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*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#e8edf2;color:var(--ink);font:clamp(1rem,.25vw + .95rem,1.15rem)/1.68 Georgia,"Times New Roman",serif}
a{color:#174f87;text-underline-offset:.16em}.skip-link{position:absolute;left:-9999px;top:0}.skip-link:focus{left:1rem;top:1rem;z-index:10;background:#fff;color:#000;padding:.7rem 1rem;border:2px solid #000}
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.unit-nav{position:sticky;top:0;z-index:4;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 2px 10px #0f172a18;overflow-x:auto}.unit-nav ol{display:flex;gap:.35rem;list-style:none;padding:.6rem 0}.unit-nav a{display:block;white-space:nowrap;padding:.4rem .7rem;border-radius:.35rem;text-decoration:none;font:650 .9rem/1.2 system-ui,sans-serif}.unit-nav a:hover,.unit-nav a:focus{background:var(--soft)}
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.math.inline{font-family:"Cambria Math","STIX Two Math",serif;overflow-wrap:anywhere}.math.display{margin:1.25rem 0;padding:.8rem;overflow-x:auto;text-align:center;background:#f8fafc;border-radius:.35rem;color:#111827}
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p{max-width:74ch}.semantic-block p,.exercise p,.source-solution p{max-width:none}footer{background:#18324c;color:#fff;padding:1rem 0;margin-top:2rem}footer p{font:600 .85rem/1.4 system-ui,sans-serif}
@media(max-width:46rem){body{background:var(--paper)}main{width:100%;padding:1rem;box-shadow:none}.masthead-inner,.unit-nav ol,footer p{width:min(calc(100% - 1.4rem),var(--max))}.semantic-block,.exercise,.source-solution{padding:1rem}.unit-nav{position:static}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media(prefers-color-scheme:dark){:root{--paper:#111827;--ink:#e5e7eb;--muted:#bac5d1;--line:#475569;--soft:#26384d}.unit-nav{background:#111827}.semantic-block,.exercise{background:#172033}.source-solution{background:#102e29}.math.display{background:#f8fafc;color:#111827}.source-section h3,.semantic-block h4,.exercise h4,.source-solution h4,a{color:#8ec5ff}}

/* Keep MathJax's intrinsic width inside the reader-owned scrolling region. */
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/* Static-first controls for admitted animated media. */
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@media(prefers-reduced-motion:reduce){.animated-media-controls [data-animation-action="play"]::after{content:" (gerak dikurangi)"}}
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/* Receipt-backed source-linked animations remain explicit local downloads. */
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@media(prefers-color-scheme:dark){.source-linked-animation{background:#102e29}}


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.exam-form{margin:2rem 0;padding:1rem;border:1px solid var(--line);border-radius:.5rem}.exam-problem,.exam-solution{scroll-margin-top:5rem}
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.bridge .definition,.bridge .beispiel{padding:1rem;margin:1rem 0;border-left:4px solid var(--accent);background:var(--surface)}
.supplement .math.inline,.assessment-bank .math.inline{display:inline-block;max-width:100%;overflow-x:auto;overflow-y:hidden;vertical-align:middle}
.supplement .math.display,.assessment-bank .math.display{display:block;max-width:100%;overflow-x:auto;overflow-y:hidden}