:root {
    --bg: #0b0d14; --card: rgba(255,255,255,.05); --border: rgba(255,255,255,.1);
    --text: #eef0f6; --muted: #8b90a3; --accent: #7c5cff; --accent2: #22d3ee;
  }
  * { box-sizing: border-box; }
  body {
    margin: 0; min-height: 100vh; color: var(--text);
    font: 16px/1.5 Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
    background: radial-gradient(900px 500px at 15% -10%, rgba(124,92,255,.35), transparent),
                radial-gradient(800px 500px at 100% 0%, rgba(34,211,238,.2), transparent), var(--bg);
  }
  main { max-width: 920px; margin: 0 auto; padding: 48px 16px 40px; }
  h1 { font-size: clamp(2rem, 6vw, 3rem); margin: 0; letter-spacing: -.03em; }
  h1 span { background: linear-gradient(90deg, var(--accent), var(--accent2));
            -webkit-background-clip: text; background-clip: text; color: transparent; }
  .sub { color: var(--muted); margin: 8px 0 32px; }
  .card { background: var(--card); border: 1px solid var(--border); border-radius: 20px;
          padding: 24px; backdrop-filter: blur(12px); }
  form { display: flex; gap: 16px; flex-wrap: wrap; align-items: flex-end; }
  label { display: block; font-size: .8rem; color: var(--muted); margin-bottom: 6px;
          text-transform: uppercase; letter-spacing: .08em; }
  input, select { background: rgba(0,0,0,.35); border: 1px solid var(--border); color: var(--text);
          border-radius: 12px; padding: 12px 14px; font-size: 1.1rem; outline: none; }
  input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(124,92,255,.25); }
  input { width: 200px; }
  select { width: 130px; }
  button { padding: 13px 28px; border: 0; border-radius: 12px; color: #fff; font-size: 1rem;
           font-weight: 600; cursor: pointer; background: linear-gradient(135deg, var(--accent), #5b8cff);
           transition: transform .15s, box-shadow .15s; }
  button:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(124,92,255,.4); }
  #err { color: #ff7b8a; margin-top: 12px; min-height: 1.4em; }
  #result { margin-top: 28px; }
  .tablewrap { overflow-x: auto; }
  table { width: 100%; border-collapse: separate; border-spacing: 0 6px; text-align: center; }
  th { color: var(--muted); font-weight: 600; font-size: .8rem; text-transform: uppercase;
       letter-spacing: .08em; padding: 4px 10px; }
  td { padding: 12px 10px; background: rgba(255,255,255,.04); font-variant-numeric: tabular-nums; }
  td:first-child { border-radius: 12px 0 0 12px; font-weight: 700; color: var(--accent2); }
  td:last-child { border-radius: 0 12px 12px 0; }
  tr:hover td { background: rgba(124,92,255,.18); }
  td small { display: block; color: var(--muted); font-size: .72rem; }
  .kg { font-weight: 600; font-size: 1.05rem; }
  .note { color: var(--muted); font-size: .85rem; margin-top: 20px; }
  h2 { margin: 0 0 8px; font-size: 1.3rem; }
  ul.rpe { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
  ul.rpe li { background: rgba(255,255,255,.04); border-radius: 12px; padding: 10px 14px; color: var(--muted); }
  ul.rpe b { display: inline-block; min-width: 130px; color: var(--accent2); }
  @media (max-width: 560px) { ul.rpe b { display: block; } }
  .spaced { margin-top: 24px; }
  .tight { margin: 0 0 16px; }
  .hidden { display: none; }

  footer { display: flex; flex-direction: column; align-items: center; gap: 14px;
           max-width: 920px; margin: 0 auto; padding: 0 16px 48px; text-align: center; }
  footer::before { content: ""; width: 100%; height: 1px;
           background: linear-gradient(90deg, transparent, var(--accent), var(--accent2), transparent); opacity: .6; }
  .brand { font-weight: 700; letter-spacing: -.02em; }
  .brand span { background: linear-gradient(90deg, var(--accent), var(--accent2));
           -webkit-background-clip: text; background-clip: text; color: transparent; }
  .pill { display: inline-flex; align-items: center; gap: 10px; padding: 10px 20px;
          background: var(--card); border: 1px solid var(--border); border-radius: 999px;
          backdrop-filter: blur(12px); color: var(--muted); font-size: .85rem; }
  .pill i { width: 8px; height: 8px; border-radius: 50%;
          background: linear-gradient(135deg, var(--accent), var(--accent2)); }
  .pill b { color: var(--text); font-weight: 600; }