.field-notes{background:var(--ocean);color:var(--ivory)}.field-notes a:focus-visible{outline:2px solid var(--lime);outline-offset:5px}.field-notes .field-nav{position:relative;background:var(--deep)}.field-notes .field-back{justify-self:end;color:var(--ivory);font:500 .68rem var(--mono);letter-spacing:.09em;text-decoration:none;text-transform:uppercase}.field-notes .field-back span{color:var(--lime)}.field-hero{min-height:680px;padding:clamp(7rem,13vw,12rem) 3.5vw 5rem;display:grid;grid-template-columns:minmax(0,1.55fr) minmax(260px,.45fr);gap:7vw;align-items:end;background:radial-gradient(circle at 78% 15%,#19434a 0,transparent 36%),linear-gradient(145deg,#061b20 30%,#0b3037);border-bottom:1px solid var(--line)}.field-hero-copy{max-width:1020px}.field-hero h1{font:800 clamp(5rem,11.5vw,11rem)/.76 var(--display);letter-spacing:-.045em;text-transform:uppercase;margin:2rem 0 2.5rem}.field-hero h1 em{color:var(--lime);font-style:italic}.field-lede{max-width:720px;color:#c3d5d5;font-size:clamp(1.05rem,1.7vw,1.35rem);line-height:1.65}.field-index{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}.field-index li{border-bottom:1px solid var(--line)}.field-index a{display:flex;gap:1.4rem;padding:1.15rem 0;color:var(--ivory);font:600 1rem var(--display);letter-spacing:.08em;text-decoration:none;text-transform:uppercase}.field-index a:hover{color:var(--lime)}.field-index span{color:var(--aqua);font:400 .65rem var(--mono)}.field-image{margin:0;background:var(--deep)}.field-image img{display:block;width:100%;height:auto;max-height:80vh;object-fit:cover}.field-image figcaption,.foil-figure figcaption{display:flex;gap:2rem;padding:1rem 3.5vw;color:#94adae;font:400 .68rem/1.65 var(--mono)}.field-image figcaption span{color:var(--lime);text-transform:uppercase;white-space:nowrap}.field-chapter{padding:clamp(5rem,9vw,9rem) 3.5vw;background:var(--ivory);color:var(--ink);scroll-margin-top:2rem}.chapter-head{display:grid;grid-template-columns:minmax(150px,.45fr) minmax(300px,1.1fr) minmax(260px,.6fr);gap:3vw;align-items:end;margin-bottom:4.5rem}.chapter-number,.card-kicker{font:500 .66rem/1.5 var(--mono);letter-spacing:.13em;text-transform:uppercase}.chapter-number{align-self:start;color:#52706e;margin:0}.chapter-head h2{font:800 clamp(3.8rem,7vw,7.6rem)/.82 var(--display);letter-spacing:-.035em;text-transform:uppercase;margin:0}.chapter-head>p:last-child{font-size:1.04rem;line-height:1.75;margin:0}.equation-panel{display:grid;grid-template-columns:1.6fr .8fr;background:var(--ocean);color:var(--ivory);border-left:4px solid var(--lime)}.equation-main{padding:clamp(1.5rem,4vw,3.5rem)}.equation-main>span{color:var(--aqua);font:500 .65rem var(--mono);letter-spacing:.12em;text-transform:uppercase}.equation-main p{font:400 clamp(1.2rem,2.5vw,2.4rem)/1.4 var(--mono);margin:2.2rem 0 0;overflow-wrap:anywhere}.equation-key{display:grid;grid-template-columns:1fr 1fr;margin:0;border-left:1px solid var(--line)}.equation-key div{padding:1.5rem;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.equation-key dt{color:var(--lime);font:500 1rem var(--mono)}.equation-key dd{color:#a9c0c1;font-size:.78rem;line-height:1.5;margin:.5rem 0 0}.field-grid{display:grid;gap:1.5rem;margin-top:1.5rem}.two-up{grid-template-columns:1fr 1fr}.field-card,.feel-card,.formula-row article,.energy-compare article{padding:clamp(1.6rem,3vw,3rem);border:1px solid #13393b24}.field-card{background:var(--paper)}.feel-card{background:var(--lime)}.field-card h3,.feel-card h3,.learning-note h3{font:700 clamp(2.2rem,3.6vw,4rem)/.9 var(--display);letter-spacing:-.02em;text-transform:uppercase;margin:1.5rem 0}.field-card p,.feel-card p,.formula-row p,.energy-compare p{line-height:1.7}.feel-card a{display:inline-block;margin-top:1rem;color:var(--ink);font:500 .68rem var(--mono);letter-spacing:.08em;text-transform:uppercase;text-underline-offset:5px}.small-equation{font:500 clamp(1.1rem,2vw,1.75rem)/1.5 var(--mono);color:#174945;margin:1.4rem 0;overflow-wrap:anywhere}.multiline{line-height:1.8}.field-chapter-dark{background:radial-gradient(circle at 90% 18%,#123b43,transparent 35%),var(--ocean);color:var(--ivory)}.field-chapter-dark .chapter-number,.field-chapter-dark .card-kicker{color:var(--aqua)}.field-chapter-dark .chapter-head>p:last-child,.field-chapter-dark .field-card p,.field-chapter-dark .formula-row p{color:#bad0d0}.foil-figure{margin:0;border:1px solid var(--line);background:#03171b}.foil-figure svg{display:block;width:100%;height:auto}.foil-figure figcaption{padding:1rem 1.5rem;border-top:1px solid var(--line)}.waterline{fill:none;stroke:#61d7ca;stroke-width:4}.foil-shape{fill:#c8ff3d;stroke:#f2efe4;stroke-width:2}.chord{stroke:#061b20;stroke-width:2;stroke-dasharray:8 7}.flow-arrow,.lift-arrow,.drag-arrow{stroke-width:5}.flow-arrow{stroke:#61d7ca}.lift-arrow{stroke:#c8ff3d}.drag-arrow{stroke:#f2efe4}.angle-arc{fill:none;stroke:#c8ff3d;stroke-width:3}.bank-ring{fill:none;stroke:#315159;stroke-width:2;stroke-dasharray:5 7}.bank-axis{stroke:#f2efe4;stroke-width:6}.bank-lift{stroke:#c8ff3d;stroke-width:4}.svg-label{fill:#f2efe4;font:600 20px var(--display);letter-spacing:2px}.svg-label.aqua{fill:#61d7ca}.svg-label.lime{fill:#c8ff3d}.svg-micro{fill:#83a0a2;font:500 11px var(--mono);letter-spacing:1.5px}.formula-row{display:grid;grid-template-columns:1fr 1fr;margin-top:1.5rem;border:1px solid var(--line)}.formula-row article{border:0;border-right:1px solid var(--line)}.formula-row article:last-child{border:0}.field-chapter-dark .small-equation{color:var(--lime)}.coefficient-grid .field-card{background:#0b3037;border-color:var(--line)}.decision-table{border-top:1px solid #9ca8a1}.decision-row{display:grid;grid-template-columns:.65fr 1fr 1fr;border-bottom:1px solid #b8bdb4}.decision-row>*{margin:0;padding:1.4rem;border-right:1px solid #c8c9bf;line-height:1.6}.decision-row>*:last-child{border:0}.decision-row h3{font:700 1.5rem var(--display);text-transform:uppercase}.decision-head{color:#58706e;font:500 .63rem var(--mono);letter-spacing:.1em;text-transform:uppercase}.learning-note{margin-top:1.5rem;padding:clamp(2rem,4vw,4rem);display:grid;grid-template-columns:.4fr .7fr 1fr;gap:3vw;background:var(--ocean);color:var(--ivory);align-items:start}.learning-note .card-kicker{color:var(--aqua)}.learning-note h3{font-size:clamp(2.2rem,3.5vw,3.8rem);margin:0}.learning-note>p:last-child{color:#b8cece;line-height:1.75;margin:0}.energy-chapter{background:#c8ff3d}.energy-compare{display:grid;grid-template-columns:1fr 1fr;background:var(--ivory);border:1px solid #10292b}.energy-compare article{border:0;border-right:1px solid #10292b}.energy-compare article:last-child{border:0}.coast-chapter{background:var(--paper)}.coast-boundary{display:grid;grid-template-columns:.4fr 1fr;background:var(--ocean);color:var(--ivory);padding:2rem;gap:3vw}.coast-boundary span{color:var(--lime);font:500 .66rem var(--mono);letter-spacing:.13em;text-transform:uppercase}.coast-boundary p{max-width:760px;line-height:1.7;margin:0}.reference-chapter{background:var(--ocean);color:var(--ivory)}.reference-chapter .chapter-number{color:var(--aqua)}.reference-chapter .chapter-head>p:last-child{color:#b8cece}.reference-list{border-top:1px solid var(--line)}.reference-list a{display:grid;grid-template-columns:.42fr .85fr 1fr;gap:2rem;padding:1.4rem 0;border-bottom:1px solid var(--line);color:var(--ivory);text-decoration:none;align-items:baseline}.reference-list a:hover strong{color:var(--lime)}.reference-list span,.reference-list i{font:400 .67rem/1.5 var(--mono)}.reference-list span{color:var(--aqua);text-transform:uppercase;letter-spacing:.09em}.reference-list strong{font:600 clamp(1.3rem,2vw,2rem) var(--display);text-transform:uppercase}.reference-list i{color:#91a9aa;font-style:normal}.scope-note{max-width:880px;color:#93aaab;font:400 .7rem/1.8 var(--mono);margin:3rem 0 0}.field-footer a{color:inherit;text-underline-offset:4px}@media(max-width:900px){.field-hero{grid-template-columns:1fr;min-height:auto}.field-index{max-width:600px}.chapter-head{grid-template-columns:1fr 2fr}.chapter-head>p:last-child{grid-column:2}.equation-panel{grid-template-columns:1fr}.equation-key{border-left:0;border-top:1px solid var(--line)}.learning-note{grid-template-columns:1fr 1fr}.learning-note>p:last-child{grid-column:2}}@media(max-width:600px){.field-notes .field-nav{grid-template-columns:1fr auto}.field-notes .field-back{font-size:.58rem}.field-hero{padding:6rem 1rem 4rem}.field-hero h1{font-size:clamp(4rem,20vw,6rem)}.field-image figcaption,.foil-figure figcaption{display:block;padding:1rem}.field-image figcaption span{display:block;margin-bottom:.5rem}.field-chapter{padding:5rem 1rem}.chapter-head{grid-template-columns:1fr;gap:1.5rem;margin-bottom:3rem}.chapter-head>p:last-child{grid-column:1}.two-up,.formula-row,.energy-compare{grid-template-columns:1fr}.formula-row article,.energy-compare article{border-right:0;border-bottom:1px solid currentColor}.equation-key{grid-template-columns:1fr}.equation-main p{font-size:1rem}.equation-key div{padding:1rem}.foil-figure svg{min-height:420px;object-fit:cover}.svg-micro{font-size:9px}.svg-label{font-size:16px}.decision-head{display:none}.decision-row{grid-template-columns:1fr}.decision-row>*{border-right:0;padding:1rem}.decision-row h3{padding-bottom:.2rem}.decision-row p{padding-top:.4rem}.learning-note{grid-template-columns:1fr}.learning-note>p:last-child{grid-column:1}.coast-boundary,.reference-list a{grid-template-columns:1fr;gap:.7rem}.reference-list a{padding:1.5rem 0}}@media(prefers-reduced-motion:reduce){.field-notes{scroll-behavior:auto}}
