rem}
.academy-host-links a{color:#e5efff;text-decoration:underline;text-underline-offset:2px}
.academy-host-links a:focus-visible{outline:2px solid #fff;outline-offset:3px}