.concept-hero{background:var(--paper);padding:70px 0 60px}.concept-hero h1{font-size:46px;line-height:1.45;font-weight:550;letter-spacing:1px;margin:0 0 32px}.concept-intro{max-width:900px}.concept-intro p{font-size:18px;line-height:2.05;margin:0 0 18px}.concept-intro p:last-child{margin:0}.concept-nav{border-bottom:1px solid var(--line)}.concept-nav .wrap{display:flex;flex-wrap:wrap;gap:18px 36px;padding-top:22px;padding-bottom:22px;font-size:14px}.concept-nav a:hover,.concept-source a:hover{color:var(--red)}.concept-section-intro{font-size:16px;line-height:2;max-width:840px;margin:-10px 0 35px}.concept-row{display:grid;grid-template-columns:320px minmax(0,1fr);gap:60px;padding:32px 0;border-top:1px solid var(--line);scroll-margin-top:122px}.concept-term-title{display:flex;align-items:baseline;gap:22px}.concept-term-title>span{font-size:11px;color:var(--red)}.concept-term-title :is(h2,h3){font-size:25px;line-height:1.6;font-weight:550;margin:0}.concept-row p,.concept-prose p{font-size:17px;line-height:2.05;margin:0 0 18px}.concept-row p:last-child,.concept-prose p:last-child{margin:0}.concept-section{border-top:1px solid var(--line)}.concept-section:nth-of-type(even){background:var(--paper)}.concept-layout{display:grid;grid-template-columns:320px minmax(0,1fr);gap:60px}.concept-details{display:grid;grid-template-columns:130px minmax(0,1fr);gap:16px 25px;font-size:15px;line-height:2;margin:28px 0 0}.concept-details dt{font-weight:550}.concept-details dd{margin:0}.concept-source{border-top:1px solid var(--line);padding:32px 0 40px}.concept-source nav{display:flex;flex-wrap:wrap;gap:16px 35px;font-size:14px}.concept-source p{font-size:12px;line-height:1.9;color:var(--muted);margin:26px 0 0}.methods-grid a{display:block}.methods-grid a:hover{color:var(--red)}
@media(max-width:1000px){.concept-row,.concept-layout{grid-template-columns:250px minmax(0,1fr);gap:40px}.concept-hero h1{font-size:40px}.concept-term-title :is(h2,h3){font-size:23px}}
@media(max-width:700px){.concept-hero{padding:42px 0 36px}.concept-hero h1{font-size:31px;letter-spacing:0;margin-bottom:24px}.concept-intro p{font-size:16px}.concept-nav .wrap{gap:12px 24px;font-size:13px;padding-top:18px;padding-bottom:18px}.concept-row,.concept-layout{grid-template-columns:1fr;gap:19px}.concept-row{padding:25px 0;scroll-margin-top:98px}.concept-term-title :is(h2,h3){font-size:23px}.concept-row p,.concept-prose p,.concept-section-intro{font-size:15px}.concept-details{grid-template-columns:1fr;gap:5px;font-size:14px}.concept-details dd{margin-bottom:15px}.concept-source nav{font-size:13px;gap:14px 24px}}

/* Brand accents and a compact four-part capability layout. */
.concept-page :is(h1,h2,h3){color:var(--red)}
.concept-hero h1:before{content:"";display:block;width:44px;height:4px;background:var(--red);margin-bottom:24px}
.concept-term-title>span{font-size:20px;font-variant-numeric:tabular-nums;line-height:1;color:var(--red);font-weight:500}
.concept-section{scroll-margin-top:116px}
.concept-layout>h2{margin-top:0}
.concept-nav a:focus-visible,.concept-source a:focus-visible{outline:2px solid var(--red);outline-offset:5px}
.concept-capabilities .concept-terms>.wrap{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.concept-capabilities .concept-row{display:flex;flex-direction:column;gap:22px;padding:32px;border:1px solid var(--line);border-top:3px solid var(--red);background:var(--paper)}
.concept-capabilities .concept-row:nth-child(2),.concept-capabilities .concept-row:nth-child(3){background:white}
.concept-capabilities .concept-term-title{gap:18px}
@media(max-width:700px){.concept-hero h1:before{margin-bottom:20px}.concept-capabilities .concept-terms>.wrap{grid-template-columns:1fr;gap:18px}.concept-capabilities .concept-row{padding:25px 22px;gap:16px}.concept-section{scroll-margin-top:98px}}