:root {
      --paper: #FFFFFF;
      --mist: #F5F5F5;
      --ink: #0A0A0A;
      --ink-60: rgba(10,10,10,0.62);
      --ink-40: rgba(10,10,10,0.38);
      --ink-15: rgba(10,10,10,0.12);
      --emerald: #0B6E3D;
      --emerald-700: #0E7F46;
      --rust: #9A2E1A;
      --bg: var(--paper);
      --fg: var(--ink);
      --surface: var(--paper);
      --surface-2: var(--mist);
      --border: var(--ink-15);
      --cta-fg: #ffffff;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
      background: var(--bg);
      color: var(--fg);
      min-height: 100vh;
      -webkit-font-smoothing: antialiased;
    }
    header {
      padding: 18px 28px;
      display: flex; justify-content: space-between; align-items: center;
      background: var(--surface);
      border-bottom: 1px solid var(--border);
      position: sticky; top: 0; z-index: 10;
    }
    header .brand { display: flex; align-items: center; gap: 10px; }
    header h1 { font-size: 15px; font-weight: 600; letter-spacing: 0.02em; }
    header .controls { display: flex; gap: 8px; align-items: center; }
    header button {
      padding: 8px 14px; border: 1px solid var(--border);
      background: var(--surface); color: var(--fg); border-radius: 6px; cursor: pointer;
      font: inherit; font-size: 13px; font-weight: 500;
    }
    header button:hover { background: var(--surface-2); }
    .container { padding: 24px 28px; max-width: 1080px; margin: 0 auto; }

    .hub-intro { margin: 8px 0 24px; }
    .hub-intro h2 { font-size: 20px; font-weight: 700; margin-bottom: 6px; }
    .hub-intro p { color: var(--ink-60); font-size: 14px; }
    .tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
    a.tool-card, div.tool-card {
      display: block;
      padding: 22px;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 12px;
      text-decoration: none;
      color: var(--fg);
      transition: border-color 120ms, background 120ms;
    }
    a.tool-card:hover { border-color: var(--emerald); background: var(--surface-2); }
    .tool-card .tool-name { font-size: 16px; font-weight: 700; display: flex; align-items: center; gap: 8px; }
    .tool-card .tool-desc { font-size: 13px; color: var(--ink-60); margin-top: 6px; line-height: 1.5; }
    .tool-card .tool-path { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--ink-40); margin-top: 12px; }
    .tool-card.disabled { opacity: 0.55; cursor: default; }
    .badge {
      font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em;
      padding: 2px 7px; border-radius: 9px;
    }
    .badge.live { background: rgba(11,110,61,0.12); color: var(--emerald); }
    .badge.soon { background: var(--surface-2); color: var(--ink-40); }

    @media (max-width: 640px) {
      header { padding: 14px 18px; }
      .container { padding: 16px 18px; }
    }