@font-face{font-family:"Montserrat";src:url(fonts/montserrat-latin-600-normal.woff2) format("woff2");font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:"Montserrat";src:url(fonts/montserrat-latin-700-normal.woff2) format("woff2");font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:"Montserrat";src:url(fonts/montserrat-latin-800-normal.woff2) format("woff2");font-weight:800;font-style:normal;font-display:swap}
@font-face{font-family:"Open Sans";src:url(fonts/open-sans-latin-400-normal.woff2) format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Open Sans";src:url(fonts/open-sans-latin-600-normal.woff2) format("woff2");font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:"Open Sans";src:url(fonts/open-sans-latin-700-normal.woff2) format("woff2");font-weight:700;font-style:normal;font-display:swap}
/* Project Masoom portal. Yi brand: orange, green, charcoal, with Masoom blue. Montserrat headings, Open Sans body. */
:root{
  --bg:#f4f3f1; --surface:#ffffff; --surface-2:#eceae7; --line:#d9d5d1;
  --fg:#2b292a; --muted:#5f5b5d; --accent:#c95a1a; --accent-ink:#ffffff;
  --masoom:#0e519e; --masoom-ink:#ffffff; --green:#0b7f45; --warn:#9a6200; --danger:#b3261e;
  --display:"Montserrat",Helvetica,Arial,sans-serif;
  --body:"Open Sans",Helvetica,Arial,sans-serif;
  --r:12px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#171616; --surface:#222020; --surface-2:#2c2a2a; --line:#3d3a3a;
  --fg:#f1efed; --muted:#b2aeab; --accent:#f37d35; --accent-ink:#1a1206;
  --masoom:#7fb2f0; --masoom-ink:#0b1a2e; --green:#4cc585; --warn:#f2b43a; --danger:#ff8a80; color-scheme:dark}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--fg);font:16px/1.55 var(--body);margin:0;
  padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
img{max-width:100%}
[hidden]{display:none!important}
.wrap{max-width:920px;margin:0 auto;padding-inline:16px;padding-block:16px 56px;display:grid;gap:20px}
h1,h2,h3{font-family:var(--display);margin:0;line-height:1.15;text-wrap:balance}
h1{font-size:clamp(1.6rem,5vw,2.4rem);font-weight:800;letter-spacing:-.01em}
h2{font-size:1.3rem;font-weight:700}
h3{font-size:1.02rem;font-weight:700}
p{margin:0}
a{color:var(--masoom)}
.logoband{background:#ffffff;border-radius:var(--r);border:1px solid var(--line);padding:6px 10px;display:block}
.logoband img{display:block;width:100%;height:auto}
.nav{display:flex;gap:6px;flex-wrap:wrap}
.nav a{font:600 .86rem var(--body);text-decoration:none;color:var(--fg);border:1px solid var(--line);border-radius:999px;padding:6px 14px;background:var(--surface)}
.nav a[aria-current="page"]{background:var(--fg);color:var(--bg);border-color:var(--fg)}
.eyebrow{font:700 .74rem var(--display);letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.muted{color:var(--muted)}
header.hero{display:grid;gap:8px}
header.hero p{max-width:62ch}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px;display:grid;gap:16px;min-width:0}
.split{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:20px;align-items:start}
@media (max-width:700px){.split{grid-template-columns:1fr}}
.aside{background:var(--surface-2);border-radius:10px;padding:16px;display:grid;gap:10px;font-size:.9rem}
.aside ol{margin:0;padding-left:1.2rem;display:grid;gap:6px}
form{display:grid;gap:14px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:520px){.grid2{grid-template-columns:1fr}}
label{display:grid;gap:5px;font-size:.86rem;font-weight:600;min-width:0}
label small{font-weight:400;color:var(--muted)}
input,select,textarea{font:inherit;color:var(--fg);background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:10px 11px;width:100%;min-width:0}
input[type=checkbox]{width:20px;height:20px;margin:2px 0 0;flex:none;accent-color:var(--accent)}
.check{display:flex;gap:10px;align-items:flex-start;font-weight:400;font-size:.92rem}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.row.between{justify-content:space-between}
.btn{font:700 .95rem var(--body);border:0;border-radius:999px;padding:11px 20px;cursor:pointer;background:var(--accent);color:var(--accent-ink);text-decoration:none;display:inline-block}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.outline{background:transparent;color:var(--fg);border:1px solid var(--line)}
.btn.blue{background:var(--masoom);color:var(--masoom-ink)}
.btn.sm{padding:6px 12px;font-size:.82rem}
.btn.danger{background:var(--danger);color:#fff}
button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible,summary:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.status{font-size:.88rem;min-height:1.3em}
.status.err{color:var(--danger)} .status.ok{color:var(--green)}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px}
.steps li{display:grid;gap:6px;font-size:.78rem;color:var(--muted);min-width:0}
.steps li::before{content:"";height:5px;border-radius:3px;background:var(--surface-2)}
.steps li.done::before{background:var(--green)}
.steps li.now{color:var(--fg);font-weight:700}
.steps li.now::before{background:var(--accent)}
.slide{border-radius:10px;overflow:hidden;border:1px solid var(--line);background:#1f2a44;aspect-ratio:16/9;max-width:100%}
.slide img{display:block;width:100%;height:100%;object-fit:contain}
.player{display:grid;gap:12px}
.player audio{width:100%}
.dots{display:flex;gap:6px;flex-wrap:wrap}
.dot{width:30px;height:30px;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--muted);font:600 .78rem var(--body);cursor:pointer;font-variant-numeric:tabular-nums}
.dot.seen{background:var(--surface-2);color:var(--fg)}
.dot.cur{background:var(--masoom);border-color:var(--masoom);color:var(--masoom-ink)}
details{background:var(--surface-2);border-radius:10px;padding:10px 14px}
details summary{cursor:pointer;font-weight:600;font-size:.9rem}
details p{margin-top:8px;font-size:.92rem;max-width:68ch}
.q{display:grid;gap:8px;padding:14px 0;border-top:1px solid var(--line)}
.q:first-of-type{border-top:0;padding-top:0}
.q fieldset{border:0;margin:0;padding:0;display:grid;gap:6px;min-width:0}
.q legend{font-weight:700;padding:0;margin-bottom:6px}
.opt{display:flex;gap:10px;align-items:flex-start;padding:8px 10px;border:1px solid var(--line);border-radius:8px;font-size:.94rem;cursor:pointer}
.opt input{width:18px;height:18px;margin:2px 0 0;flex:none;accent-color:var(--masoom)}
.opt.right{border-color:var(--green);background:color-mix(in srgb,var(--green) 10%,transparent)}
.opt.wrong{border-color:var(--danger);background:color-mix(in srgb,var(--danger) 8%,transparent)}
.explain{font-size:.88rem;color:var(--muted)}
.explain b.okw{color:var(--green)} .explain b.badw{color:var(--danger)}
.score{display:flex;gap:16px;align-items:center;flex-wrap:wrap;background:var(--surface-2);border-radius:10px;padding:14px 16px}
.score b{font:800 2rem var(--display);font-variant-numeric:tabular-nums}
.pledge{border-left:6px solid var(--accent);background:var(--surface-2);border-radius:10px;padding:18px 20px;display:grid;gap:10px}
.pledge p.lead{font:700 1.08rem var(--display)}
.pledge ol{margin:0;padding-left:1.3rem;display:grid;gap:6px}
.cert{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#ffffff;max-width:100%}
.cert canvas{display:block;width:100%;height:auto}
.idbox{font-family:var(--display);font-weight:700;letter-spacing:.04em;font-variant-numeric:tabular-nums;background:var(--surface-2);padding:8px 12px;border-radius:8px;user-select:all;overflow-wrap:anywhere}
.share{display:grid;gap:8px;min-width:0}
.share textarea{font-size:.9rem;min-height:110px;resize:vertical}
/* leaderboard */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
@media (max-width:560px){.stats{grid-template-columns:repeat(2,minmax(0,1fr))}}
.stat{background:var(--surface-2);border-radius:10px;padding:12px;display:grid;gap:2px}
.stat b{font:700 1.5rem var(--display);font-variant-numeric:tabular-nums}
.stat span{font-size:.78rem;color:var(--muted)}
.tabs{display:flex;gap:6px;overflow-x:auto;padding-bottom:2px}
.tab{flex:none;border:1px solid var(--line);background:transparent;color:var(--fg);border-radius:999px;padding:6px 12px;font:600 .84rem var(--body);cursor:pointer}
.tab[aria-pressed="true"]{background:var(--fg);color:var(--bg);border-color:var(--fg)}
ol.board{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.lrow{display:grid;grid-template-columns:2.4rem minmax(0,1fr) auto;gap:12px;align-items:center;padding:10px 12px;border-radius:10px;background:var(--surface-2)}
.rank{font:800 1.15rem var(--display);color:var(--muted);text-align:center;font-variant-numeric:tabular-nums}
.lrow.top .rank{color:var(--accent)}
.who{min-width:0;display:grid;gap:5px}
.who strong{overflow-wrap:anywhere}
.meta{font-size:.78rem;color:var(--muted)}
.bar{height:6px;border-radius:3px;background:var(--line);overflow:hidden}
.bar i{display:block;height:100%;background:var(--green)}
.total{text-align:right}
.total b{font:700 1.2rem var(--display);display:block;font-variant-numeric:tabular-nums}
.total span{font-size:.72rem;color:var(--muted)}
.empty{padding:22px 12px;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:10px;list-style:none}
.tablewrap{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:.88rem;min-width:520px}
th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:700}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.verified{border-left:6px solid var(--green);background:var(--surface-2);border-radius:10px;padding:16px;display:grid;gap:6px}
.notfound{border-left:6px solid var(--danger);background:var(--surface-2);border-radius:10px;padding:16px}
footer{font-size:.8rem;color:var(--muted);text-align:center;display:grid;gap:4px}
@media (prefers-reduced-motion:no-preference){.steps li::before,.bar i{transition:all .3s}}