:root {
    --saffron: #FF9933;
    --saffron-dark: #E07E1B;
    --saffron-soft: #FFF1E1;
    --navy: #000080;
    --navy-ink: #11164F;
    --green: #138808;
    --green-soft: #E6F4E2;
    --bg: #FFFFFF;
    --surface: #FFF8F0;
    --surface-2: #F7F8FB;
    --text: #1A1A2E;
    --muted: #5C5C70;
    --border: #EADCCB;
    --border-2: #E2E6EF;
    --radius: 14px;
    --radius-sm: 8px;
    --shadow: 0 4px 20px rgba(17, 22, 79, 0.08);
    --shadow-lg: 0 14px 40px rgba(17, 22, 79, 0.12);
    --hit: 44px;
  }

  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }

  body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    -webkit-text-size-adjust: 100%;
  }

  [lang="hi"] {
    font-family: "Noto Sans Devanagari", "Nirmala UI", "Mangal", "Kohinoor Devanagari", sans-serif;
    line-height: 1.8;
  }

  a { color: var(--navy); text-decoration: none; }
  a:hover { text-decoration: underline; }

  .container { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 20px; }

  .tricolor { display: flex; height: 4px; }
  .tricolor span { flex: 1; }
  .tricolor .s1 { background: var(--saffron); }
  .tricolor .s2 { background: #FFFFFF; }
  .tricolor .s3 { background: var(--green); }

  header.site {
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid var(--border-2);
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(6px);
  }

  .nav { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 0; }

  .brand { display: flex; align-items: center; gap: 9px; font-weight: 800; color: var(--navy-ink); font-size: 1.02rem; letter-spacing: -0.01em; }
  .brand:hover { text-decoration: none; }
  .brand .mark {
    width: 30px; height: 30px; border-radius: 8px;
    background: linear-gradient(180deg, var(--saffron) 0 33%, #fff 33% 66%, var(--green) 66% 100%);
    border: 1px solid var(--border);
    display: grid; place-items: center;
    color: var(--navy); font-weight: 800; font-size: 13px;
  }
  .brand small { display: block; font-size: 11px; font-weight: 600; color: var(--muted); letter-spacing: 0; }

  nav.links { display: flex; gap: 18px; font-size: 0.9rem; font-weight: 600; }
  nav.links a { color: var(--muted); }
  nav.links a:hover { color: var(--navy); text-decoration: none; }

  @media (max-width: 760px) { nav.links { display: none; } }

  .hero { padding: 42px 0 8px; text-align: center; }
  .hero h1 {
    font-size: clamp(1.55rem, 4.6vw, 2.35rem);
    line-height: 1.25;
    margin: 0 0 10px;
    color: var(--navy-ink);
    letter-spacing: -0.02em;
  }
  .hero h1 span { color: var(--saffron-dark); }
  .hero .lead { max-width: 700px; margin: 0 auto 6px; color: var(--muted); font-size: 1rem; }
  .hero .lead-hi { max-width: 700px; margin: 0 auto; color: var(--navy); font-size: 1.02rem; font-weight: 600; }

  .chips { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin: 16px 0 4px; }
  .chip {
    font-size: 0.78rem; font-weight: 700; color: var(--navy-ink);
    background: var(--saffron-soft); border: 1px solid var(--border);
    padding: 4px 10px; border-radius: 999px;
  }
  .chip.green { background: var(--green-soft); border-color: #CDE8C6; }

  main { display: block; }

  .tool-wrap { padding: 18px 0 10px; }

  .card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 16px;
  }

  .segmented {
    display: inline-flex;
    background: var(--surface-2);
    border: 1px solid var(--border-2);
    border-radius: 999px;
    padding: 4px;
    gap: 4px;
    margin-bottom: 14px;
    width: 100%;
    max-width: 460px;
  }
  .segmented button {
    flex: 1;
    min-height: 40px;
    border: 0;
    background: transparent;
    border-radius: 999px;
    font: inherit;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--muted);
    cursor: pointer;
    padding: 6px 10px;
    transition: background 0.15s, color 0.15s;
  }
  .segmented button[aria-pressed="true"] {
    background: var(--navy);
    color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 128, 0.22);
  }

  .grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
  @media (max-width: 820px) { .grid { grid-template-columns: 1fr; } }

  .pane { display: flex; flex-direction: column; min-width: 0; }

  .pane-head {
    display: flex; align-items: baseline; justify-content: space-between;
    gap: 8px; margin-bottom: 6px;
  }
  .pane-head label, .pane-head .ph-label {
    font-size: 0.83rem; font-weight: 800; color: var(--navy-ink);
    text-transform: uppercase; letter-spacing: 0.04em;
  }
  .pane-head .counter { font-size: 0.75rem; color: var(--muted); font-variant-numeric: tabular-nums; }

  textarea {
    width: 100%;
    min-height: 220px;
    resize: vertical;
    padding: 13px 14px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 15px;
    line-height: 1.7;
    color: var(--text);
    background: var(--surface-2);
    border: 1px solid var(--border-2);
    border-radius: var(--radius-sm);
    outline: none;
  }
  textarea:focus { border-color: var(--saffron); box-shadow: 0 0 0 3px rgba(255, 153, 51, 0.22); }
  textarea[readonly] { background: #FFFDF8; border-color: var(--border); }
  #output-text {
    font-family: "Noto Sans Devanagari", "Nirmala UI", "Mangal", "Kohinoor Devanagari", ui-monospace, monospace;
    font-size: 16.5px;
    line-height: 1.85;
    min-height: 220px;
  }

  .toolbar { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 14px; }

  .btn {
    min-height: var(--hit);
    padding: 0 18px;
    border-radius: var(--radius-sm);
    font: inherit;
    font-size: 0.92rem;
    font-weight: 700;
    cursor: pointer;
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: transform 0.06s, background 0.15s, border-color 0.15s;
  }
  .btn:active { transform: translateY(1px); }
  .btn-primary { background: var(--saffron); color: var(--navy-ink); box-shadow: 0 3px 0 var(--saffron-dark); }
  .btn-primary:hover { background: #FFA94D; }
  .btn-navy { background: var(--navy); color: #fff; }
  .btn-navy:hover { background: #12127a; }
  .btn-outline { background: #fff; color: var(--navy-ink); border-color: var(--border-2); }
  .btn-outline:hover { border-color: var(--saffron); }

  @media (max-width: 520px) {
    .btn { flex: 1 1 calc(50% - 9px); padding: 0 12px; }
    .btn-primary { flex-basis: 100%; }
  }

  .status {
    margin-top: 10px; min-height: 22px;
    font-size: 0.86rem; font-weight: 600; color: var(--green);
  }
  .status.err { color: #C2410C; }

  .note {
    display: flex; gap: 8px; align-items: flex-start;
    margin-top: 12px; padding: 11px 13px;
    background: var(--green-soft);
    border: 1px solid #CDE8C6;
    border-radius: var(--radius-sm);
    font-size: 0.87rem;
    color: #14532D;
  }
  .note strong { font-weight: 800; }

  .section { padding: 42px 0; }
  .section.alt { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
  .section h2 {
    font-size: clamp(1.2rem, 3.2vw, 1.55rem);
    color: var(--navy-ink);
    margin: 0 0 6px;
    letter-spacing: -0.01em;
  }
  .section .sub { color: var(--muted); margin: 0 0 20px; font-size: 0.95rem; }
  .section .sub-hi { color: var(--navy); font-weight: 600; }

  .steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
  @media (max-width: 820px) { .steps { grid-template-columns: 1fr; } }
  .step {
    background: #fff; border: 1px solid var(--border-2); border-radius: var(--radius);
    padding: 16px;
  }
  .step .num {
    width: 28px; height: 28px; border-radius: 50%;
    background: var(--saffron); color: var(--navy-ink);
    display: grid; place-items: center; font-weight: 800; font-size: 0.9rem;
    margin-bottom: 10px;
  }
  .step h3 { margin: 0 0 6px; font-size: 1rem; color: var(--navy-ink); }
  .step p { margin: 0 0 6px; font-size: 0.9rem; color: var(--muted); }
  .step p.hi { color: var(--navy); font-weight: 600; }

  table.map { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--border-2); border-radius: var(--radius); overflow: hidden; }
  table.map th, table.map td { padding: 11px 13px; text-align: left; font-size: 0.91rem; border-bottom: 1px solid var(--border-2); vertical-align: top; }
  table.map th { background: var(--surface-2); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }
  table.map tr:last-child td { border-bottom: 0; }
  table.map td:first-child { font-weight: 700; color: var(--navy-ink); width: 34%; }
  .sample-hi { font-size: 1.05rem; }

  .callout {
    background: #fff; border-left: 4px solid var(--saffron);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 14px 16px; box-shadow: var(--shadow);
  }
  .callout p { margin: 0 0 8px; font-size: 0.92rem; }
  .callout p:last-child { margin-bottom: 0; }

  details.faq {
    background: #fff; border: 1px solid var(--border-2); border-radius: var(--radius-sm);
    padding: 0 14px; margin-bottom: 9px;
  }
  details.faq summary {
    cursor: pointer; font-weight: 700; padding: 13px 0; color: var(--navy-ink);
    list-style: none; display: flex; justify-content: space-between; gap: 10px; font-size: 0.95rem;
  }
  details.faq summary::-webkit-details-marker { display: none; }
  details.faq summary::after { content: "+"; color: var(--saffron-dark); font-weight: 800; }
  details.faq[open] summary::after { content: "−"; }
  details.faq .a { padding: 0 0 14px; font-size: 0.92rem; color: var(--muted); }
  details.faq .a p { margin: 0 0 8px; }
  details.faq .a p:last-child { margin: 0; }

  footer.site { border-top: 1px solid var(--border-2); padding: 26px 0 34px; font-size: 0.85rem; color: var(--muted); }
  footer.site .row { display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between; align-items: center; }
  footer.site a { color: var(--navy); font-weight: 600; }
  footer.site .fine { margin-top: 10px; font-size: 0.79rem; line-height: 1.6; }

  @media (max-width: 520px) {
    .hero { padding-top: 28px; }
    .section { padding: 32px 0; }
    textarea { min-height: 170px; }
  }

  /* ---------- Shared cross-page navigation (multi-page) ---------- */
  .nav { flex-wrap: wrap; }

  @media (max-width: 820px) {
    nav.links {
      display: flex;
      flex-wrap: wrap;
      width: 100%;
      gap: 6px 14px;
      padding-top: 6px;
      margin-top: 4px;
      border-top: 1px dashed var(--border-2);
      font-size: 0.82rem;
    }
    nav.links a[aria-current="page"] { color: var(--navy); }
  }

  nav.links a[aria-current="page"] { color: var(--navy); }

  /* ---------- Long-form article pages ---------- */
  .breadcrumb { font-size: 0.79rem; color: var(--muted); padding-top: 14px; }
  .breadcrumb a { color: var(--muted); }
  .breadcrumb span { margin: 0 6px; }

  .article { padding: 10px 0 6px; }
  .article h2 { font-size: clamp(1.15rem, 3vw, 1.45rem); color: var(--navy-ink); margin: 32px 0 8px; letter-spacing: -0.01em; }
  .article h2:first-of-type { margin-top: 20px; }
  .article h3 { font-size: 1.02rem; color: var(--navy-ink); margin: 22px 0 6px; }
  .article p { margin: 0 0 12px; font-size: 0.97rem; }
  .article li { margin-bottom: 6px; font-size: 0.97rem; }
  .article ul, .article ol { padding-left: 22px; margin: 0 0 14px; }
  .article blockquote {
    margin: 0 0 16px; padding: 10px 16px; background: var(--surface);
    border-left: 4px solid var(--saffron); border-radius: 0 8px 8px 0;
    color: var(--muted); font-size: 0.94rem;
  }
  .article .kbd {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    background: #fff; border: 1px solid var(--border-2); border-bottom-width: 2px;
    border-radius: 6px; padding: 1px 6px; font-size: 0.86em; white-space: nowrap;
  }
  .article .mono {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    background: var(--surface-2); border: 1px solid var(--border-2);
    border-radius: 6px; padding: 2px 6px; font-size: 0.9em;
  }
  .article .sample-line {
    background: #fff; border: 1px solid var(--border-2); border-radius: var(--radius-sm);
    padding: 10px 13px; margin: 0 0 10px;
  }
  .article .sample-line .lab { display: block; font-size: 0.75rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }
  .article .sample-line .mono { display: inline-block; margin-top: 4px; }
  .article .sample-line .dev { display: block; margin-top: 6px; font-family: "Noto Sans Devanagari", "Nirmala UI", "Mangal", sans-serif; font-size: 1.05rem; color: var(--navy-ink); }

  .keymap { display: grid; grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); gap: 8px; margin: 0 0 16px; }
  .keymap div { background: #fff; border: 1px solid var(--border-2); border-radius: 8px; padding: 7px 4px; text-align: center; }
  .keymap .k { display: block; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.82rem; font-weight: 700; color: var(--navy-ink); word-break: break-all; }
  .keymap .v { display: block; font-family: "Noto Sans Devanagari", "Nirmala UI", "Mangal", sans-serif; font-size: 1.12rem; color: var(--text); line-height: 1.4; }
  .keymap-note { font-size: 0.85rem; color: var(--muted); margin: -6px 0 18px; }

  .pagenav { display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; margin: 34px 0 0; padding-top: 18px; border-top: 1px solid var(--border-2); font-size: 0.9rem; font-weight: 700; }
  .pagenav a { color: var(--navy); }

  .related { margin: 30px 0 0; padding: 16px 18px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); font-size: 0.92rem; }
  .related h2 { margin: 0 0 8px; font-size: 1rem; }
  .related ul { margin: 0; padding-left: 20px; }

  /* ---------- Contact form ---------- */
  .form-field { margin-bottom: 14px; }
  .form-field label {
    display: block; font-size: 0.8rem; font-weight: 800; color: var(--navy-ink);
    text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 6px;
  }
  .form-field input, .form-field textarea, .form-field select {
    width: 100%; padding: 11px 13px; font: inherit; font-size: 0.95rem;
    color: var(--text); background: #fff; border: 1px solid var(--border-2);
    border-radius: var(--radius-sm); outline: none;
  }
  .form-field input:focus, .form-field textarea:focus, .form-field select:focus {
    border-color: var(--saffron); box-shadow: 0 0 0 3px rgba(255, 153, 51, 0.22);
  }
  .form-field textarea { min-height: 150px; resize: vertical; }
  .form-note { font-size: 0.84rem; color: var(--muted); margin-top: 10px; }