:root{
  --green:#172A1D; --maroon:#3B0F17; --wine:#47111A;
  --cream:#F6F0E6; --parchment:#E8DCC8; --card:#FFF9EF; --ink:#1D1714; --muted:#6F6258; --gold:#C89B52;
  --line:#E8DCC8; --input-line:#D8CBB8;
  --good:#172A1D; --good-bg:#E6ECE3; --good-line:#6E8a72;
  --bad:#8F1D2C; --bad-bg:#F5E6E3;
  --warn:#6b4a1c; --warn-bg:#F1E4CC;
  --font-heading:"Fraunces","Cormorant Garamond",Georgia,serif;
  --font-body:"Manrope","Inter",system-ui,sans-serif;
  --r-card:8px; --r-btn:10px; --r-badge:5px;
  --shadow:0 8px 24px rgba(29,23,20,.08); --shadow-hover:0 12px 32px rgba(29,23,20,.12);
  color-scheme:light;
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--cream);color:var(--ink);font:16.5px/1.6 var(--font-body);-webkit-font-smoothing:antialiased;
  background-image:radial-gradient(rgba(23,42,29,.035) 1px,transparent 1px);background-size:22px 22px}
.wrap{max-width:900px;margin:0 auto;padding:0 16px}
a{color:var(--green);text-decoration-color:rgba(23,42,29,.35);text-underline-offset:3px;transition:color .2s}
a:hover{color:var(--maroon)}
h1,h2,h3{font-family:var(--font-heading);font-weight:600;color:var(--green);margin:0 0 .35em;line-height:1.1;font-optical-sizing:auto}
h1{font-size:40px;letter-spacing:-.015em} h2{font-size:28px} h3{font-size:21px}
.muted{color:var(--muted)} .small{font-size:14.5px} .tiny{font-size:12.5px;color:var(--muted);letter-spacing:.02em}

/* nav */
.top{background:rgba(246,240,230,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.top-in{display:flex;align-items:center;gap:20px;min-height:68px;flex-wrap:wrap}
.brand{display:flex;align-items:center;text-decoration:none}
.brand img{height:44px;width:auto;display:block}
nav{display:flex;gap:2px;flex-wrap:wrap;margin-left:auto}
nav a{position:relative;padding:8px 12px;text-decoration:none;color:var(--ink);font-weight:600;font-size:15px}
nav a::after{content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;background:var(--maroon);transform:scaleX(0);transform-origin:left;transition:transform .28s ease}
nav a:hover{color:var(--maroon)} nav a:hover::after{transform:scaleX(1)}
nav a.on{color:var(--green)} nav a.on::after{transform:scaleX(1)}
.banner{background:var(--parchment);color:var(--wine);text-align:center;padding:8px 16px;font-size:14px;font-weight:600}
main{padding:40px 16px 96px}

/* surfaces */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--shadow);margin-bottom:20px;animation:rise .35s ease both}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:18px 20px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s;animation:rise .35s ease both}
.stat:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.stat b{display:block;font:600 30px/1.1 var(--font-heading);color:var(--green);margin-bottom:4px}
.stat span{font-size:13.5px;color:var(--muted)}
@keyframes rise{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* buttons */
.btn{appearance:none;border:1px solid var(--green);background:var(--card);color:var(--green);padding:11px 20px;border-radius:var(--r-btn);font:600 15px var(--font-body);cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:8px;transition:background .25s,color .25s,border-color .25s,transform .15s}
.btn:hover{background:var(--parchment);color:var(--green)}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--green);border-color:var(--green);color:var(--card)}
.btn.primary:hover{background:var(--maroon);border-color:var(--maroon);color:var(--card)}
.btn.accent{background:var(--maroon);border-color:var(--maroon);color:var(--card)}
.btn.accent:hover{background:var(--wine)}
.btn.big{padding:14px 26px;font-size:16px}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.ghost{border-color:transparent;background:transparent;padding-left:6px}
.btn.ghost:hover{background:transparent;color:var(--maroon)}

/* forms */
input[type=text],input[type=password],textarea,select{font:inherit;color:var(--ink);background:var(--card);border:1px solid var(--input-line);border-radius:var(--r-btn);padding:11px 13px;width:100%;transition:border-color .2s,box-shadow .2s}
input::placeholder,textarea::placeholder{color:var(--muted)}
textarea{min-height:130px;resize:vertical}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(23,42,29,.16)}
.btn:focus-visible,.opt:focus-visible,.chip:focus-visible{outline:2px solid var(--green);outline-offset:2px}

/* badges */
.pill{display:inline-block;font-size:11.5px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;padding:4px 9px;border-radius:var(--r-badge);background:var(--parchment);color:var(--muted)}
.pill.review{background:var(--maroon);color:var(--card)}
.pill.new{background:var(--green);color:var(--card)}
.pill.quiz{background:var(--card);color:var(--maroon);border:1px solid var(--maroon)}
.bar{height:8px;background:var(--parchment);border-radius:99px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--green);border-radius:99px;transition:width .6s ease}

/* question */
.qhead{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:16px;flex-wrap:wrap}
.stem{font:500 21px/1.45 var(--font-heading);color:var(--ink);margin:6px 0 22px}
.opts{display:flex;flex-direction:column;gap:12px}
.opt{display:flex;gap:14px;align-items:flex-start;text-align:left;width:100%;background:var(--card);border:1px solid var(--input-line);border-radius:var(--r-card);padding:14px 16px;font:inherit;color:var(--ink);cursor:pointer;transition:border-color .2s,transform .15s,box-shadow .2s}
.opt:hover:not(:disabled){border-color:var(--green);transform:translateY(-1px);box-shadow:var(--shadow)}
.opt .k{flex:none;width:28px;height:28px;border-radius:var(--r-badge);border:1px solid var(--input-line);display:grid;place-items:center;font:600 13px var(--font-body);color:var(--muted);background:var(--cream)}
.opt:disabled{cursor:default}
.opt.right{border-color:var(--good-line);background:var(--good-bg)}
.opt.right .k{background:var(--green);border-color:var(--green);color:var(--card)}
.opt.wrong{border-color:var(--bad);background:var(--bad-bg)}
.opt.wrong .k{background:var(--maroon);border-color:var(--maroon);color:var(--card)}
.opt .why{display:block;font-size:14.5px;color:var(--muted);margin-top:6px}
.fb{margin-top:22px;border-radius:var(--r-card);padding:18px 20px;border-left:3px solid;animation:rise .3s ease both}
.fb.good{background:var(--good-bg);border-color:var(--green)}
.fb.bad{background:var(--bad-bg);border-color:var(--maroon)}
.fb.neutral{background:var(--cream);border-color:var(--gold)}
.fb h3{margin:0 0 6px;font-size:20px}
.fb.bad h3{color:var(--maroon)}
.fb p{margin:.35em 0}
.fb details summary{color:var(--green);font-weight:600}
.src{font-size:13px;color:var(--muted);margin-top:10px;font-style:italic}
.match-row{display:grid;grid-template-columns:1fr 220px;gap:14px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}
.match-row:last-child{border-bottom:0}
.match-row.right select{border-color:var(--good-line);background:var(--good-bg)}
.match-row.wrong select{border-color:var(--bad);background:var(--bad-bg)}
.kp{list-style:none;padding:0;margin:8px 0}
.kp li{display:flex;gap:10px;align-items:flex-start;padding:6px 0}
.kp input{margin-top:5px;width:18px;height:18px;accent-color:var(--green)}
.foot{display:flex;justify-content:space-between;align-items:center;margin-top:22px;gap:10px;flex-wrap:wrap}

/* lists */
.list{display:flex;flex-direction:column;gap:12px}
details.q{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);transition:box-shadow .2s,transform .2s}
details.q:hover{box-shadow:var(--shadow);transform:translateY(-1px)}
details.q summary{cursor:pointer;padding:15px 18px;list-style:none;display:flex;gap:10px;align-items:flex-start}
details.q summary::-webkit-details-marker{display:none}
details.q[open] summary{border-bottom:1px solid var(--line)}
details.q .body{padding:16px 18px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{border:1px solid var(--input-line);background:var(--card);border-radius:var(--r-btn);padding:7px 13px;font:600 14px var(--font-body);cursor:pointer;color:var(--ink);transition:all .2s}
.chip:hover{border-color:var(--maroon);color:var(--maroon)}
.chip.on{background:var(--green);color:var(--card);border-color:var(--green)}
table{width:100%;border-collapse:collapse;font-size:15px}
th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line)}
th{font-weight:700;color:var(--muted);font-size:12px;letter-spacing:.06em;text-transform:uppercase}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}

/* login */
.login{max-width:440px;margin:8vh auto 0;text-align:center;padding:40px 34px}
.login img{width:230px;max-width:80%;margin:0 auto 14px;display:block}
.login form{text-align:left}
.toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);background:var(--wine);color:var(--card);padding:11px 18px;border-radius:var(--r-btn);font-size:14px;z-index:20;box-shadow:var(--shadow-hover)}
.center{text-align:center}
.hero{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:flex-end;margin-bottom:26px}
.hero .tiny{text-transform:uppercase;letter-spacing:.12em;color:var(--maroon);font-weight:700;margin-bottom:6px}
.kbd{font:12px ui-monospace,monospace;border:1px solid var(--input-line);border-radius:4px;padding:1px 5px;color:var(--muted);background:var(--cream)}
.rule{height:1px;background:linear-gradient(90deg,transparent,var(--gold),transparent);opacity:.5;margin:8px 0 26px}

@media (max-width:640px){
  h1{font-size:32px} .stem{font-size:19px} main{padding-top:28px}
  .match-row{grid-template-columns:1fr} .brand img{height:34px} .card{padding:20px}
}
[hidden]{display:none!important}
.readlink{font-weight:600;color:var(--green);text-decoration:none;border-bottom:1px solid rgba(23,42,29,.25);font-style:normal}
.readlink:hover{color:var(--maroon);border-color:var(--maroon)}

.coursepick{width:auto;min-width:0;font:600 14px var(--font-body);color:var(--green);background:var(--card);border:1px solid var(--input-line);border-radius:var(--r-btn);padding:8px 30px 8px 12px;cursor:pointer}
.opt.multi{cursor:pointer}
.opt.multi input{flex:none}
@media (max-width:640px){.coursepick{order:3;width:100%}}

.coursepick{max-width:250px;font-size:13.5px}
.top-in{flex-wrap:nowrap}
@media (max-width:860px){.top-in{flex-wrap:wrap;padding-bottom:8px}.coursepick{max-width:none}}
.opt.missed{border:1.5px dashed var(--maroon);background:var(--card)}
.opt.missed .k{background:var(--maroon);border-color:var(--maroon);color:var(--card)}
@media (max-width:640px){.top{position:static}}

/* ===== Quiz refinement (approved mock) ===== */
#qcard{position:relative;border-radius:12px;padding:34px 34px 28px}
#qcard .qmark{position:absolute;top:22px;right:24px;width:32px;opacity:.9;pointer-events:none}
#qcard .stem{font-size:23px;line-height:1.42;margin:6px 48px 28px 0}
.opts{gap:14px}
.opt{position:relative;align-items:center;border:1px solid var(--parchment);border-radius:10px;padding:16px 18px;font-weight:500;
  transition:background-color .22s ease-out,border-color .22s ease-out,color .22s ease-out,transform .22s ease-out,box-shadow .22s ease-out,opacity .22s ease-out}
.opt .k{width:30px;height:30px;border-radius:7px;border-color:var(--parchment);transition:all .22s ease-out}
.opt:hover:not(:disabled){border-color:var(--green);background:#FBF4E8;transform:none;box-shadow:none}
.opt:hover:not(:disabled) .k{border-color:var(--green);color:var(--green)}
.opt.correct{background:var(--green);color:var(--card);border-color:var(--maroon);transform:scale(1.01)}
.opt.correct .k{background:var(--card);color:var(--green);border-color:var(--card)}
.opt.correct .why{color:var(--parchment)}
.opt.reveal{border-color:var(--green);box-shadow:inset 3px 0 0 var(--green);background:var(--card)}
.opt.reveal .k{border-color:var(--green);color:var(--green)}
.opt.wrong{border-color:var(--maroon);background:#F7EDE8}
.opt.wrong .k{background:var(--maroon);border-color:var(--maroon);color:var(--card)}
.opt.dim{opacity:.55}
.celebrate-host{position:relative}
.ring{position:absolute;inset:-1px;border-radius:11px;border:1px solid var(--maroon);pointer-events:none;opacity:.35;animation:w52ring .75s ease-out forwards}
@keyframes w52ring{to{inset:-11px;border-radius:16px;opacity:0}}
.fx{position:absolute;inset:0;pointer-events:none;overflow:visible}
.fx .p{position:absolute;border-radius:50%;opacity:0;animation:w52drift var(--d) ease-out forwards}
@keyframes w52drift{0%{opacity:.9;transform:translate(0,0)}100%{opacity:0;transform:translate(var(--x),var(--y))}}
.fx .spark{position:absolute;width:13px;height:13px;top:-7px;right:14px;opacity:0;animation:w52spark .8s ease-out forwards}
@keyframes w52spark{0%{opacity:0;transform:scale(.6) rotate(0)}40%{opacity:1;transform:scale(1) rotate(12deg)}100%{opacity:0;transform:scale(.9) rotate(24deg)}}
.cheer{min-height:22px;margin:14px 2px 0;font-size:14.5px;font-weight:600;color:var(--maroon);opacity:0;transform:translateY(3px);transition:opacity .35s ease-out,transform .35s ease-out}
.cheer.on{opacity:1;transform:none}
.qprog{position:relative;height:6px;border-radius:99px;background:var(--parchment);overflow:hidden;margin:-4px 0 22px}
.qprog i{position:absolute;inset:0 auto 0 0;background:var(--green);border-radius:99px;transition:width .6s cubic-bezier(.2,.7,.2,1)}
.qprog i::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(232,220,200,.9),transparent);transform:translateX(-100%);opacity:0}
.qprog.shimmer i::after{animation:w52shimmer .85s ease-out 1}
@keyframes w52shimmer{0%{transform:translateX(-100%);opacity:1}100%{transform:translateX(100%);opacity:0}}
.fb{border-radius:10px}
@media (max-width:640px){#qcard{padding:24px 18px 20px}#qcard .stem{font-size:19.5px;margin-right:36px}#qcard .qmark{width:26px;top:16px;right:14px}}
#qcard > .row:first-of-type{padding-right:44px}
.kpl{margin:4px 0 0;padding-left:20px}.kpl li{margin:2px 0}
@media (max-width:640px){#qcard > .row:first-of-type{padding-right:34px}}
.coach{margin-top:14px;background:var(--card);border:1px solid var(--parchment);border-left:3px solid var(--maroon);border-radius:10px;padding:14px 16px}
.coach-h{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--maroon);font-size:14.5px}
.coach-dot{width:7px;height:7px;border-radius:50%;background:var(--maroon);flex:none}
.coach-n{margin-left:auto;font-size:12px;font-weight:600;color:var(--muted)}
.coach p{margin:6px 0 0;font-size:15px;color:var(--ink)}

/* ===== Joy accents: small moments only (never text or main buttons) ===== */
:root{--mint:#BFE8C9;--spring:#A8D66D;--butter:#F6D86B;--coral:#E86F7A;--sky:#7DB7E8}
/* progress: hunter green bar with a faint mint tip + butter/mint shimmer */
.bar i,.qprog i{background:linear-gradient(90deg,var(--green) 0%,var(--green) calc(100% - 10px),#3E6B4A 100%)}
.qprog i::after{background:linear-gradient(90deg,transparent,rgba(246,216,107,.85),rgba(191,232,201,.9),transparent)}
/* tiny status dots on badges */
.pill.new::before,.pill.review::before,.pill.quiz::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;margin-right:6px;vertical-align:1px}
.pill.new::before{background:var(--sky)}
.pill.review::before{background:var(--coral)}
.pill.quiz::before{background:var(--butter)}
/* answer-card hover shimmer: a soft mint sweep, once per hover */
.opt{overflow:hidden}
.opt.multi,.opt.correct{overflow:visible}
.opt::before{content:"";position:absolute;top:0;bottom:0;left:-40%;width:35%;background:linear-gradient(90deg,transparent,rgba(191,232,201,.45),transparent);opacity:0;pointer-events:none}
.opt:hover:not(:disabled)::before{animation:w52sweep .9s ease-out 1}
@keyframes w52sweep{0%{left:-40%;opacity:1}100%{left:110%;opacity:0}}
/* streak moment */
.stat.streak b{display:flex;align-items:center;gap:8px}
.stat.streak .sp{width:14px;height:14px}
.stat .dot{display:inline-block;width:6px;height:6px;border-radius:50%;margin-right:6px;vertical-align:1px}
.cheer::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--spring);margin-right:8px;vertical-align:2px}
.coach-dot{background:var(--coral)}
@media (prefers-reduced-motion:reduce){.opt::before{display:none}}
table.cmp{margin:6px 0 4px}
table.cmp th{font-size:11px}
table.cmp td{vertical-align:top}
table.cmp td:nth-child(2),table.cmp td:nth-child(3){white-space:nowrap}
table.cmp tr.is-ans td:first-child{font-weight:700;color:var(--green)}
table.cmp tr.is-wrong{background:#F7EDE8}
.mk{display:inline-grid;place-items:center;width:18px;height:18px;border-radius:50%;font-size:11px;font-weight:800;margin-right:4px}
.mk.ok{background:var(--green);color:var(--card)}
.mk.no{background:var(--maroon);color:var(--card)}
@media (max-width:640px){table.cmp td:nth-child(2),table.cmp td:nth-child(3){white-space:normal}}
/* why box */
.why-box{margin-top:14px;background:var(--card);border:1px solid var(--parchment);border-left:3px solid var(--sky);border-radius:10px;padding:14px 16px}
.why-box input{padding:9px 12px}
/* flashcard game */
.deck-stats{gap:8px}
.flip{perspective:1400px;cursor:pointer}
.flip-in{position:relative;display:grid;transition:transform .5s cubic-bezier(.2,.7,.2,1);transform-style:preserve-3d}
.flip.on .flip-in{transform:rotateY(180deg)}
.flip .face{grid-area:1/1;backface-visibility:hidden;-webkit-backface-visibility:hidden;margin:0;min-height:260px;position:relative;padding:30px 30px 26px}
.flip .back{transform:rotateY(180deg)}
.flip .front .qmark{position:absolute;top:22px;right:24px;width:30px}
.flip .stem{font:500 21px/1.42 var(--font-heading)}
.flip:hover .front{border-color:var(--green)}
#rate .kbd{margin-left:6px}
/* pairs */
.pair-h{display:flex;align-items:center;gap:10px;font:600 20px var(--font-heading);color:var(--green);margin-bottom:12px;flex-wrap:wrap}
.pair-h .vs{font:700 11px var(--font-body);letter-spacing:.12em;text-transform:uppercase;color:var(--maroon);border:1px solid var(--parchment);border-radius:99px;padding:3px 9px}
.pair-g{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.pair-g>div{background:var(--cream);border:1px solid var(--parchment);border-radius:10px;padding:12px 14px}
.pair-g p{margin:4px 0 0;font-size:15px}
.pair-hook{margin:12px 0 12px;font-size:15px}
.dot{display:inline-block;width:7px;height:7px;border-radius:50%;margin-right:6px;vertical-align:1px}
@media (max-width:640px){.pair-g{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){.flip-in{transition:none}}
.flip .face{animation:none}
.deck-card{position:relative;padding:30px 30px 24px}
.deck-card .qmark{position:absolute;top:22px;right:24px;width:30px}
.deck-card .stem{font:500 21px/1.42 var(--font-heading);margin:8px 40px 20px 0}
.reveal-panel{display:grid;grid-template-rows:0fr;transition:grid-template-rows .4s cubic-bezier(.2,.7,.2,1)}
.reveal-panel.on{grid-template-rows:1fr}
.reveal-panel>.rp-in{overflow:hidden;margin-top:16px;border-top:1px solid var(--parchment);padding-top:14px}
.reveal-panel:not(.on)>.rp-in{padding-top:0;margin-top:0;border-top:0}
.deck-grid .dg-row{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:12px 10px;border-bottom:1px solid var(--parchment);border-radius:8px;transition:background .22s ease-out}
.deck-grid .dg-row.right{background:var(--good-bg)}
.deck-grid .dg-row.wrong{background:#F7EDE8}
.deck-grid .chip.ans{box-shadow:inset 0 0 0 2px var(--green)}
@media (max-width:640px){.deck-grid .dg-row{flex-direction:column;align-items:flex-start}}
.deck-grid .chips{flex-wrap:nowrap;flex:none}
.deck-grid .chip:disabled{opacity:1;cursor:default}
.deck-grid .chip:disabled:not(.on):not(.ans){opacity:.5}
@media (max-width:1100px){nav a{padding:8px 8px;font-size:14.5px}.coursepick{max-width:210px}}
/* comeback moment */
.cheer.comeback-wrap{min-height:0}
.cheer.comeback-wrap::before{display:none}
.comeback{display:flex;gap:14px;align-items:flex-start;margin-top:6px;padding:16px 18px;border-radius:12px;background:linear-gradient(135deg,#FFF9EF 0%,#F4F8EF 55%,#FBF3DC 100%);border:1px solid var(--parchment);border-left:3px solid var(--green);box-shadow:0 8px 24px rgba(29,23,20,.06)}
.cb-spark{width:22px;height:22px;flex:none;margin-top:2px;animation:w52spin 1.1s ease-out 1}
@keyframes w52spin{0%{transform:scale(.4) rotate(-30deg);opacity:0}60%{transform:scale(1.1) rotate(8deg);opacity:1}100%{transform:scale(1) rotate(0)}}
.cb-k{font:700 11px var(--font-body);letter-spacing:.14em;text-transform:uppercase;color:var(--maroon)}
.cb-t{font:600 20px/1.3 var(--font-heading);color:var(--green);margin-top:2px}
.cb-n{font-size:14px;color:var(--muted);margin-top:4px;font-weight:500}
.cb-line{display:flex;align-items:center;gap:8px;margin:14px 0 0;font-size:15px;color:var(--ink);flex-wrap:wrap}
.cb-line svg{width:16px;height:16px;flex:none}
/* set complete */
.complete{max-width:620px;margin:20px auto 0;text-align:center;padding:44px 28px 36px;background:radial-gradient(120% 80% at 50% 0%,#FFFCF4 0%,var(--card) 60%)}
.cmp-ring{position:relative;width:120px;height:120px;margin:0 auto 18px}
.cmp-ring svg{width:120px;height:120px;transform:rotate(-90deg)}
.cmp-ring .track{fill:none;stroke:var(--parchment);stroke-width:3}
.cmp-ring .arc{fill:none;stroke:var(--green);stroke-width:3;stroke-linecap:round;stroke-dasharray:327;stroke-dashoffset:327;animation:w52draw 1.1s cubic-bezier(.2,.7,.2,1) .15s forwards}
@keyframes w52draw{to{stroke-dashoffset:0}}
.cmp-ring img{position:absolute;inset:0;margin:auto;width:58px;opacity:0;animation:w52fadein .6s ease-out .9s forwards}
@keyframes w52fadein{to{opacity:1}}
.cmp-k{font:700 11.5px var(--font-body);letter-spacing:.14em;text-transform:uppercase;color:var(--maroon)}
.cmp-h{font-size:44px;margin:6px 0 10px}
.cmp-msg{font-size:17px;color:var(--ink);max-width:460px;margin:0 auto}
.cmp-list{list-style:none;padding:0;margin:20px auto 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.cmp-list li{background:var(--cream);border:1px solid var(--parchment);border-radius:99px;padding:7px 14px;font-size:14.5px;color:var(--muted)}
.cmp-list li b{color:var(--green);font-family:var(--font-heading);font-size:17px;margin-right:3px}
@media (prefers-reduced-motion:reduce){.cmp-ring .arc{stroke-dashoffset:0}.cmp-ring img{opacity:1}}
.cmp-ring .ring{border-radius:50%;inset:-2px;animation-name:w52ringc}
@keyframes w52ringc{to{inset:-14px;opacity:0}}
@media (max-width:1100px){.coursepick{max-width:240px;font-size:13px}}
.runchip{display:inline-flex;align-items:center;gap:8px;margin:-10px 0 16px;padding:6px 14px;border-radius:99px;background:linear-gradient(90deg,#FBF3DC,#EEF7EF);border:1px solid var(--parchment);font:600 14px var(--font-body);color:var(--green);animation:w52pop .5s cubic-bezier(.2,.7,.2,1) both}
.runchip svg{width:14px;height:14px}
@keyframes w52pop{0%{opacity:0;transform:translateY(6px) scale(.96)}100%{opacity:1;transform:none}}
.halfway{display:inline-block;margin-left:10px;font-weight:600;color:var(--green);font-size:14px;padding-left:10px;border-left:1px solid var(--parchment)}
/* digital caffeine */
.brew{position:fixed;right:max(16px,calc((100vw - 900px)/2 - 200px));top:150px;width:170px;background:var(--card);border:1px solid var(--parchment);border-radius:12px;box-shadow:var(--shadow);padding:14px 12px 12px;text-align:center;z-index:4}
.brew-k{font:700 10.5px var(--font-body);letter-spacing:.14em;text-transform:uppercase;color:var(--maroon)}
.brew-cup{position:relative;width:118px;height:134px;margin:4px auto 0}
.brew .cup{width:118px;height:134px;overflow:visible}
.cup.hop{animation:w52hop .55s cubic-bezier(.2,.7,.2,1)}
@keyframes w52hop{0%{transform:translateY(0)}35%{transform:translateY(-8px) rotate(-3deg)}70%{transform:translateY(0) rotate(1.5deg)}100%{transform:none}}
.cup .coffee{transition:y .7s cubic-bezier(.2,.7,.2,1),height .7s cubic-bezier(.2,.7,.2,1)}
.cup .surface{transition:transform .7s cubic-bezier(.2,.7,.2,1)}
.cup .wave{animation:w52wave 3.2s ease-in-out infinite}
@keyframes w52wave{0%,100%{transform:translateX(0)}50%{transform:translateX(-10px)}}
.cup .steam path{fill:none;stroke:#D9CBB3;stroke-width:3;stroke-linecap:round;opacity:0;animation:w52steam 3.6s ease-in-out infinite}
.cup .steam path:nth-child(2){animation-delay:1.2s}.cup .steam path:nth-child(3){animation-delay:2.4s}
@keyframes w52steam{0%{opacity:0;transform:translateY(8px)}30%{opacity:.8}100%{opacity:0;transform:translateY(-18px)}}
.cup.hot .steam path{stroke:#CDBA9A;stroke-width:3.5;animation-duration:2.2s}
.cup .bubble{fill:#F6D86B;opacity:0}
.cup .bubble.go{animation:w52bub 1.1s ease-out forwards}
@keyframes w52bub{0%{opacity:.95;transform:translateY(0)}100%{opacity:0;transform:translateY(-34px)}}
.cup .eye{transition:transform .2s}
.cup.blink .eye{transform:scaleY(.1)}
.brew .shots{display:flex;justify-content:center;gap:4px;margin:8px 0 4px}
.brew .shots i{width:9px;height:9px;border-radius:50%;background:var(--parchment);transition:background .3s,transform .3s}
.brew .shots i.on{background:var(--maroon)}
.brew-msg{min-height:40px;font-size:13px;color:var(--muted);line-height:1.4}
.brew-msg b{color:var(--green)}
.brew .plus{position:absolute;left:50%;top:14px;transform:translateX(-50%);font:700 13px var(--font-body);color:var(--maroon);opacity:0;pointer-events:none;white-space:nowrap}
.brew .plus.go{animation:w52plus .9s ease-out forwards}
@keyframes w52plus{0%{opacity:0;transform:translate(-50%,6px)}25%{opacity:1}100%{opacity:0;transform:translate(-50%,-26px)}}
.brewed{display:inline-block;margin-top:4px;padding:5px 10px;border-radius:99px;background:linear-gradient(90deg,#FBF3DC,#EEF7EF);border:1px solid var(--parchment);font:600 12.5px var(--font-body);color:var(--green);animation:w52pop .5s cubic-bezier(.2,.7,.2,1)}
.brew .cups{display:flex;justify-content:center;flex-wrap:wrap;gap:3px;margin-top:6px}
.brew .cups svg{width:15px;height:15px}
.brew-mini{display:none;width:max-content;margin:-10px 0 12px auto;background:var(--card);border:1px solid var(--parchment);border-radius:99px;box-shadow:var(--shadow);padding:4px 12px 4px 4px;align-items:center;gap:4px}
.brew-mini .cup{width:40px;height:46px;overflow:visible}
.brew-mini .mini-n{font:700 13px var(--font-body);color:var(--maroon)}
.cmp-list li.cupli svg{width:16px;height:16px;vertical-align:-3px;margin-right:4px}
@media (max-width:1320px){.brew{display:none}.brew-mini{display:flex}}
@media (prefers-reduced-motion:reduce){.cup *{animation:none!important}}

/* lessons table of contents */
.toc h3{margin-bottom:10px}
.toc-list{display:flex;flex-direction:column}
.toc-row{display:flex;align-items:center;gap:14px;padding:12px 6px;border-top:1px solid var(--line);text-decoration:none;color:var(--ink);transition:background .2s}
.toc-row:first-child{border-top:0}
.toc-row:hover{background:var(--parchment)}
.toc-num{font:600 20px/1 var(--font-heading);color:var(--green);min-width:34px;text-align:center}
.toc-main{flex:1;display:flex;flex-direction:column;gap:3px;min-width:0}
.toc-main .pill{align-self:flex-start}
.toc-bar{width:90px;height:6px;border-radius:3px;background:var(--parchment);overflow:hidden;flex-shrink:0}
.toc-bar i{display:block;height:100%;background:var(--green)}
.toc-go{font-size:22px;color:var(--muted)}
.toc-secs{margin:0;padding-left:22px;display:flex;flex-direction:column;gap:6px}
.linkbtn{background:none;border:0;padding:0;font:600 15px var(--font-body);color:var(--green);cursor:pointer;text-align:left}
.linkbtn:hover{color:var(--maroon);text-decoration:underline}
.q.locked{display:flex;gap:10px;align-items:flex-start;padding:15px 18px;background:var(--card);border:1px dashed var(--line);border-radius:var(--r-card);color:var(--muted)}
@media (max-width:640px){.toc-bar{display:none}}

/* class tabs + home */
.classbar{border-top:1px solid var(--line);background:var(--card)}
.classbar-in{display:flex;align-items:center;gap:8px;padding-top:8px;padding-bottom:8px;flex-wrap:wrap}
.classbar-in .tiny{text-transform:uppercase;font-weight:700;margin-right:4px}
.ctab{border:1px solid var(--input-line);background:var(--card);border-radius:999px;padding:8px 18px;font:700 15px var(--font-body);color:var(--ink);cursor:pointer;transition:all .2s}
.ctab:hover{border-color:var(--maroon);color:var(--maroon)}
.ctab.on{background:var(--green);border-color:var(--green);color:var(--card)}
.classgrid{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));margin-bottom:12px}
.classcard{cursor:pointer;transition:transform .2s,box-shadow .2s;display:flex;flex-direction:column;margin-bottom:0}
.classcard:hover,.classcard:focus-visible{transform:translateY(-3px);box-shadow:var(--shadow-hover);outline:none}
.classcard h2{margin-bottom:6px}
.classcard .btn{align-self:flex-start;margin-top:auto}
.cc-bar{height:8px;border-radius:4px;background:var(--parchment);overflow:hidden}
.cc-bar i{display:block;height:100%;background:var(--green)}
@media (max-width:640px){.ctab{flex:1;padding:8px 10px;font-size:14px}.classbar-in .tiny{display:none}}

/* home greeting */
.greet{font-family:var(--font-heading);color:var(--maroon);font-size:60px;font-weight:600;letter-spacing:-.02em;line-height:1.02;margin:6px 0 14px;font-variation-settings:"opsz" 144}
.greet span{display:block;font-style:italic;font-weight:400;font-size:.6em;letter-spacing:-.005em;margin-top:6px;opacity:.85}
@media (max-width:640px){.greet{font-size:44px}}

/* mistakes card inside lessons & classes */
.miss-card{border-left:4px solid var(--maroon)}
.miss-num{text-align:center;min-width:72px}
.miss-num b{display:block;font:600 34px/1 var(--font-heading);color:var(--maroon)}
.miss-num span{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-weight:700}
.miss-list{margin-top:14px}
.miss-list summary{cursor:pointer;font-weight:600;color:var(--green)}

/* "Before you start" card at the top of a class page (text comes from lectures.json, written by us) */
.start-card { border-left: 5px solid var(--maroon); }
.start-card ol { margin: 6px 0 0; padding-left: 22px; }
.start-card li { margin: 0 0 12px; line-height: 1.5; }
.start-card li:last-child { margin-bottom: 0; }
.start-card ul { margin: 6px 0 6px; padding-left: 20px; }
.start-card ul li { margin: 0 0 6px; }

/* Study mode: slides first, then the key questions on those slides */
.study-plan { border-left: 5px solid var(--green, #2f6b3a); }
.study-cta { display:flex; gap:16px; align-items:center; justify-content:space-between; flex-wrap:wrap; border-left:5px solid var(--green, #2f6b3a); }
.study-part h2 { font-size: 1.25rem; }
.slides { display:grid; grid-template-columns: 1fr; gap:14px; margin: 10px 0 16px; }
.slide { margin:0; }
.slide img { width:100%; height:auto; display:block; border-radius:8px; border:1px solid rgba(0,0,0,.12); background:#fff; }
.slide figcaption { margin-top:4px; }
.study-check { border-top:1px dashed rgba(0,0,0,.18); padding-top:14px; }

.steps-bar { display:flex; gap:4px; margin: 0 0 14px; flex-wrap:wrap; }
.steps-bar a { flex:1 1 14px; min-width:14px; height:8px; border-radius:4px; background: rgba(0,0,0,.12); }
.steps-bar a.done { background: var(--green, #2f6b3a); }
.steps-bar a.on { background: var(--maroon, #5a1a24); }
.exam-card { border-left: 5px solid var(--maroon, #6b1f2a); }
.exam-card h2 { margin: 4px 0 8px; }
.exam-card.compact { margin-bottom: 16px; }
.miss-slide { margin-top: 14px; }
.miss-slide figcaption { margin: 0 0 6px; }
.gorder { display:inline-flex; vertical-align:middle; max-width:100%; flex-wrap:nowrap; gap:4px; overflow-x:auto; margin:4px 0; padding-bottom:2px; font-family: inherit; }
.gorder span { flex:0 0 auto; white-space:nowrap; font-size:.82em; line-height:1.2; padding:4px 7px; border:1px solid rgba(0,0,0,.18); border-radius:6px; background:#fff; color:var(--ink, #1b1b1b); }
.walk { margin-top:14px; padding:14px 16px; border-radius:10px; background:rgba(47,107,58,.07); border:1px solid rgba(47,107,58,.25); }
.walk-h { font-weight:700; margin-bottom:6px; }
.walk-steps { margin:0; padding-left:20px; }
.walk-steps li { margin:8px 0; }
.walk-steps li b { display:block; }
@media (max-width: 480px) { .gorder { gap:1px; } .gorder span { font-size:.7em; padding:2px 2px; border-color:rgba(0,0,0,.12); letter-spacing:-.02em; } }