/* EDUCypher Learning Academy v2
   Scope intentionally limited to learn.php, course.php and lesson.php. */
:root{--learn-bg:#071019;--learn-panel:#0c1723;--learn-panel-2:#101e2d;--learn-line:#ffffff12;--learn-line-strong:#ffffff22;--learn-text:#f5f8ff;--learn-muted:#8fa0b6;--learn-soft:#c4d0df;--learn-blue:#74a7ff;--learn-cyan:#6de7dd;--learn-green:#8be39b;--learn-orange:#ffbd72;--course-accent:#74a7ff}
.learning-v2{background:var(--learn-bg);color:var(--learn-text)}
.learning-v2:before{content:'';position:fixed;inset:0;pointer-events:none;z-index:-1;background:radial-gradient(circle at 86% 0%,#315e8c2d,transparent 28%),radial-gradient(circle at 4% 42%,#163b4b20,transparent 24%),linear-gradient(180deg,#071019,#08111b 42%,#060d15)}
.learning-v2 h1,.learning-v2 h2,.learning-v2 h3{color:var(--learn-text)}
.learning-v2 p{color:var(--learn-muted)}
.learn-nav{position:sticky;top:0;z-index:50;height:72px;display:flex;align-items:center;gap:26px;padding:0 clamp(18px,4vw,64px);background:#071019e8;border-bottom:1px solid var(--learn-line);backdrop-filter:blur(22px)}
.learn-nav .brand{font-size:25px}.learn-nav nav{display:flex;align-items:center;gap:20px;margin-left:auto}.learn-nav nav a,.learn-nav nav button{font-size:12px;color:#b2c0d2}.learn-nav nav a:hover,.learn-nav nav a.active{color:#fff}.lesson-nav-title{font:10px ui-monospace,monospace;letter-spacing:.12em;color:var(--learn-muted);border-left:1px solid var(--learn-line);padding-left:18px;max-width:240px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.academy-main{max-width:1600px;margin:auto}.academy-kicker{font:11px/1.4 ui-monospace,monospace;letter-spacing:.17em;color:var(--course-accent,var(--learn-blue))!important;text-transform:uppercase;margin:0 0 16px}.academy-primary,.academy-secondary{display:inline-flex;align-items:center;justify-content:center;min-height:44px;border-radius:12px;padding:11px 17px;font-size:13px;font-weight:700;transition:.2s ease}.academy-primary{border:1px solid transparent;background:var(--course-accent,var(--learn-blue));color:#071019}.academy-secondary{border:1px solid var(--learn-line-strong);background:#ffffff05;color:var(--learn-text)}.academy-primary:hover,.academy-secondary:hover{transform:translateY(-2px);box-shadow:0 12px 30px #0004}.academy-secondary:hover{border-color:#ffffff48;background:#ffffff0a}

/* Library */
.academy-hero{min-height:650px;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(360px,.85fr);gap:70px;align-items:center;padding:clamp(70px,10vw,150px) clamp(22px,6vw,92px) 90px;border-bottom:1px solid var(--learn-line)}.academy-hero-copy{max-width:850px}.academy-hero h1{font-size:clamp(58px,8.3vw,128px);line-height:.92;letter-spacing:-.065em;margin:0 0 30px}.academy-hero h1 span{color:#8294aa}.academy-lead{font-size:clamp(17px,1.7vw,23px);max-width:720px;line-height:1.55}.academy-hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:30px}.academy-stats{display:flex;gap:28px;flex-wrap:wrap;margin-top:64px}.academy-stats>div{padding-right:28px;border-right:1px solid var(--learn-line)}.academy-stats>div:last-child{border:0}.academy-stats b{display:block;font:36px/1 var(--display);letter-spacing:-.05em}.academy-stats span{display:block;margin-top:8px;font:10px ui-monospace,monospace;letter-spacing:.1em;color:var(--learn-muted);text-transform:uppercase}
.academy-map{position:relative;aspect-ratio:1/1;max-width:580px;width:100%;justify-self:end;border:1px solid var(--learn-line);border-radius:50%;background:radial-gradient(circle,#152a3c66 0 1px,transparent 1px);background-size:16px 16px;box-shadow:inset 0 0 100px #0b1d2d88,0 30px 90px #0005}.map-orbit{position:absolute;inset:14%;border:1px dashed #74a7ff35;border-radius:50%;animation:mapspin 28s linear infinite}.map-node{position:absolute;z-index:2;display:grid;place-items:center;min-width:105px;min-height:52px;padding:10px;border:1px solid var(--learn-line-strong);border-radius:13px;background:#0b1724e8;box-shadow:0 12px 28px #0004;font:10px ui-monospace,monospace;letter-spacing:.08em}.map-root{left:50%;top:50%;transform:translate(-50%,-50%);border-color:#74a7fF66;color:#d7e5ff}.map-explain{left:10%;top:20%}.map-visual{right:6%;top:28%}.map-practice{left:8%;bottom:16%}.map-check{right:12%;bottom:13%}.map-line{position:absolute;left:50%;top:50%;width:38%;height:1px;background:linear-gradient(90deg,#74a7ff77,transparent);transform-origin:left}.l1{transform:rotate(-140deg)}.map-caption{position:absolute;bottom:7%;left:50%;transform:translateX(-50%);font:9px ui-monospace,monospace;letter-spacing:.12em;color:#6c7e94}.academy-section{padding:90px clamp(22px,6vw,92px)}.academy-section-head{display:flex;justify-content:space-between;gap:30px;margin-bottom:38px}.academy-section-head>div{max-width:780px}.academy-section-head h2{font-size:clamp(36px,5vw,72px);letter-spacing:-.055em;margin:0 0 13px}.academy-section-head p:not(.academy-kicker){font-size:16px;max-width:650px}.course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.course-card{--course-accent:#74a7ff;min-width:0;border:1px solid color-mix(in srgb,var(--course-accent) 26%,var(--learn-line));border-radius:22px;background:linear-gradient(155deg,color-mix(in srgb,var(--course-accent) 9%,var(--learn-panel-2)),var(--learn-panel) 54%);overflow:hidden;position:relative;transition:transform .24s,border-color .24s,box-shadow .24s}.course-card:after{content:'';position:absolute;inset:0 0 auto;height:3px;background:var(--course-accent)}.course-card:hover{transform:translateY(-6px);border-color:color-mix(in srgb,var(--course-accent) 55%,transparent);box-shadow:0 25px 70px #0005}.course-card>a{display:flex;flex-direction:column;min-height:440px;padding:26px}.course-card-top{display:flex;align-items:center;justify-content:space-between}.course-icon{display:grid;place-items:center;width:50px;height:50px;border-radius:14px;background:color-mix(in srgb,var(--course-accent) 10%,transparent);border:1px solid color-mix(in srgb,var(--course-accent) 30%,transparent);color:var(--course-accent);font-size:24px}.course-index{font:9px ui-monospace,monospace;letter-spacing:.12em;color:#697c92}.course-kicker{margin:30px 0 9px!important;color:var(--course-accent)!important;font:10px ui-monospace,monospace;letter-spacing:.14em}.course-card h3{font-size:31px;line-height:1.05;margin:0 0 12px}.course-card> a > p{font-size:14px;min-height:66px}.course-meta{display:flex;flex-wrap:wrap;gap:7px;margin:18px 0}.course-meta span,.lesson-card-meta span{font:9px ui-monospace,monospace;letter-spacing:.08em;border:1px solid var(--learn-line);border-radius:999px;padding:6px 8px;color:#9fb0c4}.course-tags{display:flex;gap:6px;flex-wrap:wrap}.course-tags span{font-size:11px;color:#93a3b8;background:#ffffff05;border-radius:7px;padding:5px 8px}.course-open{margin-top:auto;padding-top:25px;display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--learn-line);color:var(--learn-text);font-size:12px}.course-open span{font-size:22px;color:var(--course-accent)}.academy-method{padding:90px clamp(22px,6vw,92px);border-block:1px solid var(--learn-line);background:#ffffff018}.method-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--learn-line);border-radius:20px;overflow:hidden}.method-grid article{padding:27px;min-height:210px;border-right:1px solid var(--learn-line)}.method-grid article:last-child{border:0}.method-grid span{font:11px ui-monospace,monospace;color:var(--learn-blue)}.method-grid b{display:block;font-size:22px;margin:30px 0 9px}.method-grid p{font-size:13px}.academy-library-section{padding-bottom:120px}.learn-toolbar{display:grid;grid-template-columns:2fr 1fr 1fr;gap:10px;margin-bottom:24px}.learn-toolbar label{display:grid;gap:6px}.learn-toolbar label>span{font:9px ui-monospace,monospace;letter-spacing:.1em;color:#71859b;text-transform:uppercase}.learn-toolbar input,.learn-toolbar select{width:100%;min-height:46px;padding:0 14px;border:1px solid var(--learn-line);border-radius:12px;background:#0b1622;color:var(--learn-text)}.lesson-library-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.lesson-library-card{border:1px solid var(--learn-line);border-radius:18px;overflow:hidden;background:var(--learn-panel);transition:.2s}.lesson-library-card:hover{transform:translateY(-3px);border-color:#ffffff30}.lesson-library-card[hidden]{display:none}.lesson-library-card>a{display:block;height:100%}.lesson-thumb{height:155px;position:relative;display:grid;place-items:center;background:radial-gradient(circle at 80% 10%,#315d8848,transparent 38%),#0b1622;overflow:hidden}.lesson-thumb img{width:100%;height:100%;object-fit:cover}.lesson-thumb>span{font:48px var(--display);color:#7590ad55}.lesson-thumb em{position:absolute;top:12px;right:12px;font:8px ui-monospace,monospace;letter-spacing:.1em;padding:5px 7px;border:1px solid var(--learn-line-strong);border-radius:999px;background:#071019bb;color:#b7c7da;font-style:normal}.lesson-library-copy{padding:20px}.lesson-card-meta{display:flex;gap:5px;flex-wrap:wrap}.lesson-library-copy h3{font-size:22px;margin:14px 0 8px}.lesson-library-copy p{font-size:13px;min-height:62px}.lesson-library-copy>b{display:block;margin-top:20px;font-size:12px;color:var(--learn-blue)}.academy-empty,.academy-notice{padding:35px;border:1px dashed var(--learn-line-strong);border-radius:18px;background:#ffffff02}.academy-empty h3{font-size:26px}.academy-notice{color:var(--learn-soft)}

/* Course page */
.course-hero{max-width:1480px;margin:auto;padding:90px clamp(22px,6vw,90px) 70px;display:grid;grid-template-columns:100px minmax(0,1fr) minmax(270px,360px);gap:34px;border-bottom:1px solid var(--learn-line)}.course-hero-index{width:82px;height:82px;display:grid;place-items:center;border-radius:24px;border:1px solid color-mix(in srgb,var(--course-accent) 42%,transparent);background:color-mix(in srgb,var(--course-accent) 10%,transparent);color:var(--course-accent);font-size:38px}.course-hero-copy h1{font-size:clamp(50px,7vw,98px);line-height:.96;letter-spacing:-.06em;margin:0 0 20px}.course-hero-lead{font-size:19px;max-width:800px}.course-meta-large{margin-top:24px}.course-description{max-width:850px;margin-top:30px;padding-top:26px;border-top:1px solid var(--learn-line);color:#b4c2d3;line-height:1.8}.course-hero-aside{padding-left:28px;border-left:1px solid var(--learn-line)}.course-hero-aside>a{display:grid;grid-template-columns:34px 1fr auto;gap:10px;align-items:center;padding:13px 0;border-top:1px solid var(--learn-line);font-size:12px}.course-hero-aside>a span{font:9px ui-monospace,monospace;color:var(--course-accent)}.course-hero-aside>a b{font-size:12px}.course-hero-aside>a em{font:9px ui-monospace,monospace;color:#73859a;font-style:normal}.course-progress-box{margin-top:34px;padding:17px;border:1px solid var(--learn-line);border-radius:14px;background:#ffffff03;max-width:650px}.course-progress-box>div:first-child{display:flex;justify-content:space-between;gap:20px}.course-progress-box b{font-size:12px}.course-progress-box span,.course-progress-box small{font:9px ui-monospace,monospace;color:var(--learn-muted)}.course-progress-track{height:5px!important;background:#ffffff0a;border-radius:99px;overflow:hidden;margin:11px 0}.course-progress-track i{display:block;width:0;height:100%;background:var(--course-accent);border-radius:inherit;transition:width .3s}.course-roadmap{max-width:1280px;margin:auto;padding:70px clamp(22px,5vw,70px) 100px}.course-module{margin-bottom:72px;scroll-margin-top:100px}.course-module>header{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:18px}.course-module>header span{font:10px ui-monospace,monospace;letter-spacing:.12em;color:var(--course-accent)}.course-module>header h2{font-size:42px;margin:5px 0 0}.course-module>header>p{font:10px ui-monospace,monospace}.course-lessons{display:grid;gap:8px}.course-lesson{display:grid;grid-template-columns:40px 1fr;gap:9px;align-items:stretch}.course-check{width:38px!important;min-height:38px!important;height:38px;padding:0!important;border-radius:50%!important;align-self:center;color:#64758b!important;background:#ffffff04!important;border:1px solid var(--learn-line)!important}.course-lesson.completed .course-check{background:var(--course-accent)!important;color:#071019!important;border-color:transparent!important}.course-lesson>a{display:grid;grid-template-columns:52px minmax(0,1fr) auto;gap:16px;align-items:center;padding:19px 22px;border:1px solid var(--learn-line);border-radius:15px;background:var(--learn-panel);transition:.18s}.course-lesson>a:hover{border-color:color-mix(in srgb,var(--course-accent) 42%,transparent);transform:translateX(4px)}.course-lesson-number{font:18px ui-monospace,monospace;color:#566b82}.course-lesson-meta{display:flex;gap:6px;flex-wrap:wrap}.course-lesson-meta span{font:8px ui-monospace,monospace;letter-spacing:.08em;color:#7f93aa;text-transform:uppercase}.course-lesson h3{font-size:21px;margin:5px 0}.course-lesson p{font-size:12px;margin:0;max-width:760px}.course-lesson>a>b{font-size:11px;color:var(--course-accent);white-space:nowrap}.course-end{max-width:1160px;margin:0 auto 90px;padding:55px;border:1px solid var(--learn-line);border-radius:24px;text-align:center;background:linear-gradient(140deg,#0d1a28,#09131e)}.course-end h2{font-size:48px;margin:6px}.course-end p{max-width:650px;margin:0 auto 24px}

/* Lesson */
.reading-progress{position:fixed;top:0;left:0;z-index:100;width:0;height:2px;background:var(--course-accent,var(--learn-blue));box-shadow:0 0 16px color-mix(in srgb,var(--course-accent,var(--learn-blue)) 50%,transparent)}.lesson-shell{max-width:1540px;margin:auto}.lesson-hero{padding:72px clamp(22px,5vw,78px) 62px;display:grid;gap:38px;border-bottom:1px solid var(--learn-line)}.lesson-hero.layout-split,.lesson-hero.layout-cover{grid-template-columns:minmax(0,1.1fr) minmax(330px,.9fr);align-items:center}.lesson-hero.layout-cover .lesson-hero-image{order:2}.lesson-hero.layout-minimal{max-width:1100px}.lesson-hero-image{border-radius:22px;overflow:hidden;min-height:320px;max-height:520px;border:1px solid var(--learn-line)}.lesson-hero-image img{width:100%;height:100%;min-height:320px;max-height:520px;object-fit:cover}.lesson-breadcrumb{display:flex;gap:8px;align-items:center;flex-wrap:wrap;font:10px ui-monospace,monospace;color:#71849a;margin-bottom:22px}.lesson-breadcrumb a{color:var(--course-accent)}.lesson-hero-copy h1{font-size:clamp(48px,7vw,94px);line-height:.95;letter-spacing:-.06em;margin:0 0 20px}.lesson-summary{font-size:clamp(17px,1.6vw,21px);max-width:830px}.lesson-meta{display:flex;gap:7px;flex-wrap:wrap;margin-top:23px}.lesson-meta span{font:9px ui-monospace,monospace;letter-spacing:.08em;padding:6px 9px;border:1px solid var(--learn-line);border-radius:999px;color:#8fa2b9}.lesson-complete-button{margin-top:22px!important;background:transparent!important;border:1px solid color-mix(in srgb,var(--course-accent) 35%,transparent)!important;color:var(--course-accent)!important}.lesson-complete-button.completed{background:var(--course-accent)!important;color:#071019!important}.lesson-layout{display:grid;grid-template-columns:300px minmax(0,850px);gap:68px;justify-content:center;padding:56px clamp(20px,4vw,60px) 110px}.lesson-sidebar{position:sticky;top:96px;align-self:start;max-height:calc(100vh - 120px);overflow:auto;padding-right:12px;scrollbar-width:thin}.sidebar-title{padding-bottom:14px;border-bottom:1px solid var(--learn-line)}.sidebar-title span{display:block;font:8px ui-monospace,monospace;letter-spacing:.12em;color:var(--course-accent);margin-bottom:6px}.sidebar-title a{font-size:14px;font-weight:700}.sidebar-module{padding:17px 0;border-bottom:1px solid var(--learn-line)}.sidebar-module>b,.lesson-toc>b{display:block;font:9px ui-monospace,monospace;letter-spacing:.09em;color:#7e91a7;text-transform:uppercase;margin-bottom:7px}.sidebar-module>a{display:grid;grid-template-columns:8px 1fr auto;gap:8px;align-items:center;padding:7px 4px;color:#8597ac;font-size:11px;border-radius:8px}.sidebar-module>a i{width:4px;height:4px;border-radius:50%;background:#3f5369}.sidebar-module>a em{font:8px ui-monospace,monospace;font-style:normal;color:#53677e}.sidebar-module>a.active{color:#fff;background:#ffffff05}.sidebar-module>a.active i{background:var(--course-accent);box-shadow:0 0 10px var(--course-accent)}.lesson-toc{padding:20px 0;border-bottom:1px solid var(--learn-line)}.lesson-toc nav{display:grid;gap:2px}.lesson-toc a{font-size:11px;color:#7d90a7;padding:6px 0 6px 12px;border-left:1px solid #263a50}.lesson-toc a.active,.lesson-toc a:hover{color:#fff;border-color:var(--course-accent)}.sidebar-back{display:block;margin-top:17px;font-size:11px;color:#75889f}.lesson-content{min-width:0}.lesson-intro{position:relative;padding:30px 34px;margin-bottom:46px;border:1px solid var(--learn-line);border-radius:18px;background:linear-gradient(145deg,#102033,#0b1622)}.lesson-intro-mark{font:9px ui-monospace,monospace;letter-spacing:.12em;color:var(--course-accent);margin-bottom:12px}.lesson-prose{font-size:16px;line-height:1.82;color:#b7c4d4}.lesson-section-break{padding:54px 0 20px;margin-top:28px;border-top:1px solid var(--learn-line);scroll-margin-top:100px}.lesson-section-break:first-child{border-top:0}.lesson-section-break>span{font:9px ui-monospace,monospace;letter-spacing:.14em;color:var(--course-accent)}.lesson-section-break h2{font-size:clamp(34px,4.5vw,58px);margin:7px 0 10px}.lesson-section-break p{font-size:16px;max-width:760px}.lesson-block{position:relative;margin:24px 0;padding:26px 28px;border:1px solid var(--learn-line);border-radius:17px;background:#0b1621;scroll-margin-top:100px}.lesson-block-label{font:8px ui-monospace,monospace;letter-spacing:.14em;color:var(--course-accent);margin-bottom:12px}.lesson-block h3{font-size:25px;margin:0 0 13px}.block-paragraph{border-color:transparent;background:transparent;padding:11px 0}.block-callout{border-color:color-mix(in srgb,var(--course-accent) 28%,transparent);background:color-mix(in srgb,var(--course-accent) 6%,#0b1621)}.lesson-callout{font-size:18px;line-height:1.7;color:#d4deea}.lesson-divider{height:1px;background:var(--learn-line);margin:48px 0}.lesson-block figure{margin:0}.lesson-block figure img{width:100%;display:block;border-radius:13px;border:1px solid var(--learn-line);background:#04080d}.lesson-block figcaption,.media-caption{font-size:11px;color:#6f8299;margin-top:10px}.lesson-video-shell{border-radius:13px;overflow:hidden;border:1px solid var(--learn-line);background:#000}.lesson-video-shell video{display:block;width:100%;max-height:650px}.youtube-consent{min-height:330px;display:grid;place-content:center;justify-items:center;gap:10px;text-align:center;border:1px dashed #ffffff20;border-radius:14px;background:#07111b}.youtube-consent iframe{width:100%;aspect-ratio:16/9;border:0}.video-play{display:grid;place-items:center;width:60px;height:60px;border-radius:50%;background:#ffffff0a;color:var(--course-accent);font-size:22px}.pdf-shell{border:1px solid var(--learn-line);border-radius:14px;overflow:hidden;background:#fff}.pdf-frame{display:block;width:100%;height:min(75vh,780px);border:0}.lesson-block pre{max-width:100%;overflow:auto;margin:0;border-radius:12px;padding:20px;background:#03080d;border:1px solid #ffffff0e;color:#c7f7d6;font:13px/1.7 ui-monospace,SFMono-Regular,Consolas,monospace}.code-caption{display:flex;justify-content:flex-end;margin-bottom:-1px}.code-caption span{font:8px ui-monospace,monospace;letter-spacing:.1em;color:#6f8299}.code-copy{float:right;margin:0 0 8px!important;min-height:32px!important;padding:5px 9px!important;font-size:10px!important}.lesson-terminal{overflow:hidden;border:1px solid #ffffff13;border-radius:14px;background:#020705}.terminal-top{height:36px;display:flex;align-items:center;gap:6px;padding:0 13px;background:#0b1214;border-bottom:1px solid #ffffff10}.terminal-top i{width:8px;height:8px;border-radius:50%;background:#ffffff20}.terminal-top span{margin-left:8px;font:9px ui-monospace,monospace;color:#73877d}.lesson-terminal pre{border:0;border-radius:0;color:#92f5a7}.lesson-steps{list-style:none;padding:0;counter-reset:step}.lesson-steps li{display:grid;grid-template-columns:38px 1fr;gap:13px;padding:16px 0;border-top:1px solid var(--learn-line);counter-increment:step}.lesson-steps li:before{content:counter(step,decimal-leading-zero);font:11px ui-monospace,monospace;color:var(--course-accent)}.lesson-checklist{list-style:none;padding:0;display:grid;gap:8px}.lesson-checklist li{position:relative;padding:11px 12px 11px 38px;border:1px solid var(--learn-line);border-radius:10px;color:#b7c4d4}.lesson-checklist li:before{content:'✓';position:absolute;left:13px;color:var(--course-accent)}.lesson-table-wrap{overflow:auto;border:1px solid var(--learn-line);border-radius:12px}.lesson-table{width:100%;border-collapse:collapse;font-size:13px}.lesson-table th,.lesson-table td{padding:12px 14px;border-bottom:1px solid var(--learn-line);text-align:left}.lesson-table th{background:#ffffff04;color:#e2eaf5}.lesson-table td{color:#9dacc0}.lesson-faq{display:grid;gap:7px}.lesson-faq details{border:1px solid var(--learn-line);border-radius:11px;padding:13px 15px;background:#ffffff02}.lesson-faq summary{cursor:pointer;color:#d8e1ed}.lesson-faq p{font-size:13px}.lesson-tabs .tab-buttons{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px}.lesson-tabs .tab-buttons button{min-height:37px!important;padding:7px 11px!important;font-size:11px!important}.lesson-tabs .tab-buttons button.active{background:var(--course-accent)!important;color:#071019!important}.lesson-tabs [data-tab-panel]{padding:18px;border:1px solid var(--learn-line);border-radius:11px;color:#b5c3d4;line-height:1.7}.flashcard-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.flashcard{min-height:150px!important;padding:18px!important;display:grid!important;place-items:center!important;text-align:center!important;perspective:700px}.flashcard b{display:none;color:var(--learn-text)}.flashcard.flipped span{display:none}.flashcard.flipped b{display:block}.lesson-quiz{display:grid;gap:14px}.lesson-quiz fieldset{border:1px solid var(--learn-line);border-radius:13px;padding:18px}.lesson-quiz legend{padding:0 8px;color:#e2e9f3}.lesson-quiz label{display:flex;gap:10px;padding:8px;border-radius:8px;color:#9fb0c3}.lesson-quiz label:hover{background:#ffffff04}.lesson-quiz label input{width:auto}.lesson-quiz small{display:block;margin-top:9px}.quiz-ok{color:var(--learn-green)}.quiz-bad{color:#ff8a86}.resource-download{display:grid;grid-template-columns:80px 1fr auto;gap:15px;align-items:center;padding:17px;border:1px solid var(--learn-line);border-radius:12px;background:#ffffff03}.resource-download span{font:9px ui-monospace,monospace;color:var(--course-accent)}.resource-download em{font-style:normal;font-size:11px;color:#8498af}.demo-frame iframe{width:100%;min-height:520px;border:1px solid var(--learn-line);border-radius:12px;background:#fff}.demo-frame .academy-secondary{margin-top:10px}.mermaid-wrap{border:1px solid var(--learn-line);border-radius:14px;background:#07121c;overflow:hidden}.mermaid-render{min-height:220px;overflow:auto;padding:25px}.diagram-stage{width:max-content;min-width:100%;transition:transform .15s}.diagram-stage svg{max-width:none}.diagram-tools{display:flex;gap:4px;padding:8px;border-top:1px solid var(--learn-line)}.diagram-tools button{min-height:32px!important;padding:4px 9px!important;font-size:10px!important}.block-tools{padding:9px;border-top:1px solid var(--learn-line)}.mermaid-source{margin:0!important;border-radius:0!important}.code-lab{overflow:hidden;border:1px solid #ffffff15;border-radius:14px;background:#02070b}.code-lab-top{display:flex;justify-content:space-between;align-items:center;padding:9px 12px;border-bottom:1px solid #ffffff10}.code-lab-top span{font:9px ui-monospace,monospace;color:#7ee596}.code-lab textarea{display:block;width:100%;min-height:230px;border:0!important;border-bottom:1px solid #ffffff10!important;border-radius:0!important;background:#02070b!important;color:#bff7cc!important;padding:17px;font:13px/1.65 ui-monospace,monospace;resize:vertical}.runner-output{border:0!important;border-radius:0!important;border-bottom:1px solid #ffffff10!important;background:#06100a!important;min-height:70px}.runner-frame iframe{width:100%;min-height:260px;border:0;background:#071019}.lesson-sequence{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:65px}.lesson-sequence a{display:grid;gap:5px;padding:18px;border:1px solid var(--learn-line);border-radius:13px;background:#ffffff02}.lesson-sequence a span{font:8px ui-monospace,monospace;letter-spacing:.1em;color:var(--course-accent)}.lesson-sequence a b{font-size:13px}.sequence-next{text-align:right}.lesson-end{margin-top:32px;padding:60px 20px;text-align:center;border-top:1px solid var(--learn-line)}.lesson-end h2{font-size:45px;margin:7px 0 24px}.lesson-gate{max-width:760px;margin:100px auto;padding:50px;border:1px solid var(--learn-line);border-radius:24px;text-align:center}.gate-lock{margin:25px auto;padding:13px;border:1px solid #ffffff18;border-radius:11px;font:10px ui-monospace,monospace;color:#9fb1c5}.lesson-gate>a{margin:5px}

.learn-footer{max-width:1600px;margin:auto;padding:30px clamp(20px,5vw,80px);display:flex;gap:22px;justify-content:flex-end;align-items:center;border-top:1px solid var(--learn-line);font-size:11px;color:#788ba2}.learn-footer>span{margin-right:auto;font:9px ui-monospace,monospace;letter-spacing:.12em}.learn-footer a:hover{color:#fff}
@keyframes mapspin{to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){.map-orbit{animation:none}.course-card,.course-lesson>a,.academy-primary,.academy-secondary{transition:none}}
@media(max-width:1100px){.academy-hero{grid-template-columns:1fr}.academy-map{max-width:450px;justify-self:start}.course-grid,.lesson-library-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.method-grid{grid-template-columns:1fr 1fr}.method-grid article{border-bottom:1px solid var(--learn-line)}.course-hero{grid-template-columns:80px 1fr}.course-hero-aside{grid-column:1/-1;border-left:0;border-top:1px solid var(--learn-line);padding:24px 0 0;display:grid;grid-template-columns:repeat(2,1fr);gap:0 20px}.lesson-layout{grid-template-columns:240px minmax(0,1fr);gap:36px}.lesson-hero.layout-split,.lesson-hero.layout-cover{grid-template-columns:1fr}.lesson-hero.layout-cover .lesson-hero-image{order:0}}
@media(max-width:780px){.learn-nav{height:auto;min-height:64px;padding:12px 17px}.learn-nav nav{gap:11px}.learn-nav nav a:nth-child(n+3){display:none}.lesson-nav-title{display:none}.academy-hero{padding-top:75px}.academy-hero h1{font-size:56px}.academy-map{max-width:360px}.academy-stats{margin-top:40px}.course-grid,.lesson-library-grid,.learn-toolbar{grid-template-columns:1fr}.method-grid{grid-template-columns:1fr}.method-grid article{border-right:0}.course-hero{grid-template-columns:1fr;padding-top:55px}.course-hero-index{width:62px;height:62px}.course-hero-aside{grid-template-columns:1fr}.course-module>header{align-items:flex-start}.course-lesson{grid-template-columns:35px 1fr}.course-lesson>a{grid-template-columns:38px 1fr}.course-lesson>a>b{grid-column:2}.lesson-layout{display:block;padding-top:25px}.lesson-sidebar{position:static;max-height:none;padding:0 0 22px;margin-bottom:30px;border-bottom:1px solid var(--learn-line)}.lesson-course-index{display:none}.lesson-hero{padding-top:55px}.lesson-hero-copy h1{font-size:52px}.lesson-content{max-width:100%}.flashcard-grid{grid-template-columns:1fr}.lesson-sequence{grid-template-columns:1fr}.sequence-next{text-align:left}.learn-footer{flex-wrap:wrap;justify-content:flex-start}.learn-footer>span{width:100%}}
@media(max-width:520px){.academy-section,.academy-method{padding-left:17px;padding-right:17px}.academy-hero{padding-left:17px;padding-right:17px}.academy-hero h1{font-size:47px}.academy-map{display:none}.academy-stats{gap:14px}.academy-stats>div{padding-right:14px}.course-card>a{min-height:390px}.course-hero,.course-roadmap{padding-left:17px;padding-right:17px}.course-hero-copy h1{font-size:46px}.course-module>header h2{font-size:32px}.course-lesson>a{padding:15px}.course-lesson p{display:none}.lesson-hero,.lesson-layout{padding-left:17px;padding-right:17px}.lesson-hero-copy h1{font-size:44px}.lesson-block{padding:20px}.resource-download{grid-template-columns:1fr}.lesson-end h2{font-size:36px}}
.course-lock{width:38px;height:38px;display:grid;place-items:center;align-self:center;border:1px solid var(--learn-line);border-radius:50%;color:#586a80;font:12px ui-monospace,monospace}

/* Learning Studio · rich text + educational blocks */
.rich-text-content{min-width:0}.rich-text-content>*:first-child{margin-top:0}.rich-text-content>*:last-child{margin-bottom:0}.rich-text-content p{margin:.35em 0 1em}.rich-text-content h2,.rich-text-content h3,.rich-text-content h4,.rich-text-content h5,.rich-text-content h6{color:var(--learn-text);line-height:1.18;margin:1.25em 0 .55em}.rich-text-content h2{font-size:2em}.rich-text-content h3{font-size:1.55em}.rich-text-content h4{font-size:1.25em}.rich-text-content ul,.rich-text-content ol{padding-left:1.4em;margin:.7em 0 1.1em}.rich-text-content li{margin:.35em 0}.rich-text-content a{color:var(--course-accent);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}.rich-text-content blockquote{margin:1.1em 0;padding:14px 18px;border-left:3px solid var(--course-accent);border-radius:0 10px 10px 0;background:color-mix(in srgb,var(--course-accent) 7%,transparent);color:#d8e2ee}.rich-text-content code{padding:.08em .35em;border:1px solid #ffffff12;border-radius:5px;background:#02080d;color:#c7f7d6;font: .9em ui-monospace,SFMono-Regular,Consolas,monospace}.rich-text-content pre{white-space:pre-wrap}.rich-text-content kbd{display:inline-block;padding:.12em .42em;border:1px solid #ffffff25;border-bottom-width:2px;border-radius:5px;background:#111c29;color:#e4ebf4;font:.82em ui-monospace,monospace}.rich-text-content mark{padding:.06em .22em;border-radius:4px;background:#f3cf5b;color:#17130a}.rich-text-content hr{border:0;border-top:1px solid var(--learn-line);margin:1.7em 0}.rich-text-content .rt-badge{display:inline-block;padding:2px 7px;border:1px solid color-mix(in srgb,var(--course-accent) 45%,transparent);border-radius:999px;background:color-mix(in srgb,var(--course-accent) 10%,transparent);color:var(--course-accent);font-size:.82em}.rich-text-content .rt-spoiler{background:#d8e2ee;color:#d8e2ee;border-radius:3px;padding:0 .2em;transition:.15s}.rich-text-content .rt-spoiler:hover,.rich-text-content .rt-spoiler:focus{color:#09131e}.rich-text-content .rt-muted{color:#7f91a7}.rich-text-content .rt-lead{font-size:1.2em;line-height:1.6}.rich-text-content .align-center{text-align:center}.rich-text-content .align-right{text-align:right}.rich-text-content .align-justify{text-align:justify}.section-rich-copy{max-width:820px;color:#9fb0c2;line-height:1.75}
.learning-summary-card{padding:20px 22px;border:1px solid color-mix(in srgb,var(--course-accent) 30%,var(--learn-line));border-radius:13px;background:linear-gradient(135deg,color-mix(in srgb,var(--course-accent) 10%,#0b1621),#0b1621);font-size:17px;line-height:1.72}
.learning-tone-card{position:relative;padding:18px 20px 18px 52px;border:1px solid var(--learn-line);border-radius:13px;background:#0a141f;line-height:1.7}.learning-tone-card:before{position:absolute;left:17px;top:17px;display:grid;place-items:center;width:24px;height:24px;border-radius:50%;font:700 11px ui-monospace,monospace}.tone-info{border-color:#74a7ff3e}.tone-info:before{content:'i';background:#74a7ff20;color:#8ebcff}.tone-tip{border-color:#7ee5963e}.tone-tip:before{content:'✓';background:#7ee59620;color:#7ee596}.tone-warning{border-color:#f3cf5b45}.tone-warning:before{content:'!';background:#f3cf5b20;color:#f3cf5b}.tone-danger{border-color:#ff746f4a}.tone-danger:before{content:'!';background:#ff746f20;color:#ff8d88}
.learning-definition{padding:20px;border:1px solid #ffffff14;border-radius:13px;background:#ffffff025}.learning-definition>span{display:inline-block;margin-bottom:10px;color:var(--course-accent);font:9px ui-monospace,monospace;letter-spacing:.12em}
.learning-rich-list{list-style:none;padding:0;margin:0;display:grid;gap:9px}.learning-rich-list li{display:grid;grid-template-columns:28px 1fr;gap:11px;align-items:start;padding:12px 14px;border:1px solid var(--learn-line);border-radius:11px;background:#ffffff025;color:#b8c6d6}.learning-rich-list li>span{color:var(--course-accent);font:12px ui-monospace,monospace;padding-top:2px}.learning-rich-list.keypoints li{background:color-mix(in srgb,var(--course-accent) 4%,#0b1621)}
.learning-glossary{display:grid;gap:8px;margin:0}.learning-glossary>div{display:grid;grid-template-columns:minmax(130px,.35fr) 1fr;gap:18px;padding:13px 15px;border:1px solid var(--learn-line);border-radius:11px;background:#ffffff025}.learning-glossary dt{font-weight:700;color:#e2eaf5}.learning-glossary dd{margin:0;color:#9fb0c3;line-height:1.6}
.learning-timeline{list-style:none;margin:0;padding:0 0 0 23px;border-left:1px solid color-mix(in srgb,var(--course-accent) 35%,var(--learn-line));display:grid;gap:17px}.learning-timeline li{position:relative;padding:0 0 0 12px}.learning-timeline li:before{content:'';position:absolute;left:-29px;top:5px;width:10px;height:10px;border:2px solid #071019;border-radius:50%;background:var(--course-accent);box-shadow:0 0 0 2px color-mix(in srgb,var(--course-accent) 28%,transparent)}.learning-timeline li b{display:block;color:#e2eaf5;margin-bottom:4px}.learning-timeline li div{color:#9eafc1;line-height:1.6}
.learning-comparison{display:grid;gap:7px}.comparison-row{display:grid;grid-template-columns:1fr 1fr;gap:7px}.comparison-row>div{padding:13px 15px;border:1px solid var(--learn-line);border-radius:10px;background:#ffffff025;line-height:1.55}.comparison-row>div:first-child{border-left-color:var(--course-accent)}
.learning-columns{display:grid;grid-template-columns:repeat(var(--lesson-cols,2),minmax(0,1fr));gap:10px}.learning-columns>div{padding:17px;border:1px solid var(--learn-line);border-radius:11px;background:#ffffff025}
.learning-references{list-style:none;padding:0;margin:0;display:grid;gap:7px}.learning-references li{padding:10px 12px;border:1px solid var(--learn-line);border-radius:9px;background:#ffffff02}.learning-references a{color:#a9c8ff;text-decoration:none}.learning-references a:hover{text-decoration:underline}
@media(max-width:720px){.learning-glossary>div,.comparison-row,.learning-columns{grid-template-columns:1fr!important}.learning-tone-card{padding-left:48px}}
.rich-text-content .rt-pill{display:inline-block;padding:.08em .55em;border-radius:999px;background:#ffffff0a;border:1px solid #ffffff16}.rich-text-content .rt-box{display:inline-block;padding:.2em .45em;border:1px solid var(--learn-line);border-radius:6px;background:#ffffff035}