:root{--ink:#152033;--muted:#576478;--blue:#123fa5;--navy:#0b1b3b;--line:#e0e6ee;--soft:#f4f7fb;--white:#fff;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--white);font-synthesis:none}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:280px;font-size:1rem;line-height:1.65}a{color:var(--blue);text-underline-offset:3px}a:hover{text-decoration-thickness:2px}button{font:inherit}img{max-width:100%;height:auto}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.16;letter-spacing:-.035em}h1{font-size:clamp(2.5rem,5vw,4.35rem);font-weight:780}h2{font-size:clamp(1.65rem,3vw,2.5rem)}h3{font-size:1.22rem}p{max-width:70ch}a:focus-visible,button:focus-visible{outline:3px solid #1c64d1;outline-offset:4px}.shell{width:min(100% - 2.5rem,1200px);margin-inline:auto}.skip{position:absolute;left:-100vw;top:0;background:#fff;padding:.5rem;z-index:10}.skip:focus{left:1rem}.site-header{border-bottom:1px solid var(--line);background:#fff}.header-inner{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:2rem}.brand{text-decoration:none;color:var(--navy);font-weight:850;letter-spacing:-.045em;line-height:1.05;font-size:1.16rem;max-width:152px}.brand-mark small{font-size:.55em;letter-spacing:0;color:var(--blue)}#main-nav{display:flex;align-items:center;gap:clamp(1rem,2.4vw,2.2rem)}#main-nav a{font-size:.91rem;font-weight:620;text-decoration:none;color:var(--ink)}#main-nav a:hover{color:var(--blue)}.menu-button{display:none;background:#fff;border:1px solid var(--line);border-radius:6px;padding:.45rem .7rem;color:var(--ink);cursor:pointer}.eyebrow{font-size:.75rem;letter-spacing:.13em;text-transform:uppercase;color:var(--blue);font-weight:750;margin-bottom:1rem}.hero{padding:5.4rem 0 4.5rem;border-bottom:1px solid var(--line)}.hero h1{margin-bottom:1.2rem}.hero h1 em{font-style:normal;color:var(--blue)}.hero p{font-size:1.25rem;color:var(--muted);line-height:1.55;margin-bottom:1.7rem}.button{display:inline-flex;align-items:center;justify-content:center;gap:.8rem;background:var(--blue);color:#fff;text-decoration:none;border-radius:5px;padding:.82rem 1.18rem;font-weight:650;min-height:46px}.button:hover{background:var(--navy)}.section{padding-block:4.8rem;border-bottom:1px solid var(--line)}.section-heading{display:flex;justify-content:space-between;gap:1rem;align-items:end;margin-bottom:1.65rem}.section-heading h2{margin:0}.text-link{font-weight:680;text-decoration:none;border-bottom:1px solid currentColor;padding-bottom:2px;white-space:normal}.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.3rem}.card{border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff;display:flex;flex-direction:column}.card-image{display:block;background:var(--soft);aspect-ratio:4/3;overflow:hidden}.card-image img{width:100%;height:100%;object-fit:cover}.image-pending{width:100%;height:100%;min-height:220px;display:grid;place-items:center;text-align:center;color:#6a7891;background:repeating-linear-gradient(135deg,#f3f6fa,#f3f6fa 20px,#edf2f8 20px,#edf2f8 40px);font-size:.8rem;line-height:1.6;font-weight:700;letter-spacing:.09em}.card-content{padding:1.45rem;display:flex;flex-direction:column;align-items:flex-start;flex:1}.card-content .eyebrow{font-size:.7rem;margin-bottom:.65rem}.card h3{margin-bottom:.65rem}.card h3 a{text-decoration:none;color:var(--ink)}.card h3 a:hover{color:var(--blue)}.card p{color:var(--muted);line-height:1.5;margin-bottom:1.6rem}.card .text-link{margin-top:auto}.split{display:grid;grid-template-columns:1fr 1fr;gap:3rem}.split p{font-size:1.08rem;color:var(--muted)}.trust{background:var(--soft);width:100%;max-width:none;padding-inline:max(1.25rem,calc((100% - 1200px)/2))}.page{padding-top:3.7rem;padding-bottom:5rem;min-height:58vh}.page h1{margin:0 0 1rem}.lead{font-size:1.2rem;color:var(--muted);line-height:1.55;margin-bottom:2.6rem}.narrow{max-width:820px}.prose h2{font-size:1.55rem;margin-top:2.3rem}.prose p{font-size:1.08rem}.breadcrumbs{display:flex;flex-wrap:wrap;gap:.52rem;color:var(--muted);font-size:.81rem;line-height:1.45;margin-bottom:2rem}.breadcrumbs a{color:var(--muted)}.guide{padding-top:2.1rem;padding-bottom:5rem}.article-header{display:grid;grid-template-columns:1.1fr .9fr;gap:3rem;align-items:center;border-bottom:1px solid var(--line);padding-bottom:2.6rem}.article-header h1{font-size:clamp(2.2rem,4.2vw,3.6rem)}.article-header .lead{margin-bottom:1.2rem}.research-label{background:#eaf0fa;border-left:3px solid var(--blue);padding:.85rem 1rem;font-size:.9rem;line-height:1.5}.article-image{aspect-ratio:4/3;background:var(--soft);overflow:hidden;border-radius:7px}.article-image img{width:100%;height:100%;object-fit:cover}.article-layout{display:grid;grid-template-columns:minmax(0,760px) minmax(180px,1fr);gap:4rem;padding-top:2.5rem}.article-body section{margin-bottom:2.7rem}.article-body h2{font-size:1.75rem;margin-bottom:.8rem}.article-body h3{font-size:1.15rem;letter-spacing:-.015em;margin:1.5rem 0 .4rem}.article-body p{font-size:1.05rem;line-height:1.75}.article-body section>p{margin-bottom:.85rem}.key-details dl{border-top:1px solid var(--line)}.key-details dl div{display:grid;grid-template-columns:38% 1fr;border-bottom:1px solid var(--line);padding:.65rem 0;gap:1rem}.key-details dt{color:var(--muted)}.key-details dd{margin:0;font-weight:630}.amazon-block{border:1px solid #c8d5eb;border-radius:7px;padding:1.35rem 1.5rem;margin:2rem 0 3rem;background:#f8faff}.amazon-block strong{font-size:1.12rem}.amazon-block p{margin:.4rem 0 .9rem}.amazon-block.pending{border-style:dashed;background:#f7f8fa}.placeholder{font-size:.78rem!important;letter-spacing:.02em;color:#875419;background:#fff3dd;display:inline-block;padding:.4rem .6rem;border-radius:3px;overflow-wrap:anywhere}.paid{font-size:.85rem;color:var(--muted);margin-left:.5rem}.video-pending{aspect-ratio:16/9;border:1px dashed #a8b6cc;border-radius:7px;background:var(--soft);display:grid;align-content:center;justify-items:center;text-align:center;padding:1rem}.video-pending p{margin:0 0 .5rem}.video-pending code{font-size:.8rem;color:#875419}.video-shell{position:relative;aspect-ratio:16/9;background:var(--navy);border-radius:7px;overflow:hidden}.video-shell iframe{width:100%;height:100%;border:0}.video-load{width:100%;height:100%;background:transparent;color:#fff;border:0;cursor:pointer;font-weight:700}.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.related-grid .card-image{aspect-ratio:16/9}.related-grid .image-pending{min-height:150px}.related-grid .card-content{padding:1rem}.related-grid .card-content p{font-size:.9rem}.article-note{border-top:1px solid var(--line);padding-top:1.4rem}.article-note h2{font-size:1.3rem}.article-note p{font-size:.93rem}.guide-side .sticky{position:sticky;top:2rem;border-left:1px solid var(--line);padding-left:1.25rem;color:var(--muted)}.guide-side strong{color:var(--ink)}.footer{background:var(--navy);color:#d3deed;padding-top:3.5rem}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:2.5rem}.footer-name{color:#fff;font-size:1.3rem;font-weight:750}.footer a{color:#e3ebf7;text-decoration:none}.footer a:hover{text-decoration:underline}.footer-links{display:flex;flex-direction:column;gap:.55rem}.fine{font-size:.82rem}.footer-bottom{border-top:1px solid #384767;margin-top:3rem;padding:1rem 0;font-size:.82rem}.not-found{padding-top:6rem}@media(max-width:850px){.article-layout{grid-template-columns:1fr}.guide-side{display:none}.article-header{gap:1.5rem}.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:1rem}}@media(max-width:650px){.shell{width:min(100% - 2rem,1200px)}.header-inner{min-height:66px;flex-wrap:wrap;gap:0}.menu-button{display:block}#main-nav{display:none;flex-basis:100%;flex-direction:column;align-items:stretch;gap:0;padding:.7rem 0 1rem}#main-nav.open{display:flex}#main-nav a{padding:.75rem 0;border-top:1px solid var(--line)}.hero{padding:3.1rem 0 3rem}.hero p{font-size:1.07rem}.section{padding-block:3.2rem}.section-heading{align-items:start;flex-direction:column}.card-grid{grid-template-columns:1fr}.card-image{aspect-ratio:16/10}.split{grid-template-columns:1fr;gap:.6rem}.trust{padding-inline:1rem}.page{padding-top:2.4rem}.article-header{grid-template-columns:1fr;gap:1.5rem}.article-header .lead{font-size:1.08rem}.article-image{aspect-ratio:16/10;grid-row:1}.article-layout{padding-top:2rem}.article-body h2{font-size:1.5rem}.related-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.key-details dl div{grid-template-columns:40% 1fr}.paid{display:block;margin:.55rem 0 0}}@media(max-width:350px){h1{font-size:2.3rem}.card-content{padding:1rem}.key-details dl div{grid-template-columns:1fr;gap:.1rem}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}}
/* Authoritative brand and product imagery: preserve full supplied compositions. */
.brand{display:inline-flex;align-items:center;max-width:none}.brand img{display:block;width:58px;height:58px;object-fit:contain}.card-image img,.article-image img{object-fit:contain;background:#fff}@media(max-width:650px){.brand img{width:50px;height:50px}}
/* Desktop refinements: retain the existing layout and visual system. */
@media(min-width:651px){.brand img{width:70px;height:70px}}
.research-label{background:none;border:0;padding:0;color:var(--muted);font-size:.875rem;line-height:1.5;margin:0}.research-label strong{font-weight:650;color:var(--ink)}
.paid{display:block;margin:.55rem 0 0;font-size:.875rem;color:var(--muted);line-height:1.45}
.guide-side ul{list-style:none;padding:0;margin:.75rem 0 1.15rem;display:grid;gap:.22rem}.guide-side li{margin:0}.guide-side li a{display:block;color:var(--muted);text-decoration:none;font-size:.84rem;line-height:1.35;padding:.3rem .4rem;border-radius:3px}.guide-side li a:hover,.guide-side li a:focus-visible{color:var(--blue);background:var(--soft)}.guide-side .back-to-top{font-size:.82rem}.guide-side .sticky{max-height:calc(100vh - 3rem);overflow-y:auto;scrollbar-width:thin}
.article-body section[id]{scroll-margin-top:1.5rem}