:root { color-scheme: light; --ink:#1c2634; --blue:#2354ac; --muted:#536174; --line:#ccd5e2; --paper:#fff; --field:#f4f7fc; --green:#26715d; font-family:Arial,Helvetica,sans-serif; color:var(--ink); background:var(--paper); }
* { box-sizing:border-box; }
html { scroll-padding-top:24px; }
body { margin:0; font-size:16px; line-height:1.65; }
a { color:var(--blue); text-underline-offset:3px; }
a:hover { text-decoration-thickness:2px; }
a:focus-visible, input:focus-visible { outline:3px solid #b37a05; outline-offset:4px; }
[hidden] { display:none !important; }
.skip-link { position:absolute; top:-100px; left:16px; padding:10px; background:white; z-index:5; }
.skip-link:focus { top:8px; }
.university-header { display:flex; align-items:center; justify-content:space-between; gap:18px; padding:20px max(24px,calc((100vw - 1180px)/2)); border-bottom:1px solid var(--line); }
.university-brand { display:flex; align-items:center; gap:10px; color:var(--ink); font-family:'Varela Round',Arial,sans-serif; font-size:23px; text-decoration:none; font-weight:bold; }
.university-brand span { width:39px; height:39px; display:grid; place-items:center; border-radius:50%; background:var(--blue); color:white; box-shadow:inset 0 -4px 0 #173b7d,0 2px 0 #bfc8d8; }
.university-header nav { display:flex; align-items:center; gap:24px; }
.university-header nav a { padding:8px 0; }
main { max-width:1180px; margin:auto; padding:0 24px; }
.university-intro { display:grid; grid-template-columns:minmax(0,1fr) 320px; gap:45px; align-items:center; padding:56px 0 42px; }
.section-label,.lesson-category { color:var(--green); font-weight:bold; margin:0 0 10px; }
h1,h2,h3 { font-family:'Varela Round',Arial,sans-serif; font-weight:600; line-height:1.2; }
h1 { font-size:clamp(34px,4.5vw,54px); letter-spacing:-1.5px; margin:0 0 22px; }
.intro-copy { font-size:23px; line-height:1.4; max-width:560px; }
.university-intro p:not(.intro-copy):not(.section-label) { color:var(--muted); max-width:65ch; font-size:14px; }
.button-diagram { margin:0; }
.button-diagram svg { display:block; width:100%; height:auto; }
.button-diagram figcaption { font-size:12px; line-height:1.4; text-align:center; color:var(--muted); }
.university-workbook { display:grid; grid-template-columns:260px minmax(0,1fr); gap:56px; align-items:start; border-top:3px solid var(--blue); }
.lesson-index { position:sticky; top:20px; padding:24px 18px; background:var(--field); border-radius:0 0 18px 18px; }
.lesson-index h2 { font-size:20px; margin:0 0 20px; }
.lesson-index label { display:block; font-size:13px; margin-bottom:6px; }
.lesson-index input { width:100%; min-height:44px; padding:9px; border:1px solid #71819a; border-radius:6px; font:inherit; font-size:14px; }
#lesson-count { font-size:13px; color:var(--muted); margin:10px 0; }
.lesson-index nav { display:grid; gap:1px; }
.lesson-index nav a { display:block; padding:9px 0; line-height:1.4; font-size:14px; }
.source-jump { display:block; padding-top:20px; margin-top:12px; border-top:1px solid var(--line); font-weight:bold; font-size:14px; }
.review-date { font-size:12px; color:var(--muted); line-height:1.5; }
.lessons article { padding:36px 0; border-bottom:1px solid var(--line); scroll-margin-top:20px; }
.lessons article h2 { font-size:28px; margin:0 0 20px; }
.lessons p,.lessons li,.lessons dd { max-width:72ch; }
.lessons li { margin:10px 0; padding-left:4px; }
.lessons ol,.lessons ul { padding-left:22px; }
.lessons dl { display:grid; grid-template-columns:100px minmax(0,1fr); gap:14px 16px; padding:20px; background:var(--field); border-left:4px solid var(--blue); }
.lessons dt { font-weight:bold; }
.lessons dd { margin:0; }
.lesson-category { font-size:13px; }
.lesson-source { font-size:14px; color:var(--muted); }
.silhouette-download-groups { display:grid; gap:20px; margin:16px 0 4px; }
.silhouette-download-groups h3 { margin:0 0 8px; font-size:17px; }
.silhouette-download-list { display:grid; grid-template-columns:repeat(auto-fit,minmax(146px,1fr)); gap:8px; padding:0; margin:0; list-style:none; }
.silhouette-download-list li { margin:0; padding:0; }
.silhouette-download-list a { display:grid; align-content:center; min-height:44px; padding:6px 10px; border:1px solid var(--line); border-radius:8px; background:var(--field); color:var(--blue); font-size:14px; font-weight:bold; line-height:1.2; text-decoration:none; }
.silhouette-download-list a:hover { border-color:var(--blue); background:#e8edf7; }
.silhouette-download-list small { margin-top:2px; color:var(--muted); font-size:11px; font-weight:normal; }
.table-scroll { overflow-x:auto; }
table { border-collapse:collapse; width:100%; font-size:15px; }
caption { text-align:left; font-size:13px; color:var(--muted); margin-bottom:8px; }
th,td { text-align:left; padding:12px; border-bottom:1px solid var(--line); }
thead { background:var(--field); }
#no-lessons { padding:35px 0; }
.source-library { padding:46px 0; }
.source-library h2 { font-size:30px; }
.source-library>p { max-width:78ch; }
.source-columns { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:36px; }
.source-columns h3 { font-size:20px; }
.source-columns ul { padding-left:19px; }
.source-columns li { font-size:14px; margin-bottom:16px; }
.source-note { color:var(--muted); font-size:13px; border-top:1px solid var(--line); padding-top:20px; }
footer { background:var(--field); padding:24px; display:flex; justify-content:center; gap:25px; flex-wrap:wrap; align-items:center; font-size:14px; }
footer p { margin:0; }
@media (max-width:850px) { .university-intro { grid-template-columns:minmax(0,1fr) 220px; gap:15px; } .university-workbook { grid-template-columns:220px minmax(0,1fr); gap:28px; } .source-columns { gap:20px; } .lessons dl { grid-template-columns:1fr; gap:6px; } .lessons dd { margin-bottom:10px; } }
@media (max-width:650px) { .university-header { padding:15px 18px; flex-wrap:wrap; } .university-header nav { gap:20px; font-size:14px; } main { padding:0 18px; } .university-intro { grid-template-columns:1fr; padding:32px 0; } .intro-copy { font-size:20px; } .button-diagram { max-width:240px; margin:auto; } .university-workbook { display:block; } .lesson-index { position:static; padding:20px; } .lesson-index nav { grid-template-columns:1fr 1fr; gap:4px 16px; } .source-columns { grid-template-columns:1fr; gap:0; } .lessons article h2 { font-size:25px; } h1 { letter-spacing:-.7px; } }
@media (pointer:coarse) { a { min-height:44px; } .lesson-index nav a { padding:12px 0; } }
@media print { .university-header,.lesson-index,footer,.skip-link { display:none; } .university-workbook { display:block; } .university-intro { grid-template-columns:1fr 200px; padding:0; } .lessons article[hidden] { display:block !important; } .lessons article { break-inside:avoid; } body { font-size:11pt; } main { max-width:none; } a { color:inherit; } }