:root{
 --bg:#F1F9F8;--surface:#FFFFFF;--text:#1A1D21;--muted:#4A5260;--line:#D9DCE1;
 --primary:#08707A;--on-primary:#FFFFFF;--primary-soft:#DDF3F3;
 --ok:#1E6B3A;--ok-soft:#E5F3EA;--warn:#8A4B00;--warn-soft:#FFF2DE;--err:#A3271F;--err-soft:#FCE9E7;
 --r:16px;--s1:4px;--s2:8px;--s3:12px;--s4:16px;--s5:24px;--s6:32px;
 --sat:env(safe-area-inset-top,0px);--sab:env(safe-area-inset-bottom,0px);
 --sal:env(safe-area-inset-left,0px);--sar:env(safe-area-inset-right,0px);
 --fs:clamp(17px,4.6vw,19px);
 color-scheme:light dark;
}
@media (prefers-color-scheme:dark){:root{
 --bg:#0E1718;--surface:#1B1E23;--text:#F1F2F4;--muted:#B4BAC4;--line:#343941;
 --primary:#5FD6E0;--on-primary:#062326;--primary-soft:#12302F;
 --ok:#7FD39A;--ok-soft:#16291D;--warn:#F2B866;--warn-soft:#2E2213;--err:#F29A92;--err-soft:#331A18;}}
html.sim-notch{--sat:47px;--sab:34px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);
 font:400 var(--fs)/1.5 -apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
 -webkit-tap-highlight-color:transparent;overflow-wrap:anywhere}
.screen{display:none;min-height:100dvh;flex-direction:column;
 padding:calc(var(--sat) + var(--s3)) calc(var(--sar) + var(--s5)) calc(var(--sab) + var(--s4)) calc(var(--sal) + var(--s5))}
.screen.active{display:flex}
.top{display:flex;align-items:center;gap:var(--s2);min-height:44px;margin-bottom:var(--s3)}
.top .title{font-weight:600;flex:1;font-size:17px}
.iconbtn{min-width:44px;min-height:44px;border:0;background:transparent;color:var(--text);font-size:22px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;text-decoration:none}
.progress{display:flex;gap:6px;flex:1}
.progress i{flex:1;height:6px;border-radius:3px;background:var(--line)}
.progress i.on{background:var(--primary)}
h1{font-size:clamp(26px,7vw,30px);line-height:1.2;margin:var(--s2) 0 var(--s3);letter-spacing:-.01em}
h2{font-size:21px;line-height:1.3;margin:var(--s4) 0 var(--s2)}
p{margin:0 0 var(--s3)}
.muted{color:var(--muted)}
.small{font-size:15px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:var(--s4);margin-bottom:var(--s3)}
.tag{display:inline-block;font-size:15px;font-weight:600;padding:2px 10px;border-radius:999px;background:var(--primary-soft);color:var(--primary)}
.btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;min-height:52px;padding:12px 20px;border-radius:14px;border:2px solid transparent;font-family:inherit;font-weight:600;font-size:18px;line-height:1.3;text-decoration:none;cursor:pointer}
.btn.primary{background:var(--primary);color:var(--on-primary)}
.btn.secondary{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn.ghost{background:transparent;color:var(--text);min-height:48px}
.btn:focus-visible,.iconbtn:focus-visible,.opt:focus-visible{outline:3px solid var(--primary);outline-offset:2px}
.btn:active{transform:scale(.98)}
.spacer{flex:1}
.bottom{position:sticky;bottom:0;padding-top:var(--s3);background:linear-gradient(transparent,var(--bg) 12px);display:grid;gap:var(--s2)}
.row{display:flex;gap:var(--s2)}.row>*{flex:1}
.listen{min-height:44px;display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:999px;padding:8px 16px;font-family:inherit;font-weight:600;font-size:16px;line-height:1.3}
.src{font-size:15px;color:var(--muted);border-top:1px solid var(--line);padding-top:var(--s2);margin-top:var(--s3)}
.src a{color:var(--primary);min-height:44px;display:inline-flex;align-items:center}
.opt{display:block;width:100%;text-align:left;min-height:56px;padding:14px 16px;margin-bottom:var(--s2);border-radius:14px;border:2px solid var(--line);background:var(--surface);color:var(--text);font-family:inherit;font-weight:500;font-size:18px;line-height:1.3}
.opt.right{border-color:var(--ok);background:var(--ok-soft)}
.opt.wrong{border-color:var(--err);background:var(--err-soft)}
.fb{display:none;padding:var(--s3) var(--s4);border-radius:14px;margin-bottom:var(--s3)}
.fb.show{display:block}.fb.ok{background:var(--ok-soft);color:var(--text);border-left:5px solid var(--ok)}.fb.no{background:var(--err-soft);border-left:5px solid var(--err)}
.trust{background:var(--warn-soft);border-left:5px solid var(--warn);border-radius:12px;padding:var(--s3) var(--s4);font-size:16px}
.step{display:flex;gap:var(--s3);align-items:flex-start;margin-bottom:var(--s4)}
.step b.n{flex:0 0 36px;height:36px;border-radius:50%;background:var(--primary);color:var(--on-primary);display:flex;align-items:center;justify-content:center}
.big{font-size:24px;font-weight:700;letter-spacing:.02em}
.streak{display:flex;gap:6px}.streak span{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:15px;background:var(--line)}.streak span.on{background:var(--ok);color:var(--surface)}
.seg{display:flex;border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-bottom:var(--s4)}
.seg button{flex:1;min-height:44px;border:0;background:var(--surface);color:var(--text);font-family:inherit;font-weight:600;font-size:16px;line-height:1.3}
.seg button[aria-pressed=true]{background:var(--primary);color:var(--on-primary)}
.ios,.and{display:none}.ios.on,.and.on{display:block}
.tabbar{display:flex;border-top:1px solid var(--line);margin:var(--s4) calc(-1*var(--s5)) 0;padding:0 var(--s2)}
.tabbar a{flex:1;min-height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:15px;color:var(--muted);text-decoration:none}
.tabbar a.on{color:var(--primary);font-weight:600}
.sheet{position:fixed;inset:auto 0 0 0;background:var(--surface);border-radius:20px 20px 0 0;padding:var(--s5) var(--s5) calc(var(--sab) + var(--s4));box-shadow:0 -8px 30px rgba(0,0,0,.2);display:none}
.sheet.show{display:block}
@media (prefers-reduced-motion:no-preference){.screen.active{animation:in .2s ease-out}@keyframes in{from{opacity:0;transform:translateY(6px)}}}
.tag,.listen{align-self:flex-start}
.step{margin-bottom:var(--s2)}.step p{margin:4px 0 0}
.iconbtn{font-size:28px}
.bottom{box-shadow:0 -1px 0 var(--line);background:var(--bg);margin:0 calc(-1*var(--s5));padding:var(--s3) var(--s5) 0}
/* --- live build additions --- */
html.big{--fs:21px}
a{color:var(--primary)}
.cardlink{display:flex;align-items:center;gap:12px;color:inherit;text-decoration:none;min-height:56px}
.cardlink .grow{flex:1}
.badge{font-size:15px;font-weight:600;color:var(--ok);white-space:nowrap}
.sheet{z-index:10;max-width:640px;margin:0 auto}
.sheet h2{margin-top:0}
.backdrop{position:fixed;inset:0;background:rgba(0,0,0,.4);display:none;z-index:9}
.backdrop.show{display:block}
.price{display:flex;align-items:center;gap:12px;min-height:72px;padding:12px 16px;border:2px solid var(--line);border-radius:14px;background:var(--surface);margin-bottom:var(--s2);cursor:pointer}
.price input{width:24px;height:24px;accent-color:var(--primary);flex:0 0 24px;margin:0}
.price .grow{flex:1}.price .amt{font-weight:700;white-space:nowrap}
.price:has(input:checked){border-color:var(--primary);background:var(--primary-soft)}
.ph{display:inline-block;font-size:15px;font-weight:600;padding:2px 10px;border-radius:999px;background:var(--warn-soft);color:var(--warn);border:1px solid var(--warn)}
.chat{display:flex;flex-direction:column;gap:8px;margin:var(--s3) 0}
.bubble{max-width:88%;padding:10px 14px;border-radius:16px;background:var(--surface);border:1px solid var(--line)}
.bubble.me{align-self:flex-end;background:var(--primary-soft)}
.bubble .who{display:block;font-size:15px;font-weight:600;color:var(--muted)}
.chatin{display:flex;gap:8px}
.chatin textarea{flex:1;min-height:52px;font:inherit;font-size:max(17px,var(--fs));padding:12px;border-radius:14px;border:2px solid var(--line);background:var(--surface);color:var(--text);resize:vertical}
.chatin .btn{width:auto}
.counter{font-size:15px;color:var(--muted);margin:6px 0 0}
.status{padding:var(--s3) var(--s4);border-radius:12px;background:var(--primary-soft);margin:var(--s2) 0}
.fb:focus{outline:none}
[hidden]{display:none!important}
.trust{margin-bottom:var(--s3)}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.btn:active{transform:none}}
@media (orientation:landscape) and (max-height:500px){.bottom{position:static}}
h1[tabindex="-1"]:focus{outline:none}
/* --- rustige startpagina --- */
.calm h1{font-size:clamp(28px,8vw,34px)}
.topics{display:flex;flex-direction:column;gap:12px;margin-top:8px}
.topic,.hero{display:flex;align-items:center;gap:14px;min-height:76px;padding:16px 18px;border-radius:18px;background:var(--surface);border:2px solid var(--line);color:var(--text);text-decoration:none}
.topic:active,.hero:active{transform:scale(.99)}
.topic:focus-visible,.hero:focus-visible,.link:focus-visible{outline:3px solid var(--primary);outline-offset:2px}
.topic .ti{font-size:26px;width:44px;height:44px;border-radius:12px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;flex:none}
.topic .tl{display:block;font-weight:700;font-size:1.1em;line-height:1.25}
.topic .ts{display:block;color:var(--muted);font-size:.9em;line-height:1.35}
.topic .go,.hero-go{font-size:28px;color:var(--primary);flex:none}
.topic.alt{border-style:dashed}
.grow{flex:1;min-width:0}
.hero{background:var(--primary);border-color:var(--primary);color:var(--on-primary);flex-wrap:wrap;margin:8px 0 16px}
.hero-k{width:100%;font-size:.9em;font-weight:600;opacity:.95}
.hero-t{flex:1;font-weight:700;font-size:1.1em;line-height:1.3}
.hero .hero-go{color:var(--on-primary)}
.foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:4px 8px;margin-top:20px;color:var(--muted)}
.foot .btn{margin-bottom:8px}
.link{background:none;border:0;padding:12px 6px;min-height:44px;color:var(--primary);text-decoration:underline;font:inherit;cursor:pointer}
.link.small{font-size:16px}
.textsize{min-height:44px;padding:8px 14px;border-radius:12px;border:2px solid var(--primary);background:transparent;color:var(--primary);font:inherit;font-weight:700;font-size:16px;cursor:pointer}
.textsize[aria-pressed="true"]{background:var(--primary);color:var(--on-primary)}
html.big .small,html.big .link.small,html.big .textsize,html.big .tag{font-size:19px}
html.big .top .title{font-size:19px}
.stats-strip{display:flex;flex-wrap:wrap;gap:6px 14px;padding:10px 14px;min-height:48px;align-items:center;border-radius:14px;background:var(--primary-soft);color:var(--text);text-decoration:none;font-weight:600;margin-bottom:8px}
.medal{display:block;font-size:.9em;font-weight:700;color:var(--text);margin-top:2px}
.opt.msg{text-align:left;font-weight:500;border-radius:18px 18px 18px 4px}
.tf .row .btn{min-height:52px}
.tf .btn.right{background:var(--ok-soft);border-color:var(--ok);color:var(--ok)}
.tf .btn.wrong{background:var(--err-soft);border-color:var(--err);color:var(--err)}
.tf.isok{border-color:var(--ok)}.tf.isno{border-color:var(--err)}
.tfb{margin:10px 0 0}.tfb:empty{display:none}
.celebrate{font-size:56px;text-align:center;animation:pop .6s ease-out}
@keyframes pop{0%{transform:scale(.3);opacity:0}70%{transform:scale(1.15)}100%{transform:scale(1);opacity:1}}
@media (prefers-reduced-motion:reduce){.celebrate{animation:none}#toast{transition:none}}
.lvbar{height:12px;border-radius:6px;background:var(--line);overflow:hidden}.lvbar i{display:block;height:100%;background:var(--primary)}
#toast{position:fixed;left:50%;top:calc(var(--sat) + 12px);transform:translate(-50%,-20px);opacity:0;background:var(--text);color:var(--bg);padding:12px 18px;border-radius:999px;font-weight:700;transition:.25s;pointer-events:none;z-index:50;max-width:90vw;text-align:center}
#toast.show{opacity:1;transform:translate(-50%,0)}
.sr-only{position:absolute;left:-9999px}
.top .title.brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800}
.top .title.brand img{border-radius:9px;flex:none}
.seg.lang{display:inline-flex;gap:2px;margin:0}
.top .seg.lang button{min-width:44px;min-height:44px;padding:0 6px;font-size:15px}
.nlnote{background:var(--warn-soft);color:var(--text);padding:8px 12px;border-radius:10px}
/* tegels */
.tiles{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:8px 0 12px}
.tile{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;min-height:116px;padding:14px 8px;border-radius:18px;background:var(--surface);border:2px solid var(--line);color:var(--text);text-decoration:none;text-align:center}
.tile:focus-visible,.lesson:focus-visible{outline:3px solid var(--primary);outline-offset:2px}
.tile:active{transform:scale(.98)}
.tile .ti{font-size:30px;width:52px;height:52px;border-radius:14px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center}
.tile .tl{font-weight:800;font-size:1.1em;line-height:1.2}
.tile .medal{margin:0;font-size:.85em}
.lesson{display:flex;align-items:center;gap:12px;min-height:72px;padding:14px 16px;margin-bottom:10px;border-radius:16px;background:var(--surface);border:2px solid var(--line);color:var(--text);text-decoration:none}
.lesson .lnum{width:36px;height:36px;border-radius:50%;background:var(--primary);color:var(--on-primary);font-weight:800;display:flex;align-items:center;justify-content:center;flex:none}
.lesson .lt{display:block;font-weight:700;line-height:1.3}.lesson .ls{display:block;color:var(--muted);font-size:.9em;margin-top:2px}
.lesson .go{font-size:28px;color:var(--primary);flex:none}
.lesson .badge{display:inline;margin:0;padding:0 8px}
.badge.new{background:var(--primary-soft);color:var(--primary)}.badge.busy{background:var(--warn-soft);color:var(--warn)}
.tag-check{background:var(--warn-soft);color:var(--warn)}.tag-bonus{background:var(--ok-soft);color:var(--ok)}
#bonusslot .bonus{margin-top:8px}
.top .title.brand{white-space:nowrap}
.langrow{display:flex;justify-content:flex-end;margin:-4px 0 4px}
.langrow .seg.lang{border:1px solid var(--line);border-radius:12px;overflow:hidden}
.langrow .seg.lang button{min-width:52px;min-height:44px;font-size:16px}
html.big .langrow .seg.lang button{font-size:19px}
.fallback{margin:-4px 0 12px 52px}
.pict{width:40px;height:40px;flex:none;color:var(--primary);fill:currentColor;background:var(--primary-soft);border-radius:10px;padding:4px}
.pict path,.pict rect{fill:none}
.routes{display:grid;grid-template-columns:1fr;gap:12px}
@media (min-width:600px){.routes{grid-template-columns:1fr 1fr}}
.route{border:2px solid var(--line);border-radius:16px;padding:12px}
.route h2{margin-top:0;font-size:18px}
.step .pict{margin-right:2px}
/* v10: les-gamificatie */
.xprow{display:flex;justify-content:space-between;align-items:center;font-weight:700;font-size:.9rem;margin:.25rem 0}
.xp{color:#0b6f78}.combo{background:#FFD23F;color:#222;border-radius:99px;padding:.1rem .6rem}
details.explain{border:1px solid rgba(127,127,127,.25);border-radius:14px;padding:.6rem .9rem;margin-bottom:1rem}
details.explain>summary{cursor:pointer;font-weight:700;min-height:44px;display:flex;align-items:center}
.blank{display:inline-block;min-width:3.5em;border-bottom:3px dashed currentColor;text-align:center}
.mgrid{display:grid;grid-template-columns:1fr 1fr;gap:.5rem}.mbtn,.obtn{min-height:48px;border-radius:12px;border:2px solid rgba(127,127,127,.35);background:transparent;color:inherit;font:inherit;padding:.5rem;text-align:left;cursor:pointer}
.mbtn.sel{border-color:#0FA3B1;background:rgba(15,163,177,.12)}.mbtn.right,.obtn.right{border-color:#1a9c5b;opacity:.6}
#ordered{padding-left:1.4rem;margin:.5rem 0}#ordered li{padding:.3rem 0;font-weight:600}
.obtn{display:block;width:100%;margin:.35rem 0}
.pop{animation:pop .35s ease}.shake{animation:shake .4s ease}
@keyframes pop{50%{transform:scale(1.06)}}@keyframes shake{20%,60%{transform:translateX(-6px)}40%,80%{transform:translateX(6px)}}
.cf{position:fixed;width:8px;height:8px;border-radius:2px;pointer-events:none;z-index:99;animation:cf .9s ease-out forwards}
@keyframes cf{to{transform:translate(var(--dx),var(--dy)) rotate(360deg);opacity:0}}
.levelup{background:linear-gradient(135deg,#FFD23F,#FF7A59);color:#222;border-radius:16px;padding:1rem;text-align:center;font-weight:800;animation:pop .5s ease}
details.srcs{margin-top:1rem;font-size:.85rem}details.srcs summary{cursor:pointer;min-height:44px;display:flex;align-items:center}
.widget{border-radius:14px;background:rgba(15,163,177,.08);padding:.8rem;margin:.8rem 0}.widget label{display:block;font-weight:600}.widget input[type=range]{width:100%;min-height:44px}
.widget output{display:block;font-weight:700;margin:.3rem 0}.pigrow{display:flex;align-items:center;gap:.6rem}.pig{font-size:2rem;transition:transform .2s}
.track{flex:1;height:14px;border-radius:99px;background:rgba(127,127,127,.25);overflow:hidden}.fill{height:100%;background:#1a9c5b;transition:width .2s}
.nhgmsg{font-weight:700;margin:.3rem 0 0}.nhgmsg.ok{color:#137a45}.nhgmsg.mid{color:#8a5a00}.nhgmsg.no{color:#b3261e}
.goalbar{display:flex;align-items:center;gap:.8rem;text-decoration:none;color:inherit;border:1px solid rgba(127,127,127,.25);border-radius:16px;padding:.5rem .8rem;margin:.6rem 0}
.ring{width:52px;height:52px;flex:none}.rbg{fill:none;stroke:rgba(127,127,127,.25);stroke-width:6}.rfg{fill:none;stroke:#FF7A59;stroke-width:6;stroke-linecap:round;transform:rotate(-90deg);transform-origin:center;transition:stroke-dashoffset .6s}
.ring text{font-weight:800;font-size:13px;fill:currentColor}.gtxt{display:flex;flex-direction:column}.gtxt span{font-size:.85rem}
.lesson.rec{border-color:#FF7A59;border-width:2px}.reck{color:#b5451b;font-weight:700}.lvlline{margin:.2rem 0 1rem}.lvlpick.on{border-color:#0FA3B1}
@media (prefers-reduced-motion:reduce){.pop,.shake,.levelup,.cf{animation:none!important}.fill,.pig,.rfg{transition:none}}
@media (prefers-color-scheme:dark){.xp{color:#5fd6e0}}

/* v11 */
body{background:radial-gradient(120% 60% at 100% 0,#E0F4F2 0,transparent 60%),radial-gradient(90% 50% at 0 100%,#FFF4E2 0,transparent 60%),var(--bg);background-attachment:fixed}
@media (prefers-color-scheme:dark){body{background:radial-gradient(120% 60% at 100% 0,#12302F 0,transparent 60%),var(--bg)}}
.topbtns{display:flex;gap:6px;margin-left:auto}
#gear{display:inline-flex;align-items:center;justify-content:center;background:transparent;border:0;color:var(--text);cursor:pointer}
dialog.sheet{border:0;border-radius:24px 24px 0 0;margin:auto auto 0;width:100%;max-width:520px;padding:24px 24px calc(24px + var(--sab));background:var(--surface);color:var(--text);box-shadow:0 -8px 30px rgba(0,0,0,.2)}
dialog.sheet::backdrop{background:rgba(10,30,32,.45)}
dialog.sheet h2{margin:0 0 8px}dialog.sheet h3{margin:18px 0 8px;font-size:1em}dialog.sheet .btn{width:100%;margin-top:22px}
.segb{min-height:48px;min-width:96px}.segb.big{font-size:1.2em}
h1.display{font-family:ui-rounded,"SF Pro Rounded","Nunito","Quicksand","Arial Rounded MT Bold",system-ui,sans-serif;font-weight:900;font-size:clamp(2rem,8.5vw,2.6rem);line-height:1.08;letter-spacing:-.02em;margin:10px 0 6px}
h1.display .hl{background:linear-gradient(transparent 58%,#9FE6E0 58%,#9FE6E0 92%,transparent 92%);padding:0 .08em;border-radius:4px}
@media (prefers-color-scheme:dark){h1.display .hl{background:linear-gradient(transparent 60%,#0F5D63 60%,#0F5D63 92%,transparent 92%)}}
.subline{color:var(--muted);font-size:1.05em;margin:0 0 12px}
.tile{border-color:transparent}
.tint-geld{background:#FFF3D6}.tint-ai{background:#ECE6FF}.tint-oplichting{background:#FFE5E0}.tint-wonen{background:#DFF5EC}.tint-gezondheid{background:#FFE4EF}.tint-werken{background:#E2EEFF}
.tile[class*=tint-] .ti{background:rgba(255,255,255,.7);color:#1A1D21}
@media (prefers-color-scheme:dark){.tint-geld{background:#3A2F14}.tint-ai{background:#2A2342}.tint-oplichting{background:#3D2320}.tint-wonen{background:#173229}.tint-gezondheid{background:#3A1E2B}.tint-werken{background:#1B2A40}.tile[class*=tint-] .ti{background:rgba(0,0,0,.25);color:#F1F2F4}}
.xprow{min-height:28px;gap:8px}.xpflash{flex:1;text-align:center;font-size:.85rem;color:var(--ok);opacity:0}.xpflash.on{animation:xpf 2.2s ease forwards}
@keyframes xpf{10%,75%{opacity:1}100%{opacity:0}}
@media (prefers-reduced-motion:reduce){.xpflash.on{animation:none;opacity:1}}
/* ===== v11 design system: typography + hierarchy ===== */
@font-face{font-family:"Nunito";src:url(/fonts/nunito.woff2) format("woff2");font-weight:400 900;font-display:swap}
:root{--font:"Nunito",ui-rounded,system-ui,-apple-system,sans-serif;--sh1:0 1px 2px rgba(8,60,64,.06),0 4px 14px rgba(8,60,64,.07);--sh2:0 2px 4px rgba(8,60,64,.06),0 10px 28px rgba(8,60,64,.10);--line:#D6E6E5}
@media (prefers-color-scheme:dark){:root{--sh1:0 1px 2px rgba(0,0,0,.4),0 4px 14px rgba(0,0,0,.3);--sh2:0 2px 4px rgba(0,0,0,.4),0 10px 28px rgba(0,0,0,.35);--line:#2A3A3B}}
body{font:500 var(--fs)/1.55 var(--font);letter-spacing:.005em;-webkit-font-smoothing:antialiased}
button,input{font-family:var(--font)}
.screen{padding-left:calc(var(--sal) + 20px);padding-right:calc(var(--sar) + 20px);gap:0}
/* type scale: display 36/40, title 28, subtitle 20, body 17-19, caption 14 */
h1{font-family:var(--font);font-weight:850;font-size:clamp(26px,7.2vw,30px);line-height:1.18;letter-spacing:-.015em;margin:8px 0 16px}
h1.display{font-weight:900;font-size:clamp(34px,9.6vw,40px);line-height:1.06;margin:16px 0 8px}
h2{font-weight:800;font-size:20px;line-height:1.3;margin:24px 0 8px}
h3{font-weight:800;font-size:17px;line-height:1.3}
.small,.muted.small{font-size:14px;line-height:1.45}
b,strong{font-weight:800}
.top{min-height:48px;margin-bottom:8px}
.top .title{font-weight:800;font-size:18px}
.brand{display:flex;align-items:center;gap:8px;font-weight:900!important;font-size:22px!important;letter-spacing:-.01em}
.tag{font-size:13px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;padding:4px 12px;margin-bottom:8px}
.card,.stats{border:0;border-radius:20px;box-shadow:var(--sh1);padding:16px 18px}
.btn{border-radius:16px;font-weight:800;font-size:18px;min-height:56px;letter-spacing:.01em}
.btn.primary{box-shadow:0 4px 0 #05555D,var(--sh1)}.btn.primary:active{transform:translateY(2px);box-shadow:0 2px 0 #05555D}
@media (prefers-color-scheme:dark){.btn.primary{box-shadow:0 4px 0 #2B9AA3}}
.btn.secondary{border-width:2px;background:var(--surface)}
.bottom{background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:0 -1px 0 var(--line);margin:16px -20px 0;padding:12px 20px calc(4px + var(--sab));margin-top:auto}
.progress i{height:10px;border-radius:99px}.progress i.on{background:linear-gradient(90deg,#0FA3B1,#08707A)}
.opt{border:2px solid var(--line);border-bottom-width:4px;border-radius:16px;font-weight:700;box-shadow:none;padding:14px 18px;margin-bottom:10px}
.opt:active{transform:translateY(2px)}
.fb{border-radius:16px;padding:14px 16px;box-shadow:var(--sh1)}
/* lesson text: short styled chunks */
.chunks{display:grid;gap:12px;margin-bottom:16px}
.chunks>p{position:relative;margin:0;background:var(--surface);border-radius:18px;padding:14px 16px 14px 52px;box-shadow:var(--sh1);line-height:1.5}
.chunks>p::before{content:"💡";position:absolute;left:14px;top:13px;width:28px;height:28px;border-radius:10px;background:var(--primary-soft);display:flex;align-items:center;justify-content:center;font-size:16px}
.chunks>p:nth-of-type(2)::before{content:"👉"}.chunks>p:nth-of-type(3)::before{content:"✅"}.chunks>p:nth-of-type(4)::before{content:"⭐"}
.chunks>p:first-child{background:transparent;box-shadow:none;padding:0;font-size:1.08em;font-weight:600}
.chunks>p:first-child::before{display:none}
.chunks b,.chunks strong{background:linear-gradient(transparent 55%,#BDEDEA 55%);padding:0 2px;border-radius:3px}
@media (prefers-color-scheme:dark){.chunks b,.chunks strong{background:linear-gradient(transparent 55%,#0F5D63 55%)}}
.chunks .card{margin:0;background:var(--primary-soft);box-shadow:none}
.chunks .card p{margin:0 0 6px}
.chunks .widget,.chunks ul,.chunks ol{margin:0}
.chunks ul{list-style:none;padding:0;display:grid;gap:8px}.chunks li{background:var(--surface);border-radius:14px;padding:10px 14px;box-shadow:var(--sh1)}
details.explain{background:var(--surface);border:0;box-shadow:var(--sh1);border-radius:18px}
details.explain .chunks>p{box-shadow:none;background:var(--bg)}
/* home */
.tiles{gap:14px;margin:16px 0}
.tile{border-radius:22px;min-height:128px;box-shadow:var(--sh1);border:0}
.tile .ti{width:56px;height:56px;border-radius:18px;font-size:30px}
.tile .tl{font-size:17px;font-weight:850}
.goalbar{background:var(--surface);border:0;box-shadow:var(--sh1);border-radius:20px;padding:12px 16px;margin:16px 0 8px}
.topic,.lesson{background:var(--surface);border:0!important;box-shadow:var(--sh1);border-radius:20px}
.lesson.rec{box-shadow:0 0 0 2px #FF7A59,var(--sh2)}
.lnum{font-weight:900}
.subline{font-size:17px;line-height:1.45;margin:0 0 8px;font-weight:600}
/* settings sheet */
dialog.sheet{border-radius:28px 28px 0 0;padding-top:12px}
dialog.sheet::before{content:"";display:block;width:40px;height:5px;border-radius:9px;background:var(--line);margin:0 auto 16px}
dialog.sheet h2{font-size:24px;font-weight:900}
dialog.sheet h3{font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:24px 0 8px}
.seg{border:0;background:var(--bg);border-radius:16px;padding:4px;gap:4px;box-shadow:inset 0 0 0 1px var(--line)}
.seg button{border-radius:12px;font-weight:800;min-height:48px;background:transparent}
.seg button[aria-pressed=true]{box-shadow:var(--sh1)}
.trust{border-left:0;border-radius:18px;box-shadow:var(--sh1)}
.step{background:var(--surface);border-radius:18px;padding:14px;box-shadow:var(--sh1);margin-bottom:12px}
.celebrate{font-size:64px;text-align:center;margin-top:16px}
dialog.sheet[open]{display:block;position:fixed;inset:auto 0 0 0}
.seg button{min-width:64px;white-space:nowrap;padding:0 14px}