@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,500;0,6..72,600;0,6..72,700;1,6..72,500&family=Inter:wght@400;500;600;700;800&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

/* ============================================================
   TOKENS
   ============================================================ */
:root{
  --paper:#F7F8FA;
  --paper-raised:#FFFFFF;
  --ink:#10151C;
  --ink-soft:#4B5563;
  --ink-faint:#8B93A1;
  --line:#E4E7EC;
  --line-strong:#D3D7DE;
  --brand:#1E4FD8;
  --brand-ink:#12308A;
  --brand-soft:#EAF0FE;
  --seal:#B9791A;
  --seal-soft:#FBF1DF;
  --danger:#C6392F;
  --success:#1E7A46;
  --shadow: 0 1px 2px rgba(16,21,28,.04);
  --shadow-lift: 0 12px 28px rgba(16,21,28,.10);
  --radius-sm:6px;
  --radius:10px;
  --radius-lg:16px;
  --font-serif:'Newsreader', Georgia, serif;
  --font-body:'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:'IBM Plex Mono', 'SF Mono', Consolas, monospace;
  --header-h:64px;
  --maxw:1180px;
}

html[data-theme="dark"]{
  --paper:#0B0D12;
  --paper-raised:#12151C;
  --ink:#E7EAEF;
  --ink-soft:#A2ABB8;
  --ink-faint:#6B7280;
  --line:#232833;
  --line-strong:#2E3542;
  --brand:#5B8DEF;
  --brand-ink:#BBD1FA;
  --brand-soft:#152238;
  --seal:#E3A63E;
  --seal-soft:#241C0E;
  --danger:#E06759;
  --success:#4FC787;
  --shadow: 0 1px 2px rgba(0,0,0,.3);
  --shadow-lift: 0 16px 32px rgba(0,0,0,.45);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  transition:background .25s ease, color .25s ease;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:600;line-height:1.15;margin:0;color:var(--ink);}
p{margin:0 0 1em;}
.tabnum{font-variant-numeric:tabular-nums;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* ============================================================
   TOP UTILITY BAR (clock strip)
   ============================================================ */
.util-bar{
  background:var(--ink);
  color:#fff;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.02em;
}
html[data-theme="dark"] .util-bar{background:#05070A;}
.util-bar .container{display:flex;align-items:center;justify-content:space-between;height:32px;gap:16px;overflow:hidden;}
.util-clocks{display:flex;gap:18px;white-space:nowrap;}
.util-clocks span{opacity:.92;}
.util-clocks b{font-weight:600;color:#DDE6FF;}
.util-tagline{opacity:.75;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:none;}
@media(min-width:720px){.util-tagline{display:block;}}

/* ============================================================
   HEADER / NAV
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.header-row{height:var(--header-h);display:flex;align-items:center;gap:12px;justify-content:space-between;overflow:hidden;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:1;min-width:0;overflow:hidden;}
.brand svg{width:34px;height:34px;display:block;flex-shrink:0;}
.brand-text{font-family:var(--font-serif);font-weight:700;font-size:19px;color:var(--ink);line-height:1.1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.brand-text small{display:block;font-family:var(--font-mono);font-weight:500;font-size:10px;letter-spacing:.08em;color:var(--seal);}
@media(max-width:460px){.brand-text small{display:none;}}
@media(max-width:360px){.brand-text{font-size:16px;}}

.primary-nav{display:none;}
@media(min-width:1000px){
  .primary-nav{display:flex;align-items:center;gap:2px;flex:1;justify-content:center;}
}
.primary-nav > li{position:relative;}
.primary-nav a.nav-link, .primary-nav button.nav-link{
  display:flex;align-items:center;gap:5px;
  font-size:14.5px;font-weight:500;color:var(--ink-soft);
  padding:10px 12px;border-radius:var(--radius-sm);
  background:none;border:none;cursor:pointer;font-family:var(--font-body);
  transition:color .15s ease, background .15s ease;
}
.primary-nav a.nav-link:hover, .primary-nav button.nav-link:hover,
.primary-nav li.is-open > .nav-link{color:var(--ink);background:var(--brand-soft);color:var(--brand-ink);}
.nav-link .chev{width:11px;height:11px;transition:transform .18s ease;}
li.is-open .nav-link .chev{transform:rotate(180deg);}
.primary-nav > li.has-dropdown{display:flex;align-items:center;}
.nav-caret{background:none;border:none;cursor:pointer;color:var(--ink-faint);padding:10px 8px 10px 2px;display:flex;align-items:center;border-radius:var(--radius-sm);}
.nav-caret:hover{color:var(--brand-ink);}
.nav-caret svg{width:11px;height:11px;transition:transform .18s ease;}
li.is-open .nav-caret svg{transform:rotate(180deg);}

.dropdown{
  position:absolute;top:calc(100% + 8px);left:0;min-width:200px;
  background:var(--paper-raised);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-lift);
  padding:6px;opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .16s ease, transform .16s ease, visibility .16s;
}
li.is-open .dropdown{opacity:1;visibility:visible;transform:translateY(0);}
.dropdown a{display:block;padding:9px 12px;border-radius:var(--radius-sm);font-size:14px;color:var(--ink-soft);}
.dropdown a:hover{background:var(--brand-soft);color:var(--brand-ink);}

.header-actions{display:flex;align-items:center;gap:4px;flex-shrink:0;}
.icon-btn{
  width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
  border-radius:50%;border:1px solid transparent;background:none;cursor:pointer;color:var(--ink-soft);
  transition:background .15s ease, color .15s ease, border-color .15s ease;
}
.icon-btn:hover{background:var(--brand-soft);color:var(--brand-ink);}
.icon-btn svg{width:18px;height:18px;}
#theme-toggle .sun{display:none;}
html[data-theme="dark"] #theme-toggle .moon{display:none;}
html[data-theme="dark"] #theme-toggle .sun{display:block;}

/* ---- Google Translate widget: compact + themed, never allowed to blow
   up the header width (that was the actual cause of the hamburger being
   pushed off-screen and unreachable on mobile). ---- */
#google_translate_element{flex:0 0 auto;max-width:78px;overflow:hidden;}
#google_translate_element .goog-te-gadget{font-size:0;color:transparent;line-height:0;}
#google_translate_element .goog-te-gadget > span,
#google_translate_element .goog-te-gadget img{display:none !important;}
#google_translate_element select.goog-te-combo{
  font-size:12px !important;
  font-family:var(--font-body) !important;
  color:var(--ink-soft) !important;
  background:var(--paper-raised) !important;
  border:1px solid var(--line) !important;
  border-radius:20px !important;
  padding:6px 6px !important;
  max-width:78px;
  cursor:pointer;
  height:32px;
}
body > .skiptranslate.goog-te-banner-frame,
iframe.goog-te-banner-frame{display:none !important;}
body{top:0 !important;position:static !important;}
@media(max-width:520px){#google_translate_element{display:none;}}

.hamburger{
  display:inline-flex;flex-shrink:0;align-items:center;justify-content:center;
  width:36px;height:36px;
  border:none;background:none;padding:0;margin:0;
  -webkit-appearance:none;appearance:none;
  border-radius:50%;cursor:pointer;
  transition:background .15s ease;
}
.hamburger:hover{background:var(--brand-soft);}
@media(min-width:1000px){.hamburger{display:none;}}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink);margin:3px auto;border-radius:2px;transition:transform .2s ease, opacity .2s ease;}

/* Mobile menu panel — a true full-screen overlay, not offset against the
   header's height, so it can never misalign depending on scroll position */
.mobile-nav{
  display:none;
  position:fixed;
  top:0;right:0;bottom:0;left:0;
  width:100%;height:100%;
  background:var(--paper);
  z-index:200;overflow-y:auto;-webkit-overflow-scrolling:touch;
  padding:0 20px 40px;
}
.mobile-nav.open{display:block;}
.mobile-nav-top{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);border-bottom:1px solid var(--line);margin-bottom:8px;}
.mobile-nav-top .brand{overflow:visible;}
.mobile-nav details{border-bottom:1px solid var(--line);}
.mobile-nav summary{padding:16px 4px;font-weight:600;font-size:15.5px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;}
.mobile-nav summary::-webkit-details-marker{display:none;}
.mobile-nav a.plain{display:block;padding:16px 4px;font-weight:600;font-size:15.5px;border-bottom:1px solid var(--line);}
.mobile-nav .sub-links{padding:0 0 14px 12px;display:flex;flex-direction:column;gap:2px;}
.mobile-nav .sub-links a{padding:8px 4px;color:var(--ink-soft);font-size:14.5px;}

/* ============================================================
   HERO
   ============================================================ */
.hero{padding:64px 0 48px;border-bottom:1px solid var(--line);}
.hero-grid{display:grid;gap:36px;}
@media(min-width:900px){.hero-grid{grid-template-columns:1.3fr .9fr;align-items:end;}}
.eyebrow-mark{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12px;color:var(--seal);border:1px solid var(--seal);border-radius:20px;padding:4px 11px 4px 8px;margin-bottom:18px;}
.eyebrow-mark .dot{width:6px;height:6px;border-radius:50%;background:var(--seal);animation:pulse 1.8s ease-in-out infinite;}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.35;}}
.hero h1{font-size:clamp(32px,5vw,52px);letter-spacing:-.01em;max-width:15ch;}
.hero h1 .hl{position:relative;white-space:nowrap;}
.hero-sub{font-size:17px;color:var(--ink-soft);max-width:46ch;margin:18px 0 26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.btn{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--font-body);font-weight:600;font-size:14.5px;
  padding:12px 20px;border-radius:var(--radius-sm);cursor:pointer;border:1px solid transparent;transition:transform .12s ease, background .15s ease, border-color .15s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-ink);}
.btn-ghost{background:var(--paper-raised);color:var(--ink);border-color:var(--line-strong);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-ink);}

.hero-card{
  background:var(--paper-raised);border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow);
}
.hero-card .hc-title{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:14px;}
.hero-clock-row{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px dashed var(--line);}
.hero-clock-row:last-child{border-bottom:none;}
.hero-clock-row .zone{font-size:13px;color:var(--ink-soft);}
.hero-clock-row .time{font-family:var(--font-mono);font-weight:600;font-size:16px;}

/* ---- Animated logo card (replaces the old oversized world-clock card) ---- */
.hero-logo-card{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:38px 24px;}
.hero-logo-anim{width:96px;height:96px;position:relative;animation:logoFloat 3.6s ease-in-out infinite;}
.hero-logo-anim::before{content:"";position:absolute;inset:-16px;border-radius:50%;
  background:radial-gradient(circle, rgba(30,79,216,.20), transparent 70%);animation:logoGlow 3.6s ease-in-out infinite;}
.hero-logo-anim svg{position:relative;width:100%;height:100%;filter:drop-shadow(0 10px 18px rgba(30,79,216,.22));}
.hero-logo-anim .tassel-part{transform-box:fill-box;transform-origin:top center;animation:tasselSwing 2.4s ease-in-out infinite;}
@keyframes logoFloat{0%,100%{transform:translateY(0);}50%{transform:translateY(-8px);}}
@keyframes logoGlow{0%,100%{opacity:.45;}50%{opacity:1;}}
@keyframes tasselSwing{0%,100%{transform:rotate(-7deg);}50%{transform:rotate(7deg);}}
.hero-logo-caption{margin-top:20px;font-family:var(--font-mono);font-size:12px;letter-spacing:.05em;color:var(--ink-faint);}
.hero-logo-caption strong{color:var(--ink-soft);}

/* ============================================================
   SECTION HEADINGS
   ============================================================ */
.section{padding:56px 0;}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:26px;border-bottom:1px solid var(--line);padding-bottom:14px;}
.section-head h2{font-size:26px;}
.section-head a{font-size:13.5px;font-weight:600;color:var(--brand);white-space:nowrap;}
.section-head a:hover{text-decoration:underline;}
.section-note{color:var(--ink-soft);font-size:15px;max-width:70ch;margin-bottom:26px;}

/* ============================================================
   LEDGER LISTS (latest posts columns — the site's signature device)
   ============================================================ */
.ledger-grid{display:grid;gap:0;}
@media(min-width:860px){.ledger-grid{grid-template-columns:repeat(3,1fr);gap:0;}}
.ledger-col{border-top:2px solid var(--ink);padding-top:16px;}
@media(min-width:860px){.ledger-col{border-left:1px solid var(--line);padding-left:26px;}
  .ledger-col:first-child{border-left:none;padding-left:0;}
  .ledger-col:not(:first-child){padding-right:0;}
  .ledger-col{padding-right:26px;}
}
.ledger-col + .ledger-col{margin-top:34px;}
@media(min-width:860px){.ledger-col + .ledger-col{margin-top:0;}}
.ledger-col h3{font-size:15px;font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.06em;margin-bottom:4px;}
.ledger-col .col-sub{font-size:12.5px;color:var(--ink-faint);margin-bottom:16px;display:block;}
.ledger-row{display:flex;gap:12px;padding:13px 0;border-bottom:1px solid var(--line);}
.ledger-row:last-child{border-bottom:none;}
.ledger-row .idx{font-family:var(--font-mono);font-size:12px;color:var(--seal);width:22px;flex-shrink:0;padding-top:2px;}
.ledger-row a{font-weight:600;font-size:14.5px;color:var(--ink);transition:color .12s ease;}
.ledger-row a:hover{color:var(--brand);}
.ledger-row .meta{display:block;font-family:var(--font-mono);font-size:11.5px;color:var(--ink-faint);margin-top:5px;}
.ledger-row .excerpt{display:block;color:var(--ink-soft);font-size:13px;margin-top:4px;}
.empty-note{color:var(--ink-faint);font-size:14px;padding:20px 0;}

/* ============================================================
   TOP UNIVERSITIES STRIP
   ============================================================ */
.rank-strip{display:flex;gap:0;overflow-x:auto;margin:0 -24px;padding:4px 24px 14px;scrollbar-width:thin;}
.rank-card{
  flex:0 0 220px;background:var(--paper-raised);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;margin-right:14px;transition:border-color .15s ease, transform .15s ease;
}
.rank-card:hover{border-color:var(--brand);transform:translateY(-2px);}
.rank-card .rank-no{font-family:var(--font-mono);font-size:22px;font-weight:600;color:var(--line-strong);}
.rank-card.top .rank-no{color:var(--seal);}
.rank-card h4{font-size:15.5px;margin:10px 0 4px;font-family:var(--font-body);font-weight:700;}
.rank-card .country{font-size:12.5px;color:var(--ink-faint);}

/* ============================================================
   ARTICLE / LONG-FORM CONTENT
   ============================================================ */
.prose{max-width:74ch;}
.prose h2{font-size:24px;margin:36px 0 12px;}
.prose h3{font-size:19px;margin:26px 0 10px;font-family:var(--font-body);font-weight:700;}
.prose p{color:var(--ink-soft);font-size:15.5px;}
.prose ul,.prose ol{color:var(--ink-soft);font-size:15.5px;margin:0 0 1em;padding-left:22px;}
.prose li{margin-bottom:6px;list-style:disc;}
.prose ol li{list-style:decimal;}
.prose strong{color:var(--ink);}
.prose a{color:var(--brand);text-decoration:underline;text-underline-offset:2px;}
.prose blockquote{border-left:3px solid var(--seal);padding:4px 0 4px 18px;color:var(--ink-soft);font-style:italic;margin:20px 0;}

.article-hero{padding:44px 0 30px;border-bottom:1px solid var(--line);}
.breadcrumb{font-size:13px;color:var(--ink-faint);margin-bottom:16px;}
.breadcrumb a{color:var(--ink-soft);}
.breadcrumb a:hover{color:var(--brand);}
.article-tag{display:inline-block;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.05em;text-transform:uppercase;background:var(--brand-soft);color:var(--brand-ink);padding:4px 10px;border-radius:20px;margin-bottom:14px;}
.article-hero h1{font-size:clamp(26px,4vw,40px);max-width:20ch;}
.article-meta{display:flex;gap:16px;flex-wrap:wrap;margin-top:16px;font-family:var(--font-mono);font-size:12.5px;color:var(--ink-faint);}
.share-row{display:flex;gap:8px;margin-top:26px;}
.share-btn{width:34px;height:34px;border-radius:50%;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;color:var(--ink-soft);}
.share-btn:hover{border-color:var(--brand);color:var(--brand);}
.share-btn svg{width:15px;height:15px;}

/* ============================================================
   UNIVERSITY DETAIL CARD (top-universities page)
   ============================================================ */
.uni-list{display:flex;flex-direction:column;}
.uni-entry{display:grid;grid-template-columns:56px 1fr;gap:18px;padding:26px 0;border-bottom:1px solid var(--line);}
.uni-entry .rank{font-family:var(--font-mono);font-size:28px;font-weight:600;color:var(--line-strong);}
.uni-entry.r1 .rank,.uni-entry.r2 .rank,.uni-entry.r3 .rank{color:var(--seal);}
.uni-entry h3{font-size:19px;margin-bottom:4px;}
.uni-facts{display:flex;flex-wrap:wrap;gap:14px;margin:8px 0 10px;font-family:var(--font-mono);font-size:12px;color:var(--ink-faint);}
.uni-facts b{color:var(--ink-soft);font-weight:600;}
.uni-entry p{color:var(--ink-soft);font-size:14.5px;margin-bottom:0;}

/* ============================================================
   FILTER / CATEGORY HEADER
   ============================================================ */
.cat-hero{padding:44px 0 30px;border-bottom:1px solid var(--line);}
.cat-hero h1{font-size:clamp(28px,4vw,40px);}
.cat-hero p{color:var(--ink-soft);max-width:60ch;margin-top:10px;}
.cat-list{display:flex;flex-direction:column;}
.cat-row{display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line);}
.cat-row .cat-idx{font-family:var(--font-mono);color:var(--ink-faint);font-size:13px;}
.cat-row h3{font-size:16.5px;}
.cat-row h3 a:hover{color:var(--brand);}
.cat-row .excerpt{color:var(--ink-soft);font-size:14px;margin-top:5px;}
.cat-row .date{font-family:var(--font-mono);font-size:12px;color:var(--ink-faint);white-space:nowrap;}

/* ============================================================
   INFO PAGES (about/privacy/terms)
   ============================================================ */
.page-hero{padding:56px 0 30px;text-align:left;border-bottom:1px solid var(--line);}
.page-hero h1{font-size:clamp(30px,4vw,44px);}
.updated-note{font-family:var(--font-mono);font-size:12.5px;color:var(--ink-faint);margin-top:14px;}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{background:var(--ink);color:#C9D2E0;margin-top:60px;}
html[data-theme="dark"] .site-footer{background:#05070A;}
.footer-top{padding:56px 0 36px;display:grid;gap:34px;grid-template-columns:1.4fr 1fr 1fr 1fr;}
@media(max-width:820px){.footer-top{grid-template-columns:1fr 1fr;}}
@media(max-width:520px){.footer-top{grid-template-columns:1fr;}}
.footer-brand svg{width:32px;height:32px;margin-bottom:12px;}
.footer-brand p{color:#8B93A1;font-size:14px;max-width:34ch;}
.footer-col h4{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:#8B93A1;margin-bottom:14px;}
.footer-col a{display:block;padding:6px 0;font-size:14px;color:#C9D2E0;transition:color .12s ease;}
.footer-col a:hover{color:#fff;}
.social-row{display:flex;gap:8px;margin-top:16px;}
.social-row a{width:34px;height:34px;border-radius:50%;border:1px solid #2A3140;display:flex;align-items:center;justify-content:center;padding:0;}
.social-row a:hover{border-color:var(--brand);background:rgba(91,141,239,.12);}
.social-row svg{width:15px;height:15px;}
.footer-bottom{border-top:1px solid #232A38;padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px;color:#7C8494;font-family:var(--font-mono);}

/* ============================================================
   MISC
   ============================================================ */
.skip-link{position:absolute;left:-999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;z-index:200;border-radius:0 0 8px 0;}
.skip-link:focus{left:0;}
.fade-up{opacity:0;transform:translateY(14px);transition:opacity .5s ease, transform .5s ease;}
.fade-up.in-view{opacity:1;transform:translateY(0);}
.back-top{position:fixed;bottom:22px;right:22px;width:42px;height:42px;border-radius:50%;background:var(--brand);color:#fff;display:none;align-items:center;justify-content:center;box-shadow:var(--shadow-lift);cursor:pointer;z-index:80;border:none;}
.back-top.show{display:inline-flex;}
.back-top svg{width:16px;height:16px;}
::selection{background:var(--brand);color:#fff;}