:root{
    --cover:#1B4332;
    --cover-dark:#123024;
    --gold:#C9A227;
    --gold-bright:#E4C158;
    --paper:#F4EEDC;
    --paper-line:#D9CFAF;
    --ink:#1F3B3A;
    --ink-soft:#4B6360;
    --stamp-red:#B33A3A;
    --stamp-green:#2F6B4F;
  }
  *{box-sizing:border-box;}
  html,body{margin:0;padding:0;}
  body{
    background:var(--cover-dark);
    background-image:
      radial-gradient(circle at 15% 10%, rgba(255,255,255,0.04), transparent 40%),
      radial-gradient(circle at 85% 90%, rgba(255,255,255,0.03), transparent 40%);
    color:var(--ink);
    font-family:'Inter', sans-serif;
    min-height:100vh;
    padding:28px 16px 60px;
  }
  .wrap{max-width:900px;margin:0 auto;}

  /* ---------- Header : passbook cover ---------- */
  header.cover{
    background:linear-gradient(180deg, var(--cover) 0%, var(--cover-dark) 100%);
    border-radius:14px;
    padding:34px 30px 30px;
    position:relative;
    box-shadow:0 18px 40px -18px rgba(0,0,0,0.6), inset 0 0 0 1px rgba(201,162,39,0.25);
    overflow:hidden;
  }
  header.cover::before{
    content:"";
    position:absolute; inset:10px;
    border:1px solid rgba(201,162,39,0.35);
    border-radius:8px;
    pointer-events:none;
  }
  .eyebrow{
    font-family:'IBM Plex Mono', monospace;
    letter-spacing:.16em; text-transform:uppercase; font-size:11px;
    color:var(--gold-bright); margin:0 0 10px;
  }
  h1.title{
    font-family:'Source Serif 4', serif; font-weight:700;
    font-size:clamp(26px, 5vw, 40px); color:var(--paper);
    margin:0 0 8px; line-height:1.1;
  }
  .subtitle{ color:#CFE0D6; font-size:14.5px; max-width:560px; line-height:1.55; margin:0; }
  .book-number{
    position:absolute; top:28px; right:30px; text-align:right;
    font-family:'IBM Plex Mono', monospace; font-size:11px; color:rgba(228,193,88,0.8);
  }

  /* ---------- Ad slots ---------- */
  .ad-slot{
    margin:22px 0; border:1px dashed rgba(228,193,88,0.35); border-radius:10px;
    background:rgba(255,255,255,0.02); color:#9FB3AC;
    font-family:'IBM Plex Mono', monospace; font-size:11.5px; letter-spacing:.04em;
    text-align:center; display:flex; align-items:center; justify-content:center; min-height:90px;
  }
  .ad-slot.rectangle{min-height:250px; max-width:300px; margin-left:auto; margin-right:auto;}
  .ad-slot span{opacity:.75;}

  /* ---------- Site navigation (index dividers) ---------- */
  .site-nav{
    display:flex; flex-wrap:wrap; gap:6px; margin-top:22px; padding:0 4px;
  }
  .nav-link{
    font-family:'Source Serif 4', serif; font-weight:600; font-size:14px;
    padding:12px 18px 10px; border:none; border-radius:8px 8px 0 0;
    background:rgba(244,238,220,0.55); color:var(--ink-soft);
    cursor:pointer; position:relative; top:2px; text-decoration:none; display:inline-block;
    transition:background .15s ease, color .15s ease;
  }
  .nav-link .num{
    font-family:'IBM Plex Mono', monospace; font-size:10px;
    display:block; letter-spacing:.1em; opacity:.7; margin-bottom:2px;
  }
  .nav-link.active{ background:var(--paper); color:var(--ink); box-shadow:0 -2px 10px rgba(0,0,0,0.12); }
  .nav-link:not(.active):hover{ background:rgba(244,238,220,0.8); }

  /* ---------- Page ---------- */
  .page{
    background:var(--paper);
    border-radius:0 10px 10px 10px;
    position:relative;
    padding:26px 24px 24px;
    box-shadow:0 14px 30px -16px rgba(0,0,0,0.55);
    display:block;
    animation:fadeIn .3s ease;
  }
  @keyframes fadeIn{from{opacity:0; transform:translateY(4px);} to{opacity:1; transform:translateY(0);}}
  .page.ruled{
    background-image:repeating-linear-gradient(to bottom, transparent 0, transparent 33px, var(--paper-line) 34px);
    background-position:0 74px;
  }
  .page-head{
    display:flex; align-items:baseline; justify-content:space-between;
    margin-bottom:18px; padding-bottom:12px; border-bottom:2px solid var(--ink);
  }
  .page-head h2{ font-family:'Source Serif 4', serif; font-size:19px; margin:0; color:var(--ink); }
  .page-tag{
    font-family:'IBM Plex Mono', monospace; font-size:10.5px; color:var(--ink-soft);
    text-transform:uppercase; letter-spacing:.08em;
  }

  /* ---------- Simple calculator ---------- */
  .calc-display{
    background:var(--ink); color:var(--paper); font-family:'IBM Plex Mono', monospace;
    font-size:28px; text-align:right; padding:16px 14px; border-radius:6px;
    margin-bottom:12px; min-height:56px; letter-spacing:.02em; overflow-x:auto; white-space:nowrap;
  }
  .calc-grid{ display:grid; grid-template-columns:repeat(4, 1fr); gap:8px; max-width:360px; }
  .calc-grid button{
    font-family:'IBM Plex Mono', monospace; font-size:16px; padding:14px 0; border-radius:6px;
    border:1px solid var(--paper-line); background:#fff; color:var(--ink); cursor:pointer;
    transition:transform .06s ease, background .15s ease;
  }
  .calc-grid button:hover{background:#EFE7CE;}
  .calc-grid button:active{transform:scale(0.95);}
  .calc-grid button.op{background:var(--cover); color:var(--paper); border-color:var(--cover);}
  .calc-grid button.op:hover{background:var(--cover-dark);}
  .calc-grid button.eq{background:var(--gold); color:var(--cover-dark); border-color:var(--gold); font-weight:700;}
  .calc-grid button.eq:hover{background:var(--gold-bright);}
  .calc-grid button.wide{grid-column:span 2;}

  /* ---------- Forms (shared) ---------- */
  .grid2{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
  @media (max-width:560px){ .grid2{grid-template-columns:1fr;} }
  .field{margin-bottom:14px;}
  .field label{ display:block; font-size:12.5px; color:var(--ink-soft); margin-bottom:5px; font-weight:600; }
  .field input, .field select{
    width:100%; font-family:'IBM Plex Mono', monospace; font-size:14.5px; padding:10px 11px;
    border-radius:6px; border:1px solid var(--paper-line); background:#fff; color:var(--ink);
  }
  .field input:focus, .field select:focus{outline:2px solid var(--gold); outline-offset:1px;}
  .mode-toggle{
    display:flex; flex-wrap:wrap; gap:6px; margin-bottom:16px;
    background:#fff; padding:4px; border-radius:8px; border:1px solid var(--paper-line);
  }
  .mode-toggle button{
    flex:1 1 auto; min-width:120px; padding:9px 6px; font-size:12px; font-weight:600;
    border:none; border-radius:5px; background:transparent; color:var(--ink-soft);
    cursor:pointer; font-family:'Inter', sans-serif;
  }
  .mode-toggle button.active{background:var(--cover); color:var(--paper);}

  .btn-primary{
    padding:13px 22px; background:var(--stamp-red); color:#fff; border:none;
    border-radius:6px; font-weight:700; font-size:14px; cursor:pointer; letter-spacing:.02em;
    font-family:'Inter', sans-serif; transition:background .15s ease, transform .06s ease;
  }
  .btn-primary:hover{background:#9c2f2f;}
  .btn-primary:active{transform:scale(0.98);}
  .btn-primary.wfull{width:100%;}
  .btn-ghost{
    padding:8px 14px; background:transparent; border:1px solid var(--paper-line); color:var(--ink-soft);
    border-radius:6px; font-size:12.5px; cursor:pointer; font-family:'Inter', sans-serif;
  }
  .btn-ghost:hover{background:#fff;}

  .result-area{ margin-top:18px; }
  .result-card{
    position:relative; border:1px solid var(--paper-line); background:rgba(255,255,255,0.55);
    border-radius:8px; padding:18px 16px 16px; animation:fadeIn .3s ease; margin-bottom:12px;
  }
  .result-line{
    display:flex; justify-content:space-between; align-items:baseline; gap:10px;
    font-family:'IBM Plex Mono', monospace; font-size:13px; padding:4px 0; color:var(--ink-soft);
  }
  .result-line b{color:var(--ink); font-size:15px; text-align:right;}
  .stamp{
    position:absolute; top:8px; right:12px; width:104px; height:104px;
    border:3px solid var(--stamp-red); border-radius:50%;
    display:flex; align-items:center; justify-content:center; color:var(--stamp-red);
    font-family:'IBM Plex Mono', monospace; font-weight:700; font-size:12.5px;
    text-align:center; text-transform:uppercase; transform:rotate(-14deg) scale(0); opacity:0;
    line-height:1.25; animation:stamp .45s cubic-bezier(.2,1.6,.4,1) forwards; animation-delay:.15s;
    mix-blend-mode:multiply;
  }
  .stamp.green{ border-color:var(--stamp-green); color:var(--stamp-green); }
  @keyframes stamp{
    0%{transform:rotate(-14deg) scale(2.2); opacity:0;}
    60%{opacity:1;}
    100%{transform:rotate(-14deg) scale(1); opacity:.85;}
  }
  .note{ font-size:11.5px; color:var(--ink-soft); margin-top:10px; line-height:1.5; }
  .suggestion-title{
    font-family:'Source Serif 4', serif; font-size:14.5px; margin:16px 0 8px; color:var(--ink);
  }
  .suggestion{
    border-left:3px solid var(--gold); background:rgba(201,162,39,0.08);
    padding:10px 12px; border-radius:0 6px 6px 0; margin-bottom:8px; font-size:13px; line-height:1.5;
  }
  .suggestion b{ color:var(--ink); }

  /* ---------- Buku Kas ---------- */
  .kas-summary{ display:grid; grid-template-columns:repeat(3,1fr); gap:10px; margin-bottom:18px; }
  @media (max-width:640px){ .kas-summary{grid-template-columns:1fr;} }
  .kas-card{
    background:#fff; border:1px solid var(--paper-line); border-radius:8px; padding:12px 14px;
  }
  .kas-card .lbl{ font-size:11px; text-transform:uppercase; letter-spacing:.06em; color:var(--ink-soft); }
  .kas-card .val{ font-family:'IBM Plex Mono', monospace; font-size:18px; font-weight:600; margin-top:4px; }
  .kas-card.income .val{ color:var(--stamp-green); }
  .kas-card.expense .val{ color:var(--stamp-red); }

  .budget-bar-wrap{
    background:#fff; border:1px solid var(--paper-line); border-radius:8px; padding:14px 16px; margin-bottom:18px;
  }
  .budget-bar-head{ display:flex; justify-content:space-between; font-size:12.5px; color:var(--ink-soft); margin-bottom:8px; }
  .budget-bar-track{ height:14px; background:#EFE7CE; border-radius:7px; overflow:hidden; }
  .budget-bar-fill{ height:100%; background:var(--stamp-green); transition:width .4s ease, background .4s ease; }
  .budget-bar-fill.over{ background:var(--stamp-red); }
  .budget-status{ margin-top:8px; font-size:12.5px; font-weight:600; }

  .eom-wrap{ background:#fff; border:1px solid var(--paper-line); border-radius:8px; padding:16px; margin-bottom:20px; }
  .eom-wrap h3{ font-family:'Source Serif 4', serif; font-size:14.5px; margin:0 0 14px; color:var(--ink); }
  .teller-note{
    position:relative; transform:rotate(-1deg);
    background:#FFF9E6; border:1px solid rgba(0,0,0,0.08); border-left:5px solid var(--gold);
    border-radius:2px 10px 10px 2px; padding:18px 20px 14px 22px;
    box-shadow:0 8px 16px -10px rgba(0,0,0,0.4);
    transition:background .2s ease, border-color .2s ease;
  }
  .teller-note.mood-bad{ border-left-color:var(--stamp-red); background:#FBEDEA; }
  .teller-note.mood-warn{ border-left-color:#B5811F; background:#FFF6E0; }
  .teller-note.mood-great{ border-left-color:var(--stamp-green); background:#EAF5EE; }
  .teller-note.mood-good{ border-left-color:var(--stamp-green); background:#F3FAF5; }
  .teller-note.mood-empty{ border-left-color:var(--paper-line); background:#F8F5EA; }
  .teller-note::before{
    content:"📌"; position:absolute; top:-12px; left:16px; font-size:18px;
    filter:drop-shadow(0 2px 2px rgba(0,0,0,0.25));
  }
  .teller-note .tn-label{
    font-family:'IBM Plex Mono', monospace; font-size:10px; text-transform:uppercase;
    letter-spacing:.08em; color:var(--ink-soft); margin-bottom:6px; display:block;
  }
  .teller-note .tn-msg{ font-family:'Caveat', cursive; font-weight:700; font-size:25px; line-height:1.25; color:var(--ink); margin:0 0 10px; }
  .teller-note .tn-figures{ font-family:'IBM Plex Mono', monospace; font-size:11.5px; color:var(--ink-soft); line-height:1.6; }

  .cat-budget-wrap{ background:#fff; border:1px solid var(--paper-line); border-radius:8px; padding:14px 16px; margin-bottom:20px; }
  .cat-budget-wrap h3{ font-family:'Source Serif 4', serif; font-size:14.5px; margin:0 0 12px; color:var(--ink); }
  .cat-budget-row{ display:flex; align-items:center; gap:10px; margin-bottom:10px; flex-wrap:wrap; font-size:12.5px; }
  .cat-budget-row:last-of-type{ margin-bottom:0; }
  .cat-budget-row .cat-name{ width:150px; font-weight:600; color:var(--ink); flex-shrink:0; }
  .cat-budget-row input{
    width:120px; font-family:'IBM Plex Mono', monospace; font-size:12.5px; padding:7px 9px;
    border-radius:5px; border:1px solid var(--paper-line); background:#fff; color:var(--ink);
  }
  .cat-budget-row input:focus{ outline:2px solid var(--gold); outline-offset:1px; }
  .cat-budget-row .mini-bar{ flex:1 1 100px; min-width:80px; }
  .cat-budget-row .mini-track{ height:8px; background:#EFE7CE; border-radius:4px; overflow:hidden; }
  .cat-budget-row .mini-fill{ height:100%; background:var(--stamp-green); transition:width .3s ease; }
  .cat-budget-row .mini-fill.over{ background:var(--stamp-red); }
  .cat-budget-row .spent-txt{ font-family:'IBM Plex Mono', monospace; color:var(--ink-soft); width:170px; text-align:right; flex-shrink:0; }
  @media (max-width:560px){
    .cat-budget-row .cat-name{ width:100%; }
    .cat-budget-row .spent-txt{ width:100%; text-align:left; }
  }

  .charts-grid{ display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-bottom:20px; }
  @media (max-width:640px){ .charts-grid{grid-template-columns:1fr;} }
  .chart-box{ background:#fff; border:1px solid var(--paper-line); border-radius:8px; padding:14px; }
  .chart-box h3{ font-family:'Source Serif 4', serif; font-size:13.5px; margin:0 0 10px; color:var(--ink); }
  .chart-box canvas{ max-height:200px; }

  .kas-form{ background:#fff; border:1px solid var(--paper-line); border-radius:8px; padding:16px; margin-bottom:20px; }
  .kas-form h3{ font-family:'Source Serif 4', serif; font-size:14.5px; margin:0 0 12px; }

  table.ledger{ width:100%; border-collapse:collapse; font-size:12.5px; }
  table.ledger th{
    text-align:left; font-family:'IBM Plex Mono', monospace; font-size:10.5px; text-transform:uppercase;
    letter-spacing:.05em; color:var(--ink-soft); border-bottom:2px solid var(--ink); padding:6px 8px;
  }
  table.ledger td{ padding:8px; border-bottom:1px solid var(--paper-line); vertical-align:top; }
  table.ledger tr:last-child td{ border-bottom:none; }
  .badge{ font-size:10.5px; font-weight:700; padding:2px 8px; border-radius:10px; display:inline-block; }
  .badge.in{ background:rgba(47,107,79,0.15); color:var(--stamp-green); }
  .badge.out{ background:rgba(179,58,58,0.15); color:var(--stamp-red); }
  .del-btn{ background:none; border:none; color:var(--ink-soft); cursor:pointer; font-size:14px; }
  .del-btn:hover{ color:var(--stamp-red); }
  .empty-row{ text-align:center; color:var(--ink-soft); padding:20px 0; font-size:13px; }

  .kas-toolbar{ display:flex; flex-wrap:wrap; gap:10px; align-items:flex-end; margin-bottom:16px; }
  .kas-toolbar .field{ margin-bottom:0; }

  .article h3{ font-family:'Source Serif 4', serif; font-size:19px; margin:26px 0 10px; color:var(--ink); }
  .article h3:first-child{ margin-top:0; }
  .article p{ line-height:1.75; margin:0 0 14px; color:var(--ink); font-size:14.5px; }
  .article ul{ padding-left:20px; margin:0 0 14px; }
  .article li{ margin-bottom:9px; line-height:1.65; font-size:14.5px; }
  .article .lede{ font-family:'Source Serif 4', serif; font-size:17px; line-height:1.6; color:var(--ink); margin-bottom:16px; }
  .article .updated{
    font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--ink-soft);
    margin-bottom:20px; text-transform:uppercase; letter-spacing:.05em;
  }
  .article strong{ color:var(--ink); }

  /* ---------- Toast notifications ---------- */
  #toastContainer{ position:fixed; top:18px; right:18px; z-index:1000; display:flex; flex-direction:column; gap:10px; max-width:300px; }
  .toast{
    background:#fff; border-left:5px solid var(--stamp-red); border-radius:6px;
    padding:13px 16px; box-shadow:0 10px 24px -8px rgba(0,0,0,0.4);
    font-family:'Inter', sans-serif; font-size:12.5px; color:var(--ink); line-height:1.5;
    animation: toastIn .3s ease, toastOut .3s ease 4.2s forwards;
  }
  .toast.warn{ border-left-color:#B5811F; }
  .toast .toast-title{ font-weight:700; margin-bottom:3px; display:block; font-size:13px; }
  @keyframes toastIn{ from{opacity:0; transform:translateX(30px);} to{opacity:1; transform:translateX(0);} }
  @keyframes toastOut{ to{opacity:0; transform:translateX(30px);} }

  /* ---------- Text pages (Tentang / Kebijakan Privasi) ---------- */
  .prose{ max-width:640px; }
  .prose p{ font-size:14.5px; line-height:1.75; color:var(--ink); margin:0 0 16px; }
  .prose p:last-child{ margin-bottom:0; }
  .prose .lede{ font-family:'Source Serif 4', serif; font-size:17px; line-height:1.6; color:var(--ink); }
  .prose h3{ font-family:'Source Serif 4', serif; font-size:15.5px; margin:26px 0 10px; color:var(--ink); }
  .prose h3:first-child{ margin-top:0; }
  .prose ul{ margin:0 0 16px; padding-left:20px; }
  .prose li{ font-size:14px; line-height:1.7; color:var(--ink); margin-bottom:6px; }
  .prose .meta{
    font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--ink-soft);
    text-transform:uppercase; letter-spacing:.06em; margin-bottom:18px; display:block;
  }
  .prose .signoff{ font-family:'Caveat', cursive; font-size:20px; color:var(--ink-soft); margin-top:6px; }
  .inline-link{
    background:none; border:none; padding:0; font-family:'Inter', sans-serif; font-size:13.5px;
    font-weight:700; color:var(--stamp-red); cursor:pointer; text-decoration:underline;
  }

  /* ---------- Article index list (artikel.html) ---------- */
  .article-index-item{ margin-bottom:30px; }
  .article-index-item:last-child{ margin-bottom:0; }
  .article-index-item .article-title a{ color:var(--ink); text-decoration:none; }
  .article-index-item .article-title a:hover{ text-decoration:underline; }
  .article-index-item p{ margin:0 0 10px; }

  /* ---------- Nav card grid (index.html homepage) ---------- */
  .nav-cards{ display:grid; grid-template-columns:repeat(3, 1fr); gap:14px; margin-top:22px; }
  @media (max-width:760px){ .nav-cards{ grid-template-columns:1fr; } }
  .nav-card{
    display:block; background:var(--paper); border-radius:10px; padding:20px 18px;
    text-decoration:none; box-shadow:0 14px 30px -18px rgba(0,0,0,0.55);
    transition:transform .15s ease;
  }
  .nav-card:hover{ transform:translateY(-3px); }
  .nav-card .nc-eyebrow{
    font-family:'IBM Plex Mono', monospace; font-size:10px; text-transform:uppercase;
    letter-spacing:.08em; color:var(--ink-soft); display:block; margin-bottom:6px;
  }
  .nav-card h3{ font-family:'Source Serif 4', serif; font-size:16px; margin:0 0 8px; color:var(--ink); }
  .nav-card p{ font-size:13px; line-height:1.6; color:var(--ink-soft); margin:0; }
  .article{ margin-bottom:34px; }
  .article:last-child{ margin-bottom:0; }
  .article-meta{
    font-family:'IBM Plex Mono', monospace; font-size:10.5px; color:var(--ink-soft);
    text-transform:uppercase; letter-spacing:.06em; margin-bottom:6px; display:block;
  }
  .article h3.article-title{ font-family:'Source Serif 4', serif; font-size:18px; margin:0 0 12px; color:var(--ink); }
  .article-divider{ border:none; border-top:1px dashed var(--paper-line); margin:30px 0; }

  /* ---------- Footer ---------- */
  footer{ margin-top:26px; text-align:center; color:#9FB3AC; font-size:12px; line-height:1.7; }
  footer .disclaimer{
    max-width:620px; margin:0 auto 16px; color:#CFE0D6; background:rgba(255,255,255,0.03);
    border:1px solid rgba(228,193,88,0.2); border-radius:8px; padding:12px 16px;
  }