:root{--blue: #2563EB;--cyan: #06B6D4;--ink: #0f172a;--slate: #475569;--slate-light: #64748b;--line: #e2e8f0;--bg: #f8fafc;--card: #ffffff;--grad: linear-gradient(135deg, #2563EB, #06B6D4);--ease: cubic-bezier(.22, 1, .36, 1);--wrap: 1120px;--prose: 720px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:Inter,-apple-system,BlinkMacSystemFont,SF Pro Display,Segoe UI,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}a:focus-visible,button:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}img{max-width:100%;height:auto}.lib-nav{background:var(--ink);position:sticky;top:0;z-index:100;border-bottom:1px solid rgba(255,255,255,.08)}.lib-nav .nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px}.lib-nav .logo img{height:34px;width:auto;display:block}.lib-nav .nav-links{display:flex;gap:28px}.lib-nav .nav-links a{color:#ffffffbf;font-size:14px;font-weight:600}.lib-nav .nav-links a:hover{color:#fff;text-decoration:none}.lib-nav .nav-links a[aria-current=true]{color:#fff}.lib-nav .nav-cta{display:flex;align-items:center;gap:18px}.lib-nav .nav-login{color:#ffffffbf;font-size:14px;font-weight:600}.lib-nav .nav-login:hover{color:#fff;text-decoration:none}.lib-nav .btn-brand{background:var(--grad);color:#fff;font-size:13.5px;font-weight:700;padding:9px 18px;border-radius:10px}.lib-nav .btn-brand:hover{text-decoration:none;filter:brightness(1.08)}@media(max-width:820px){.lib-nav .nav-links{display:none}}@media(max-width:600px){.lib-nav .nav-inner{gap:12px}.lib-nav .logo img{height:28px;width:auto}.lib-nav .nav-login{display:none}.lib-nav .btn-brand{padding:8px 14px;font-size:12.5px;white-space:nowrap}.crumbs [aria-current=page]{max-width:55vw}.article-head .byline{font-size:13px}.lib-hero{padding:40px 0 28px}.lib-footer .foot-cols{gap:32px}}.crumbs{padding:20px 0 0}.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;font-size:13px}.crumbs li{color:var(--slate-light);display:flex;gap:6px;align-items:center}.crumbs li+li:before{content:"/";color:var(--line)}.crumbs a{color:var(--slate);font-weight:500}.crumbs [aria-current=page]{color:var(--ink);font-weight:600;max-width:40ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lib-hero{padding:56px 0 40px}.lib-hero h1{font-size:clamp(30px,4.5vw,44px);font-weight:800;letter-spacing:-.02em}.lib-hero p{margin-top:12px;font-size:17px;color:var(--slate);max-width:62ch}.pillar-section{padding:8px 0 36px}.pillar-section h2{font-size:15px;font-weight:800;letter-spacing:.05em;text-transform:uppercase;color:var(--slate);margin-bottom:16px}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:18px}.article-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px;display:flex;flex-direction:column;gap:8px;transition:box-shadow .25s var(--ease),transform .25s var(--ease)}.article-card:hover{box-shadow:0 8px 28px #0f172a14;transform:translateY(-2px);text-decoration:none}.article-card h3{font-size:17px;font-weight:700;color:var(--ink);line-height:1.35}.article-card p{font-size:14px;color:var(--slate)}.article-card .card-meta{font-size:12.5px;color:var(--slate-light);margin-top:auto;padding-top:8px}.article-head{max-width:var(--prose);margin:0 auto;padding:36px 24px 8px}.article-head .pillar-tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--blue);background:#2563eb14;padding:5px 12px;border-radius:999px;margin-bottom:16px}.article-head h1{font-size:clamp(28px,4vw,40px);font-weight:800;letter-spacing:-.02em;line-height:1.2}.article-head .byline{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px 20px;font-size:14px;color:var(--slate)}.article-head .byline strong{color:var(--ink);font-weight:600}.article-head .reviewer{display:inline-flex;align-items:center;gap:6px;color:var(--slate)}.article-head .reviewer .check{color:var(--blue);font-weight:800}.prose{max-width:var(--prose);margin:0 auto;padding:24px 0 72px;font-size:16.5px;line-height:1.75;color:#1e293b}.prose h2{font-size:24px;font-weight:800;letter-spacing:-.01em;margin:40px 0 14px}.prose h3{font-size:19px;font-weight:700;margin:30px 0 10px}.prose p{margin:0 0 18px}.prose ul,.prose ol{margin:0 0 18px;padding-left:26px}.prose li{margin-bottom:8px}.prose blockquote{border-left:3px solid var(--blue);padding:4px 0 4px 18px;margin:0 0 18px;color:var(--slate);font-style:italic}.prose img{border-radius:12px;border:1px solid var(--line)}.prose code{background:#eef2f7;border-radius:6px;padding:2px 6px;font-size:.9em}.prose hr{border:none;border-top:1px solid var(--line);margin:32px 0}.prose table{border-collapse:collapse;width:100%;margin:0 0 18px;font-size:15px;display:block;overflow-x:auto;max-width:100%}.prose th,.prose td{border:1px solid var(--line);padding:10px 12px;text-align:left}.prose th{background:var(--bg);font-weight:700}.lib-footer{background:var(--ink);color:#ffffffb3;padding:48px 0 32px;margin-top:40px;font-size:14px}.lib-footer .foot-grid{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap}.lib-footer .foot-brand img{height:36px;width:auto;display:block;margin-bottom:12px}.lib-footer .foot-brand p{max-width:34ch}.lib-footer .foot-cols{display:flex;gap:56px;flex-wrap:wrap}.lib-footer h4{color:#fff;font-size:13px;font-weight:800;letter-spacing:.05em;text-transform:uppercase;margin-bottom:12px}.lib-footer .foot-cols a{display:block;color:#ffffffa6;margin-bottom:8px}.lib-footer .foot-cols a:hover{color:#fff;text-decoration:none}.lib-footer .foot-bottom{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:#ffffff80}.pillar-lede{font-size:15px;color:var(--slate);margin:-6px 0 16px;max-width:80ch}.author-box{max-width:var(--prose);margin:0 auto;padding-bottom:8px}.author-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px 22px;font-size:14.5px;color:var(--slate)}.author-card h2{font-size:13px;font-weight:800;letter-spacing:.05em;text-transform:uppercase;color:var(--slate);margin-bottom:8px}.author-card strong{color:var(--ink)}.author-card .reviewed-note{margin-top:10px}.author-card .check{color:var(--blue);font-weight:800}.related{padding:36px 24px 56px}.related h2{font-size:20px;font-weight:800;margin-bottom:16px}.related-all{margin-top:16px;font-size:14.5px;font-weight:600}