*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#22C55E;--primary-dim:rgba(34,197,94,.12);
  --secondary:#4ADE80;--accent:#3B82F6;
  --bg:#0A1A10;--surface:#112B18;--surface2:#1A3B22;
  --border:rgba(34,197,94,.1);--text:#ECFDF5;--text-dim:#86EFAC;
  --radius:12px;--font:'Inter',system-ui,sans-serif;
  --transition:250ms ease;
}
html{font-size:16px}
body{background:var(--bg);color:var(--text);font-family:var(--font);min-height:100vh}
.header{position:sticky;top:0;z-index:100;backdrop-filter:blur(16px);background:rgba(10,26,16,.8);border-bottom:1px solid var(--border)}
.header-inner{max-width:700px;margin:0 auto;padding:.75rem 1.5rem;display:flex;align-items:center}
.logo{display:flex;align-items:center;gap:.5rem}
.logo-icon{font-size:1.25rem}
.logo h1{font-size:1.1rem;font-weight:700;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.main{max-width:700px;margin:0 auto;padding:1.5rem}
.glass-card{background:rgba(17,43,24,.6);backdrop-filter:blur(12px);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem;margin-bottom:1.25rem}
.section-title{font-size:.9rem;font-weight:700;margin-bottom:.75rem;display:flex;align-items:center;gap:.5rem}
.section-title::before{content:'';width:4px;height:18px;background:linear-gradient(to bottom,var(--primary),var(--secondary));border-radius:2px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:.5rem;margin-bottom:.5rem}
.form-group{display:flex;flex-direction:column;gap:.3rem}
.form-group input,.form-group select{background:var(--surface2);border:1px solid var(--border);border-radius:8px;padding:.5rem;color:var(--text);font-family:var(--font);font-size:.8rem;outline:none}
.form-group input:focus,.form-group select:focus{border-color:var(--primary)}
.ctrl-label{font-size:.65rem;font-weight:600;color:var(--text-dim);text-transform:uppercase;letter-spacing:.5px}
.btn{display:inline-flex;align-items:center;gap:.3rem;padding:.5rem 1rem;border:none;border-radius:8px;font-size:.85rem;font-weight:700;cursor:pointer;transition:all var(--transition);font-family:var(--font)}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#000}
.btn-primary:hover{filter:brightness(1.15);transform:translateY(-1px)}
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:.5rem;margin-bottom:1rem}
.stat-card{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);padding:.6rem;text-align:center}
.stat-card.accent{border-color:var(--primary);background:var(--primary-dim)}
.stat-val{font-size:1.1rem;font-weight:800;color:var(--primary)}
.stat-label{font-size:.55rem;color:var(--text-dim);text-transform:uppercase;letter-spacing:.5px;font-weight:600}
.comparisons{display:grid;gap:.4rem;margin-bottom:1rem}
.comp-item{background:var(--surface2);border:1px solid var(--border);border-radius:8px;padding:.5rem .65rem;display:flex;align-items:center;gap:.5rem;font-size:.8rem}
.comp-icon{font-size:1.1rem}
.tips{border-top:1px solid var(--border);padding-top:.75rem}
.tip-item{font-size:.75rem;color:var(--text-dim);margin-bottom:.3rem;padding-left:.75rem;position:relative}
.tip-item::before{content:'💡';position:absolute;left:0;font-size:.6rem}
@media(max-width:600px){.stats-row{grid-template-columns:repeat(2,1fr)}.form-row{grid-template-columns:1fr}}