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h2{font-size:1.35rem;font-weight:700;color:var(--middle-text);letter-spacing:-.01em;margin-bottom:.75rem}.middle-group h3{font-size:1.05rem;font-weight:600;color:var(--middle-text);margin-bottom:.5rem}.middle-group .body-text{font-size:.95rem;color:var(--middle-text-2);line-height:1.8}.middle-group .body-text+.body-text{margin-top:.75rem}.middle-group .body-text strong{color:var(--middle-text);font-weight:600}.middle-group .timing{font-size:.75rem;font-weight:500;color:var(--middle-text-3);float:right;margin-top:.2rem}.middle-group .divider{border:none;border-top:1px solid var(--middle-border);margin:2.5rem 0}.middle-group .callout{border-left:3px solid var(--middle-border);padding:1rem 1.25rem;margin:1.5rem 0}.middle-group .callout.warm{border-left-color:var(--middle-accent);background:var(--middle-accent-bg)}.middle-group .callout.cool{border-left-color:var(--middle-cool);background:var(--middle-cool-bg)}.middle-group .callout .callout-label{font-size:.7rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--middle-text-3);margin-bottom:.4rem}.middle-group .callout.warm .callout-label{color:var(--middle-accent)}.middle-group .callout.cool .callout-label{color:var(--middle-cool)}.middle-group .callout p{font-size:.9rem;color:var(--middle-text-2);line-height:1.7}.middle-group .callout p strong{color:var(--middle-text)}.middle-group .callout p+p{margin-top:.6rem}.middle-group .steps{margin:1.5rem 0}.middle-group .step{display:flex;gap:1rem;align-items:baseline;padding:.75rem 0;border-bottom:1px solid var(--middle-border)}.middle-group .step:last-child{border-bottom:none}.middle-group .step-num{font-size:.8rem;font-weight:700;color:var(--middle-text-3);flex-shrink:0;width:1.5rem;text-align:right}.middle-group .step-content{flex:1}.middle-group .step-q{font-size:.95rem;font-weight:600;color:var(--middle-text)}.middle-group .step-hint{font-size:.82rem;color:var(--middle-text-3);margin-top:.15rem;line-height:1.6}.middle-group .accordion{margin:1.5rem 0;border:1px solid var(--middle-border);border-radius:8px;overflow:hidden}.middle-group .acc-item{border-bottom:1px solid var(--middle-border)}.middle-group .acc-item:last-child{border-bottom:none}.middle-group .acc-header{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.25rem;cursor:pointer;background:var(--middle-surface);transition:background .15s;user-select:none}.middle-group .acc-header:hover{background:var(--middle-bg)}.middle-group .acc-title{font-size:.95rem;font-weight:600;color:var(--middle-text)}.middle-group .acc-icon{font-size:1.1rem;color:var(--middle-text-3);transition:transform .2s;font-weight:300;line-height:1}.middle-group .acc-item.open .acc-icon{transform:rotate(45deg)}.middle-group .acc-body{display:none;padding:0 1.25rem 1.25rem;background:var(--middle-surface)}.middle-group .acc-item.open 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.letter-name{font-size:.95rem;font-weight:600;color:var(--middle-text)}.middle-group .letter-brief{font-size:.8rem;color:var(--middle-text-3);margin-top:.1rem}.middle-group .letter-detail{display:none;padding:1.25rem;background:var(--middle-bg);border-top:1px solid var(--middle-border)}.middle-group .letter-card.active .letter-detail{display:block}.middle-group .letter-detail p{font-size:.9rem;color:var(--middle-text-2);line-height:1.75}.middle-group .letter-detail .aside{margin-top:.75rem;font-size:.85rem;font-style:italic;color:var(--middle-text-3);padding-left:1rem;border-left:2px solid var(--middle-border)}.middle-group .letter-detail .aside strong{color:var(--middle-text-2);font-style:normal}.middle-group .scenario-stack{margin:1.5rem 0}.middle-group .scenario-card{border:1px solid var(--middle-border);border-radius:8px;overflow:hidden;margin-bottom:.75rem}.middle-group .scenario-body{padding:1.5rem 1.5rem 1.25rem;background:var(--middle-surface)}.middle-group 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var(--middle-border);border-radius:4px;font-family:inherit;font-size:.88rem;color:var(--middle-text);background:var(--middle-bg);line-height:1.55;resize:vertical;transition:border-color .15s,background .15s;box-sizing:border-box}.middle-group .synth-field textarea:focus{outline:none;border-color:var(--middle-accent);background:var(--middle-surface)}.middle-group .synth-actions{padding:0 1.5rem 1.25rem;text-align:center}.middle-group .synth-btn{padding:.7rem 1.5rem;border:1.5px solid var(--middle-accent);border-radius:4px;background:var(--middle-surface);color:var(--middle-accent);font-family:inherit;font-size:.85rem;font-weight:700;letter-spacing:.03em;cursor:pointer;transition:all .15s}.middle-group .synth-btn:hover{background:var(--middle-accent);color:var(--middle-surface)}.middle-group .synth-result{padding:1.5rem;background:var(--middle-bg);border-top:1px solid var(--middle-border)}.middle-group .synth-result[hidden]{display:none}.middle-group .synth-statement{font-size:1rem;color:var(--middle-text);line-height:1.85;padding:1.1rem 1.25rem;background:var(--middle-surface);border-left:3px solid var(--middle-accent);border-radius:4px;margin-bottom:1rem}.middle-group .synth-statement strong{color:var(--middle-accent)}.middle-group .synth-statement .synth-and{color:var(--middle-accent);font-weight:700}.middle-group .synth-checks{margin-bottom:1rem}.middle-group .synth-check{display:flex;gap:.6rem;align-items:baseline;font-size:.86rem;color:var(--middle-text-2);line-height:1.65;padding:.4rem 0}.middle-group .synth-check .ck{font-weight:700;flex-shrink:0}.middle-group .synth-check.pass .ck{color:var(--middle-cool)}.middle-group .synth-check.flag .ck{color:#c64a3b}.middle-group .synth-reset{padding:.5rem 1rem;border:1px solid var(--middle-border);border-radius:4px;background:var(--middle-surface);color:var(--middle-text-2);font-family:inherit;font-size:.8rem;font-weight:500;cursor:pointer;transition:all .15s}.middle-group .synth-reset:hover{border-color:var(--middle-accent);color:var(--middle-accent)}.middle-footer{margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--middle-border);text-align:center;font-size:.8rem;color:var(--middle-text-3);line-height:1.8}.middle-footer strong{color:var(--middle-text-2);font-weight:600}@media(max-width:600px){.middle-group{padding:2rem 1.25rem 3rem}.middle-group h1{font-size:1.8rem}.middle-group .options-grid,.middle-group .synth-poles{grid-template-columns:1fr}.middle-group .hier-flag{display:none}}@media(prefers-reduced-motion:reduce){.middle-page-panel{animation:none!important}.middle-group .acc-icon{transition:none!important}}