#xr-education .nb-intro{padding-top:42px;padding-bottom:42px}#xr-education .nb-kicker{font-size:12px;font-weight:800;color:#2864ed;letter-spacing:.08em}#xr-education .nb-lead{font-size:18px;line-height:1.8;max-width:740px}#xr-education .nb-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin:24px 0}#xr-education .nb-box{border:1px solid #dce5f2;border-radius:12px;background:#fff;padding:24px;min-width:0}#xr-education .nb-box h3{font-size:20px;margin:12px 0}#xr-education .nb-box p{font-size:15px;line-height:1.85}#xr-education .nb-box .nb-example{font-size:13px;background:#f3f7fc;border-radius:7px;padding:12px;margin-bottom:0}#xr-education .nb-symbol{display:grid;place-items:center;width:64px;height:64px;border-radius:16px;background:#edf4ff;color:#2864ed}#xr-education .nb-symbol svg{width:44px;height:44px}#xr-education .nb-flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin:22px 0}#xr-education .nb-flow button,#xr-education .nb-flow .nb-part{position:relative;display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;border:2px solid #dde6f4;border-radius:12px;background:#f8faff;padding:20px 10px;color:#253851;min-width:0;font:inherit}#xr-education .nb-flow button{cursor:pointer}#xr-education .nb-flow strong{font-size:16px}#xr-education .nb-flow small{font-size:12px;line-height:1.6}#xr-education .nb-flow>*:not(:last-child):after{content:'→';position:absolute;right:-22px;top:44%;font-size:24px;color:#2864ed;z-index:1}#xr-education .nb-flow .nb-active{border-color:#2864ed;background:#eaf2ff}#xr-education .nb-flow .nb-active .nb-symbol{background:#fff}#xr-education .nb-scene{padding:24px;border:1px solid #d6e3f4;border-radius:14px;background:#fff;margin:24px 0}#xr-education .nb-scene h3{font-size:21px;margin-top:0}#xr-education .nb-scene [data-nb-caption]{font-size:17px;line-height:1.8;min-height:62px}#xr-education .nb-tip{background:#edf4ff;border-left:3px solid #2864ed;padding:14px;font-size:14px;line-height:1.8}#xr-education .nb-controls{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:18px}#xr-education .nb-controls button{font:inherit;border:1px solid #c6d6ee;background:#fff;color:#2859b8;padding:10px 16px;border-radius:7px;cursor:pointer}#xr-education .nb-controls button[data-nb-next]{background:#2864ed;color:#fff;border-color:#2864ed}#xr-education .nb-controls [data-nb-count]{margin-left:auto;font-size:13px}#xr-education .nb-check-row{display:flex;flex-wrap:wrap;gap:14px;margin:24px 0}#xr-education .nb-check-row label{display:flex;align-items:center;gap:9px;background:#f2f6fc;padding:12px 16px;border-radius:8px;font-size:15px}#xr-education .nb-check-row input{width:20px;height:20px;accent-color:#2864ed}#xr-education .nb-result{padding:18px;background:#eaf2ff;border-radius:8px;font-size:16px;line-height:1.8;min-height:85px}#xr-education .nb-flow .nb-stopped{border-color:#d77b27;background:#fff4e8}#xr-education .nb-flow .nb-working{border-color:#89b2df}#xr-education .nb-advanced{margin:32px 0;border:1px solid #d5e0ee;border-radius:12px;overflow:hidden}#xr-education .nb-advanced>summary{padding:22px;cursor:pointer;font-size:17px;font-weight:750;background:#eff5fd;color:#193a6c}#xr-education .nb-advanced-body{padding:24px}#xr-education .nb-advanced-body>section:first-child{margin-top:0}#xr-education .nb-question{border:1px solid #dce4ef;border-radius:12px;padding:22px;margin:18px 0;background:#fff}#xr-education .nb-question h3{font-size:18px;line-height:1.7;margin-top:0}#xr-education .nb-question button{display:block;text-align:left;font:inherit;width:100%;background:#f7faff;border:1px solid #cddcef;border-radius:8px;padding:14px;margin:10px 0;color:#243b5b;cursor:pointer}#xr-education .nb-question button[aria-pressed=true]{border-color:#2864ed;box-shadow:inset 0 0 0 1px #2864ed}#xr-education [data-nb-feedback]{padding:14px;border-radius:8px;background:#fff3df;font-size:14px;line-height:1.8}#xr-education [data-nb-feedback].nb-answer-ok{background:#e8f5ee}#xr-education .nb-action{padding:24px;border-radius:12px;background:#eef5ff;margin:24px 0}#xr-education .nb-action h3{font-size:19px;margin-top:0}#xr-education .nb-action p{font-size:16px;line-height:1.8}#xr-education .nb-nav{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;margin:30px 0}#xr-education .nb-small{font-size:13px;line-height:1.8;color:#61718a}#xr-education .nb-word{border:1px solid #dce5f1;border-radius:8px;margin:12px 0;background:#fff}#xr-education .nb-word summary{cursor:pointer;padding:16px;font-weight:700;color:#234c8b}#xr-education .nb-word p{padding:0 16px 16px;margin:0;font-size:15px;line-height:1.9}#xr-education .nb-course-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}#xr-education .nb-course-grid .course-card{margin:0}#xr-education .nb-course-grid h2{font-size:23px}#xr-education .nb-course-grid .small{font-size:13px}#xr-education .nb-first{margin-top:20px}#xr-education .nb-section{margin-bottom:40px}#xr-education .nb-advanced-body .deep-table{max-width:100%;overflow:auto}#xr-education .nb-advanced-body pre{max-width:100%;overflow:auto}#xr-education .nb-course-intro{padding-top:24px;padding-bottom:24px}#xr-education .nb-course-intro .role-search{max-width:680px}#xr-education .nb-advanced [data-anime]{max-width:100%}@media(max-width:980px){#xr-education .nb-grid{grid-template-columns:1fr}#xr-education .nb-flow{gap:18px;grid-template-columns:repeat(2,minmax(0,1fr))}#xr-education .nb-flow>*:nth-child(2):after{content:'↓';right:auto;left:47%;top:auto;bottom:-27px}#xr-education .nb-flow>*:nth-child(3){grid-column:2;grid-row:2}#xr-education .nb-flow>*:nth-child(3):after{content:'←';right:auto;left:-22px}#xr-education .nb-flow>*:nth-child(4){grid-column:1;grid-row:2}}@media(max-width:650px){#xr-education .nb-course-grid{grid-template-columns:1fr}#xr-education .nb-box,#xr-education .nb-question,#xr-education .nb-scene{padding:18px}#xr-education .nb-advanced-body{padding:15px}#xr-education .nb-flow button,#xr-education .nb-flow .nb-part{padding:16px 8px}#xr-education .nb-flow strong{font-size:14px}#xr-education .nb-symbol{width:55px;height:55px}#xr-education .nb-scene [data-nb-caption]{font-size:15px}#xr-education .nb-lead{font-size:16px}#xr-education .nb-intro{padding-top:28px;padding-bottom:28px}}
#xr-education .nb-intro h2,#xr-education .nb-section h2,#xr-education .nb-course-intro h2{font-size:clamp(24px,2.5vw,32px);font-weight:800;line-height:1.6;margin:12px 0 20px}#xr-education .nb-kicker{margin:0 0 10px}#xr-education .hero .button{margin-top:18px}#xr-education .nb-advanced summary{line-height:1.7}

#xr-education .nb-toc-advanced{margin:20px 0;border-top:1px solid #dce5ef;padding-top:16px}#xr-education .nb-toc-advanced summary{font-size:12px;cursor:pointer;color:#42618d;line-height:1.7;margin-bottom:12px}