@container post (max-width:760px){.sticky-bar-meta{display:none}}.share-toast{position:fixed;left:50%;bottom:32px;transform:translate(-50%,20px);background:var(--ink);color:white;font-family:"Inter",sans-serif;font-size:14px;font-weight:500;padding:14px 22px;border-radius:999px;box-shadow:0 10px 30px rgba(45,34,37,.28);opacity:0;pointer-events:none;z-index:9999;transition:opacity .22s ease,transform .22s ease;display:inline-flex;align-items:center;gap:10px;max-width:calc(100vw - 32px)}.share-toast.is-visible{opacity:1;transform:translate(-50%,0)}.share-toast::before{content:"✓";display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:50%;background:var(--terracotta);color:white;font-size:12px;font-weight:700;flex-shrink:0}.chapter.open .chapter-head{background:var(--warm-white)}.chapter.open .chapter-arrow{transform:rotate(180deg)}.chapter.open .chapter-body{display:block}.about-pair.solo{grid-template-columns:1fr;max-width:580px;margin-left:auto;margin-right:auto}