:root{--rail:#171613}
.fund-exercise-page{background:var(--panel)}
.exercise-shell{display:grid;grid-template-columns:310px minmax(0,1fr);min-height:calc(100vh - 86px)}
.exercise-rail{position:sticky;top:86px;height:calc(100vh - 86px);display:flex;flex-direction:column;justify-content:space-between;gap:28px;padding:44px 30px;background:var(--rail);color:#f6f0e2;border-right:1px solid rgba(197,155,46,.38);overflow:auto}
.rail-kicker,.exercise-rail .eyebrow{margin:0 0 10px;color:var(--gold);font-size:.68rem;font-weight:900;letter-spacing:.14em;text-transform:uppercase}
.exercise-rail h2{margin:0;font-size:2.5rem;line-height:.96}.rail-copy{color:#c5b9a5;line-height:1.55;font-size:.9rem}
.exercise-list{display:grid;border-top:1px solid rgba(255,255,255,.12)}
.exercise-list a,.exercise-list>span{display:grid;grid-template-columns:32px 1fr;gap:8px;padding:11px 0;border-bottom:1px solid rgba(255,255,255,.1);color:#bfb4a2;font-size:.78rem;text-decoration:none}
.exercise-list a.active{color:#fff}.exercise-list a.active span{color:var(--gold)}.exercise-list b{color:#7f7567}.exercise-list .more{display:block;color:#82796d;font-size:.68rem;line-height:1.5}
.rail-back{color:var(--gold);font-weight:800;text-decoration:none;font-size:.78rem}
.exercise-lesson{max-width:1240px;width:100%;margin:0 auto;padding:64px 58px 80px}
.lesson-heading{display:flex;justify-content:space-between;align-items:end;gap:30px;padding-bottom:28px;border-bottom:1px solid var(--line)}
.lesson-heading h1{margin:4px 0 0;font-size:clamp(3.6rem,7vw,7rem);line-height:.86}.lesson-subtitle{margin:18px 0 0;color:var(--muted);font-family:var(--heading-font);font-size:1.65rem}.lesson-count{color:var(--red);font-family:var(--heading-font);font-size:2rem}
.lesson-intro{display:grid;grid-template-columns:minmax(320px,.85fr) minmax(380px,1fr);gap:52px;padding:48px 0 60px}
.lesson-main-photo{margin:0;background:#dedbd2;border:1px solid var(--line);overflow:hidden}.lesson-main-photo img{display:block;width:100%;height:100%;min-height:610px;object-fit:cover;object-position:center}
.lesson-instruction{display:grid;align-content:center;gap:36px}.lesson-instruction section+section{padding-top:32px;border-top:1px solid var(--line)}.lesson-instruction h2,.sequence-heading h2{margin:5px 0 15px;font-size:clamp(2rem,3.5vw,3.5rem);line-height:1}.lesson-instruction p:not(.eyebrow),.sequence-heading>p,.lesson-note>p:last-child{color:var(--muted);line-height:1.7}
.sequence-section{padding:48px 0 56px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.sequence-heading{display:grid;grid-template-columns:1fr .65fr;gap:40px;align-items:end;margin-bottom:30px}.sequence-heading>p{margin:0}
.sequence-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.sequence-grid figure{margin:0;background:#ece8dc;border:1px solid var(--line)}.sequence-grid img{display:block;width:100%;aspect-ratio:181/277;object-fit:cover}.sequence-grid figcaption{display:grid;grid-template-columns:auto 1fr;column-gap:10px;row-gap:3px;padding:15px}.sequence-grid figcaption span{grid-row:1/3;color:var(--red);font-family:var(--heading-font);font-size:1.45rem}.sequence-grid strong{font-family:var(--heading-font);font-size:1.2rem}.sequence-grid small{color:var(--muted);line-height:1.35}
.lesson-note{max-width:840px;padding:44px 0}.lesson-nav{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding-top:24px;border-top:1px solid var(--line);font-size:.8rem}.lesson-nav strong{text-align:center}.lesson-nav span:last-child{text-align:right}.lesson-nav .disabled{color:#9b9284}
@media(max-width:1000px){.exercise-shell{grid-template-columns:1fr}.exercise-rail{position:relative;top:0;height:auto}.exercise-list{display:none}.lesson-intro{grid-template-columns:1fr}.lesson-main-photo img{min-height:0;max-height:700px;object-fit:contain}.sequence-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){.exercise-lesson{padding:42px 20px 60px}.lesson-heading{align-items:start}.lesson-count{font-size:1.3rem}.sequence-heading{grid-template-columns:1fr}.sequence-grid{grid-template-columns:1fr 1fr}.lesson-nav{grid-template-columns:1fr;gap:10px;text-align:center}.lesson-nav span:last-child{text-align:center}}