:root {
      --ink: #06131f;
      --paper: #ffffff;
      --line: #dbe3ea;
      --muted: #4b5563;
      --signal: #0b63ce;
      --font-sans: HelveticaNeue, "Helvetica Neue", Helvetica, Arial, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
      --font-mono: "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace;
      font-family: var(--font-sans);
      color: var(--ink);
      background: var(--paper);
    }
    * { box-sizing: border-box; }
    body { margin: 0; line-height: 1.7; -webkit-font-smoothing: antialiased; }
    main { max-width: 760px; margin: 0 auto; padding: 28px 20px 72px; }
    .breadcrumb { font-size: 13px; color: var(--muted); margin: 0 0 18px; }
    .breadcrumb a { color: inherit; }
    .section-label {
      margin: 0 0 6px;
      font-family: var(--font-mono);
      font-size: 11px;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--muted);
    }
    h1 { margin: 0 0 6px; font-size: clamp(26px, 4vw, 34px); line-height: 1.25; letter-spacing: -0.01em; }
    .role { margin: 0 0 18px; font-size: 15px; font-weight: 700; color: var(--signal); }
    .bio { margin: 0 0 18px; font-size: 16px; }
    .profile-links { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 36px; }
    .profile-links a {
      display: inline-block;
      padding: 8px 14px;
      border: 1px solid var(--ink);
      color: var(--ink);
      text-decoration: none;
      font-size: 14px;
      font-weight: 700;
    }
    .profile-links a:hover, .profile-links a:focus-visible { background: var(--ink); color: var(--paper); }
    section { margin: 0 0 36px; }
    h2 {
      margin: 0 0 12px;
      padding-bottom: 6px;
      border-bottom: 1px solid var(--line);
      font-size: 18px;
    }
    .work-list { list-style: none; margin: 0; padding: 0; }
    .work-list li {
      display: grid;
      grid-template-columns: 88px 1fr;
      gap: 4px 14px;
      padding: 10px 0;
      border-bottom: 1px solid var(--line);
      font-size: 15px;
    }
    .work-list time { font-family: var(--font-mono); font-size: 12px; color: var(--muted); padding-top: 3px; }
    .work-list a { color: var(--ink); text-decoration: none; font-weight: 600; }
    .work-list a:hover, .work-list a:focus-visible { text-decoration: underline; text-underline-offset: 3px; }
    .work-source { grid-column: 2; font-size: 12px; color: var(--muted); }
    .empty { color: var(--muted); font-size: 14px; }
    .contact-note { font-size: 14px; color: var(--muted); }
    .site-footer {
      display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px;
      max-width: 760px; margin: 0 auto; padding: 18px 20px 40px;
      border-top: 1px solid var(--line); font-size: 13px; color: var(--muted);
    }
    .site-footer a { color: inherit; }
    @media (max-width: 480px) {
      .work-list li { grid-template-columns: 1fr; gap: 2px; }
      .work-source { grid-column: 1; }
    }