*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
  :root{
    --bg:#f7f9fc;--surface:#fff;--border:#e2e8f0;--border-soft:#eef2f7;
    --text:#1a202c;--muted:#64748b;--light:#94a3b8;
    --primary:#2563eb;--primary-lt:#dbeafe;--primary-dk:#1d4ed8;
    --overlap:#16a34a;--overlap-bg:#dcfce7;--overlap-bdr:#bbf7d0;
    --font:"Inter",system-ui,sans-serif;
    --radius:8px;--radius-lg:14px;
    --shadow-sm:0 1px 3px rgba(0,0,0,.08);--shadow-md:0 4px 16px rgba(0,0,0,.10);
    --max:1080px;--pad:clamp(16px,4vw,40px)
  }
  html{scroll-behavior:smooth}
  body{font-family:var(--font);font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
  h1{font-size:clamp(1.75rem,4vw,2.5rem);font-weight:800;line-height:1.15;letter-spacing:-.02em;margin-bottom:.75rem}
  h2{font-size:clamp(1.2rem,3vw,1.6rem);font-weight:700;line-height:1.25;margin-top:2.25rem;margin-bottom:.65rem}
  h3{font-size:1.1rem;font-weight:600;margin-top:1.75rem;margin-bottom:.5rem}
  p{margin-bottom:1rem}
  a{color:var(--primary);text-decoration:none}
  a:hover{text-decoration:underline}
  strong{font-weight:700}
  ul,ol{padding-left:1.5rem;margin-bottom:1rem}
  li{margin-bottom:.4rem}
  .container{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}

  /* Header */
  .site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm);isolation:isolate}
  .site-header .container{display:flex;align-items:center;justify-content:space-between;height:60px;gap:1rem;position:relative}
  .site-logo{display:flex;align-items:center;gap:.5rem;font-weight:800;font-size:1.05rem;color:var(--text);text-decoration:none;flex-shrink:0}
  .site-logo:hover{text-decoration:none}
  .nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:.4rem;color:var(--text)}
  .site-nav{display:flex;align-items:center;gap:.25rem}
  .site-nav a{font-size:.875rem;font-weight:500;color:var(--muted);padding:.4rem .75rem;border-radius:var(--radius);transition:color .15s,background .15s}
  .site-nav a:hover{color:var(--text);background:var(--border-soft);text-decoration:none}

  /* Hero */
  .hero{background:linear-gradient(135deg,#1e3a8a 0%,#2563eb 50%,#0ea5e9 100%);color:#fff;padding:clamp(2.5rem,6vw,5rem) var(--pad);text-align:center}
  .hero h1{color:#fff;margin-bottom:1rem}
  .hero p{color:rgba(255,255,255,.85);font-size:1.1rem;max-width:600px;margin:0 auto}

  /* Tool */
  .tool-section{background:#fff;border-bottom:1px solid var(--border);padding:2rem var(--pad)}
  .tool-card{max-width:var(--max);margin:0 auto;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.75rem}
  .tool-card h2{margin-top:0;font-size:1.15rem;margin-bottom:1.25rem}
  .tool-controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:1rem;align-items:end}
  .tool-controls label{display:flex;flex-direction:column;gap:.35rem;font-size:.8rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
  .tool-controls select{appearance:none;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E") no-repeat right .75rem center;border:1.5px solid var(--border);border-radius:var(--radius);padding:.6rem 2.25rem .6rem .85rem;font-size:.95rem;font-family:var(--font);color:var(--text);cursor:pointer;transition:border-color .15s}
  .tool-controls select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-lt)}
  .checkbox-row{display:flex!important;flex-direction:row!important;align-items:center;gap:.5rem;font-size:.9rem;text-transform:none!important;letter-spacing:0!important;white-space:nowrap;padding-bottom:.55rem}
  .checkbox-row input{width:16px;height:16px;cursor:pointer;accent-color:var(--primary)}
  .btn-compare{background:var(--primary);color:#fff;border:none;border-radius:var(--radius);padding:.65rem 1.5rem;font-size:.95rem;font-weight:600;font-family:var(--font);cursor:pointer;transition:background .15s,transform .1s;align-self:end;white-space:nowrap;margin-left:.5rem}
  .btn-compare:hover{background:var(--primary-dk);transform:translateY(-1px)}

  /* Tables */
  .table-wrapper{width:100%;overflow-x:auto;border-radius:var(--radius-lg);border:1px solid var(--border);margin:1.5rem 0}
  table{width:100%;border-collapse:collapse;font-size:.9rem;background:#fff}
  thead{background:var(--bg);border-bottom:2px solid var(--border)}
  thead th{padding:.85rem 1rem;text-align:left;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);white-space:nowrap}
  tbody tr{border-bottom:1px solid var(--border-soft);transition:background .1s}
  tbody tr:last-child{border-bottom:none}
  tbody tr:hover{background:var(--bg)}
  tbody td{padding:.75rem 1rem;vertical-align:middle}
  .row-overlap{background:var(--overlap-bg)!important;border-left:3px solid var(--overlap)}
  .row-overlap:hover{background:#d1fae5!important}
  .overlap-badge{display:inline-flex;align-items:center;gap:.3rem;background:var(--overlap);color:#fff;font-size:.7rem;font-weight:700;padding:.2rem .55rem;border-radius:99px;text-transform:uppercase;letter-spacing:.05em;white-space:nowrap}
  .date-main{font-weight:600}
  .date-day{display:block;font-size:.78rem;color:var(--muted)}
  .holiday-name{font-weight:500}
  .holiday-link{color:var(--text);text-decoration:underline;text-decoration-style:dotted;text-underline-offset:3px;text-decoration-color:var(--light)}
  .holiday-link:hover{color:var(--primary);text-decoration-color:var(--primary)}
  .holiday-type{font-size:.75rem;color:var(--light)}
  .cell-empty{color:var(--light)}
  .blog-table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:.9rem;background:#fff;border:1px solid var(--border);border-radius:var(--radius)}
  .blog-table th{background:var(--bg);padding:.75rem 1rem;text-align:left;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);border-bottom:2px solid var(--border)}
  .blog-table td{padding:.75rem 1rem;border-bottom:1px solid var(--border-soft);vertical-align:top}
  .blog-table tr:last-child td{border-bottom:none}

  /* Layout sections */
  .page-section{padding:2.5rem var(--pad);max-width:var(--max);margin:0 auto}
  .post-section{padding:2.5rem var(--pad);max-width:760px;margin:0 auto}
  .summary-box{background:var(--primary-lt);border:1px solid #bfdbfe;border-radius:var(--radius-lg);padding:1.25rem 1.5rem;margin:1.5rem 0;font-size:1.05rem}
  .ad-unit{margin:2rem auto;padding:1rem 0;max-width:970px;text-align:center}
  .ad-label{display:block;margin-bottom:.4rem;font-size:.68rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--light)}
  .overlap-list{list-style:none;padding:0;margin:1rem 0;display:flex;flex-direction:column;gap:.75rem}
  .overlap-list li{background:var(--overlap-bg);border:1px solid var(--overlap-bdr);border-radius:var(--radius);padding:.85rem 1.1rem;margin:0}
  .overlap-date{font-weight:700;font-size:1rem;display:block;margin-bottom:.25rem}
  .overlap-names{font-size:.9rem;color:var(--muted)}

  /* Pairs grid */
  .pairs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:.85rem;margin:1.25rem 0}
  .pair-card{display:flex;flex-direction:column;gap:.5rem;background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:1rem 1.1rem;font-size:.9rem;font-weight:500;color:var(--text);text-decoration:none;transition:border-color .15s,box-shadow .15s,transform .1s}
  .pair-card:hover{border-color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-2px);text-decoration:none;color:var(--primary)}
  .pair-country{display:flex;align-items:center;gap:.65rem}
  .pair-country img{border-radius:3px;object-fit:cover;flex-shrink:0}
  .pair-country-name{font-size:.9rem;font-weight:600;line-height:1.2}
  .pair-divider{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--light);text-align:center;padding:.1rem 0}
  .region-group{margin-bottom:2.5rem}
  .region-label{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:.75rem;padding-bottom:.4rem;border-bottom:2px solid var(--border)}

  /* Blog */
  .blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.25rem;margin:1.5rem 0}
  .blog-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.5rem;display:flex;flex-direction:column;gap:.5rem;text-decoration:none;color:inherit;transition:box-shadow .15s,transform .1s}
  .blog-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);text-decoration:none}
  .blog-card h2{font-size:1.05rem;margin:0;color:var(--text)}
  .blog-card p{font-size:.9rem;color:var(--muted);margin:0;flex:1}
  .blog-meta{display:flex;gap:.75rem;font-size:.8rem;color:var(--light)}
  .read-more{font-size:.85rem;font-weight:600;color:var(--primary);margin-top:auto}

  /* FAQ */
  .faq-section{max-width:760px}
  .faq-item{border-bottom:1px solid var(--border);padding:1.25rem 0}
  .faq-item:last-child{border-bottom:none}
  .faq-question{font-size:1rem;font-weight:600;margin-bottom:.5rem;color:var(--text)}
  .faq-answer{color:var(--muted);font-size:.95rem;line-height:1.65;margin:0}

  /* Misc */
  .breadcrumb{font-size:.85rem;color:var(--muted);margin-bottom:1.25rem;display:flex;gap:.4rem;align-items:center;flex-wrap:wrap}
  .breadcrumb a{color:var(--muted)}
  .breadcrumb a:hover{color:var(--primary)}
  .post-header{margin-bottom:2rem}
  .post-meta{font-size:.875rem;color:var(--muted);margin-top:.5rem}
  .post-body p{margin-bottom:1.1rem;line-height:1.8}
  .post-body h2{margin-top:2.25rem}
  .post-body h3{margin-top:1.75rem}
  .post-body ul,.post-body ol{margin-bottom:1.1rem}
  .post-body li{margin-bottom:.5rem}
  .text-muted{color:var(--muted)}
  .text-small{font-size:.875rem}
  .divider{border:none;border-top:1px solid var(--border);margin:2.5rem 0}
  .sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}

  /* Footer */
  .site-footer{margin-top:5rem;border-top:1px solid var(--border);background:#fff;padding:2.5rem 0}
  .footer-inner{display:flex;flex-wrap:wrap;gap:1rem;align-items:center;justify-content:space-between;font-size:.875rem;color:var(--muted)}
  .footer-links{display:flex;flex-wrap:wrap;gap:.25rem 1.25rem}
  .footer-links a{color:var(--muted);font-size:.875rem}
  .footer-links a:hover{color:var(--primary)}

  /* Responsive */
  @media(max-width:768px){
    .nav-toggle{display:flex;align-items:center}
    .site-nav{display:none;position:absolute;top:60px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);box-shadow:var(--shadow-md);flex-direction:column;padding:.5rem 0;z-index:200}
    .site-nav.open{display:flex}
    .site-nav a{padding:.85rem 1.5rem;border-radius:0;font-size:1rem;border-bottom:1px solid var(--border-soft)}
    .site-nav a:last-child{border-bottom:none}
    .tool-controls{grid-template-columns:1fr 1fr}
    .btn-compare{grid-column:1/-1;margin-left:0}
    table{font-size:.8rem}
    thead th,tbody td{padding:.6rem .5rem}
    thead th:nth-child(4),tbody td:nth-child(4){display:none}
    .footer-inner{flex-direction:column;align-items:flex-start}
  }
  @media(max-width:480px){
    .tool-controls{grid-template-columns:1fr}
    table{font-size:.75rem}
  }
  @media print{
    .site-header,.site-footer,.tool-section{display:none}
    .row-overlap{background:#e8f5e9!important}
  }