:root {
  --bg: #f6f8fb;
  --paper: #ffffff;
  --ink: #15221c;
  --muted: #66736d;
  --green: #07733d;
  --green-dark: #044625;
  --red: #e62d22;
  --orange: #ff8f1d;
  --gold: #f5c44d;
  --blue: #1765d8;
  --line: #dfe7e3;
  --shadow: 0 18px 42px rgba(8, 51, 32, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Noto Sans Bengali", "Hind Siliguri", "SolaimanLipi", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.wrap { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.topbar {
  background: var(--green-dark);
  color: #eefbf4;
  font-size: 14px;
  border-bottom: 4px solid var(--gold);
}
.topbar .wrap {
  min-height: 38px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.notice { display: flex; align-items: center; gap: 8px; }
.notice strong { color: var(--gold); }
.site-header {
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 10px 24px rgba(7, 42, 27, .08);
}
.head-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 14px 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  letter-spacing: 0;
  font-size: 32px;
  color: var(--green);
}
.brand-badge {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  color: #fff;
  background: linear-gradient(135deg, var(--red), var(--green));
  border: 3px solid var(--gold);
  box-shadow: 0 10px 22px rgba(230, 45, 34, .25);
}
.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.nav a {
  font-weight: 800;
  font-size: 15px;
  padding: 10px 12px;
  border-radius: 6px;
  color: var(--green-dark);
}
.nav a:hover, .nav a.active {
  color: #fff;
  background: linear-gradient(135deg, var(--green), var(--red));
}
.hero {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(115deg, rgba(255,255,255,.95) 0%, rgba(255,255,255,.82) 46%, rgba(255,255,255,.10) 74%),
    url("/assets/9bd-hero.png") center right / cover no-repeat;
  min-height: 620px;
  border-bottom: 1px solid var(--line);
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 8px;
  background: linear-gradient(90deg, var(--green), var(--red), var(--gold), var(--blue));
}
.hero-inner {
  min-height: 620px;
  display: grid;
  align-items: center;
  padding: 56px 0 72px;
}
.hero-copy { width: min(650px, 100%); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 999px;
  color: var(--green-dark);
  background: #fff;
  border: 1px solid var(--line);
  font-weight: 900;
  box-shadow: 0 8px 20px rgba(0,0,0,.06);
}
.eyebrow i {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--red);
  box-shadow: 16px 0 0 var(--green), 32px 0 0 var(--gold);
}
h1, h2, h3 { line-height: 1.22; margin: 0; letter-spacing: 0; }
h1 {
  margin-top: 18px;
  font-size: clamp(40px, 6vw, 74px);
  max-width: 12ch;
}
.hero p {
  margin: 18px 0 0;
  max-width: 610px;
  color: #43524b;
  font-size: 18px;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border-radius: 6px;
  font-weight: 900;
  color: #fff;
  box-shadow: 0 12px 24px rgba(7, 115, 61, .18);
}
.btn.green { background: linear-gradient(135deg, var(--green), var(--green-dark)); }
.btn.red { background: linear-gradient(135deg, var(--red), var(--orange)); }
.btn.blue { background: linear-gradient(135deg, var(--blue), #0b3f9d); }
.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 32px;
}
.stat {
  background: rgba(255,255,255,.92);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  box-shadow: var(--shadow);
}
.stat strong {
  display: block;
  color: var(--red);
  font-size: 24px;
  line-height: 1.1;
}
.stat span { color: var(--muted); font-weight: 700; font-size: 14px; }
.band { padding: 64px 0; }
.band.white { background: var(--paper); }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 24px;
  margin-bottom: 26px;
}
.section-head h2 { font-size: clamp(28px, 4vw, 44px); }
.section-head p { max-width: 600px; margin: 8px 0 0; color: var(--muted); }
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 10px 26px rgba(9, 51, 34, .08);
}
.card .thumb {
  min-height: 170px;
  background-size: cover;
  background-position: center;
  position: relative;
}
.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 60px;
  min-height: 30px;
  padding: 5px 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--red), var(--orange));
  color: #fff;
  font-weight: 900;
  font-size: 13px;
}
.thumb .pill {
  position: absolute;
  left: 14px;
  top: 14px;
}
.card-body { padding: 18px; }
.card h3 { font-size: 23px; color: var(--green-dark); }
.card p { color: var(--muted); margin: 10px 0 0; }
.link-line {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  color: var(--red);
  font-weight: 900;
  margin-top: 14px;
}
.split {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, .98fr);
  gap: 32px;
  align-items: center;
}
.feature-img {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.feature-list {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}
.feature-item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--line);
}
.icon-dot {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green), var(--red));
  color: #fff;
  font-weight: 900;
}
.promo {
  background: linear-gradient(135deg, var(--green-dark), var(--green) 42%, var(--red));
  color: #fff;
  padding: 34px;
  border-radius: 8px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 22px;
  align-items: center;
  box-shadow: var(--shadow);
}
.promo p { margin: 8px 0 0; color: rgba(255,255,255,.86); }
.promo .btn { background: #fff; color: var(--green-dark); }
.page-hero {
  background:
    linear-gradient(120deg, rgba(4,70,37,.92), rgba(230,45,34,.82)),
    url("/assets/9bd-hero.png") center / cover no-repeat;
  color: #fff;
  padding: 58px 0;
}
.page-hero h1 { max-width: 900px; font-size: clamp(34px, 5vw, 58px); }
.page-hero p { max-width: 760px; color: rgba(255,255,255,.88); margin: 14px 0 0; }
.breadcrumb {
  color: rgba(255,255,255,.88);
  margin-bottom: 12px;
  font-weight: 800;
}
.content-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 28px;
  align-items: start;
}
.article {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 28px;
  box-shadow: var(--shadow);
}
.article h2 { margin-top: 28px; font-size: 29px; color: var(--green-dark); }
.article p { color: #34443c; }
.article ul { padding-left: 22px; }
.article li { margin: 8px 0; }
.article table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  overflow: hidden;
  border-radius: 8px;
}
.article th, .article td {
  padding: 12px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
.article th {
  background: var(--green-dark);
  color: #fff;
}
.side {
  display: grid;
  gap: 16px;
}
.side-box {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  box-shadow: 0 8px 20px rgba(7, 42, 27, .06);
}
.side-box h3 { color: var(--green-dark); font-size: 22px; }
.side-box a {
  display: block;
  padding: 10px 0;
  color: var(--red);
  font-weight: 900;
  border-bottom: 1px dashed var(--line);
}
.side-box a:last-child { border-bottom: 0; }
.warning {
  margin-top: 24px;
  padding: 18px;
  border-radius: 8px;
  background: #fff7e0;
  border: 1px solid #f3d37a;
}
.faq { display: grid; gap: 12px; margin-top: 18px; }
.faq-item {
  padding: 16px;
  border-radius: 8px;
  background: #f8fbf9;
  border: 1px solid var(--line);
}
.faq-item strong { display: block; color: var(--green-dark); margin-bottom: 6px; }
.footer {
  background: #071d12;
  color: #dce9e2;
  padding: 42px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr repeat(3, 1fr);
  gap: 26px;
}
.footer h3 { color: #fff; font-size: 20px; margin-bottom: 12px; }
.footer a { display: block; color: #dce9e2; margin: 7px 0; }
.footer small {
  display: block;
  color: #9fb4aa;
  margin-top: 28px;
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 18px;
}
@media (max-width: 920px) {
  .head-row { align-items: flex-start; flex-direction: column; }
  .nav { justify-content: flex-start; }
  .hero, .hero-inner { min-height: auto; }
  .hero { background-position: center bottom; }
  .hero-inner { padding-top: 44px; padding-bottom: 300px; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split, .content-layout, .promo { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .wrap { width: min(100% - 22px, 1180px); }
  .topbar .wrap { align-items: flex-start; flex-direction: column; padding: 8px 0; }
  .brand { font-size: 27px; }
  .brand-badge { width: 46px; height: 46px; }
  .nav a { padding: 8px 9px; font-size: 14px; }
  .hero-inner { padding-bottom: 245px; }
  h1 { font-size: 38px; }
  .stats, .grid, .footer-grid { grid-template-columns: 1fr; }
  .band { padding: 46px 0; }
  .section-head { align-items: flex-start; flex-direction: column; }
  .article { padding: 20px; }
  .article th, .article td { display: block; width: 100%; }
}