:root{--ink:#000;--paper:#fff;--max:1180px}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;background:var(--paper);color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}img{display:block;max-width:100%;height:auto}
.mono{font-family:'JetBrains Mono',ui-monospace,monospace;font-variant-numeric:tabular-nums}
.container{width:min(var(--max),calc(100% - 3rem));margin-inline:auto}
.site-nav{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid #000}
.nav-in{height:60px;display:flex;align-items:center;gap:2rem}.brand{font-size:1.05rem;font-weight:850;letter-spacing:-.03em;white-space:nowrap}.brand::before{content:'';display:inline-block;width:8px;height:8px;border-radius:50%;background:#000;margin-right:.55rem}
.nav-links{display:flex;align-items:center;gap:1.3rem;flex:1}.nav-links a{position:relative;font-size:.84rem;font-weight:600}.nav-links a.on::after{content:'';position:absolute;left:0;right:0;bottom:-7px;height:2px;background:#000}
.nav-actions{display:flex;gap:.5rem}.nav-actions a{border:1px solid #000;border-radius:8px;padding:.42rem .8rem;font-size:.8rem;font-weight:700}.nav-actions a:hover{background:#000;color:#fff;text-decoration:none}
.page-hero{padding:7.2rem 0 4.8rem;border-bottom:1px solid #000}.kicker{font-family:'JetBrains Mono',ui-monospace,monospace;font-size:.72rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;margin-bottom:1rem}.page-hero h1{max-width:980px;font-size:clamp(2.6rem,6vw,5.2rem);line-height:.98;letter-spacing:-.065em;font-weight:850}.page-hero p{max-width:740px;margin-top:1.45rem;font-size:1.02rem}.hero-actions{display:flex;gap:.65rem;flex-wrap:wrap;margin-top:2rem}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:.65rem 1.15rem;border:1px solid #000;border-radius:9px;font-size:.86rem;font-weight:750}.button.primary{background:#000;color:#fff}.button:hover{text-decoration:none;transform:translateY(-1px)}
main section{padding:5.3rem 0;border-bottom:1px solid #000}.section-head{text-align:center;max-width:820px;margin:0 auto 2.7rem}.section-head .index{font-family:'JetBrains Mono',ui-monospace,monospace;font-size:.7rem;letter-spacing:.11em;text-transform:uppercase;margin-bottom:.6rem}.section-head h2{font-size:clamp(1.9rem,4vw,3rem);line-height:1.06;letter-spacing:-.05em}.section-head p{max-width:720px;margin:.9rem auto 0;font-size:.94rem}
.reading-list{border-top:1px solid #000}.reading-row{display:grid;grid-template-columns:4.5rem minmax(0,1fr);gap:1.2rem;padding:1.45rem 0;border-bottom:1px solid #000}.reading-row .n{font-family:'JetBrains Mono',ui-monospace,monospace;font-size:.72rem;font-weight:650;letter-spacing:.08em}.reading-row h3{font-size:1.04rem;letter-spacing:-.02em;margin-bottom:.3rem}.reading-row p{font-size:.87rem;max-width:950px}
.fig-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.6rem;align-items:start;max-width:1000px;margin-inline:auto}.fig-grid.one{grid-template-columns:1fr;max-width:800px}.figure{display:flex;flex-direction:column}.figure button{display:block;width:100%;border:0;background:#fff;cursor:zoom-in;font:inherit}.figure img{width:100%}.figure figcaption{text-align:center;font-size:.8rem;margin:.8rem auto 0;max-width:760px}.figure figcaption b{font-weight:800}
.topic-grid{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid #000;border-bottom:1px solid #000}.topic{padding:1.4rem 1.8rem 1.5rem 0}.topic:nth-child(even){padding-left:1.8rem;border-left:1px solid #000}.topic:nth-child(n+3){border-top:1px solid #000}.topic h3{font-size:.98rem;letter-spacing:-.015em;margin-bottom:.35rem}.topic p{font-size:.84rem}
.domain-head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;margin-bottom:1.2rem}.domain-head h3{font-size:1.35rem;letter-spacing:-.035em}.domain-head .score{font-family:'JetBrains Mono',ui-monospace,monospace;font-size:.75rem;font-weight:650}
.table-wrap{overflow-x:auto;border-top:1px solid #000;border-bottom:1px solid #000}table{width:100%;border-collapse:collapse;font-size:.84rem}th,td{padding:.72rem .8rem;border-bottom:1px solid #000;text-align:left;white-space:nowrap}th{font-size:.72rem;letter-spacing:.05em;text-transform:uppercase}th:not(:first-child),td:not(:first-child){text-align:center}tbody tr:last-child td{border-bottom:0}.group td{font-weight:800;text-align:left!important}.best{font-weight:850}.method-note{font-size:.78rem;margin-top:1rem}
.next{display:flex;align-items:center;justify-content:space-between;gap:2rem;padding:2rem 0;border-top:1px solid #000}.next h2{font-size:1.35rem;letter-spacing:-.03em}.next p{font-size:.84rem;margin-top:.2rem}
footer{padding:2.6rem 0;text-align:center}footer b{font-size:.95rem}footer .links{display:flex;justify-content:center;gap:1.2rem;flex-wrap:wrap;margin-top:.7rem;font-size:.82rem;font-weight:600}
dialog{width:min(1120px,calc(100% - 2rem));max-height:calc(100% - 2rem);margin:auto;border:0;background:#000;padding:2rem;color:#fff}dialog::backdrop{background:#000}dialog img{max-height:calc(100vh - 7rem);margin:auto;background:#fff}dialog button{position:fixed;top:1.2rem;right:1.5rem;border:0;background:#000;color:#fff;font-size:1.6rem;cursor:pointer}
@media(max-width:820px){.nav-links{display:none}.container{width:min(var(--max),calc(100% - 2rem))}.page-hero{padding:5rem 0 3.7rem}.fig-grid,.topic-grid{grid-template-columns:1fr}.topic,.topic:nth-child(even){padding:1.25rem 0;border-left:0;border-top:1px solid #000}.topic:first-child{border-top:0}.next{align-items:flex-start;flex-direction:column}.nav-actions a:first-child{display:none}}
@media(max-width:520px){.reading-row{grid-template-columns:2.5rem minmax(0,1fr);gap:.7rem}.page-hero h1{font-size:2.55rem}.fig-grid{gap:2.1rem}}