:root{
  --ink:#0F172A; --paper:#FFFFFF; --paper-2:#F8FAFC; --hl:#F59E0B;
  --indigo:#3B82F6; --indigo-dk:#2563EB; --muted:#64748B; --line:#E2E8F0;
  --good:#10B981; --warn:#B45309; --radius:4px;
  --accent-soft:#DBEAFE;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Geist',-apple-system,system-ui,sans-serif;background:var(--paper);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--indigo);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
h1,h2,h3,h4{font-family:'Fraunces',Georgia,serif;font-weight:600;letter-spacing:-.02em;line-height:1.15}

/* header */
header{border-bottom:1px solid var(--line);background:var(--paper);position:sticky;top:0;z-index:50}
/* tiered desktop: slim secondary "More" strip above the bold primary row */
.nav-top{background:var(--paper-2);border-bottom:1px solid var(--line)}
.nav-top .wrap{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:6px 18px;padding:7px 0}
.nav-top-lbl{font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:#94A3B8;margin-right:-6px}
.nav-top a{color:var(--muted);font-size:12.5px;font-weight:500;white-space:nowrap}
.nav-top a:hover{color:var(--indigo);text-decoration:none}
.nav{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-family:'Fraunces',serif;font-weight:600;font-size:21px;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand .mark{width:34px;height:34px;border-radius:4px;background:var(--ink);color:var(--paper);display:grid;place-items:center;font-family:'JetBrains Mono',monospace;font-weight:700;font-size:15px;position:relative}
.brand .mark .dot{position:absolute;right:-4px;bottom:-2px;width:7px;height:7px;border-radius:50%;background:var(--hl)}
nav ul{display:flex;gap:22px;list-style:none;align-items:center}
nav ul a{color:var(--ink);font-size:15px;font-weight:600}
nav ul a:hover{color:var(--indigo);text-decoration:none}
.hamb{display:none;background:none;border:0;font-size:24px;cursor:pointer;color:var(--ink)}
.mobile-nav{display:none;border-top:1px solid var(--line);padding:8px 24px 18px}
.mobile-nav.open{display:block}
.mob-grp{font-size:11px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--muted);margin:16px 0 8px}
.mob-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.mob-grid a{display:block;border:1px solid var(--line);border-radius:6px;padding:11px 12px;color:var(--ink);font-size:13.5px;font-weight:600}
.mob-grid a:hover{border-color:var(--indigo);text-decoration:none}
/* below this width: hide tiered rows, show hamburger + grouped drawer */
@media(max-width:860px){
  .nav-top{display:none}
  .nav-primary{display:none}
  .hamb{display:block}
}

/* breadcrumb */
.crumb{font-size:13px;color:var(--muted);padding:18px 0 0}
.crumb a{color:var(--muted)}

/* hero / page head */
.phead{padding:40px 0 26px}
.eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--indigo-dk);background:var(--accent-soft);padding:5px 11px;border-radius:100px;margin-bottom:16px}
.phead h1{font-size:38px;margin-bottom:14px}
.phead h1 .mk{background:linear-gradient(transparent 62%,var(--hl) 62%);padding:0 2px}
.phead .lede{font-size:17px;color:#334155;max-width:60ch}

/* calculator card */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 4px 24px rgba(15,23,42,.05);overflow:hidden;margin:8px 0 28px}
.card-top{display:flex;align-items:center;justify-content:space-between;padding:15px 20px;border-bottom:1px solid var(--line);background:var(--paper-2)}
.card-top h2{font-family:'Geist',sans-serif;font-size:14px;font-weight:600}
.scale-pick{font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--muted)}
select,input{font:inherit}
.scale-pick select{font-size:12px;color:var(--ink);border:1px solid var(--line);border-radius:4px;padding:3px 6px;background:#fff;cursor:pointer}
.card-body{display:grid;grid-template-columns:1fr 172px}
.rows{padding:14px 18px 10px}
.row{display:grid;grid-template-columns:1fr 64px 92px;gap:8px;margin-bottom:8px}
.row.wb{grid-template-columns:1fr 64px 92px 96px}
.row input,.row select{font-size:13.5px;padding:8px 10px;border:1px solid var(--line);border-radius:4px;background:var(--paper);color:var(--ink);width:100%}
.row input:focus,.row select:focus{outline:none;border-color:var(--indigo);box-shadow:0 0 0 3px var(--accent-soft)}
.row select{cursor:pointer}
.rowbtns{display:flex;gap:14px;margin-top:4px;align-items:center}
.linkbtn{font-size:13px;font-weight:500;color:var(--indigo);background:none;border:0;cursor:pointer;padding:6px 0}
.saved-ind{font-size:12px;font-weight:600;color:var(--good);font-family:'JetBrains Mono',monospace;opacity:0;transition:opacity .25s;margin-left:auto}
.saved-ind.on{opacity:1}
.dial-pane{border-left:1px solid var(--line);background:var(--paper-2);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:18px 14px;gap:8px}
.dial{position:relative;width:122px;height:122px}
.dial svg{transform:rotate(-90deg)}
.dial .val{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.dial .num{font-family:'JetBrains Mono',monospace;font-weight:700;font-size:30px;color:var(--ink);line-height:1}
.dial .of{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--muted);margin-top:3px}
.dial-label{font-size:12px;color:var(--muted);text-align:center}
.dial-label b{color:var(--ink);font-weight:600}
.dial-honor{font-size:11px;font-weight:600;color:var(--good);min-height:14px}

/* simple converter */
.conv{display:flex;align-items:flex-end;gap:14px;flex-wrap:wrap;padding:20px}
.conv .field{display:flex;flex-direction:column;gap:5px}
.conv label{font-size:12px;color:var(--muted);font-weight:500}
.conv input,.conv select{padding:9px 11px;border:1px solid var(--line);border-radius:4px;background:var(--paper);min-width:120px}
.conv .arrow{font-size:20px;color:var(--muted);padding-bottom:8px}
.conv .out{font-family:'JetBrains Mono',monospace;font-weight:700;font-size:26px;color:var(--indigo)}

/* formula provenance block */
.prov{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:13px;color:var(--muted);background:var(--paper-2);border:1px solid var(--line);border-radius:4px;padding:12px 16px;margin:0 0 18px}
.prov b{color:var(--ink);font-weight:600}
.prov .formula{font-family:'JetBrains Mono',monospace;color:var(--indigo-dk)}
.badge{display:inline-block;font-size:11px;font-weight:600;letter-spacing:.03em;text-transform:uppercase;padding:2px 8px;border-radius:6px}
.badge.verified{background:#D1FAE5;color:var(--good)}
.badge.verify{background:#FEF3C7;color:var(--warn)}
.badge.blocked{background:#FCEBEB;color:#A32D2D}
.disclaimer{font-size:12.5px;color:var(--muted);margin-top:10px}

/* prose */
.prose{max-width:68ch;margin:8px 0 30px}
.prose p{margin-bottom:14px}
.prose h2{font-size:25px;margin:30px 0 12px}
.prose h3{font-size:19px;margin:22px 0 8px}
.prose ul{margin:0 0 14px 20px}
.prose li{margin-bottom:6px}

/* tool grid */
.sec-head{display:flex;align-items:baseline;justify-content:space-between;margin:48px 0 22px;gap:16px;flex-wrap:wrap}
.sec-head h2{font-size:27px}
.sec-head p{color:var(--muted);font-size:14px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.tcard{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;transition:border-color .15s,transform .15s}
.tcard:hover{border-color:var(--indigo);transform:translateY(-2px);text-decoration:none}
.tcard .ic{width:38px;height:38px;border-radius:4px;background:var(--paper-2);display:grid;place-items:center;font-family:'JetBrains Mono',monospace;font-weight:700;font-size:14px;color:var(--ink);margin-bottom:14px}
.tcard.india .ic{background:#FFF6DC}
.tcard h3{font-family:'Geist';font-size:16px;font-weight:600;margin-bottom:5px}
.tcard p{font-size:13.5px;color:var(--muted)}
.tcard .tag{display:inline-block;margin-top:12px;font-size:11px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--indigo-dk)}
.tcard.india .tag{color:#8A6500}
.tcard.abroad .ic{background:#E8F0FE}
.tcard.abroad .tag{color:#1A56C4}

/* trust strip */
.strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff;margin-top:18px}
.strip .wrap{display:flex;gap:32px;flex-wrap:wrap;justify-content:center;padding:16px 24px;font-size:13.5px;color:var(--muted)}
.strip span{display:flex;align-items:center;gap:7px}
.tick{width:16px;height:16px;border-radius:50%;background:#D1FAE5;color:var(--good);display:grid;place-items:center;font-size:10px;font-weight:700}

/* footer */
footer{margin-top:54px;border-top:1px solid var(--line);background:var(--paper-2)}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1fr 1fr;gap:30px;padding:44px 0 30px}
.foot h4{font-family:'Geist';font-size:12.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:14px}
.foot ul{list-style:none}
.foot li{margin-bottom:9px}
.foot a{color:var(--ink);font-size:14px}
.foot .by{font-size:13.5px;color:var(--muted);max-width:30ch;margin-top:12px}
.legal{border-top:1px solid var(--line);padding:18px 0;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px;color:var(--muted)}

@media (max-width:860px){
  .phead h1{font-size:31px}
  .grid{grid-template-columns:1fr 1fr}
  .foot{grid-template-columns:1fr 1fr}
  nav ul{display:none}
  .hamb{display:block}
}
@media (max-width:560px){
  .grid{grid-template-columns:1fr}
  .card-body{grid-template-columns:1fr}
  .dial-pane{border-left:0;border-top:1px solid var(--line);flex-direction:row;justify-content:space-around}
  .foot{grid-template-columns:1fr}
}

/* professional-school split row (4 columns) */
.row.pro-split{grid-template-columns:1fr 92px 64px 110px}

/* regulation table (SRM-style multi-batch) */
.regtable{width:100%;border-collapse:collapse;margin:14px 0 18px;font-size:14px}
.regtable th,.regtable td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.regtable th{font-family:'Geist',sans-serif;font-size:12px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}
.regtable td.formula{font-family:'JetBrains Mono',monospace;color:var(--indigo-dk);white-space:nowrap}
.regtable tr:hover td{background:var(--paper-2)}

/* result export actions (Copy results / Download PDF) */
.result-actions{display:flex;gap:10px;flex-wrap:wrap;padding:14px 18px 16px;border-top:1px solid var(--line);background:var(--paper-2)}
.ra-btn{font-family:'Geist',sans-serif;font-size:13px;font-weight:600;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:4px;padding:8px 14px;cursor:pointer;transition:border-color .15s,background .15s,color .15s}
.ra-btn:hover{border-color:var(--indigo);color:var(--indigo-dk)}
.ra-btn.ra-pdf{background:var(--indigo);border-color:var(--indigo);color:#fff;box-shadow:0 1px 4px rgba(59,130,246,.25)}
.ra-btn.ra-pdf:hover{background:var(--indigo-dk);border-color:var(--indigo-dk);color:#fff;box-shadow:0 2px 8px rgba(59,130,246,.35)}

/* FAQ page */
.faq-toc{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 28px}
.faq-toc a{font-size:13px;font-weight:600;color:var(--indigo-dk);background:var(--accent-soft);padding:7px 13px;border-radius:100px;text-decoration:none}
.faq-toc a:hover{background:var(--indigo);color:#fff}
.faq-sec{margin:0 0 36px;scroll-margin-top:84px}
.faq-sec h2{font-size:22px;margin-bottom:6px}
.faq-sec .seccount{font-size:13px;color:var(--muted);margin-bottom:14px}
details.faq{border:1px solid var(--line);border-radius:var(--radius);margin-bottom:8px;background:#fff;overflow:hidden}
details.faq[open]{border-color:var(--indigo)}
details.faq summary{cursor:pointer;padding:14px 18px;font-weight:600;font-size:15px;color:var(--ink);list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:'+';font-family:'JetBrains Mono',monospace;font-size:18px;color:var(--indigo);flex:0 0 auto}
details.faq[open] summary::after{content:'\2212'}
details.faq summary:hover{color:var(--indigo-dk)}
details.faq .ans{padding:0 18px 16px;color:var(--ink-soft,#334155);font-size:14.5px;line-height:1.65}
details.faq .ans a{color:var(--indigo);font-weight:500}

/* guides */
.guide-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px;margin-bottom:8px}
.guide-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;transition:border-color .15s,transform .15s}
.guide-card:hover{border-color:var(--indigo);transform:translateY(-2px);text-decoration:none}
.guide-card h3{font-size:16px;font-weight:600;margin-bottom:6px;color:var(--ink);line-height:1.3}
.guide-card p{font-size:13.5px;color:var(--muted);line-height:1.5}
.guide-body{max-width:760px}
.guide-body h2{font-size:20px;margin:26px 0 10px}
.guide-body p{margin-bottom:14px;font-size:15.5px;line-height:1.7}
.guide-body ul,.guide-body ol{margin:0 0 14px 22px}
.guide-body li{margin-bottom:6px;line-height:1.6}
.related{max-width:760px;margin:36px 0 0;padding:20px 0 0;border-top:1px solid var(--line)}
.related h2{font-size:16px;margin-bottom:10px}
.related ul{list-style:none;display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.related a{font-weight:500}

/* university search filter */
.unisearch{margin:0 0 14px}
.unisearch-input{width:100%;font-family:'Geist',sans-serif;font-size:15px;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:11px 14px}
.unisearch-input:focus{outline:none;border-color:var(--indigo);box-shadow:0 0 0 3px var(--accent-soft)}
.unisearch-input::placeholder{color:var(--muted)}
.unisearch-count{font-size:12.5px;color:var(--muted);margin:6px 2px 0;min-height:1em;font-family:'JetBrains Mono',monospace}
.unilist{margin:0}
.unisearch-empty{color:var(--muted);font-size:14px;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;margin:8px 0 0}

/* target / final-grade assessment line */
.target-detail{margin:0;padding:12px 18px;font-size:14px;line-height:1.5;border-top:1px solid var(--line);color:var(--ink-soft,#334155)}
.target-detail:empty{display:none}
.target-detail.fb-comfortable,.target-detail.fb-achieved{background:#ECFDF5;color:#047857}
.target-detail.fb-moderate{background:var(--accent-soft);color:var(--indigo-dk)}
.target-detail.fb-hard{background:#FFFBEB;color:#B45309}
.target-detail.fb-veryhard,.target-detail.fb-impossible{background:#FEF2F2;color:#B91C1C}

/* grade-calculator tabs + course-grade widget */
.gc-tabs .tabbar{display:flex;gap:6px;margin-bottom:14px}
.tabbtn{font-family:'Geist',sans-serif;font-size:14px;font-weight:600;color:var(--muted);background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:9px 16px;cursor:pointer}
.tabbtn.active{color:#fff;background:var(--indigo);border-color:var(--indigo)}
.gc-row{display:grid;grid-template-columns:1fr 90px 90px;gap:8px}
.gc-letter{font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--muted);margin-top:6px;min-height:1em;text-align:center}

/* university state/country label in directory lists */
.unistate{font-size:12px;color:var(--muted);font-family:'JetBrains Mono',monospace}
.unilist{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:2px 18px}
.unilist li{padding:8px 2px;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:2px}
.unilist li[hidden]{display:none}
.unilist li a{font-weight:500;text-decoration:none;color:var(--ink)}
.unilist li a:hover{color:var(--indigo);text-decoration:underline}
.uni-teaser{margin:28px 0;padding:18px 20px;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius)}
.uni-teaser h3{font-family:'Geist';font-size:16px;font-weight:600;margin:0 0 6px}
.uni-teaser p{margin:0 0 10px;font-size:14px;color:var(--ink-soft,#334155)}
.uni-teaser-link{font-family:'Geist';font-weight:600;font-size:14px;color:var(--indigo);text-decoration:none}
.uni-teaser-link:hover{text-decoration:underline}

/* Related-tools block on calculator pages */
.related{margin:48px 0 8px;padding-top:32px;border-top:1px solid var(--line)}
.related h2{font-family:'Geist';font-size:18px;font-weight:600;margin-bottom:16px}
.rel-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.rel-card{display:block;padding:16px;border:1px solid var(--line);border-radius:8px;background:var(--paper);transition:border-color .15s,transform .15s;text-decoration:none}
.rel-card:hover{border-color:var(--indigo);transform:translateY(-2px)}
.rel-card h4{font-family:'Geist';font-size:14.5px;font-weight:600;color:var(--ink);margin-bottom:3px}
.rel-card p{font-size:12.5px;color:var(--muted);margin:0}
.net-card h4{color:var(--indigo);text-decoration:underline;text-underline-offset:2px}
.net-card:hover h4{color:var(--indigo-dk)}
.ad-banner{display:flex;justify-content:center;align-items:center;padding:10px 16px;background:var(--paper);border-bottom:1px solid var(--line)}
.ad-banner-inner{margin:0 auto}
.ad-banner-inner.desktop{min-height:90px;width:728px;max-width:100%}
.ad-banner-inner.mobile{display:none;min-height:50px;width:320px;max-width:100%}
@media(max-width:860px){
  .ad-banner-inner.desktop{display:none}
  .ad-banner-inner.mobile{display:block}
}

/* Waterloo percentage-average widget rows */
.wloo-row{display:grid;grid-template-columns:1fr 90px 90px;gap:8px;align-items:center}
.wloo-row .wmark,.wloo-row .wunit{width:100%}
.wloo-head{font-size:12px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.03em}
.wloo-head span:first-child{text-align:left}