.screen-example{display:grid;grid-template-columns:minmax(150px,230px) 1fr;gap:20px;align-items:start;margin:24px 0;padding:20px;background:#151519;border-radius:10px}.screen-example img{display:block;max-width:100%;height:auto;border-radius:10px}.screen-example figcaption{font-size:14px;color:#c3c3cd}@media(max-width:550px){.screen-example{grid-template-columns:1fr}.screen-example img{max-width:250px;margin:auto}}

:root{--bg:#0e0e10;--card:#1c1c22;--fg:#fff;--dim:#c3c3cd;--orange:#f08230;--line:#383841}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:94px}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:#ffa15a}a:hover{text-decoration:underline}button,input{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #ffd08a;outline-offset:4px}.skip{position:absolute;top:-70px;left:16px;background:#fff;color:#111;padding:12px;z-index:10}.skip:focus{top:12px}.bar{border-bottom:1px solid var(--line);background:rgba(14,14,16,.97);padding:16px max(20px,calc((100vw - 1160px)/2));display:flex;gap:20px;justify-content:space-between;align-items:center;flex-wrap:wrap}.brand{font-size:20px;font-weight:800;color:#fff;text-decoration:none}.bar nav{display:flex;gap:22px;flex-wrap:wrap;font-size:14px}.hero{max-width:1160px;margin:auto;padding:64px 24px 38px;display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:center}.eyebrow{color:#ffa15a;letter-spacing:.14em;text-transform:uppercase;font-size:12px;font-weight:800}h1{font-size:clamp(38px,6vw,70px);line-height:1.04;letter-spacing:-.04em;margin:16px 0 22px}h1 span{color:var(--orange)}h2{font-size:clamp(25px,3vw,34px);line-height:1.2;margin:12px 0 18px}h3{font-size:20px;margin:12px 0 6px}.lead{font-size:19px;color:var(--dim);max-width:640px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 18px;border:1px solid var(--line);border-radius:9px;font-weight:700;color:#fff;text-decoration:none;background:var(--card)}.btn.primary{background:var(--orange);border-color:var(--orange);color:#101012}.meta{font-size:14px;color:var(--dim)}.visual{background:linear-gradient(145deg,#26262d,#151519);border:1px solid var(--line);border-radius:20px;padding:26px}.visual ol{list-style:none;padding:0;margin:22px 0 0}.visual li{border-top:1px solid var(--line);padding:12px 0;display:flex;gap:16px}.visual strong{color:#ffa15a}.notice{max-width:1112px;margin:0 auto 36px;border-left:4px solid var(--orange);background:#252019;padding:20px 24px;color:#ede5db}.notice p{margin:5px 0}.layout{max-width:1160px;margin:auto;padding:0 24px 60px;display:grid;grid-template-columns:250px minmax(0,1fr);gap:38px}.rail{position:sticky;top:24px;align-self:start;background:var(--card);border:1px solid var(--line);padding:20px;border-radius:12px}.rail ol{padding-left:22px;font-size:14px}.rail li{margin:10px 0}.rail a{text-decoration:none;color:var(--dim)}.rail a:hover{color:#fff}.progress-label{font-size:14px;color:var(--dim)}progress{width:100%;height:10px;accent-color:var(--orange)}.lesson{margin-bottom:22px;padding:28px;border:1px solid var(--line);background:var(--card);border-radius:14px;scroll-margin-top:24px}.lesson p{color:var(--dim)}.lesson ol{padding-left:24px}.lesson li{padding:0 0 14px 7px;color:var(--dim)}.tag{display:inline-block;padding:4px 9px;border-radius:4px;border:1px solid #765228;color:#ffd08a;font-size:12px;font-weight:800;margin-left:8px}.exercise{background:#252831;padding:16px;border-radius:9px;margin:18px 0}.exercise p{margin:6px 0}.evidence{border-left:2px solid #666676;padding-left:14px;color:var(--dim);font-size:14px}.complete{display:flex;gap:12px;align-items:flex-start;margin-top:22px;padding-top:18px;border-top:1px solid var(--line);font-size:14px}.complete input{width:20px;height:20px;accent-color:var(--orange);flex-shrink:0;margin-top:3px}.quiz fieldset{border:1px solid var(--line);border-radius:9px;margin:20px 0;padding:18px}.quiz legend{font-weight:700;padding:0 5px}.quiz label{display:flex;align-items:flex-start;gap:10px;padding:10px 0;cursor:pointer;color:var(--dim)}.quiz input{margin-top:6px;accent-color:var(--orange)}.feedback{font-size:14px}.feedback.correct{color:#9de5b8}.feedback.incorrect{color:#ffd08a}.quiet{background:none;border:0;color:#ffad6d;text-decoration:underline;padding:8px 0}.links li{padding-bottom:8px}footer{border-top:1px solid var(--line);padding:32px max(24px,calc((100vw - 1112px)/2));color:var(--dim);font-size:13px}footer a{color:#ffad6d}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}@media(max-width:800px){.hero{grid-template-columns:1fr;gap:24px;padding-top:38px}.layout{grid-template-columns:1fr;gap:20px}.rail{position:static}.rail ol{columns:2}.notice{margin:0 24px 26px}.lesson{padding:22px}.bar{padding:16px 24px}}@media(max-width:420px){.rail ol{columns:1}.actions .btn{width:100%}body{font-size:15px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media print{body{background:#fff;color:#111}.bar,.rail,.actions,.complete,.quiz button{display:none}.hero,.layout{display:block;padding:0}.visual{display:none}.lesson,.notice{break-inside:avoid;background:#fff;color:#111;border-color:#aaa}.lesson p,.lesson li,.evidence,.lead,.meta{color:#222}.exercise{background:#f3f3f3}.eyebrow,a{color:#8c3e00}}