:root{
  --paper:#f5f0e6;
  --paper-2:#ece6d5;
  --ink:#1c1a17;
  --muted:#6b6256;
  --line:#d8cfb8;
  --line-strong:#b8ad94;
  --latin:#b9975b;
  --latin-bg:#f1e6c8;
  --slav:#c45a2b;
  --slav-bg:#fbe2d6;
  --accent:#2a6b5a;
  --accent-2:#1e4a3f;
  --radius:14px;
  --max:860px;
  --max-wide:1100px;
  --serif:"Newsreader","Charter","Georgia",serif;
  --sans:Inter,"Helvetica Neue",Arial,sans-serif;
  --mono:"JetBrains Mono","SF Mono",Menlo,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.65;-webkit-font-smoothing:antialiased}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}
body{min-height:100vh;display:flex;flex-direction:column}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.topbar{max-width:var(--max-wide);width:100%;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:1.1rem 1.5rem;border-bottom:1px solid var(--line)}
.brand{font-weight:700;letter-spacing:.02em;color:var(--ink)}
.langsw{font-size:.9rem;color:var(--muted)}
.langsw a{color:var(--muted);padding:.25rem .5rem;border-radius:6px}
.langsw a[aria-current=page]{background:var(--ink);color:var(--paper)}
.container{max-width:var(--max);width:100%;margin:0 auto;padding:0 1.5rem}
.hero{padding:2.8rem 0 1.5rem;text-align:center}
.eyebrow{display:inline-flex;gap:.5rem;align-items:center;padding:.35rem .8rem;background:var(--paper-2);border:1px solid var(--line);border-radius:999px;font-family:var(--mono);font-size:.82rem;color:var(--muted);margin-bottom:1.2rem}
.hero h1{font-family:var(--serif);font-size:clamp(2.2rem,5vw,3.6rem);line-height:1.1;letter-spacing:-.03em;margin-bottom:.9rem}
.hero-lead{font-size:clamp(1.05rem,2vw,1.22rem);color:var(--muted);max-width:720px;margin:0 auto 1.8rem;line-height:1.6}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem;margin:1.5rem auto 0;max-width:var(--max-wide);text-align:left}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.25rem}
.stat-card.accent{border-top:3px solid var(--slav)}
.stat-card.latin{border-top:3px solid var(--latin)}
.stat-card.neutral{border-top:3px solid var(--accent)}
.kicker{font-family:var(--mono);font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:.4rem;display:flex;align-items:center;gap:.4rem}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block}
.dot-slav{background:var(--slav)} .dot-latin{background:var(--latin)} .dot-accent{background:var(--accent)}
.stat-val{font-family:var(--mono);font-size:2rem;font-weight:700;line-height:1}
.stat-unit{font-size:.95rem;color:var(--muted);font-weight:400}
.stat-desc{font-size:.88rem;color:var(--muted);margin-top:.2rem}
section{padding:2.2rem 0;border-top:1px solid var(--line)}
.section-head{margin-bottom:1.4rem}
.section-head h2{font-family:var(--serif);font-size:1.75rem;line-height:1.2;margin-bottom:.4rem}
.section-head p{color:var(--muted);max-width:680px}
.tool{background:#fff;border:1px solid var(--line-strong);border-radius:18px;padding:1.4rem;box-shadow:0 10px 30px rgba(28,26,23,.06);margin-bottom:1.5rem}
.tool-head{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.8rem;align-items:center;padding-bottom:1rem;border-bottom:1px solid var(--line);margin-bottom:1rem}
.textarea{width:100%;min-height:120px;padding:1rem;border:1.5px solid var(--line-strong);border-radius:10px;font-family:var(--sans);font-size:1rem;line-height:1.5;resize:vertical;background:var(--paper)}
.textarea:focus{outline:3px solid rgba(42,107,90,.2);border-color:var(--accent)}
.hint{font-size:.88rem;color:var(--muted);margin-top:.4rem}
.meter{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:.8rem;margin-top:1rem}
.meter-card{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:.9rem}
.meter-k{font-family:var(--mono);font-size:.75rem;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
.meter-v{font-family:var(--mono);font-size:1.35rem;font-weight:700;margin-top:.1rem}
.meter-v.slav{color:var(--slav)} .meter-v.latin{color:var(--accent)}
.hl{background:var(--slav-bg);border-bottom:2px solid var(--slav);border-radius:3px;padding:0 .15rem}
.lang-map{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:.6rem;margin-top:1rem}
.lang-chip{border:1px solid var(--line);border-radius:999px;padding:.55rem .7rem;text-align:center;background:#fff;font-family:var(--mono);font-size:.9rem;cursor:pointer}
.lang-chip.active{border-color:var(--ink);background:var(--ink);color:#fff}
.lang-chip small{display:block;font-family:var(--sans);font-size:.75rem;color:var(--muted)}
.lang-chip.active small{color:rgba(255,255,255,.7)}
.map-wrap{margin-top:1.2rem;border:1px solid var(--line);border-radius:14px;background:#fff;padding:1rem;overflow:hidden}
.map-svg{width:100%;height:auto;display:block}
.map-dot{cursor:pointer;transition:transform .15s ease}
.map-dot circle{stroke:#fff;stroke-width:3}
.map-dot.active{filter:drop-shadow(0 2px 6px rgba(0,0,0,.25))}
.map-dot.active circle{stroke:var(--ink);stroke-width:3.5}
.map-label{font-family:var(--mono);font-size:11px;font-weight:700;fill:var(--ink);text-anchor:middle}
.map-caption{margin-top:.6rem;font-size:.88rem;color:var(--muted)}
.map-caption strong{font-family:var(--mono);color:var(--ink)}
.strata{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-top:1rem}
.stratum{border-radius:12px;padding:1rem;border:1px solid var(--line)}
.stratum.latin{background:var(--latin-bg);border-color:var(--latin)}
.stratum.slav{background:var(--slav-bg);border-color:var(--slav)}
.stratum h3{font-family:var(--mono);font-size:.9rem;margin-bottom:.3rem}
.stratum p{font-size:.92rem;color:var(--muted)}
.table-wrap{overflow-x:auto;margin-top:1rem;border:1px solid var(--line);border-radius:10px;background:#fff}
table{width:100%;border-collapse:collapse;font-size:.95rem}
th,td{padding:.7rem .8rem;text-align:left;border-bottom:1px solid var(--line)}
th{font-family:var(--mono);font-size:.82rem;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);background:var(--paper-2)}
td.mono{font-family:var(--mono)}
.prose{max-width:680px}
.prose p{margin:.8rem 0;color:var(--ink)}
.prose strong{font-weight:700}
.method{max-width:680px;background:var(--paper-2);border:1px solid var(--line);border-radius:12px;padding:1.1rem}
.method h3{font-family:var(--serif);margin-bottom:.5rem}
.method ul{margin-left:1.1rem;color:var(--muted)}
.method li{margin:.3rem 0}
footer{margin-top:auto;padding:1.5rem 0;border-top:1px solid var(--line);color:var(--muted);font-size:.88rem;text-align:center}
@media(max-width:640px){.hero{padding-top:1.8rem}.strata{grid-template-columns:1fr}.topbar{padding-inline:1rem}.container{padding:0 1rem}}