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0;padding:16px}.guide-section-title{text-transform:uppercase;letter-spacing:.9px;color:var(--ms-blue);margin-bottom:12px;font-size:.68rem;font-weight:700}.overview-text{color:var(--text-secondary);font-size:.9rem;line-height:1.65}.prereq-list{flex-direction:column;gap:6px;display:flex}.prereq-list li{color:var(--text-secondary);padding-left:16px;font-size:.87rem;line-height:1.5;position:relative}.prereq-list li:before{content:"•";color:var(--ms-blue);font-weight:700;position:absolute;left:0}.accordion-item{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);transition:border-color var(--ease), background var(--ease);margin-bottom:6px;overflow:hidden}.accordion-item:last-child{margin-bottom:0}.accordion-header{cursor:pointer;text-align:left;width:100%;transition:background var(--ease);background:0 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0;font-size:.6rem;font-weight:500;display:flex}.nav-tab.active{color:var(--ms-blue)}.nav-icon{font-size:1.35rem;line-height:1}.about-hero{background:var(--surface);text-align:center;border-bottom:1px solid var(--border);padding:36px 20px 28px}.about-app-icon{margin-bottom:12px;font-size:3.5rem;line-height:1}.about-title{color:var(--text-primary);margin-bottom:4px;font-size:1.1rem;font-weight:700}.about-tagline{color:var(--text-tertiary);max-width:280px;margin:0 auto 8px;font-size:.82rem;line-height:1.5}.about-version{color:var(--text-tertiary);background:var(--surface-3);border:1px solid var(--border);border-radius:10px;padding:2px 10px;font-size:.72rem;display:inline-block}.coverage-grid{grid-template-columns:repeat(3,1fr);gap:8px;padding:0 16px;display:grid}.coverage-item{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);text-align:center;color:var(--text-secondary);transition:background var(--ease);padding:12px 8px;font-size:.72rem;line-height:1.4}.coverage-item-icon{margin-bottom:4px;font-size:1.3rem;display:block}.promo-card{background:var(--surface);border-radius:var(--radius-md);border:1px solid var(--border);transition:background var(--ease);margin:0 16px 10px;padding:16px}.promo-card-name{color:var(--text-primary);margin-bottom:3px;font-size:.92rem;font-weight:700}.promo-card-desc{color:var(--text-secondary);margin-bottom:12px;font-size:.8rem;line-height:1.4}.promo-btn{text-align:center;background:var(--ms-blue);color:#fff;border-radius:var(--radius);transition:background var(--ease);padding:9px 16px;font-size:.82rem;font-weight:600;text-decoration:none;display:block}.promo-btn:active{background:var(--ms-blue-dark)}.about-footer{text-align:center;color:var(--text-tertiary);padding:20px 16px;font-size:.75rem;line-height:1.6}.theme-toggle{background:var(--surface-3);border:1px solid var(--border);cursor:pointer;width:36px;height:36px;transition:background var(--ease), border-color var(--ease), transform var(--ease);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:1rem;display:flex}.theme-toggle:active{transform:scale(.9)}.divider{background:var(--border);height:1px;margin:0 16px}.spacer-sm{height:8px}.spacer-md{height:16px}strong{font-weight:700}.about-logo{margin-bottom:12px;font-size:3.5rem;line-height:1}.about-app-name{color:var(--text-primary);margin-bottom:4px;font-size:1.1rem;font-weight:700}.about-card{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border);margin:8px 0 0;padding:16px}.about-card-title{text-transform:uppercase;letter-spacing:.9px;color:var(--ms-blue);margin-bottom:12px;font-size:.68rem;font-weight:700}.nav-tab-icon{font-size:1.35rem;line-height:1;display:block}@media (orientation:landscape) and (height<=500px){.nav-tab{min-height:44px;padding:5px 0;font-size:.55rem}.nav-tab-icon,.nav-icon{font-size:1.1rem}.page{padding-bottom:16px}.page-header .header-row{height:46px}}@media (width<=360px){.categories-grid{gap:8px;padding:0 12px}.coverage-grid{grid-template-columns:repeat(2,1fr)}.guide-detail-title{font-size:1.05rem}.category-name-large{font-size:1.1rem}.header-row{padding:0 12px}.guides-list{padding-left:12px;padding-right:12px}.guide-section{padding:14px 12px}.accordion-body{padding-left:40px}}