#oott-academy{--ac-accent:#71dacc}
#oott-academy .ac-opening{max-width:1080px;margin:0 auto 46px;padding:0 20px}
#oott-academy .ac-opening .ac-figure{max-width:960px}
#oott-academy .ac-table:focus-visible{outline:3px solid #fff;outline-offset:5px}
#oott-academy .ac-figure{max-width:var(--image-width);margin:30px auto 36px;background:transparent}
#oott-academy .ac-figure img{display:block;width:100%;height:auto;object-fit:contain;border-radius:12px;border:1px solid #2e414f}
#oott-academy .ac-figure figcaption{padding:12px 2px 0;font-size:14px;line-height:1.65;color:#b9c8d2}
#oott-academy .ac-source{font-size:14px;line-height:1.6;color:#b9c8d2}
#oott-academy .ac-table{width:100%;overflow-x:auto;margin:26px 0;border:1px solid #36505f;border-radius:12px}
#oott-academy table{width:100%;border-collapse:collapse;font-size:16px;line-height:1.55;min-width:590px}
#oott-academy th,#oott-academy td{padding:16px;text-align:left;vertical-align:top;border-bottom:1px solid #2c404d}
#oott-academy thead th{background:#16313d;color:#fff}
#oott-academy tbody th{font-weight:600}
#oott-academy tbody tr:last-child>*{border-bottom:0}
#oott-academy tbody tr:nth-child(even){background:rgba(64,105,126,.09)}
#oott-academy .ac-flow{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:24px 0}
#oott-academy .ac-flow span{background:#15323e;border:1px solid #305563;border-radius:10px;padding:15px;color:#eafffa;font-size:16px;font-weight:600}
#oott-academy code{overflow-wrap:anywhere}
@media(max-width:820px){#oott-academy .ac-opening{margin-bottom:25px}
#oott-academy .ac-flow{grid-template-columns:1fr}
#oott-academy th,#oott-academy td{padding:12px}
#oott-academy .ac-figure{margin:24px auto 30px}}
#oott-academy .ac-diagram{margin:26px 0 32px}
#oott-academy .ac-diagram img{display:block;width:100%;height:auto;border-radius:14px;border:1px solid #3d5866}
#oott-academy .ac-diagram figcaption{padding:12px 2px 0;font-size:14px;line-height:1.65;color:#b9c8d2}
#oott-academy .ac-exercise{background:#112a35;border:1px solid #355563;border-left:4px solid #78d8c9;border-radius:12px;padding:22px;margin:26px 0}
#oott-academy .ac-exercise h3{margin:0 0 14px}
#oott-academy .ac-exercise p:last-child{margin-bottom:0}
#oott-academy .ac-answer{border:1px solid #3b5564;border-radius:10px;margin:12px 0;background:#102432}
#oott-academy .ac-answer summary{padding:18px 20px;cursor:pointer;font-weight:700;line-height:1.5}
#oott-academy .ac-answer p{padding:0 20px 20px;margin:0}
#oott-academy pre{max-width:100%;overflow:auto;padding:18px;background:#060f18;border:1px solid #35505f;border-radius:10px;font-size:15px;line-height:1.7}
#oott-academy pre code{white-space:pre;overflow-wrap:normal}
#oott-academy .ac-learning-map{background:#0f2633;border:1px solid #365566;padding:22px;border-radius:14px;margin:28px 0}
#oott-academy .ac-learning-map figcaption{font-size:19px;font-weight:700;color:#f0dea8;margin-bottom:18px}
#oott-academy .ac-diagram-grid{list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;padding:0;margin:0}
#oott-academy .ac-diagram-grid li{padding:18px;margin:0;background:#173847;border:1px solid #406374;border-radius:10px}
#oott-academy .ac-diagram-grid strong{display:block;color:#9be8dc;font-size:19px;margin-bottom:9px}
#oott-academy .ac-diagram-grid span{display:block;font-size:16px;line-height:1.6}
#oott-academy .ac-learning-map .ac-diagram-note{font-size:14px;line-height:1.65;margin:16px 0 0;color:#bfced8}
#oott-academy .ac-level-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
#oott-academy .ac-level-nav a{padding:9px 14px;min-height:44px;box-sizing:border-box;border:1px solid #44606f;border-radius:9px;color:#d4eee8;text-decoration:none;font-size:14px}
#oott-academy .ac-level-nav a[aria-current]{background:#294c54;border-color:#91d7cd;color:#fff}
#oott-academy .ac-table:focus-visible{outline:3px solid white;outline-offset:4px}
@media(max-width:600px){#oott-academy .ac-diagram-grid{grid-template-columns:1fr}
#oott-academy .ac-exercise,#oott-academy .ac-learning-map{padding:18px}
#oott-academy pre{font-size:13px}
#oott-academy .ac-figure{max-width:100%}}
#oott-academy .oott-e-content>section{scroll-margin-top:100px}
#oott-academy .oott-quick{margin:0 0 34px}
#oott-academy .oott-quick h2{margin:0 0 10px;padding:0;border:0;font:700 1.5rem/1.72 Inter,system-ui,"Segoe UI",sans-serif}
#oott-academy .oott-quick p{margin:0}