.shell-body .syl{max-width:900px;margin:0 auto;padding:28px 18px 72px}@media (min-width:700px){.shell-body .syl{padding:36px 24px 80px}}.syl{flex-direction:column;gap:40px;display:flex}.syl-eyebrow{font:600 12px/1 var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-50);align-items:center;gap:8px;margin-bottom:14px;display:inline-flex}.syl-sq{background:var(--accent);border-radius:3px;flex-shrink:0;width:11px;height:11px}.syl-sq-ink{background:var(--ink)}.syl-h2{font-family:var(--font-display);letter-spacing:-.02em;color:var(--ink);margin:0 0 18px;font-size:clamp(25px,3.2vw,32px);font-weight:700;line-height:1.15}.syl-h2 em{color:var(--accent);font-style:italic}.syl-toggle{background:var(--card-warm);border:1px solid var(--rule);border-radius:12px;align-self:flex-start;gap:4px;padding:4px;display:inline-flex}.syl-toggle button{font:600 15.5px/1 var(--font-sans);color:var(--ink-50);cursor:pointer;background:0 0;border:0;border-radius:9px;padding:11px 22px;transition:background .15s,color .15s}.syl-toggle button.on{background:var(--accent);color:#fff}.syl-toggle button:not(.on):hover{color:var(--ink)}.syl-info{flex-direction:column;gap:8px;display:flex}.syl-paper-info{font:600 14.5px/1.5 var(--font-mono);color:var(--accent);margin:0}.syl-overview{font:400 16.5px/1.7 var(--font-sans);color:var(--ink-70);max-width:68ch;margin:0}.syl-sections{flex-direction:column;gap:12px;display:flex}.syl-section{border:1px solid var(--rule);background:var(--card);border-radius:14px;overflow:hidden}.syl-section-head{cursor:pointer;text-align:left;background:0 0;border:0;justify-content:space-between;align-items:center;gap:12px;width:100%;padding:18px 20px;display:flex}.syl-section-head-left{align-items:center;gap:13px;min-width:0;display:flex}.syl-section-icon{border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:38px;height:38px;display:flex}.syl-section-icon-acc{background:var(--accent-wash);color:var(--accent)}.syl-section-icon-grn{background:var(--green-wash);color:var(--green)}.syl-section-icon-tan{background:var(--tan);color:var(--ink-70)}.syl-section-icon-amb{background:var(--butter);color:#8a6410}.syl-section-name{font-family:var(--font-display);letter-spacing:-.01em;color:var(--ink);font-size:18.5px;font-weight:700}.syl-section-meta{flex-shrink:0;align-items:center;gap:10px;display:flex}.syl-section-count{font:500 12.5px/1 var(--font-mono);color:var(--ink-50);white-space:nowrap}.syl-chev{color:var(--ink-50);transition:transform .15s var(--ease);flex-shrink:0}.syl-chev.open{transform:rotate(180deg)}.syl-section-body{flex-direction:column;gap:18px;padding:0 20px 22px;display:flex}.syl-topics{grid-template-columns:1fr;gap:10px;margin:0;padding:0;list-style:none;display:grid}@media (min-width:600px){.syl-topics{grid-template-columns:1fr 1fr}}.syl-topics li{font:400 15px/1.55 var(--font-sans);color:var(--ink-70);align-items:flex-start;gap:9px;display:flex}.syl-topics li svg{color:var(--green);flex-shrink:0;margin-top:3px}.syl-books-grid{grid-template-columns:1fr;gap:10px;display:grid}@media (min-width:640px){.syl-books-grid{grid-template-columns:1fr 1fr}}.syl-book{border:1px solid var(--rule);border-left:4px solid var(--rule-2);background:var(--card-warm);transition:transform .15s var(--ease), border-color .15s, box-shadow .15s;border-radius:4px 12px 12px 4px;padding:15px 16px}.syl-book:hover{transform:translateY(-2px);box-shadow:0 8px 20px -12px #1c120840}.syl-book-essential{border-color:var(--accent-tint);border-left-color:var(--accent);background:var(--accent-wash)}.syl-book-essential:hover{border-color:var(--accent)}.syl-book-reference{border-left-color:var(--navy)}.syl-book-top{align-items:flex-start;gap:9px;display:flex}.syl-book-icon{color:var(--ink-30);flex-shrink:0;margin-top:2px}.syl-book-essential .syl-book-icon{color:var(--accent)}.syl-book-title{font-family:var(--font-display);letter-spacing:-.01em;color:var(--ink);flex:1;font-size:15.5px;font-weight:700;line-height:1.3}.syl-book-tag{font:600 10.5px/1 var(--font-mono);text-transform:uppercase;letter-spacing:.06em;white-space:nowrap;border-radius:999px;flex-shrink:0;align-items:center;gap:4px;padding:5px 9px;display:inline-flex}.syl-book-tag-essential{background:var(--accent);color:#fff}.syl-book-tag-reference{background:var(--navy);color:#fff}.syl-book-tag-optional{background:var(--rule-2);color:var(--ink-70)}.syl-book-author{font:500 13px/1.4 var(--font-sans);color:var(--ink-50);margin-top:6px;padding-left:24px}.syl-book-why{font:400 14px/1.55 var(--font-sans);color:var(--ink-70);margin:8px 0 0;padding-left:24px}.syl-practice-link{font:600 14.5px/1 var(--font-sans);color:var(--accent);align-self:flex-start;text-decoration:none;display:inline-flex}.syl-practice-link:hover{color:var(--accent-deep)}.syl-guide-grid{grid-template-columns:1fr;gap:16px;display:grid}@media (min-width:700px){.syl-guide-grid{grid-template-columns:1fr 1fr}}.syl-guide-step{gap:13px;display:flex}.syl-guide-n{background:var(--accent-wash);width:32px;height:32px;color:var(--accent);font:700 14px/1 var(--font-mono);border-radius:9px;flex-shrink:0;justify-content:center;align-items:center;display:flex}.syl-guide-title{font:700 15.5px/1.3 var(--font-sans);color:var(--ink);margin-bottom:4px}.syl-guide-step p{font:400 14.5px/1.6 var(--font-sans);color:var(--ink-70);margin:0}.syl-cross-note{font:400 14.5px/1.55 var(--font-sans);color:var(--ink-50);margin:-10px 0 16px}.syl-cta{background:var(--ink);border-radius:16px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:18px;padding:26px 28px;display:flex}.syl-cta-title{font-family:var(--font-display);letter-spacing:-.015em;color:var(--card-warm);margin-bottom:6px;font-size:21px;font-weight:800}.syl-cta p{font:400 14.5px/1.55 var(--font-sans);color:#f8f5eea6;max-width:40ch;margin:0}.syl-cta-links{flex-wrap:wrap;gap:10px;display:flex}.syl-cta .btn-primary{background:var(--accent)}.syl-cta .btn-secondary{color:var(--card-warm);border-color:#f8f5ee4d}.syl-cta .btn-secondary:hover{border-color:var(--card-warm)}