:root{--bg:#F4F6FB;--ink:#0E1A3A;--blue:#2F5BFF;--asi:#C2338A;--mute:#5A6584;--grey:#A3ABC0;--line:#D8DDEA;--panel:#FFFFFF;--night:#0E1A3A;--nightink:#E8ECF8;
--display:"Unbounded",Verdana,sans-serif;--sans:"Figtree",system-ui,sans-serif}
@media (prefers-color-scheme:dark){:root{--bg:#0B1430;--ink:#E8ECF8;--blue:#7C98FF;--asi:#F06BB4;--mute:#A0AAC6;--grey:#5C6688;--line:#24305A;--panel:#111C40;--night:#07102A}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:1.0625rem/1.65 var(--sans)}
a{color:var(--blue);text-underline-offset:3px}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px}
.wrap{max-width:70rem;margin:0 auto;padding:0 1.5rem}
header.site{background:var(--night);color:var(--nightink)}
header.site .wrap{display:flex;flex-wrap:wrap;gap:.75rem 2rem;align-items:center;justify-content:space-between;padding-top:1.1rem;padding-bottom:1.1rem}
.brand{font:700 1rem var(--display);color:#fff;text-decoration:none;letter-spacing:-.01em}
.brand span{color:#8FA6FF}
nav a{font:600 .98rem var(--sans);color:#B8C2E0;text-decoration:none;margin-left:1.4rem}
nav a:first-child{margin-left:0}
nav a:hover,nav a[aria-current]{color:#fff}
h1,h2{font-family:var(--display);letter-spacing:-.03em;line-height:1.1;font-weight:700}
h1{font-size:clamp(1.9rem,4.6vw,3.3rem);margin:0 0 .8rem;max-width:22ch}
h2{font-size:clamp(1.3rem,2.6vw,1.75rem);margin:3.5rem 0 .6rem}
h3{font:700 1.15rem/1.3 var(--sans);margin:2rem 0 .4rem}
.lede{font-size:1.15rem;color:var(--mute);max-width:42rem;margin:0}
/* hero band */
.band{background:var(--night);color:var(--nightink);padding:2.5rem 0 3rem}
.band .lede{color:#B8C2E0}
.band h1{color:#fff}
/* timeline chart */
.chart{margin-top:2rem;overflow-x:auto}
.chart svg{display:block;width:100%;min-width:720px;height:auto}
.chart text{font-family:var(--sans)}
.key{display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;margin-top:1rem;font-size:.92rem;color:#B8C2E0}
.key span::before{content:"";display:inline-block;width:22px;height:6px;border-radius:3px;margin-right:.45rem;vertical-align:middle;background:var(--c)}
.detail{margin-top:1rem;min-height:3.4em;font-size:.98rem;color:#DCE3F7;max-width:48rem}
/* filters + table */
.filters{display:flex;flex-wrap:wrap;gap:.4rem 1.5rem;margin:1.25rem 0 .75rem}
.filters fieldset{border:0;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:.4rem;align-items:center}
.filters legend{float:left;font:600 .88rem var(--sans);color:var(--mute);margin-right:.4rem}
.filters button{font:600 .9rem var(--sans);padding:.35rem .85rem;border:1.5px solid var(--line);background:var(--panel);color:var(--ink);border-radius:99px;cursor:pointer}
.filters button[aria-pressed="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.tablewrap{overflow-x:auto;background:var(--panel);border:1px solid var(--line);border-radius:10px}
table{border-collapse:collapse;width:100%;min-width:720px;font-size:.96rem}
th{font:700 .85rem var(--sans);color:var(--mute);text-align:left;padding:.8rem 1rem;border-bottom:1px solid var(--line)}
td{padding:.85rem 1rem;border-top:1px solid var(--line);vertical-align:top}
tbody tr:first-child td{border-top:0}
td.who strong{display:block}
td.who small{color:var(--mute)}
.when{font:700 1rem var(--display);white-space:nowrap}
.tag{display:inline-block;font:700 .78rem var(--sans);padding:.12rem .55rem;border-radius:99px;white-space:nowrap}
.t-agi{background:color-mix(in srgb,var(--blue) 14%,transparent);color:var(--blue)}
.t-asi{background:color-mix(in srgb,var(--asi) 14%,transparent);color:var(--asi)}
.t-exp{background:color-mix(in srgb,var(--grey) 25%,transparent);color:var(--mute)}
.note{font-size:.9rem;color:var(--mute);max-width:48rem}
/* scoreboard */
.tally{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin:2rem 0 0;border:1px solid rgba(255,255,255,.18);border-radius:12px;overflow:hidden}
.tally div{padding:1.1rem 1.25rem;border-left:1px solid rgba(255,255,255,.18)}
.tally div:first-child{border-left:0}
.tally b{display:block;font:700 2.2rem/1 var(--display);color:#fff}
.tally span{color:#B8C2E0;font-size:.95rem}
.board h2{display:flex;align-items:center;gap:.6rem}
.board h2 i{width:14px;height:14px;border-radius:50%;background:var(--c);flex:none}
.rows{border-top:2px solid var(--ink)}
.row{display:grid;grid-template-columns:5rem 1fr;gap:1rem;padding:1rem 0;border-bottom:1px solid var(--line)}
.row .yr{font:700 1rem var(--display);color:var(--mute);padding-top:.1rem}
.row strong{display:block;font-size:1.08rem}
.row p{margin:.2rem 0 0;color:var(--mute);max-width:46rem}
/* learn */
.scale{position:relative;margin:2.5rem 0 .5rem;height:120px;min-width:640px}
.scalewrap{overflow-x:auto}
.scale::before{content:"";position:absolute;left:0;right:0;top:40px;height:2px;background:linear-gradient(90deg,#fff 0 var(--h,34%),rgba(255,255,255,.25) var(--h,34%))}
.scale button{position:absolute;top:28px;transform:translateX(-50%);background:none;border:0;color:#DCE3F7;font:600 .9rem var(--sans);cursor:pointer;padding:0;text-align:center}
.scale button i{display:block;width:14px;height:14px;margin:5px auto 10px;border-radius:50%;background:#fff}
.scale button.far i{width:26px;height:26px;margin-top:-1px;background:var(--asi);box-shadow:0 0 0 8px color-mix(in srgb,var(--asi) 25%,transparent)}
.scale button[aria-pressed="true"]{color:#fff;text-decoration:underline;text-underline-offset:4px}
.guides{display:grid;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));gap:1rem;margin:1.5rem 0}
.guides a{display:block;padding:1.4rem;background:var(--panel);border:1px solid var(--line);border-radius:10px;color:var(--ink);text-decoration:none}
.guides a:hover{border-color:var(--blue)}
.guides h3{margin:0 0 .35rem}
.guides p{margin:0;color:var(--mute);font-size:.97rem}
.prose{max-width:42rem}
.prose p,.prose li{margin:0 0 1.1rem}
.article{padding-top:2.5rem}
dl.gloss dt{font:700 1.05rem var(--sans);margin-top:1.75rem}
dl.gloss dd{margin:.25rem 0 0}
.updated{font-size:.88rem;color:var(--mute)}
footer{margin-top:5rem;padding:2rem 0 3rem;border-top:1px solid var(--line);font-size:.92rem;color:var(--mute)}
@media (max-width:560px){.tally b{font-size:1.6rem}.row{grid-template-columns:3.6rem 1fr}}
@media (prefers-reduced-motion:no-preference){.scale button.far i{animation:p 3s ease-in-out infinite}@keyframes p{50%{box-shadow:0 0 0 15px color-mix(in srgb,var(--asi) 8%,transparent)}}}
.chart .bar{outline:none}
.chart .bar:focus-visible rect:first-child,.chart .bar:hover rect:first-child{fill:rgba(255,255,255,.07)}
td:nth-child(4){white-space:nowrap}
.board .lede{margin-bottom:1.25rem}