*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#020208;
  --surface:#060612;
  --card:#0a0a1e;
  --coral:#e86a5e;
  --teal:#3fc7b0;
  --mustard:#f0c840;
  --violet:#8b6cf0;
  --text:#e0d8cc;
  --text-dim:#7a7a9a;
  --text-bright:#f0ece4;
  --radius:8px;
}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.75;min-height:100vh;display:flex;flex-direction:column}
a{color:var(--coral);text-decoration:none;transition:color .15s}
a:hover{color:var(--teal);text-decoration:underline}

/* ─── Nav ─── */
.top-nav{position:sticky;top:0;z-index:50;background:rgba(2,2,8,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.04);padding:0 24px;display:flex;align-items:center;height:56px;gap:24px}
.top-nav .nav-logo{font-family:'Space Grotesk',sans-serif;font-size:20px;font-weight:700;color:var(--text-bright);text-decoration:none;letter-spacing:1px;flex-shrink:0}
.top-nav .nav-logo span{color:var(--coral)}
.top-nav .nav-links{display:flex;gap:4px;flex-wrap:wrap;margin-left:auto}
.top-nav .nav-links a{font-size:12px;font-weight:600;color:var(--text-dim);padding:6px 12px;border-radius:6px;text-transform:uppercase;letter-spacing:1px;text-decoration:none;transition:all .15s;white-space:nowrap}
.top-nav .nav-links a:hover,.top-nav .nav-links a.active{color:var(--text-bright);background:rgba(255,255,255,.04)}
.nav-hamburger{display:none;background:none;border:none;color:var(--text-dim);font-size:22px;cursor:pointer;padding:4px 8px}
@media(max-width:768px){
  .nav-hamburger{display:block}
  .top-nav .nav-links{display:none;position:absolute;top:56px;left:0;right:0;background:rgba(2,2,8,.97);border-bottom:1px solid rgba(255,255,255,.04);flex-direction:column;padding:8px 16px 16px;gap:0}
  .top-nav .nav-links.open{display:flex}
  .top-nav .nav-links a{padding:10px 12px;font-size:13px}
}

/* ─── Content Layout ─── */
.content-wrapper{max-width:800px;margin:0 auto;padding:40px 24px 60px;flex:1;width:100%}
.content-wrapper.wide{max-width:1100px}

/* ─── Breadcrumb ─── */
.breadcrumb{font-size:12px;color:var(--text-dim);margin-bottom:24px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.breadcrumb a{color:var(--text-dim);text-decoration:none}
.breadcrumb a:hover{color:var(--coral);text-decoration:underline}
.breadcrumb .sep{opacity:.4}

/* ─── Headings ─── */
h1{font-family:'Space Grotesk',sans-serif;font-size:clamp(28px,5vw,42px);font-weight:700;color:var(--text-bright);line-height:1.15;margin-bottom:16px}
h2{font-family:'Space Grotesk',sans-serif;font-size:clamp(20px,3vw,26px);font-weight:700;color:var(--text-bright);margin:32px 0 12px;line-height:1.3}
h3{font-family:'Space Grotesk',sans-serif;font-size:18px;font-weight:600;color:var(--text-bright);margin:24px 0 8px;line-height:1.4}
p{margin-bottom:14px;color:var(--text-dim);font-size:15px;line-height:1.8}
p strong{color:var(--text)}
ul,ol{margin:12px 0 16px 20px;color:var(--text-dim)}
li{margin-bottom:8px;font-size:15px;line-height:1.7}
li strong{color:var(--text)}
blockquote{border-left:3px solid var(--coral);padding:12px 20px;margin:20px 0;background:rgba(232,106,94,.04);border-radius:0 var(--radius) var(--radius) 0}
blockquote p{margin:0;color:var(--text)}
hr{border:none;height:1px;background:rgba(255,255,255,.06);margin:32px 0}
img{max-width:100%;height:auto;border-radius:var(--radius)}
table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14px}
th,td{padding:10px 14px;text-align:left;border-bottom:1px solid rgba(255,255,255,.06)}
th{font-weight:700;color:var(--text-bright);font-size:12px;text-transform:uppercase;letter-spacing:1px}
td{color:var(--text-dim)}
tr:hover td{background:rgba(255,255,255,.02)}

/* ─── Meta ─── */
.article-meta{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:28px;font-size:13px;color:var(--text-dim)}
.article-meta span{display:flex;align-items:center;gap:4px}
.tag{display:inline-block;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;margin-right:6px}
.tag-continent{background:rgba(232,106,94,.1);color:var(--coral)}
.tag-learn{background:rgba(63,199,176,.1);color:var(--teal)}
.tag-fact{background:rgba(240,200,64,.1);color:var(--mustard)}

/* ─── Card Grid ─── */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;margin:20px 0}
.card{background:var(--card);border:1px solid rgba(255,255,255,.04);border-radius:var(--radius);padding:20px;transition:transform .15s,border-color .15s}
.card:hover{transform:translateY(-2px);border-color:rgba(232,106,94,.15)}
.card h3{margin:0 0 6px;font-size:16px}
.card p{font-size:13px;margin:0}
.card a{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:1px}

/* ─── Related Articles ─── */
.related-articles{margin-top:48px;padding-top:32px;border-top:1px solid rgba(255,255,255,.06)}
.related-articles h2{margin-top:0}

/* ─── FAQ Accordion ─── */
.faq-item{border-bottom:1px solid rgba(255,255,255,.06);padding:20px 0}
.faq-item h3{margin:0;font-size:16px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:var(--text-bright)}
.faq-item h3::after{content:'+';font-size:20px;color:var(--text-dim);transition:transform .2s}
.faq-item.open h3::after{transform:rotate(45deg);color:var(--coral)}
.faq-item .faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease}
.faq-item.open .faq-answer{max-height:600px;padding-top:12px}
.faq-item .faq-answer p{font-size:14px;line-height:1.7}

/* ─── Stats highlight ─── */
.stat-highlight{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:20px 0}
.stat-box{background:var(--card);border:1px solid rgba(255,255,255,.04);border-radius:var(--radius);padding:16px;text-align:center}
.stat-box .stat-num{font-family:'Space Grotesk',sans-serif;font-size:28px;font-weight:800;color:var(--text-bright);display:block}
.stat-box .stat-lbl{font-size:10px;color:var(--text-dim);text-transform:uppercase;letter-spacing:1.5px;font-weight:600;display:block;margin-top:4px}

/* ─── TOC ─── */
.toc{background:var(--card);border:1px solid rgba(255,255,255,.04);border-radius:var(--radius);padding:20px 24px;margin:20px 0}
.toc h3{margin:0 0 10px;font-size:13px;text-transform:uppercase;letter-spacing:2px;color:var(--text-dim)}
.toc ol{margin:0;padding-left:18px;counter-reset:toc}
.toc li{font-size:14px;margin-bottom:6px}
.toc a{color:var(--text-dim)}
.toc a:hover{color:var(--coral)}

/* ─── Footer ─── */
.site-footer{text-align:center;padding:24px;font-size:11px;color:var(--text-dim);border-top:1px solid rgba(255,255,255,.04);margin-top:auto}
.site-footer a{color:var(--text-dim);margin:0 8px}
.site-footer a:hover{color:var(--coral)}

/* ─── Responsive ─── */
@media(max-width:768px){
  .content-wrapper{padding:24px 16px 40px}
  .card-grid{grid-template-columns:1fr}
  .stat-highlight{grid-template-columns:repeat(2,1fr)}
  table{font-size:13px}
  th,td{padding:8px 10px}
  .quiz-container{padding:16px}
  .interactive-widget{padding:16px}
  .compass-widget{width:200px;height:200px}
  .coord-converter{flex-direction:column}
}

/* ─── Reading Progress Bar ─── */
#reading-progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:100;background:transparent}
#reading-progress-fill{height:100%;width:0;background:linear-gradient(90deg,var(--coral),var(--mustard),var(--teal));border-radius:0 2px 2px 0;transition:width .1s linear;opacity:0}

/* ─── Back to Top Button ─── */
#back-to-top{position:fixed;bottom:24px;right:24px;width:40px;height:40px;border-radius:50%;background:var(--card);border:1px solid rgba(255,255,255,.08);color:var(--text-dim);font-size:18px;cursor:pointer;z-index:50;opacity:0;transform:translateY(10px);transition:all .25s ease;pointer-events:none;display:flex;align-items:center;justify-content:center}
#back-to-top.visible{opacity:1;transform:translateY(0);pointer-events:auto}
#back-to-top:hover{background:var(--coral);color:var(--bg);border-color:var(--coral)}

/* ─── Scroll Fade-in Animation ─── */
.fade-in-up{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
.fade-in-up.visible{opacity:1;transform:translateY(0)}

/* ─── Interactive Quiz ─── */
.quiz-container{background:var(--card);border:1px solid rgba(255,255,255,.06);border-radius:var(--radius);padding:24px;margin:24px 0}
.quiz-container h3{margin:0 0 16px;font-size:18px;color:var(--text-bright)}
.quiz-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;font-size:12px;color:var(--text-dim);text-transform:uppercase;letter-spacing:1px}
.quiz-score{color:var(--mustard);font-weight:700}
.quiz-question{font-size:16px;font-weight:600;color:var(--text-bright);margin-bottom:16px;line-height:1.5}
.quiz-options{display:flex;flex-direction:column;gap:8px}
.quiz-option{padding:12px 16px;background:var(--surface);border:1px solid rgba(255,255,255,.06);border-radius:var(--radius);color:var(--text);font-size:14px;font-family:'Inter',sans-serif;cursor:pointer;text-align:left;transition:all .15s}
.quiz-option:hover{border-color:rgba(232,106,94,.2);background:rgba(232,106,94,.04);color:var(--text-bright)}
.quiz-option.correct{border-color:var(--teal);background:rgba(63,199,176,.1);color:var(--teal);pointer-events:none}
.quiz-option.wrong{border-color:var(--coral);background:rgba(232,106,94,.1);color:var(--coral);pointer-events:none}
.quiz-feedback{margin-top:12px;padding:10px 14px;border-radius:var(--radius);font-size:13px;display:none;line-height:1.5}
.quiz-feedback.show{display:block;animation:fadeUp .3s ease-out}
.quiz-correct-text{color:var(--teal);font-weight:600}
.quiz-wrong-text{color:var(--coral);font-weight:600}
.quiz-result{text-align:center;padding:20px 0}
.quiz-score-big{font-family:'Space Grotesk',sans-serif;font-size:48px;font-weight:800;color:var(--coral);margin-bottom:8px}
.quiz-result p{font-size:15px;color:var(--text-dim)}
.quiz-retry-btn{margin-top:16px;padding:10px 24px;background:var(--coral);border:none;border-radius:var(--radius);color:var(--bg);font-size:12px;font-weight:700;cursor:pointer;text-transform:uppercase;letter-spacing:1px;transition:opacity .15s}
.quiz-retry-btn:hover{opacity:.85}

/* ─── Interactive Widgets ─── */
.interactive-widget{background:var(--card);border:1px solid rgba(255,255,255,.06);border-radius:var(--radius);padding:24px;margin:24px 0}
.interactive-widget h3{margin:0 0 4px;font-size:16px;color:var(--text-bright)}
.interactive-widget .widget-desc{font-size:12px;color:var(--text-dim);margin-bottom:16px}

/* ─── Coordinate Converter ─── */
.coord-converter{display:flex;gap:12px;flex-wrap:wrap}
.coord-input-group{flex:1;min-width:200px}
.coord-input-group label{display:block;font-size:11px;text-transform:uppercase;letter-spacing:1px;color:var(--text-dim);margin-bottom:6px;font-weight:600}
.coord-input-group input{width:100%;padding:10px 14px;background:var(--surface);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);color:var(--text-bright);font-size:14px;font-family:'Space Grotesk',monospace;outline:none;transition:border-color .15s}
.coord-input-group input:focus{border-color:var(--teal)}
.coord-input-group input::placeholder{color:rgba(255,255,255,.15)}
.coord-result{margin-top:12px;padding:12px 16px;background:var(--surface);border-radius:var(--radius);font-size:13px;color:var(--text-dim);min-height:40px;line-height:1.6}
.coord-result strong{color:var(--teal)}
.coord-btn{padding:10px 20px;background:var(--teal);border:none;border-radius:var(--radius);color:var(--bg);font-size:12px;font-weight:700;cursor:pointer;text-transform:uppercase;letter-spacing:1px;transition:opacity .15s;margin-top:12px}
.coord-btn:hover{opacity:.85}

/* ─── Interactive Compass ─── */
.compass-widget{width:260px;height:260px;position:relative;margin:16px auto;border-radius:50%;background:var(--surface);border:2px solid rgba(255,255,255,.06)}
.compass-ring{position:absolute;inset:0;border-radius:50%;border:1px solid rgba(255,255,255,.08)}
.compass-ring-inner{position:absolute;inset:8px;border-radius:50%;border:1px dashed rgba(255,255,255,.05)}
.compass-needle-wrap{position:absolute;inset:0;transition:transform .4s ease}
.compass-needle-n{position:absolute;top:12px;left:50%;width:3px;height:50%;margin-left:-1.5px;background:linear-gradient(to bottom,var(--coral) 50%,var(--text-dim) 50%);border-radius:2px;opacity:.9}
.compass-center{position:absolute;top:50%;left:50%;width:10px;height:10px;margin:-5px 0 0 -5px;border-radius:50%;background:var(--text-bright);z-index:2;box-shadow:0 0 6px rgba(255,255,255,.3)}
.compass-label{position:absolute;font-family:'Space Grotesk',sans-serif;font-size:12px;font-weight:700;color:var(--text-dim)}
.compass-label.n{top:4px;left:50%;transform:translateX(-50%);color:var(--coral)}
.compass-label.s{bottom:4px;left:50%;transform:translateX(-50%)}
.compass-label.e{right:6px;top:50%;transform:translateY(-50%)}
.compass-label.w{left:6px;top:50%;transform:translateY(-50%)}
.compass-tick{position:absolute;background:rgba(255,255,255,.15)}
.compass-input{display:flex;gap:8px;margin-top:12px;align-items:center;justify-content:center}
.compass-input input{width:80px;padding:8px;background:var(--surface);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);color:var(--text-bright);font-size:14px;font-family:'Space Grotesk',monospace;text-align:center;outline:none}
.compass-input input:focus{border-color:var(--teal)}
.compass-input button{padding:8px 16px;background:var(--coral);border:none;border-radius:var(--radius);color:var(--bg);font-size:11px;font-weight:700;cursor:pointer;text-transform:uppercase;letter-spacing:1px}
.compass-bearing-display{text-align:center;margin-top:8px;font-size:13px;color:var(--text-dim)}
.compass-bearing-display strong{color:var(--mustard);font-family:'Space Grotesk',sans-serif;font-size:16px}

/* ─── Interactive Map Quiz Widget ─── */
.map-quiz-widget{display:flex;flex-direction:column;gap:12px}
.map-quiz-question{font-size:15px;font-weight:600;color:var(--text-bright);margin-bottom:4px}
.map-quiz-options{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.map-quiz-option{padding:10px 14px;background:var(--surface);border:1px solid rgba(255,255,255,.06);border-radius:var(--radius);color:var(--text);font-size:13px;cursor:pointer;text-align:center;transition:all .15s}
.map-quiz-option:hover{border-color:rgba(63,199,176,.2);color:var(--text-bright)}
.map-quiz-option.correct{border-color:var(--teal);background:rgba(63,199,176,.1);color:var(--teal)}
.map-quiz-option.wrong{border-color:var(--coral);background:rgba(232,106,94,.1);color:var(--coral)}
.map-quiz-progress{font-size:12px;color:var(--text-dim);text-align:center}
.map-quiz-score{text-align:center;font-family:'Space Grotesk',sans-serif;font-size:32px;font-weight:800;color:var(--teal)}

/* ─── Collapsible Sections ─── */
.collapsible{border:1px solid rgba(255,255,255,.06);border-radius:var(--radius);margin:12px 0;overflow:hidden}
.collapsible-header{padding:14px 16px;background:var(--card);cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .15s}
.collapsible-header:hover{background:rgba(255,255,255,.03)}
.collapsible-header h4{margin:0;font-size:14px;color:var(--text-bright)}
.collapsible-header .arrow{color:var(--text-dim);transition:transform .2s;font-size:12px}
.collapsible.open .collapsible-header .arrow{transform:rotate(180deg);color:var(--coral)}
.collapsible-body{max-height:0;overflow:hidden;transition:max-height .3s ease}
.collapsible.open .collapsible-body{max-height:1000px}
.collapsible-content{padding:0 16px 16px;font-size:14px;color:var(--text-dim);line-height:1.7}

/* ─── FAQ Search ─── */
.faq-search-wrap{margin-bottom:24px}
.faq-search{width:100%;padding:12px 16px;background:var(--card);border:1px solid rgba(255,255,255,.06);border-radius:var(--radius);color:var(--text-bright);font-size:14px;font-family:'Inter',sans-serif;outline:none;transition:border-color .15s}
.faq-search:focus{border-color:var(--coral)}
.faq-search::placeholder{color:var(--text-dim)}
.faq-section-title{font-size:13px;text-transform:uppercase;letter-spacing:2px;color:var(--text-dim);margin:24px 0 0;padding-top:8px;font-weight:700}

/* ─── Interactive Article Map ─── */
.article-map-wrap{margin:0 0 2.5rem;border-radius:16px;border:1px solid rgba(255,255,255,.06);box-shadow:0 8px 40px rgba(0,0,0,.5);overflow:hidden}
.article-map{width:100%;height:500px;background:#020208}
.article-map .leaflet-popup-content-wrapper{background:var(--card);color:var(--text);border-radius:12px;border:1px solid rgba(255,255,255,.08);box-shadow:0 8px 32px rgba(0,0,0,.6)}
.article-map .leaflet-popup-tip{background:var(--card)}
.article-map .leaflet-popup-content{font-family:'Inter',sans-serif;font-size:13px;line-height:1.6;margin:12px 16px}
.article-map .leaflet-popup-content strong{color:var(--coral)}
.article-map .leaflet-popup-close-button{color:var(--text-dim)!important;font-size:18px!important}
.article-map .leaflet-popup-close-button:hover{color:var(--coral)!important}
.article-map .leaflet-control-zoom a{background:var(--card)!important;color:var(--text)!important;border-color:rgba(255,255,255,.08)!important}
.article-map .leaflet-control-zoom a:hover{background:var(--surface)!important;color:var(--coral)!important}
.article-map .leaflet-control-attribution{background:rgba(2,2,8,.8)!important;color:var(--text-dim)!important;font-size:10px!important}
.article-map .leaflet-control-attribution a{color:var(--text-dim)!important}
.map-tooltip{background:var(--card)!important;color:var(--text-bright)!important;border:1px solid rgba(255,255,255,.1)!important;border-radius:8px!important;padding:6px 12px!important;font-family:'Inter',sans-serif!important;font-size:12px!important;font-weight:600!important;box-shadow:0 4px 16px rgba(0,0,0,.5)!important}
.map-tooltip::before{border-top-color:var(--card)!important}
.custom-marker{background:none!important;border:none!important}

/* ─── Map Info Panel ─── */
.map-overlay{background:var(--card);padding:20px 24px;border-top:1px solid rgba(255,255,255,.06)}
.map-overlay-title{font-family:'Space Grotesk',sans-serif;font-size:18px;font-weight:700;color:var(--text-bright);margin-bottom:6px;line-height:1.3}
.map-overlay-subtitle{font-size:13px;color:var(--text-dim);margin-bottom:14px;line-height:1.5}
.map-overlay-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:14px}
.map-overlay-stat{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.05);border-radius:8px;padding:10px 12px;text-align:center}
.map-overlay-stat .stat-val{font-family:'Space Grotesk',sans-serif;font-size:20px;font-weight:800;color:var(--coral);display:block;line-height:1.2}
.map-overlay-stat .stat-lbl{font-size:10px;text-transform:uppercase;letter-spacing:1px;color:var(--text-dim);display:block;margin-top:2px}
.map-overlay-hint{font-size:11px;color:var(--text-dim);border-top:1px solid rgba(255,255,255,.06);padding-top:10px;line-height:1.5}
.map-overlay-hint strong{color:var(--teal)}
.map-overlay-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.map-overlay-tag{font-size:11px;padding:4px 10px;border-radius:20px;border:1px solid rgba(255,255,255,.08);color:var(--text-dim);background:rgba(255,255,255,.02)}
.map-overlay-tag.highlight{border-color:rgba(232,106,94,.3);color:var(--coral);background:rgba(232,106,94,.06)}
@media(max-width:640px){.map-overlay-stats{grid-template-columns:1fr 1fr}.article-map{height:350px}}