.sh-lesson{--sh-line:#293c4c}.sh-lesson p{line-height:1.85}.sh-hero{padding-block:44px 32px}.sh-hero h1{font-size:clamp(34px,5vw,60px);line-height:1.2;max-width:850px;margin-block:18px}.sh-lead{font-size:clamp(18px,2.1vw,23px);max-width:820px;color:#c7d6e1}.sh-primer{display:grid;grid-template-columns:1.1fr 1fr;align-items:center;gap:40px;padding:28px;border:1px solid var(--sh-line);border-radius:18px;background:#101c29;margin-block:20px 50px}.sh-primer h2,.sh-key h2{font-size:26px;line-height:1.4}.sh-tag{color:#baff68;font:700 15px monospace}.sh-volume-demo>div{margin-block:20px}.sh-volume-demo i{display:block;height:25px;border-radius:3px;background:#baff68;margin-bottom:8px}.sh-volume-demo span{font-size:15px;color:#cbd8df}.sh-overview{margin-bottom:40px}.sh-choices{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.sh-choices a{display:flex;gap:12px;align-items:center;padding:18px;border:1px solid var(--sh-line);border-radius:14px;background:#101923}.sh-choices a:hover{border-color:var(--shape-color)}.sh-choices svg{width:66px;flex:none}.sh-choices strong{font:700 36px/1.3 Arial;color:var(--shape-color);display:block}.sh-choices span{font-size:14px;line-height:1.5;display:block;color:#c0ced8}.sh-key{border-inline-start:3px solid #73d4ef;padding:10px 24px;margin-block:20px 60px}.sh-key p{max-width:960px}.sh-section{padding-block:44px 60px;border-top:1px solid var(--sh-line);scroll-margin-top:100px}.sh-heading{display:flex;gap:24px;align-items:center;margin-bottom:36px}.sh-heading h2{font-size:clamp(26px,3.8vw,43px);line-height:1.35;margin:6px 0 12px}.sh-heading p{max-width:850px;margin:0}.sh-letter{display:grid;place-items:center;width:108px;height:122px;flex:none;font:700 80px/1 Arial;color:var(--shape-color);background:#101e2b;border-radius:18px;border:1px solid var(--sh-line)}.sh-lesson h3{font-size:25px;line-height:1.5;margin:16px 0 8px}.sh-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-block:24px}.sh-step{margin:0;background:#101b27;border:1px solid var(--sh-line);border-radius:16px;overflow:hidden}.sh-step figcaption{display:flex;align-items:center;gap:12px;padding:18px;min-height:90px}.sh-step-number{display:grid;place-items:center;background:var(--shape-color);color:#0b1420;font-weight:700;border-radius:50%;height:30px;width:30px;flex:none}.sh-step h4{font-size:17px;line-height:1.5;margin:0}.sh-step svg{width:100%;height:auto;display:block}.sh-step p{padding:16px 18px;margin:0;color:#bacbd8;font-size:16px}.sh-take{border-inline-start:3px solid var(--shape-color);padding:14px 20px;background:#14212c;border-radius:8px}.sh-setup{margin-top:36px;padding:30px;background:#101a25;border:1px solid var(--sh-line);border-radius:20px}.sh-setup>h3{font-size:clamp(24px,3vw,34px)}.sh-setup>p{color:#bdcdd8}.sh-walkthrough{display:grid;grid-template-columns:1fr 1.1fr;gap:28px;align-items:start;margin-block:26px}.sh-walkthrough figure{margin:0}.sh-walkthrough svg{display:block;width:100%;height:auto;border:1px solid var(--sh-line);border-radius:12px}.sh-walkthrough figcaption{font-size:14px;color:#b7c8d5;line-height:1.8;padding-top:12px}.sh-actions{list-style:none;padding:0;margin:0;display:grid;gap:24px}.sh-actions li{display:flex;gap:12px}.sh-actions h4{font-size:17px;margin:0 0 8px}.sh-actions p{font-size:16px;margin:0;color:#c6d5e0}.sh-dot{width:30px;height:30px;display:grid;place-items:center;border-radius:50%;font-weight:700;color:#09121c;flex:none}.sh-dot-0{background:#ffd089}.sh-dot-1{background:#62b8ff}.sh-dot-2{background:#baff68}.sh-stop{border-inline-start:3px solid #ff8181;padding:14px 18px;background:#281d25;border-radius:8px}.sh-stop p{margin:6px 0 0}.sh-comparison{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:24px}.sh-comparison>div{padding:18px;border:1px solid #4b343b;border-radius:12px}.sh-comparison>div+div{border-color:#37513b;background:#13231d}.sh-comparison h4{font-size:17px;margin:0 0 8px}.sh-comparison p{margin:0;font-size:16px}.sh-skip{font-size:15px;color:#f1d7a6!important}.sh-end{padding-block:40px 70px;border-top:1px solid var(--sh-line)}.sh-check{border:1px solid var(--sh-line);padding:22px;border-radius:14px;margin-block:28px}.sh-check summary{cursor:pointer;color:#baff68;min-height:44px}.sh-check details p{background:#152a23;padding:18px;border-radius:10px}.sh-lesson svg{direction:ltr}.sh-lesson .micro{font-size:14px;color:#a6bbc9}@media(max-width:900px){.sh-choices{grid-template-columns:1fr 1fr}.sh-steps{grid-template-columns:1fr}.sh-step{max-width:550px;width:100%;margin-inline:auto}.sh-step figcaption{min-height:auto}.sh-step svg{max-height:340px}.sh-walkthrough{grid-template-columns:1fr}.sh-walkthrough figure{max-width:500px;width:100%;margin-inline:auto}.sh-primer{grid-template-columns:1fr;gap:12px}.sh-primer p{margin-bottom:0}}@media(max-width:560px){.sh-lesson .wrap{width:calc(100% - 32px)}.sh-primer{padding:22px}.sh-heading{align-items:flex-start;gap:14px}.sh-letter{width:64px;height:78px;font-size:52px}.sh-heading h2{font-size:26px}.sh-heading p{font-size:16px}.sh-choices{gap:10px}.sh-choices a{padding:12px;gap:6px}.sh-choices svg{width:48px}.sh-choices span{font-size:13px}.sh-setup{padding:18px}.sh-comparison{grid-template-columns:1fr}.sh-step h4{font-size:18px}.sh-step p,.sh-actions p{font-size:17px}.sh-key{padding-inline:16px}.sh-section{padding-block:30px 42px}.sh-lesson h3{font-size:23px}}