:root {
    --bg: #1e1e1e; --panel: #262626; --border: #3a3a3a;
    --text: #e8e8e8; --dim: #9aa0a6; --accent: #4caf50; --link: #6db3f2;
  }
  * { box-sizing: border-box; margin: 0; }
  .lang { text-align: right; padding: 12px 4px 0; }
  .lang a {
    display: inline-flex; align-items: center; gap: 7px;
    color: var(--dim); text-decoration: none; font-size: 0.85rem;
    border: 1px solid var(--border); border-radius: 6px;
    padding: 5px 10px; background: var(--panel);
  }
  .lang a:hover { color: var(--text); border-color: var(--accent); }
  .lang svg { display: block; border-radius: 2px; }
  body {
    background: var(--bg); color: var(--text);
    font-family: "Segoe UI", system-ui, sans-serif;
    line-height: 1.55; padding: 0 16px 64px;
  }
  main { max-width: 860px; margin: 0 auto; }
  header { text-align: center; padding: 72px 0 32px; }
  h1 { font-size: 2.6rem; letter-spacing: -0.5px; }
  h1 .ver { color: var(--accent); font-size: 1rem; vertical-align: super; }
  .tagline { color: var(--dim); font-size: 1.15rem; margin-top: 10px; }
  .actions { margin-top: 28px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
  .btn {
    display: inline-block; padding: 12px 22px; border-radius: 8px;
    text-decoration: none; font-weight: 600; border: 1px solid var(--border);
  }
  .btn.primary { background: var(--accent); color: #0b1a0c; border-color: var(--accent); }
  .btn.ghost { color: var(--text); background: var(--panel); }
  .btn small { display: block; font-weight: 400; font-size: 0.75rem; opacity: 0.8; }
  .note {
    max-width: 560px; margin: 22px auto 0; padding: 12px 16px;
    background: var(--panel); border: 1px solid var(--border);
    border-left: 3px solid var(--accent); border-radius: 6px;
    color: var(--dim); font-size: 0.85rem; text-align: left;
  }
  .note b { color: var(--text); }
  .note code { color: var(--text); }
  .ghcallout {
    margin-top: 26px; padding: 14px 20px; border-radius: 8px;
    background: var(--panel); border: 1px solid var(--accent);
    font-size: 1.02rem;
  }
  .ghcallout a { color: var(--accent); font-weight: 700; }
  .shotwrap {
    position: relative; max-width: 520px; margin: 0 auto;
  }
  .shotwrap figcaption {
    margin-top: 10px; color: var(--dim); font-size: 0.82rem;
    text-align: center;
  }
  .tag {
    position: absolute; left: 8px; transform: translateY(-50%);
    padding: 2px 10px; border-radius: 11px; font-size: 0.72rem;
    background: rgba(20,20,20,.88); border: 1px solid var(--border);
    color: var(--text); white-space: nowrap;
  }
  .tag.ours {
    background: var(--accent); border-color: var(--accent);
    color: #0b1a0c; font-weight: 700;
  }
  section { margin-top: 56px; }
  h2 { font-size: 1.3rem; margin-bottom: 14px; }
  .shot {
    display: block; width: 100%;
    border: 1px solid var(--border); border-radius: 8px;
    image-rendering: pixelated;  /* crisp upscale of the small UI shot */
  }
  .lede { color: var(--dim); max-width: 660px; margin: 0 auto 22px; }
  .lede.small { font-size: 0.85rem; margin-top: 4px; }
  .barmock {
    position: relative; max-width: 430px; margin: 0 auto 18px;
    border: 1px solid var(--border); border-radius: 6px;
    background: #141414; overflow: hidden;
    font-family: Consolas, "Courier New", monospace;
  }
  .barmock .fill {
    position: absolute; top: 4px; bottom: 4px; left: 4px; width: 53%;
    background: rgba(76,175,80,.22); border-radius: 3px;
  }
  .barmock .rows {
    position: relative; display: flex; flex-direction: column;
    gap: 4px; padding: 12px 0; text-align: center;
    font-size: 0.95rem; letter-spacing: 0.5px;
  }
  .barmock .rows .t { color: var(--accent); font-weight: 700; }
  .scenarios {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 10px; max-width: 660px; margin: 0 auto 18px;
  }
  .scenario {
    background: var(--panel); border: 1px solid var(--border);
    border-radius: 8px; padding: 10px 14px; text-align: center;
  }
  .scenario b { display: block; font-size: 0.85rem; font-weight: 600; }
  .scenario span {
    color: var(--accent); font-weight: 700; font-size: 1.1rem;
    font-family: Consolas, "Courier New", monospace;
  }
  .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; }
  .card { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 16px; }
  .card h3 { font-size: 0.95rem; margin-bottom: 6px; }
  .card p { color: var(--dim); font-size: 0.9rem; }
  footer { margin-top: 64px; text-align: center; color: var(--dim); font-size: 0.85rem; }
  footer a { color: var(--link); }
  code { background: var(--panel); border-radius: 4px; padding: 1px 6px; }