:root{
    --bg:#0b0f0d;
    --panel:#111713;
    --panel2:#161e19;
    --line:#273329;
    --text:#e9efe9;
    --muted:#93a095;
    --accent:#b8ff5a;
    --accent2:#7fb83b;
    --danger:#ffb14a;
    --shadow:0 24px 70px rgba(0,0,0,.45);
  }
  *{box-sizing:border-box}
  html,body{height:100%}
  body{
    margin:0;
    font-family:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
      radial-gradient(circle at 15% 10%, rgba(184,255,90,.08), transparent 26%),
      radial-gradient(circle at 85% 90%, rgba(127,184,59,.08), transparent 28%),
      linear-gradient(180deg,#080b09 0%, #0c110e 100%);
    color:var(--text);
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed; inset:0; pointer-events:none; opacity:.18;
    background-image:
      linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
    background-size:38px 38px;
    mask-image:linear-gradient(to bottom,black,transparent 80%);
  }
  .wrap{min-height:100%; display:grid; place-items:center; padding:32px 18px}
  .shell{width:min(980px,100%)}
  .topbar{
    display:flex; align-items:center; justify-content:space-between; gap:18px; margin-bottom:18px;
  }
  .brand{display:flex; align-items:center; gap:12px}
  .badge{
    width:48px;height:48px;border:1px solid #384438;border-radius:14px;
    display:grid;place-items:center;background:linear-gradient(145deg,#18211a,#0e130f);
    box-shadow:inset 0 0 0 1px rgba(255,255,255,.03), var(--shadow);
    font-weight:900;color:var(--accent);letter-spacing:-2px;
  }
  h1{font-size:clamp(24px,4vw,38px);margin:0;letter-spacing:-1.2px}
  .sub{color:var(--muted);font-size:13px;margin-top:4px}
  .status{
    font-size:12px; text-transform:uppercase; letter-spacing:.14em; color:#aab5ac;
    border:1px solid var(--line); padding:9px 12px;border-radius:999px;background:#0f1511;
  }
  .card{
    background:linear-gradient(180deg,rgba(20,28,22,.98),rgba(13,18,15,.98));
    border:1px solid #263128;border-radius:24px;padding:24px;box-shadow:var(--shadow);
    position:relative;overflow:hidden;
  }
  .card::after{
    content:"";position:absolute;width:340px;height:340px;border:1px solid rgba(184,255,90,.08);
    border-radius:50%;right:-170px;top:-170px;box-shadow:0 0 0 45px rgba(184,255,90,.02),0 0 0 90px rgba(184,255,90,.015);
  }
  .grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;position:relative;z-index:1}
  .section{
    background:linear-gradient(180deg,#121914,#0f1511);border:1px solid var(--line);border-radius:18px;padding:18px;
  }
  .section-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
  .section-title{font-weight:800;letter-spacing:.02em}
  .labeltag{font-size:11px;color:var(--accent);letter-spacing:.16em;text-transform:uppercase}
  .coords{display:grid;grid-template-columns:1fr 1fr;gap:12px}
  label{display:block;color:var(--muted);font-size:12px;margin-bottom:7px;text-transform:uppercase;letter-spacing:.1em}
  input{
    width:100%;padding:15px 14px;border-radius:12px;border:1px solid #344237;background:#0b100d;color:var(--text);
    font-size:18px;font-weight:700;outline:none;transition:.18s ease;
  }
  input:focus{border-color:var(--accent2);box-shadow:0 0 0 3px rgba(184,255,90,.08)}
  .result{
    grid-column:1/-1;
    border-radius:20px;padding:22px;border:1px solid rgba(184,255,90,.26);
    background:linear-gradient(135deg,rgba(184,255,90,.10),rgba(184,255,90,.035));
    display:grid;grid-template-columns:1fr auto;gap:18px;align-items:center;position:relative;overflow:hidden;
  }
  .result::before{
    content:"";position:absolute;left:-55px;top:50%;width:110px;height:110px;border-radius:50%;transform:translateY(-50%);
    border:1px solid rgba(184,255,90,.22);box-shadow:0 0 0 20px rgba(184,255,90,.025),0 0 0 40px rgba(184,255,90,.018);
  }
  .eyebrow{font-size:11px;text-transform:uppercase;letter-spacing:.18em;color:#b9c4bb;margin-bottom:7px}
  .result-number{font-size:clamp(44px,8vw,76px);line-height:1;font-weight:950;letter-spacing:-3px;color:var(--accent)}
  .result-unit{font-size:clamp(24px,4vw,38px);font-weight:900;color:#fff;margin-top:4px;letter-spacing:-1px}
  .result-note{color:#b2bcb4;margin-top:8px;font-size:13px}
  .copybtn{
    border:1px solid #4d624e;background:#172018;color:#eaf4ea;border-radius:12px;padding:12px 16px;font-weight:800;cursor:pointer;
  }
  .copybtn:hover{background:#1d281f}
  .formula{
    margin-top:16px;color:#7f8b82;font-size:12px;text-align:center;position:relative;z-index:1
  }
  .footer{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:#667069;font-size:11px;margin-top:12px;padding:0 4px}
  .dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 16px rgba(184,255,90,.6);margin-right:7px}
  @media(max-width:720px){
    .grid{grid-template-columns:1fr}.result{grid-template-columns:1fr}.topbar{align-items:flex-start}.status{display:none}.card{padding:16px}.coords{grid-template-columns:1fr 1fr}
  }