:root{color-scheme:light;--ink:#111516;--muted:#5f6a6e;--line:#dce3e5;--paper:#f4f6f7;--red:#9e2028;--cyan:#67bfc8;--green:#65b873;--gold:#b8892f}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;overflow-x:hidden;background:#fff;color:var(--ink);font-family:Arial,"Helvetica Neue",sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.site-header{position:sticky;z-index:20;top:0;padding:16px 20px 0}
.nav{display:flex;min-height:56px;max-width:1320px;margin:0 auto;align-items:center;justify-content:space-between;border:1px solid rgba(17,21,22,.09);border-radius:999px;background:rgba(255,255,255,.9);padding:0 18px;box-shadow:0 12px 42px rgba(23,33,36,.08);backdrop-filter:blur(18px)}
.brand{display:flex;align-items:center;gap:12px;font-size:13px;font-weight:700}.brand img{width:32px;height:32px;border-radius:50%;object-fit:cover}
.nav-links{display:flex;align-items:center;gap:28px;color:#5f6668;font-size:13px}.nav-links a:hover{color:#111516}
.nav-cta{border-radius:999px;background:var(--red);padding:11px 18px;color:#fff;font-size:12px;font-weight:700}
main{overflow:hidden}
.article-head{max-width:1200px;margin:0 auto;padding:92px 28px 46px}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;color:#748084;font:11px "SFMono-Regular",Consolas,monospace}.breadcrumb a:hover{color:var(--red)}
.eyebrow{margin:52px 0 18px;color:var(--red);font:11px "SFMono-Regular",Consolas,monospace;text-transform:uppercase}
h1{max-width:1050px;margin:0;font-size:clamp(3.2rem,7vw,7.2rem);font-weight:700;line-height:.91;letter-spacing:0}
.lead{max-width:780px;margin:30px 0 0;color:#536064;font-size:19px;line-height:1.7}
.hero-figure{width:100%;max-width:1360px;margin:0 auto;overflow:hidden;padding:0 20px}.hero-figure img{display:block;width:100%;max-width:100%;min-width:0;height:auto;max-height:760px;border-radius:8px;object-fit:cover;object-position:center;box-shadow:0 34px 90px rgba(46,65,71,.14)}
.caption{margin:12px 2px 0;color:#81898c;font:10px "SFMono-Regular",Consolas,monospace;text-transform:uppercase}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 260px;gap:100px;max-width:1120px;margin:0 auto;padding:92px 28px}
.article-body h2{margin:72px 0 20px;font-size:clamp(2rem,4vw,3.5rem);line-height:1.02}.article-body h2:first-child{margin-top:0}
.article-body h3{margin:42px 0 14px;font-size:21px}.article-body p,.article-body li{color:#4f5a5e;font-size:17px;line-height:1.82}.article-body strong{color:#182023}.article-body ul{padding-left:22px}.article-body li+li{margin-top:10px}
.article-body details{border-top:1px solid var(--line);padding:22px 0}.article-body details:last-child{border-bottom:1px solid var(--line)}.article-body summary{cursor:pointer;color:#172023;font-size:18px;font-weight:700;line-height:1.35}.article-body summary::marker{color:var(--red)}.article-body details p{margin:14px 0 0}
.fact-grid{display:grid;grid-template-columns:repeat(2,1fr);margin:38px 0;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.fact{min-height:150px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:24px}.fact span{color:var(--gold);font:10px "SFMono-Regular",Consolas,monospace}.fact b{display:block;margin-top:26px;font-size:16px}.fact p{margin:8px 0 0;font-size:13px;line-height:1.6}
.signal-band{margin:70px calc(50% - 50vw);background:#121617;color:#fff;padding:70px max(28px,calc((100vw - 1120px)/2))}.signal-band h2{max-width:820px;margin:0;color:#fff}.signal-band p{max-width:720px;color:rgba(255,255,255,.62)}
.aside{align-self:start;position:sticky;top:96px;border-top:2px solid var(--red);padding-top:18px}.aside b{font-size:13px}.aside a{display:block;border-bottom:1px solid var(--line);padding:14px 0;color:#5d676a;font-size:13px}.aside a:hover{color:var(--red)}
.note{border-left:3px solid var(--cyan);background:var(--paper);margin:36px 0;padding:22px 24px}.note p{margin:0;font-size:14px}
.cta-band{background:var(--paper);padding:86px 24px}.cta-inner{display:flex;max-width:1120px;margin:0 auto;align-items:end;justify-content:space-between;gap:40px}.cta-inner h2{max-width:760px;margin:0;font-size:clamp(2.6rem,6vw,5.8rem);line-height:.94}.cta-inner a{flex:none;border-radius:999px;background:var(--red);padding:16px 22px;color:#fff;font-size:13px;font-weight:700}
.related{max-width:1120px;margin:0 auto;padding:82px 28px}.related h2{font-size:34px}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.related-card{min-height:210px;border:1px solid var(--line);border-radius:8px;padding:24px;transition:transform .2s,box-shadow .2s}.related-card:hover{transform:translateY(-3px);box-shadow:0 18px 45px rgba(46,65,71,.1)}.related-card span{color:var(--red);font:10px "SFMono-Regular",Consolas,monospace}.related-card h3{margin:56px 0 0;font-size:19px;line-height:1.2}
footer{background:#111516;color:#fff;padding:42px 24px}.footer-inner{display:flex;max-width:1120px;margin:0 auto;align-items:end;justify-content:space-between;gap:30px}.footer-inner p{margin:8px 0 0;color:rgba(255,255,255,.45);font-size:12px}.footer-inner a{color:rgba(255,255,255,.72);font-size:13px}
.footer-links{display:flex;align-items:center;gap:24px}.library-head{padding-bottom:70px}.library-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));max-width:1200px;margin:0 auto;padding:0 28px 110px}.library-card{display:flex;min-height:390px;flex-direction:column;border-top:1px solid var(--line);padding:34px 38px 32px;transition:background-color .2s,color .2s}.library-card:nth-child(odd){border-right:1px solid var(--line)}.library-card:hover{background:#111516;color:#fff}.library-card>span{color:var(--red);font:10px "SFMono-Regular",Consolas,monospace}.library-card h2{max-width:470px;margin:68px 0 18px;font-size:clamp(2rem,3vw,3.15rem);line-height:1}.library-card p{max-width:520px;margin:0;color:#667175;font-size:15px;line-height:1.7}.library-card:hover p{color:rgba(255,255,255,.58)}.library-card b{margin-top:auto;padding-top:38px;font:10px "SFMono-Regular",Consolas,monospace}.library-principle{display:grid;grid-template-columns:1.35fr .65fr;gap:80px;background:#111516;padding:100px max(28px,calc((100vw - 1120px)/2));color:#fff}.library-principle span{color:var(--gold);font:10px "SFMono-Regular",Consolas,monospace}.library-principle h2{max-width:800px;margin:24px 0 0;font-size:clamp(2.8rem,5vw,5.7rem);line-height:.94}.library-principle>p{align-self:end;color:rgba(255,255,255,.58);font-size:17px;line-height:1.75}
@media(max-width:800px){.nav{min-width:0;gap:8px;overflow:hidden}.brand{min-width:0}.nav-links{display:none}.nav-cta{flex:none;padding:10px 13px;white-space:nowrap}.article-head{min-width:0;padding:70px 22px 34px}.eyebrow{margin-top:38px}h1{max-width:100%;overflow-wrap:anywhere;font-size:clamp(2.3rem,11.5vw,4rem)}.lead{font-size:16px}.hero-figure{padding:0 12px}.article-layout{grid-template-columns:1fr;padding:64px 22px}.aside{display:none}.fact-grid{grid-template-columns:1fr}.signal-band{margin:54px -22px;padding:56px 22px}.cta-inner{align-items:start;flex-direction:column}.related-grid{grid-template-columns:1fr}.footer-inner{align-items:start;flex-direction:column}}
@media(max-width:800px){.footer-links{align-items:flex-start;flex-direction:column;gap:12px}.library-grid{grid-template-columns:1fr;padding:0 20px 70px}.library-card{min-height:330px;border-right:0!important;padding:28px 20px}.library-card h2{margin-top:48px}.library-principle{grid-template-columns:1fr;gap:46px;padding:72px 22px}.library-principle>p{align-self:start}}
@media(max-width:460px){.site-header{padding-inline:10px}.nav{padding-inline:12px}.brand span{display:none}.brand img{width:30px;height:30px}.nav-cta{font-size:10px;padding:9px 11px}.library-card h2,.library-card p{overflow-wrap:anywhere}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.related-card{transition:none}}