@container post (max-width:760px){.sticky-bar-meta{display:none}.sponsor-thanks{gap:14px;padding:14px 16px}.sponsor-thanks-logos{gap:14px}.sponsor-grid{grid-template-columns:1fr}}@container post (max-width:480px){.breadcrumb{font-size:11.5px}.breadcrumb .sep{margin:0 5px}.sponsor-thanks{padding:12px 14px;gap:10px}.sponsor-thanks-logos{gap:12px}.sponsor-thanks-logo{font-size:13px}}.cluster-tag{display:inline-flex;align-items:center;gap:8px;font-family:"Inter",sans-serif;font-size:11px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--pillar-color);background:var(--pillar-bg);border:1px solid var(--pillar-border);padding:7px 14px;border-radius:18px;text-decoration:none;margin-bottom:24px;transition:all .2s ease}.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}.faq-item.open .faq-q{background:var(--warm-white)}.faq-item.open .faq-arrow{transform:rotate(180deg)}.faq-item.open .faq-a{display:block}