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(max-width:900px){.sd-menu-btn{display:flex}.sd-side{position:absolute;inset-block:0;inset-inline-start:0;z-index:20;width:min(322px,88vw);max-width:100%;transition:transform .2s ease;visibility:hidden;pointer-events:none}.sd-side,[dir=rtl] .sd-side{transform:translateX(100%)}[dir=ltr] .sd-side{transform:translateX(-100%)}.sd-side.is-open,[dir=ltr] .sd-side.is-open,[dir=rtl] .sd-side.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.sd-backdrop{display:block;position:absolute;inset:0;background:rgba(20,18,16,.4);z-index:15}.sd-hero,.sd-lib-hero{padding:32px 20px 28px}.sd-reading{padding:32px 20px 24px}.sd-shelf-room{padding:28px 20px 40px}.sd-colophon{padding:14px 20px}.sd-hero-stats{gap:22px 28px;margin:24px 0 26px}.sd-home-pad{padding:24px 20px 40px}.sd-overview{grid-template-columns:1fr;gap:24px;padding:28px 20px 24px}.sd-overview-copy h1{max-width:none}.sd-overview-art{min-height:160px}.sd-syllabus{padding:24px 20px 40px}.sd-lesson{padding:28px 20px 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