:root{
  --ink:#10242c; --muted:#5b6f77; --line:#dde6e9; --bg:#f3f7f8; --card:#fff;
  --brand:#09202e; --brand2:#12807a; --accent:#e8a33d; --gold:#b7791f;
  --ok:#14866d; --okbg:#e3f4ee; --bad:#c2410c; --badbg:#fdece4; --rev:#7c3aed; --revbg:#efe8fd;
  --r:14px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:"Hind Siliguri",system-ui,sans-serif;color:var(--ink);background:var(--bg);font-size:16px;line-height:1.55;-webkit-tap-highlight-color:transparent}
button{font:inherit;cursor:pointer}
input{font:inherit}
.wrap{max-width:760px;margin:0 auto;padding:16px}
.hero{background:linear-gradient(150deg,#09202e 0%,#0d3442 55%,#13645f 100%);color:#fff;padding:28px 16px 64px}
.hero .wrap{padding:0 16px}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:.3px;background:rgba(255,255,255,.14);padding:3px 10px;border-radius:999px}
.hero h1{font-size:28px;line-height:1.25;margin:12px 0 6px;font-weight:700}
.hero p{margin:0;opacity:.9}
.by{margin-top:14px;font-size:14px;opacity:.85}
.by b{font-weight:600}
.countdown{display:flex;gap:10px;margin-top:18px}
.cd{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);border-radius:12px;padding:8px 12px;min-width:72px;text-align:center}
.cd b{display:block;font-size:24px;line-height:1.1}
.cd span{font-size:12px;opacity:.85}
.lift{margin-top:-44px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px;margin-bottom:14px;box-shadow:0 1px 2px rgba(16,36,44,.04)}
.card h2{font-size:19px;margin:0 0 4px}
.card h3{font-size:16px;margin:0 0 8px}
.muted{color:var(--muted)}
.small{font-size:14px}
.row{display:flex;gap:10px;align-items:center}
.between{justify-content:space-between}
.wrapx{flex-wrap:wrap}
.btn{border:0;border-radius:12px;padding:12px 18px;font-weight:600;background:var(--brand);color:#fff;display:inline-flex;align-items:center;justify-content:center;gap:6px;text-decoration:none}
.btn:active{transform:translateY(1px)}
.btn.alt{background:#fff;color:var(--brand);border:1.5px solid var(--brand)}
.btn.ghost{background:transparent;color:var(--brand);padding:8px 10px}
.btn.warn{background:var(--accent);color:#2a1b00}
.btn.block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.test-item{display:flex;justify-content:space-between;align-items:center;gap:12px}
.pill{font-size:12px;border-radius:999px;padding:2px 9px;background:var(--okbg);color:var(--ok);font-weight:600}
.pill.grey{background:#eef2f3;color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:6px 12px;font-size:14px;color:var(--ink)}
.chip.on{border-color:var(--brand2);background:#e6f4f2;color:var(--brand)}
.chip .n{color:var(--muted);font-size:12px;margin-left:4px}
label.f{display:block;font-size:14px;font-weight:600;margin:12px 0 4px}
input.t{width:100%;border:1.5px solid var(--line);border-radius:10px;padding:11px 12px;background:#fff}
input.t:focus{outline:none;border-color:var(--brand2)}
.err{color:var(--bad);font-size:14px;margin-top:6px}
ul.rules{margin:8px 0 0;padding-left:20px}
ul.rules li{margin:4px 0}
table.t{width:100%;border-collapse:collapse;font-size:14px}
table.t th,table.t td{padding:8px 6px;border-bottom:1px solid var(--line);text-align:left}
table.t th{color:var(--muted);font-weight:600}
table.t td.num,table.t th.num{text-align:right;font-variant-numeric:tabular-nums}
table.t tr.me td{background:#fff7e6;font-weight:600}
footer{text-align:center;color:var(--muted);font-size:13px;padding:20px 16px 40px}
footer a{color:var(--brand2)}

/* ===== exam ===== */
.topbar{position:sticky;top:0;z-index:20;background:var(--brand);color:#fff;box-shadow:0 2px 8px rgba(0,0,0,.12)}
.topbar .wrap{padding:10px 16px;display:flex;align-items:center;gap:10px}
.topbar .title{font-weight:600;font-size:15px;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.timer{font-variant-numeric:tabular-nums;font-weight:700;font-size:18px;background:rgba(255,255,255,.14);padding:4px 10px;border-radius:10px}
.timer.low{background:var(--accent);color:#2a1b00}
.topbar .btn{padding:8px 12px;font-size:14px}
.progress{height:4px;background:rgba(255,255,255,.18)}
.progress i{display:block;height:100%;background:var(--accent);width:0;transition:width .3s}
.secbar{display:flex;gap:6px;overflow-x:auto;padding:10px 16px;max-width:760px;margin:0 auto;scrollbar-width:none}
.secbar::-webkit-scrollbar{display:none}
.secbar .chip{white-space:nowrap}
.qcard{padding:18px 16px}
.qmeta{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted);margin-bottom:8px}
.qtext{font-size:18px;font-weight:500;margin:0 0 14px}
.opt{display:flex;gap:12px;align-items:flex-start;width:100%;text-align:left;background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:12px;margin-bottom:10px;color:var(--ink);font-size:16px}
.opt .k{flex:none;width:28px;height:28px;border-radius:50%;border:1.5px solid var(--line);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px;color:var(--muted)}
.opt.sel{border-color:var(--brand2);background:#e9f6f4}
.opt.sel .k{background:var(--brand2);border-color:var(--brand2);color:#fff}
.opt.right{border-color:var(--ok);background:var(--okbg)}
.opt.right .k{background:var(--ok);border-color:var(--ok);color:#fff}
.opt.wrong{border-color:var(--bad);background:var(--badbg)}
.opt.wrong .k{background:var(--bad);border-color:var(--bad);color:#fff}
.opt[disabled]{cursor:default}
.navrow{display:flex;gap:8px;margin-top:6px}
.navrow .btn{flex:1;padding:12px 8px}
.flag.on{background:var(--revbg);color:var(--rev);border-color:var(--rev)}
.hint{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}

.sheet{position:fixed;inset:0;z-index:40;background:rgba(10,30,38,.45);display:flex;align-items:flex-end;justify-content:center}
.sheet .panel{background:#fff;width:100%;max-width:760px;max-height:82vh;overflow:auto;border-radius:18px 18px 0 0;padding:16px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(44px,1fr));gap:6px}
.grid button{border:1.5px solid var(--line);background:#fff;border-radius:9px;padding:8px 0;font-size:14px;font-variant-numeric:tabular-nums;color:var(--ink)}
.grid button.a{background:var(--brand2);border-color:var(--brand2);color:#fff}
.grid button.r{background:var(--revbg);border-color:var(--rev);color:var(--rev)}
.grid button.a.r{background:var(--rev);color:#fff}
.grid button.cur{outline:2.5px solid var(--accent);outline-offset:1px}
.grid button.ok{background:var(--okbg);border-color:var(--ok);color:var(--ok)}
.grid button.x{background:var(--badbg);border-color:var(--bad);color:var(--bad)}
.legend{display:flex;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin:8px 0 12px}
.legend i{display:inline-block;width:12px;height:12px;border-radius:3px;margin-right:4px;vertical-align:-1px;border:1.5px solid var(--line)}
.gtitle{font-size:13px;font-weight:600;color:var(--muted);margin:12px 0 6px}

/* ===== result ===== */
.score{display:flex;align-items:baseline;gap:8px}
.score b{font-size:44px;line-height:1;color:var(--brand)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:14px}
.stat{background:var(--bg);border-radius:10px;padding:10px 6px;text-align:center}
.stat b{display:block;font-size:20px}
.stat span{font-size:12px;color:var(--muted)}
.stat.ok b{color:var(--ok)} .stat.bad b{color:var(--bad)}
.rank{margin-top:12px;padding:12px;border-radius:12px;background:#fff7e6;border:1px solid #f3d9a6}
.bar{height:6px;background:#eef2f3;border-radius:6px;overflow:hidden;margin-top:4px}
.bar i{display:block;height:100%;background:var(--brand2)}
.bar i.neg{background:var(--bad)}
.exp{font-size:14px;background:var(--bg);border-left:3px solid var(--brand2);padding:8px 10px;border-radius:6px;margin-top:4px}
.rv{border-bottom:1px solid var(--line);padding:14px 0}
.rv:last-child{border-bottom:0}
.rv .qtext{font-size:16px;margin-bottom:10px}
.rv .opt{padding:9px 10px;font-size:15px;margin-bottom:6px}
.tag{font-size:12px;font-weight:600;border-radius:6px;padding:1px 7px}
.tag.ok{background:var(--okbg);color:var(--ok)} .tag.bad{background:var(--badbg);color:var(--bad)} .tag.skip{background:#eef2f3;color:var(--muted)}

.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:10px 16px;border-radius:10px;font-size:14px;z-index:60;max-width:90vw}
.modal{position:fixed;inset:0;z-index:50;background:rgba(10,30,38,.5);display:flex;align-items:center;justify-content:center;padding:16px}
.modal .card{max-width:420px;width:100%;margin:0}

@media (min-width:640px){
  .hero h1{font-size:34px}
  .sheet{align-items:center}
  .sheet .panel{border-radius:18px}
}

.brandrow{display:flex;align-items:center;gap:10px;font-size:15px}
.logo{width:52px;height:52px;border-radius:50%;box-shadow:0 0 0 2px rgba(255,255,255,.25)}
.pill.gold{background:#fdf3e1;color:var(--gold)}
.btn.gold{background:linear-gradient(135deg,#e8a33d,#d4892a);color:#241500}
.pkg{border:1.5px solid #f0d49c;background:linear-gradient(180deg,#fffaf0,#fff)}
.pkg.on{border-color:var(--ok);background:var(--okbg)}
.price{display:flex;align-items:baseline;gap:6px;margin:2px 0}
.price b{font-size:30px;color:var(--brand)}
.price s{color:var(--muted)}
h3.sect{margin:22px 4px 10px;font-size:17px}
.card.dim{opacity:.62}
details.card summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}
details.card summary::after{content:"▾";color:var(--muted)}
details[open].card summary::after{content:"▴"}
details.card .card{box-shadow:none;margin-bottom:10px}
.paybox{display:flex;justify-content:space-between;align-items:center;background:var(--bg);border-radius:10px;padding:10px 12px;margin-top:8px}
.mono{font-variant-numeric:tabular-nums;letter-spacing:.5px;font-size:18px}
input.mono{font-size:16px;letter-spacing:1px}
.test-item h2{font-size:17px}

.why{display:grid;grid-template-columns:1fr;gap:10px;margin-bottom:10px}
@media (min-width:640px){.why{grid-template-columns:1fr 1fr}}
.why .card{margin:0}
.whyc{display:flex;gap:12px;align-items:flex-start}
.whyc .ico{font-size:24px;line-height:1.2}
.card.note{background:#f6faf9;border-style:dashed;color:var(--muted)}
.author{border:1.5px solid #f0d49c}
.alogo{width:56px;height:56px;border-radius:50%}
.pill.big{font-size:13px;padding:4px 10px}
.hl{display:inline-block;margin-top:6px;background:rgba(232,163,61,.2);color:#ffd892;padding:2px 10px;border-radius:999px;font-weight:600}

/* ===== PDF answer sheet ===== */
#printArea{display:none}
#printArea.render{display:block;position:fixed;left:-12000px;top:0;width:760px;background:#fff;z-index:-1}
.sheetdoc{font-size:12px;color:#111;line-height:1.5;background:#fff;padding:4px 6px}
.sheetdoc .phead{display:flex;gap:10px;align-items:center;border-bottom:2px solid #09202e;padding-bottom:6px;margin-bottom:8px}
.sheetdoc .phead img{width:44px;height:44px;border-radius:50%}
.sheetdoc .pb{font-weight:700;font-size:15px;color:#09202e}
.sheetdoc h1{font-size:16px;margin:6px 0 8px}
.sheetdoc h2{font-size:13px;margin:12px 0 6px;color:#09202e}
.sheetdoc table{width:100%;border-collapse:collapse;margin-bottom:6px}
.sheetdoc td,.sheetdoc th{border:1px solid #ccd;padding:3px 6px;text-align:left}
.sheetdoc th{background:#eef3f5}
.sheetdoc .pq{break-inside:avoid;page-break-inside:avoid;border-bottom:1px solid #dde;padding:6px 0}
.sheetdoc .ph{font-size:11px;color:#555;margin-bottom:2px}
.sheetdoc .ps{color:#12807a}
.sheetdoc .pt{font-weight:700;margin-left:6px}
.sheetdoc .pt.ok{color:#14866d} .sheetdoc .pt.bad{color:#c2410c} .sheetdoc .pt.skip{color:#777}
.sheetdoc .pqt{font-weight:600;margin-bottom:2px}
.sheetdoc .po{display:grid;grid-template-columns:1fr 1fr;gap:1px 12px}
.sheetdoc .po .c{color:#14866d;font-weight:700}
.sheetdoc .po .w{color:#c2410c;font-weight:600}
.sheetdoc .pe{margin-top:3px;background:#f3f7f8;padding:3px 6px;border-left:3px solid #12807a}
.sheetdoc .pend{text-align:center;color:#777;margin-top:12px}
@media print{
  @page{size:A4;margin:14mm 12mm 16mm}
  body.printing > *:not(#printArea){display:none!important}
  body.printing #printArea{display:block;position:static;width:auto}
}
.pdfprog{position:fixed;inset:0;z-index:70;background:rgba(10,30,38,.55);display:flex;align-items:center;justify-content:center;padding:16px}
.pdfprog .card{max-width:340px;text-align:center}
.spin{width:36px;height:36px;border:4px solid #dfe9ec;border-top-color:var(--brand2);border-radius:50%;margin:6px auto 10px;animation:sp 1s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
/* ===== exam view toggle ===== */
.viewtog{display:flex;background:#e7eef0;border-radius:10px;padding:3px;gap:3px;margin:0 auto 10px;max-width:360px}
.viewtog button{flex:1;border:0;background:transparent;border-radius:8px;padding:7px 6px;font-size:13px;color:var(--muted);font-weight:600}
.viewtog button.on{background:#fff;color:var(--brand);box-shadow:0 1px 2px rgba(0,0,0,.08)}
.allq .qcard{margin-bottom:12px;scroll-margin-top:120px}
.allq .qcard .navrow{margin-top:0}
.flagmini{border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:2px 10px;font-size:12px;color:var(--muted)}
.flagmini.on{background:var(--revbg);color:var(--rev);border-color:var(--rev)}

/* ===== live routine ===== */
.pill.red{background:#fde8e4;color:#c2410c}
.card.islive{border:1.5px solid #f3a48b;box-shadow:0 0 0 3px #fdeee9}
.routine .livebox{display:flex;gap:10px;align-items:center;background:#fdeee9;border-radius:12px;padding:10px 12px;margin-top:10px}
.routine .livebox>div{flex:1}
.dot{width:10px;height:10px;border-radius:50%;background:#e0412b;animation:pulse 1.2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(224,65,43,.6)}100%{box-shadow:0 0 0 10px rgba(224,65,43,0)}}
.routine .nextbox{background:var(--bg);border-radius:12px;padding:10px 12px;margin-top:10px}
.cdown{font-weight:700;color:var(--brand2);margin-top:2px}
.livenote{color:#c2410c}

/* ===== offer countdown ===== */
.otimer{background:#fff3ee;border:1px solid #f6c7b5;border-radius:12px;padding:10px 12px;margin:10px 0 2px;color:#9a3412;width:100%}
.otr{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin:6px 0}
.otr div{background:#fff;border-radius:8px;text-align:center;padding:6px 0;box-shadow:0 1px 0 #f6c7b5}
.otr b{display:block;font-size:22px;line-height:1.1;color:#c2410c;font-variant-numeric:tabular-nums}
.otr span{font-size:11px;color:#9a3412}
.pkg .row.between > div:first-child{flex:1;min-width:220px}

/* ===== products / ebook ===== */
.prods{display:flex;flex-direction:column;gap:10px}
.prod{position:relative;text-align:left;background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:12px;color:var(--ink)}
.prod.on{border-color:var(--gold);background:#fffaf0;box-shadow:0 0 0 3px #fdf0d5}
.prod .pn{font-weight:700}
.prod .pp{margin-top:4px}
.prod .pp b{font-size:20px;color:var(--brand)}
.prod .pp s{color:var(--muted)}
.card.ebook{display:flex;flex-wrap:wrap;gap:12px;align-items:center;border:1.5px solid #f0d49c;background:linear-gradient(90deg,#fffaf0,#fff)}
.card.ebook.on{border-color:var(--ok);background:var(--okbg)}
.eico{font-size:34px}

/* ebook preview */
.eprev{flex-basis:100%;min-width:0;max-width:100%;border-top:1px dashed #f0d49c;padding-top:10px}
.estrip{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;scroll-snap-type:x mandatory}
.eth{flex:0 0 auto;width:96px;border:0;background:none;padding:0;cursor:pointer;scroll-snap-align:start;text-align:center;font:inherit}
.eth img{width:96px;height:136px;object-fit:cover;object-position:top;border-radius:6px;border:1px solid var(--line);box-shadow:0 2px 6px #0001;display:block;background:#fff}
.eth span{display:block;font-size:11px;color:var(--muted);margin-top:3px;line-height:1.2}
#pvbox{position:fixed;inset:0;background:#09202ef2;z-index:1000;display:flex;flex-direction:column;color:#fff}
.pvbar{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;font-weight:600}
.pvx{background:#ffffff22;border:0;color:#fff;font-size:18px;width:36px;height:36px;border-radius:50%;cursor:pointer}
.pvimg{flex:1;min-height:0;overflow:auto;display:block;text-align:center;padding:0 8px}
.pvimg img{width:100%;max-width:820px;height:auto;border-radius:6px;background:#fff}
.pvnav{display:flex;gap:8px;justify-content:center;padding:10px;flex-wrap:wrap}
.pvnav .btn.ghost{color:#fff;border-color:#ffffff55}

/* personal routine */
.myrbox{display:flex;gap:10px;align-items:center;justify-content:space-between;margin-top:10px;padding:10px;border-radius:10px;background:#f2f7ff;border:1px solid #d6e4f7}
.myq{display:grid;gap:8px;padding:12px;border:1px solid var(--line);border-radius:12px;background:#fafcfd}
.myq label{display:flex;justify-content:space-between;align-items:center;gap:10px}
.myq input,.myq select,.myrow input{font:inherit;padding:6px 8px;border:1px solid var(--line);border-radius:8px;background:#fff;max-width:60%}
.myrows{display:grid;gap:6px}
.myrow{display:flex;gap:8px;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px dashed var(--line)}
.myrow input{max-width:52%;font-size:13px}