*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --bg: #0c0e0c;
      --green: #3ddc84;
      --green-dim: rgba(61, 220, 132, 0.13);
      --text: #d4ddd4;
      --muted: #546054;
      --border: #1e251e;
      --mono: 'Geist Mono', monospace;
      --sans: 'Geist', sans-serif;
    }

    body {
      background: var(--bg);
      color: var(--text);
      font-family: var(--sans);
      font-size: 15px;
      line-height: 1.6;
      min-height: 100vh;
    }

    a { color: var(--green); text-decoration: none; }
    a:hover { text-decoration: underline; }

    .page {
      max-width: 700px;
      margin: 0 auto;
      padding: 64px 24px 96px;
    }

    /* terminal */
    .term {
      background: #080a08;
      border: 1px solid var(--border);
      border-radius: 6px;
      overflow: hidden;
      margin-bottom: 56px;
      font-family: var(--mono);
    }

    .term-bar {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 10px 14px;
      border-bottom: 1px solid var(--border);
      background: #0a0c0a;
    }

    .dot { width: 10px; height: 10px; border-radius: 50%; }
    .dot.r { background: #ff5f57; }
    .dot.y { background: #febc2e; }
    .dot.g { background: #28c840; }

    .term-title { font-size: 11px; color: var(--muted); margin: 0 auto; letter-spacing: 0.04em; }

    .term-body { padding: 20px 22px 28px; font-size: 13px; line-height: 1.75; overflow-x: auto; }

    .t-row { display: flex; gap: 10px; opacity: 0; transition: opacity 0.1s;     align-items: center;}
    .blank  { height: 6px; opacity: 0; transition: opacity 0.1s; }

    .ban { color: var(--green); white-space: pre; font-size: 11.5px; line-height: 1.4; }
    .sep { color: var(--muted); white-space: pre; font-size: 11.5px; line-height: 1.4; }
    .out { color: var(--muted); }
    .ok  { color: var(--green); }
    .inp { color: #a8d8b0; }
    .prompt { color: var(--green); flex-shrink: 0; user-select: none; }

    .cursor {
      display: inline-block; width: 7px; height: 13px;
      background: var(--green); vertical-align: middle; margin-left: 1px;
      animation: blink 1s step-end infinite;
    }
    @keyframes blink { 50% { opacity: 0; } }

    /* content */
    h1 {
      font-size: 26px; font-weight: 600; letter-spacing: -0.02em;
      color: #e8f0e8; margin-bottom: 8px;
    }

    .tagline { color: var(--muted); font-size: 15px; margin-bottom: 36px; }

    .actions { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 60px; }

    .btn {
      font-family: var(--mono); font-size: 13px; padding: 8px 16px;
      border: 1px solid var(--border); color: var(--text); cursor: pointer;
      border-radius: 4px; transition: border-color .2s, color .2s;
      display: inline-flex; align-items: center; gap: 6px;
    }
    .btn:hover { border-color: var(--green); color: var(--green); text-decoration: none; }
    .btn.primary { background: var(--green); color: #050805; border-color: var(--green); font-weight: 600; }
    .btn.primary:hover { background: #5aeaa0; border-color: #5aeaa0; color: #050805; }

    .section { margin-bottom: 52px; }

    h2 {
      font-size: 11px; font-weight: 600; font-family: var(--mono);
      color: var(--green); letter-spacing: 0.08em; text-transform: uppercase;
      margin-bottom: 18px;
    }

    p { color: var(--text); margin-bottom: 12px; }
    p:last-child { margin-bottom: 0; }

    ul { list-style: none; }
    ul li {
      color: var(--text); padding: 7px 0;
      border-bottom: 1px solid var(--border);
      font-size: 14px; display: flex; align-items: baseline; gap: 10px;
    }
    ul li:last-child { border-bottom: none; }
    ul li::before { content: '—'; color: var(--muted); flex-shrink: 0; }

    .steps { display: flex; flex-direction: column; }
    .step { display: flex; gap: 20px; padding: 14px 0; border-bottom: 1px solid var(--border); }
    .step:last-child { border-bottom: none; }
    .step-n { font-family: var(--mono); font-size: 12px; color: var(--muted); flex-shrink: 0; width: 22px; padding-top: 1px; }
    .step-body { font-size: 14px; }
    .step-body strong { color: #e8f0e8; font-weight: 600; display: block; margin-bottom: 2px; }
    .step-body span { color: var(--muted); }

    code {
      font-family: var(--mono); font-size: 12px;
      background: var(--green-dim); color: var(--green);
      padding: 1px 5px; border-radius: 3px;
    }

    .codeblock {
      background: #080a08; border: 1px solid var(--border);
      border-radius: 4px; padding: 18px 20px;
      font-family: var(--mono); font-size: 13px;
      color: var(--text); line-height: 1.8;
      position: relative; overflow-x: auto;
      margin-bottom: 10px;
    }
    .codeblock:last-child { margin-bottom: 0; }
    .codeblock .c { color: var(--muted); }
    .codeblock .g { color: var(--green); }

    .copy {
      position: absolute; top: 12px; right: 12px;
      font-family: var(--mono); font-size: 10px; color: var(--muted);
      background: none; border: 1px solid var(--border);
      padding: 3px 8px; cursor: pointer; border-radius: 3px;
      transition: color .2s, border-color .2s;
    }
    .copy:hover, .copy.done { color: var(--green); border-color: var(--green); }

    .notice {
      border-left: 2px solid var(--border);
      padding: 10px 16px; color: var(--muted);
      font-size: 13px; line-height: 1.7;
    }

    footer {
      border-top: 1px solid var(--border); padding-top: 28px; margin-top: 60px;
      display: flex; justify-content: space-between; align-items: center;
      flex-wrap: wrap; gap: 12px;
    }
    footer span, footer a { font-family: var(--mono); font-size: 12px; color: var(--muted); }
    footer a:hover { color: var(--green); text-decoration: none; }