:root{
  --ink:#17202a;
  --muted:#66717e;
  --line:#e7e9ed;
  --paper:#ffffff;
  --soft:#f5f7f8;
  --accent:#0f766e;
  --accent-dark:#0a5c56;
  --warm:#f3a23a;
  --shadow:0 18px 50px rgba(23,32,42,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--paper);font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.6}
a{color:inherit;text-decoration:none}
.container{width:min(1120px,92%);margin:auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-wrap{height:74px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;line-height:1.05}
.brand>span:last-child span{display:block;color:var(--muted);font-size:11px;font-weight:600;letter-spacing:.08em;margin-top:3px}
.brand-mark{width:38px;height:38px;border-radius:11px;background:var(--accent);color:#fff;display:grid;place-items:center;font-size:20px}
nav{display:flex;gap:26px;font-size:14px;font-weight:600;color:#49515b}
nav a:hover{color:var(--accent)}
.menu-btn{display:none;border:0;background:none;font-size:25px}
.hero{padding:85px 0 70px;background:linear-gradient(135deg,#f7fbfa 0%,#fff 60%)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:center}
.eyebrow{font-size:11px;font-weight:800;letter-spacing:.16em;color:var(--accent)}
h1{font-size:clamp(42px,6vw,72px);line-height:1.03;letter-spacing:-.05em;margin:16px 0 22px}
h1 em{font-style:normal;color:var(--accent)}
h2{font-size:clamp(30px,4vw,44px);line-height:1.1;letter-spacing:-.035em;margin:8px 0 12px}
.hero-text{font-size:18px;color:var(--muted);max-width:620px}
.hero-actions{display:flex;gap:12px;margin:30px 0}
.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:10px;padding:12px 18px;font-weight:700;border:1px solid transparent;cursor:pointer;font:inherit}
.btn.primary{background:var(--accent);color:white}
.btn.primary:hover{background:var(--accent-dark)}
.btn.secondary{border-color:#d6dadd;background:white}
.hero-stats{display:flex;gap:28px;margin-top:38px}
.hero-stats div{display:grid}
.hero-stats strong{font-size:14px}
.hero-stats span{font-size:12px;color:var(--muted)}
.hero-card{display:flex;justify-content:center}
.language-card{width:min(390px,100%);padding:34px;border-radius:24px;background:#fff;box-shadow:var(--shadow);border:1px solid var(--line);transform:rotate(1deg)}
.mini-label{font-size:10px;letter-spacing:.15em;color:var(--muted);font-weight:800}
.word-placeholder{font-size:32px;font-weight:800;margin:30px 0 3px;color:var(--accent)}
.meaning{font-size:17px;font-weight:600}
.divider{height:1px;background:var(--line);margin:25px 0}
.language-card p{font-size:13px;color:var(--muted)}
.ad-slot{margin-top:26px;margin-bottom:10px;min-height:92px;border:1px dashed #cfd4d9;border-radius:12px;display:grid;place-items:center;text-align:center;color:#8b939c;font-size:12px}
.ad-slot span{display:block;font-size:9px;letter-spacing:.15em}
.section{padding:82px 0}
.section.alt{background:var(--soft)}
.section-heading{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:30px}
.section-heading>p{max-width:470px;color:var(--muted);font-size:14px;margin:0}
.centered{text-align:center;display:block}
.centered p{margin:0 auto}
.search-box{display:flex;align-items:center;gap:12px;border:1px solid var(--line);box-shadow:0 8px 25px rgba(23,32,42,.04);border-radius:13px;padding:0 16px;margin-bottom:25px}
.search-box span{font-size:26px;color:var(--muted)}
.search-box input{border:0;outline:0;width:100%;padding:17px 0;font:inherit}
.dictionary-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.word-card,.phrase-card,.story-card,.lesson-card{background:white;border:1px solid var(--line);border-radius:15px;padding:20px}
.word-card:hover,.story-card:hover,.lesson-card:hover{box-shadow:0 12px 35px rgba(23,32,42,.07);transform:translateY(-2px);transition:.2s}
.word-rohingya{font-size:23px;font-weight:800;margin:5px 0}
.word-english{font-weight:600}
.word-meta{font-size:11px;color:var(--muted);margin-top:8px}
.verify{display:inline-block;margin-top:12px;font-size:9px;font-weight:800;letter-spacing:.08em;padding:4px 7px;border-radius:5px;background:#fff5df;color:#9a650e}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.lesson-card{position:relative}
.lesson-number{font-size:12px;font-weight:800;color:var(--accent)}
.lesson-card h3{margin:7px 0}
.lesson-card p{font-size:13px;color:var(--muted);margin-bottom:18px}
.lesson-card a{font-size:13px;font-weight:700;color:var(--accent)}
.phrase-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.phrase-card{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center}
.phrase-card .english{font-weight:700}
.phrase-card .rohingya{font-size:19px;font-weight:700;color:var(--accent);margin-top:3px}
.speaker{border:1px solid var(--line);background:var(--soft);border-radius:50%;width:40px;height:40px;cursor:pointer}
.narrow{width:min(760px,92%)}
.quiz-card{background:white;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow)}
.quiz-progress{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;font-weight:700}
.quiz-card h3{font-size:25px;margin:28px 0}
.quiz-options{display:grid;gap:10px;margin-bottom:20px}
.option{padding:14px;border:1px solid var(--line);background:white;border-radius:10px;text-align:left;cursor:pointer;font:inherit}
.option:hover{border-color:var(--accent)}
.option.correct{border-color:#2f8f6b;background:#effaf5}
.option.wrong{border-color:#d45a5a;background:#fff2f2}
.option:disabled{cursor:default}
.quiz-result{min-height:24px;font-size:14px;font-weight:600}
.story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.story-icon{font-size:27px}
.tag{display:inline-block;margin-top:15px;font-size:9px;font-weight:800;letter-spacing:.1em;color:var(--accent)}
.story-card h3{margin:7px 0}
.story-card p{font-size:13px;color:var(--muted)}
.story-card a{font-size:13px;font-weight:700;color:var(--accent)}
.contact{padding-top:20px}
.contact-box{background:var(--ink);color:white;border-radius:22px;padding:42px;display:flex;justify-content:space-between;align-items:center;gap:30px}
.contact-box h2{max-width:650px}
.contact-box p{color:#c4cbd2;max-width:650px}
footer{padding:35px 0;border-top:1px solid var(--line)}
.footer-wrap{display:grid;grid-template-columns:1fr auto;gap:20px}
.footer-wrap strong{display:block}
.footer-wrap span{display:block;color:var(--muted);font-size:12px}
.footer-links{display:flex;gap:20px;font-size:13px;font-weight:600}
.footer-wrap>p{grid-column:1/-1;margin:0;color:var(--muted);font-size:11px}
code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em}
@media(max-width:850px){
  .hero-grid{grid-template-columns:1fr;gap:35px}
  .dictionary-grid{grid-template-columns:repeat(2,1fr)}
  .card-grid,.story-grid{grid-template-columns:1fr}
  .section-heading{display:block}
  .section-heading>p{margin-top:10px}
  nav{display:none;position:absolute;top:74px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:15px 4%;flex-direction:column;gap:12px}
  nav.open{display:flex}
  .menu-btn{display:block}
}
@media(max-width:540px){
  .hero{padding-top:55px}
  .hero-actions{flex-direction:column}
  .hero-stats{gap:15px;flex-wrap:wrap}
  .dictionary-grid,.phrase-grid{grid-template-columns:1fr}
  .contact-box{display:block;padding:30px}
  .contact-box .btn{margin-top:12px}
  .footer-wrap{grid-template-columns:1fr}
}