:root {
  --ink: #142338;
  --muted: #617188;
  --paper: #f7f7f2;
  --card: #ffffff;
  --green: #007b45;
  --green-dark: #063a2b;
  --red: #df2639;
  --yellow: #f4b942;
  --blue: #137fbc;
  --line: #dfe6e1;
  --shadow: 0 18px 50px rgba(15, 42, 31, .10);
  --sans: "Noto Sans Bengali", "Hind Siliguri", Arial, sans-serif;
  --serif: "Noto Serif Bengali", Georgia, serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); }
a { color: inherit; text-decoration: none; }
.inner-topline { background: var(--green-dark); color: #b8d9c9; font-size: 12px; }
.inner-wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.inner-topline .inner-wrap { min-height: 35px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.inner-topline a { color: #f6cf69; }
.inner-masthead { background: #fff; border-bottom: 1px solid #e7ece8; }
.inner-masthead .inner-wrap { min-height: 102px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.inner-logo { width: 238px; max-width: 54vw; height: auto; border-radius: 5px; }
.inner-note { color: var(--muted); font-size: 13px; line-height: 1.7; }
.inner-note strong { color: var(--green); display: block; }
.inner-utility { display: flex; align-items: center; gap: 9px; }
.inner-utility a { border: 1px solid #d9e5dc; border-radius: 99px; padding: 9px 13px; color: var(--green); font-size: 12px; font-weight: 700; }
.inner-utility a:hover { background: #eef8f1; }
.inner-nav { background: linear-gradient(90deg, var(--green-dark), #087c69 58%, #126c9d); color: #e9fff6; border-bottom: 3px solid var(--red); }
.inner-nav .inner-wrap { min-height: 45px; display: flex; align-items: center; gap: 20px; overflow-x: auto; scrollbar-width: none; }
.inner-nav .inner-wrap::-webkit-scrollbar { display: none; }
.inner-nav a { flex: 0 0 auto; font-size: 12px; padding: 13px 0 11px; border-bottom: 2px solid transparent; }
.inner-nav a:hover, .inner-nav a[aria-current="page"] { color: #fadd7a; border-bottom-color: var(--yellow); }
.inner-main { padding: 42px 0 68px; }
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; color: #778697; font-size: 12px; margin-bottom: 17px; }
.breadcrumb a { color: var(--green); font-weight: 700; }
.breadcrumb span { color: #c0c9c3; }
.inner-layout { display: grid; grid-template-columns: minmax(0, 1fr) 286px; gap: 24px; align-items: start; }
.page-card, .side-card { background: var(--card); border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow); }
.page-card { padding: clamp(25px, 4vw, 52px); overflow: hidden; }
.page-kicker { color: var(--red); font-size: 11px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; margin-bottom: 12px; }
.page-card h1 { margin: 0; color: var(--ink); font: 800 clamp(31px, 5vw, 53px)/1.22 var(--serif); letter-spacing: -.02em; }
.page-intro { max-width: 760px; margin: 19px 0 0; color: #536479; font-size: 17px; line-height: 1.95; }
.page-rule { width: 96px; height: 4px; background: linear-gradient(90deg, var(--red), var(--yellow)); margin: 28px 0 30px; border-radius: 99px; }
.page-card h2 { margin: 31px 0 10px; color: var(--green-dark); font: 800 24px/1.4 var(--serif); }
.page-card h2:first-of-type { margin-top: 0; }
.page-card h3 { margin: 24px 0 8px; color: var(--blue); font-size: 16px; }
.page-card p, .page-card li { color: #536479; font-size: 15px; line-height: 1.95; }
.page-card ul, .page-card ol { padding-left: 23px; margin: 10px 0 20px; }
.page-card li { margin: 7px 0; }
.page-card strong { color: var(--ink); }
.page-card blockquote { margin: 23px 0; padding: 17px 20px; border-left: 4px solid var(--yellow); background: #fff9e7; color: #54664b; font: 700 18px/1.7 var(--serif); }
.page-card a:not(.button) { color: var(--green); text-decoration: underline; text-decoration-color: rgba(0,123,69,.25); text-underline-offset: 3px; }
.page-card a.button, .button { display: inline-flex; align-items: center; justify-content: center; border-radius: 10px; padding: 12px 16px; background: var(--green); color: white; font-size: 13px; font-weight: 800; text-decoration: none; box-shadow: 0 7px 18px rgba(0,123,69,.18); }
.page-card a.button.alt, .button.alt { background: #eef7fb; color: var(--blue); box-shadow: none; }
.side-stack { display: grid; gap: 16px; position: sticky; top: 18px; }
.side-card { padding: 22px; }
.side-card h2 { margin: 0 0 14px; color: var(--green-dark); font: 800 20px/1.45 var(--serif); }
.side-card h3 { margin: 0 0 9px; color: var(--blue); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; }
.side-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }
.side-links { display: grid; gap: 9px; }
.side-links a { display: flex; align-items: center; justify-content: space-between; gap: 10px; color: #607187; font-size: 13px; padding: 8px 0; border-bottom: 1px solid #edf1ee; }
.side-links a::after { content: "↗"; color: var(--red); }
.side-links a:hover { color: var(--green); }
.info-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 17px 0 26px; }
.info-card { padding: 17px; background: #f6faf6; border: 1px solid #e1eee4; border-radius: 13px; }
.info-card strong { display: block; color: var(--green-dark); font-size: 15px; margin-bottom: 5px; }
.info-card span { color: var(--muted); font-size: 13px; line-height: 1.7; }
.callout { padding: 18px 20px; border-radius: 13px; background: linear-gradient(120deg, #edf9f0, #eef7fb); border: 1px solid #d7ebe0; margin: 22px 0; }
.callout strong { display: block; color: var(--green-dark); margin-bottom: 5px; }
.callout p { margin: 0; }
details { border-top: 1px solid var(--line); padding: 14px 0; }
details:last-child { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; color: var(--green-dark); font-weight: 800; font-size: 15px; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
summary::after { content: "+"; color: var(--red); font-size: 20px; line-height: 1; }
details[open] summary::after { content: "−"; }
details p { margin: 10px 0 2px; }
.sitemap-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 11px 22px; padding: 0; list-style: none; }
.sitemap-list li { margin: 0; padding: 9px 0; border-bottom: 1px solid #edf1ee; }
.sitemap-list a { display: flex; justify-content: space-between; gap: 10px; text-decoration: none !important; }
.contact-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 17px 0 26px; }
.contact-card { border: 1px solid var(--line); border-radius: 13px; padding: 17px; }
.contact-card .label { display: block; color: var(--red); font-size: 10px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 7px; }
.contact-card strong, .contact-card a { color: var(--green-dark); font-size: 15px; }
.contact-card p { margin: 6px 0 0; font-size: 13px; }
.inner-footer { background: #061528; color: #93a5bd; border-top: 4px solid var(--yellow); padding: 42px 0 20px; }
.inner-footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 25px; padding-bottom: 27px; }
.inner-footer-logo { width: 190px; max-width: 100%; background: #fff; padding: 5px; border-radius: 5px; }
.inner-footer h2 { margin: 0 0 13px; color: #fff; font: 800 17px var(--serif); }
.inner-footer h3 { margin: 19px 0 8px; color: #e7f2ff; font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
.inner-footer h3:first-child { margin-top: 0; }
.inner-footer p { font-size: 12px; line-height: 1.8; }
.inner-footer a { display: block; color: #91a4bc; font-size: 12px; margin: 7px 0; }
.inner-footer a:hover { color: #55cae8; }
.inner-footer-bottom { border-top: 1px solid rgba(165,193,224,.14); padding-top: 16px; display: flex; justify-content: space-between; gap: 18px; font-size: 11px; color: #6f829b; }
@media (max-width: 900px) {
  .inner-layout { grid-template-columns: 1fr; }
  .side-stack { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .inner-footer-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .inner-footer-grid > :first-child { grid-column: span 3; }
}
@media (max-width: 620px) {
  .inner-wrap { width: min(100% - 24px, 560px); }
  .inner-topline .inner-wrap { justify-content: center; text-align: center; }
  .inner-topline .inner-top-links { display: none; }
  .inner-masthead .inner-wrap { min-height: 88px; justify-content: center; }
  .inner-note, .inner-utility a:first-child { display: none; }
  .inner-logo { width: 245px; }
  .inner-nav .inner-wrap { gap: 15px; }
  .inner-nav a { font-size: 11px; }
  .inner-main { padding: 27px 0 45px; }
  .inner-layout { gap: 17px; }
  .page-card { padding: 24px 19px; border-radius: 16px; }
  .page-intro { font-size: 15px; }
  .page-card p, .page-card li { font-size: 14px; }
  .info-grid, .contact-grid, .sitemap-list { grid-template-columns: 1fr; }
  .side-stack { grid-template-columns: 1fr; }
  .inner-footer-grid { grid-template-columns: 1fr 1fr; gap: 20px 15px; }
  .inner-footer-grid > :first-child { grid-column: span 2; }
  .inner-footer-bottom { display: block; line-height: 1.8; }
  .inner-footer-bottom span { display: block; }
}