:root{--ink:#102334;--ink-deep:#071724;--ink-soft:#51636e;--paper:#f5f1e9;--paper-deep:#e8e2d7;--paper-light:#fbf9f4;--navy:#071724;--navy-soft:#0c2434;--sky:#9dc6d4;--orange:#ee7b3a;--orange-soft:#f6c4a6;--green:#2e7964;--line:#10233429;--line-dark:#ffffff29;--focus:#ff9a57;--serif:Georgia, "Times New Roman", serif;--sans:Arial, Helvetica, sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);min-height:100vh;color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;flex-direction:column;margin:0;display:flex}main{flex:1}a{color:inherit}button,input,select,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}::selection{background:var(--orange-soft);color:var(--ink-deep)}:focus-visible{outline:3px solid var(--focus);outline-offset:4px}.skip-link{z-index:100;color:var(--ink-deep);background:#fff;padding:.75rem 1rem;font-weight:700;position:fixed;top:1rem;left:1rem;transform:translateY(-220%)}.skip-link:focus{transform:translateY(0)}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.shell{width:min(1180px,100% - 3rem);margin-inline:auto}.site-header{z-index:20;border-bottom:1px solid var(--line-dark);background:var(--navy);color:#fff;position:relative}.nav-shell{justify-content:space-between;align-items:center;min-height:78px;display:flex}.brand{letter-spacing:.16em;align-items:baseline;gap:.18rem;font-size:1.46rem;font-weight:800;text-decoration:none;display:inline-flex}.brand-dot{background:var(--orange);border-radius:50%;width:.31rem;height:.31rem}nav{align-items:center;gap:2rem;display:flex}nav a{color:#d6e1e5;font-size:.92rem;text-decoration:none}nav a:hover,.lesson-breadcrumb a:hover,.text-link:hover{color:var(--orange)}.progress-pill{color:#b8cbd2;white-space:nowrap;border:1px solid #fff3;border-radius:999px;align-items:center;gap:.52rem;padding:.52rem .78rem;font-size:.75rem;display:inline-flex}.progress-pip{background:var(--orange);border-radius:50%;width:.42rem;height:.42rem}.section-kicker,.eyebrow,.instrument-overline,.card-category,.lesson-number,.access-label,.step-index{text-transform:uppercase;letter-spacing:.16em;margin:0;font-size:.69rem;font-weight:800}.section-kicker,.eyebrow{color:#60727b}.primary-button,.secondary-button{border:1px solid var(--ink);cursor:pointer;border-radius:1px;justify-content:space-between;align-items:center;gap:2rem;min-height:52px;padding:.8rem 1.15rem .8rem 1.35rem;font-size:.9rem;font-weight:700;text-decoration:none;display:inline-flex}.primary-button{background:var(--ink);color:#fff}.primary-button span{color:var(--orange);font-size:1.25rem}.primary-button.light{background:var(--paper-light);color:var(--ink-deep);border-color:var(--paper-light)}.secondary-button{color:var(--ink);background:0 0}.secondary-button.on-dark{color:#fff;border-color:#fff6}.primary-button:hover{background:#19354a}.primary-button.light:hover{background:#fff}.secondary-button:hover{background:#1023340f}.secondary-button.on-dark:hover{background:#ffffff14}.home-hero{background:var(--paper);overflow:hidden}.hero-inner{min-height:calc(100vh - 78px);padding-block:clamp(4.8rem,10vh,8rem) 0}.home-hero h1{max-width:910px;font-family:var(--serif);letter-spacing:-.058em;margin:1rem 0 1.55rem;font-size:clamp(4rem,9vw,7.8rem);font-weight:400;line-height:.93}.home-hero h1 em{color:var(--orange);font-weight:400}.hero-copy{max-width:620px;color:var(--ink-soft);margin:0;font-size:clamp(1.08rem,2vw,1.32rem);line-height:1.58}.hero-actions{color:#687880;align-items:center;gap:1.4rem;margin-top:2.25rem;font-size:.82rem;display:flex}.hero-instrument{background:var(--navy);color:#fff;grid-template-columns:.72fr 1.28fr;min-height:310px;margin-top:clamp(4.2rem,10vh,7rem);display:grid;position:relative;overflow:hidden}.hero-instrument:before{content:"";background-image:linear-gradient(#9dc6d409 1px,#0000 1px),linear-gradient(90deg,#9dc6d409 1px,#0000 1px);background-size:32px 32px;position:absolute;inset:0}.instrument-copy{z-index:1;border-right:1px solid var(--line-dark);padding:clamp(2rem,4.8vw,3.8rem);position:relative}.instrument-overline{color:var(--sky)}.instrument-copy strong{color:var(--paper-light);font-family:var(--serif);letter-spacing:-.04em;margin-top:1.25rem;font-size:clamp(2.9rem,6vw,5.5rem);font-weight:400;line-height:.95;display:block}.instrument-copy p{color:#aec5ce;margin:1rem 0 0}.instrument-diagram{background:linear-gradient(#123246 0 58%,#0b1d27 58%);min-height:310px;position:relative}.instrument-diagram:after{content:"";border-top:1px solid #ffffff40;position:absolute;inset:58% 0 auto}.instrument-target,.instrument-actual{transform-origin:0;width:120%;position:absolute;left:-8%}.instrument-target{border-top:2px dashed #9dc6d4ad;top:62%;transform:rotate(-11deg)}.instrument-actual{border-top:3px solid var(--orange);top:33%;transform:rotate(-5deg)}.instrument-aircraft{width:66px;height:28px;position:absolute;top:25%;left:38%}.instrument-aircraft i,.instrument-aircraft b{background:#fff;display:block;position:absolute}.instrument-aircraft i{height:2px;top:13px;left:0;right:0}.instrument-aircraft b{width:3px;height:25px;top:2px;left:31px}.instrument-fix,.instrument-distance{color:#d2e7ec;letter-spacing:.12em;font-size:.65rem;font-weight:800;line-height:1.45;position:absolute}.instrument-fix{border-left:1px solid #9dc6d4a6;padding-left:.8rem;bottom:18%;right:9%}.instrument-distance{color:var(--orange-soft);bottom:8%;left:42%}.method-section,.access-section{padding-block:clamp(6rem,11vw,10rem)}.section-heading-row{grid-template-columns:1.2fr .8fr;align-items:end;gap:clamp(3rem,9vw,8rem);margin-bottom:4rem;display:grid}.section-heading-row.compact{grid-template-columns:1fr auto;align-items:center;gap:2rem;margin-bottom:2.4rem}.section-heading-row h2,.access-section h2,.final-cta h2{max-width:750px;font-family:var(--serif);letter-spacing:-.04em;margin:.75rem 0 0;font-size:clamp(2.65rem,5vw,4.7rem);font-weight:400;line-height:1.02}.section-heading-row>p{max-width:460px;color:var(--ink-soft);margin:0;line-height:1.65}.method-grid{border-top:1px solid var(--line);border-bottom:1px solid var(--line);grid-template-columns:repeat(3,1fr);display:grid}.method-grid article{min-height:260px;padding:2rem 2rem 2rem 0}.method-grid article+article{border-left:1px solid var(--line);padding-left:2rem}.method-grid span{color:var(--orange);letter-spacing:.16em;font-size:.72rem;font-weight:800}.method-grid h3{font-family:var(--serif);margin:3.5rem 0 .8rem;font-size:2rem;font-weight:400}.method-grid p{max-width:300px;color:var(--ink-soft);margin:0;line-height:1.62}.featured-section{background:var(--paper-deep);padding-block:clamp(5.5rem,10vw,9rem)}.text-link{gap:1.5rem;font-size:.83rem;font-weight:700;text-decoration:none;display:inline-flex}.text-link span{color:var(--orange)}.lesson-grid{grid-template-columns:repeat(3,1fr);gap:1rem;display:grid}.lesson-card{border-top:3px solid var(--ink);background:var(--paper-light);flex-direction:column;min-width:0;min-height:455px;padding:1.5rem;transition:transform .18s,box-shadow .18s;display:flex}.lesson-card.is-complete{border-top-color:var(--green)}.lesson-card:hover{transform:translateY(-3px);box-shadow:0 18px 44px #07172414}.lesson-card-topline,.lesson-card-meta,.card-link{justify-content:space-between;align-items:center;gap:1rem;display:flex}.lesson-number{color:var(--orange)}.access-label{border:1px solid var(--line);color:#536873;border-radius:999px;padding:.42rem .62rem;font-size:.59rem}.lesson-card-copy{margin-top:4.2rem}.card-category{color:#657781}.lesson-card h2{font-family:var(--serif);letter-spacing:-.035em;margin:.75rem 0 .45rem;font-size:clamp(2rem,3vw,2.7rem);font-weight:400;line-height:1}.lesson-card h2 a{text-decoration:none}.lesson-card h2 a:after{content:"";position:absolute;inset:0}.lesson-card{position:relative}.lesson-card h2 a:focus-visible:after{outline:3px solid var(--focus);outline-offset:4px}.lesson-card h2 a:focus-visible{outline:none}.lesson-card-copy>p:last-child{color:var(--ink-soft);margin:0;line-height:1.5}.lesson-card-meta{border-top:1px solid var(--line);color:#657781;flex-wrap:wrap;margin-top:auto;padding-block:1.5rem;font-size:.69rem}.card-progress.complete{color:var(--green);font-weight:700}.card-link{z-index:1;border-top:1px solid var(--line);padding-top:1.15rem;font-size:.79rem;font-weight:700;text-decoration:none;position:relative}.card-link span{color:var(--orange);font-size:1.15rem}.access-section{grid-template-columns:1.2fr .8fr;align-items:center;gap:clamp(3rem,10vw,8rem);display:grid}.access-main>p:last-child{max-width:610px;color:var(--ink-soft);font-size:1.1rem;line-height:1.7}.access-note{border-left:3px solid var(--orange);padding:1.2rem 0 1.2rem 2rem}.access-note>span{color:#657781;text-transform:uppercase;letter-spacing:.14em;font-size:.64rem;font-weight:800}.access-note h3{font-family:var(--serif);margin:.8rem 0;font-size:2rem;font-weight:400}.access-note p{color:var(--ink-soft);margin:0;line-height:1.65}.final-cta{background:var(--navy);color:#fff}.final-cta-inner{padding-block:clamp(5rem,10vw,8rem)}.final-cta .section-kicker{color:var(--sky)}.final-cta h2{max-width:800px;margin-bottom:2.5rem}.library-page{padding-bottom:clamp(6rem,10vw,10rem)}.library-hero{padding-block:clamp(4.5rem,9vw,8rem) clamp(4rem,7vw,6rem)}.library-hero h1,.lesson-header h1,.not-found-page h1{max-width:900px;font-family:var(--serif);letter-spacing:-.052em;margin:.85rem 0 1.35rem;font-size:clamp(3.35rem,7vw,6rem);font-weight:400;line-height:.98}.library-hero>p:last-child{max-width:660px;color:var(--ink-soft);margin:0;font-size:1.08rem;line-height:1.65}.library-toolbar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:1rem;min-height:64px;margin-bottom:1.2rem;display:flex}.library-toolbar p{color:#62737c;margin:0;font-size:.78rem}.text-button{color:var(--ink);text-underline-offset:.25rem;cursor:pointer;background:0 0;border:0;padding:.75rem 0;font-size:.76rem;font-weight:700;text-decoration:underline}.text-button:hover{color:var(--orange)}.lesson-page{padding-bottom:clamp(6rem,10vw,10rem)}.lesson-breadcrumb{padding-top:1.6rem}.lesson-breadcrumb a{color:#5e707a;gap:.7rem;font-size:.75rem;font-weight:700;text-decoration:none;display:inline-flex}.lesson-breadcrumb span{color:var(--orange)}.lesson-header{grid-template-columns:minmax(0,1fr) 280px;gap:2.5rem 5rem;padding-block:clamp(3rem,7vw,5.8rem) clamp(3rem,6vw,5rem);display:grid}.lesson-header h1{margin-bottom:.4rem}.lesson-subtitle{color:var(--ink-soft);margin:0;font-size:clamp(1.1rem,2vw,1.35rem)}.lesson-meta{border-top:1px solid var(--line);margin:1rem 0 0}.lesson-meta div{border-bottom:1px solid var(--line);grid-template-columns:.75fr 1.25fr;gap:1rem;padding:.8rem 0;display:grid}.lesson-meta dt,.lesson-meta dd{margin:0;font-size:.72rem}.lesson-meta dt{color:#687982}.lesson-meta dd{font-weight:700}.lesson-introduction{max-width:680px;color:var(--ink-soft);margin:0;font-size:1.05rem;line-height:1.7}.lesson-player{border-top:1px solid var(--line);padding-top:1rem}.player-progress{justify-content:space-between;align-items:center;gap:2rem;min-height:72px;display:flex}.player-progress ol{align-items:center;gap:0;margin:0;padding:0;list-style:none;display:flex}.player-progress li{color:#7a898f;text-transform:uppercase;letter-spacing:.11em;align-items:center;gap:.62rem;min-width:145px;font-size:.62rem;font-weight:800;display:flex;position:relative}.player-progress li:not(:last-child):after{content:"";border-top:1px solid #c6c3bc;width:35px;position:absolute;left:98px}.player-progress li span{border:1px solid #aaa9a4;border-radius:50%;place-items:center;width:1.65rem;height:1.65rem;font-size:.59rem;display:grid}.player-progress li.active{color:var(--ink)}.player-progress li.active span{border-color:var(--orange);background:var(--orange);color:var(--navy)}.player-progress li.done{color:var(--green)}.player-progress li.done span{border-color:var(--green);color:var(--green)}.review-badge{border:1px solid var(--line);color:var(--green);border-radius:999px;padding:.55rem .72rem;font-size:.67rem;font-weight:700}.lesson-stage{background:var(--paper-light);grid-template-columns:minmax(280px,.78fr) minmax(0,1.22fr);align-items:stretch;display:grid;box-shadow:0 22px 60px #07172412}.scenario-panel{background:var(--navy);color:#fff;padding:clamp(2rem,4vw,3.7rem)}.scenario-panel .section-kicker{color:var(--sky);margin-bottom:2.6rem}.scenario-panel>p:not(.section-kicker){font-family:var(--serif);font-size:clamp(1.32rem,2.1vw,1.75rem);line-height:1.42}.scenario-panel>p+p{color:#b7c9d0;font-family:var(--sans);font-size:.95rem;line-height:1.65}.scenario-facts{border-top:1px solid var(--line-dark);border-left:1px solid var(--line-dark);grid-template-columns:repeat(2,1fr);gap:0;margin:2.5rem 0 0;display:grid}.scenario-facts div{border-right:1px solid var(--line-dark);border-bottom:1px solid var(--line-dark);padding:.95rem}.scenario-facts dt{color:#8fb3c0;text-transform:uppercase;letter-spacing:.12em;margin-bottom:.5rem;font-size:.55rem;font-weight:800}.scenario-facts dd{color:#fff;letter-spacing:.05em;margin:0;font-size:.83rem;font-weight:700}.question-panel{padding:clamp(2rem,5vw,4.4rem)}.question-panel h2,.debrief-intro h2,.transfer-copy h2,.completion-panel h2{max-width:720px;font-family:var(--serif);letter-spacing:-.04em;margin:.8rem 0 2.4rem;font-size:clamp(2.2rem,4vw,3.8rem);font-weight:400;line-height:1.05}.choice-list{gap:.7rem;display:grid}.answer-choice{width:100%;min-height:64px;color:var(--ink);text-align:left;cursor:pointer;background:#fff;border:1px solid #cbc8c0;border-radius:1px;grid-template-columns:2rem 1fr;align-items:center;gap:.9rem;padding:.9rem 1rem;line-height:1.45;transition:border-color .14s,background .14s;display:grid}.answer-choice:hover:not(:disabled){border-color:var(--ink);background:#f9f6ef}.answer-choice:disabled{cursor:default;opacity:1}.choice-letter{color:#60717a;border:1px solid #b5b4ae;border-radius:50%;place-items:center;width:1.9rem;height:1.9rem;font-size:.67rem;font-weight:800;display:grid}.answer-choice.selected.correct{border-color:var(--green);background:#eef5f1}.answer-choice.selected.correct .choice-letter{border-color:var(--green);background:var(--green);color:#fff}.answer-choice.selected.review{background:#fff4ed;border-color:#cb6c39}.answer-choice.selected.review .choice-letter{color:#a64f22;border-color:#cb6c39}.answer-feedback{border-left:3px solid var(--orange);background:#f3eee5;grid-template-columns:2rem 1fr;gap:1rem;margin-top:1.2rem;padding:1.3rem;display:grid}.answer-feedback.is-correct{border-left-color:var(--green);background:#eaf2ee}.feedback-marker{color:#a85325;border:1px solid;border-radius:50%;place-items:center;width:1.75rem;height:1.75rem;font-weight:800;display:grid}.is-correct .feedback-marker{color:var(--green)}.answer-feedback h3{margin:0 0 .55rem;font-size:.96rem}.answer-feedback p{color:var(--ink-soft);margin:0;font-size:.9rem;line-height:1.62}.answer-feedback p+p{margin-top:.55rem}.stage-actions{gap:1rem;margin-top:1.4rem;display:flex}.debrief{padding-top:clamp(3.5rem,7vw,6rem)}.debrief-intro{margin-bottom:3.5rem}.debrief-intro h2{max-width:800px}.debrief-sections{border-top:1px solid var(--line)}.debrief-step{border-bottom:1px solid var(--line);grid-template-columns:.82fr 1.18fr;align-items:center;gap:clamp(2rem,7vw,6rem);padding-block:clamp(3rem,7vw,6rem);display:grid}.debrief-step:nth-child(2n) .debrief-step-copy{order:2}.debrief-step-copy{position:relative}.step-index{color:var(--orange);margin-bottom:3rem;display:block}.debrief-step-copy h3{font-family:var(--serif);letter-spacing:-.035em;margin:.7rem 0 1rem;font-size:clamp(2rem,3.5vw,3.1rem);font-weight:400;line-height:1.05}.debrief-step-copy>p:not(.section-kicker){color:var(--ink-soft);margin:0;line-height:1.7}.debrief-step-copy>p+p{margin-top:.8rem}.lesson-figure{margin:0}.visual-frame,.media-frame,.lesson-video{aspect-ratio:16/10;background:var(--navy);width:100%;position:relative;overflow:hidden}.media-frame img{object-fit:cover}.lesson-video{display:block}.lesson-figure figcaption{color:#647781;text-transform:uppercase;letter-spacing:.12em;margin-top:.75rem;font-size:.61rem;font-weight:800}.principle-panel{background:var(--navy);color:#fff;grid-template-columns:.35fr 1.65fr;gap:2rem;margin-top:clamp(3.5rem,7vw,6rem);padding:clamp(2rem,5vw,4rem);display:grid}.principle-panel>span{color:var(--sky);text-transform:uppercase;letter-spacing:.15em;font-size:.63rem;font-weight:800}.principle-panel blockquote{max-width:780px;font-family:var(--serif);margin:0;font-size:clamp(1.8rem,3.5vw,3rem);line-height:1.2}.end-actions{justify-content:flex-end;padding-top:1rem}.schematic{position:absolute;inset:0;overflow:hidden}.schematic:before{content:"";z-index:5;pointer-events:none;background-image:linear-gradient(#9dc6d40a 1px,#0000 1px),linear-gradient(90deg,#9dc6d40a 1px,#0000 1px);background-size:26px 26px;position:absolute;inset:0}.aircraft-shape{width:66px;height:28px;position:absolute}.aircraft-wing,.aircraft-body{background:#fff;display:block;position:absolute}.aircraft-wing{height:2px;top:13px;left:0;right:0}.aircraft-body{width:3px;height:25px;top:2px;left:31px}.approach-sky,.energy-sky{background:linear-gradient(#12384e,#285367);position:absolute;inset:0 0 36%}.approach-ground,.energy-ground{background:#0a1c24;position:absolute;inset:64% 0 0}.runway{z-index:1;clip-path:polygon(33% 0,48% 0,100% 100%,0 100%);opacity:.38;background:#d5d7d2;width:49%;height:25%;position:absolute;bottom:5%;right:-3%}.runway:after{content:"";background:repeating-linear-gradient(#fff 0 12px,#0000 12px 22px);width:3px;height:100%;position:absolute;left:40%}.desired-path,.actual-path{z-index:2;transform-origin:0;width:82%;position:absolute;left:-5%}.desired-path{border-top:2px dashed #d4eaefb3;top:47%;transform:rotate(11deg)}.unstable-approach .actual-path{border-top:3px solid var(--orange);top:23%;transform:rotate(5deg)}.go-around .actual-path{border-top:3px solid var(--orange);top:58%;transform:rotate(-18deg)}.aircraft-position{z-index:4;width:66px;height:28px;position:absolute}.unstable-approach .aircraft-position{top:17%;left:30%;transform:rotate(5deg)}.go-around .aircraft-position{top:31%;left:43%;transform:rotate(-18deg)}.data-flag,.decision-gate,.energy-altitude,.energy-speed,.drag-stream,.fix-label{z-index:4;color:#fff;letter-spacing:.13em;background:#071724b8;border:1px solid #ffffff47;padding:.48rem .58rem;font-size:.57rem;font-weight:800;position:absolute}.flag-high{top:19%;left:14%}.flag-fast{color:var(--orange-soft);top:13%;left:44%}.decision-gate{color:var(--sky);border-color:#9dc6d480;bottom:23%;right:26%}.decision-gate:after{content:"";border-left:1px dashed #9dc6d480;height:85px;position:absolute;top:100%;left:50%}.flag-climb{color:#d1eee4;border-color:#8fd1bb73;top:22%;left:55%}.pfd-schematic{background:#07131d;place-items:center;padding:6%;display:grid}.pfd-screen{background:#1f4f68;border:1px solid #cfe4e94d;width:min(88%,470px);height:78%;position:relative;overflow:hidden;box-shadow:0 0 0 8px #00000038}.sky-field,.ground-field{position:absolute;inset-inline:0}.sky-field{background:#316b88;inset-block:0 48%}.ground-field{background:#614a39;inset-block:52% 0}.horizon-line{z-index:1;border-top:3px solid #fff;width:120%;position:absolute;top:50%;left:-10%}.pitch-mark{z-index:2;border-top:2px solid #ffffffd1;width:16%;position:absolute;left:42%}.pitch-up{top:38%}.pitch-down{top:62%}.fixed-aircraft{z-index:3;border-top:4px solid #f4c74d;width:32%;height:18px;position:absolute;top:calc(50% - 2px);left:34%}.fixed-aircraft span{background:0 0;border:3px solid #f4c74d;border-radius:50%;width:10px;height:10px;position:absolute;top:-8px;left:calc(50% - 5px)}.glideslope-scale{z-index:3;flex-direction:column;justify-content:space-between;align-items:center;width:26px;display:flex;position:absolute;top:13%;bottom:13%;right:7%}.glideslope-scale i{border:1px solid #f1f2ef;border-radius:50%;width:5px;height:5px}.gs-pointer{border:2px solid #e852db;width:13px;height:13px;transition:top .3s;position:absolute;left:-10px;transform:rotate(45deg)}.gs-pointer.high{top:5%}.gs-pointer.near{top:31%}.gs-pointer.center{top:calc(50% - 7px)}.pfd-label,.speed-readout,.alt-readout{z-index:3;color:#fff;letter-spacing:.08em;font-size:.55rem;font-weight:800;position:absolute}.pfd-label{color:#f4a9ef;bottom:5%;right:6%}.speed-readout{background:#0a1921;padding:.3rem;top:47%;left:3%}.alt-readout{background:#0a1921;padding:.3rem;top:47%;right:16%}.relationship-note{z-index:4;color:#b8cfd7;text-transform:uppercase;letter-spacing:.1em;gap:.7rem;font-size:.48rem;font-weight:800;display:flex;position:absolute;bottom:5%;right:8%}.relationship-path:before,.relationship-aircraft:before{content:"";background:#e852db;border-radius:50%;width:8px;height:8px;margin-right:.35rem;display:inline-block}.relationship-aircraft:before{background:#f4c74d}.energy-target-path{z-index:2;transform-origin:0;border-top:2px dashed #c8e3eab3;width:118%;position:absolute;top:52%;left:-7%;transform:rotate(10deg)}.energy-aircraft{z-index:4;width:66px;height:28px;transition:left .3s,top .3s;position:absolute}.energy-high .energy-aircraft{top:22%;left:19%;transform:rotate(5deg)}.energy-manage .energy-aircraft{top:32%;left:33%;transform:rotate(8deg)}.energy-recovering .energy-aircraft{top:41%;left:51%;transform:rotate(9deg)}.fix-line{z-index:2;border-left:1px dashed #9dc6d48c;height:55%;position:absolute;top:42%;right:14%}.fix-label{color:var(--sky);bottom:9%;right:4%}.energy-altitude{color:var(--orange-soft);top:13%;left:12%}.energy-speed{color:var(--orange-soft);top:21%;left:42%}.energy-recovering .energy-altitude{color:#d2eee5;top:29%;left:39%}.energy-recovering .energy-speed{color:#d2eee5;top:30%;left:62%}.energy-manage .energy-speed{color:#d2eee5}.drag-stream{color:var(--orange-soft);border-color:#ee7b3a6b;bottom:13%;left:20%}.transfer-stage{background:var(--paper-light);grid-template-columns:.72fr 1.28fr;margin-top:clamp(2rem,5vw,4rem);display:grid;box-shadow:0 22px 60px #07172412}.transfer-copy{background:var(--navy);color:#fff;padding:clamp(2rem,4vw,3.5rem)}.transfer-copy .section-kicker{color:var(--sky)}.transfer-copy h2{margin-top:2.5rem;font-size:clamp(2.25rem,4vw,3.5rem)}.transfer-copy>p:last-child{color:#b8cbd2;line-height:1.65}.transfer-question{padding:clamp(2rem,5vw,4rem)}.transfer-question>h3{font-family:var(--serif);margin:0 0 2rem;font-size:clamp(1.55rem,2.7vw,2.3rem);font-weight:400;line-height:1.3}.completion-panel{background:var(--navy);color:#fff;text-align:center;margin-top:2rem;padding:clamp(3rem,8vw,7rem)}.completion-check{color:#a8dbc8;border:1px solid #7fc0a9;border-radius:50%;place-items:center;width:4rem;height:4rem;margin:0 auto 2rem;font-size:1.4rem;display:grid}.completion-panel .section-kicker{color:var(--sky)}.completion-panel h2{margin-inline:auto;margin-bottom:2rem}.completion-panel blockquote{max-width:780px;color:var(--paper-light);font-family:var(--serif);margin:0 auto 1.5rem;font-size:clamp(1.6rem,3vw,2.6rem);line-height:1.3}.completion-panel>p:not(.section-kicker){color:#adc2ca;max-width:610px;margin:0 auto;line-height:1.65}.completion-actions{justify-content:center;gap:1rem;margin-top:2.5rem;display:flex}.site-footer{border-top:1px solid var(--line-dark);background:var(--navy);color:#fff;padding-block:3.2rem}.footer-grid{justify-content:space-between;gap:3rem;display:flex}.footer-brand{font-size:1.15rem}.footer-grid p{color:#8fa9b3;margin:.8rem 0 0;font-size:.72rem}.footer-note{text-align:right}.footer-note p+p{color:#708892}.not-found-page{padding-block:clamp(6rem,14vw,12rem)}.not-found-page h1{max-width:780px}.not-found-page>p:not(.section-kicker){color:var(--ink-soft);margin:0 0 2rem}@media (max-width:920px){.lesson-grid{grid-template-columns:1fr}.lesson-card{min-height:380px}.lesson-card-copy{margin-top:3rem}.lesson-header{grid-template-columns:1fr;gap:2rem}.lesson-meta{max-width:520px}.lesson-stage,.transfer-stage,.debrief-step{grid-template-columns:1fr}.debrief-step:nth-child(2n) .debrief-step-copy{order:initial}.visual-frame{max-height:520px}}@media (max-width:720px){.shell{width:min(100% - 2rem,1180px)}.nav-shell{min-height:68px}.progress-pill{display:none}nav{gap:1rem}.hero-inner{min-height:auto;padding-top:4rem}.home-hero h1{font-size:clamp(3.55rem,17vw,5.2rem)}.hero-actions,.completion-actions{flex-direction:column;align-items:flex-start}.primary-button,.secondary-button{width:100%}.hero-instrument{grid-template-columns:1fr}.instrument-copy{border-right:0;border-bottom:1px solid var(--line-dark)}.instrument-diagram{min-height:250px}.section-heading-row,.section-heading-row.compact,.access-section{grid-template-columns:1fr;gap:1.7rem}.section-heading-row{margin-bottom:2.6rem}.method-grid{grid-template-columns:1fr}.method-grid article{min-height:auto;padding:2rem 0}.method-grid article+article{border-left:0;border-top:1px solid var(--line);padding-left:0}.method-grid h3{margin-top:1.8rem}.access-note{margin-top:1rem}.library-hero h1,.lesson-header h1,.not-found-page h1{font-size:clamp(3rem,14vw,4.4rem)}.library-toolbar,.player-progress{flex-direction:column;align-items:flex-start;padding-block:1rem}.player-progress li{min-width:96px}.player-progress li:not(:last-child):after{display:none}.scenario-panel,.question-panel,.transfer-copy,.transfer-question{padding:1.6rem}.scenario-facts{grid-template-columns:1fr 1fr}.answer-choice{grid-template-columns:1.8rem 1fr;padding-inline:.8rem}.stage-actions{flex-direction:column}.principle-panel{grid-template-columns:1fr}.footer-grid{flex-direction:column}.footer-note{text-align:left}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}
:root{--orange-text:#a85325;--focus:#a85325}.section-kicker,.eyebrow{color:var(--ink-soft)}.home-hero h1 em,.step-index,.lesson-breadcrumb span,.text-button:hover,.text-link:hover{color:var(--orange-text)}.site-header nav a:hover{color:var(--orange)}
