:root{--ink:#17201b;--muted:#5c685f;--paper:#f5f1e8;--card:#fffdf7;--line:#d9d2c3;--accent:#b7f34a;--accent2:#1d6f5f;--max:1160px}
*{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(--ink);background:var(--paper);line-height:1.65}
a{color:var(--accent2);text-decoration-thickness:1px;text-underline-offset:3px}a:hover{color:#12483e}
.wrap{width:min(var(--max),calc(100% - 36px));margin:auto}
header{border-bottom:1px solid var(--line);background:rgba(245,241,232,.96);position:sticky;top:0;z-index:20;backdrop-filter:blur(8px)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}.brand{font-weight:900;letter-spacing:-.03em;color:var(--ink);text-decoration:none;font-size:1.15rem}.brand b{background:var(--accent);padding:3px 7px;border-radius:6px}
nav{display:flex;gap:18px;flex-wrap:wrap}nav a{font-size:.9rem;font-weight:700;color:var(--ink);text-decoration:none}
.hero{padding:82px 0 58px;border-bottom:1px solid var(--line)}.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.74rem;font-weight:900;color:var(--accent2)}
h1{font-size:clamp(2.5rem,7vw,5.5rem);line-height:.96;letter-spacing:-.065em;max-width:900px;margin:.18em 0}.dek{font-size:1.25rem;max-width:760px;color:var(--muted)}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.btn{display:inline-block;padding:12px 18px;border-radius:9px;background:var(--ink);color:white;text-decoration:none;font-weight:850}.btn.alt{background:var(--accent);color:var(--ink)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:0 2px 0 rgba(0,0,0,.03)}.card h3{margin-top:0}
section{padding:52px 0}.section-title{font-size:clamp(1.8rem,4vw,3rem);letter-spacing:-.04em;margin:0 0 20px}
main.article{display:grid;grid-template-columns:minmax(0,760px) 280px;gap:56px;padding:58px 0}.article h1{font-size:clamp(2.4rem,5vw,4.4rem)}.article h2{font-size:1.8rem;line-height:1.15;margin-top:2.2em}.article h3{font-size:1.2rem;margin-top:1.8em}.article p,.article li{font-size:1.05rem}.lede{font-size:1.25rem!important;color:var(--muted)}
.labnote{border-left:6px solid var(--accent);background:var(--card);padding:18px 20px;margin:28px 0}.steps{counter-reset:s}.step{counter-increment:s;display:grid;grid-template-columns:52px 1fr;gap:14px;margin:18px 0}.step:before{content:counter(s);display:grid;place-items:center;width:42px;height:42px;background:var(--accent);border-radius:50%;font-weight:900}
aside{position:sticky;top:98px;align-self:start}.asidebox{border:1px solid var(--line);background:var(--card);border-radius:14px;padding:20px;margin-bottom:16px}.asidebox h3{margin-top:0}
.disclosure{font-size:.86rem;color:var(--muted);border-top:1px solid var(--line);padding-top:12px}
.breadcrumb{font-size:.84rem;color:var(--muted);margin-bottom:22px}.breadcrumb a{color:var(--muted)}
footer{border-top:1px solid var(--line);padding:38px 0 60px;color:var(--muted)}footer .foot{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
@media(max-width:860px){.grid{grid-template-columns:1fr}.nav{align-items:flex-start;padding:16px 0;flex-direction:column}header{position:relative}main.article{grid-template-columns:1fr}aside{position:static}.hero{padding-top:50px}}