:root{
  --paper:#f1efe8;--paper2:#e7e4dc;--paper3:#d9d5cb;--ink:#10100f;--ink2:#383834;
  --ink3:#69675f;--line:#cbc7bc;--signal:#f04f3d;--est:#d7ff48;--open:#a9c7ff;
  --disp:'Manrope',system-ui,sans-serif;--mono:'Space Mono',ui-monospace,Consolas,monospace;
  --max:1180px
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;background:var(--paper)}
body{font-family:var(--disp);color:var(--ink);background:var(--paper);line-height:1.65}
a{color:inherit}
.skip{position:fixed;left:1rem;top:-5rem;z-index:100;background:var(--est);padding:.7rem 1rem;font-weight:800}
.skip:focus{top:1rem}
.progress{position:fixed;left:0;top:0;width:0;height:3px;background:var(--signal);z-index:120}
.wrap{width:min(var(--max),calc(100% - 2.5rem));margin:auto}
.site-header{position:sticky;top:0;z-index:80;background:rgba(241,239,232,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.site-header .wrap{min-height:68px;display:flex;align-items:center;gap:1.3rem}
.brand{font-weight:800;letter-spacing:-.04em;text-decoration:none;white-space:nowrap}
.brand b{color:var(--signal)}
.site-nav{margin-left:auto;display:flex;align-items:center;gap:1.1rem;font-family:var(--mono);font-size:.7rem;text-transform:uppercase;letter-spacing:.05em}
.site-nav>a{text-decoration:none;border-bottom:1px solid transparent}
.site-nav>a:hover{border-color:var(--ink)}
.lang{display:flex;border:1px solid var(--ink);border-radius:999px;padding:.2rem;gap:2px}
.lang a{text-decoration:none;padding:.12rem .5rem;border-radius:999px;color:var(--ink3)}
.lang a.on{background:var(--ink);color:var(--paper);font-weight:700}
a:focus-visible,button:focus-visible{outline:3px solid var(--open);outline-offset:3px}
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:4.8rem 0 4.2rem;background:
  linear-gradient(90deg,rgba(16,16,15,.045) 1px,transparent 1px),
  linear-gradient(rgba(16,16,15,.045) 1px,transparent 1px),var(--paper);background-size:42px 42px}
.hero .wrap{position:relative;z-index:2}
.crumbs{font-family:var(--mono);font-size:.68rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:2.4rem}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:.45rem;color:var(--ink3)}
.crumbs li+li:before{content:'→';margin-right:.45rem;color:var(--signal)}
.crumbs a{text-underline-offset:3px}
.kicker{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;margin-bottom:1rem}
.kicker b{background:var(--est);padding:.22rem .45rem}
h1{font-size:clamp(2.7rem,7vw,6.6rem);line-height:.92;letter-spacing:-.075em;max-width:960px}
h1 em{font-style:normal;color:var(--signal)}
.dek{font-size:clamp(1.05rem,2vw,1.35rem);max-width:780px;margin-top:1.7rem;color:var(--ink2);line-height:1.55}
.meta-row{display:flex;gap:.6rem;flex-wrap:wrap;margin-top:1.7rem;font-family:var(--mono);font-size:.67rem;text-transform:uppercase}
.tag{border:1px solid var(--ink);border-radius:999px;padding:.25rem .65rem;background:var(--paper)}
.tag.reviewed{background:var(--est)}
.tag.open{background:var(--open)}
.hero-orbit{position:absolute;right:-3rem;top:50%;width:34rem;height:34rem;transform:translateY(-50%);opacity:.3}
.hero-orbit:before,.hero-orbit:after{content:'';position:absolute;inset:14%;border:2px solid var(--ink);border-radius:50%;animation:orbit 9s ease-in-out infinite}
.hero-orbit:after{inset:30% 2%;border-color:var(--signal);animation-delay:-4.5s}
.hero-orbit i{position:absolute;left:50%;top:50%;width:9rem;height:9rem;transform:translate(-50%,-50%);border-radius:50%;background:var(--ink);box-shadow:0 0 0 1.2rem var(--open),0 0 0 2.4rem rgba(215,255,72,.75)}
@keyframes orbit{0%,100%{transform:scale(.82);border-radius:44% 56% 48% 52%}50%{transform:scale(1.07);border-radius:56% 44% 54% 46%}}
.page-grid{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:5rem;padding:4rem 0 6rem;align-items:start}
.article{min-width:0}
.toc{position:sticky;top:95px;border-top:4px solid var(--ink);padding-top:1rem;font-family:var(--mono);font-size:.72rem}
.toc strong{display:block;text-transform:uppercase;margin-bottom:.8rem}
.toc ol{list-style:none;display:grid;gap:.55rem}
.toc a{color:var(--ink3);text-decoration:none}
.toc a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.article section{padding:1rem 0 3.4rem;scroll-margin-top:95px}
.article h2{font-size:clamp(1.8rem,4vw,3.2rem);line-height:1.02;letter-spacing:-.055em;margin-bottom:1.25rem}
.article h3{font-size:1.18rem;line-height:1.25;margin:2rem 0 .7rem}
.article p{font-size:1.04rem;max-width:760px;color:var(--ink2);margin:.85rem 0}
.article strong{color:var(--ink)}
.answer{font-size:clamp(1.25rem,2.4vw,1.65rem)!important;line-height:1.45!important;color:var(--ink)!important;border-left:8px solid var(--signal);padding-left:1.25rem;margin-bottom:2rem!important}
.equation{font-family:var(--mono);font-size:clamp(.8rem,2vw,1.08rem);overflow:auto;background:var(--ink);color:var(--paper);padding:1.2rem 1.4rem;margin:1.5rem 0;border-left:8px solid var(--open)}
.note{border:1px solid var(--ink);padding:1.15rem 1.25rem;margin:1.5rem 0;background:#fff}
.note b{font-family:var(--mono);font-size:.7rem;text-transform:uppercase;background:var(--est);padding:.12rem .35rem;margin-right:.35rem}
.ledger{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--ink);border-left:1px solid var(--ink);margin:1.7rem 0}
.ledger>div{border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);padding:1.25rem;background:#fff}
.ledger h3{margin:0 0 .45rem;font-family:var(--mono);font-size:.75rem;text-transform:uppercase}
.ledger p{font-size:.93rem;margin:0}
.status-yes{border-top:7px solid var(--est)!important}.status-no{border-top:7px solid var(--signal)!important}.status-open{border-top:7px solid var(--open)!important}
.evidence-table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:.92rem;background:#fff}
.evidence-table th,.evidence-table td{border:1px solid var(--ink);text-align:left;vertical-align:top;padding:.85rem}
.evidence-table th{font-family:var(--mono);font-size:.68rem;text-transform:uppercase;background:var(--ink);color:var(--paper)}
.source-list{display:grid;gap:.7rem;margin-top:1.5rem}
.source{background:#fff;border:1px solid var(--line);padding:1rem 1.15rem}
.source b{display:block;line-height:1.35}
.source span{font-family:var(--mono);font-size:.66rem;color:var(--ink3)}
.source a{color:#284f87;text-underline-offset:3px;overflow-wrap:anywhere}
.process{counter-reset:step;display:grid;gap:.8rem;margin:1.5rem 0}
.process>div{counter-increment:step;display:grid;grid-template-columns:42px 1fr;gap:1rem;border:1px solid var(--ink);padding:1rem;background:#fff}
.process>div:before{content:counter(step,decimal-leading-zero);font-family:var(--mono);font-weight:700;color:var(--signal)}
.process h3{margin:0 0 .3rem;font-size:1rem}.process p{margin:0;font-size:.94rem}
.cta{margin-top:2rem;background:var(--ink);color:var(--paper);padding:2rem;display:grid;grid-template-columns:1fr auto;gap:2rem;align-items:center}
.cta h2{margin:0 0 .5rem;color:var(--paper)}.cta p{margin:0;color:#cbc7bc}
.button{display:inline-block;background:var(--est);color:var(--ink);font-family:var(--mono);font-weight:700;font-size:.72rem;text-transform:uppercase;text-decoration:none;padding:.8rem 1rem;border-radius:999px;white-space:nowrap}
.more-guides{border-top:1px solid var(--ink);padding:3.2rem 0 4rem}
.more-guides h2{font-size:1.5rem;letter-spacing:-.03em;margin-bottom:1.2rem}
.guide-links{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--ink);border:1px solid var(--ink)}
.guide-links a{background:var(--paper);padding:1.1rem;text-decoration:none;font-weight:700}
.guide-links a:hover{background:var(--open)}
.site-footer{background:var(--ink);color:var(--paper);padding:2rem 0;font-family:var(--mono);font-size:.67rem}
.site-footer .wrap{display:flex;justify-content:space-between;gap:2rem}.site-footer a{color:var(--est)}
.rv{opacity:0;transform:translateY(18px);transition:opacity .55s ease,transform .55s ease}.rv.in{opacity:1;transform:none}
@media(max-width:850px){
  .site-nav>a:not(.keep){display:none}.page-grid{grid-template-columns:1fr;gap:1rem}.toc{position:relative;top:0;order:-1;border:1px solid var(--line);padding:1rem}.hero-orbit{right:-18rem;opacity:.18}.guide-links{grid-template-columns:1fr}.cta{grid-template-columns:1fr}.ledger{grid-template-columns:1fr}
}
@media(max-width:560px){.wrap{width:min(100% - 1.4rem,var(--max))}.site-header .wrap{gap:.65rem}.site-nav{gap:.55rem}.site-nav>a.keep{display:none}.hero{padding:3rem 0}.hero h1 em{display:block}.crumbs li{min-width:0;max-width:100%;overflow-wrap:anywhere}.page-grid{padding-top:2rem}.evidence-table{font-size:.8rem}.evidence-table th,.evidence-table td{padding:.55rem}.site-footer .wrap{display:block}.site-footer p+p{margin-top:.7rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.hero-orbit:before,.hero-orbit:after{animation:none}.rv{opacity:1;transform:none;transition:none}}