@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/fonts/font-0.ttf) format('truetype');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(/fonts/font-1.ttf) format('truetype');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(/fonts/font-2.ttf) format('truetype');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(/fonts/font-3.ttf) format('truetype');
}
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/fonts/font-4.ttf) format('truetype');
}
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(/fonts/font-5.ttf) format('truetype');
}
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(/fonts/font-6.ttf) format('truetype');
}
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(/fonts/font-7.ttf) format('truetype');
}

:root{--purple:#7255d9;--purple-dark:#5436b7;--ink:#242831;--muted:#717580;--border:#e7e8ed;--paper:#fbfcfd;--lavender:#f1edff;--font:'DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;--display:'Space Grotesk',var(--font)}
*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--paper);font-family:var(--font);font-size:16px;-webkit-font-smoothing:antialiased}button,input,select{font:inherit}button,a,input,select{ -webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer;color:inherit}a{color:inherit;text-decoration:none}button{border:0;background:none}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #9478ee;outline-offset:4px}button:disabled{cursor:default;opacity:.5}h1,h2,h3,h4,p{margin:0}p{line-height:1.65}.icon{width:21px;height:21px;flex-shrink:0;vertical-align:middle}.skip{position:fixed;z-index:100;top:-80px;padding:14px;background:white}.skip:focus{top:8px}.sidebar{width:242px;position:fixed;top:0;bottom:0;left:0;background:white;border-right:1px solid var(--border);display:flex;flex-direction:column;padding:32px 20px 20px;z-index:20}.brand{display:flex;gap:10px;align-items:center;padding:0 12px}.brandmark{height:39px;width:39px;display:grid;place-items:center;color:white;background:var(--purple);border-radius:11px}.brandmark .icon{width:26px;height:26px}.brand>span:last-child{font-family:var(--display);font-size:22px;font-weight:600;line-height:1.1;letter-spacing:-.8px}.brand b{font-weight:400;color:var(--purple)}.brand small{display:block;font-family:var(--font);font-size:11px;letter-spacing:.6px;color:#8a8b96;margin-top:7px;font-weight:500}.nav-label{font-size:10px;letter-spacing:1.5px;font-weight:700;color:#9597a2;margin:45px 12px 17px}.nav-item{display:flex;align-items:center;gap:12px;min-height:46px;margin:5px 0;padding:10px 12px;color:#676a77;font-size:14px;font-weight:550;border-radius:8px;transition:.15s}.nav-item .icon{width:19px;height:19px}.nav-item:hover{background:#f7f5fc}.nav-item.active{background:var(--lavender);color:var(--purple-dark)}.nav-new{font-size:9px;letter-spacing:.5px;background:#edf6e9;color:#688655;padding:4px;border-radius:4px;margin-left:auto;white-space:nowrap}.sidebar-bottom{margin-top:auto}.sidebar-note{padding:19px 14px;border:1px solid #eeebf7;border-radius:10px;background:#fbfaff;margin-top:35px}.sidebar-note>.icon{color:var(--purple);display:block;margin-bottom:11px}.sidebar-note strong{font-size:13px}.sidebar-note p{font-size:12px;color:#85828f;white-space:pre-line;margin-top:7px;line-height:1.7}.tapeseek-link{display:flex;align-items:center;gap:8px;font-size:11px;margin:22px 2px 18px;color:#676779}.tapeseek-link .icon{width:15px}.tapeseek-link .icon:last-child{width:12px;margin-left:auto}.independent{border-top:1px solid var(--border);padding:16px 3px 0;font-size:10px;line-height:1.9;color:#9a9ba4}.workspace{margin-left:242px}.topbar{height:77px;border-bottom:1px solid var(--border);background:white;display:flex;align-items:center;justify-content:space-between;padding:0 42px;gap:20px}.breadcrumb{font-size:12px;color:#8b8d98;display:flex;gap:16px;align-items:center}.breadcrumb strong{font-weight:500;color:#555963}.breadcrumb>span{color:#c3c5cc}.top-actions{display:flex;gap:23px;align-items:center}.beginner-badge{font-size:11px;color:#8b8995;display:flex;align-items:center;gap:7px}.beginner-badge .icon{height:14px;width:14px;color:#9484b5}.language{display:flex;align-items:center;gap:7px;font-size:12px}.language .icon{height:16px;width:16px}.github-link{padding-left:18px;border-left:1px solid var(--border)}.github-link .icon{width:18px}.icon-button{display:none}main{max-width:1440px;padding:42px 42px 30px;margin:auto;min-height:calc(100vh - 150px)}.eyebrow{font-size:10px;font-weight:700;color:#8b849e;letter-spacing:1.8px}.page-heading h1{font-family:var(--display);font-size:35px;font-weight:600;letter-spacing:-1.25px;line-height:1.2;margin:13px 0 12px}.page-heading p{font-size:14px;color:var(--muted)}.overview-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}.edition{font-family:monospace;font-size:9px;letter-spacing:1px;color:#99939f;padding-top:15px}.edition>span{display:inline-block;margin-left:12px;padding:5px 7px;border:1px solid var(--border);border-radius:5px;font-size:12px}.edition small{display:block;font-family:var(--font);font-size:11px;text-align:right;margin-top:12px;letter-spacing:0}.start-grid{display:grid;grid-template-columns:1.02fr 1fr;gap:22px}.welcome-card{background:var(--lavender);border:1px solid #e6defe;border-radius:13px;padding:28px 30px}.pill{display:inline-flex;align-items:center;gap:6px;font-size:9px;font-weight:700;letter-spacing:1.3px;color:#7358b5;background:#e7dffb;padding:5px 9px;border-radius:5px}.pill .icon{width:11px;height:11px}.welcome-card h2{font-family:var(--display);font-size:30px;line-height:1.23;letter-spacing:-.8px;font-weight:500;margin-top:17px}.welcome-card p{font-size:13px;color:#817490;max-width:340px;margin:13px 0 20px}.primary,.secondary{display:inline-flex;gap:9px;justify-content:center;align-items:center;border-radius:7px;padding:12px 17px;font-size:12px;font-weight:600}.primary{background:var(--purple);color:white;box-shadow:0 3px 5px #624aa017}.primary:hover{background:var(--purple-dark)}.primary .icon{width:16px;height:16px}.secondary{border:1px solid var(--border);background:white;white-space:nowrap}.secondary:hover{border-color:var(--purple);color:var(--purple)}.welcome-meta{display:flex;gap:18px;font-size:10px;margin-top:20px;color:#94859f}.welcome-meta span{display:flex;align-items:center;gap:5px}.welcome-meta .icon{width:12px;height:12px}.big-picture{background:white;border:1px solid var(--border);border-radius:13px;display:flex;flex-direction:column;overflow:hidden}.card-kicker{display:flex;justify-content:space-between;gap:10px;margin:25px 25px 0;color:#76767d;font-size:10px;font-weight:700;letter-spacing:1.2px}.card-kicker>span{font-weight:400;letter-spacing:0;font-size:10px;color:#a0a0a6}.mini-flow{position:relative;display:grid;grid-template-columns:1fr 20px 1fr;grid-template-rows:105px 94px;gap:16px 8px;flex:1;margin:20px 35px 17px;background-image:radial-gradient(#dbdce4 .75px,transparent .75px);background-size:13px 13px}.flow-node{border:1px solid #dedbea;border-radius:9px;background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;position:relative;z-index:2;min-width:0;box-shadow:0 3px 6px #25213b04}.flow-node:hover{border-color:var(--purple);transform:translateY(-2px)}.flow-node strong{font-size:12px;font-weight:600}.flow-node small{font-size:9px;color:#97929e}.flow-node .icon{color:#9b8bb5;width:23px;height:23px}.parts{grid-area:1/1}.circuits{grid-area:1/3}.flow-plus{display:flex;align-items:center;justify-content:center;color:#aaa2b6}.mining{grid-area:2/1;margin:8px 0 0;background:#fffef9;border-color:#ece6d7}.mining .icon{color:#bfa36a}.websites{grid-area:2/3;margin:8px 0 0;background:#f8fcfb;border-color:#d9e8e2}.websites .icon{color:#73a78e}.branch-line{position:absolute;left:23%;right:23%;top:53%;height:13px;border-top:1px solid #d3ccdF;border-left:1px solid #d3ccdf;border-right:1px solid #d3ccdf}.flow-line{position:absolute;left:76%;top:42%;height:24px;border-left:1px solid #d3ccdf}.picture-caption{border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;gap:12px;padding:16px 20px;font-size:9px;color:#92929c;background:#fefefe}.text-button{font-size:11px;font-weight:600;color:var(--purple);display:inline-flex;align-items:center;gap:8px;white-space:nowrap}.text-button:hover{text-decoration:underline}.progress-strip{display:flex;align-items:center;gap:16px;background:white;border:1px solid var(--border);border-radius:10px;padding:17px 21px;margin-top:22px}.progress-icon{width:37px;height:37px;display:grid;place-items:center;border-radius:9px;background:#f5f2fd;color:#9e8cbc}.progress-icon .icon{width:19px}.progress-strip>div:nth-child(2){display:flex;flex-direction:column;gap:5px;min-width:220px}.progress-strip strong{font-size:12px;font-weight:600}.progress-strip>div:nth-child(2)>span{font-size:10px;color:#96939d}.progress-track{height:6px;background:#f1edf9;border-radius:10px;flex:1;overflow:hidden;margin-left:20px}.progress-track>span{display:block;height:100%;background:var(--purple);transition:width .3s}.progress-count{font-family:var(--display);font-size:14px;font-weight:600;white-space:nowrap}.progress-count>span{font-family:var(--font);font-weight:400;font-size:10px;color:#a09ba8}.progress-strip>.text-button{padding-left:16px;border-left:1px solid var(--border)}.section-heading{display:flex;align-items:center;justify-content:space-between;margin:30px 0 18px}.section-heading h2{font-family:var(--display);font-size:22px;font-weight:500;letter-spacing:-.5px;margin-top:7px}.count-badge{font-size:10px;border-radius:5px;background:var(--lavender);padding:3px 5px}.lesson-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.lesson-card{display:flex;flex-direction:column;align-items:flex-start;text-align:left;background:white;border:1px solid var(--border);border-radius:11px;padding:20px 22px 0;transition:transform .15s,border-color .15s}.lesson-card:hover{transform:translateY(-3px);border-color:#beaee8}.lesson-card-top{display:flex;align-items:center;justify-content:space-between;width:100%;margin-bottom:19px}.tile-icon{height:38px;width:38px;border-radius:9px;display:grid;place-items:center;color:#9279b8;background:#f1ebf9}.tone-1 .tile-icon{background:#eaf2fa;color:#7297c1}.tone-2 .tile-icon{background:#eaf4ee;color:#6ba284}.lesson-number{color:#c8c6d0;font-family:var(--display);font-size:23px;font-weight:400}.lesson-category{font-size:9px;font-weight:700;letter-spacing:1.2px;color:#9b95a9}.lesson-card h3{font-size:17px;font-weight:600;letter-spacing:-.25px;margin:8px 0}.lesson-card p{font-size:12px;color:#96909e;line-height:1.65;min-height:43px}.lesson-meta{display:flex;justify-content:space-between;width:100%;padding:15px 0;border-top:1px solid #f0edf3;margin-top:15px;color:#9a95a2;font-size:10px}.lesson-meta>span{display:flex;align-items:center;gap:5px}.lesson-meta .icon{height:12px;width:12px}.bottom-grid{display:grid;grid-template-columns:1.85fr 1fr;gap:20px;margin-top:26px}.lab-teaser{display:flex;align-items:center;gap:15px;padding:19px;border:1px solid var(--border);background:white;border-radius:10px}.lab-icon{color:#a996c9;background:#f5f0fb;border-radius:10px;display:grid;place-items:center;min-width:40px;height:45px}.lab-teaser .eyebrow{font-size:8px;letter-spacing:1.2px}.lab-teaser h3{font-size:14px;margin-top:6px;font-weight:600;letter-spacing:-.15px}.lab-teaser p{font-size:10px;color:#a09aa8;margin-top:7px}.lab-teaser .secondary{margin-left:auto;font-size:10px;padding:11px}.note-card{display:flex;align-items:flex-start;gap:12px;padding:18px 5px 10px 10px}.note-card>.icon{color:#a6a0ae;width:18px;height:18px}.note-card strong{font-size:11px;color:#7c7588;font-weight:500}.note-card p{font-size:10px;color:#a39ba8;margin-top:8px;line-height:1.8}footer{max-width:1440px;margin:auto;padding:19px 42px 24px;display:flex;align-items:center;justify-content:space-between;gap:20px;color:#aaa4b0;font-size:10px}footer a{text-decoration:underline;text-underline-offset:3px}
@media(min-width:1500px){main{padding-top:48px}.welcome-card{padding:36px}.welcome-card h2{font-size:36px}.welcome-card p{font-size:15px}.mini-flow{margin:24px 58px;grid-template-rows:120px 105px}.lesson-card{padding:26px 28px 0}.lesson-card p{font-size:14px}.lesson-card h3{font-size:20px}.lesson-meta{font-size:12px}.lab-teaser h3{font-size:16px}.lab-teaser p{font-size:12px}}
@media(max-width:1200px){.sidebar{width:215px;padding-left:15px;padding-right:15px}.workspace{margin-left:215px}main{padding:32px 28px}.topbar{padding:0 28px}.edition{display:none}.welcome-card{padding:25px}.welcome-card h2{font-size:27px}.mini-flow{margin:18px 25px}.picture-caption{font-size:8px}.bottom-grid{grid-template-columns:1fr}.note-card{padding:5px}.progress-track{margin-left:0}.progress-strip>div:nth-child(2){min-width:180px}.top-actions{gap:14px}.beginner-badge{display:none}.lesson-card{padding:18px 18px 0}}
@media(max-width:950px){.sidebar{width:190px;padding-left:10px;padding-right:10px}.workspace{margin-left:190px}.brand{padding:0 6px;gap:8px}.brand>span:last-child{font-size:19px}.brandmark{width:33px;height:33px}.nav-item{font-size:12px}.nav-new{display:none}.start-grid{grid-template-columns:1fr}.big-picture{display:none}.welcome-card h2 br{display:none}.welcome-card p{max-width:100%}.welcome-card h2{font-size:30px}.lesson-grid{gap:10px}.lesson-card{padding:16px 13px 0}.lesson-card h3{font-size:15px}.progress-strip{gap:12px;padding:15px}.progress-strip>.text-button{display:none}.progress-track{min-width:30px}.breadcrumb{font-size:11px}.page-heading h1{font-size:30px}.sidebar-note{padding:13px 10px}.tapeseek-link{font-size:10px}}
@media(max-width:700px){.sidebar{transform:translateX(-100%);width:242px;transition:.2s;box-shadow:15px 0 50px #25174320}.nav-open .sidebar{transform:translateX(0)}.nav-open .workspace:after{content:'';position:fixed;inset:65px 0 0 242px;background:#27153e40;z-index:10;pointer-events:none}.workspace{margin:0}.topbar{height:65px;padding:0 20px;gap:12px;position:sticky;top:0;z-index:9}.icon-button{display:grid;place-items:center;padding:3px}.breadcrumb{font-size:12px;margin-right:auto;gap:0}.breadcrumb>span,.breadcrumb>strong{display:none}.top-actions{gap:12px}.github-link{display:none}main{padding:27px 20px 20px}.page-heading h1{font-size:29px;line-height:1.2}.page-heading p{font-size:14px}.eyebrow{font-size:9px;letter-spacing:1.3px}.overview-heading{margin-bottom:24px}.welcome-card{padding:25px 23px}.welcome-card h2{font-size:28px}.welcome-card h2 br{display:block}.welcome-card p{font-size:14px}.primary{font-size:14px}.welcome-meta{font-size:11px;gap:13px}.pill{font-size:10px}.progress-strip{flex-wrap:wrap;gap:13px}.progress-strip>div:nth-child(2){flex:1;min-width:180px}.progress-strip strong{font-size:14px}.progress-strip>div:nth-child(2)>span{font-size:12px}.progress-track{order:4;flex-basis:70%;margin-left:0}.progress-count{order:5;font-size:16px}.progress-count>span{font-size:12px}.lesson-grid{grid-template-columns:1fr;gap:13px}.lesson-card{position:relative;padding:20px 20px 0 80px;min-height:168px}.lesson-card-top{position:absolute;top:22px;left:18px;width:44px;display:block}.lesson-number{display:block;text-align:center;margin-top:22px;font-size:20px}.tile-icon{width:40px;height:40px}.lesson-category{font-size:10px}.lesson-card h3{font-size:19px}.lesson-card p{font-size:14px;min-height:0}.lesson-meta{font-size:12px}.lesson-meta .icon{height:14px;width:14px}.text-button{font-size:12px}.section-heading h2{font-size:22px}.lab-teaser{flex-wrap:wrap;padding:20px;gap:13px}.lab-teaser>div:nth-child(2){flex:1}.lab-teaser .eyebrow{font-size:9px}.lab-teaser h3{font-size:16px;line-height:1.5}.lab-teaser p{font-size:12px}.lab-teaser .secondary{font-size:13px;margin-left:53px}.note-card strong{font-size:13px}.note-card p{font-size:12px}.note-card{padding:2px 0}.bottom-grid{gap:20px}footer{padding:15px 20px 24px;flex-direction:column;align-items:flex-start;gap:10px;font-size:11px;line-height:1.7}.nav-item{font-size:14px}.sidebar-note p{font-size:12px}.tapeseek-link{font-size:11px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
/* Learning surfaces */
.page-heading{margin-bottom:28px}.overview-heading .page-heading{margin-bottom:0}.path-summary{display:flex;flex-wrap:wrap;gap:24px;font-size:13px;color:#847c92;margin-bottom:32px}.path-summary span{display:flex;align-items:center;gap:8px}.path-summary .icon{width:16px;height:16px}.chapters{display:grid;grid-template-columns:1fr 1fr;gap:24px}.chapter{border:1px solid var(--border);border-radius:12px;background:white;overflow:hidden}.chapter-heading{display:flex;gap:15px;align-items:center;padding:23px;background:#f6f3fd;border-bottom:1px solid #ede9f3}.chapter:nth-child(2) .chapter-heading{background:#f9f5ea}.chapter:nth-child(3) .chapter-heading{background:#edf6f1}.chapter:nth-child(4) .chapter-heading{background:#edf3fb}.chapter-number{font-family:var(--display);font-size:31px;color:#b2a0ce}.chapter h2{font-size:19px;font-weight:550;letter-spacing:-.4px}.chapter-heading p{font-size:12px;color:#8f829e;margin-top:5px}.chapter-count{margin-left:auto;font-size:12px;color:#958a9e;white-space:nowrap}.path-lesson{display:flex;align-items:center;gap:12px;padding:20px;border-bottom:1px solid #efedf3}.path-lesson:last-child{border-bottom:0}.path-lesson:hover{background:#fcfaff}.path-status{width:30px;height:30px;flex-shrink:0;display:grid;place-items:center;border:1px solid #e9e4f0;border-radius:50%;color:#a99cb9;font-size:11px}.path-status.done{color:#548d69;background:#eef7f1;border-color:#d6eadc}.path-status .icon{width:15px;height:15px}.path-lesson h3{font-size:15px;font-weight:600;margin-bottom:5px}.path-lesson p{font-size:12px;color:#96909d;line-height:1.55}.duration{white-space:nowrap;font-size:11px;color:#aaa1b4;margin-left:auto}.info-banner{display:flex;align-items:center;gap:15px;padding:22px;border:1px solid #e5e0ed;background:#f7f4fd;border-radius:10px;margin-top:28px;color:#8b7e9f}.info-banner>.icon{width:24px;height:24px}.info-banner p{font-size:14px;line-height:1.7}.info-banner a{text-decoration:underline}.lesson-layout{display:grid;grid-template-columns:minmax(0,780px) 230px;gap:55px;justify-content:center}.reading{min-width:0}.back-link{font-size:12px;color:#9184a2;text-decoration:underline;text-underline-offset:4px}.lesson-heading{margin:28px 0}.lesson-heading h1{font-family:var(--display);font-size:39px;font-weight:500;letter-spacing:-1px;margin:12px 0;line-height:1.2}.lesson-heading>p{font-size:17px;color:#8c8198}.reading-meta{display:flex;gap:25px;color:#a49aaa;font-size:11px;margin-top:23px}.reading-meta span{display:flex;align-items:center;gap:6px}.reading-meta .icon{width:13px;height:13px}.takeaway{padding:23px 25px;background:var(--lavender);border:1px solid #e6dcfa;border-radius:10px;margin-bottom:38px}.takeaway>span{display:flex;align-items:center;gap:7px;color:#8971b2;font-size:10px;font-weight:700;letter-spacing:1.4px}.takeaway .icon{width:15px;height:15px}.takeaway p{font-size:17px;color:#64517d;margin-top:10px;line-height:1.7}.lesson-section{position:relative;margin:33px 0}.section-index{display:block;font-size:11px;color:#b2a0cb;font-family:monospace;letter-spacing:1px;margin-bottom:10px}.lesson-section h2{font-family:var(--display);font-size:24px;font-weight:500;letter-spacing:-.5px;margin-bottom:14px}.lesson-section p{font-size:16px;color:#77717f;margin:12px 0;line-height:1.9}.try-section{margin:35px 0;padding:24px;border:1px solid #dde9e2;border-radius:12px;background:#f7fbf8}.try-section .section-heading{margin:0 0 15px}.try-section h2{font-size:20px;margin:0}.try-section .icon{color:#7e9c8a}.try-section>p{font-size:14px;color:#81968a;margin-bottom:17px}.check-row{display:flex;align-items:flex-start;gap:11px;font-size:15px;line-height:1.7;padding:11px 0;cursor:pointer}.check-row input{accent-color:var(--purple);width:17px;height:17px;flex-shrink:0;margin:5px 0 0}.check-row input:checked+span{color:#8c9390}.try-section 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/* Readability: give instructional copy priority over decorative metadata. */
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