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140px);padding-bottom:2rem;position:sticky;top:140px;overflow-y:auto}.premium-sidebar::-webkit-scrollbar{width:4px}.premium-sidebar::-webkit-scrollbar-thumb{background-color:#e2e8f0}.toc-widget{margin-bottom:3rem}.widget-title{text-transform:uppercase;color:#94a3b8;letter-spacing:.05em;margin-bottom:1rem;font-size:.75rem;font-weight:700}.premium-toc-list{border-left:1px solid #e2e8f0;margin:0;padding:0;list-style:none}.premium-toc-list li{margin-bottom:0}.premium-toc-list a{color:#64748b;border-left:2px solid #0000;margin-left:-1px;padding:8px 0 8px 16px;font-size:.9rem;text-decoration:none;transition:all .2s;display:block}.premium-toc-list a:hover{color:var(--accent);border-left-color:var(--accent);background:linear-gradient(90deg,#f8fafc,#0000)}.premium-toc-list a.active{color:var(--accent);border-left-color:var(--accent);background:linear-gradient(90deg,#f8fafc,#0000);font-weight:600}.share-buttons{gap:10px;display:flex}.share-btn{color:#64748b;cursor:pointer;background:#fff;border:1px solid #e2e8f0;border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;font-size:.8rem;font-weight:700;transition:all .2s;display:flex}.share-btn:hover{color:#0f172a;border-color:#0f172a}.premium-content-col{max-width:720px;margin:0 auto}.premium-prose{color:#334155;font-family:system-ui,-apple-system,sans-serif;font-size:1.2rem;line-height:1.8}.premium-prose h2{color:#0f172a;letter-spacing:-.02em;margin-top:3rem;margin-bottom:1.5rem;scroll-margin-top:140px;font-size:2rem;font-weight:800}.premium-prose h3{color:#1e293b;margin-top:2.5rem;margin-bottom:1rem;scroll-margin-top:140px;font-size:1.5rem;font-weight:700}.premium-prose p{margin-bottom:1.5rem}.premium-prose ul{margin-bottom:2rem;padding-left:1.5rem}.premium-prose li{margin-bottom:.75rem;position:relative}.premium-prose li::marker{color:var(--accent)}.premium-prose img{border-radius:12px;max-width:100%;height:auto;margin:2rem 0;display:block;box-shadow:0 4px 12px #0000000d}.premium-prose a:not(.inline-flex){color:#13b5ea;text-underline-offset:2px;font-weight:600;text-decoration:underline;transition:color .2s}.premium-prose a:not(.inline-flex):hover{color:#0e9ac8;text-decoration:underline}.premium-prose table{border-collapse:collapse;background:#fff;border-radius:8px;width:100%;margin:2rem 0;font-size:1rem;overflow:hidden;box-shadow:0 1px 3px #0000001a}.premium-prose table thead{background:#f8fafc;border-bottom:2px solid #e2e8f0}.premium-prose table th{text-align:left;color:#0f172a;text-transform:uppercase;letter-spacing:.05em;padding:1rem;font-size:.9rem;font-weight:700}.premium-prose table td{color:#334155;vertical-align:top;border-bottom:1px solid #f1f5f9;padding:1rem}.premium-prose table tbody tr:last-child td{border-bottom:none}.premium-prose table tbody tr:hover{background:#f8fafc}@media (max-width:768px){.premium-prose table{font-size:.85rem}.premium-prose table th,.premium-prose table td{padding:.75rem .5rem}}.newsletter-cta{text-align:center;border-radius:20px;margin-top:0;padding:2.5rem 1.5rem;position:relative;overflow:hidden}@media (min-width:768px){.newsletter-cta{padding:4rem 3rem}}.newsletter-cta:before{content:"";z-index:0;pointer-events:none;background:radial-gradient(circle,#2dd4bf1a 0%,#0f172a00 70%);width:600px;height:600px;position:absolute;top:-50%;left:50%;transform:translate(-50%)}.newsletter-cta h3{color:#fff;z-index:1;margin-bottom:.75rem;font-size:1.625rem;font-weight:800;position:relative}@media (min-width:768px){.newsletter-cta h3{font-size:2rem}}.newsletter-cta>div>p{z-index:1;position:relative}.newsletter-form{z-index:1;gap:10px;max-width:420px;margin:0 auto;display:flex;position:relative}.newsletter-form input{color:#fff;background:#1e293b;border:1px solid #334155;border-radius:8px;flex-grow:1;padding:14px 20px;font-size:1rem;transition:all .2s}.newsletter-form input:focus{border-color:var(--accent);background:#1e293b;outline:none}.newsletter-form input::placeholder{color:#64748b}.btn-subscribe{color:#0f172a;cursor:pointer;background:#fff;border:none;border-radius:8px;padding:0 28px;font-weight:700;transition:all .2s}.btn-subscribe:hover{background:#cbd5e1;transform:translateY(-1px)}.back-nav{margin-bottom:32px}.back-link{color:#64748b;font-size:.95rem;font-weight:600;text-decoration:none;transition:color .2s}.back-link:hover{color:#0f172a;text-decoration:underline}@media (max-width:992px){.premium-layout{grid-template-columns:1fr}.hero-grid{grid-template-columns:1fr;gap:40px}.premium-sidebar{display:none}.premium-post-title{font-size:2.5rem}}