:root {
  color-scheme: light;
  --bg: #fffaf6;
  --surface: #ffffff;
  --ink: #1d1b2c;
  --muted: #625f75;
  --line: #ece6f2;
  --accent: #e8622c;
  --accent-2: #7b5cfa;
  --accent-soft: #ffeee4;
  --violet-soft: #f1ecff;
  --good: #16a364;
  --bad: #e0453a;
  --d1: #7b5cfa; --d2: #0aa5c2; --d3: #e8622c; --d4: #e0398f; --d5: #5ea81c;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(60,40,120,.06), 0 10px 30px rgba(90,60,160,.08);
  --shadow-lift: 0 2px 4px rgba(60,40,120,.08), 0 18px 40px rgba(90,60,160,.14);
  --grad: linear-gradient(120deg, #ff7a3d 0%, #f0457a 50%, #7b5cfa 100%);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background:
    radial-gradient(1100px 520px at 0% -10%, #ffe3d3 0%, rgba(255,227,211,0) 60%),
    radial-gradient(900px 500px at 100% 0%, #e8e0ff 0%, rgba(232,224,255,0) 60%),
    var(--bg);
  background-attachment: fixed;
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
.wrap { max-width: 800px; margin: 0 auto; padding: 2.5rem 1.25rem 5rem; }
header.course { border-bottom: 2px solid var(--line); padding-bottom: 1.25rem; margin-bottom: 2rem; }
.kicker { font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); font-weight: 700; }
h1 { font-size: 1.9rem; line-height: 1.2; margin: .3rem 0 .4rem; }
h2 { font-size: 1.3rem; margin: 2.2rem 0 .6rem; }
h3 { font-size: 1.05rem; margin: 1.5rem 0 .4rem; }
.sub { color: var(--muted); margin: 0; }
a { color: var(--accent); }
code { background: var(--accent-soft); padding: .1em .35em; border-radius: 4px; font-size: .88em; }
pre { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem; overflow-x: auto; }
pre code { background: none; padding: 0; }
table { border-collapse: collapse; width: 100%; margin: 1rem 0; font-size: .92rem; }
th, td { text-align: left; padding: .5rem .7rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.table-scroll { overflow-x: auto; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: .9rem; margin: 1.2rem 0; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1rem 1.1rem; display: flex; flex-direction: column; gap: .3rem;
  text-decoration: none; color: inherit; transition: border-color .15s;
}
a.card:hover { border-color: var(--accent); }
.card.soon { opacity: .62; }
.card .mod { font-size: .74rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.card h3 { margin: 0; font-size: 1rem; }
.card p { margin: 0; font-size: .84rem; color: var(--muted); }
.card .status { font-size: .78rem; font-weight: 600; margin-top: .35rem; }
.status.live { color: var(--good); }
.status.pending { color: var(--muted); }

.pillrow { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1rem 0; }
.pill {
  display: inline-block; padding: .35rem .8rem; border-radius: 999px;
  border: 1px solid var(--line); background: var(--surface);
  font-size: .84rem; text-decoration: none; color: var(--ink); font-weight: 600;
}
.pill:hover { border-color: var(--accent); }
.domain-tag { display: inline-block; font-size: .72rem; font-weight: 700; padding: .12rem .5rem; border-radius: 999px; color: #fff; }
.dt1 { background: var(--d1);} .dt2 { background: var(--d2);} .dt3 { background: var(--d3);} .dt4 { background: var(--d4);} .dt5 { background: var(--d5);}

.callout { background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: 0 var(--radius) var(--radius) 0; padding: .8rem 1rem; margin: 1.2rem 0; font-size: .94rem; }
.callout.flag { border-left-color: var(--bad); }
.checklist { list-style: none; padding-left: 0; }
.checklist li { padding-left: 1.7rem; position: relative; margin: .35rem 0; }
.checklist li::before { content: "☐"; position: absolute; left: .2rem; color: var(--accent); }

.layers { display: flex; flex-direction: column; gap: .45rem; margin: 1.2rem 0; }
.layer { border: 1px solid var(--line); background: var(--surface); border-radius: var(--radius); padding: .55rem .9rem; font-size: .9rem; }
.layer strong { display: block; font-size: .95rem; }
.layer.lazy { border-style: dashed; }
.layer .tag { float: right; font-size: .72rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .07em; }

.quiz { margin-top: 1rem; }
.q { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.2rem; margin: 1rem 0; }
.q .stem { font-weight: 600; margin-bottom: .6rem; }
.q .opt { display: block; width: 100%; text-align: left; margin: .3rem 0; padding: .55rem .8rem; border-radius: 8px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); font: inherit; font-size: .92rem; cursor: pointer; }
.q .opt:hover:not(:disabled) { border-color: var(--accent); }
.q .opt.correct { border-color: var(--good); background: color-mix(in srgb, var(--good) 12%, var(--bg)); }
.q .opt.wrong { border-color: var(--bad); background: color-mix(in srgb, var(--bad) 12%, var(--bg)); }
.q .why { display: none; margin-top: .6rem; font-size: .88rem; color: var(--muted); border-top: 1px dashed var(--line); padding-top: .6rem; }
.q.answered .why { display: block; }
.scorebar { position: sticky; bottom: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: .7rem 1rem; margin-top: 1.5rem; font-weight: 600; display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
button.action { background: var(--accent); border: none; color: #fff; font: inherit; font-weight: 600; padding: .5rem 1.1rem; border-radius: 8px; cursor: pointer; }
button.action.secondary { background: var(--surface); color: var(--ink); border: 1px solid var(--line); }
footer.course { margin-top: 3.5rem; border-top: 1px solid var(--line); padding-top: 1rem; font-size: .82rem; color: var(--muted); }

/* Paged lesson player */
.stepnav { display: flex; flex-wrap: wrap; gap: .4rem; margin: 1.2rem 0 1.6rem; }
.step-pill {
  border: 1px solid var(--line); background: var(--surface); color: var(--muted);
  font: inherit; font-size: .8rem; font-weight: 600; padding: .32rem .75rem;
  border-radius: 999px; cursor: pointer;
}
.step-pill:hover { border-color: var(--accent); color: var(--ink); }
.step-pill.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.step-pill.seen:not(.active) { color: var(--ink); }
.lesson-section { display: none; animation: fadein .18s ease; }
.lesson-section.active { display: block; }
@keyframes fadein { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
.lessonfoot { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-top: 2.2rem; border-top: 1px solid var(--line); padding-top: 1.1rem; }
.lessonfoot .where { font-size: .82rem; color: var(--muted); }

/* Rich quiz explanations */
.q .why .verdict { font-weight: 700; color: var(--good); }
.q.answered .opt.wrong ~ .why .verdict,
.q .why .verdict.miss { color: var(--bad); }
.why-label { display: block; font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); margin: .7rem 0 .2rem; }
.q .why pre { margin: .35rem 0 .2rem; font-size: .82rem; }
.q .why p { margin: .25rem 0; color: var(--ink); }

/* inline icon system: Phosphor Duotone (MIT), vendored via Iconify API */
.ic { width: 1em; height: 1em; vertical-align: -0.125em; display: inline-block; }

/* copy-paste prompt packs */
.pbox { position: relative; margin: .6rem 0; }
.pbox pre { margin: 0; white-space: pre-wrap; font-size: .88rem; line-height: 1.5; padding: .75rem 5rem .75rem .9rem; }
.pcopy { position: absolute; top: .5rem; right: .5rem; font: inherit; font-size: .74rem; font-weight: 700; padding: .25rem .7rem; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); color: var(--accent); cursor: pointer; }
.pcopy:hover { border-color: var(--accent); }
.pstep { margin: 1.1rem 0 .3rem; }

/* prompt pack subpages */
.pentry { border: 1px solid var(--line); border-radius: 12px; padding: 1rem 1.2rem 1.1rem; margin: 1rem 0; background: var(--surface); }
.pentry h3 { margin: 0 0 .5rem; }
.pnum { display: inline-block; min-width: 1.5em; text-align: center; background: var(--accent); color: #fff; border-radius: 999px; font-size: .8em; padding: .1em .35em; margin-right: .45em; }
.psee { font-size: .92rem; margin: .6rem 0 0; }
.psee strong { color: var(--accent); }

/* flip cards */
.flip-row { display: grid; grid-template-columns: 1fr 1fr; gap: .9rem; margin: 1rem 0; }
@media (max-width: 700px) { .flip-row { grid-template-columns: 1fr; } }
.flip { perspective: 1000px; background: none; border: none; padding: 0; cursor: pointer; text-align: left; font: inherit; color: inherit; min-height: 17rem; }
.flip-inner { position: relative; display: block; width: 100%; height: 100%; min-height: inherit; transition: transform .5s; transform-style: preserve-3d; }
.flip.on .flip-inner { transform: rotateY(180deg); }
.flip-face { position: absolute; inset: 0; display: flex; flex-direction: column; gap: .55rem; padding: 1rem 1.1rem; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); backface-visibility: hidden; -webkit-backface-visibility: hidden; overflow-y: auto; font-size: .92rem; line-height: 1.5; }
.flip-back { transform: rotateY(180deg); }
.flip.good .flip-face { border-left: 4px solid #2e9960; }
.flip.bad .flip-face { border-left: 4px solid #d64545; }
.flip-front strong { font-size: 1rem; }
.flip-front em { margin-top: auto; font-style: normal; font-size: .8rem; font-weight: 700; color: var(--accent); }
.flip-face ul { margin: 0; padding-left: 1.1rem; display: flex; flex-direction: column; gap: .4rem; }

/* interactive learning widgets */
.preq, .selfex, .predict, .scenario { border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: 12px; background: var(--surface); padding: 1rem 1.1rem; margin: 1.1rem 0; }
.wtag { display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--accent); margin-bottom: .35rem; }
.preq p, .selfex p, .predict p, .scenario p { margin: .2rem 0 .5rem; }
.pans { display: none; margin-top: .7rem; padding-top: .7rem; border-top: 1px dashed var(--line); font-size: .95rem; }
.pans.on { display: block; }
.pans p { margin: 0; }
.wbtn { font: inherit; font-size: .82rem; font-weight: 700; padding: .3rem .9rem; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); color: var(--accent); cursor: pointer; margin-top: .3rem; }
.wbtn:hover { border-color: var(--accent); }
.popt { display: block; width: 100%; text-align: left; font: inherit; font-size: .92rem; padding: .55rem .8rem; margin: .4rem 0; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); cursor: pointer; color: inherit; }
.popt:hover { border-color: var(--accent); }
.predict.done .popt { cursor: default; }
.popt.right { border-color: #2e9960; box-shadow: inset 0 0 0 1px #2e9960; }
.popt.wrong { border-color: #d64545; box-shadow: inset 0 0 0 1px #d64545; }
.popt.sel { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.sout { display: none; margin-top: .6rem; padding: .7rem .9rem; border-radius: 10px; border: 1px dashed var(--line); font-size: .92rem; }
.sout.on { display: block; }
.selfex textarea { width: 100%; min-height: 3.2rem; font: inherit; font-size: .9rem; padding: .5rem .7rem; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); color: inherit; display: block; margin-bottom: .4rem; }
.flip-row.single { grid-template-columns: 1fr; max-width: 36rem; }

/* inline figure graphics */
.gfx { margin: 1.1rem 0; }
.gfx svg { width: 100%; height: auto; display: block; }
.gfx figcaption { font-size: .85rem; color: #6b7078; margin-top: .35rem; }

/* editor-style repo view figures */
.repoview { display: grid; grid-template-columns: minmax(12rem, 2fr) 3fr; gap: 0; margin: 1rem 0 .3rem; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
@media (max-width: 700px) { .repoview { grid-template-columns: 1fr; } }
.rv-tree { background: var(--surface); border-right: 1px solid var(--line); padding: .7rem .6rem; font-family: ui-monospace, Menlo, monospace; font-size: .84rem; }
.rv-item { padding: .18rem .5rem; border-radius: 6px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rv-item.folder { font-weight: 700; }
.rv-item.lv1 { margin-left: 1.1rem; }
.rv-item.lv2 { margin-left: 2.2rem; }
.rv-item.sel { background: color-mix(in srgb, var(--accent) 16%, var(--surface)); outline: 1px solid var(--accent); }
.rv-file { padding: .7rem .9rem; }
.rv-fname { font-family: ui-monospace, Menlo, monospace; font-size: .84rem; font-weight: 700; color: var(--accent); margin-bottom: .45rem; }
.rv-file pre { margin: 0; font-size: .86rem; }
.rv-cap { font-size: .85rem; color: #6b7078; margin: .35rem 0 1rem; }
.namebreak { margin: .9rem 0; }
.namebreak .nb-name { margin: 0 0 .25rem; font-size: 1.05rem; }
.nb-labels { margin: 0; font-size: .85rem; font-weight: 700; }
.nb-a { color: var(--d3); }
.nb-b { color: var(--d2); }
.nb-c { color: var(--d4); }

/* tool-trail comparison figures */
h4 { font-size: .98rem; margin: 1.7rem 0 .4rem; }
.trailfig { display: grid; grid-template-columns: 1fr 1fr; gap: .9rem; margin: 1rem 0 1.2rem; }
@media (max-width: 700px) { .trailfig { grid-template-columns: 1fr; } }
.trailfig.single { grid-template-columns: 1fr; max-width: 38rem; }
.tf-col { border: 1px solid var(--line); border-radius: 12px; background: var(--surface); padding: .85rem .95rem; }
.tf-col.tf-good { border-left: 4px solid var(--good); }
.tf-col.tf-bad { border-left: 4px solid var(--bad); }
.tf-prompt { font-family: ui-monospace, Menlo, monospace; font-size: .8rem; line-height: 1.5; background: var(--accent-soft); border-radius: 8px; padding: .5rem .65rem; margin: 0 0 .55rem; }
.tf-line { display: flex; gap: .6rem; align-items: baseline; font-family: ui-monospace, Menlo, monospace; font-size: .8rem; padding: .28rem .1rem; border-bottom: 1px dashed var(--line); }
.tf-tool { font-weight: 700; min-width: 3rem; color: var(--accent); flex-shrink: 0; }
.tf-ans { border-bottom: none; font-family: inherit; font-style: italic; }
.tf-cap { font-size: .82rem; color: var(--muted); margin: .55rem 0 0; }

/* MCP server source cards */
.srcstack { display: flex; flex-direction: column; gap: .7rem; margin: 1rem 0 1.2rem; }
.src { border: 1px solid var(--line); border-radius: 12px; background: var(--surface); padding: .8rem 1rem .9rem; font-size: .93rem; }
.src p { margin: .3rem 0; }
.src-dir { border-left: 4px solid var(--accent); }
.src-vendor { border-left: 4px solid var(--good); }
.src-comm { border-left: 4px solid var(--bad); }
.src-head { display: flex; align-items: center; gap: .45rem; font-size: 1rem; }
.src-badge { margin-left: auto; font-size: .68rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; padding: .15rem .6rem; border-radius: 999px; border: 1px solid; white-space: nowrap; }
.src-dir .src-badge { color: var(--accent); }
.src-vendor .src-badge { color: var(--good); }
.src-comm .src-badge { color: var(--bad); }
.src-ex { border-top: 1px dashed var(--line); padding-top: .5rem; margin-top: .55rem; font-size: .9rem; }
.src-ex strong { color: var(--accent); }

/* Hosted site: auth gate, sign in forms, roster */
html[data-gate] body { visibility: hidden; }
.authbar { position: fixed; top: .6rem; right: .8rem; display: flex; gap: .8rem; align-items: center; font-size: .8rem; color: var(--muted); background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: .3rem .9rem; z-index: 50; }
.authbar a { color: var(--accent); font-weight: 600; text-decoration: none; }
.auth-wrap { max-width: 460px; }
.auth-tabs { display: flex; gap: .4rem; margin-bottom: 1.2rem; }
.auth-form { display: flex; flex-direction: column; gap: .9rem; }
.auth-form[hidden], .auth-tabs[hidden] { display: none; }
.auth-form label { display: flex; flex-direction: column; gap: .3rem; font-size: .88rem; font-weight: 600; }
.auth-form input { font: inherit; padding: .55rem .7rem; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); color: var(--ink); }
.auth-form input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.auth-actions { display: flex; align-items: center; gap: 1rem; margin-top: .3rem; font-size: .88rem; }
.wrap-wide { max-width: 1100px; }
.cell-done { background: color-mix(in srgb, var(--good) 14%, var(--bg)); }

/* Landing page: landscape layout, two halves */
.wrap-wide { max-width: 1200px; }
header.landing .sub { max-width: 60ch; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; margin: 1.6rem 0 1.2rem; }
.half { display: flex; flex-direction: column; gap: .5rem; padding: 1.6rem 1.7rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; color: inherit; transition: border-color .15s; }
.half:hover { border-color: var(--accent); }
.half h2 { margin: 0; font-size: 1.45rem; }
.half p { margin: 0; color: var(--muted); font-size: .95rem; }
.half .cta { margin-top: auto; padding-top: .6rem; font-weight: 700; color: var(--accent); }
.grid-land { grid-template-columns: repeat(auto-fill, minmax(215px, 1fr)); }
.kicker a { color: inherit; text-decoration: none; }
.split.three { grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 720px) { .split, .split.three { grid-template-columns: 1fr; } }
@media (min-width: 721px) and (max-width: 1000px) { .split.three { grid-template-columns: 1fr 1fr; } }

/* Landing: icons and feature lists */
.landing-wrap { padding-top: 4rem; }
.half { padding: 2rem 2rem 1.8rem; gap: .4rem; }
.half-icon { width: 3.2rem; height: 3.2rem; border-radius: 12px; background: var(--accent-soft); color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 1.9rem; margin-bottom: .6rem; }
.half-icon .ic { width: 1em; height: 1em; }
.half h2 { font-size: 1.6rem; }
.feat { list-style: none; padding: 0; margin: .9rem 0 1.2rem; display: flex; flex-direction: column; gap: .55rem; }
.feat li { display: flex; align-items: center; gap: .7rem; font-size: .95rem; }
.feat .ic { width: 1.35em; height: 1.35em; color: var(--accent); flex: none; }
.half .cta { display: inline-flex; align-items: center; gap: .35rem; font-size: 1rem; }
.half .cta .ic { width: 1.1em; height: 1.1em; transition: transform .15s; }
.half:hover .cta .ic { transform: translateX(3px); }

.backlink { display: inline-flex; align-items: center; gap: .3rem; font-size: .85rem; font-weight: 600; color: var(--muted); text-decoration: none; margin-bottom: .8rem; }
.backlink:hover { color: var(--accent); }


/* Bright theme: stylized layer. Loaded last so it refines the rules above. */
h1, h2, h3, h4 { letter-spacing: -.02em; color: var(--ink); }
h1 { font-size: clamp(2rem, 4.5vw, 2.9rem); font-weight: 800; line-height: 1.08; }
header.course h1, header.landing h1 { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
h2 { font-weight: 800; }
header.course { border-bottom: none; position: relative; padding-bottom: 1.6rem; }
header.course::after { content: ""; position: absolute; left: 0; bottom: 0; width: 120px; height: 4px; border-radius: 999px; background: var(--grad); }
.kicker { display: inline-block; background: var(--accent-soft); color: var(--accent); padding: .3rem .8rem; border-radius: 999px; font-size: .72rem; }
a { color: var(--accent); }
code { background: var(--violet-soft); color: #5a3fd6; }
pre { box-shadow: var(--shadow); }
pre code { color: inherit; }

.card, .half, .q, .pentry, .tf-col, .src, .layer, .preq, .selfex, .predict, .scenario, .flip-face, .scorebar, .d-card {
  border-color: var(--line);
  box-shadow: var(--shadow);
}
.card, .half { border-radius: var(--radius); position: relative; overflow: hidden; transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease; }
.card::before, .half::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 4px; background: var(--grad); opacity: .85; }
a.card:hover, .half:hover { transform: translateY(-3px); box-shadow: var(--shadow-lift); border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.half { background: linear-gradient(160deg, #ffffff 0%, #fff6f0 55%, #f6f1ff 100%); }
.half-icon { background: var(--grad); color: #fff; box-shadow: 0 8px 20px rgba(240,69,122,.25); }
.feat .ic, .half .cta { color: var(--accent); }

.pill { box-shadow: 0 1px 2px rgba(60,40,120,.06); transition: transform .15s, border-color .15s; }
.pill:hover { transform: translateY(-1px); border-color: var(--accent); color: var(--accent); }
.step-pill.active, .pnum { background: var(--grad); border-color: transparent; }
button.action, .btn.primary { background: var(--grad); border: none; box-shadow: 0 6px 16px rgba(240,69,122,.25); transition: transform .15s, box-shadow .15s; }
button.action:hover, .btn.primary:hover { transform: translateY(-1px); box-shadow: 0 10px 22px rgba(240,69,122,.32); }
button.action.secondary { background: var(--surface); box-shadow: var(--shadow); }

.callout { background: linear-gradient(90deg, #fff4ec 0%, #ffffff 70%); box-shadow: var(--shadow); }
.callout.flag { background: linear-gradient(90deg, #ffeceb 0%, #ffffff 70%); }
.preq, .selfex, .predict, .scenario { border-left-color: var(--accent-2); background: linear-gradient(90deg, #f6f2ff 0%, #ffffff 60%); }
.wtag { color: var(--accent-2); }
.q .opt { background: #fbfaff; border-radius: 10px; }
.q .opt:hover:not(:disabled), .popt:hover { border-color: var(--accent-2); }
.authbar { box-shadow: var(--shadow); }
.auth-form input { background: #fbfaff; }
footer.course { border-top: none; }