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p{color:var(--muted);font-size:14px;line-height:1.8;margin:0}.about-demo{background:var(--surface);border:1px solid var(--input-border);border-radius:10px;overflow:hidden;box-shadow:0 15px 40px #0002}.about-demo>header{padding:14px 18px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;gap:10px;align-items:center}.about-demo>header>span{font-size:9px;letter-spacing:.12em;display:flex;align-items:center;gap:7px}.about-demo>header i{width:5px;height:5px;border-radius:50%;background:var(--about-accent)}.about-demo>header small{font-size:10px;color:var(--muted)}.about-demo-tabs{display:flex;gap:4px;padding:10px 12px;border-bottom:1px solid var(--border)}.about-demo-tabs button{flex:1;min-height:38px;border:1px solid transparent;border-radius:5px;background:transparent;color:var(--muted);font-size:12px}.about-demo-tabs button[aria-selected=true]{color:var(--foreground);border-color:var(--input-border);background:var(--raised)}.about-demo-tabs 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small{display:block;font-size:10px;color:var(--muted);margin-bottom:4px}.demo-big-stats strong{font-size:22px;font-weight:500}.about-demo-panel h4{margin:14px 0 7px;font-size:14px}.demo-math{display:flex;justify-content:space-between;gap:10px;background:var(--raised);border:1px solid var(--border);border-radius:6px;padding:10px 12px;align-items:center;font-size:12px}.demo-math span{color:var(--muted)}.demo-math strong{font-weight:500;font-variant-numeric:tabular-nums}.about-reading{display:grid;grid-template-columns:170px 1fr;gap:36px;align-items:center;padding:36px;background:linear-gradient(100deg,var(--about-accent-bg),var(--surface));border:1px solid var(--border);border-radius:10px;margin:14px 0 64px}.about-pip{text-align:center}.about-pip img{display:block;margin:0 auto;width:130px;height:130px;object-fit:contain}.about-pip span{display:block;font-size:9px;letter-spacing:.14em;color:var(--about-accent);font-weight:600}.about-reading p{color:var(--muted);line-height:1.8;max-width:630px}.about-reading .small{font-size:11px;margin-bottom:0}.about-expect{padding:0 0 64px}.about-expect-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:36px}.about-expect-symbol{display:block;color:var(--about-accent);font-size:10px;letter-spacing:.1em;padding-bottom:12px;border-bottom:1px solid var(--border);margin-bottom:20px}.about-expect-grid h3{font-size:17px;font-weight:500;margin:0 0 10px;letter-spacing:-.01em}.about-expect-grid p{font-size:13px;color:var(--muted);line-height:1.8}.about-faq{max-width:760px;margin:42px auto 0;border-top:1px solid var(--border)}.about-faq details{border-bottom:1px solid var(--border);padding:16px 0}.about-faq summary{cursor:pointer;min-height:32px;line-height:1.6;font-size:14px;font-weight:500;list-style-position:outside;margin-left:20px}.about-faq details>p{font-size:13px;color:var(--muted);line-height:1.8;margin:12px 0 2px 20px}.about-final{border-top:1px solid var(--border);padding:40px 0 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@media(max-width:900px){.about-hero{gap:20px;padding:60px 0}.about-hero-art{padding-left:30px;min-height:380px}.about-art-card{width:200px;min-height:285px}.about-art-card-front img{height:178px}.about-art-card-back{left:5px;top:34px}.about-flow-layout{gap:32px}.about-flow{padding:48px 0}.about-expect-grid{gap:24px}.about-footer{margin:0 32px}.about-final{flex-wrap:wrap}.about-final>div{min-width:230px}}
@media(max-width:650px){.about-header{padding:16px 20px;gap:12px}.about-header nav{display:none}.about-brand{font-size:16px}.about-header-actions{margin-left:auto;gap:5px}.about-header-actions .secondary{font-size:12px;min-height:44px;padding:8px 12px}.about-header-actions .theme-toggle{padding:8px;min-width:40px;width:40px}.about-page main{padding:0 24px}.about-hero{grid-template-columns:1fr;gap:28px;padding:46px 0 40px}.about-hero h1{font-size:48px;margin:20px 0}.about-lead{font-size:18px;max-width:360px}.about-body{font-size:14px}.about-kicker{font-size:9px;letter-spacing:.1em}.about-hero-art{min-height:330px;max-width:360px;width:100%;margin:auto;padding-left:30px}.about-art-card{width:180px;min-height:260px;padding:14px}.about-art-card-front img{height:154px}.about-art-card-back{left:30px;top:15px;min-height:250px}.about-art-card-front p{font-size:12px}.about-art-caption{font-size:11px}.about-flow-layout{grid-template-columns:1fr;gap:36px}.about-steps{gap:26px}.about-section-intro h2,.about-reading h2{font-size:27px}.about-reading{grid-template-columns:1fr;gap:18px;padding:24px;margin-bottom:46px}.about-pip{display:flex;align-items:center;justify-content:flex-start;gap:16px;text-align:left}.about-pip img{width:80px;height:80px;margin:0}.about-reading p{font-size:13px}.about-expect-grid{grid-template-columns:1fr;gap:18px}.about-expect-symbol{margin-bottom:12px}.about-expect-grid p{margin-bottom:0}.about-final{gap:18px;padding:30px 0 40px}.about-final>img{width:56px;height:56px}.about-final>div{min-width:190px}.about-final h2{font-size:23px}.about-final>a{width:100%;justify-content:center}.about-footer{margin:0 24px;flex-direction:column;gap:16px;line-height:1.7}.about-footer nav{gap:16px}.about-demo-panel{padding:18px}.demo-play-heading{gap:8px}.demo-play-heading h3{font-size:14px}.demo-play-heading small{font-size:10px}.about-faq summary{font-size:13px}.about-expect{padding-bottom:36px}}
@media(prefers-reduced-motion:reduce){.about-art-card{transition:none}}