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.learning-space{padding:76px var(--pad) 72px;background:#fff;overflow:hidden}.learning-space .section-title{margin-bottom:35px}.space-tabs{display:flex;gap:32px;padding:0 0 18px;border-bottom:1px solid #d4dae5;margin-bottom:28px}.space-tabs button{padding:8px 0;font-size:12px;color:#7a8395;position:relative}.space-tabs button[aria-selected=true]{color:var(--blue)}.space-tabs button[aria-selected=true]:after{content:'';position:absolute;bottom:-19px;left:0;right:0;height:2px;background:var(--blue)}.notebook{display:grid;grid-template-columns:1fr 2fr;gap:5%;align-items:stretch;perspective:1500px;min-height:470px}.notebook-side{padding:35px 0 25px}.notebook-side .eyebrow{font-size:8px;color:#7a8497}.notebook-side h3{font-size:42px;line-height:1.13;margin-bottom:23px}.notebook-side>p{font-size:12px;color:#7a8395;line-height:1.85;max-width:260px}.teacher-mini{display:flex;align-items:center;gap:11px;font-size:11px;font-weight:500;margin-top:33px}.teacher-mini img{width:43px;height:43px;border-radius:50%;object-fit:cover;object-position:center 16%}.teacher-mini small{display:block;max-width:170px;font-size:9px;line-height:1.5;font-weight:400;color:#7a8395;margin-top:3px}.space-tools{display:flex;gap:12px;margin-top:32px}.space-tools span{font-size:21px;color:#6f7d9a;width:31px;height:31px;border-bottom:1px solid #cad1df}.space-tools span:first-child{color:var(--blue);border-color:var(--blue)}.notebook-paper{background:#f7f8fc;position:relative;border:1px solid #d8dfed;box-shadow:12px 15px 0 #e8edf699;transform:perspective(1500px) rotateY(calc((.5 - var(--book-p))*-5deg)) rotateX(calc((.5 - var(--book-p))*3deg));transform-origin:center;will-change:transform}.paper-top,.paper-bottom{display:flex;justify-content:space-between;align-items:center;padding:17px 27px;font-size:9px;color:#75829b;border-bottom:1px solid #d8dfed}.paper-top span:last-child{font-size:8px;letter-spacing:.1em}.paper-content{padding:28px 35px 24px}.paper-topic{font-size:10px;color:var(--blue);margin-bottom:15px}.solution b{font:italic clamp(30px,3vw,65px)/1.2 Georgia,serif;font-weight:400;display:block;letter-spacing:-.03em;color:#253a69}.solution p{font-size:11px;color:#7a87a0;margin-top:13px;min-height:19px}.sketch{width:100%;margin:22px 0 14px;max-height:210px}.sketch text{font:13px Georgia,serif;fill:#5d6f95}.sketch .sketch-function{font:italic 16px Georgia,serif;fill:var(--blue)}.solution-button{display:block;font-size:11px;color:var(--blue);padding:5px 0;border-bottom:1px solid #3156ec80}.paper-bottom{border-top:1px solid #d8dfed;border-bottom:0;padding-top:12px;padding-bottom:12px}.paper-bottom span:last-child{font-size:16px}.space-alternative{display:grid;grid-template-columns:1fr 1.3fr;gap:10%;padding:45px 15px 60px;min-height:470px;align-items:center}.space-alternative h3{font-size:clamp(34px,3vw,60px);line-height:1.12;margin:18px 0 25px}.space-alternative p{font-size:13px;color:#748097;max-width:360px;line-height:1.8}.homework-example{list-style:none;padding:0;margin:0}.homework-example li{display:flex;gap:22px;padding:25px 0;border-bottom:1px solid #d8dfed}.homework-example li>span{font:italic 30px Georgia,serif;color:var(--blue)}.homework-example b{font-weight:500;font-size:16px}.homework-example p{font-size:12px;margin-top:7px}.parent-note{padding:35px;background:#edf1fb;border-left:2px solid var(--blue)}.parent-note>span{font-size:9px;letter-spacing:.07em;color:#7081a1}.parent-note h4{font-size:22px;line-height:1.3;font-weight:500;margin:20px 0}.parent-note p{font-size:12px;margin:12px 0}.parent-note small{font-size:9px;color:#7c89a3;display:block;margin-top:25px}.space-features{display:grid;grid-template-columns:repeat(3,1fr);gap:6%;margin-top:65px;padding-top:28px;border-top:1px solid #d8dfed}.space-features>div{display:flex;gap:16px}.space-features>div>span{font-size:24px;line-height:1;color:var(--blue)}.space-features b{display:block;font-size:13px;font-weight:500;color:#384b70;margin-bottom:5px}.space-features p{font-size:11px;color:#8791a3;line-height:1.7;max-width:230px}
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