:root{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6;color:#171717;background:#fafafa}body{margin:0}.site-header{position:sticky;top:0;z-index:30;background:#fff;border-bottom:1px solid #d9d9d9}.header-main{display:flex;justify-content:space-between;gap:2rem;align-items:center;padding:.85rem max(5vw,1.2rem)}.brand{display:flex;align-items:center;gap:.7rem;font-weight:800;text-decoration:none;color:#111}.brand-mark{width:34px;height:34px;flex:0 0 auto}.top-nav{display:flex;gap:1rem;flex-wrap:wrap}.top-nav a{color:#333;text-decoration:none}.header-principle{display:flex;align-items:baseline;gap:1rem;padding:.62rem max(5vw,1.2rem);border-top:1px solid #e6e6e6;background:#f4f8f7}.header-principle span{font-size:.72rem;font-weight:850;letter-spacing:.12em;text-transform:uppercase;white-space:nowrap;color:#0b5f59}.header-principle strong{font-size:1rem;line-height:1.35}.site-shell{max-width:1440px;margin:0 auto;display:grid;grid-template-columns:270px minmax(0,1fr);align-items:start}.research-sidebar{position:sticky;top:112px;max-height:calc(100vh - 112px);overflow-y:auto;align-self:start;padding:2.75rem 1.6rem 5rem 1.2rem;border-right:1px solid #ddd}.sidebar-home{display:block;margin-bottom:1.8rem;padding:.55rem .65rem;font-weight:750;text-decoration:none;color:#222;border-radius:4px}.sidebar-section{margin-bottom:1.65rem}.sidebar-title{font-size:.72rem;font-weight:850;letter-spacing:.12em;text-transform:uppercase;color:#666;margin:0 0 .55rem .65rem}.research-sidebar nav{display:flex;flex-direction:column;gap:.14rem}.research-sidebar a,.mobile-explore-links a{display:block;padding:.5rem .65rem;border-radius:4px;color:#333;text-decoration:none;font-size:.92rem;line-height:1.35}.research-sidebar a:hover,.mobile-explore-links a:hover{background:#f0f2f2}.research-sidebar a.active,.mobile-explore-links a.active,.sidebar-home.active{font-weight:800;background:#eaf4f2;color:#0b5f59;border-left:3px solid #0d9488}.content-main{min-width:0;padding:2.75rem 2rem 5rem 3.5rem}.article-column{max-width:900px;min-width:0}.mobile-explore{display:none;margin:0 0 1.5rem;border:1px solid #ddd;background:#fff}.mobile-explore summary{cursor:pointer;font-weight:750;padding:.8rem 1rem}.mobile-explore-links{padding:0 .65rem .75rem}.article-sequence{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;border-top:1px solid #ddd;margin-top:3.5rem;padding-top:1.5rem}.article-sequence>div{min-width:0}.sequence-next{text-align:right}.sequence-label{display:block;font-size:.75rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:#666;margin-bottom:.35rem}.article-sequence a{font-weight:700;text-decoration:none}article h1{font-size:clamp(2.1rem,5vw,4rem);line-height:1.06;letter-spacing:-.035em;margin-top:0}article h2{margin-top:2.4rem;line-height:1.2}article h3{margin-top:1.8rem}article p,article li{max-width:78ch}article blockquote{margin:1.5rem 0;padding:.2rem 1.2rem;border-left:3px solid #777;background:#fff}table{border-collapse:collapse;width:100%;display:block;overflow-x:auto}th,td{border:1px solid #ddd;padding:.6rem;text-align:left;vertical-align:top}code{background:#eee;padding:.12rem .3rem;border-radius:3px}pre code{display:block;padding:1rem;overflow:auto}a{color:#174ea6}footer{border-top:1px solid #ddd;padding:2rem max(5vw,1.2rem);background:#fff}footer p{max-width:1440px;margin:auto;font-weight:600}@media(max-width:1000px){.site-shell{grid-template-columns:230px minmax(0,1fr)}.content-main{padding-left:2rem}.research-sidebar{padding-right:1rem}}@media(max-width:850px){.site-header{position:static}.site-shell{display:block}.research-sidebar{display:none}.content-main{padding:2rem 1.2rem 4rem}.article-column{max-width:none}.mobile-explore{display:block}.article-sequence{grid-template-columns:1fr}.sequence-next{text-align:left}.header-principle{align-items:flex-start;flex-direction:column;gap:.15rem}}@media(max-width:700px){.header-main{align-items:flex-start;flex-direction:column;gap:.7rem}.top-nav{gap:.75rem}.brand-mark{width:30px;height:30px}.header-principle strong{font-size:.95rem}}