@font-face{font-family:Inter;src:url('assets/inter-400.ttf') format('truetype');font-weight:400;font-display:swap}
@font-face{font-family:Inter;src:url('assets/inter-500.ttf') format('truetype');font-weight:500;font-display:swap}
@font-face{font-family:Inter;src:url('assets/inter-600.ttf') format('truetype');font-weight:600;font-display:swap}
@font-face{font-family:Inter;src:url('assets/inter-900.ttf') format('truetype');font-weight:900;font-display:swap}
*{box-sizing:border-box}
[hidden]{display:none!important}
body{margin:0;min-height:100svh;background:var(--page);color:var(--ink);display:flex;flex-direction:column;line-height:var(--reading-leading);letter-spacing:var(--reading-tracking)}
a{color:var(--ink);text-decoration-thickness:1px;text-underline-offset:4px}
button,select{font:inherit;letter-spacing:inherit;min-height:44px;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:8px 12px}
button{cursor:pointer}button:disabled{opacity:.5;cursor:default}
:focus-visible{outline:3px solid var(--focus);outline-offset:4px}
.skip-link{position:absolute;top:8px;left:12px;z-index:20;transform:translateY(-160%);padding:10px 16px;background:var(--surface);border:1px solid var(--focus);border-radius:8px}
.skip-link:focus{transform:none}
.site-header{display:flex;flex-wrap:wrap;align-items:center;gap:30px;min-height:82px;padding:12px clamp(16px,4vw,64px);border-bottom:var(--divider-width) solid var(--divider-color)}
.brand{font-size:calc(30px + var(--text-size-offset));font-weight:900;line-height:1.2;text-decoration:none;white-space:nowrap;color:var(--ink)}
.desktop-nav{display:flex;align-items:center;gap:24px;margin:auto;font-size:var(--type-menu);font-weight:500}
.desktop-nav a{text-decoration:none;color:var(--secondary);padding-block:10px}
.desktop-nav a:hover,.desktop-nav a[aria-current]{color:var(--ink);text-decoration:underline}
.header-actions{display:flex;align-items:center;gap:8px;margin-left:auto}
#menu-toggle{display:none;align-items:center;justify-content:center;width:44px;padding:8px;flex-shrink:0;background:transparent}
#menu-toggle svg{fill:none;stroke:currentColor;stroke-width:1.8}
main{width:min(100%,1040px);margin:0 auto;padding:clamp(32px,6vw,72px) 24px;flex:1;font-size:var(--reading-size);overflow-wrap:anywhere}
.back-link{display:inline-block;font-size:var(--type-ui);margin-bottom:24px;min-height:44px;padding-block:10px}
h1{font-size:var(--type-title);line-height:1.2;letter-spacing:calc(-.035em + var(--reading-tracking));margin:0 0 18px;font-weight:600}
p{margin:0;color:var(--ink)}
/* Shared solid titles follow the learner's accent; gradients remain on the brand and primary actions. */
.page-title,.learning-heading h1{color:var(--accent);padding-right:4px}
#page-content{padding:0;border:0;background:none}
.course-landing #page-content h1{margin-bottom:0}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.course-list{margin-top:16px}
.course-list h2{font-size:var(--type-teaching-heading);font-weight:600;margin:0 0 10px}
.course-list ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.course-card{display:grid;grid-template-columns:1fr auto;align-items:center;gap:2px 16px;padding:14px 18px;border:1px solid var(--line);border-radius:14px;background:var(--surface-soft);color:var(--secondary);text-decoration:none}
.course-card:hover{background:var(--accent-soft)}
.course-card .course-name{color:var(--ink);font-weight:600}
.course-card>[aria-hidden]{grid-row:1/3;grid-column:2;color:var(--accent);font-size:calc(22px + var(--text-size-offset))}
#site-menu{background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:18px;width:min(260px,calc(100% - 24px));position:fixed;inset:12px 12px auto auto;margin:0;max-height:calc(100svh - 24px);padding:16px;font:inherit;font-size:var(--type-menu);overflow:auto}
#site-menu::backdrop{background:#030107b8}
.menu-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:12px}
.menu-heading h2{margin:0;font-size:calc(22px + var(--text-size-offset))}
.menu-heading button{font-size:calc(24px + var(--text-size-offset));min-width:44px;background:transparent}
#site-menu nav{display:flex;flex-direction:column}#site-menu a{padding:12px;min-height:44px;border-radius:8px;text-decoration:none;color:var(--ink)}
#site-menu a:hover{background:var(--accent-soft)}
.no-script{padding:16px 24px}
@media(max-width:1100px){.desktop-nav{display:none}#menu-toggle{display:flex}}
@media(max-width:600px){.site-header{gap:8px;padding:8px 12px;min-height:64px}.brand{font-size:calc(26px + var(--text-size-offset))}.header-actions{gap:6px}main{padding:28px 16px}.back-link{margin-bottom:16px}body.shell-page{--type-title:calc(26px + var(--text-size-offset))}}
@media(forced-colors:active){.page-title,.learning-heading h1{background:none;color:CanvasText;-webkit-text-fill-color:CanvasText}button,select,#page-content{border-color:CanvasText}button:disabled{color:GrayText;opacity:1}}