:root{--bg:#F2F3F6;--ink:#1B1F2A;--accent:#5B3FD9;--asi:#C2338A;--steel:#5D6577;--rule:#D3D7E0;--panel:#FFFFFF;--passed:#A9B0BC;
--sans:"IBM Plex Sans",system-ui,sans-serif}
@media (prefers-color-scheme:dark){:root{--bg:#181A21;--ink:#E7E9EF;--accent:#9C88FF;--asi:#F06BB4;--steel:#9AA1B2;--rule:#2F3340;--panel:#20232C;--passed:#5B6273}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:1rem/1.6 var(--sans)}
a{color:inherit;text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:3px}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.wrap{max-width:72rem;margin:0 auto;padding:0 1.25rem}
header.site{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.5rem 1rem;padding:1.1rem 0;border-bottom:3px solid var(--ink)}
.brand{font:700 1.3rem var(--sans);text-decoration:none;letter-spacing:-.01em}
.brand b{background:var(--accent);color:#fff;padding:0 .3rem;margin-left:.1rem}
nav{display:flex;gap:1.2rem}
nav a{font:500 .98rem var(--sans);text-decoration:none;color:var(--steel)}
nav a:hover,nav a[aria-current]{color:var(--ink)}
h1{font:700 clamp(1.9rem,4.5vw,2.8rem)/1.12 var(--sans);margin:2.25rem 0 .5rem;letter-spacing:-.01em}
h2{font:700 1.45rem/1.25 var(--sans);margin:2.75rem 0 .6rem}
h3{font:700 1.1rem var(--sans);margin:1.75rem 0 .4rem}
.intro,.lede{color:var(--steel);max-width:44rem;margin:0 0 1rem;font-size:1.05rem}
.updated{font-size:.9rem;color:var(--steel);margin:0 0 1.5rem}
.updated::before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background:#2F9E5B;margin-right:.45rem;vertical-align:1px}
.crumb{margin:2rem 0 0;font-size:.95rem}
.panel{background:var(--panel);border:1px solid var(--rule);border-top:4px solid var(--accent);padding:1.25rem 1.25rem 1rem}
/* key */
.key{display:flex;flex-wrap:wrap;gap:.4rem 1.25rem;font-size:.88rem;color:var(--steel);margin-bottom:1rem}
.key span::before{content:"";display:inline-block;width:18px;height:8px;border-radius:4px;margin-right:.4rem;vertical-align:1px;background:var(--c)}
.k-agi{--c:var(--accent)}.k-asi{--c:var(--asi)}.k-exp{--c:var(--passed)}
.k-now::before{width:2px!important;height:14px!important;border-radius:0!important;background:var(--ink)!important;vertical-align:-2px!important}
/* timeline */
.tl{display:grid}
.tl-axis,.tl-row{display:grid;grid-template-columns:13rem 1fr;align-items:center;gap:1rem}
.tl-axis .tl-track{position:relative;height:1.4rem;font-size:.8rem;color:var(--steel)}
.tl-axis .tl-track span{position:absolute;transform:translateX(-50%);top:0}
.tl-row{width:100%;background:none;border:0;border-top:1px solid var(--rule);padding:.45rem 0;color:var(--ink);font:inherit;text-align:left;cursor:pointer}
.tl-row:hover,.tl-row[aria-pressed]{background:color-mix(in srgb,var(--accent) 7%,transparent)}
.tl-name{font-weight:600;font-size:.95rem;line-height:1.25}
.tl-name small{display:block;font-weight:400;color:var(--steel);font-size:.82rem}
.tl-row .tl-track{position:relative;height:1.4rem;display:block}
.tl-row .tl-track::after{content:"";position:absolute;left:var(--now);top:-.5rem;bottom:-.5rem;width:2px;background:var(--ink)}
.tl-track i{position:absolute;top:50%;height:10px;margin-top:-5px;border-radius:5px;min-width:10px}
.tl-track i.dot{width:12px;height:12px;margin:-6px 0 0 -6px;border-radius:50%}
.tl-track i.agi{background:var(--accent)}.tl-track i.asi{background:var(--asi)}.tl-track i.exp{background:var(--passed)}
.detail{margin:1rem 0 0;min-height:3em;font-size:.95rem;color:var(--steel);max-width:48rem}
.detail strong{color:var(--ink)}
@media (max-width:640px){
.tl-axis,.tl-row{grid-template-columns:1fr;gap:.25rem}
.tl-axis .tl-name{display:none}
.tl-name{display:flex;justify-content:space-between;gap:.5rem}
.tl-name small{display:inline}
.tl-axis .tl-track span:nth-child(even){display:none}}
/* filters + tables (as on sirobot.us) */
.filters{display:flex;flex-wrap:wrap;gap:.5rem;margin:1rem 0 .5rem}
.filters fieldset{border:0;padding:0;margin:0 1.5rem .5rem 0;display:flex;flex-wrap:wrap;gap:.4rem;align-items:center}
.filters legend{font:600 .88rem var(--sans);color:var(--steel);float:left;margin-right:.5rem}
.filters button{font:500 .92rem var(--sans);padding:.35rem .8rem;border:1.5px solid var(--rule);background:var(--panel);color:var(--ink);cursor:pointer;border-radius:3px}
.filters button[aria-pressed="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.count{font-size:.9rem;color:var(--steel);margin:.25rem 0 1rem}
.tablewrap{background:var(--panel);border:1px solid var(--rule)}
table{border-collapse:collapse;width:100%;font-size:.95rem}
th{font:600 .85rem var(--sans);color:var(--steel);text-align:left;padding:.75rem 1rem;border-bottom:2px solid var(--ink);white-space:nowrap}
td{padding:.85rem 1rem;border-bottom:1px solid var(--rule);vertical-align:top}
tr:last-child td{border-bottom:0}
td.who strong{display:block;font-weight:700}
td.who small{color:var(--steel)}
.when{font-weight:700;white-space:nowrap}
.tag{display:inline-block;font:600 .8rem var(--sans);padding:.12rem .5rem;border-radius:2px;white-space:nowrap;border-left:4px solid}
.t-agi{border-color:var(--accent)}.t-asi{border-color:var(--asi)}.t-exp{border-color:var(--passed);color:var(--steel)}
.ms td.yr{font-weight:700;color:var(--steel);width:5rem}
.ms td.ms-name{font-weight:700;width:16rem}
.links td:first-child{font-weight:700;width:16rem}
@media (max-width:640px){
table.cards thead{display:none}
table.cards,table.cards tbody,table.cards tr,table.cards td{display:block;width:auto!important}
table.cards tr{padding:.9rem 1rem;border-bottom:1px solid var(--rule)}
table.cards tr:last-child{border-bottom:0}
table.cards td{padding:.15rem 0;border:0}
table.cards td[data-l="Said"]::before{content:"Said ";color:var(--steel)}
.ms td.yr{font-size:.85rem}}
/* status chips + tally */
.status{display:inline-block;font:600 .95rem var(--sans);padding:.1rem .55rem;border-left:5px solid}
h2 .status{font-size:1.3rem;font-weight:700;padding:.05rem .6rem}
.s-ahead{border-color:var(--accent)}.s-level{border-color:#3A7BD5}.s-behind{border-color:var(--asi)}
.tally{display:grid;grid-template-columns:repeat(3,1fr);background:var(--panel);border:1px solid var(--rule);border-top:4px solid var(--accent)}
.tally div{padding:1rem 1.25rem;border-left:1px solid var(--rule)}
.tally div:first-child{border-left:0}
.tally b{display:block;font:700 2rem/1.2 var(--sans);margin-top:.35rem}
@media (max-width:560px){.tally{grid-template-columns:1fr}.tally div{border-left:0;border-top:1px solid var(--rule);display:flex;justify-content:space-between;align-items:center}.tally div:first-child{border-top:0}.tally b{margin:0;font-size:1.5rem}}
/* learn scale */
.scalewrap{overflow-x:auto}
.scale{position:relative;height:96px;min-width:560px}
.scale::before{content:"";position:absolute;left:0;right:0;top:30px;height:3px;background:linear-gradient(90deg,var(--ink) 0 var(--h,31%),var(--rule) var(--h,31%))}
.scale button{position:absolute;top:19px;transform:translateX(-50%);background:none;border:0;color:var(--steel);font:600 .88rem var(--sans);cursor:pointer;padding:0;text-align:center;white-space:nowrap}
.scale button i{display:block;width:14px;height:14px;margin:4px auto 10px;border-radius:50%;background:var(--ink)}
.scale button.far i{width:24px;height:24px;margin-top:-1px;background:var(--asi)}
.scale button.far{color:var(--asi)}
.scale button[aria-pressed="true"] span{color:var(--ink);text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:4px}
/* articles */
.article .prose,.article{max-width:none}
.prose{max-width:42rem}
.prose p,.prose li{margin:0 0 1.1rem;font-size:1.04rem;line-height:1.7}
.article .tablewrap{overflow-x:auto}
.article table{min-width:560px}
dl.gloss dt{font-weight:700;font-size:1.05rem;margin-top:1.6rem}
dl.gloss dd{margin:.25rem 0 0}
.note{font-size:.9rem;color:var(--steel);max-width:48rem;margin-top:1rem}
footer{margin-top:4rem;padding:1.5rem 0 3rem;border-top:1px solid var(--rule);font-size:.9rem;color:var(--steel)}