:root{
    --bg:#14141a;
    --bg-raised:#1a1a22;
    --ink:#e9e7e1;
    --muted:#86848c;
    --faint:#4d4b54;
    --rule:rgba(255,255,255,0.07);
    --accent:#ff6a39;
  }

  *{ box-sizing:border-box; }

  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:'Newsreader', Georgia, serif;
    -webkit-font-smoothing:antialiased;
  }

  .page-container {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    gap: 40px;
  }

  .sidebar {
    width: 200px;
    flex-shrink: 0;
    position: sticky;
    top: 48px;
    height: max-content;
    padding: 48px 0 0 24px;
  }

  .sidebar-header {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--ink);
    text-transform: uppercase;
    letter-spacing: .06em;
    font-family: 'IBM Plex Mono', monospace;
  }

  .group-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .group-list li {
    cursor: pointer;
    font-size: 16px;
    color: var(--muted);
    transition: color 0.2s;
  }

  .group-list li:hover {
    color: var(--accent);
  }

  .group-list li.active {
    color: var(--accent);
    font-weight: 600;
  }

  .wrap.main-content {
    flex-grow: 1;
    max-width: 760px;
    margin: 0;
    padding: 0 24px 120px;
  }

  @media (max-width: 768px) {
    .page-container {
      flex-direction: column;
      gap: 20px;
    }
    .sidebar {
      width: 100%;
      position: relative;
      top: 0;
      padding: 24px 24px 0;
    }
    .group-list {
      flex-direction: row;
      flex-wrap: wrap;
    }
  }

  /* ---- header ---- */
  header{
    display:flex;
    align-items:baseline;
    justify-content:space-between;
    padding:48px 0 20px;
    border-bottom:1px solid var(--rule);
  }
  .site-title{
    font-size:26px;
    font-weight:600;
    letter-spacing:-0.01em;
    margin:0;
  }
  .site-title .dot{ color:var(--accent); }
  .updated{
    font-family:'IBM Plex Mono', monospace;
    font-size:11px;
    letter-spacing:.04em;
    color:var(--faint);
    text-transform:uppercase;
    white-space:nowrap;
  }

  /* ---- date marker ---- */
  .day-marker{
    font-family:'IBM Plex Mono', monospace;
    font-size:11px;
    letter-spacing:.12em;
    text-transform:uppercase;
    color:var(--muted);
    padding:28px 0 12px;
  }

  /* ---- feed list ---- */
  ol.feed{
    list-style:none;
    margin:0;
    padding:0;
  }

  .item{
    position:relative;
    padding:18px 0 18px 22px;
    border-bottom:1px solid var(--rule);
  }
  .item:last-child{ border-bottom:none; }

  /* signature: ticker mark — a short accent dash that
     extends into a full rule on hover, like a feed pulse */
  .item::before{
    content:"";
    position:absolute;
    left:0;
    top:30px;
    width:8px;
    height:1px;
    background:var(--faint);
    transition:width .25s ease, background .25s ease;
  }
  .item:hover::before{
    width:22px;
    background:var(--accent);
  }

  .item a.title-link{
    color:var(--ink);
    text-decoration:none;
    font-size:18px;
    font-weight:500;
    line-height:1.35;
    display:block;
  }
  .item a.title-link:hover{
    color:var(--accent);
  }
  .item a.title-link:visited{
    color:var(--muted);
  }

  .meta{
    margin-top:7px;
    font-family:'IBM Plex Mono', monospace;
    font-size:12px;
    color:var(--muted);
    letter-spacing:.01em;
    display:flex;
    flex-wrap:wrap;
    gap:0;
  }
  .meta a{
    color:var(--muted);
    text-decoration:none;
  }
  .meta a:hover{ color:var(--ink); }
  .meta .src{ color:var(--accent); }
  .meta .sep{
    margin:0 7px;
    color:var(--faint);
  }

  /* footer */
  footer{
    margin-top:36px;
    padding-top:18px;
    border-top:1px solid var(--rule);
    font-family:'IBM Plex Mono', monospace;
    font-size:11px;
    color:var(--faint);
    text-transform:uppercase;
    letter-spacing:.06em;
  }

  @media (max-width:520px){
    header{ flex-direction:column; align-items:flex-start; gap:6px; }
    .item a.title-link{ font-size:17px; }
  }