@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600&family=Barlow:wght@400;500;600;700;900&display=swap');

  :root {
    --bg:        #111214;
    --surface:   #1a1c20;
    --surface2:  #22252a;
    --border:    #2e3138;
    --red:       #e03131;
    --red-dim:   #8b1c1c;
    --green:     #2f9e44;
    --amber:     #e67700;
    --blue:      #1971c2;
    --text:      #d4d8e0;
    --text-dim:  #7a808c;
    --text-mute: #4a5060;
    --code-bg:   #0d0f12;
    --mono:      'JetBrains Mono', monospace;
    --sans:      'Barlow', sans-serif;
  }

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

  html { scroll-behavior: smooth; }

  body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    font-size: 15px;
    line-height: 1.7;
    min-height: 100vh;
  }

  /* ── HEADER ── */
  header {
    background: var(--surface);
    border-bottom: 2px solid var(--red);
    padding: 36px 0 28px;
    text-align: center;
  }
  header .eyebrow {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--red);
    margin-bottom: 10px;
  }
  header h1 {
    font-size: clamp(24px, 4vw, 40px);
    font-weight: 900;
    color: #fff;
    letter-spacing: -.02em;
    line-height: 1.1;
  }
  header .sub {
    margin-top: 10px;
    color: var(--text-dim);
    font-size: 14px;
  }
  .version-badge {
    display: inline-block;
    margin-top: 12px;
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: var(--green);
    background: rgba(47,158,68,.12);
    border: 1px solid rgba(47,158,68,.35);
    border-radius: 3px;
    padding: 3px 10px;
  }

  /* ── NAV ── */
  nav {
    background: var(--surface2);
    border-bottom: 1px solid var(--border);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 100;
    overflow-x: auto;
    white-space: nowrap;
  }
  nav ul {
    list-style: none;
    display: inline-flex;
    padding: 0 16px;
  }
  nav a {
    display: block;
    padding: 12px 14px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--text-dim);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: color .15s, border-color .15s;
  }
  nav a:hover { color: #fff; border-bottom-color: var(--red); }

  /* ── LAYOUT ── */
  .wrap {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 20px 80px;
  }

  /* ── PART HEADER ── */
  .part {
    margin-top: 60px;
    padding: 20px 24px;
    background: var(--surface);
    border-left: 4px solid var(--red);
    border-radius: 0 4px 4px 0;
  }
  .part-label {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--red);
    margin-bottom: 4px;
  }
  .part h2 {
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    letter-spacing: -.01em;
  }

  /* ── STEP ── */
  .step {
    margin-top: 36px;
  }
  .step-head {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 12px;
  }
  .step-num {
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 600;
    color: var(--red);
    background: rgba(224,49,49,.12);
    border: 1px solid rgba(224,49,49,.3);
    border-radius: 3px;
    padding: 2px 8px;
    white-space: nowrap;
  }
  .step h3 {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
  }

  /* ── SECTION LABEL (sub-heading inside step) ── */
  .section-label {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin: 20px 0 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
  }

  /* ── TOOL CARDS ── */
  .tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
    margin: 18px 0;
  }
  .tool-card {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-top: 2px solid var(--red);
    border-radius: 4px;
    padding: 16px 18px;
  }
  .tool-card .t-name {
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 600;
    color: var(--red);
    letter-spacing: .1em;
    text-transform: uppercase;
    margin-bottom: 4px;
  }
  .tool-card .t-ver {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--green);
    margin-bottom: 8px;
  }
  .tool-card .t-desc {
    font-size: 13px;
    color: var(--text);
    line-height: 1.55;
  }
  .tool-card .t-note {
    margin-top: 8px;
    font-size: 12px;
    color: var(--text-dim);
  }
  .tool-card .t-access {
    margin-top: 10px;
    font-family: var(--mono);
    font-size: 10px;
    color: var(--amber);
    letter-spacing: .08em;
    text-transform: uppercase;
  }

  /* ── PROSE ── */
  p { margin-bottom: 10px; color: var(--text); }
  p:last-child { margin-bottom: 0; }

  /* ── CODE ── */
  code {
    font-family: var(--mono);
    font-size: 12.5px;
    background: var(--code-bg);
    color: #a8d8a8;
    padding: 2px 6px;
    border-radius: 3px;
  }
  pre {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 16px 18px;
    margin: 12px 0;
    overflow-x: auto;
  }
  pre code {
    background: none;
    padding: 0;
    color: #a8d8a8;
    font-size: 13px;
    line-height: 1.65;
  }

  /* ── LISTS ── */
  ul, ol {
    padding-left: 22px;
    margin: 8px 0 10px;
  }
  li { margin-bottom: 5px; }
  li::marker { color: var(--red); }

  /* ── CHECK / CROSS ── */
  .checks { list-style: none; padding: 0; margin: 8px 0; }
  .checks li {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    padding: 4px 0;
    font-size: 14px;
  }
  .checks li .icon { flex-shrink: 0; font-size: 13px; margin-top: 2px; }
  .checks li.ok .icon { color: var(--green); }
  .checks li.no .icon { color: var(--red); }

  /* ── CALLOUTS ── */
  .callout {
    border-radius: 4px;
    padding: 12px 16px;
    margin: 14px 0;
    font-size: 14px;
    display: flex;
    gap: 12px;
    align-items: flex-start;
    border-left: 3px solid;
  }
  .callout .icon { font-size: 15px; flex-shrink: 0; margin-top: 1px; }
  .callout.red   { background: rgba(224,49,49,.08);  border-color: var(--red);   }
  .callout.green { background: rgba(47,158,68,.08);  border-color: var(--green); }
  .callout.amber { background: rgba(230,119,0,.08);  border-color: var(--amber); }
  .callout.blue  { background: rgba(25,113,194,.08); border-color: var(--blue);  }
  .callout.grey  { background: var(--surface2);      border-color: var(--border);}
  .callout strong { color: #fff; display: block; margin-bottom: 3px; font-size: 13px; letter-spacing: .04em; text-transform: uppercase; font-family: var(--mono);}

  /* ── TABLES ── */
  .table-wrap { overflow-x: auto; margin: 14px 0; }
  table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
  thead th {
    background: var(--surface2);
    color: var(--text-dim);
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: .1em;
    text-transform: uppercase;
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
  }
  tbody tr { border-bottom: 1px solid var(--border); }
  tbody tr:last-child { border-bottom: none; }
  tbody tr:nth-child(even) { background: rgba(255,255,255,.02); }
  tbody td { padding: 9px 14px; vertical-align: top; }
  td:first-child { font-weight: 600; color: #fff; white-space: nowrap; }
  td code { font-size: 12px; }

  /* ── PROMPT BOX ── */
  .prompt-box {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-top: 2px solid var(--red);
    border-radius: 4px;
    margin: 14px 0;
  }
  .prompt-box .prompt-label {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: var(--red);
    padding: 10px 16px 6px;
    border-bottom: 1px solid var(--border);
  }
  .prompt-box pre {
    border: none;
    border-radius: 0 0 4px 4px;
    margin: 0;
    background: transparent;
  }

  /* ── FILE TREE ── */
  .file-tree {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 16px 20px;
    font-family: var(--mono);
    font-size: 13px;
    line-height: 1.8;
    color: #a8d8a8;
    margin: 12px 0;
  }
  .file-tree .comment { color: var(--text-mute); }
  .file-tree .folder { color: #a8c4e8; }
  .file-tree .changed { color: var(--green); }

  /* ── SUMMARY BOX ── */
  .summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin: 16px 0;
  }
  .summary-card {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 14px 16px;
  }
  .summary-card .s-icon { font-size: 20px; margin-bottom: 6px; }
  .summary-card .s-label { font-family: var(--mono); font-size: 11px; color: var(--red); letter-spacing: .1em; text-transform: uppercase; margin-bottom: 4px; }
  .summary-card .s-text { font-size: 13px; color: var(--text); }

  /* ── CHANGE NOTICE ── */
  .change-notice {
    background: rgba(47,158,68,.06);
    border: 1px solid rgba(47,158,68,.25);
    border-left: 3px solid var(--green);
    border-radius: 4px;
    padding: 10px 14px;
    margin: 12px 0;
    font-size: 13px;
    font-family: var(--mono);
    color: var(--green);
  }
  .change-notice strong { color: #5de87a; }

  /* ── DIVIDER ── */
  hr { border: none; border-top: 1px solid var(--border); margin: 40px 0; }

  /* ── FOOTER ── */
  footer {
    text-align: center;
    padding: 30px 20px;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--text-mute);
    border-top: 1px solid var(--border);
  }


  /* ── AI PROMPT SYSTEM ── */
  .ai-hero {
    margin-top: 40px;
    padding: 22px 24px;
    background: linear-gradient(135deg, rgba(224,49,49,.13), rgba(34,37,42,.98));
    border: 1px solid rgba(224,49,49,.35);
    border-left: 4px solid var(--red);
    border-radius: 6px;
  }
  .ai-hero h2 {
    color: #fff;
    font-size: 24px;
    margin-bottom: 8px;
  }
  .ai-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 14px;
  }
  .ai-btn {
    appearance: none;
    border: none;
    cursor: pointer;
    background: linear-gradient(135deg, var(--red), var(--red-dim));
    color: #fff;
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
    padding: 11px 14px;
    border-radius: 4px;
  }
  .ai-btn.secondary {
    background: var(--surface2);
    border: 1px solid var(--border);
    color: var(--text);
  }
  .ai-btn:hover { filter: brightness(1.08); }
  .ai-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-top: 2px solid var(--red);
    border-radius: 4px;
    padding: 18px;
    margin: 18px 0;
  }
  .ai-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
  @media (max-width: 760px) {
    .ai-grid { grid-template-columns: 1fr; }
  }
  .ai-field label {
    display: block;
    font-family: var(--mono);
    color: var(--text-dim);
    font-size: 10px;
    letter-spacing: .12em;
    text-transform: uppercase;
    margin-bottom: 5px;
  }
  .ai-field input,
  .ai-field select,
  .ai-field textarea {
    width: 100%;
    background: var(--code-bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 10px 12px;
    font-family: var(--sans);
    font-size: 14px;
  }
  .ai-field textarea { min-height: 86px; resize: vertical; }
  .ai-textarea {
    width: 100%;
    min-height: 420px;
    resize: vertical;
    background: var(--code-bg);
    color: #a8d8a8;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 16px 18px;
    font-family: var(--mono);
    font-size: 12.5px;
    line-height: 1.65;
    white-space: pre-wrap;
  }
  .ai-output { min-height: 270px; }
  .copy-status {
    min-height: 18px;
    color: var(--green);
    font-family: var(--mono);
    font-size: 11px;
    margin-top: 8px;
  }

  /* ── MULTI-PAGE HOME ── */
  .home-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    margin: 28px 0;
  }
  .home-card {
    display: block;
    background: var(--surface);
    border: 1px solid var(--border);
    border-top: 3px solid var(--red);
    border-radius: 6px;
    padding: 22px;
    color: var(--text);
    text-decoration: none;
    min-height: 210px;
    transition: transform .15s ease, border-color .15s ease, background .15s ease;
  }
  .home-card:hover {
    transform: translateY(-2px);
    border-color: rgba(224,49,49,.7);
    background: var(--surface2);
  }
  .home-card .card-icon { font-size: 30px; margin-bottom: 12px; }
  .home-card h2 { color: #fff; font-size: 20px; margin-bottom: 8px; }
  .home-card p { color: var(--text-dim); font-size: 14px; }
  .page-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 16px 0 4px;
  }
  .page-links a {
    color: #fff;
    text-decoration: none;
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .08em;
    text-transform: uppercase;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 8px 10px;
  }
  .page-links a:hover { border-color: var(--red); color: #fff; }
  nav a.active { color: #fff; border-bottom-color: var(--red); }