:root{
  --bg:#0f172a;
  --panel:#111827;
  --card:#ffffff;
  --text:#0f172a;
  --muted:#64748b;
  --brand:#2563eb;
  --brand2:#14b8a6;
  --soft:#f8fafc;
  --border:#e2e8f0;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family: system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:var(--soft);
  color:var(--text);
  line-height:1.5;
}
a{color:inherit}
.hero{
  background:linear-gradient(135deg,var(--bg),#1e3a8a);
  color:white;
  padding:56px 20px 42px;
}
.wrap{max-width:1100px;margin:0 auto}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:42px}
.logo{font-weight:800;font-size:1.35rem;letter-spacing:-.02em}
.nav a{color:white;text-decoration:none;opacity:.9;font-weight:600}
.hero h1{font-size:clamp(2rem,5vw,4.5rem);line-height:1.02;margin:0 0 18px;letter-spacing:-.06em}
.hero p{font-size:clamp(1.05rem,2vw,1.35rem);max-width:760px;margin:0;color:#dbeafe}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.btn{
  display:inline-block;
  padding:12px 18px;
  border-radius:14px;
  background:white;
  color:#0f172a;
  text-decoration:none;
  font-weight:750;
  border:1px solid rgba(255,255,255,.25);
}
.btn.secondary{background:rgba(255,255,255,.12);color:white}
.section{padding:38px 20px}
.section h2{font-size:clamp(1.6rem,3vw,2.4rem);letter-spacing:-.04em;margin:0 0 18px}
.grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(230px,1fr));
  gap:16px;
}
.card{
  background:white;
  border:1px solid var(--border);
  border-radius:20px;
  padding:20px;
  box-shadow:0 10px 30px rgba(15,23,42,.06);
}
.card h3{margin:0 0 8px;font-size:1.12rem}
.card p{margin:0 0 14px;color:var(--muted)}
.card a.tool-link{
  display:inline-block;
  text-decoration:none;
  color:var(--brand);
  font-weight:800;
}
.tool-shell{
  min-height:100vh;
  padding:24px 18px;
}
.tool-header{
  max-width:800px;
  margin:0 auto 18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.tool-header a{text-decoration:none;color:var(--brand);font-weight:800}
.tool-panel{
  max-width:800px;
  margin:0 auto;
  background:white;
  border:1px solid var(--border);
  border-radius:22px;
  padding:24px;
  box-shadow:0 10px 30px rgba(15,23,42,.06);
}
input,select,textarea,button{
  font:inherit;
}
input,select,textarea{
  width:100%;
  padding:12px 14px;
  border:1px solid var(--border);
  border-radius:12px;
  margin:8px 0 14px;
}
button{
  border:0;
  border-radius:14px;
  padding:12px 16px;
  font-weight:800;
  cursor:pointer;
  background:var(--brand);
  color:white;
  margin:4px 6px 4px 0;
}
button.alt{background:#475569}
.result{
  margin-top:16px;
  padding:16px;
  background:#f1f5f9;
  border-radius:16px;
  font-weight:750;
  word-wrap:break-word;
}
.big-time{
  font-size:clamp(3rem,12vw,6rem);
  font-weight:900;
  letter-spacing:-.06em;
  margin:20px 0;
  text-align:center;
}
.footer{
  padding:32px 20px;
  text-align:center;
  color:#64748b;
}
.small{font-size:.9rem;color:#64748b}
textarea{min-height:180px}
@media(max-width:640px){
  .nav{align-items:flex-start;flex-direction:column}
  .tool-panel{padding:18px}
}