:root{
  --bg:#ffffff;
  --ink:#15181d;
  --muted:#5c6470;
  --line:#e4e7eb;
  --accent:#2563eb;
  --accent-ink:#1d4ed8;
  --surface:#f7f8fa;
}

*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent);text-decoration:none;}
a:hover{text-decoration:underline;}
img{max-width:100%;}

.wrap{max-width:820px;margin:0 auto;padding:0 20px;}

/* Header */
header.site{
  height:48px;
  display:flex;align-items:center;
  border-bottom:1px solid var(--line);
}
header.site .bar{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;
  max-width:820px;margin:0 auto;padding:0 20px;
}
.brand{font-weight:700;font-size:15px;color:var(--ink);}
.brand:hover{text-decoration:none;}
nav.site-nav{display:flex;gap:16px;font-size:13px;flex-wrap:wrap;}
nav.site-nav a{color:var(--muted);}
nav.site-nav a:hover{color:var(--ink);}

/* Fullscreen color tool */
.color-screen{
  position:relative;
  width:100%;
  height:calc(100vh - 48px);
  height:calc(100dvh - 48px);
  min-height:320px;
  background:#ffffff;
  overflow:hidden;
  transition:background-color .15s ease;
}
.color-screen.controls-hidden{cursor:none;}

.hint-text{
  position:absolute;
  top:50%;left:50%;
  transform:translate(-50%,-50%);
  font-size:13px;
  color:rgba(128,128,128,.75);
  background:rgba(0,0,0,.04);
  padding:6px 14px;
  border-radius:20px;
  pointer-events:none;
  transition:opacity .3s ease;
  text-align:center;
  white-space:nowrap;
}
.hint-text.hidden{opacity:0;}

.control-bar{
  position:absolute;
  left:0;right:0;bottom:0;
  background:rgba(15,17,21,.88);
  color:#fff;
  padding:10px 14px;
  display:flex;
  flex-direction:column;
  gap:8px;
  transition:opacity .25s ease, transform .25s ease;
  opacity:1;
  transform:translateY(0);
}
.control-bar.hidden{
  opacity:0;
  transform:translateY(8px);
  pointer-events:none;
}
.control-bar__row{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
}
.swatch{
  width:28px;height:28px;
  border-radius:6px;
  border:2px solid rgba(255,255,255,.5);
  cursor:pointer;
  padding:0;
}
.swatch:hover{border-color:#fff;}
.swatch.active{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent);}

input[type="color"]{
  width:32px;height:32px;
  border:none;border-radius:6px;
  padding:0;cursor:pointer;
  background:none;
}
.text-input, .rgb-input{
  font-family:inherit;
  font-size:13px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.3);
  color:#fff;
  border-radius:5px;
  padding:6px 8px;
}
.text-input{width:88px;}
.rgb-input{width:52px;}
.rgb-label{font-size:12px;color:rgba(255,255,255,.8);display:flex;align-items:center;gap:4px;}

.btn{
  font-family:inherit;
  font-size:13px;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.3);
  color:#fff;
  border-radius:5px;
  padding:7px 12px;
  cursor:pointer;
}
.btn:hover{background:rgba(255,255,255,.24);}
.btn.on{background:var(--accent);border-color:var(--accent);}
.btn:disabled{opacity:.4;cursor:not-allowed;}

.control-bar__divider{width:1px;align-self:stretch;background:rgba(255,255,255,.2);}

/* Ad slot placeholders */
.ad-slot{
  max-width:820px;margin:24px auto;padding:18px 20px;
  border:1px dashed var(--line);
  border-radius:8px;
  background:var(--surface);
  text-align:center;
}
.ad-slot__label{
  margin:0;font-size:11px;letter-spacing:.06em;text-transform:uppercase;
  color:var(--muted);
}

/* Content sections */
main.content{padding:8px 0 48px;}
.intro{padding:32px 0 8px;}
.intro h1{font-size:26px;margin:0 0 10px;letter-spacing:-.01em;}
.intro p{color:var(--muted);font-size:15.5px;max-width:64ch;}

.disclaimer{
  background:#FFF8E6;border:1px solid #F0DFA8;color:#6b5620;
  border-radius:8px;padding:10px 14px;font-size:13px;margin:18px 0;
}

.faq{padding:16px 0;}
.faq h2{font-size:20px;margin:0 0 16px;}
.faq-item{margin-bottom:18px;}
.faq-item h3{font-size:15.5px;margin:0 0 6px;}
.faq-item p{color:var(--muted);font-size:14.5px;margin:0;max-width:66ch;}

.cta-links{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0;}
.cta-links a{
  border:1px solid var(--line);border-radius:6px;padding:8px 14px;
  font-size:13.5px;color:var(--ink);background:var(--surface);
}
.cta-links a:hover{border-color:var(--accent);text-decoration:none;color:var(--accent-ink);}

footer.site{border-top:1px solid var(--line);margin-top:32px;}
footer.site .bar{
  max-width:820px;margin:0 auto;padding:22px 20px;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;
  font-size:12.5px;color:var(--muted);
}
footer.site nav{display:flex;gap:14px;}

@media (max-width:560px){
  .intro h1{font-size:22px;}
  .control-bar__row{gap:6px;}
}