:root {
      --voro-bg: #f7f7f7;
      --voro-card: #ffffff;
      --voro-border: #e8e8e8;
      --voro-muted: #666666;
      --voro-ink: #111111;
      --voro-accent: #b30059;
    }

    body {
      margin: 0;
      background: var(--voro-bg);
      color: var(--voro-ink);
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    }

    .voro-wrap {
      max-width: 1100px;
      margin: 0 auto;
      padding: 24px;
    }

    .voro-header {
      margin-bottom: 18px;
    }

    .voro-kicker {
      margin: 0 0 0.35rem 0;
      color: var(--voro-accent);
      font-size: 0.82rem;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }

    .voro-header h1 {
      margin: 0 0 8px;
      font-size: clamp(1.9rem, 4vw, 3rem);
      line-height: 1.1;
      letter-spacing: -0.03em;
      color: #111111;
    }

    .voro-lead {
      max-width: 820px;
      margin: 0;
      color: var(--voro-muted);
      font-size: 0.98rem;
      line-height: 1.65;
    }

    .voro-doc {
      margin-top: 24px;
    }

    .voro-doc h2,
    .voro-doc h3 {
      color: #111111;
    }

    .voro-doc p,
    .voro-doc li {
      line-height: 1.65;
      color: #333333;
    }

    .voro-doc ol {
      padding-left: 1.25rem;
    }

    .voro-panel {
      margin-top: 28px;
      background: var(--voro-card);
      border: 1px solid var(--voro-border);
      border-radius: 16px;
      padding: 16px;
      box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
    }

    .voro-controls {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      align-items: end;
      margin-bottom: 14px;
    }

    .voro-field label,
    .voro-check label {
      display: block;
      margin-bottom: 4px;
      color: var(--voro-muted);
      font-size: 0.78rem;
    }

    .voro-field input[type="number"],
    .voro-field input[type="range"] {
      padding: 8px;
      border: 1px solid var(--voro-border);
      border-radius: 10px;
      background: #ffffff;
      color: #111111;
      font: inherit;
    }

    .voro-field input[type="number"] {
      width: 110px;
    }

    .voro-field input[type="range"] {
      width: 160px;
    }

    .voro-check {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      margin-top: 0.5rem;
    }

    .voro-check label {
      margin-bottom: 0;
      color: #333333;
      font-size: 0.86rem;
    }

    input:focus-visible {
      outline: 3px solid rgba(179, 0, 89, 0.18);
      border-color: var(--voro-accent);
    }

    .voro-btn {
      padding: 8px 12px;
      border: 1px solid var(--voro-border);
      background: #111111;
      color: #ffffff;
      border-radius: 10px;
      cursor: pointer;
      font: inherit;
      font-weight: 600;
      transition:
        background 0.2s ease,
        transform 0.2s ease,
        box-shadow 0.2s ease;
    }

    .voro-btn:hover {
      background: #333333;
      transform: translateY(-1px);
      box-shadow: 0 6px 14px rgba(0, 0, 0, 0.08);
    }

    .voro-status {
      color: var(--voro-muted);
      font-size: 0.84rem;
      line-height: 1.5;
    }

    .voro-canvas-box {
      background: #ffffff;
      border: 1px solid var(--voro-border);
      border-radius: 16px;
      overflow: hidden;
    }

    #voronoi {
      width: 100%;
      height: 560px;
      display: block;
      background: #fafafa;
    }

    .voro-note {
      margin-top: 10px;
      color: var(--voro-muted);
      font-size: 0.84rem;
      line-height: 1.5;
    }

    .voro-back-wrap {
      display: flex;
      justify-content: center;
      width: 100%;
      margin: 24px 0 28px;
    }

    @media (max-width: 720px) {
      .voro-controls {
        align-items: stretch;
        flex-direction: column;
      }

      .voro-field,
      .voro-field input[type="number"],
      .voro-field input[type="range"],
      .voro-btn {
        width: 100%;
      }

      .voro-check {
        margin-top: 0;
      }

      #voronoi {
        height: 420px;
      }
    }

    @media (max-width: 640px) {
      .voro-wrap {
        padding: 18px;
      }
    }