:root{
  --bg:#f8f9fa;
  --surface:#fff;
  --surface-alt:#f8f9ff;
  --primary:#007bff;
  --primary-dark:#0056b3;
  --border:#e1e8ef;
  --muted:#666;
  --card-radius:12px;
  --shadow:0 4px 8px rgba(0,0,0,0.06);
}

*{box-sizing:border-box}
body{
  margin:0;
  font-family:Arial, sans-serif;
  background:var(--bg);
  color:#222;
}
.header{background:var(--primary);color:#fff;padding:1.2rem 1rem;text-align:center}
.header h1{margin:0;font-size:1.6rem}
.header .intro{opacity:0.95;margin-top:0.3rem}

.container{max-width:1100px;margin:1rem auto;padding:0 1rem}
.card{background:var(--surface);border-radius:var(--card-radius);padding:1rem;border:1px solid var(--border);box-shadow:var(--shadow);margin-bottom:1rem}

.section-title{text-align:center;color:var(--primary);position:relative;margin-bottom:1rem}
.section-title::after{content:"";position:absolute;width:70px;height:3px;background:var(--primary);left:50%;bottom:-8px;transform:translateX(-50%)}

.time-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:0.8rem;margin-bottom:1rem}

input[type=number],select{
  width:100%;padding:0.6rem;border-radius:8px;border:1px solid var(--border);font-size:1rem
}

.controls{display:flex;gap:0.6rem;margin-top:0.6rem}
.btn-primary,.btn-secondary{
  padding:0.6rem 1rem;border-radius:8px;border:none;color:#fff;cursor:pointer
}
.btn-primary{background:var(--primary)}
.btn-primary:hover{background:var(--primary-dark)}
.btn-secondary{background:#6c757d}

.result-box{
  margin-top:1rem;padding:0.8rem;text-align:center;font-size:1.3rem;
  background:var(--surface-alt);border-radius:8px;border:1px solid var(--border)
}

/* Steps */
.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}
.step{background:var(--surface-alt);padding:0.8rem;border-radius:8px;border:1px solid var(--border)}
.step-number{width:35px;height:35px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:0.5rem}

/* Benefits */
.benefits-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:0.8rem}
.benefit{background:var(--surface-alt);padding:0.8rem;border-radius:8px;border:1px solid var(--border)}

/* FAQ */
.faq-item{margin-bottom:0.6rem}
.faq-question{
  width:100%;padding:0.8rem;border:1px solid var(--border);background:var(--surface-alt);
  cursor:pointer;font-weight:600;border-radius:8px;color:#0056b3;text-align: left;
}
.faq-answer{
  display:none;padding:0.7rem;background:#fff;border-left:3px solid var(--primary);border-radius:0 0 8px 8px
}
.faq-item.active .faq-answer{display:block}

.footer{text-align:center;color:var(--muted);padding:1rem}