/* World Languages Explorer — landing + privacy site
   Dark theme matched to the app; accents drawn from the language-family palette. */
:root{
  --bg:#070b14; --bg2:#0b1626; --panel:#101d31; --line:#1d3050;
  --tx:#eaf1fb; --tx-dim:#9fb2cc; --tx-mut:#6f86a6;
  --accent:#32bd94; --accent2:#4da8d5; --accent3:#c25b9d;
  --radius:16px; --maxw:1080px;
  --font:'Segoe UI',system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--tx);line-height:1.6;
  background:radial-gradient(120% 90% at 50% -10%,#16335a 0%,var(--bg2) 42%,var(--bg) 100%);
  background-attachment:fixed;-webkit-font-smoothing:antialiased;
}
a{color:var(--accent2);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* header */
header.site{position:sticky;top:0;z-index:10;backdrop-filter:blur(10px);
  background:rgba(7,11,20,.72);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;gap:14px;height:64px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;letter-spacing:.2px}
.brand img{width:34px;height:34px;border-radius:9px;display:block}
.brand span{font-size:16px}
header.site nav{margin-left:auto;display:flex;gap:22px;font-size:14px}
header.site nav a{color:var(--tx-dim)}
header.site nav a:hover{color:var(--tx);text-decoration:none}

/* hero */
.hero{text-align:center;padding:84px 0 64px}
.hero .logo{width:108px;height:108px;border-radius:26px;box-shadow:0 12px 40px rgba(0,0,0,.5);margin-bottom:26px}
.hero h1{font-size:clamp(34px,6vw,58px);line-height:1.05;margin:0 0 16px;letter-spacing:-.5px}
.hero h1 .grad{background:linear-gradient(90deg,var(--accent),var(--accent2) 50%,var(--accent3));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lede{font-size:clamp(16px,2.4vw,20px);color:var(--tx-dim);max-width:660px;margin:0 auto 30px}
.cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:9px;padding:13px 24px;border-radius:12px;
  font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:.16s}
.btn-primary{background:linear-gradient(180deg,var(--accent),#23a07c);color:#04140d}
.btn-primary:hover{filter:brightness(1.07);text-decoration:none;transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--line);color:var(--tx)}
.btn-ghost:hover{background:rgba(255,255,255,.09);text-decoration:none}
.cta-note{margin-top:14px;font-size:13px;color:var(--tx-mut)}

/* family spectrum strip */
.spectrum{display:flex;height:10px;max-width:760px;margin:44px auto 0;border-radius:6px;overflow:hidden;
  box-shadow:0 4px 24px rgba(0,0,0,.4)}
.spectrum i{flex:1}

/* sections */
section.block{padding:60px 0}
section.block h2{font-size:clamp(24px,4vw,34px);text-align:center;margin:0 0 8px}
section.block .sub{text-align:center;color:var(--tx-dim);max-width:620px;margin:0 auto 40px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.card .ic{font-size:26px;margin-bottom:10px}
.card h3{margin:0 0 6px;font-size:17px}
.card p{margin:0;color:var(--tx-dim);font-size:14.5px}

/* stats */
.stats{display:flex;gap:20px;justify-content:center;flex-wrap:wrap;margin-top:8px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 30px;text-align:center;min-width:150px}
.stat b{display:block;font-size:30px;background:linear-gradient(90deg,var(--accent),var(--accent2));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{color:var(--tx-dim);font-size:14px}

/* privacy page */
.doc{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:38px clamp(22px,4vw,52px);margin:40px auto 64px;max-width:820px}
.doc h1{margin-top:0}
.doc h2{margin-top:32px;font-size:20px}
.doc .updated{color:var(--tx-mut);font-size:14px;margin-top:-8px}
.doc ul{padding-left:22px}
.doc li{margin:6px 0;color:var(--tx-dim)}

/* footer */
footer.site{border-top:1px solid var(--line);padding:34px 0;color:var(--tx-mut);font-size:14px}
footer.site .wrap{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between}
footer.site nav{display:flex;gap:20px}
footer.site a{color:var(--tx-dim)}