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.act-btn2{color:var(--calc-text-muted,#a8b8cc);background:#0000000a;border-color:#0000001a}[data-theme=light] .act-btn2:hover{color:var(--calc-gold,#fbbf24);background:#b4530914;border-color:#b4530959}[data-theme=light] .ob-card{box-shadow:var(--calc-shadow-card,0 4px 20px #0000004d, 0 1px 4px #0003)}@media (width<=768px){.ob-grid{gap:var(--calc-space-4);grid-template-columns:1fr}}.edu-canvas .calc-section{background:radial-gradient(circle at top left, rgba(var(--section-accent-rgb), .05), transparent 60%), linear-gradient(135deg, #ffffff05 0%, transparent 40%), var(--calc-bg-card,#0d0d1f);border:1px solid var(--calc-border-default,#ffffff14);box-shadow:var(--calc-shadow-card,0 4px 20px #0000004d);transition:box-shadow var(--calc-transition,.2s) ease, transform var(--calc-transition,.2s) ease, border-color var(--calc-transition,.2s) ease;border-radius:18px;margin-bottom:0;padding:24px 26px;position:relative;overflow:hidden}@media (hover:hover){.edu-canvas .calc-section:hover{border-color:rgba(var(--section-accent-rgb,#ffffff1a), .22);box-shadow:var(--calc-shadow-card-hover,0 8px 32px #00000073), 0 0 0 1px rgba(var(--section-accent-rgb), .08)}}.edu-canvas .calc-section+.calc-section{margin-top:0}.edu-canvas .calc-section__header{border-bottom:1px solid var(--calc-border-subtle,#ffffff0f);align-items:flex-start;gap:16px;margin-bottom:24px;padding-bottom:20px;display:flex}.edu-canvas .calc-section__header>div:last-child{flex-direction:column;flex:1;gap:4px;min-width:0;display:flex}.edu-canvas .calc-section__header>h2.calc-section__title{margin:0}.edu-canvas .calc-section__eyebrow{letter-spacing:.1em;text-transform:uppercase;color:var(--section-accent,#f8fafc);margin-bottom:2px;font-size:.72rem;font-weight:600;display:block}.edu-canvas .calc-section__title{letter-spacing:-.01em;background:linear-gradient(135deg, var(--calc-gradient-heading-from,#fff), var(--calc-gradient-heading-to,#e2e8f0));-webkit-text-fill-color:transparent;color:#0000;-webkit-background-clip:text;background-clip:text;margin:0;font-size:1.4rem;font-weight:700;line-height:1.2}.edu-canvas .calc-section__icon{background:rgba(var(--section-accent-rgb,#050510), .14);width:56px;min-width:56px;height:56px;color:var(--section-accent,#f8fafc);border:1px solid rgba(var(--section-accent-rgb,#ffffff1a), .3);box-shadow:inset 0 0 16px rgba(var(--section-accent-rgb), .1), 0 2px 8px rgba(var(--section-accent-rgb), .08);border-radius:16px;justify-content:center;align-items:center;font-size:1.55rem;line-height:1;display:flex}.edu-canvas .howto-timeline{flex-direction:column;gap:6px;display:flex}.edu-canvas .howto-step{border-radius:var(--calc-radius-sm-alt);border:1px solid var(--calc-border-subtle,#ffffff0f);transition:border-color var(--calc-transition-fast,.15s) ease, background var(--calc-transition-fast,.15s) ease, transform var(--calc-transition-fast,.15s) 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.glossary-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px;display:grid}.edu-canvas .glossary-chip{isolation:isolate;border:1px solid var(--calc-border-subtle,#ffffff0f);transition:border-color var(--calc-transition-fast,.15s) ease, transform var(--calc-transition-fast,.15s) ease;background:#ffffff05;border-radius:14px;padding:16px 18px;position:relative}@media (hover:hover){.edu-canvas .glossary-chip:hover{border-color:rgba(var(--section-accent-rgb,#ffffff1a), .3);transform:translateY(-1px)}}.edu-canvas .glossary-chip__term{color:var(--section-accent,#f8fafc);letter-spacing:.01em;margin-bottom:6px;font-size:.88rem;font-weight:600;display:block}.edu-canvas .glossary-chip__def{color:var(--calc-text-faded,#88a);font-size:.88rem;line-height:1.55;display:block}.edu-canvas .examples-tabs{border:1px solid var(--calc-border-subtle,#ffffff0f);border-radius:var(--calc-radius-sm-alt);background:#ffffff0a;flex-wrap:wrap;gap:2px;max-width:100%;margin:0 0 20px;padding:4px;display:inline-flex}.edu-canvas .examples-tab{border-radius:var(--calc-radius-xs);color:var(--calc-text-faded,#88a);cursor:pointer;white-space:normal;transition:background var(--calc-transition-fast,.15s) ease, color var(--calc-transition-fast,.15s) ease, box-shadow var(--calc-transition-fast,.15s) ease;background:0 0;border:none;padding:7px 14px;font-size:.85rem;font-weight:500}@media (hover:hover){.edu-canvas .examples-tab:hover:not(.active){color:var(--calc-text-primary,#f8fafc)}}.edu-canvas .examples-tab.active{color:var(--section-accent,#f8fafc);box-shadow:0 1px 2px #00000040, inset 0 0 0 1px rgba(var(--section-accent-rgb), .25);background:#ffffff14;font-weight:600}.edu-canvas .examples-tab:focus-visible{outline:2px solid var(--section-accent,none);outline-offset:3px;border-radius:var(--calc-radius-xs)}.edu-canvas #examples .example-card-v2[data-example]{display:none}.edu-canvas #examples .example-card-v2[data-example-active="1"],.edu-canvas #examples 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.08);transform:translateY(-1px)}}.example-card-v2__head{align-items:center;gap:14px;margin-bottom:14px;display:flex}.example-card-v2__avatar{background:rgba(var(--section-accent-rgb,#050510), .16);width:44px;min-width:44px;height:44px;color:var(--section-accent,#f8fafc);border:1px solid rgba(var(--section-accent-rgb,#ffffff1a), .3);border-radius:50%;justify-content:center;align-items:center;font-size:1.2rem;display:flex}.example-card-v2__persona{flex:1;min-width:0}.example-card-v2__persona h3{color:var(--calc-text-primary,#f8fafc);margin:0 0 2px;font-size:1rem;font-weight:600}.example-card-v2__persona p{color:var(--calc-text-muted,#64748b);margin:0;font-size:.82rem}.example-card-v2__label{text-transform:uppercase;letter-spacing:.08em;color:var(--section-accent,#f8fafc);margin-bottom:8px;font-size:.78rem;font-weight:600;display:block}.example-card-v2__hero{text-align:center;border-top:1px solid var(--calc-border-subtle,#ffffff0f);border-bottom:1px solid var(--calc-border-subtle,#ffffff0f);background:#ffffff03;margin:14px 0 18px;padding:20px 0}.example-card-v2__hero-label{text-transform:uppercase;letter-spacing:.12em;color:var(--calc-text-muted,#64748b);margin-bottom:6px;font-size:.7rem;font-weight:600}.example-card-v2__hero-value{font-family:var(--calc-font-mono,"JetBrains Mono", monospace);letter-spacing:-.02em;background:linear-gradient(135deg, var(--calc-cyan,#22d3ee), var(--calc-purple,#a855f7));-webkit-text-fill-color:transparent;color:#0000;-webkit-background-clip:text;background-clip:text;font-size:2.4rem;font-weight:700;line-height:1.1}.example-card-v2__inputs{flex-wrap:wrap;gap:10px;margin-bottom:16px;display:flex}.example-card-v2__input-chip{color:var(--calc-text-faded,#88a);border:1px solid var(--calc-border-subtle,#ffffff0f);transition:border-color var(--calc-transition-fast,.15s) ease;background:#ffffff0a;border-radius:999px;padding:7px 13px;font-size:.84rem;box-shadow:inset 0 0 0 1px #ffffff05}.example-card-v2__input-chip em{color:var(--calc-text-muted,#64748b);text-transform:uppercase;letter-spacing:.05em;margin-right:6px;font-size:.78rem;font-style:normal;font-weight:600}.example-card-v2__interp{color:var(--calc-text-faded,#88a);margin:0;font-size:.92rem;line-height:1.7}.edu-canvas .formula-layout{grid-template-columns:1fr;gap:18px;display:grid}.edu-canvas .formula-layout:has(.formula-card-v2:only-child){grid-template-columns:minmax(0,720px);justify-content:center}@media (width>=720px){.edu-canvas .formula-layout:has(.formula-card-v2:nth-child(2):last-child){grid-template-columns:1fr 1fr}}@media (width>=1080px){.edu-canvas .formula-layout:has(.formula-card-v2:nth-child(3):last-child){grid-template-columns:1fr 1fr 1fr}}.edu-canvas .formula-card-v2{border:1px solid var(--calc-border-subtle,#ffffff0f);min-width:0;transition:border-color var(--calc-transition-fast,.15s) ease, transform var(--calc-transition-fast,.15s) ease;background:#ffffff05;border-radius:16px;padding:20px 22px;position:relative}@media (hover:hover){.edu-canvas .formula-card-v2:hover{border-color:rgba(var(--section-accent-rgb,#ffffff1a), .25);transform:translateY(-1px)}}.formula-card-v2__label{text-transform:uppercase;letter-spacing:.1em;color:var(--section-accent,#f8fafc);background:rgba(var(--section-accent-rgb,#050510), .12);border:1px solid rgba(var(--section-accent-rgb,#ffffff1a), .3);border-radius:6px;margin-bottom:12px;padding:4px 10px;font-size:.74rem;font-weight:600;display:inline-block}.formula-card-v2__equation{font-family:var(--calc-font-mono,"JetBrains Mono", monospace);color:var(--calc-text-primary,#f8fafc);white-space:normal;overflow-wrap:break-word;background:linear-gradient(rgba(var(--section-accent-rgb), .04), rgba(var(--section-accent-rgb), .01)), #00000040;border:1px solid rgba(var(--section-accent-rgb,#ffffff1a), .15);border-radius:10px;margin:0;padding:16px 18px;font-size:1.05rem;line-height:1.65;display:block;box-shadow:inset 0 1px 3px #0000004d}.formula-card-v2__description{color:var(--calc-text-faded,#88a);margin:12px 0 0;font-size:.9rem;line-height:1.65}.formula-card-v2__derivation{border-top:1px solid var(--calc-border-subtle,#ffffff0f);margin-top:14px;padding-top:12px}.formula-card-v2__derivation>summary{cursor:pointer;color:var(--section-accent,#f8fafc);align-items:center;gap:6px;font-size:.85rem;font-weight:600;list-style:none;display:inline-flex}.formula-card-v2__derivation>summary::-webkit-details-marker{display:none}.formula-card-v2__derivation>summary:before{content:"▸";font-size:.7rem;transition:transform .2s}.formula-card-v2__derivation[open]>summary:before{transform:rotate(90deg)}.formula-card-v2__derivation[open]>summary{margin-bottom:10px}.formula-card-v2__derivation-body{color:var(--calc-text-faded,#88a);font-size:.88rem;line-height:1.65}.edu-canvas .faq-toolbar{z-index:5;background:color-mix(in oklab, var(--calc-bg-card,#0d0d1f) 85%, transparent);border-bottom:1px solid var(--calc-border-subtle,#ffffff0f);-webkit-backdrop-filter:blur(12px)saturate(1.15);margin:0 0 16px;padding:12px 0;position:sticky;top:80px}@supports not (background:color-mix(in oklab, black, white)){.edu-canvas .faq-toolbar{background:var(--calc-bg-card,#0d0d1f)}}.edu-canvas .faq-toolbar .faq-search{margin:0;position:relative}.edu-canvas .faq-toolbar .faq-search:before{content:"";width:16px;height:16px;color:var(--calc-text-faded,#88a);pointer-events:none;background:currentColor;position:absolute;top:50%;left:16px;transform:translateY(calc(2px - 50%));-webkit-mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><circle cx='11' cy='11' r='8'/><line x1='21' y1='21' x2='16.65' y2='16.65'/></svg>") 50%/contain no-repeat;mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><circle cx='11' cy='11' r='8'/><line x1='21' y1='21' x2='16.65' y2='16.65'/></svg>") 50%/contain no-repeat}.edu-canvas .faq-toolbar .faq-search__input{box-sizing:border-box;border:1px solid var(--calc-border-default,#ffffff14);width:100%;color:var(--calc-text-primary,#f8fafc);transition:border-color var(--calc-transition-fast,.15s) ease, box-shadow var(--calc-transition-fast,.15s) ease;background:#ffffff08;border-radius:10px;padding:10px 14px 10px 44px;font-size:.92rem}.edu-canvas .faq-toolbar .faq-search__input:focus{border-color:rgba(var(--section-accent-rgb,#ffffff1a), .55);box-shadow:0 0 0 3px rgba(var(--section-accent-rgb,none), .18);outline:none}.edu-canvas .faq-tag-chips{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.edu-canvas .faq-tag-chip{color:var(--calc-text-faded,#88a);border:1px solid var(--calc-border-subtle,#ffffff0f);cursor:pointer;user-select:none;background:#ffffff0a;border-radius:999px;padding:5px 12px;font-size:.8rem;font-weight:500;transition:background .15s,color .15s,border-color .15s}@media (hover:hover){.edu-canvas .faq-tag-chip:hover{color:var(--section-accent,#f8fafc);border-color:rgba(var(--section-accent-rgb,#ffffff1a), .4)}}.edu-canvas .faq-tag-chip.active{background:var(--section-accent,#050510);color:var(--calc-bg-page,#050510);border-color:var(--section-accent,#ffffff1a);box-shadow:0 2px 8px rgba(var(--section-accent-rgb,none), .25)}.edu-canvas .faq-grid{border:1px solid var(--calc-border-default,#ffffff14);background:var(--calc-bg-card,#0d0d1f);box-shadow:var(--calc-shadow-card,0 1px 3px #00000026);border-radius:14px;flex-direction:column;gap:0;display:flex;overflow:hidden}.edu-canvas .faq-item-enhanced{border:none;border-top:1px solid var(--calc-border-subtle,#ffffff0f);transition:background var(--calc-transition-fast,.15s) ease;background:0 0;border-radius:0;margin-bottom:0;overflow:hidden}.edu-canvas .faq-item-enhanced:first-child{border-top:none}.edu-canvas .faq-item-enhanced[open]{background:rgba(var(--section-accent-rgb,#050510), .05)}.edu-canvas .faq-item-enhanced>summary{cursor:pointer;color:var(--calc-text-primary,#f8fafc);transition:color var(--calc-transition-fast,.15s) ease, font-weight var(--calc-transition-fast,.15s) ease;justify-content:space-between;align-items:center;gap:12px;padding:14px 16px;font-size:.93rem;font-weight:500;list-style:none;display:flex}.edu-canvas .faq-item-enhanced[open]>summary{color:var(--section-accent,#f8fafc);background:0 0;font-weight:600}.edu-canvas .faq-item-enhanced>summary:hover{background:0 0}.edu-canvas .faq-item-enhanced>summary::-webkit-details-marker{display:none}@media (hover:hover){.edu-canvas .faq-item-enhanced>summary:hover{color:var(--section-accent,#f8fafc)}}.edu-canvas .faq-item-enhanced .faq-toggle{font-family:var(--calc-font-mono,"JetBrains Mono", monospace);color:var(--calc-text-muted,#64748b);flex-shrink:0;font-size:1.3rem;line-height:1;transition:transform .2s,color .2s}.edu-canvas .faq-item-enhanced[open] .faq-toggle{color:var(--section-accent,#f8fafc);transform:rotate(45deg)}.edu-canvas .faq-answer{color:var(--calc-text-secondary,#b8b8cc);border-top:none;padding:2px 16px 16px;font-size:.9rem;line-height:1.65}.edu-canvas .faq-answer p{margin:0 0 8px}.edu-canvas .faq-answer p:last-child{margin-bottom:0}@media (hover:hover) and (prefers-reduced-motion:no-preference){.edu-canvas .formula-card-v2,.edu-canvas .glossary-chip,.edu-canvas .calc-related__grid>a,.edu-canvas .calc-related__grid>.calc-related__card,.edu-canvas .calc-related-guides__grid>a,.edu-canvas .calc-related-guides__grid>.calc-related-guides__card{transition:transform .18s,box-shadow .18s,border-color .18s}.edu-canvas .formula-card-v2:hover,.edu-canvas .glossary-chip:hover,.edu-canvas .calc-related__grid>a:hover,.edu-canvas .calc-related__grid>.calc-related__card:hover,.edu-canvas .calc-related-guides__grid>a:hover,.edu-canvas .calc-related-guides__grid>.calc-related-guides__card:hover{border-color:rgba(var(--section-accent-rgb,#ffffff1a), .35);box-shadow:0 8px 24px rgba(var(--section-accent-rgb,none), .12), 0 2px 6px #00000040;transform:translateY(-2px)}}.edu-canvas .glossary-chip:after{content:"";pointer-events:none;border-radius:inherit;background:radial-gradient(circle at top right, rgba(var(--section-accent-rgb), .06), transparent 55%);z-index:-1;position:absolute;inset:0}.edu-canvas .calc-section--extra{--section-accent:var(--calc-teal,#2dd4bf);--section-accent-rgb:0, 209, 193;border-color:#2dd4bf33}.edu-canvas .calc-section--extra .calc-section__icon{color:var(--calc-gold,#fbbf24);background:#fbbf2424;border-color:#fbbf2452}[data-theme=light] .edu-canvas .calc-section{background:radial-gradient(circle at top left, rgba(var(--section-accent-rgb), .04), transparent 60%), #fff;border-color:#0000001a;box-shadow:0 2px 12px #00000012}[data-theme=light] .edu-canvas .calc-section:hover{border-color:rgba(var(--section-accent-rgb,#ffffff1a), .3);box-shadow:0 6px 24px #0000001a, 0 0 0 1px rgba(var(--section-accent-rgb), .1)}[data-theme=light] .edu-canvas .calc-section__title{background:linear-gradient(135deg,#0f172a,#334155);-webkit-text-fill-color:transparent;color:#0000;-webkit-background-clip:text;background-clip:text}[data-theme=light] .edu-canvas .calc-section__header{border-bottom-color:#00000014}[data-theme=light] .edu-canvas .calc-section__icon{background:rgba(var(--section-accent-rgb,#050510), .1);border-color:rgba(var(--section-accent-rgb,#ffffff1a), .3);box-shadow:inset 0 0 0 1px #fff9, 0 2px 6px rgba(var(--section-accent-rgb), .08)}[data-theme=light] .edu-canvas .howto-step{background:#f8fafc;border-color:#00000014}[data-theme=light] .edu-canvas .howto-step:hover{border-color:rgba(var(--section-accent-rgb,#ffffff1a), .3);background:#f0f4f9;transform:none}[data-theme=light] .edu-canvas .howto-step__marker{background:rgba(var(--section-accent-rgb,#050510), .12);border-color:rgba(var(--section-accent-rgb,#ffffff1a), .35)}[data-theme=light] .edu-canvas .howto-step h3{color:#0f172a}[data-theme=light] .edu-canvas .howto-step p{color:#475569}[data-theme=light] .edu-canvas .glossary-chip{background:#f8fafc;border-color:#00000014}[data-theme=light] .edu-canvas .glossary-chip:hover{border-color:rgba(var(--section-accent-rgb,#ffffff1a), .35)}[data-theme=light] .edu-canvas .glossary-chip__def{color:#475569}[data-theme=light] .edu-canvas .examples-tabs{background:#f0f4f9;border-color:#00000014}[data-theme=light] .edu-canvas .examples-tab{color:#475569;background:0 0;border:none}[data-theme=light] .edu-canvas .examples-tab:hover:not(.active){color:#0f172a}[data-theme=light] .edu-canvas .examples-tab.active{color:var(--section-accent,#f8fafc);box-shadow:0 1px 3px #00000014, inset 0 0 0 1px 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