:root{
    --paper: #EFE9DA;
    --paper-dark: #E4DBC4;
    --card: #F8F5EC;
    --ink: #221F16;
    --ink-soft: #58523F;
    --line: #CBC0A2;
    --green: #2F5233;
    --stamp-red: #A83232;
    --gold: #B8892B;
    --focus: #2B5876;
    --radius: 3px;
    --font-display: 'Fraunces', serif;
    --font-body: 'Source Sans 3', system-ui, sans-serif;
    --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
  }

  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:
      radial-gradient(ellipse at top left, rgba(184,137,43,0.06), transparent 55%),
      var(--paper);
    color:var(--ink);
    font-family:var(--font-body);
    line-height:1.5;
  }

  a{color:inherit;}
  .letterhead a{ text-underline-offset:3px; }
  .hero__actions a{ text-decoration:none; }

  ::selection{background:var(--gold); color:#1a1710;}

  :focus-visible{
    outline: 2.5px solid var(--focus);
    outline-offset: 2px;
  }

  /* ---------- letterhead ---------- */
  .letterhead{
    background:var(--ink);
    color:var(--paper);
    font-family:var(--font-mono);
    font-size:0.68rem;
    letter-spacing:0.04em;
  }
  .letterhead__inner{
    max-width:1180px;
    margin:0 auto;
    padding:8px 24px;
    display:flex;
    justify-content:space-between;
    flex-wrap:wrap;
    gap:6px;
    text-transform:uppercase;
    opacity:0.85;
  }

  /* ---------- hero ---------- */
  .hero{
    max-width:1180px;
    margin:0 auto;
    padding:56px 24px 40px;
    display:grid;
    grid-template-columns: 1.4fr 0.9fr;
    gap:32px;
    align-items:center;
    border-bottom:1px solid var(--line);
  }
  .hero__eyebrow{
    font-family:var(--font-mono);
    text-transform:uppercase;
    letter-spacing:0.12em;
    font-size:0.72rem;
    color:var(--green);
    margin:0 0 14px;
    font-weight:600;
  }
  .hero__title{
    font-family:var(--font-display);
    font-weight:600;
    font-size:clamp(2.6rem, 5vw, 4.2rem);
    line-height:0.98;
    margin:0 0 18px;
    letter-spacing:-0.01em;
  }
  .hero__period{
    font-family:var(--font-mono);
    font-size:1rem;
    color:var(--stamp-red);
    margin:0 0 18px;
    font-weight:500;
  }
  .hero__desc{
    max-width:46ch;
    color:var(--ink-soft);
    font-size:1.02rem;
    margin:0 0 26px;
  }
  .hero__actions{
    display:flex;
    align-items:center;
    gap:16px;
    flex-wrap:wrap;
  }
  .btn{
    font-family:var(--font-mono);
    font-size:0.82rem;
    text-transform:uppercase;
    letter-spacing:0.06em;
    padding:11px 20px;
    border-radius:var(--radius);
    border:1.5px solid var(--ink);
    background:transparent;
    color:var(--ink);
    cursor:pointer;
    transition:transform .15s ease, background .15s ease, color .15s ease;
  }
  .btn:hover{ background:var(--ink); color:var(--paper); }
  .btn:active{ transform:translateY(1px); }
  .btn--primary{ background:var(--green); border-color:var(--green); color:#fff; }
  .btn--primary:hover{ background:#24401f; }
  .hero__countdown{
    font-family:var(--font-mono);
    font-size:0.8rem;
    color:var(--ink-soft);
  }

  .hero__stamp-wrap{ display:flex; justify-content:center; }
  .stamp{ width:min(220px, 100%); height:auto; color:var(--stamp-red); transform:rotate(-9deg); }
  .stamp__ring-outer, .stamp__ring-inner{ fill:none; stroke:currentColor; stroke-width:2; }
  .stamp__ring-inner{ stroke-width:1; opacity:0.7; }
  .stamp__arc-text{ font-family:var(--font-mono); font-size:9.5px; fill:currentColor; letter-spacing:2px; }
  .stamp__center-big{ font-family:var(--font-display); font-weight:700; font-size:26px; fill:currentColor; }
  .stamp__center-small{ font-family:var(--font-mono); font-size:13px; fill:currentColor; letter-spacing:1px; }

  /* ---------- app / controls ---------- */
  .app{ max-width:1180px; margin:0 auto; padding:36px 24px 20px; }

  .controls{
    display:flex;
    flex-direction:column;
    gap:14px;
    margin-bottom:22px;
  }
  .search-wrap{
    display:flex;
    align-items:center;
    gap:10px;
    background:var(--card);
    border:1.5px solid var(--line);
    border-radius:var(--radius);
    padding:10px 14px;
    max-width:560px;
    color:var(--ink-soft);
  }
  .search-wrap input{
    border:none;
    background:transparent;
    outline:none;
    font-family:var(--font-body);
    font-size:0.95rem;
    color:var(--ink);
    width:100%;
  }

  .chips{ display:flex; flex-wrap:wrap; gap:8px; }
  .chip{
    display:inline-flex;
    align-items:center;
    gap:7px;
    font-family:var(--font-mono);
    font-size:0.72rem;
    text-transform:uppercase;
    letter-spacing:0.03em;
    padding:6px 11px 6px 9px;
    border-radius:999px;
    border:1.3px solid var(--line);
    background:var(--card);
    color:var(--ink-soft);
    cursor:pointer;
    transition:all .15s ease;
  }
  .chip__dot{ width:8px; height:8px; border-radius:50%; background:var(--chip-color); display:inline-block; }
  .chip.is-active{ border-color:var(--chip-color); color:var(--ink); background:color-mix(in srgb, var(--chip-color) 14%, var(--card)); }
  .chip:hover{ border-color:var(--chip-color); }

  /* ---------- month tabs (folder tabs) ---------- */
  .tabs{
    display:flex;
    gap:4px;
    border-bottom:2px solid var(--ink);
    margin-bottom:26px;
    overflow-x:auto;
  }
  .tab{
    font-family:var(--font-display);
    font-size:1.02rem;
    font-weight:500;
    background:var(--paper-dark);
    border:1.5px solid var(--line);
    border-bottom:none;
    color:var(--ink-soft);
    padding:10px 20px 12px;
    border-radius:8px 8px 0 0;
    cursor:pointer;
    position:relative;
    top:2px;
    display:flex;
    align-items:baseline;
    gap:8px;
    white-space:nowrap;
    transition:all .15s ease;
  }
  .tab__count{
    font-family:var(--font-mono);
    font-size:0.68rem;
    color:var(--ink-soft);
    background:rgba(0,0,0,0.06);
    padding:1px 6px;
    border-radius:999px;
  }
  .tab:hover{ color:var(--ink); }
  .tab.is-active{
    background:var(--card);
    color:var(--ink);
    border-color:var(--ink);
    border-bottom:2px solid var(--card);
    font-weight:600;
  }
  .tab.is-active .tab__count{ background:var(--green); color:#fff; }

  /* ---------- folio list ---------- */
  .folio-list{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:10px; }

  .folio{
    display:grid;
    grid-template-columns: 74px 1fr auto;
    gap:16px;
    align-items:start;
    background:var(--card);
    border:1px solid var(--line);
    border-left:4px solid var(--cat-color, var(--green));
    border-radius:var(--radius);
    padding:14px 16px;
    animation: fadeIn .25s ease both;
  }
  .folio.is-today{ box-shadow: 0 0 0 2px var(--stamp-red) inset; }
  .folio.is-past{ opacity:0.6; }

  @keyframes fadeIn{ from{ opacity:0; transform:translateY(3px);} to{opacity:1; transform:none;} }

  .folio__num{
    font-family:var(--font-mono);
    font-size:0.72rem;
    color:var(--ink-soft);
    padding-top:2px;
  }
  .folio__num b{ display:block; font-size:0.95rem; color:var(--ink); }

  .folio__body{ min-width:0; }
  .folio__title{
    margin:0 0 6px;
    font-size:0.98rem;
    font-weight:600;
    color:var(--ink);
    line-height:1.35;
  }
  .folio__meta{ display:flex; flex-wrap:wrap; gap:8px; align-items:center; }
  .badge{
    font-family:var(--font-mono);
    font-size:0.65rem;
    text-transform:uppercase;
    letter-spacing:0.04em;
    padding:2px 8px;
    border-radius:999px;
    background:rgba(0,0,0,0.06);
    color:var(--ink-soft);
  }
  .badge--rec{ background:rgba(168,50,50,0.12); color:var(--stamp-red); }
  .badge--today{ background:var(--stamp-red); color:#fff; }
  .badge--cat{ background:color-mix(in srgb, var(--cat-color) 18%, transparent); color:var(--cat-color); font-weight:600; }
  .folio__note{ font-size:0.8rem; color:var(--ink-soft); margin:6px 0 0; }

  .folio__date{
    font-family:var(--font-mono);
    font-size:0.82rem;
    color:var(--ink);
    text-align:right;
    white-space:nowrap;
    padding-top:2px;
  }
  .folio__date small{ display:block; color:var(--ink-soft); font-size:0.68rem; }

  .empty-state{
    font-family:var(--font-mono);
    color:var(--ink-soft);
    padding:30px 0;
  }

  .reconstruction-note{
    font-size:0.8rem;
    color:var(--ink-soft);
    border-top:1px dashed var(--line);
    margin-top:30px;
    padding-top:16px;
  }

  /* ---------- footer ---------- */
  .doc-footer{
    margin-top:40px;
    background:var(--ink);
    color:var(--paper);
  }
  .doc-footer__grid{
    max-width:1180px;
    margin:0 auto;
    padding:28px 24px;
    display:grid;
    grid-template-columns:repeat(auto-fit, minmax(220px, 1fr));
    gap:22px;
  }
  .doc-footer__label{
    font-family:var(--font-mono);
    text-transform:uppercase;
    font-size:0.65rem;
    letter-spacing:0.08em;
    color:var(--gold);
    margin:0 0 6px;
  }
  .doc-footer__name{ font-family:var(--font-display); font-size:1.05rem; margin:0 0 3px; }
  .doc-footer__role{ font-size:0.78rem; opacity:0.7; margin:0; }

  @media (max-width: 820px){
    .hero{ grid-template-columns:1fr; padding-top:36px; }
    .hero__stamp-wrap{ order:-1; margin-bottom:8px; }
    .stamp{ width:150px; }
    .folio{ grid-template-columns: 56px 1fr; }
    .folio__date{ grid-column:1 / -1; text-align:left; padding-top:6px; border-top:1px dashed var(--line); margin-top:6px; }
  }

  @media (prefers-reduced-motion: reduce){
    html{ scroll-behavior:auto; }
    .folio{ animation:none; }
  }