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var(--transition-fast);font-size:.88rem}.sitemap-card ul li a:hover{color:var(--accent-cyan)}.navbar-spacer{height:70px}@media(max-width:768px){.navbar-spacer{height:60px}}.content-section{max-width:900px;margin:0 auto;padding:0 1.5rem 60px}.content-section__inner{width:100%}.content-card{background:var(--bg-card);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-color);border-radius:var(--border-radius-lg);transition:all var(--transition-base);padding:32px}.content-card:hover{border-color:var(--border-glow)}.content-card p{color:var(--text-secondary);margin-bottom:1.25rem;font-size:.95rem;line-height:1.75}.content-card p:last-child{margin-bottom:0}.content-card p strong{color:var(--text-primary)}.content-grid{gap:20px;margin:24px 0;display:grid}.content-grid--2{grid-template-columns:1fr 1fr}.content-highlight-card{background:var(--bg-glass);border:1px solid var(--border-color);border-radius:var(--border-radius-md);transition:all var(--transition-base);padding:24px;position:relative;overflow:hidden}.content-highlight-card:before{content:"";background:var(--gradient-primary);opacity:0;height:3px;transition:opacity var(--transition-fast);position:absolute;top:0;left:0;right:0}.content-highlight-card:hover{border-color:var(--border-glow);box-shadow:var(--shadow-glow);transform:translateY(-3px)}.content-highlight-card:hover:before{opacity:1}.content-highlight-card__icon{margin-bottom:12px;font-size:1.8rem}.content-highlight-card__title{color:var(--text-primary);margin-bottom:12px;font-size:1.05rem;font-weight:700}.content-list{margin:0;padding:0;list-style:none}.content-list li{color:var(--text-secondary);margin-bottom:8px;padding-left:18px;font-size:.88rem;line-height:1.5;position:relative}.content-list 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18px;display:flex}.formula-list__item:hover{border-color:var(--border-glow);background:var(--bg-glass-hover)}.formula-list__item code{font-family:var(--font-mono-dc);color:var(--accent-cyan);white-space:nowrap;font-size:.92rem;font-weight:600}.formula-list__item span{color:var(--text-muted);font-size:.85rem}.interactive-diagram{background:var(--bg-glass);border:1px solid var(--border-color);border-radius:var(--border-radius-lg);margin:28px 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#00d4ff26}.diagram-op{font-family:var(--font-mono-dc);color:var(--text-muted);font-size:1.4rem;font-weight:500}.diagram-beakers{justify-content:center;align-items:flex-end;gap:16px;padding:20px 0;display:flex}.beaker-group{transition:all var(--transition-base);border-radius:var(--border-radius-md);flex-direction:column;align-items:center;gap:12px;padding:16px;display:flex}.beaker-group.highlighted{background:#00d4ff0a;box-shadow:0 0 20px #00d4ff14}.beaker{width:80px;height:100px;position:relative}.beaker--large{width:110px;height:130px}.beaker-body{border:2.5px solid var(--text-muted);background:#0000001a;border-top:none;border-radius:0 0 12px 12px;width:100%;height:100%;position:relative;overflow:hidden}.beaker-base{background:var(--text-muted);border-radius:0 0 4px 4px;width:110%;height:6px;margin:0 auto;position:relative;left:-5%}.beaker--large .beaker-base{width:108%;left:-4%}.beaker-liquid{transition:all .6s 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#00d4ff33}.beaker-caption{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em;font-size:.82rem;font-weight:700}.beaker-transfer{flex-direction:column;align-self:center;align-items:center;gap:4px;margin-bottom:60px;display:flex}.transfer-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;font-size:.72rem;font-weight:600}.transfer-arrow{opacity:.8}.diagram-insight{border-radius:var(--border-radius-md);transition:all var(--transition-base);background:#00d4ff0a;border:1px solid #00d4ff1a;align-items:center;gap:10px;margin-top:20px;padding:14px 18px;display:flex}.diagram-insight.active{background:#00d4ff14;border-color:#00d4ff33}.diagram-insight__icon{flex-shrink:0;font-size:1.2rem}.diagram-insight__text{color:var(--text-secondary);transition:all 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0;display:flex;overflow-x:auto}.serial-chain::-webkit-scrollbar{display:none}.serial-tube{cursor:pointer;transition:all var(--transition-fast);border-radius:var(--border-radius-sm);flex-direction:column;align-items:center;gap:8px;padding:8px;display:flex}.serial-tube:hover,.serial-tube.active{background:#00d4ff0a;transform:translateY(-6px)}.serial-tube__vessel{border:2px solid var(--text-muted);width:44px;height:72px;transition:border-color var(--transition-fast);background:#00000014;border-radius:0 0 50% 50%;position:relative;overflow:hidden}.serial-tube:hover .serial-tube__vessel,.serial-tube.active .serial-tube__vessel{border-color:var(--accent-cyan)}.serial-tube__liquid{background:var(--accent-cyan);height:70%;opacity:var(--liquid-opacity,.5);transition:all var(--transition-base);border-radius:0 0 50% 50%;position:absolute;bottom:0;left:0;right:0}.serial-tube__label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;font-size:.7rem;font-weight:700}.serial-tube__conc{font-family:var(--font-mono-dc);color:var(--accent-cyan);font-size:.78rem;font-weight:600}.serial-tube__fold{color:var(--text-muted);background:var(--bg-glass);border:1px solid var(--border-color);border-radius:20px;padding:2px 8px;font-size:.68rem;font-weight:600}.serial-connector{flex-direction:column;align-self:center;align-items:center;gap:2px;margin-bottom:50px;display:flex}.serial-connector__line{background:var(--gradient-primary);opacity:.4;width:20px;height:2px}.serial-connector__arrow{color:var(--text-muted);font-size:1rem;font-weight:700;line-height:1}.serial-detail{border-radius:var(--border-radius-md);transition:all var(--transition-base);background:#7c3aed0a;border:1px solid #7c3aed1a;align-items:center;gap:10px;margin-top:16px;padding:14px 18px;display:flex}.serial-detail__icon{flex-shrink:0;font-size:1.2rem}.serial-detail__text{color:var(--text-secondary);font-size:.85rem;line-height:1.5}.example-walkthrough{border:1px solid var(--border-color);border-radius:var(--border-radius-lg);background:var(--bg-glass);margin:24px 0;overflow:hidden}.example-step{opacity:0;border-bottom:1px solid var(--border-color);max-height:0;padding:0;transition:max-height .5s ease-out,opacity .4s ease-out,padding .3s ease-out;overflow:hidden}.example-step.visible{opacity:1;max-height:300px;padding:20px 24px}.example-step__header{color:var(--text-primary);align-items:center;gap:12px;margin-bottom:12px;font-size:.92rem;font-weight:600;display:flex}.example-step__badge{background:var(--gradient-primary);color:#fff;text-transform:uppercase;letter-spacing:.04em;white-space:nowrap;border-radius:20px;padding:4px 12px;font-size:.72rem;font-weight:700}.example-step__body{padding-left:0}.example-vars{grid-template-columns:1fr 1fr;gap:10px;display:grid}.example-var{background:var(--bg-glass);border:1px solid var(--border-color);border-radius:var(--border-radius-sm);color:var(--text-secondary);padding:10px 14px;font-size:.88rem}.example-var__symbol{font-family:var(--font-mono-dc);color:var(--accent-cyan);margin-right:4px;font-weight:700}.example-var em{color:var(--text-muted);font-size:.78rem;font-style:normal}.example-var--unknown{border-color:var(--accent-purple);background:#7c3aed0f}.example-formula{font-family:var(--font-mono-dc);color:var(--accent-cyan);border-radius:var(--border-radius-sm);background:#00d4ff0a;border:1px solid #00d4ff1a;padding:14px 18px;font-size:1rem;display:block}.example-formula strong{color:var(--accent-green)}.example-controls{background:var(--bg-glass);justify-content:space-between;align-items:center;gap:12px;padding:16px 24px;display:flex}.example-nav-btn{white-space:nowrap;flex:0!important;padding:10px 20px!important;font-size:.82rem!important}.example-progress{color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;font-size:.78rem;font-weight:600}.example-recipe{border-radius:var(--border-radius-md);background:#10b9810d;border:1px solid #10b98126;align-items:flex-start;gap:14px;margin-top:24px;padding:20px;display:flex}.example-recipe__icon{flex-shrink:0;font-size:1.5rem}.example-recipe__content{color:var(--text-secondary);font-size:.88rem;line-height:1.6}.example-recipe__content strong{color:var(--accent-green)}@media(max-width:768px){.content-section{padding-left:1rem;padding-right:1rem}.content-card{padding:20px}.content-grid--2{grid-template-columns:1fr}.diagram-equation-row{flex-wrap:wrap;gap:6px}.diagram-var{padding:6px 12px;font-size:1.2rem}.diagram-beakers{flex-direction:column;align-items:center;gap:24px}.beaker-transfer{margin-bottom:0;transform:rotate(90deg)}.factor-buttons{gap:6px}.factor-btn{padding:8px 14px;font-size:.82rem}.factor-info{flex-wrap:wrap;gap:12px}.serial-chain{justify-content:flex-start;padding:20px 0}.serial-tube__vessel{width:36px;height:58px}.step-item{padding:14px}.example-vars{grid-template-columns:1fr}.example-controls{flex-direction:column;gap:10px}.example-nav-btn{width:100%!important}}@media(max-width:480px){.diagram-var{padding:5px 10px;font-size:1rem}.diagram-op{font-size:1rem}.beaker{width:60px;height:80px}.beaker--large{width:85px;height:105px}.serial-tube__vessel{width:30px;height:48px}.serial-tube__conc{font-size:.68rem}.serial-connector__line{width:12px}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-gradient-position{syntax:"*";inherits:false}@property --tw-gradient-from{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-via{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-to{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-stops{syntax:"*";inherits:false}@property --tw-gradient-via-stops{syntax:"*";inherits:false}@property --tw-gradient-from-position{syntax:"<length-percentage>";inherits:false;initial-value:0%}@property --tw-gradient-via-position{syntax:"<length-percentage>";inherits:false;initial-value:50%}@property --tw-gradient-to-position{syntax:"<length-percentage>";inherits:false;initial-value:100%}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-duration{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}