/* Scoped, progressively enhanced article experience. */
.academy-article.ald-reader{--aex-accent:#7253d8;--aex-aqua:#56d4c3;--aex-border:var(--line,#414c73)}
.academy-article.ald-reader .aex-quicknav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:24px 0 34px}
.academy-article.ald-reader .aex-quicknav>a{display:flex;gap:11px;align-items:center;text-decoration:none;color:inherit;padding:17px 13px;border:1px solid var(--aex-border);border-radius:18px;background:var(--panel,#1c203b);transition:transform .22s,border-color .22s}
.academy-article.ald-reader .aex-quicknav strong,.academy-article.ald-reader .aex-quicknav small{display:block}.academy-article.ald-reader .aex-quicknav strong{font-size:15px}.academy-article.ald-reader .aex-quicknav small{font-size:12px;line-height:1.5;opacity:.8;margin-top:4px}
.academy-article.ald-reader .aex-quicknav>a>svg{width:17px;flex-shrink:0;margin-left:auto}.academy-article.ald-reader .aex-icon{width:42px;height:42px;flex:0 0 42px;display:grid;place-items:center;border-radius:13px;background:#34305e;color:#d2c4ff}.academy-article.ald-reader .aex-icon svg{width:25px}
.academy-article.ald-reader .aex-quicknav>a:hover{transform:translateY(-3px);border-color:#ad9aff}
.academy-article.ald-reader .ald-section{border-radius:24px;margin-bottom:22px;scroll-margin-top:100px}
.academy-article.ald-reader .ald-section-number{display:inline-flex;align-items:center;gap:9px;letter-spacing:.1em}.academy-article.ald-reader .ald-section-number:before{content:'';width:8px;height:8px;border-radius:50%;background:#ad95ff;box-shadow:0 0 0 5px #a58bff16}
.academy-article.ald-reader .ald-section h2{line-height:1.3;margin-top:16px}.academy-article.ald-reader .ald-section p{line-height:1.75}.academy-article.ald-reader .ald-section pre{border:1px solid #566080;border-left:4px solid #9e83ff;border-radius:15px;background:#11172a;color:#e1e9ff;padding:20px;overflow-x:auto;max-width:100%;font-size:15px;line-height:1.7}
.academy-article.ald-reader .ald-section table{border-radius:12px;font-variant-numeric:tabular-nums}.academy-article.ald-reader .ald-section th{background:#30395d;color:#f3f5ff}.academy-article.ald-reader .ald-section tr:nth-child(even) td{background:#828aff0b}
.academy-article.ald-reader .learning-figure{margin:28px 0}.academy-article.ald-reader .learning-figure svg{width:100%;height:auto;display:block}.academy-article.ald-reader .learning-figure figcaption{font-size:13px;line-height:1.6;opacity:.8;margin-top:10px}
.academy-article.ald-reader .ald-lab,.academy-article.ald-reader .learn-lab,.academy-article.ald-reader .aex-lab{position:relative;border:1px solid #7666ac;border-radius:22px;padding:26px;margin:28px 0;background:radial-gradient(ellipse at 100% 0,#50427a77,transparent 55%),linear-gradient(145deg,#182b3f,#201c38);color:#f4f4ff;overflow:hidden;box-shadow:0 12px 35px #070c181c}
.academy-article.ald-reader .ald-lab h3,.academy-article.ald-reader .learn-lab h3,.academy-article.ald-reader .aex-lab h3{color:#fff;font-size:24px;line-height:1.35;margin:14px 0}.academy-article.ald-reader .ald-lab p,.academy-article.ald-reader .learn-lab p,.academy-article.ald-reader .aex-lab p{color:#d2daef;line-height:1.7}.academy-article.ald-reader .ald-lab-label,.academy-article.ald-reader .lab-kicker{color:#9df1db;letter-spacing:.1em;font-size:12px;font-weight:800}
.academy-article.ald-reader .aex-kicker{display:flex;align-items:center;gap:9px;font-size:12px;font-weight:800;letter-spacing:.13em;color:#a38aee;background:none;margin:0 0 12px}.academy-article.ald-reader .aex-kicker svg{width:21px}.academy-article.ald-reader .aex-lab .aex-kicker{color:#9df1db}
.academy-article.ald-reader .ald-lab-controls button,.academy-article.ald-reader .lab-actions button,.academy-article.ald-reader .bit-controls button{min-height:44px;border-radius:12px;border:1px solid #75829f;transition:background .2s,transform .2s}.academy-article.ald-reader .ald-lab-controls button:hover,.academy-article.ald-reader .bit-controls button:hover{transform:translateY(-2px)}
.academy-article.ald-reader .ald-lab-output,.academy-article.ald-reader .lab-result{background:#101e30;color:#a5f5de;border:1px solid #3d6d73;border-radius:14px;padding:17px}.academy-article.ald-reader .ald-lab-cells span{color:#d9e7ff;background:#293853}.academy-article.ald-reader .ald-lab-cells span.is-active{background:#5c448c;color:#fff}
.academy-article.ald-reader .aex-lab-controls{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:20px 0}.academy-article.ald-reader .aex-lab-controls label{display:flex;align-items:center;gap:10px;min-height:46px;padding:10px 13px;border:1px solid #7184a1;border-radius:12px;background:#16243e;font-size:14px;cursor:pointer;max-width:100%;color:#f2f5ff}.academy-article.ald-reader .aex-lab-controls input{accent-color:#9773f5;width:19px;height:19px;flex-shrink:0}.academy-article.ald-reader .aex-lab-controls select{max-width:100%;min-width:0;background:#24364c;color:#fff;border:1px solid #6b779f;border-radius:8px;padding:8px}
.academy-article.ald-reader .aex-metric{display:flex;align-items:center;gap:18px;background:#101c31;border:1px solid #385969;border-radius:18px;padding:20px;margin:16px 0}.academy-article.ald-reader .aex-metric output{font-size:48px;line-height:1.1;font-weight:850;color:#99efd9;font-variant-numeric:tabular-nums;white-space:nowrap}.academy-article.ald-reader .aex-metric span{font-size:16px;color:#d7e2f6}
.academy-article.ald-reader .aex-word-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.academy-article.ald-reader .aex-word-grid span{font-family:monospace;text-align:center;border:1px solid #655e96;border-radius:10px;background:#353055;padding:12px;letter-spacing:4px}.academy-article.ald-reader .aex-node-grid{display:grid;grid-template-columns:repeat(9,1fr);gap:6px}.academy-article.ald-reader .aex-node-grid>span{display:grid;gap:8px;text-align:center;background:#26374f;border:1px solid #556586;border-radius:10px;padding:10px 2px}.academy-article.ald-reader .aex-node-grid small{color:#c4cce4}.academy-article.ald-reader .aex-node-grid b{font-size:23px;color:#a8f7e0}.academy-article.ald-reader .aex-node-grid .is-blocked{opacity:.55;text-decoration:line-through}.academy-article.ald-reader .aex-node-grid .is-via{border:2px solid #b397ff}
.academy-article.ald-reader .aex-timeline{display:grid;gap:12px;margin:24px 0}.academy-article.ald-reader .aex-timeline-row{display:grid;grid-template-columns:24px 1fr 58px;align-items:center;gap:12px;font-size:13px}.academy-article.ald-reader .aex-track{height:30px;border-radius:7px;background:#ffffff0a;position:relative;overflow:hidden}.academy-article.ald-reader .aex-track>span{display:block;margin-left:var(--start);width:var(--length);height:100%;border-radius:7px;background:linear-gradient(100deg,#926bdd,#5abed2);transition:margin-left .35s,width .35s}.academy-article.ald-reader .aex-lab-note{font-size:13px}
.academy-article.ald-reader .aex-interlude{display:flex;align-items:center;gap:20px;margin:26px 0;padding:24px;border-radius:22px;background:linear-gradient(120deg,#163c59,#222a50);border:1px solid #437392;color:#fff}.academy-article.ald-reader .aex-orbit{flex:0 0 55px;width:55px;height:55px;border-radius:17px;display:grid;place-items:center;background:#1595c9}.academy-article.ald-reader .aex-orbit svg{width:32px}.academy-article.ald-reader .aex-interlude strong{display:block;font-size:18px;line-height:1.4}.academy-article.ald-reader .aex-interlude p{margin:6px 0 0;color:#c8deef;font-size:13px}.academy-article.ald-reader .aex-interlude a{margin-left:auto;display:flex;align-items:center;gap:10px;color:#fff;background:#2e587a;border:1px solid #5683a7;border-radius:12px;min-height:44px;padding:12px;text-decoration:none;font-size:14px;font-weight:700;flex-shrink:0}.academy-article.ald-reader .aex-interlude a svg{width:18px}
.academy-article.ald-reader .aex-next,.academy-article.ald-reader .aex-social-section,.academy-article.ald-reader .aex-related{margin:36px 0;scroll-margin-top:100px}.academy-article.ald-reader .aex-next h2,.academy-article.ald-reader .aex-social-section h2{font-size:32px;line-height:1.2;margin:10px 0}.academy-article.ald-reader .aex-subtitle{opacity:.8;margin:8px 0 24px}
.academy-article.ald-reader .aex-destinations{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.academy-article.ald-reader .aex-destination{display:flex;flex-direction:column;border-radius:23px;overflow:hidden;background:var(--panel,#1c203b);color:inherit;text-decoration:none;border:1px solid var(--aex-border);transition:transform .25s,box-shadow .25s}.academy-article.ald-reader .aex-destination:hover{transform:translateY(-4px);box-shadow:0 15px 28px #0002;border-color:#9683d4}.academy-article.ald-reader .aex-card-art{height:162px;position:relative;display:block;background:#1a2542;overflow:hidden}.academy-article.ald-reader .aex-card-art>img{width:100%;height:100%;object-fit:cover;display:block}.academy-article.ald-reader .aex-practice .aex-card-art>img{object-fit:contain;transform:scale(1.06)}
.academy-article.ald-reader .aex-art-badge{position:absolute;bottom:11px;left:12px;display:flex;align-items:center;gap:7px;background:#10162ddb;color:#fff;padding:7px 10px;border:1px solid #d1c5ff45;border-radius:9px;letter-spacing:.08em;font-size:10px;font-weight:800}.academy-article.ald-reader .aex-art-badge svg{width:16px}
.academy-article.ald-reader .aex-course-art{background:radial-gradient(ellipse at 50% 40%,#66549a,#242440);display:grid;place-items:center}.academy-article.ald-reader .aex-book-illustration{width:83px;height:83px;padding:16px;background:#c2adff;color:#322054;border-radius:18px;transform:rotate(-8deg);box-shadow:10px 10px 0 #a68cf025}.academy-article.ald-reader .aex-book-illustration svg{width:100%;height:100%}.academy-article.ald-reader .aex-course-chip{position:absolute;background:#201b40;border:1px solid #b6a7e675;color:#e5dfff;border-radius:9px;padding:6px 9px;font-size:12px;font-weight:700}.academy-article.ald-reader .chip-one{top:21px;left:14px;transform:rotate(-8deg)}.academy-article.ald-reader .chip-two{top:20px;right:16px;transform:rotate(9deg)}.academy-article.ald-reader .chip-three{bottom:24px;right:10px;transform:rotate(-5deg)}.academy-article.ald-reader .aex-teacher-art img{object-position:50% 28%}
.academy-article.ald-reader .aex-destination-body{padding:21px;display:flex;flex:1;flex-direction:column;gap:12px}.academy-article.ald-reader .aex-destination-body h3{font-size:21px;margin:0;line-height:1.3}.academy-article.ald-reader .aex-destination-body p{font-size:14px;line-height:1.65;opacity:.9;margin:0 0 4px}.academy-article.ald-reader .aex-card-action{display:flex;align-items:center;gap:12px;margin-top:auto;min-height:46px;font-size:14px;font-weight:800;color:inherit;text-decoration:none}.academy-article.ald-reader .aex-card-action svg{width:22px;flex-shrink:0;margin-left:auto}.academy-article.ald-reader .aex-teacher .aex-card-action{background:#7253ce;color:white;padding:12px;border-radius:11px}.academy-article.ald-reader .aex-secondary{font-size:13px;color:inherit}
.academy-article.ald-reader .aex-social-section{padding:30px;border:1px solid #80609a66;border-radius:25px;background:radial-gradient(ellipse at 100% 0,#8c57922a,transparent 60%),var(--panel,#1c203b)}.academy-article.ald-reader .aex-social-heading{display:flex;justify-content:space-between;gap:16px;align-items:center}.academy-article.ald-reader .aex-social-heading p:not(.aex-kicker){font-size:14px;opacity:.85}.academy-article.ald-reader .aex-social-symbol{width:62px;flex-shrink:0;color:#b6a1e5;transform:rotate(-8deg)}.academy-article.ald-reader .aex-social-symbol svg{width:100%}
.academy-article.ald-reader .aex-social-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:24px}.academy-article.ald-reader .aex-social{display:flex;flex-direction:column;align-items:flex-start;gap:9px;text-decoration:none;color:#fff;padding:22px 18px;border:1px solid #ffffff26;border-radius:19px;transition:transform .2s,filter .2s}.academy-article.ald-reader .aex-vk{background:linear-gradient(145deg,#18416f,#225996)}.academy-article.ald-reader .aex-tg{background:linear-gradient(145deg,#164963,#216a85)}.academy-article.ald-reader .aex-ig{background:linear-gradient(145deg,#503570,#874354)}.academy-article.ald-reader .aex-social:hover{transform:translateY(-4px);filter:brightness(1.13)}.academy-article.ald-reader .aex-brand{display:grid;place-items:center;width:45px;height:45px;border-radius:14px;background:#ffffff17}.academy-article.ald-reader .aex-brand svg{width:29px}.academy-article.ald-reader .aex-social strong{font-size:21px}.academy-article.ald-reader .aex-social>span:not(.aex-brand){font-size:12px;color:#e4ecff}.academy-article.ald-reader .aex-social b{font-size:12px;margin-top:9px}
.academy-article.ald-reader .aex-bonus{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;line-height:1.5;color:inherit;text-decoration:none;border-top:1px solid var(--aex-border);margin-top:24px;padding-top:20px}.academy-article.ald-reader .aex-bonus svg{width:24px;color:#d7ad59}.academy-article.ald-reader .aex-bonus span{margin-left:auto;font-weight:700}
.academy-article.ald-reader .aex-section-heading{display:flex;justify-content:space-between;align-items:center;gap:16px}.academy-article.ald-reader .aex-section-heading a{font-size:14px;color:inherit}.academy-article.ald-reader .aex-related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.academy-article.ald-reader .aex-related-grid>a{display:flex;flex-direction:column;color:inherit;text-decoration:none;border:1px solid var(--aex-border);border-radius:18px;overflow:hidden;background:var(--panel,#1c203b)}.academy-article.ald-reader .aex-related-grid img{width:100%;height:auto;aspect-ratio:2;object-fit:cover}.academy-article.ald-reader .aex-related-grid>a>span{padding:17px;display:flex;flex-direction:column;gap:10px;flex:1}.academy-article.ald-reader .aex-related-grid small{font-size:11px;opacity:.8}.academy-article.ald-reader .aex-related-grid strong{font-size:17px;line-height:1.4}.academy-article.ald-reader .aex-related-grid b{display:flex;align-items:center;justify-content:space-between;font-size:12px;margin-top:auto;padding-top:7px}.academy-article.ald-reader .aex-related-grid svg{width:18px}
.academy-article.ald-reader .exercise{border-radius:18px;border:1px solid var(--aex-border);padding:22px;margin-top:16px}.academy-article.ald-reader .answer-row input{border-radius:11px;min-height:46px}.academy-article.ald-reader .answer-row button{border-radius:11px;min-height:46px}.academy-article.ald-reader .practice-progress{border-radius:16px;border:1px solid #558376;background:#43867312;padding:16px}.academy-article.ald-reader .ald-toc{align-self:start}.academy-article.ald-reader .ald-toc a{border-radius:8px;transition:background .2s}.academy-article.ald-reader .ald-toc a:hover{background:#9380e31a}
.academy-article.ald-reader a:focus-visible,.academy-article.ald-reader button:focus-visible,.academy-article.ald-reader select:focus-visible,.academy-article.ald-reader input:focus-visible{outline:3px solid #a98bf4;outline-offset:4px}
.academy-article.ald-reader .aex-pulse{animation:aex-result .35s ease-out}@keyframes aex-result{0%{transform:translateY(5px);opacity:.65}100%{transform:translateY(0);opacity:1}}
@media(min-width:1050px){.academy-article.ald-reader .ald-story-layout{grid-template-columns:230px minmax(0,1fr);gap:28px}.academy-article.ald-reader .ald-story-body{min-width:0}}
@media(max-width:1050px){.academy-article.ald-reader .aex-quicknav{grid-template-columns:repeat(2,minmax(0,1fr))}.academy-article.ald-reader .aex-destinations{gap:10px}.academy-article.ald-reader .aex-destination-body{padding:16px}}
@media(max-width:700px){.academy-article.ald-reader .aex-quicknav{gap:9px}.academy-article.ald-reader .aex-quicknav>a{padding:12px;gap:9px}.academy-article.ald-reader .aex-quicknav>a>svg{display:none}.academy-article.ald-reader .aex-icon{width:32px;height:36px;flex-basis:32px}.academy-article.ald-reader .aex-icon svg{width:21px}.academy-article.ald-reader .aex-quicknav strong{font-size:13px}.academy-article.ald-reader .aex-quicknav small{font-size:10px}.academy-article.ald-reader .ald-lab,.academy-article.ald-reader .learn-lab,.academy-article.ald-reader .aex-lab{padding:19px 15px}.academy-article.ald-reader .ald-lab h3,.academy-article.ald-reader .learn-lab h3,.academy-article.ald-reader .aex-lab h3{font-size:21px}.academy-article.ald-reader .aex-interlude{flex-wrap:wrap;padding:20px;gap:14px}.academy-article.ald-reader .aex-interlude>div{flex:1;min-width:170px}.academy-article.ald-reader .aex-interlude a{margin-left:0}.academy-article.ald-reader .aex-destinations,.academy-article.ald-reader .aex-social-grid,.academy-article.ald-reader .aex-related-grid{grid-template-columns:1fr}.academy-article.ald-reader .aex-destination{display:grid;grid-template-columns:110px minmax(0,1fr)}.academy-article.ald-reader .aex-card-art{height:100%;min-height:205px}.academy-article.ald-reader .aex-practice .aex-card-art>img{object-fit:cover;object-position:center}.academy-article.ald-reader .aex-art-badge{font-size:8px;left:6px;padding:5px;bottom:8px;letter-spacing:0}.academy-article.ald-reader .aex-art-badge svg{display:none}.academy-article.ald-reader .aex-book-illustration{width:66px;height:66px;padding:12px}.academy-article.ald-reader .aex-course-chip{font-size:10px;padding:5px}.academy-article.ald-reader .chip-one{top:25px;left:8px}.academy-article.ald-reader .chip-two{top:60px;right:5px}.academy-article.ald-reader .chip-three{bottom:40px;right:12px}.academy-article.ald-reader .aex-destination-body h3{font-size:20px}.academy-article.ald-reader .aex-destination-body p{font-size:13px}.academy-article.ald-reader .aex-card-action{font-size:13px}.academy-article.ald-reader .aex-next h2,.academy-article.ald-reader .aex-social-section h2{font-size:27px}.academy-article.ald-reader .aex-social-section{padding:22px 17px}.academy-article.ald-reader .aex-social-symbol{display:none}.academy-article.ald-reader .aex-social{display:grid;grid-template-columns:45px 1fr;padding:18px;gap:5px 15px}.academy-article.ald-reader .aex-brand{grid-row:1/4}.academy-article.ald-reader .aex-social b{grid-column:2;margin-top:6px}.academy-article.ald-reader .aex-related-grid>a{flex-direction:row}.academy-article.ald-reader .aex-related-grid img{width:100px;object-fit:cover;aspect-ratio:auto}.academy-article.ald-reader .aex-related-grid>a>span{padding:16px}.academy-article.ald-reader .aex-word-grid{grid-template-columns:repeat(3,1fr)}.academy-article.ald-reader .aex-word-grid span{font-size:14px;letter-spacing:2px;padding:10px 4px}.academy-article.ald-reader .aex-node-grid{grid-template-columns:repeat(5,1fr)}.academy-article.ald-reader .aex-metric{padding:17px;gap:12px}.academy-article.ald-reader .aex-metric output{font-size:38px}.academy-article.ald-reader .aex-metric span{font-size:13px}.academy-article.ald-reader .aex-lab-controls label{flex-wrap:wrap}.academy-article.ald-reader .aex-lab-controls select{font-size:13px}.academy-article.ald-reader .exercise{padding:17px}.academy-article.ald-reader .aex-bonus span{margin-left:36px}.academy-article.ald-reader .aex-section-heading{align-items:baseline}.academy-article.ald-reader .aex-section-heading h2{font-size:23px}.academy-article.ald-reader .aex-section-heading a{white-space:nowrap}}
@media(prefers-reduced-motion:reduce){.academy-article.ald-reader *{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

@media(min-width:1050px){.academy-article.ald-reader .ald-toc details{max-height:calc(100vh - 145px);overflow-y:auto;scrollbar-width:thin}}
.academy-article.ald-reader #article-lab{scroll-margin-top:100px}

.academy-article.ald-reader .aex-practice-symbol{display:none}@media(max-width:700px){.academy-article.ald-reader .aex-practice .aex-card-art{background:radial-gradient(ellipse at 50% 45%,#316d72,#172c46)}.academy-article.ald-reader .aex-practice .aex-card-art>img{display:none}.academy-article.ald-reader .aex-practice-symbol{display:block;position:absolute;top:34%;left:20%;width:60%;color:#8eebd6;transform:rotate(-8deg)}.academy-article.ald-reader .aex-practice-symbol svg{width:100%}}

.academy-article.ald-reader :is(.ald-lab,.learn-lab,.aex-lab,.aex-interlude,.aex-social){--ink:#f4f4ff;--muted:#d2daef;--accent:#c9b9ff;--reader-link:#c9b9ff;--reader-success:#9ae4d4}.academy-article.ald-reader :is(.ald-lab,.learn-lab,.aex-lab) :is(b,strong){color:#f4f4ff}.academy-article.ald-reader .aex-social :is(b,strong){color:#fff}.academy-article.ald-reader .aex-interlude strong{color:#fff}
.academy-article.ald-reader :is(.learn-lab,.ald-lab) button{background:#283954;color:#f4f6ff;border:1px solid #7583a1}.academy-article.ald-reader :is(.learn-lab,.ald-lab) button[aria-pressed=true]{background:#7254b5;color:#fff;border-color:#ba9ff2}.academy-article.ald-reader :is(.learn-lab,.ald-lab) button:hover{background:#435075;color:#fff}.academy-article.ald-reader .learn-lab input{background:#16243e;color:#fff}.academy-article.ald-reader .learn-route a{color:#c9b9ff}.academy-article.ald-reader .aex-lab-controls input[type=checkbox]{flex:0 0 19px;padding:0}

/* Keep anchor headings clear of the shared header and two-digit TOC numbers readable. */
.academy-article.ald-reader :is(.aex-next,.aex-social-section,.aex-related,#article-lab){scroll-margin-top:125px}.academy-article.ald-reader .ald-toc ol{padding-left:27px;padding-right:4px}
