.eft-group{--eft-text: #1C1917;--eft-text-2: #57534E;--eft-text-3: #A8A29E;--eft-accent: #5C2E36;--eft-accent-bg: #F5ECEE;--eft-cool: #6B8E7F;--eft-cool-bg: #EEF3F0;--eft-border: #E7E5E4;--eft-bg: #FAFAF7;--eft-surface: #FFFFFF;font-family:Inter,-apple-system,system-ui,sans-serif;color:var(--eft-text);line-height:1.75;max-width:720px;margin:0 auto;padding:3rem 1.5rem 4rem;background:var(--eft-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.eft-group *,.eft-group *:before,.eft-group *:after{box-sizing:border-box}.eft-header{margin-bottom:2.5rem}.eft-header-label{font-size:.75rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--eft-accent);margin-bottom:.75rem}.eft-group h1{font-size:2.4rem;font-weight:700;line-height:1.15;color:var(--eft-text);letter-spacing:-.02em;margin-bottom:.5rem}.eft-subtitle{font-size:1.05rem;color:var(--eft-text-2);font-weight:400}.eft-essence-link{margin-top:1rem;font-size:.85rem}.eft-essence-link a{color:var(--eft-accent);text-decoration:none;font-weight:600;letter-spacing:.02em}.eft-essence-link a:hover{opacity:.7}.eft-nav{display:flex;gap:.25rem;border-bottom:1px solid var(--eft-border);margin-bottom:2.5rem;overflow-x:auto;-webkit-overflow-scrolling:touch}.eft-nav button{background:none;border:none;border-bottom:2px solid transparent;padding:.75rem 1rem;font-family:inherit;font-size:.875rem;font-weight:500;color:var(--eft-text-3);cursor:pointer;white-space:nowrap;transition:color .15s,border-color .15s}.eft-nav button:hover{color:var(--eft-text-2)}.eft-nav button.active{color:var(--eft-accent);font-weight:600;border-bottom-color:var(--eft-accent)}.eft-page-panel{display:none}.eft-page-panel.active{display:block;animation:eftAppear .25s ease}@keyframes eftAppear{0%{opacity:0}to{opacity:1}}.eft-group .section-label{font-size:.7rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--eft-text-3);margin-bottom:.5rem}.eft-group .section-label.warm{color:var(--eft-accent)}.eft-group .section-label.cool{color:var(--eft-cool)}.eft-group h2{font-size:1.35rem;font-weight:700;color:var(--eft-text);letter-spacing:-.01em;margin-bottom:.75rem}.eft-group h3{font-size:1.05rem;font-weight:600;color:var(--eft-text);margin-bottom:.5rem}.eft-group .body-text{font-size:.95rem;color:var(--eft-text-2);line-height:1.8}.eft-group .body-text+.body-text{margin-top:.75rem}.eft-group .body-text strong{color:var(--eft-text);font-weight:600}.eft-group .timing{font-size:.75rem;font-weight:500;color:var(--eft-text-3);float:right;margin-top:.2rem}.eft-group .divider{border:none;border-top:1px solid var(--eft-border);margin:2.5rem 0}.eft-group .callout{border-left:3px solid var(--eft-border);padding:1rem 1.25rem;margin:1.5rem 0}.eft-group .callout.warm{border-left-color:var(--eft-accent);background:var(--eft-accent-bg)}.eft-group .callout.cool{border-left-color:var(--eft-cool);background:var(--eft-cool-bg)}.eft-group .callout .callout-label{font-size:.7rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--eft-text-3);margin-bottom:.4rem}.eft-group .callout.warm .callout-label{color:var(--eft-accent)}.eft-group .callout.cool .callout-label{color:var(--eft-cool)}.eft-group .callout p{font-size:.9rem;color:var(--eft-text-2);line-height:1.7}.eft-group .callout p strong{color:var(--eft-text)}.eft-group .steps{margin:1.5rem 0}.eft-group .step{display:flex;gap:1rem;align-items:baseline;padding:.75rem 0;border-bottom:1px solid var(--eft-border)}.eft-group .step:last-child{border-bottom:none}.eft-group .step-num{font-size:.8rem;font-weight:700;color:var(--eft-text-3);flex-shrink:0;width:1.5rem;text-align:right}.eft-group .step-content{flex:1}.eft-group .step-q{font-size:.95rem;font-weight:600;color:var(--eft-text)}.eft-group .step-hint{font-size:.82rem;color:var(--eft-text-3);margin-top:.15rem;line-height:1.6}.eft-group .accordion{margin:1.5rem 0;border:1px solid var(--eft-border);border-radius:8px;overflow:hidden}.eft-group .acc-item{border-bottom:1px solid var(--eft-border)}.eft-group .acc-item:last-child{border-bottom:none}.eft-group .acc-header{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.25rem;cursor:pointer;background:var(--eft-surface);transition:background .15s;user-select:none}.eft-group .acc-header:hover{background:var(--eft-bg)}.eft-group .acc-title{font-size:.95rem;font-weight:600;color:var(--eft-text)}.eft-group .acc-icon{font-size:1.1rem;color:var(--eft-text-3);transition:transform .2s;font-weight:300;line-height:1}.eft-group .acc-item.open .acc-icon{transform:rotate(45deg)}.eft-group .acc-body{display:none;padding:0 1.25rem 1.25rem;background:var(--eft-surface)}.eft-group .acc-item.open .acc-body{display:block}.eft-group .acc-body p{font-size:.9rem;color:var(--eft-text-2);line-height:1.75}.eft-group .acc-body p+p{margin-top:.75rem}.eft-group .acc-body .aside{margin-top:.75rem;font-size:.85rem;font-style:italic;color:var(--eft-text-3);padding-left:1rem;border-left:2px solid var(--eft-border)}.eft-group .letter-grid{display:grid;grid-template-columns:1fr;gap:.75rem;margin:1.5rem 0}.eft-group .letter-card{border:1px solid var(--eft-border);border-radius:8px;overflow:hidden;cursor:pointer;transition:border-color .15s}.eft-group .letter-card:hover,.eft-group .letter-card.active{border-color:var(--eft-accent)}.eft-group .letter-header{display:flex;align-items:center;gap:1rem;padding:1rem 1.25rem;background:var(--eft-surface)}.eft-group .letter-char{font-size:1.4rem;font-weight:700;color:var(--eft-accent);width:2rem;flex-shrink:0;text-align:center}.eft-group .letter-card.cool-card .letter-char{color:var(--eft-cool)}.eft-group .letter-name{font-size:.95rem;font-weight:600;color:var(--eft-text)}.eft-group .letter-brief{font-size:.8rem;color:var(--eft-text-3);margin-top:.1rem}.eft-group .letter-detail{display:none;padding:1.25rem;background:var(--eft-bg);border-top:1px solid var(--eft-border)}.eft-group .letter-card.active .letter-detail{display:block}.eft-group .letter-detail p{font-size:.9rem;color:var(--eft-text-2);line-height:1.75}.eft-group .letter-detail .aside{margin-top:.75rem;font-size:.85rem;font-style:italic;color:var(--eft-text-3);padding-left:1rem;border-left:2px solid var(--eft-border)}.eft-group .scenario-stack{margin:1.5rem 0}.eft-group .scenario-card{border:1px solid var(--eft-border);border-radius:8px;overflow:hidden;margin-bottom:.75rem}.eft-group .scenario-body{padding:1.5rem 1.5rem 1.25rem;background:var(--eft-surface)}.eft-group .scenario-tag{display:inline-block;font-size:.65rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;padding:.2rem .5rem;border-radius:3px;margin-bottom:.75rem}.eft-group .scenario-tag.warm{color:var(--eft-accent);background:var(--eft-accent-bg)}.eft-group .scenario-tag.cool{color:var(--eft-cool);background:var(--eft-cool-bg)}.eft-group .scenario-text{font-size:.95rem;color:var(--eft-text);line-height:1.8}.eft-group .scenario-reveal{display:none;padding:1.25rem;border-top:1px solid var(--eft-border);background:var(--eft-bg)}.eft-group .scenario-reveal.show{display:block}.eft-group .scenario-reveal p{font-size:.9rem;color:var(--eft-text-2);line-height:1.75}.eft-group .scenario-reveal p+p{margin-top:.75rem}.eft-group .scenario-reveal p strong{color:var(--eft-text)}.eft-group .reveal-btn-row{border-top:1px solid var(--eft-border);text-align:center}.eft-group .reveal-btn{width:100%;padding:.9rem;border:none;font-family:inherit;font-size:.85rem;font-weight:600;cursor:pointer;background:var(--eft-surface);color:var(--eft-text-3);transition:background .15s,color .15s}.eft-group .reveal-btn:hover{background:var(--eft-bg);color:var(--eft-text-2)}.eft-group .reveal-btn.revealed{color:var(--eft-accent);background:var(--eft-accent-bg);cursor:default}.eft-group .questions{margin:1.5rem 0}.eft-group .question{padding:1rem 0;border-bottom:1px solid var(--eft-border)}.eft-group .question:last-child{border-bottom:none}.eft-group .question-label{font-size:.7rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--eft-text-3);margin-bottom:.3rem}.eft-group .question-text{font-size:.95rem;font-weight:500;color:var(--eft-text);line-height:1.7}.eft-group .question-note{font-size:.82rem;font-style:italic;color:var(--eft-text-3);margin-top:.3rem}.eft-group .options-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--eft-border);border:1px solid var(--eft-border);border-radius:8px;overflow:hidden;margin:1.5rem 0}.eft-group .option{background:var(--eft-surface);padding:1.25rem;cursor:pointer;transition:background .15s}.eft-group .option:hover{background:var(--eft-bg)}.eft-group .option.selected{background:var(--eft-accent-bg)}.eft-group .option-label{font-size:.9rem;font-weight:600;color:var(--eft-text);margin-bottom:.2rem}.eft-group .option-desc{font-size:.8rem;color:var(--eft-text-3);line-height:1.5}.eft-group .page-nav{display:flex;justify-content:space-between;align-items:center;margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--eft-border)}.eft-group .page-nav button{background:none;border:none;font-family:inherit;font-size:.9rem;font-weight:500;color:var(--eft-accent);cursor:pointer;padding:.5rem 0;transition:opacity .15s}.eft-group .page-nav button:hover{opacity:.7}.eft-group .page-nav .ghost{visibility:hidden}.eft-footer{margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--eft-border);text-align:center;font-size:.8rem;color:var(--eft-text-3);line-height:1.8}.eft-footer strong{color:var(--eft-text-2);font-weight:600}@media(max-width:600px){.eft-group{padding:2rem 1.25rem 3rem}.eft-group h1{font-size:1.8rem}.eft-group .options-grid{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){.eft-page-panel{animation:none!important}.eft-group .acc-icon{transition:none!important}}