@font-face{font-family:Inter;src:url('/assets/fonts/InterVariable.woff2') format('woff2');font-style:normal;font-weight:100 900;font-display:swap}
:root{color-scheme:light;--ink:#191919;--muted:#626262;--line:#dedede;--soft:#f6f6f5}
*{box-sizing:border-box}
html{background:#fff;color:var(--ink);scroll-behavior:smooth}
body{margin:0;font-family:Inter,Arial,Helvetica,sans-serif;font-weight:400;font-optical-sizing:auto;font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;min-height:100svh;display:flex;flex-direction:column}
a{color:inherit;text-underline-offset:.23em;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
button,input{font:inherit;color:inherit}
button,a,input{touch-action:manipulation}
:focus-visible{outline:2px solid var(--ink);outline-offset:5px}
.skip{position:absolute;left:20px;top:-80px;background:#fff;padding:12px;z-index:10}
.skip:focus{top:10px}
.site-header{display:flex;align-items:center;gap:32px;padding:26px 40px;min-height:84px}
.site-name{font-size:25px;font-weight:700;letter-spacing:-1px;line-height:1.2;text-decoration:none;white-space:nowrap}
.menu{display:flex;gap:32px;align-items:center;margin:0;padding:0;list-style:none;font-size:15px;line-height:1.5}
.menu a{text-decoration:none;padding:8px 0}
.menu a:hover{text-decoration:underline}
.menu [aria-disabled]{color:#767676;cursor:default}
main{width:min(1040px,100%);margin:0 auto;padding:64px 40px 100px;flex:1}
.home{padding-top:84px}
.eyebrow{font-size:12px;letter-spacing:.075em;text-transform:uppercase;color:var(--muted);margin:0 0 14px}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(34px,5vw,56px);font-weight:400;line-height:1.12;letter-spacing:-.055em;margin-bottom:24px;text-wrap:balance}
h2{font-size:clamp(23px,3vw,30px);font-weight:400;line-height:1.25;letter-spacing:-.035em;margin-bottom:16px}
h3{font-size:21px;font-weight:500;line-height:1.3;letter-spacing:-.025em;margin-bottom:8px}
.lede{font-size:clamp(17px,2vw,20px);color:var(--muted);line-height:1.6;max-width:640px;margin-bottom:32px}
.intro{max-width:770px;margin-bottom:56px}
.section{margin-top:52px}
.section-head{display:flex;gap:16px;align-items:baseline;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:16px;margin-bottom:0}
.section-head h2{margin:0}
.term{font-size:14px;color:var(--muted)}
.course-entry{padding:30px 0 34px;border-bottom:1px solid var(--line)}
.course-entry h2{font-size:34px;margin-bottom:9px}
.course-entry p{color:var(--muted);margin-bottom:22px}
.actions{display:flex;gap:12px 24px;align-items:center;flex-wrap:wrap}
.button{display:inline-flex;align-items:center;justify-content:center;gap:20px;min-height:46px;padding:11px 19px;background:var(--ink);color:#fff;text-decoration:none;border:1px solid var(--ink);border-radius:4px;font-size:15px;font-weight:400;line-height:1.45;cursor:pointer}
.button:hover{background:#353535;text-decoration:none}
.button.secondary{background:#fff;color:var(--ink);border-color:#bcbcbc}
.button.secondary:hover{background:var(--soft)}
.text-link{display:inline-block;padding:9px 0;font-size:15px}
.site-note{margin-top:32px;color:var(--muted);font-size:14px}
.breadcrumbs{font-size:13px;color:var(--muted);display:flex;gap:8px;flex-wrap:wrap;margin-bottom:34px;line-height:1.8}
.breadcrumbs a{text-decoration:none}
.breadcrumbs a:hover{text-decoration:underline}
.course-tabs{display:flex;gap:28px;border-bottom:1px solid var(--line);margin:0 0 38px;padding:0;list-style:none;font-size:15px}
.course-tabs a{display:block;padding:0 0 15px;text-decoration:none}
.course-tabs a[aria-current=page]{border-bottom:2px solid var(--ink);margin-bottom:-1px}
.course-tabs a:hover{text-decoration:underline}
.resource{display:grid;grid-template-columns:1fr auto;gap:20px;padding:25px 0;border-bottom:1px solid var(--line)}
.resource p{margin:0;color:var(--muted);max-width:570px;font-size:15px}
.resource .actions{justify-content:flex-end;align-content:center}
.resource h3 a{text-decoration:none}
.resource h3 a:hover{text-decoration:underline}
.date-controls{display:flex;align-items:end;gap:12px;flex-wrap:wrap;margin-bottom:24px}
.date-field{display:flex;flex-direction:column;gap:8px;min-width:210px}
.date-field label{font-size:14px}
input[type=date]{border:1px solid #999;border-radius:4px;background:#fff;min-height:46px;padding:8px 12px;min-width:210px;max-width:100%}
.lesson-result{background:var(--soft);border-radius:5px;padding:28px;min-height:180px}
.lesson-result h2{font-size:27px}
.lesson-result p:last-child{margin-bottom:0}
.lesson-result .eyebrow{margin-bottom:11px}
.lesson-result .actions{margin-top:20px}
.lesson-list{list-style:none;margin:0;padding:0}
.lesson-list li{border-bottom:1px solid var(--line);padding:18px 0}
.lesson-list a{display:flex;justify-content:space-between;gap:20px;text-decoration:none;align-items:baseline}
.lesson-list a:hover .lesson-title{text-decoration:underline}
.lesson-date{font-size:14px;color:var(--muted);white-space:nowrap}
.reading{max-width:740px}
.reading p{margin-bottom:20px}
.reading ul{padding-left:22px}
.reading li{padding-left:4px;margin:10px 0}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:30px;margin-top:30px}
.fact{border-top:1px solid var(--line);padding-top:20px}
.fact h3{font-size:17px;font-weight:500}
.fact p{font-size:15px;color:var(--muted);margin-bottom:0}
.table-wrap{overflow-x:auto;margin-top:25px}
table{border-collapse:collapse;width:100%;text-align:left;font-size:15px}
th{font-size:13px;font-weight:500;color:var(--muted)}
th,td{padding:15px 14px 15px 0;border-bottom:1px solid var(--line);vertical-align:top}
th:last-child,td:last-child{padding-right:0}
td:nth-child(n+2){white-space:nowrap}
.elo-code{font-size:12px;color:var(--muted);display:block;margin-bottom:3px}
.notice{font-size:14px;color:var(--muted);margin:16px 0 0}
.back{display:inline-block;margin-bottom:26px;font-size:14px}
footer{border-top:1px solid var(--line);padding:24px 40px;display:flex;justify-content:space-between;gap:16px;color:var(--muted);font-size:12px;flex-wrap:wrap}
footer p{margin:0}
footer a{text-decoration:none}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:640px){.site-header{padding:24px 20px;gap:22px}.site-name{font-size:23px}.menu{gap:20px;font-size:14px}main{padding:40px 22px 70px}.home{padding-top:48px}.intro{margin-bottom:40px}.section-head{align-items:flex-start;flex-direction:column;gap:5px}.course-entry h2{font-size:29px}.resource{grid-template-columns:1fr;gap:16px}.resource .actions{justify-content:flex-start}.lesson-result{padding:23px}.lesson-list a{align-items:flex-start;flex-direction:column;gap:5px}.facts{grid-template-columns:1fr;gap:23px}footer{padding:24px 22px}.table-wrap th,.table-wrap td{font-size:13px}.table-wrap td:first-child{min-width:130px}.course-tabs{gap:24px}}
@media(max-width:350px){.site-header{gap:18px;padding-inline:16px}.site-name{font-size:21px}.menu{gap:14px;font-size:13px}main{padding-inline:18px}.button{padding-inline:15px}.table-wrap{margin-right:-6px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}