:root{
  --navy:#172033;--navy2:#1E2A44;--ivory:#F5F0E7;--paper:#FBFAF7;
  --graphite:#22252B;--muted:#6F737A;--line:#DAD6CF;--gold:#B89A68;
  --gold-dark:#8E7045;--white:#fff;--max:1180px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{
  margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--graphite);
  background:radial-gradient(circle at 12% 8%,rgba(184,154,104,.045),transparent 18%),
  radial-gradient(rgba(23,32,51,.018) .7px,transparent .8px),var(--paper);
  background-size:auto,16px 16px,auto;-webkit-font-smoothing:antialiased
}
a{color:inherit}.wrap{width:min(calc(100% - 44px),var(--max));margin:0 auto}
header{position:sticky;top:0;z-index:50;background:rgba(251,250,247,.92);backdrop-filter:blur(14px);border-bottom:1px solid rgba(218,214,207,.8)}
.nav{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand img{height:32px;width:auto;display:block}
nav{display:flex;align-items:center;gap:27px}nav a{text-decoration:none;font-size:.84rem;color:#4B5058}.nav-cta{border:1px solid var(--navy);padding:10px 16px;color:var(--navy);font-weight:700}

.hero{padding:72px 0 58px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-150px;top:-170px;width:430px;height:430px;border:1px solid rgba(184,154,104,.17);border-radius:50%}
.breadcrumb{font-size:.76rem;color:#8A8E95;margin-bottom:20px}.breadcrumb a{text-decoration:none;color:#6F737A}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center}
.kicker{display:flex;align-items:center;gap:12px;font-size:.7rem;letter-spacing:.15em;text-transform:uppercase;color:var(--gold-dark);font-weight:760;margin-bottom:21px}.kicker:before{content:"";width:38px;height:2px;background:var(--gold)}
h1,h2,h3{font-family:Georgia,"Times New Roman",serif;color:var(--navy);font-weight:500}
h1{font-size:clamp(3rem,5.5vw,5.1rem);line-height:.97;letter-spacing:-.05em;margin:0;max-width:820px}
.hero-copy{font-size:1.02rem;line-height:1.82;color:#61656C;max-width:740px;margin:25px 0 0}
.hero-note{background:#fff;border:1px solid var(--line);padding:27px;box-shadow:0 18px 44px rgba(23,32,51,.07);border-radius:4px 18px 4px 16px}
.hero-note .mini{font-size:.68rem;text-transform:uppercase;letter-spacing:.13em;color:var(--gold-dark);font-weight:760}
.hero-note h2{font-size:1.75rem;line-height:1.08;margin:14px 0 12px}.hero-note p{margin:0;color:#6D7178;line-height:1.7;font-size:.9rem}

.section{padding:72px 0;border-bottom:1px solid var(--line)}.section.soft{background:linear-gradient(120deg,var(--ivory),#F8F2EA)}
.section-head{display:grid;grid-template-columns:.32fr .68fr;gap:50px;align-items:start;margin-bottom:38px}
.label{display:inline-flex;align-items:center;gap:9px;font-size:.69rem;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-dark);font-weight:760}
.label:before{content:"";width:23px;height:2px;background:var(--gold)}
.section h2{font-size:clamp(2.1rem,4vw,3.5rem);line-height:1.04;letter-spacing:-.035em;margin:0}
.intro{margin:13px 0 0;color:#6B7077;line-height:1.78;max-width:760px}

.alpha{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}.alpha a{width:38px;height:38px;border:1px solid var(--line);background:#fff;display:flex;align-items:center;justify-content:center;text-decoration:none;font-size:.8rem;color:#59616A;border-radius:50%}
.glossary-group{margin-top:38px}.glossary-letter{font-family:Georgia,"Times New Roman",serif;font-size:2.4rem;color:var(--navy);margin:0 0 18px;padding-bottom:9px;border-bottom:1px solid var(--line)}
.term-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
.term-card{display:block;text-decoration:none;background:#fff;border:1px solid var(--line);padding:22px;border-radius:4px 14px 4px 12px;box-shadow:0 8px 24px rgba(23,32,51,.03);transition:.2s ease}
.term-card:hover{transform:translateY(-2px);border-color:#CBB993}.term-card h3{font-size:1.28rem;margin:0 0 8px}.term-card p{margin:0;color:#6E737A;font-size:.85rem;line-height:1.62}.term-card .arrow{display:block;color:var(--gold-dark);margin-top:14px}

.article{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:38px;align-items:start}
.article-main{background:#fff;border:1px solid var(--line);padding:34px;border-radius:4px 18px 4px 16px}
.article-main h2{font-size:2rem;margin:30px 0 12px}.article-main h2:first-child{margin-top:0}.article-main p{color:#5F646B;line-height:1.82;margin:0 0 15px}
.definition{font-size:1.18rem;line-height:1.78;color:#3E444C;border-left:3px solid var(--gold);padding-left:18px}
.example{background:#F8F3E9;border:1px solid #E5D7BD;padding:18px 19px;margin:24px 0;border-radius:4px 12px 4px 10px}.example strong{display:block;color:var(--navy);margin-bottom:7px}.example p{margin:0;color:#64686E;font-size:.9rem}
.side{position:sticky;top:98px;background:#fff;border:1px solid var(--line);padding:23px;border-radius:4px 14px 4px 12px}
.side strong{display:block;color:var(--navy);margin-bottom:13px}.side a{display:block;text-decoration:none;color:#646A72;font-size:.83rem;padding:8px 0;border-bottom:1px solid #ECE8E1}.side a:last-child{border-bottom:0}
.notice{margin-top:22px;padding:14px 16px;border-left:3px solid var(--gold);background:#F8F3E9;color:#686C73;font-size:.81rem;line-height:1.6}
.btn{min-height:49px;padding:0 20px;display:inline-flex;align-items:center;justify-content:center;text-decoration:none;font-size:.86rem;font-weight:720}
.btn-primary{background:var(--navy);color:#fff;border:1px solid var(--navy)}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.cta{padding:72px 0;background:var(--navy);color:#fff}.cta-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:56px;align-items:end}.cta h2{font-size:clamp(2.3rem,4.2vw,3.9rem);color:#fff;line-height:1;margin:0}.cta p{color:#BCC4CF;line-height:1.75;margin:0 0 24px}.cta .btn-primary{background:#fff;color:var(--navy);border-color:#fff}
footer{background:#101722;color:#9EA8B5;padding:46px 0 28px}.footer-top{display:grid;grid-template-columns:1.3fr repeat(3,.7fr);gap:40px;padding-bottom:32px;border-bottom:1px solid #2A3342}.footer-brand img{height:28px;filter:brightness(0) invert(1)}.footer-brand p{font-size:.83rem;line-height:1.7;max-width:330px;margin:18px 0 0}.footer-col strong{display:block;color:#fff;font-size:.81rem;margin-bottom:14px}.footer-col a{display:block;text-decoration:none;color:#9EA8B5;font-size:.81rem;margin:10px 0}.footer-bottom{padding-top:22px;font-size:.74rem;color:#737E8B;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
@media(max-width:900px){nav a:not(.nav-cta){display:none}.hero-grid,.section-head,.article,.cta-grid{grid-template-columns:1fr;gap:30px}.side{position:static}.term-grid{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.wrap{width:min(calc(100% - 28px),var(--max))}.brand img{height:27px}.nav{min-height:70px}.nav-cta{padding:9px 11px;font-size:.76rem}h1{font-size:3rem}.section{padding:58px 0}.term-grid{grid-template-columns:1fr}.article-main{padding:24px}}