:root{--ink:#18302e;--muted:#586864;--line:#dce5df;--paper:#fff;--soft:#f1f5ef;--accent:#ffd166;--accent-hover:#f1bc43;--max:1120px;color-scheme:light}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.65 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:#215e4f;text-underline-offset:4px}a:focus-visible{outline:3px solid #337bd0;outline-offset:5px}h1,h2,h3,p,ul,ol{margin-top:0}h1,h2,h3{line-height:1.16;letter-spacing:-.035em}h1{font-size:clamp(2.3rem,4.6vw,4.3rem);margin-bottom:24px;max-width:850px}h2{font-size:clamp(1.5rem,2.5vw,2rem);margin-bottom:20px}h3{font-size:1.2rem}p{margin-bottom:20px}li{margin-bottom:9px}.container{width:min(var(--max),calc(100% - 48px));margin:auto}.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.98);border-bottom:1px solid var(--line)}.header-inner{max-width:var(--max);min-height:84px;margin:auto;padding:16px 0;display:flex;align-items:center;justify-content:space-between;gap:20px}.site-title{text-decoration:none;font-size:22px;font-weight:800;letter-spacing:-.04em;color:var(--ink)}.site-title span{font-weight:400}.site-header nav{display:flex;align-items:center;gap:28px}.nav-guide{font-size:14px;text-decoration:none;font-weight:600}.button{display:inline-flex;align-items:center;justify-content:center;gap:17px;background:var(--accent);color:#172d29;font-weight:800;text-decoration:none;border:1px solid #e8b94e;border-radius:6px;padding:15px 25px;min-height:52px;line-height:1.2}.button:hover{background:var(--accent-hover)}.button span{font-size:21px}.header-cta{font-size:14px;min-height:46px;padding:11px 18px}.preview-strip{background:#eef3f9;color:#4f6077;padding:7px 24px;text-align:center;font-size:12px}.hero{padding:65px 0 58px;display:grid;grid-template-columns:minmax(0,1.55fr) minmax(290px,.85fr);gap:58px;align-items:center}.eyebrow{text-transform:uppercase;letter-spacing:.15em;font-weight:750;font-size:11px;color:#517469;margin-bottom:17px}.lead{font-size:19px;line-height:1.65;max-width:680px;color:#4b615a;margin-bottom:28px}.cta-note{font-size:12px;line-height:1.5;color:var(--muted);margin:12px 0 0;max-width:400px}.product-summary{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:30px}.product-summary h2{font-size:32px}.product-summary ul{list-style:none;padding:6px 0;margin-bottom:20px}.product-summary li{padding-bottom:10px;border-bottom:1px solid #dbe3d5}.fine-print{font-size:12px;line-height:1.6;color:var(--muted);margin:0}.content-layout{display:grid;grid-template-columns:minmax(0,740px) 260px;gap:68px;align-items:start;border-top:1px solid var(--line);padding-top:46px}.prose h2{margin-top:38px}.prose h2:first-child{margin-top:0}.prose h3{margin-top:29px}.prose ul,.prose ol{padding-left:23px}.prose blockquote{margin:26px 0;padding:14px 22px;border-left:4px solid #9ebaaa;background:var(--soft)}.prose blockquote p:last-child{margin:0}.prose table{border-collapse:collapse;width:100%;font-size:15px;margin:22px 0}.prose th,.prose td{border-bottom:1px solid var(--line);text-align:left;padding:12px;vertical-align:top}.prose th{background:var(--soft)}.reading-note{background:#f7f8f5;padding:24px;border-radius:6px;font-size:14px}.reading-note a{font-size:12px}.guide-section{padding:60px 0 12px}.guide-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:17px}.guide-card{display:block;padding:25px;border:1px solid var(--line);border-radius:8px;text-decoration:none;color:var(--ink)}.guide-card:hover{background:var(--soft)}.guide-card h3{margin-bottom:13px}.guide-card p{font-size:14px;color:var(--muted);margin-bottom:20px}.guide-card span{font-size:13px;font-weight:750}.breadcrumbs{display:flex;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--muted);padding-top:26px}.article-hero{display:block;padding-top:38px;max-width:900px}.article-hero h1{font-size:clamp(2.1rem,4.2vw,3.5rem)}.related-section{margin-top:43px;padding:28px;background:var(--soft);border:1px solid var(--line);border-radius:8px}.related-section h2{font-size:23px}.related-section ul{margin-bottom:0}.sources{border-top:1px solid var(--line);margin-top:44px;padding-top:28px;font-size:13px;color:var(--muted)}.sources h2{font-size:19px}.site-footer{margin-top:55px;padding:34px 0;background:#f5f6f2;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.site-footer p{max-width:850px;margin-bottom:12px}.site-footer nav{display:flex;gap:25px;margin-top:20px}.mobile-buy{display:none}.skip-link{position:absolute;left:14px;top:-100px;padding:9px;background:var(--paper);z-index:30}.skip-link:focus{top:12px}
@media(max-width:1168px){.header-inner{padding-left:24px;padding-right:24px}.hero{gap:30px}.content-layout{gap:35px;grid-template-columns:minmax(0,1fr) 235px}}
@media(max-width:760px){body{font-size:16px;padding-bottom:calc(84px + env(safe-area-inset-bottom,0px))}.container{width:calc(100% - 36px)}.header-inner{min-height:67px;padding:15px 18px}.site-title{font-size:20px}.header-cta{display:none}.site-header nav{gap:10px}.nav-guide{font-size:12px}.preview-strip{font-size:10px;padding:6px 16px}.hero{display:block;padding:36px 0 33px}.hero h1{font-size:2.7rem;line-height:1.08;margin-bottom:19px}.lead{font-size:17px;margin-bottom:23px}.primary-cta{width:100%;min-height:55px}.cta-note{font-size:11px}.product-summary{margin-top:30px;padding:23px}.product-summary h2{font-size:27px}.content-layout{display:block;padding-top:29px}.reading-note{margin-top:28px}.guide-section{padding-top:37px}.guide-grid{grid-template-columns:1fr}.guide-card{padding:22px}.breadcrumbs{font-size:11px;padding-top:19px}.article-hero h1{font-size:2.3rem}.article-hero{padding-top:25px}.mobile-buy{display:block;position:fixed;z-index:20;bottom:0;left:0;right:0;padding:12px 18px calc(12px + env(safe-area-inset-bottom,0px));background:#fff;border-top:1px solid var(--line)}.mobile-buy .button{width:100%;min-height:52px}.prose table{font-size:13px}.prose th,.prose td{padding:8px}.site-footer{margin-top:40px}.sources{overflow-wrap:anywhere}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}