.m-topline{display:flex;justify-content:space-between;gap:20px;align-items:center;font-size:13px;color:var(--g-mint);margin:16px 0}.m-rail{display:flex;gap:8px;overflow-x:auto;padding:10px 0 20px;margin-bottom:22px;scrollbar-width:thin}.m-rail button{white-space:nowrap;border-radius:30px;font-size:14px;padding:10px 16px;flex-shrink:0}.m-rail .active{background:var(--g-mint);color:var(--g-ink);border-color:var(--g-mint)}.m-custom{display:flex;gap:10px;margin:22px 0}.m-custom input{min-width:0;flex:1}.m-bank-head{display:flex;align-items:center;gap:25px;margin:22px 0}.m-bank-head input{min-width:0;flex:1}.m-bank-head span{white-space:nowrap;color:var(--g-mint)}.m-compass{padding:26px;border:1px solid var(--g-line);border-radius:18px;background:#101913}.m-compass>div{border-bottom:1px solid var(--g-line);padding:16px 0}.m-compass>div:last-child{border:0}.m-compass small{color:var(--g-mint);letter-spacing:.12em}.m-compass p{margin:8px 0;font-size:18px}.m-foundation{border-left:2px solid var(--g-mint);padding:20px 28px;background:#102219}.m-foundation h2{font-size:36px;margin:16px 0}.m-foundation p{margin:24px 0}.m-check{display:flex;align-items:center;gap:12px;font-size:15px;margin:20px 0;cursor:pointer}.m-check input{width:20px;height:20px;flex-shrink:0}.m-four>div{display:flex;gap:20px;border-bottom:1px solid var(--g-line);padding:22px 0}.m-four span{color:var(--g-mint)}.m-four strong{font-size:20px;font-weight:400}.m-belief,.m-filter,.m-scale,.m-headline{padding:24px;border:1px solid var(--g-line);border-radius:16px;margin-bottom:22px;background:#0e1712}.m-row{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:20px;font-size:14px}.m-row span{color:var(--g-muted)}.m-row output{color:var(--g-mint);white-space:nowrap}.m-priority-list{margin-top:30px}.m-priority-list>div{display:flex;justify-content:space-between;gap:15px;padding:15px 0;border-bottom:1px solid var(--g-line)}.m-pair{display:grid;grid-template-columns:1fr 30px 1fr;align-items:center;gap:15px}.m-pair>span{font:36px Georgia;color:var(--g-mint);text-align:center}.m-pair-poster{background:var(--g-mint);color:var(--g-ink);padding:35px;border-radius:18px}.m-pair-poster>span{letter-spacing:.12em;font-size:12px}.m-pair-poster strong{display:block;font-size:clamp(27px,3vw,44px);font-weight:400;line-height:1.2;margin-top:30px;overflow-wrap:anywhere}.m-pair-poster em{display:block;font:italic 30px Georgia;margin:20px 0}.m-scale-ends{display:grid;grid-template-columns:1fr 1fr;gap:22px}.m-scale input[type=range]{width:100%;accent-color:var(--g-mint);padding:0;margin:18px 0;background:transparent;min-height:40px}.m-source{padding:20px;background:#203828;border-radius:10px;margin:16px 0 25px}.m-source p{margin:10px 0 0}.m-aida{margin-bottom:26px}.m-aida>span{display:block;color:var(--g-mint);letter-spacing:.1em;font-size:13px;margin-bottom:16px}.m-us{display:grid;grid-template-columns:1fr 1fr;gap:6px 15px}.m-us .m-check{margin:10px 0}.m-writing-tip{padding:25px;border-left:2px solid var(--g-mint);margin:30px 0}.m-writing-tip p{margin:12px 0}.m-review{padding:25px;border:1px solid var(--g-line);border-radius:15px}.m-review h2{font-size:40px;color:var(--g-mint)}.m-review button{display:block;margin:12px 0;width:100%}.m-followup{margin-top:30px}.m-brief p{white-space:pre-wrap;overflow-wrap:anywhere}.m-workspace .m-brief .grid3{grid-template-columns:1fr}.m-workspace .m-brief{padding:0}.m-workspace .m-brief h2{font-size:28px}.m-workspace textarea{min-height:145px}.g-chapters{overflow-x:auto}.g-chapters>button{flex-shrink:0}@media(max-width:600px){.m-topline{align-items:flex-start;flex-direction:column}.m-topline .g-person{width:100%;justify-content:space-between}.m-pair{grid-template-columns:1fr}.m-pair>span{margin:-15px 0 5px}.m-scale-ends{gap:12px}.m-belief,.m-filter,.m-scale,.m-headline{padding:18px}.m-row{font-size:13px}.m-us{grid-template-columns:1fr 1fr}.m-priority-list>div{align-items:flex-start}.m-priority-list button{flex-shrink:0}.m-custom{flex-wrap:wrap}.m-custom input{width:100%;flex-basis:70%}.m-bank-head{gap:12px}.m-workspace .g-choice{overflow-wrap:anywhere}.m-workspace .g-choice-grid{grid-template-columns:1fr 1fr}}@media print{.m-brief{color:#111!important}.m-brief h3{break-after:avoid}.m-brief .brief-pair{break-inside:avoid}}
/* Keep exercise navigation horizontal despite the original sidebar's nav styles. */
.guided nav.m-rail{flex-direction:row;flex-wrap:nowrap;max-width:100%;width:100%;min-width:0;align-items:center}.guided nav.m-rail button{width:auto;min-width:max-content}

.m-mobile-nav{display:none}@media(max-width:600px){.guided nav.m-rail{display:none}.m-mobile-nav{display:block;margin:22px 0 30px;font-size:14px;color:var(--g-muted)}.m-mobile-nav select{margin-top:8px;width:100%;font-size:16px}}
.guided nav.m-rail button.active{background:var(--g-mint);color:var(--g-ink);border-color:var(--g-mint)}