.pat-group{--pat-text: #1C1917;--pat-text-2: #57534E;--pat-text-3: #A8A29E;--pat-accent: #B8893E;--pat-accent-bg: #FAF4E8;--pat-cool: #6B5A36;--pat-cool-bg: #F5EFE0;--pat-border: #E7E5E4;--pat-bg: #FBFAF5;--pat-surface: #FFFFFF;font-family:Inter,-apple-system,system-ui,sans-serif;color:var(--pat-text);line-height:1.75;max-width:720px;margin:0 auto;padding:3rem 1.5rem 4rem;background:var(--pat-bg)}.pat-group *,.pat-group *:before,.pat-group *:after{box-sizing:border-box}.pat-header{margin-bottom:2.5rem}.pat-header-label{font-size:.75rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--pat-accent);margin-bottom:.75rem}.pat-group h1{font-size:2.4rem;font-weight:700;line-height:1.15;color:var(--pat-text);letter-spacing:-.02em;margin-bottom:.5rem}.pat-subtitle{font-size:1.05rem;color:var(--pat-text-2);font-weight:400}.pat-nav{display:flex;gap:.25rem;border-bottom:1px solid var(--pat-border);margin-bottom:2.5rem;overflow-x:auto;-webkit-overflow-scrolling:touch}.pat-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(--pat-text-3);cursor:pointer;white-space:nowrap;transition:color .15s,border-color .15s}.pat-nav button:hover{color:var(--pat-text-2)}.pat-nav button.active{color:var(--pat-accent);font-weight:600;border-bottom-color:var(--pat-accent)}.pat-page-panel{display:none}.pat-page-panel.active{display:block;animation:patAppear .25s ease}@keyframes patAppear{0%{opacity:0}to{opacity:1}}.pat-group .section-label{font-size:.7rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--pat-text-3);margin-bottom:.5rem}.pat-group .section-label.warm{color:var(--pat-accent)}.pat-group h2{font-size:1.35rem;font-weight:700;color:var(--pat-text);letter-spacing:-.01em;margin-bottom:.75rem}.pat-group h3{font-size:1.05rem;font-weight:600;color:var(--pat-text);margin-bottom:.5rem}.pat-group .body-text{font-size:.95rem;color:var(--pat-text-2);line-height:1.8}.pat-group .body-text+.body-text{margin-top:.75rem}.pat-group .body-text strong{color:var(--pat-text);font-weight:600}.pat-group .body-text em{font-style:italic}.pat-group .body-text a{color:var(--pat-accent)}.pat-group .timing{font-size:.75rem;font-weight:500;color:var(--pat-text-3);float:right;margin-top:.2rem}.pat-group .divider{border:none;border-top:1px solid var(--pat-border);margin:2.5rem 0}.pat-group .callout{border-left:3px solid var(--pat-border);padding:1rem 1.25rem;margin:1.5rem 0}.pat-group .callout.warm{border-left-color:var(--pat-accent);background:var(--pat-accent-bg)}.pat-group .callout.cool{border-left-color:var(--pat-cool);background:var(--pat-cool-bg)}.pat-group .callout .callout-label{font-size:.7rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--pat-text-3);margin-bottom:.4rem}.pat-group .callout.warm .callout-label{color:var(--pat-accent)}.pat-group .callout.cool .callout-label{color:var(--pat-cool)}.pat-group .callout p{font-size:.9rem;color:var(--pat-text-2);line-height:1.7}.pat-group .callout p strong{color:var(--pat-text)}.pat-group .callout p em{font-style:italic}.pat-group .callout a{color:var(--pat-accent)}.pat-group .steps{margin:1.5rem 0}.pat-group .step{display:flex;gap:1rem;align-items:baseline;padding:.75rem 0;border-bottom:1px solid var(--pat-border)}.pat-group .step:last-child{border-bottom:none}.pat-group .step-num{font-size:.8rem;font-weight:700;color:var(--pat-text-3);flex-shrink:0;width:1.5rem;text-align:right}.pat-group .step-content{flex:1}.pat-group .step-q{font-size:.95rem;font-weight:600;color:var(--pat-text)}.pat-group .step-hint{font-size:.82rem;color:var(--pat-text-3);margin-top:.15rem;line-height:1.6}.pat-group .accordion{margin:1.5rem 0;border:1px solid var(--pat-border);border-radius:8px;overflow:hidden}.pat-group .acc-item{border-bottom:1px solid var(--pat-border)}.pat-group .acc-item:last-child{border-bottom:none}.pat-group .acc-header{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.25rem;cursor:pointer;background:var(--pat-surface);transition:background .15s;user-select:none}.pat-group .acc-header:hover{background:var(--pat-bg)}.pat-group .acc-title{font-size:.95rem;font-weight:600;color:var(--pat-text)}.pat-group .acc-icon{font-size:1.1rem;color:var(--pat-text-3);transition:transform .2s;font-weight:300;line-height:1}.pat-group .acc-item.open .acc-icon{transform:rotate(45deg)}.pat-group .acc-body{display:none;padding:0 1.25rem 1.25rem;background:var(--pat-surface)}.pat-group .acc-item.open .acc-body{display:block}.pat-group .acc-body p{font-size:.9rem;color:var(--pat-text-2);line-height:1.75}.pat-group .acc-body p+p{margin-top:.75rem}.pat-group .acc-body p em{font-style:italic}.pat-group .acc-body .aside{margin-top:.75rem;font-size:.85rem;font-style:italic;color:var(--pat-text-3);padding-left:1rem;border-left:2px solid var(--pat-border)}.pat-group .letter-grid{display:grid;grid-template-columns:1fr;gap:.75rem;margin:1.5rem 0}.pat-group .letter-card{border:1px solid var(--pat-border);border-radius:8px;overflow:hidden;cursor:pointer;transition:border-color .15s}.pat-group .letter-card:hover,.pat-group .letter-card.active{border-color:var(--pat-accent)}.pat-group .letter-header{display:flex;align-items:center;gap:1rem;padding:1rem 1.25rem;background:var(--pat-surface)}.pat-group .letter-char{font-size:1.4rem;font-weight:700;color:var(--pat-accent);width:2rem;flex-shrink:0;text-align:center}.pat-group .letter-name{font-size:.95rem;font-weight:600;color:var(--pat-text)}.pat-group .letter-brief{font-size:.8rem;color:var(--pat-text-3);margin-top:.1rem}.pat-group .letter-detail{display:none;padding:1.25rem;background:var(--pat-bg);border-top:1px solid var(--pat-border)}.pat-group .letter-card.active .letter-detail{display:block}.pat-group .letter-detail p{font-size:.9rem;color:var(--pat-text-2);line-height:1.75}.pat-group .letter-detail p+p{margin-top:.75rem}.pat-group .letter-detail p strong{color:var(--pat-text)}.pat-group .letter-detail p em{font-style:italic}.pat-group .letter-detail .aside{margin-top:.75rem;font-size:.85rem;font-style:italic;color:var(--pat-text-3);padding-left:1rem;border-left:2px solid var(--pat-border)}.pat-group .scenario-stack{margin:1.5rem 0}.pat-group .scenario-card{border:1px solid var(--pat-border);border-radius:8px;overflow:hidden;margin-bottom:.75rem}.pat-group .scenario-body{padding:1.5rem 1.5rem 1.25rem;background:var(--pat-surface)}.pat-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}.pat-group .scenario-tag.warm-tag{color:var(--pat-accent);background:var(--pat-accent-bg)}.pat-group .scenario-tag.cool-tag{color:var(--pat-cool);background:var(--pat-cool-bg)}.pat-group .scenario-text{font-size:.95rem;color:var(--pat-text);line-height:1.8}.pat-group .scenario-reveal{display:none;padding:1.25rem;border-top:1px solid var(--pat-border);background:var(--pat-bg)}.pat-group .scenario-reveal.show{display:block}.pat-group .scenario-reveal p{font-size:.9rem;color:var(--pat-text-2);line-height:1.75}.pat-group .scenario-reveal p+p{margin-top:.75rem}.pat-group .scenario-reveal p strong{color:var(--pat-text)}.pat-group .scenario-reveal p em{font-style:italic}.pat-group .reveal-btn-row{border-top:1px solid var(--pat-border);text-align:center}.pat-group .reveal-btn{width:100%;padding:.9rem;border:none;font-family:inherit;font-size:.85rem;font-weight:600;cursor:pointer;background:var(--pat-surface);color:var(--pat-text-3);transition:background .15s,color .15s}.pat-group .reveal-btn:hover{background:var(--pat-bg);color:var(--pat-text-2)}.pat-group .reveal-btn.revealed{color:var(--pat-accent);background:var(--pat-accent-bg);cursor:default}.pat-group .questions{margin:1.5rem 0}.pat-group .question{padding:1rem 0;border-bottom:1px solid var(--pat-border)}.pat-group .question:last-child{border-bottom:none}.pat-group .question-label{font-size:.7rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--pat-text-3);margin-bottom:.3rem}.pat-group .question-text{font-size:.95rem;font-weight:500;color:var(--pat-text);line-height:1.7}.pat-group .question-note{font-size:.82rem;font-style:italic;color:var(--pat-text-3);margin-top:.3rem}.pat-group .options-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--pat-border);border:1px solid var(--pat-border);border-radius:8px;overflow:hidden;margin:1.5rem 0}.pat-group .option{background:var(--pat-surface);padding:1.25rem;cursor:pointer;transition:background .15s}.pat-group .option:hover{background:var(--pat-bg)}.pat-group .option.selected{background:var(--pat-accent-bg)}.pat-group .option-label{font-size:.9rem;font-weight:600;color:var(--pat-text);margin-bottom:.2rem}.pat-group .option-desc{font-size:.8rem;color:var(--pat-text-3);line-height:1.5}.pat-group .page-nav{display:flex;justify-content:space-between;align-items:center;margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--pat-border)}.pat-group .page-nav button{background:none;border:none;font-family:inherit;font-size:.9rem;font-weight:500;color:var(--pat-accent);cursor:pointer;padding:.5rem 0;transition:opacity .15s}.pat-group .page-nav button:hover{opacity:.7}.pat-group .page-nav .ghost{visibility:hidden}.pat-footer{margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--pat-border);text-align:center;font-size:.8rem;color:var(--pat-text-3);line-height:1.8}.pat-footer strong{color:var(--pat-text-2);font-weight:600}.pat-footer a{color:var(--pat-accent)}@media(max-width:600px){.pat-group{padding:2rem 1.25rem 3rem}.pat-group h1{font-size:1.8rem}.pat-group .options-grid{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){.pat-page-panel{animation:none!important}.pat-group .acc-icon{transition:none!important}}