:root{
  --indigo:#0b3b73; --indigo-d:#082a52; --gold:#f58220; --gold-d:#c4620f;
  --paper:#f2f5fa; --card:#ffffff; --ink:#18203a; --mute:#5b6485; --line:#d9dfec;
  --ok:#157a46; --okbg:#dff3e7; --bad:#c0262d; --badbg:#fde3e4; --half:#b36200; --halfbg:#fff0d6;
  --pfs:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Mukta","Noto Sans Devanagari","Mangal","Segoe UI",system-ui,sans-serif;line-height:1.65;font-size:17.5px}
a{color:var(--indigo)}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px}
[hidden]{display:none!important}
.wrap{max-width:1080px;margin:0 auto;padding:0 18px}

/* ===== top utility bar ===== */
.util{background:#06305e;color:#fff;font-size:14px}
.util .wrap{display:flex;justify-content:flex-end;gap:14px;align-items:center;min-height:36px;flex-wrap:wrap}
.util a,.util button{color:#fff;background:none;border:0;font:inherit;cursor:pointer;padding:0}
.util a{text-decoration:underline}
.util .sep{width:1px;height:18px;background:rgba(255,255,255,.35)}
.util .fs button{border:1px solid rgba(255,255,255,.55);border-radius:5px;padding:0 9px;margin-left:4px;line-height:22px}
.util .fs button:hover{background:rgba(255,255,255,.15)}
.util .skip{margin-right:auto}

/* ===== banner ===== */
.banner{background:linear-gradient(100deg,#0bb4e6 0,#8ad6ee 20%,#e6edf2 46%,#eef1f4 100%);border-bottom:1px solid #c9d4de}
.banner .wrap{display:flex;align-items:center;gap:22px;padding-top:12px;padding-bottom:12px}
.logo{width:100px;height:100px;flex:none;filter:drop-shadow(0 2px 4px rgba(0,0,0,.28))}
.bt{flex:1;min-width:0}
.bt .org{font-family:"Yatra One","Mukta",serif;color:#d9531e;font-size:clamp(16px,2.3vw,26px);line-height:1.2}
.bt .ttl{font-family:"Yatra One","Mukta",serif;color:#0b4c8c;font-size:clamp(24px,4.6vw,52px);line-height:1.15;margin:2px 0}
.bt .en{color:#2e4d6b;font-weight:700;font-size:clamp(13px,1.7vw,19px)}
.lap{width:170px;flex:none}

/* ===== nav bar ===== */
.navbar{background:#0a66b2;position:sticky;top:0;z-index:30;box-shadow:0 2px 6px rgba(0,0,0,.22)}
.navbar .wrap{display:flex;align-items:stretch;flex-wrap:wrap;min-height:50px}
nav#nav{display:flex;flex-wrap:wrap}
nav#nav a{color:#fff;text-decoration:none;padding:7px 16px;font-weight:700;font-size:16px;border-bottom:3px solid transparent;display:flex;flex-direction:column;justify-content:center;line-height:1.15}
nav#nav a small{font-weight:500;font-size:11.5px;opacity:.85}
nav#nav a:hover{background:rgba(255,255,255,.12)}
nav#nav a.on{border-bottom-color:#ffd24d;background:rgba(0,0,0,.12)}
.navbar .right{margin-left:auto;display:flex;align-items:stretch}
.who{background:transparent;border:0;border-left:1px solid rgba(255,255,255,.25);color:#fff;padding:0 14px;font:inherit;font-size:14px;cursor:pointer}
.who:hover{background:rgba(255,255,255,.12)}
.cta{background:var(--gold);color:#fff;font-weight:800;text-decoration:none;display:flex;align-items:center;padding:0 22px;font-size:16px}
.cta:hover{filter:brightness(1.08)}
#burger{display:none;background:transparent;border:0;color:#fff;padding:0 14px;font:inherit;font-weight:700;cursor:pointer}

/* ===== hero slide ===== */
.slide{position:relative;overflow:hidden;background:linear-gradient(90deg,#f6f8fa,#fff 45%,#f2f4f7)}
.slide .wrap{position:relative;min-height:440px;display:flex;align-items:center}
.swoosh{position:absolute;left:0;top:0;height:100%;width:min(48%,620px)}
.kc{position:absolute;left:3%;top:50%;width:min(31%,330px);transform:translateY(-50%) rotate(-6deg);display:grid;grid-template-columns:repeat(5,1fr);gap:9px;z-index:2}
.kc span{aspect-ratio:1;display:grid;place-items:center;background:#f6f8ff;color:#082a52;border-radius:11px;font-weight:800;font-size:clamp(18px,2.6vw,30px);box-shadow:0 5px 0 #9fb1d6,0 9px 12px rgba(0,0,0,.3)}
.kc span:nth-child(3n){background:#ffb255;box-shadow:0 5px 0 #c4620f,0 9px 12px rgba(0,0,0,.3)}
.kc span:nth-child(4n+1){transform:translateY(8px)}
.stext{position:relative;z-index:2;margin-left:38%;width:27%;min-width:280px;padding:30px 0}
.stext .e1{font-weight:800;color:#0b3b73;font-size:clamp(24px,3.1vw,40px);line-height:1.08}
.stext .e2{font-weight:800;color:#f58220;font-size:clamp(18px,2.3vw,30px);line-height:1.1;margin-bottom:10px}
.stext .h1{font-family:"Yatra One","Mukta",serif;color:#8d2a14;font-size:clamp(26px,3.3vw,40px);line-height:1.2;margin:6px 0 14px}
.stext p{color:#3c4a60;margin:0 0 16px;font-size:15.5px}
.stext .btn{margin:0 6px 8px 0}
.notice{position:absolute;right:0;top:22px;width:330px;z-index:5;box-shadow:0 8px 24px rgba(0,0,0,.35);border-radius:4px 4px 0 0}
.notice .nh{background:#f58220;color:#fff;display:flex;align-items:center;padding:8px 14px 8px 18px;gap:10px;position:relative}
.notice .nh b{font-size:19px;font-weight:700}
.notice .nh a{margin-left:auto;background:#0a66b2;color:#fff;border-radius:99px;padding:1px 12px;font-size:13px;font-weight:700;text-decoration:none}
.notice .x{position:absolute;left:-12px;top:-12px;width:26px;height:26px;border-radius:50%;background:#ffc400;border:0;font-weight:800;cursor:pointer;color:#111;line-height:1}
.notice ul{list-style:none;margin:0;padding:6px 16px 10px;background:rgba(40,28,22,.94)}
.notice li{border-bottom:1px dashed rgba(255,255,255,.35);padding:9px 0;line-height:1.4;font-size:15px}
.notice li:last-child{border:0}
.notice li a{color:#fff}
.notice .new{display:inline-block;background:#e11d2e;color:#fff;border-radius:99px;font-size:10.5px;font-weight:800;padding:0 7px;margin-left:5px;vertical-align:middle}

/* ===== sections ===== */
.sec{padding:34px 0}
.about{display:grid;grid-template-columns:310px 1fr;gap:34px;align-items:start}
.circ{width:300px;height:300px;border-radius:50%;border:8px solid #e2e4e8;overflow:hidden;background:#e9edf0;box-shadow:0 3px 10px rgba(0,0,0,.12)}
.circ svg{width:100%;height:100%;display:block}
.about p{margin:0 0 12px;text-align:justify}
.pc{background:#fff;border:1px solid var(--line);border-top:5px solid var(--gold);border-radius:6px;padding:18px;display:flex;flex-direction:column;gap:6px}
.pc .ic{width:48px;height:48px;border-radius:12px;background:var(--indigo);color:#fff;display:grid;place-items:center;font-size:24px;font-weight:800;box-shadow:0 4px 0 var(--indigo-d)}
.pc h3{margin:6px 0 0}
.pc p{margin:0;color:var(--mute);font-size:15.5px;flex:1}
.pc .btn{align-self:flex-start;margin-top:8px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;counter-reset:st}
.steps div{background:#fff;border:1px solid var(--line);border-radius:6px;padding:16px 16px 16px 16px;position:relative}
.steps div::before{counter-increment:st;content:counter(st);display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--gold);color:#fff;font-weight:800;margin-bottom:8px}
.steps b{display:block;color:var(--indigo-d)}
.steps span{font-size:15px;color:var(--mute)}
details.faq{background:#fff;border:1px solid var(--line);border-radius:6px;padding:10px 16px;margin-bottom:8px}
details.faq summary{cursor:pointer;font-weight:700;color:var(--indigo-d)}
details.faq p{margin:8px 0 2px;color:var(--mute)}
.warnbox{background:#fff4e5;border-left:5px solid var(--gold);padding:12px 16px;border-radius:4px;margin-top:14px}

/* ===== buttons ===== */
.btn{display:inline-block;border:0;cursor:pointer;font:inherit;font-weight:700;font-size:16px;padding:10px 20px;border-radius:6px;text-decoration:none;background:var(--gold);color:#fff;box-shadow:0 3px 0 var(--gold-d)}
.btn:hover{filter:brightness(1.06)}
.btn:active{transform:translateY(2px);box-shadow:0 1px 0 var(--gold-d)}
.btn.alt{background:#fff;color:var(--indigo);box-shadow:0 3px 0 #b9c6dc;border:1px solid var(--line)}
.btn.dark{background:var(--indigo);color:#fff;box-shadow:0 3px 0 var(--indigo-d)}
.btn.sm{padding:6px 12px;font-size:14px}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* generic */
main{padding:28px 0 50px}
h2{font-family:"Mukta","Noto Sans Devanagari",sans-serif;font-weight:800;font-size:28px;line-height:1.3;margin:0 0 10px;color:var(--indigo-d);padding-bottom:6px;border-bottom:1px solid var(--line)}
h3{font-size:19px;margin:0 0 6px;color:var(--indigo-d)}
.lead{color:var(--mute);margin:0 0 20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;margin-bottom:18px}
.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.feat{border-left:5px solid var(--gold);background:var(--card);border-radius:10px;padding:14px 16px;border-top:1px solid var(--line);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.feat p{margin:0;color:var(--mute);font-size:15.5px}
table{width:100%;border-collapse:collapse;font-size:15.5px}
th,td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{background:#eaeefa;color:var(--indigo-d);font-weight:600}
.tscroll{overflow-x:auto}
code,.f{background:#eaeefa;padding:2px 7px;border-radius:6px;font-family:Consolas,monospace;font-size:14.5px}
.note{background:#fff8e1;border:1px solid #f1dc92;border-radius:10px;padding:10px 14px;font-size:15px;color:#5a4800}
.small{font-size:14.5px;color:var(--mute)}

/* form controls */
.ctl{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;align-items:end}
label.l{display:block;font-size:14px;font-weight:600;color:var(--mute);margin-bottom:3px}
select,input[type=text],input[type=file],textarea{width:100%;font:inherit;font-size:16px;padding:9px 11px;border:1.5px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
select:focus,textarea:focus,input:focus{border-color:var(--indigo);outline:none;box-shadow:0 0 0 3px rgba(31,42,107,.15)}
.chk{display:flex;gap:8px;align-items:center;font-weight:500;padding:9px 0}
.chk input{width:20px;height:20px;accent-color:var(--indigo)}

/* typing */
.hud{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:12px}
.pill{background:#eaeefa;border-radius:10px;padding:6px 14px;font-weight:600;color:var(--indigo-d);font-size:15px}
.pill b{font-size:20px;font-variant-numeric:tabular-nums}
.pill.time b{font-size:26px}
.pill.low{background:var(--badbg);color:var(--bad)}
.prog{height:7px;background:#e3e8f5;border-radius:99px;overflow:hidden;margin-bottom:12px}
.prog i{display:block;height:100%;width:0;background:var(--gold);transition:width .25s linear}
.pbox{position:relative;height:210px;overflow-y:auto;border:1.5px solid var(--line);border-radius:12px;padding:14px 16px;background:#fbfcff;font-size:var(--pfs);line-height:1.95;user-select:none;-webkit-user-select:none;scroll-behavior:auto}
.pbox .w{padding:1px 2px;border-radius:5px}
.w.ok{color:var(--ok);background:var(--okbg)}
.w.bad{color:var(--bad);background:var(--badbg);text-decoration:underline wavy}
.w.half{color:var(--half);background:var(--halfbg)}
.w.cur{background:#dfe5ff;box-shadow:inset 0 -3px 0 var(--indigo)}
.w.cur.curbad{background:var(--badbg);box-shadow:inset 0 -3px 0 var(--bad)}
.w.pend{opacity:.45}
.w.miss{color:var(--bad);background:var(--badbg);text-decoration:line-through}
textarea.typein{height:130px;margin-top:12px;font-size:var(--pfs);line-height:1.6;resize:vertical}
textarea.kdfont{font-family:"Kruti Dev 010","Kruti Dev","Noto Sans Devanagari",sans-serif}
textarea.kdfont::placeholder{font-family:"Noto Sans Devanagari","Mukta",Arial,sans-serif}
.kdprev{margin-top:8px;background:#eef6ee;border:1px dashed #9cc59f;border-radius:10px;padding:8px 12px;font-size:17px;min-height:42px;color:#1c4a22;word-break:break-word}
.kdprev small{display:block;color:#4a7a50;font-size:12.5px}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px;align-items:center}
.fsz{margin-left:auto;display:flex;gap:6px;align-items:center}

/* result */
.stat{background:#f5f7fd;border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.stat b{display:block;font-size:30px;line-height:1.2;color:var(--indigo-d);font-variant-numeric:tabular-nums}
.stat span{font-size:14px;color:var(--mute)}
.stat.good{background:var(--okbg);border-color:#a8d9bc}.stat.good b{color:var(--ok)}
.stat.warn{background:var(--halfbg);border-color:#f0cf8f}.stat.warn b{color:var(--half)}
.stat.err{background:var(--badbg);border-color:#f0b4b7}.stat.err b{color:var(--bad)}
.annot{font-size:19px;line-height:2;max-height:320px;overflow:auto;border:1px solid var(--line);border-radius:12px;padding:12px 16px;background:#fbfcff}
.legend{display:flex;gap:12px;flex-wrap:wrap;font-size:14px;margin:8px 0}
.legend span{padding:1px 10px;border-radius:6px}
canvas{width:100%;height:270px;display:block}
.tabs{display:flex;gap:8px;margin-bottom:12px;flex-wrap:wrap}
.tabs button{border:1px solid var(--line);background:#fff;font:inherit;padding:6px 14px;border-radius:99px;cursor:pointer}
.tabs button.on{background:var(--indigo);color:#fff;border-color:var(--indigo)}
dialog{border:0;border-radius:16px;padding:22px;max-width:420px;width:92%;box-shadow:0 20px 60px rgba(0,0,0,.35)}
dialog::backdrop{background:rgba(20,28,74,.6)}
footer{background:#06305e;color:#c4d3ea;padding:10px 0 26px;font-size:14.5px;margin-top:-1px}
footer b{color:#fff}

@media(max-width:1020px){
  .notice{position:static;width:auto;margin:0 -18px;box-shadow:none;border-radius:0}
  .notice .x{display:none}
  .slide .wrap{flex-direction:column;align-items:stretch;min-height:0}
  .swoosh{width:100%;height:160px;top:0}
  .kc{position:relative;left:auto;top:auto;transform:rotate(-4deg);width:220px;margin:24px auto 52px}
  .stext{margin:0;width:auto;min-width:0;padding:10px 0 24px}
}
@media(max-width:800px){
  .g2,.g3,.g4,.steps{grid-template-columns:1fr 1fr}
  .about{grid-template-columns:1fr}.circ{margin:0 auto}
  .lap{display:none}
  #burger{display:block}
  nav#nav{display:none;width:100%;flex-direction:column;order:5}
  nav#nav.open{display:flex}
  .navbar .right{margin-left:auto}
  .logo{width:76px;height:76px}
}
@media(max-width:520px){.g2,.g3,.g4,.steps{grid-template-columns:1fr}.pbox{height:180px}.cta{padding:0 12px;font-size:14px}.who{display:none}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* ===== अभ्यास अध्याय ===== */
textarea.big{min-height:300px;font-size:var(--pfs);line-height:1.7;resize:vertical}
.hidetxt{filter:blur(7px);user-select:none}
@media print{body.printing>*:not(#printArea){display:none!important}}
#printArea{display:none}

.crumbs{font-size:14px;color:var(--mute);margin:0 0 8px}.crumbs a{color:var(--indigo);font-weight:700}
.cprog{display:inline-block;background:#eaeefa;color:var(--indigo-d);font-weight:800;border-radius:99px;padding:4px 14px}
.lg{font-size:20px;color:var(--indigo);margin:24px 0 10px}.lg small{color:var(--mute);font-weight:500}
.lgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}
.lcard{display:flex;flex-direction:column;gap:4px;background:#fff;border:1px solid var(--line);border-left:5px solid var(--indigo);border-radius:12px;padding:12px 14px;color:var(--ink);text-decoration:none;box-shadow:0 3px 10px rgba(11,59,115,.06)}.lcard:hover{box-shadow:0 8px 20px rgba(11,59,115,.14);transform:translateY(-2px)}.lcard.done{border-left-color:var(--ok);background:#f4fbf7}
.lcard .ln{font-size:12px;font-weight:800;color:var(--gold-d)}.lcard .lst{font-size:13px;font-weight:700;color:var(--ok);min-height:16px}
.kchips{display:flex;flex-wrap:wrap;gap:10px}.kchip{display:flex;flex-direction:column;align-items:center;min-width:64px;background:#fff;border:1px solid var(--line);border-bottom:4px solid var(--indigo);border-radius:10px;padding:8px 10px}.kchip .kkey{font-family:Consolas,monospace;font-weight:800;font-size:18px;color:var(--indigo)}.kchip .kglyph{font-size:22px;color:var(--ink)}
.ccgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;max-width:820px}.cc{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px;display:flex;flex-direction:column;gap:10px;box-shadow:0 6px 20px rgba(11,59,115,.08);transition:transform .15s,box-shadow .15s}.cc:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(11,59,115,.14)}.cc h3{margin:6px 0 0;font-size:26px}.cc p{color:var(--mute);margin:0}.cci{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:22px}.cci.hi{background:#eaeefa;color:var(--indigo)}.cci.en{background:var(--halfbg);color:var(--gold-d)}.cc .btn{width:100%;text-align:center}.cc .btn:first-of-type{margin-top:auto}.tutorbox{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;background:#fff7ec;border:1px solid #f5c58a;border-left:5px solid var(--gold);border-radius:12px;padding:14px 16px;margin:14px 0}.tutorbox span{color:var(--mute);font-size:14px}
#tKdPrev{display:none!important}
#scoreDlg{border:0;border-radius:16px;padding:20px;max-width:580px;width:calc(100% - 28px);box-shadow:0 20px 60px rgba(8,42,82,.45)}
#scoreDlg::backdrop{background:rgba(8,42,82,.6)}
.verdict{font-size:24px;font-weight:800;text-align:center;border-radius:12px;padding:14px;margin-bottom:8px}
.verdict.great{background:var(--okbg);color:var(--ok)}.verdict.good{background:#eaeefa;color:var(--indigo-d)}.verdict.keep{background:var(--halfbg);color:var(--half)}
.dlgx{position:absolute;top:8px;right:10px;width:34px;height:34px;border:0;border-radius:50%;background:#eaeefa;color:var(--indigo-d);font-size:18px;font-weight:700;cursor:pointer}.dlgx:hover{background:var(--gold);color:#fff}
.foot-links{margin:0 0 8px}.foot-links a{color:#c4d3ea;font-weight:700;margin-right:14px}

/* ===== course page hero ===== */
.hero3{background:linear-gradient(135deg,#3f5bd9 0%,#6a4be0 100%);color:#fff;text-align:center;padding:48px 18px 44px}
.hero3-in{max-width:860px;margin:0 auto}
.hero3 h2{color:#fff;border:0;padding:0;margin:0 0 16px;font-size:clamp(28px,5vw,46px);line-height:1.25}
.hero3 p{margin:0 auto;max-width:760px;font-size:18px;line-height:1.7;color:#eef0ff}
.hero3 p b{color:#fff}
.chips3{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chips3 span{background:#eaeefa;color:var(--indigo);border-radius:999px;padding:6px 16px;font-size:15px;font-weight:600}