.abstract-viewer{min-height:100vh;padding:var(--space-2xl) var(--space-lg);background:var(--color-bg)}.abstract-viewer__container{max-width:980px;margin:0 auto}.abstract-viewer__back{display:inline-flex;align-items:center;gap:6px;font-size:var(--text-sm);color:var(--color-text-muted);text-decoration:none;margin-bottom:var(--space-lg);transition:color var(--transition-base)}.abstract-viewer__back:hover{color:var(--color-accent)}.abstract-viewer__header{border-bottom:1px solid var(--color-border);padding-bottom:var(--space-lg);margin-bottom:var(--space-lg)}.abstract-viewer__meta{display:flex;align-items:center;gap:var(--space-sm);font-size:var(--text-xs);color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:var(--space-sm)}.abstract-viewer__event{color:var(--color-accent);font-weight:600}.abstract-viewer__sep{opacity:.5}.abstract-viewer__title{font-family:var(--font-heading);font-size:clamp(1.5rem,3vw,2.25rem);font-weight:700;line-height:1.2;margin-bottom:var(--space-sm)}.abstract-viewer__authors{font-size:var(--text-sm);color:var(--color-text-muted);font-style:italic}.abstract-viewer__actions{display:flex;flex-wrap:wrap;gap:var(--space-sm);margin-bottom:var(--space-lg)}.abstract-viewer__btn{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;font-size:var(--text-sm);font-weight:600;letter-spacing:.02em;border-radius:var(--radius-md);text-decoration:none;transition:background var(--transition-base),color var(--transition-base),border-color var(--transition-base),transform var(--transition-base)}.abstract-viewer__btn:hover{transform:translateY(-1px)}.abstract-viewer__btn--primary{background:var(--color-accent);color:var(--color-bg);border:1px solid var(--color-accent)}.abstract-viewer__btn--primary:hover{background:color-mix(in srgb,var(--color-accent) 88%,transparent)}.abstract-viewer__btn--outline{background:transparent;color:var(--color-accent);border:1px solid var(--color-border)}.abstract-viewer__btn--outline:hover{border-color:var(--color-accent);background:color-mix(in srgb,var(--color-accent) 10%,transparent)}.abstract-viewer__btn:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px}.abstract-viewer__frame-wrapper{position:relative;width:100%;aspect-ratio:8.5 / 11;max-height:calc(100vh - 200px);background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden}.abstract-viewer__frame{width:100%;height:100%;border:0;display:block}@media(max-width:640px){.abstract-viewer{padding:var(--space-lg) var(--space-md)}.abstract-viewer__frame-wrapper{aspect-ratio:3 / 4}.abstract-viewer__btn{flex:1 1 auto;justify-content:center}}