/* Tokanny Faith Foundation · Learning Hub */
:root{
  color-scheme:light;
  --bg:#F5F8FB; --bg-alt:#E7F1F9; --surface:#FFFFFF; --surface-2:#EEF4F9;
  --heading:#0B1830; --text:#1D2C42; --muted:#55657B; --line:#D5E0EA; --line-strong:#B4C5D6;
  --link:#0665A2; --sky:#12A7E3; --sky-soft:#D6EEFA; --gold:#F4A916; --gold-hover:#FFBA33; --on-gold:#0F1E36;
  --gold-soft:#FDF0D3; --band:#0F1E36; --on-band:#EEF4FA; --on-band-muted:#A9BACE;
  --ok:#0B7A4B; --ok-soft:#DDF4E8; --danger:#B42318; --danger-soft:#FDE7E4;
  --shadow:0 1px 2px rgba(15,30,54,.05),0 14px 34px -18px rgba(15,30,54,.28);
  --logo-light:block; --logo-dark:none;
  --f-display:'Bricolage Grotesque',ui-sans-serif,system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
  --f-body:'Literata',Georgia,'Times New Roman',serif;
  --gutter:clamp(16px,4vw,40px); --r:14px; --header-h:72px;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    color-scheme:dark;
    --bg:#08121F; --bg-alt:#0C1A2C; --surface:#0F1F34; --surface-2:#14263F;
    --heading:#F1F6FB; --text:#D2DDE9; --muted:#98AABF; --line:#1D304B; --line-strong:#2E4769;
    --link:#6ACDF6; --sky:#2DB9EE; --sky-soft:#10304B; --gold:#F5B63C; --gold-hover:#FFC65C; --gold-soft:#3A3117;
    --band:#11243F; --ok:#5BD69B; --ok-soft:#12392B; --danger:#FF8F80; --danger-soft:#43211F;
    --shadow:0 18px 40px -20px rgba(0,0,0,.75); --logo-light:none; --logo-dark:block;
  }
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#08121F; --bg-alt:#0C1A2C; --surface:#0F1F34; --surface-2:#14263F;
  --heading:#F1F6FB; --text:#D2DDE9; --muted:#98AABF; --line:#1D304B; --line-strong:#2E4769;
  --link:#6ACDF6; --sky:#2DB9EE; --sky-soft:#10304B; --gold:#F5B63C; --gold-hover:#FFC65C; --gold-soft:#3A3117;
  --band:#11243F; --ok:#5BD69B; --ok-soft:#12392B; --danger:#FF8F80; --danger-soft:#43211F;
  --shadow:0 18px 40px -20px rgba(0,0,0,.75); --logo-light:none; --logo-dark:block;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--header-h) + 16px)}
body{margin:0;background:var(--bg);color:var(--text);font:400 1.0625rem/1.65 var(--f-body);-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:var(--f-display);color:var(--heading);margin:0;letter-spacing:-.02em;line-height:1.1}
p{margin:0}
a{color:var(--link);text-underline-offset:.15em}
img,video{max-width:100%;display:block}
button,input,textarea,select{font:inherit;color:inherit}
svg.i{width:1.2em;height:1.2em;flex:none;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
:focus-visible{outline:3px solid var(--sky);outline-offset:3px;border-radius:6px}
[hidden]{display:none!important}
.vh{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap}
.skip{position:absolute;left:12px;top:-60px;z-index:100;background:var(--heading);color:var(--bg);padding:10px 16px;border-radius:8px;font:600 .94rem/1 var(--f-display);text-decoration:none}
.skip:focus{top:12px}
.wrap{width:100%;max-width:1200px;margin-inline:auto;padding-inline:var(--gutter)}
.logo-on-light{display:var(--logo-light)} .logo-on-dark{display:var(--logo-dark)}

/* buttons */
.btn{--h:48px;display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:var(--h);padding:0 22px;border-radius:999px;border:1.5px solid transparent;
  font:640 1rem/1.1 var(--f-display);text-decoration:none;cursor:pointer;background:none;color:var(--heading);transition:background-color .2s,border-color .2s,transform .15s;text-align:center}
.btn:active{transform:translateY(1px)}
.btn-gold{background:var(--gold);color:var(--on-gold)} .btn-gold:hover{background:var(--gold-hover)}
.btn-solid{background:var(--heading);color:var(--bg)} .btn-solid:hover{background:var(--link)}
.btn-line{border-color:var(--line-strong)} .btn-line:hover{border-color:var(--heading);background:var(--surface)}
.btn-sm{--h:40px;padding:0 16px;font-size:.94rem}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.linklike{background:none;border:0;padding:0;color:var(--link);font:600 .97rem/1.3 var(--f-display);text-decoration:underline;cursor:pointer}

/* header */
.lh-header{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 90%,transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.lh-header .row{display:flex;align-items:center;gap:16px;height:var(--header-h)}
.lh-brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex:none}
.lh-brand img{height:44px;width:auto}
.lh-brand.tag,.lh-brand .tag{font:700 .78rem/1 var(--f-display);letter-spacing:.12em;text-transform:uppercase;color:var(--link);border-left:1.5px solid var(--line-strong);padding-left:12px;height:28px;align-items:center}
.lh-nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.lh-nav a{padding:9px 12px;border-radius:999px;font:560 .95rem/1 var(--f-display);color:var(--heading);text-decoration:none;display:inline-flex;align-items:center;gap:7px}
.lh-nav a:hover{background:var(--surface-2)}
.lh-nav a[aria-current="page"]{background:var(--surface-2)}
.lh-nav .streak{display:inline-flex;align-items:center;gap:4px;font:700 .82rem/1 var(--f-display);color:var(--on-gold);background:var(--gold);border-radius:999px;padding:4px 8px}
@media (max-width:720px){.lh-nav .hide-sm{display:none}.lh-brand.tag{display:none}.lh-brand img{height:38px}.lh-nav a{padding:9px 9px}}

/* type */
.eyebrow{display:inline-flex;align-items:center;gap:10px;font:650 .8rem/1.2 var(--f-display);letter-spacing:.12em;text-transform:uppercase;color:var(--link);margin-bottom:14px}
.eyebrow::before{content:"";width:13px;height:13px;flex:none;background:linear-gradient(90deg,var(--gold) 0 5px,transparent 5px 7px,var(--heading) 7px 13px)}
.lede{font-size:clamp(1.06rem,.98rem + .38vw,1.25rem);color:var(--text);max-width:60ch}
.muted{color:var(--muted)}
.small{font-size:.92rem}

/* hub hero */
.hub-hero{padding-block:clamp(40px,6vw,80px) clamp(28px,4vw,48px)}
.hub-hero h1{font-size:clamp(2.4rem,1.5rem + 3.6vw,4.4rem);font-weight:790;letter-spacing:-.035em;max-width:16ch}
.hub-hero .lede{margin-top:18px}
.hub-hero .actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hub-hero .note{margin-top:16px;display:flex;align-items:center;gap:8px;font:500 .93rem/1.4 var(--f-display);color:var(--muted)}
.section{padding-block:clamp(36px,5vw,64px)}
.section h2{font-size:clamp(1.6rem,1.2rem + 1.5vw,2.4rem);font-weight:770}
.section .head{margin-bottom:24px;max-width:720px}
.section .head p{margin-top:10px;color:var(--muted)}
.band-alt{background:var(--bg-alt)}

/* course cards */
.course-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,420px),1fr));gap:20px}
.course-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:26px;display:flex;flex-direction:column;gap:14px;box-shadow:var(--shadow)}
.course-card .ci{width:58px;height:58px;border-radius:16px;display:grid;place-items:center;background:var(--sky-soft);color:var(--link)}
.course-card.gold .ci{background:var(--gold-soft);color:#9A6200}
:root[data-theme="dark"] .course-card.gold .ci{color:var(--gold)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .course-card.gold .ci{color:var(--gold)}}
.course-card .ci .i{width:30px;height:30px}
.course-card h3{font-size:1.65rem;font-weight:760}
.course-card h3 a{color:inherit;text-decoration:none}
.course-card h3 a::after{content:"";position:absolute;inset:0;border-radius:20px}
.course-card .stats{display:flex;flex-wrap:wrap;gap:8px 18px;font:560 .9rem/1.2 var(--f-display);color:var(--muted)}
.course-card .stats span{display:inline-flex;align-items:center;gap:6px}
.course-card .cta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px}
.course-card .go{font:650 1rem/1 var(--f-display);color:var(--link);display:inline-flex;align-items:center;gap:8px}
.bar{height:10px;border-radius:999px;background:var(--surface-2);overflow:hidden;border:1px solid var(--line)}
.bar > i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--sky),var(--ok));border-radius:999px;transition:width .5s}
.pct{font:700 .9rem/1 var(--f-display);color:var(--heading);white-space:nowrap}

/* continue card */
.continue{display:flex;align-items:center;gap:18px;background:var(--band);color:var(--on-band);border-radius:20px;padding:20px 22px;text-decoration:none;margin-top:8px}
.continue .ci{width:52px;height:52px;border-radius:50%;background:var(--gold);color:var(--on-gold);display:grid;place-items:center;flex:none}
.continue small{display:block;font:650 .78rem/1 var(--f-display);letter-spacing:.1em;text-transform:uppercase;color:var(--gold);margin-bottom:6px}
.continue b{font:700 1.15rem/1.25 var(--f-display);color:var(--on-band)}
.continue span.c{display:block;color:var(--on-band-muted);font-size:.92rem;margin-top:2px}
.continue .arr{margin-left:auto;color:var(--gold)}

/* how it works */
.how{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:16px}
.how > div{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:20px}
.how .n{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:var(--sky-soft);color:var(--link);margin-bottom:12px}
.how h3{font-size:1.15rem;font-weight:720;margin-bottom:6px}
.how p{color:var(--muted);font-size:.97rem}

/* faq */
.faq{display:grid;gap:10px;max-width:820px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:4px 18px}
.faq summary{cursor:pointer;font:650 1.05rem/1.35 var(--f-display);color:var(--heading);padding:14px 0;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-weight:500;color:var(--link)}
.faq details[open] summary::after{content:"−"}
.faq details p{padding:0 0 16px;color:var(--text)}

/* course page */
.course-head{padding-block:clamp(32px,5vw,64px) 28px}
.crumbs{display:flex;flex-wrap:wrap;gap:6px;font:560 .9rem/1.3 var(--f-display);color:var(--muted);margin-bottom:16px}
.crumbs a{color:var(--muted);text-decoration:none} .crumbs a:hover{color:var(--link);text-decoration:underline}
.crumbs span::before{content:"›";margin-right:6px;color:var(--line-strong)}
.course-head h1{font-size:clamp(2.2rem,1.4rem + 3vw,3.8rem);font-weight:790;letter-spacing:-.035em}
.course-head .lede{margin-top:14px}
.course-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.chip{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:7px 13px;font:560 .9rem/1 var(--f-display);color:var(--heading)}
.progress-box{margin-top:24px;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:18px 20px;display:flex;flex-direction:column;gap:14px;max-width:760px}
.progress-box .pb-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 16px}
.progress-box b{font:700 1.05rem/1.2 var(--f-display);color:var(--heading)}
.units{display:grid;gap:18px;padding-bottom:20px}
.unit{background:var(--surface);border:1px solid var(--line);border-radius:20px;overflow:hidden}
.unit-top{display:flex;gap:16px;align-items:flex-start;padding:20px 22px;border-bottom:1px solid var(--line)}
.unit-num{width:48px;height:48px;border-radius:14px;flex:none;display:grid;place-items:center;background:var(--band);color:var(--on-band);font:780 1.25rem/1 var(--f-display)}
.unit-top h2{font-size:1.35rem;font-weight:740}
.unit-top p{color:var(--muted);font-size:.95rem;margin-top:4px}
.unit-top .upct{margin-left:auto;text-align:right;font:650 .88rem/1.3 var(--f-display);color:var(--muted);white-space:nowrap}
.unit-top .badge-earned{display:inline-flex;align-items:center;gap:6px;color:#9A6200;background:var(--gold-soft);border-radius:999px;padding:4px 10px;font:700 .8rem/1 var(--f-display)}
@media (max-width:600px){.unit-top{display:grid;grid-template-columns:48px minmax(0,1fr);gap:10px 14px;align-items:center}.unit-top > div:not(.upct){display:contents}.unit-top p,.unit-top .upct{grid-column:1/-1}.unit-top p{margin-top:0}.unit-top .upct{margin-left:0;text-align:left;white-space:normal}.unit-top .upct br{display:none}.unit-top .upct .badge-earned{margin-left:8px}}
.lessons{list-style:none;margin:0;padding:6px 0}
.lessons li a,.lessons li .row{display:flex;align-items:center;gap:14px;padding:11px 22px;text-decoration:none;color:var(--heading)}
.lessons li a:hover{background:var(--surface-2)}
.lessons .t{font:560 1rem/1.3 var(--f-display)}
.lessons .d{margin-left:auto;font:500 .85rem/1 var(--f-display);color:var(--muted);white-space:nowrap}
.lessons li.test a{border-top:1px dashed var(--line);margin-top:4px}
.lessons li.test .t{font-weight:700}

/* mastery icons */
.mi{width:26px;height:26px;flex:none;border-radius:50%;display:grid;place-items:center;border:2px solid var(--line-strong);color:transparent}
.mi .i{width:15px;height:15px}
.mi.s1{border-color:var(--sky);background:radial-gradient(circle,var(--sky) 0 4px,transparent 5px)}
.mi.s2{border-color:var(--sky);background:var(--sky);color:#fff}
.mi.s3{border-color:var(--gold);background:var(--gold);color:var(--on-gold)}
.mi.test{border-radius:8px}
.legend{display:flex;flex-wrap:wrap;gap:8px 18px;font:500 .88rem/1.2 var(--f-display);color:var(--muted);margin:14px 0 22px}
.legend span{display:inline-flex;align-items:center;gap:8px}
.legend .mi{width:20px;height:20px}

/* lesson page */
.lesson-layout{display:grid;grid-template-columns:290px minmax(0,1fr);gap:36px;padding:28px 0 64px;align-items:start}
@media (max-width:1000px){.lesson-layout{grid-template-columns:1fr;gap:18px;padding-top:16px}}
.side{position:sticky;top:calc(var(--header-h) + 16px);background:var(--surface);border:1px solid var(--line);border-radius:18px;overflow:hidden;max-height:calc(100vh - var(--header-h) - 32px);display:flex;flex-direction:column}
.side .sh{padding:16px 18px;border-bottom:1px solid var(--line)}
.side .sh small{display:block;font:650 .75rem/1 var(--f-display);letter-spacing:.1em;text-transform:uppercase;color:var(--link);margin-bottom:6px}
.side .sh b{font:720 1.08rem/1.25 var(--f-display);color:var(--heading)}
.side ol{list-style:none;margin:0;padding:6px 0;overflow:auto}
.side li a{display:flex;align-items:center;gap:12px;padding:9px 18px;text-decoration:none;color:var(--heading);font:540 .95rem/1.3 var(--f-display)}
.side li a:hover{background:var(--surface-2)}
.side li a[aria-current="page"]{background:var(--sky-soft);font-weight:700}
.side .mi{width:22px;height:22px}
.side .sf{border-top:1px solid var(--line);padding:12px 18px}
@media (max-width:1000px){.side{position:static;max-height:none}.side ol{display:none}.side.open ol{display:block}.side .sh{display:flex;align-items:center;justify-content:space-between;gap:10px;cursor:pointer}.side .sf{display:none}.side.open .sf{display:block}}
.side .toggle{display:none}
@media (max-width:1000px){.side .toggle{display:inline-flex}}
.lesson-main{min-width:0}
.lesson-title{display:flex;flex-direction:column;gap:10px;margin-bottom:18px}
.lesson-title h1{font-size:clamp(1.9rem,1.3rem + 2.2vw,3rem);font-weight:780;letter-spacing:-.03em}
.lesson-title .sum{color:var(--muted);max-width:65ch}
.state-pill{align-self:flex-start;display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:6px 12px 6px 7px;font:650 .86rem/1 var(--f-display);background:var(--surface-2);color:var(--heading);border:1px solid var(--line)}
.state-pill .mi{width:20px;height:20px}
.video-box{position:relative;border-radius:18px;overflow:hidden;background:#0F1E36;aspect-ratio:16/9;box-shadow:var(--shadow)}
.video-box video{width:100%;height:100%;object-fit:contain;background:#0F1E36}
.video-box .no-video{position:absolute;inset:0;display:grid;place-items:center;text-align:center;color:#EEF4FA;padding:24px;font:600 1.05rem/1.4 var(--f-display)}
.video-tools{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;margin-top:12px;font:560 .9rem/1.3 var(--f-display);color:var(--muted)}
.video-tools a{color:var(--link);display:inline-flex;align-items:center;gap:6px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:clamp(18px,3vw,26px);margin-top:22px}
.card > h2{font-size:1.35rem;font-weight:740;display:flex;align-items:center;gap:10px;margin-bottom:6px}
.card > h2 .i{color:var(--link)}
.card > .intro{color:var(--muted);margin-bottom:16px}
.points{list-style:none;margin:10px 0 0;padding:0;display:grid;gap:12px}
.points li{display:flex;gap:12px;align-items:flex-start}
.points li .i{color:var(--ok);margin-top:5px}
.reader{margin-top:10px}
.reader h3{font-size:1.12rem;font-weight:720;margin:20px 0 8px}
.reader p{margin:0 0 12px}
.reader .ln{cursor:pointer;border-radius:4px;transition:background .2s}
.reader .ln:hover{background:var(--surface-2)}
.reader .ln.now{background:var(--gold-soft)}
.reader-toggle{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;background:none;border:0;padding:0;cursor:pointer;text-align:left}
.reader-toggle h2{font-size:1.35rem;font-weight:740;display:flex;align-items:center;gap:10px}
.reader-toggle h2 .i{color:var(--link)}
.reader-toggle .chev{transition:transform .2s;color:var(--muted)}
.reader-toggle[aria-expanded="true"] .chev{transform:rotate(180deg)}
.lesson-nav{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:26px}
.lesson-nav a{display:flex;flex-direction:column;gap:6px;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px 18px;text-decoration:none;color:var(--heading)}
.lesson-nav a:hover{border-color:var(--line-strong)}
.lesson-nav small{font:650 .76rem/1 var(--f-display);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.lesson-nav b{font:680 1.02rem/1.3 var(--f-display)}
.lesson-nav .next{text-align:right;grid-column:2}
.lesson-nav .next.primary{background:var(--band);border-color:var(--band);color:var(--on-band)}
.lesson-nav .next.primary small{color:var(--gold)}
@media (max-width:560px){.lesson-nav{grid-template-columns:1fr}.lesson-nav .next{grid-column:1}}

/* quiz */
.quiz-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.dots{display:flex;gap:6px}
.dots i{width:28px;height:8px;border-radius:999px;background:var(--surface-2);border:1px solid var(--line)}
.dots i.ok{background:var(--ok);border-color:var(--ok)} .dots i.no{background:var(--danger);border-color:var(--danger)} .dots i.cur{background:var(--sky);border-color:var(--sky)}
.q-text{font:680 1.22rem/1.35 var(--f-display);color:var(--heading);margin-bottom:14px}
.opts{display:grid;gap:10px}
.opt{display:flex;align-items:center;gap:12px;width:100%;text-align:left;background:var(--surface);border:1.5px solid var(--line-strong);border-radius:14px;padding:13px 15px;cursor:pointer;font:520 1rem/1.35 var(--f-display);color:var(--heading)}
.opt:hover{border-color:var(--link)}
.opt .k{width:30px;height:30px;border-radius:9px;flex:none;display:grid;place-items:center;background:var(--surface-2);font:700 .85rem/1 var(--f-display);color:var(--muted)}
.opt[aria-pressed="true"]{border-color:var(--link);box-shadow:0 0 0 2px var(--link) inset}
.opt[aria-pressed="true"] .k{background:var(--link);color:#fff}
.opt.right{border-color:var(--ok);background:var(--ok-soft)} .opt.right .k{background:var(--ok);color:#fff}
.opt.wrong{border-color:var(--danger);background:var(--danger-soft)} .opt.wrong .k{background:var(--danger);color:#fff}
.opt[disabled]{cursor:default}
.feedback{margin-top:14px;border-radius:14px;padding:14px 16px;font-size:.98rem}
.feedback b{font-family:var(--f-display)}
.feedback.ok{background:var(--ok-soft);color:var(--text)} .feedback.ok b{color:var(--ok)}
.feedback.no{background:var(--danger-soft);color:var(--text)} .feedback.no b{color:var(--danger)}
.q-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.result{text-align:center;padding:10px 0}
.result .big{font:800 3rem/1 var(--f-display);color:var(--heading)}
.result p{margin-top:8px;color:var(--muted)}
.result .actions{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:18px}
.result .trophy{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;background:var(--gold);color:var(--on-gold);margin:0 auto 12px}
.result .trophy .i{width:32px;height:32px}

/* practice widgets */
.check-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.check-list label{display:flex;gap:12px;align-items:flex-start;background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:12px 14px;cursor:pointer}
.check-list input{width:22px;height:22px;margin-top:2px;accent-color:var(--ok);flex:none}
.check-list input:checked + span{color:var(--muted);text-decoration:line-through;text-decoration-color:var(--line-strong)}
.done-msg{margin-top:14px;display:flex;align-items:center;gap:10px;font:650 1rem/1.3 var(--f-display);color:var(--ok)}
.sort-pool{display:flex;flex-wrap:wrap;gap:8px;min-height:52px;padding:10px;border:1.5px dashed var(--line-strong);border-radius:14px}
.sort-item{border:1.5px solid var(--line-strong);background:var(--surface);border-radius:999px;padding:9px 15px;font:600 .96rem/1 var(--f-display);color:var(--heading);cursor:pointer}
.sort-item[aria-pressed="true"]{background:var(--link);border-color:var(--link);color:#fff}
.sort-item.right{border-color:var(--ok);background:var(--ok-soft);color:var(--heading)} .sort-item.wrong{border-color:var(--danger);background:var(--danger-soft);color:var(--heading)}
.buckets{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,200px),1fr));gap:12px;margin-top:14px}
.bucket{border:1.5px solid var(--line);background:var(--surface-2);border-radius:16px;padding:12px;min-height:120px;cursor:pointer;text-align:left}
.bucket .put{font:650 .82rem/1 var(--f-display);color:var(--link);background:none;border:1px solid var(--line-strong);border-radius:999px;padding:5px 10px;cursor:pointer}
.bucket h4{font-size:1rem;font-weight:720;margin-bottom:10px;display:flex;justify-content:space-between}
.bucket .in{display:flex;flex-wrap:wrap;gap:8px}
.bucket.armed{border-color:var(--link);box-shadow:0 0 0 2px var(--link) inset}
.gym{display:grid;gap:14px}
.gym-pad{position:relative;height:260px;border-radius:16px;background:var(--surface-2);border:1.5px solid var(--line);overflow:hidden;touch-action:none;user-select:none;-webkit-user-select:none;display:grid;place-items:center}
.gym-target{width:96px;height:96px;border-radius:50%;background:var(--sky);color:#fff;display:grid;place-items:center;font:700 .95rem/1.1 var(--f-display);text-align:center;transition:transform .15s}
.gym-target.hit{background:var(--ok)}
.gym-card{width:180px;height:110px;border-radius:16px;background:var(--surface);border:1.5px solid var(--line-strong);display:grid;place-items:center;font:650 1rem/1.2 var(--f-display);color:var(--heading);transition:transform .2s}
.gym-steps{display:flex;flex-wrap:wrap;gap:8px}
.gym-steps span{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:6px 12px;font:600 .88rem/1 var(--f-display);background:var(--surface-2);border:1px solid var(--line);color:var(--muted)}
.gym-steps span.on{background:var(--sky-soft);color:var(--heading);border-color:var(--sky)}
.gym-steps span.ok{background:var(--ok-soft);color:var(--ok);border-color:var(--ok)}
.gym-msg{font:650 1.05rem/1.35 var(--f-display);color:var(--heading)}
.desk{position:relative;height:300px;border-radius:16px;background:var(--surface-2);border:1.5px solid var(--line);overflow:hidden;user-select:none;-webkit-user-select:none;touch-action:none}
.desk-item{position:absolute;display:flex;flex-direction:column;align-items:center;gap:6px;width:96px;padding:8px;border-radius:12px;font:600 .85rem/1.2 var(--f-display);color:var(--heading);text-align:center;cursor:pointer;background:none;border:0}
.desk-item .i{width:42px;height:42px;color:var(--link)}
.desk-item.folder .i{color:#E59E0B}
.desk-item.done{outline:2.5px solid var(--ok);background:var(--ok-soft)}
.desk-menu{position:absolute;background:var(--surface);border:1px solid var(--line-strong);border-radius:12px;box-shadow:var(--shadow);padding:6px;font:560 .9rem/1 var(--f-display);min-width:150px;z-index:3}
.desk-menu div{padding:9px 12px;border-radius:8px;color:var(--heading)}
.type-target{font:600 1.25rem/1.5 ui-monospace,Menlo,Consolas,monospace;background:var(--surface-2);border-radius:12px;padding:12px 14px;color:var(--heading);letter-spacing:.02em;word-break:break-word}
.type-target .ok{color:var(--ok)} .type-target .bad{color:var(--danger);text-decoration:underline} .type-target .cur{border-bottom:3px solid var(--gold)}
.input,.textarea{width:100%;border:1.5px solid var(--line-strong);background:var(--surface);border-radius:12px;padding:12px 14px;font:500 1.05rem/1.45 var(--f-display);color:var(--heading)}
.textarea{min-height:140px;resize:vertical;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.98rem}
.textarea.prose{font-family:var(--f-display);font-size:1.02rem}
.input:focus,.textarea:focus{outline:none;border-color:var(--link);box-shadow:0 0 0 3px color-mix(in srgb,var(--link) 25%,transparent)}
.field{display:grid;gap:6px;margin-bottom:12px}
.field label{font:650 .92rem/1.2 var(--f-display);color:var(--heading)}
.meter{height:12px;border-radius:999px;background:var(--surface-2);overflow:hidden;border:1px solid var(--line)}
.meter i{display:block;height:100%;width:0;transition:width .3s,background .3s}
.tips{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:8px}
.tips li{display:flex;gap:10px;align-items:flex-start;font-size:.97rem}
.tips li .i{margin-top:4px}
.tips li.ok .i{color:var(--ok)} .tips li.no .i{color:var(--muted)}
.stats-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
.stat{background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:10px 14px;font:600 .92rem/1.2 var(--f-display);color:var(--muted)}
.stat b{display:block;font:780 1.4rem/1.1 var(--f-display);color:var(--heading)}
.html-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:700px){.html-grid{grid-template-columns:1fr}}
.html-grid iframe{width:100%;min-height:260px;border:1.5px solid var(--line-strong);border-radius:12px;background:#fff}
.knn{display:grid;gap:12px}
.knn canvas{width:100%;height:auto;aspect-ratio:4/3;border-radius:14px;border:1.5px solid var(--line);background:var(--surface-2);touch-action:none;cursor:crosshair}
.seg{display:inline-flex;border:1.5px solid var(--line-strong);border-radius:999px;overflow:hidden;flex-wrap:wrap}
.seg button{border:0;background:none;padding:9px 14px;font:620 .92rem/1 var(--f-display);color:var(--heading);cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--heading);color:var(--bg)}
.nw-sentence{font:680 1.4rem/1.35 var(--f-display);color:var(--heading)}
.nw-sentence .blank{display:inline-block;min-width:90px;border-bottom:3px solid var(--gold);text-align:center;color:var(--link)}
.nw-bars{display:grid;gap:8px;margin-top:12px}
.nw-bars div{display:grid;grid-template-columns:110px 1fr 46px;gap:10px;align-items:center;font:600 .95rem/1 var(--f-display)}
.nw-bars span.b{height:16px;border-radius:999px;background:var(--surface-2);overflow:hidden}
.nw-bars span.b i{display:block;height:100%;background:var(--sky)}
.case{border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin-bottom:12px;background:var(--surface-2)}
.case .ct{font:650 1.05rem/1.4 var(--f-display);color:var(--heading);margin-bottom:10px}

/* tests */
.test-wrap{max-width:780px;margin:0 auto;padding:clamp(28px,4vw,48px) 0 64px}
.test-wrap h1{font-size:clamp(1.9rem,1.3rem + 2.2vw,2.8rem);font-weight:780}

/* my progress + certificate */
.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr));gap:18px}
.badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px}
.badge{display:flex;flex-direction:column;align-items:center;gap:6px;width:96px;text-align:center;font:600 .78rem/1.2 var(--f-display);color:var(--muted)}
.badge .b{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;background:var(--surface-2);border:2px dashed var(--line-strong);color:var(--line-strong);font:800 1.2rem/1 var(--f-display)}
.badge.on .b{background:var(--gold);border:0;color:var(--on-gold);box-shadow:0 6px 18px -6px rgba(244,169,22,.7)}
.badge.on{color:var(--heading)}
.code-box{font:600 .95rem/1.5 ui-monospace,Menlo,Consolas,monospace;background:var(--surface-2);border:1px dashed var(--line-strong);border-radius:12px;padding:12px 14px;word-break:break-all;color:var(--heading)}
.cert{position:relative;background:#FFFDF7;color:#0B1830;border-radius:10px;padding:56px 52px;text-align:center;border:12px solid #0F1E36;box-shadow:inset 0 0 0 3px #F4A916;max-width:900px;margin:0 auto;font-family:var(--f-display)}
.cert img{height:64px;margin:0 auto 18px}
.cert .k{font:700 .85rem/1 var(--f-display);letter-spacing:.24em;text-transform:uppercase;color:#0665A2}
.cert h2{font:800 clamp(1.8rem,1.2rem + 2.4vw,3rem)/1.05 var(--f-display);color:#0B1830;margin-top:12px}
.cert .name{font:700 clamp(1.8rem,1.2rem + 2.6vw,3.2rem)/1.1 var(--f-body);color:#0B1830;margin:26px auto 8px;border-bottom:2px solid #D5E0EA;padding-bottom:12px;max-width:640px;font-style:italic}
.cert p{color:#334155;font-family:var(--f-body)}
.cert .meta{display:flex;justify-content:space-between;gap:16px;margin-top:34px;font:600 .85rem/1.4 var(--f-display);color:#55657B;text-align:left}
.cert .meta b{display:block;color:#0B1830;font-size:.95rem}
@media print{
  body{background:#fff}
  .lh-header,.lh-footer,.no-print,.skip{display:none!important}
  .cert{box-shadow:inset 0 0 0 3px #F4A916;border-width:10px;margin:0;max-width:none;break-inside:avoid}
  @page{size:A4 landscape;margin:12mm}
}

/* toast */
.toast{position:fixed;left:50%;bottom:calc(env(safe-area-inset-bottom,0px) + 18px);transform:translate(-50%,20px);opacity:0;z-index:90;background:var(--heading);color:var(--bg);border-radius:999px;padding:12px 18px;font:620 .95rem/1.2 var(--f-display);display:flex;align-items:center;gap:10px;transition:opacity .25s,transform .25s;pointer-events:none;max-width:calc(100vw - 32px)}
.toast.on{opacity:1;transform:translate(-50%,0)}
.confetti{position:fixed;inset:0;pointer-events:none;z-index:95;overflow:hidden}
.confetti i{position:absolute;top:-12px;width:9px;height:14px;border-radius:2px;animation:fall 1.6s ease-in forwards}
@keyframes fall{to{transform:translateY(105vh) rotate(540deg);opacity:.9}}
@media (prefers-reduced-motion:reduce){.confetti{display:none}.bar > i{transition:none}}

/* footer */
.lh-footer{background:#0A1628;color:#A9BACE;padding:36px 0 28px;margin-top:40px;font:500 .93rem/1.6 var(--f-display)}
.lh-footer .row{display:flex;flex-wrap:wrap;gap:20px 40px;justify-content:space-between;align-items:flex-start}
.lh-footer img{height:44px;width:auto}
.lh-footer a{color:#EEF4FA;text-decoration:none} .lh-footer a:hover{text-decoration:underline}
.lh-footer ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px 20px}
.lh-footer .fine{width:100%;border-top:1px solid rgba(255,255,255,.1);padding-top:16px;margin-top:6px;font-size:.85rem}
.offline-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin-top:14px;font:560 .92rem/1.3 var(--f-display);color:var(--muted)}