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var(--space-reader-hero-block-end);flex-shrink:0;border-radius:var(--r4);border:1px solid var(--glass-border);box-shadow:var(--sh2)}.medisphera-app-shell .reader-hero__inner{position:relative;display:flex;flex-direction:column;gap:.35rem;z-index:1}.medisphera-app-shell .reader-hero__orb{position:absolute;top:-2.5rem;inset-inline-end:-3.75rem;width:13rem;height:13rem;border-radius:50%;filter:blur(40px);pointer-events:none;opacity:.95}.medisphera-app-shell .reader-hero__eyebrow{margin-bottom:.4rem}.medisphera-app-shell .reader-hero__title{position:relative;font-family:var(--ff);font-size:clamp(1.45rem,2.4vw,2.05rem);font-weight:700;color:var(--white);line-height:1.08;letter-spacing:-.025em;margin-bottom:.35rem}.medisphera-app-shell .reader-hero__description{margin-top:0;margin-bottom:0;max-width:44rem}.medisphera-app-shell .reader-hero__footer{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--space-reader-hero-footer-gap);flex-wrap:wrap;margin-top:.85rem}.medisphera-app-shell .reader-hero__meta{gap:var(--space-reader-hero-meta-gap);margin-top:0;flex:1 1 24rem}.medisphera-app-shell .reader-hero__progress{position:absolute;inset-inline:0;inset-block-end:0;height:2px;background:rgba(255,255,255,.08)}.medisphera-app-shell .reader-hero__progress-fill{height:100%;background:linear-gradient(90deg,var(--br),var(--tl));border-radius:0 var(--rf) var(--rf) 0;transition:width .6s var(--ease)}.medisphera-app-shell .reader-hero--axial .reader-hero__orb{background:radial-gradient(circle,rgba(14,165,233,.22),transparent 70%)}.medisphera-app-shell .reader-hero--circulatory .reader-hero__orb{background:radial-gradient(circle,rgba(244,63,94,.22),transparent 70%)}.medisphera-app-shell .reader-hero--respiratory .reader-hero__orb{background:radial-gradient(circle,rgba(52,211,153,.22),transparent 70%)}.medisphera-app-shell .reader-hero--gastrointestinal .reader-hero__orb{background:radial-gradient(circle,rgba(132,204,22,.22),transparent 70%)}.medisphera-app-shell .reader-hero--urogenital .reader-hero__orb{background:radial-gradient(circle,rgba(251,191,36,.22),transparent 70%)}.medisphera-app-shell .reader-hero--nervous .reader-hero__orb{background:radial-gradient(circle,rgba(167,139,250,.22),transparent 70%)}.medisphera-app-shell .reader-toc{width:var(--space-reader-sidebar-width);min-width:var(--space-reader-sidebar-width);border-right:1px solid var(--bd);background:var(--sf);display:flex;flex-direction:column;transition:width .2s var(--ease),min-width .2s var(--ease),transform .2s var(--ease);z-index:40}.medisphera-app-shell .reader-toc-header{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--line);flex-shrink:0;min-height:52px}.medisphera-app-shell .reader-toc-scroll{flex:1;overflow-y:auto;padding:var(--space-reader-rail-top) 0 var(--space-reader-rail-bottom);scrollbar-width:thin;min-width:260px}.medisphera-app-shell .reader-toc-toggle{width:28px;height:28px;border-radius:var(--r3);background:transparent;border:1px solid transparent;color:var(--tx3);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s;flex-shrink:0}.medisphera-app-shell .reader-toc-toggle:hover{background:var(--ov);color:var(--tx)}.medisphera-app-shell .reader-toc-toggle:focus-visible{outline:2px solid var(--br);outline-offset:2px}.medisphera-app-shell .reader-toc.collapsed{width:60px;min-width:60px}.medisphera-app-shell .reader-toc.collapsed .reader-toc-header{justify-content:center;padding-inline:0}.medisphera-app-shell .reader-toc.collapsed .reader-toc-scroll{overflow:hidden;opacity:0;pointer-events:none}.medisphera-app-shell .reader-toc.collapsed .toc-item span:not(.shrink-0),.medisphera-app-shell .reader-toc.collapsed 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transparent;font-size:.82rem;font-weight:700;line-height:1.1;cursor:pointer;transition:var(--transition-base);position:relative;overflow:hidden;text-decoration:none;white-space:nowrap}.medisphera-app-shell .ui-button:focus-visible{outline:none;box-shadow:0 0 0 3px color-mix(in srgb,var(--br) 26%,transparent)}.medisphera-app-shell .ui-button:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}.medisphera-app-shell .ui-button--primary{background:linear-gradient(135deg,var(--br),var(--tl));color:var(--white);box-shadow:var(--shadow-glow-soft)}.medisphera-app-shell .ui-button--primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:var(--shadow-glow)}.medisphera-app-shell .ui-button--secondary{background:var(--sf);color:var(--tx);border-color:var(--glass-border);box-shadow:var(--sh1)}.medisphera-app-shell .ui-button--secondary:hover:not(:disabled){background:var(--sf-h);border-color:var(--bd-h)}.medisphera-app-shell .ui-button--glass{background:var(--glass-bg);color:var(--white);border-color:var(--glass-border);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);box-shadow:var(--sh1)}.medisphera-app-shell .ui-button--glass:hover:not(:disabled){background:var(--glass-bg-hover);border-color:var(--shell-strong-line)}.medisphera-app-shell .ui-button--compact{min-height:var(--reader-toggle-height);padding:0 .95rem;font-size:.74rem}.medisphera-app-shell .ui-button__icon{display:inline-flex;align-items:center;justify-content:center;flex:none}.medisphera-app-shell .ui-button__content{display:flex;min-width:0;flex-direction:column;align-items:flex-start;gap:.15rem}.medisphera-app-shell .ui-button__eyebrow{font-size:.62rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;opacity:.72}.medisphera-app-shell .ui-button__title{font-size:.88rem;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.medisphera-app-shell 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.reader-right{width:0;min-width:0;overflow:hidden;border-left:1px solid var(--bd);background:var(--sf);transition:width .2s var(--ease),min-width .2s var(--ease)}.medisphera-app-shell .reader-right.open{width:284px;min-width:284px}.medisphera-app-shell .r-h1{font-family:var(--ff);font-size:1.78rem;font-weight:700;color:var(--tx);line-height:1.2;margin-bottom:9px}.medisphera-app-shell .r-h2{font-family:var(--ff);font-size:1.22rem;font-weight:600;color:var(--tx);margin-bottom:10px;margin-top:var(--space-section-gap);line-height:1.3;padding-bottom:7px;border-bottom:1px solid var(--bd)}.medisphera-app-shell .r-meta{display:flex;align-items:center;gap:8px;margin-bottom:var(--space-label-gap);flex-wrap:wrap}.medisphera-app-shell .reader-subject-chip{display:inline-flex;align-items:center;gap:var(--space-reader-chip-gap);max-width:var(--reader-chip-max-width);min-height:1.65rem;padding-inline:var(--space-reader-chip-inline);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:.62rem;line-height:1}.medisphera-app-shell .article-top-anchor{display:block;scroll-margin-top:var(--reader-header-offset)}.medisphera-app-shell .reader-content-shell{width:100%;max-width:var(--space-reader-content-max);margin-inline:auto;padding-top:var(--space-reader-content-start)}.medisphera-app-shell .reader-toc.collapsed+.reader-main-pane .reader-hero-shell{max-width:var(--space-reader-hero-max-wide)}.medisphera-app-shell .reader-toc.collapsed+.reader-main-pane .reader-content-shell{max-width:var(--space-reader-content-max-wide)}.medisphera-app-shell .reader-lesson-head{margin-bottom:1.65rem}.medisphera-app-shell 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.cal-t{color:var(--emerald-copy-dark)}.medisphera-app-shell .kc{background:var(--neutral-soft-bg);border:1px solid var(--bd);border-radius:var(--r2);padding:12px 14px;margin-bottom:13px;position:relative;overflow:hidden}.dark .medisphera-app-shell .kc{background:var(--glass-bg)}.medisphera-app-shell .kc:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--br)}.medisphera-app-shell .kc-h{font-family:var(--ff);font-size:.95rem;font-weight:600;color:var(--tx);margin-bottom:5px;display:flex;align-items:center;gap:5px}.medisphera-app-shell .kc-b{font-size:.825rem;line-height:1.77;color:var(--reader-copy)}.dark .medisphera-app-shell .kc-b{color:var(--tx2)}.medisphera-app-shell .diag-box{background:var(--ov);border-radius:var(--r3);padding:20px 12px;display:flex;flex-direction:column;align-items:center;gap:7px;margin-bottom:15px}.medisphera-app-shell 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