:root {
  --green-950: #073f2b;
  --green-900: #075537;
  --green-800: #06643f;
  --green-700: #0a7550;
  --mint-100: #eaf5f1;
  --mint-50: #f4faf8;
  --ink: #17211d;
  --muted: #65736d;
  --line: #dce5e1;
  --white: #fff;
  --shadow: 0 18px 48px rgba(7, 63, 43, .08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    radial-gradient(circle at 78% 8%, rgba(85, 164, 144, .13), transparent 30rem),
    linear-gradient(180deg, #f2f9f7 0, #fff 34rem);
  font-family: "Noto Sans Bengali", "Segoe UI", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.page-shell { min-height: calc(100vh - 84px); }

.site-header, main, .footer-inner {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  min-height: 104px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border-bottom: 1px solid rgba(7, 85, 55, .14);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.brand img {
  width: 61px;
  height: 61px;
  object-fit: contain;
  filter: drop-shadow(0 4px 5px rgba(0, 0, 0, .08));
}

.brand-copy { display: grid; gap: 2px; font-size: 13px; color: #476159; }
.brand-copy strong { color: var(--green-900); font-size: 18px; line-height: 1.2; letter-spacing: -.2px; }
.brand-copy .eyebrow { font-size: 10px; letter-spacing: .04em; color: #6c7d77; }

.secure-label {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--green-900);
  font-size: 13px;
  font-weight: 700;
}

.secure-label svg, .notice-icon svg { width: 22px; fill: none; stroke: currentColor; stroke-width: 1.7; }

.hero {
  position: relative;
  min-height: 310px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  right: 9%;
  bottom: -110px;
  width: 510px;
  height: 270px;
  border: 1px solid rgba(7, 93, 60, .1);
  border-radius: 50%;
  transform: rotate(-10deg);
  box-shadow: 0 0 0 42px rgba(7, 93, 60, .025), 0 0 0 85px rgba(7, 93, 60, .018);
}

.hero-copy { position: relative; z-index: 1; padding: 58px 0 50px; }
.section-kicker { display: inline-flex; align-items: center; gap: 10px; color: var(--green-700); font-size: 11px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.section-kicker span { width: 28px; height: 2px; background: var(--green-700); }
.hero h1 { margin: 15px 0 13px; max-width: 780px; font-size: clamp(38px, 5vw, 64px); line-height: 1.08; letter-spacing: -2.6px; font-weight: 750; }
.hero h1 em { color: var(--green-800); font-style: normal; }
.hero p { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.65; }

.hero-mark { position: absolute; right: 4%; opacity: .07; color: var(--green-900); }
.hero-mark svg { width: 230px; fill: none; stroke: currentColor; stroke-width: 3; }

.platforms {
  position: relative;
  z-index: 2;
  margin-bottom: 42px;
  padding: 38px;
  border: 1px solid rgba(7, 85, 55, .11);
  border-radius: 24px;
  background: rgba(255, 255, 255, .92);
  box-shadow: var(--shadow);
}

.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 28px; }
.section-heading h2 { margin: 9px 0 0; color: var(--green-950); font-size: clamp(25px, 3vw, 34px); letter-spacing: -.8px; }
.section-heading p { margin: 0; color: var(--muted); font-size: 14px; }

.platform-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }

.platform-card {
  position: relative;
  min-height: 292px;
  padding: 25px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: var(--white);
  text-decoration: none;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.platform-card::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 4px;
  background: var(--green-800);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease;
}

.platform-card:hover, .platform-card:focus-visible { transform: translateY(-6px); border-color: rgba(6, 100, 63, .35); box-shadow: 0 20px 35px rgba(7, 63, 43, .12); outline: none; }
.platform-card:hover::after, .platform-card:focus-visible::after { transform: scaleX(1); }

.card-number { position: absolute; right: 21px; top: 19px; color: #d3dfda; font-size: 13px; font-weight: 800; letter-spacing: .12em; }
.icon-wrap { width: 62px; height: 62px; display: grid; place-items: center; border-radius: 50%; color: var(--green-800); background: var(--mint-100); border: 1px solid #d4e8e0; }
.icon-wrap svg { width: 31px; fill: none; stroke: currentColor; stroke-width: 1.65; stroke-linecap: round; stroke-linejoin: round; }
.card-content { display: grid; margin-top: 25px; }
.card-tag { margin-bottom: 8px; color: var(--green-700); font-size: 10px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.card-content strong { color: var(--green-950); font-size: 25px; letter-spacing: -.5px; }
.card-content > span:last-child { min-height: 44px; margin-top: 7px; color: var(--muted); font-size: 13px; line-height: 1.55; }
.card-action { margin-top: auto; padding-top: 18px; display: flex; justify-content: space-between; align-items: center; border-top: 1px solid #edf1ef; color: var(--green-800); font-size: 13px; font-weight: 750; }
.card-action svg { width: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; transition: transform .2s ease; }
.platform-card:hover .card-action svg { transform: translateX(4px); }

.notice {
  margin-bottom: 54px;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 15px;
  border-radius: 14px;
  color: #345249;
  background: var(--mint-50);
  border: 1px solid #dbece6;
}

.notice-icon { width: 42px; height: 42px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 50%; color: var(--green-800); background: #fff; }
.notice > div:nth-child(2) { display: grid; gap: 3px; }
.notice strong { color: var(--green-950); font-size: 14px; }
.notice span { font-size: 12px; }
.status { margin-left: auto; white-space: nowrap; font-weight: 700; color: var(--green-800); }
.status i { display: inline-block; width: 7px; height: 7px; margin-right: 7px; border-radius: 50%; background: #30a46c; box-shadow: 0 0 0 4px rgba(48, 164, 108, .12); }

footer { min-height: 84px; display: flex; align-items: center; color: rgba(255,255,255,.78); background: var(--green-800); font-size: 11px; }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; }
.footer-inner i { display: inline-block; width: 3px; height: 3px; margin: 0 10px; border-radius: 50%; background: rgba(255,255,255,.6); vertical-align: middle; }

@media (max-width: 860px) {
  .platform-grid { grid-template-columns: 1fr; }
  .platform-card { min-height: 245px; }
  .hero-mark { right: -60px; }
}

@media (max-width: 640px) {
  .site-header, main, .footer-inner { width: min(100% - 28px, 1180px); }
  .site-header { min-height: 94px; }
  .brand img { width: 51px; height: 51px; }
  .brand-copy strong { font-size: 15px; }
  .brand-copy .eyebrow, .brand-copy > span:last-child { font-size: 9px; }
  .secure-label { display: none; }
  .hero { min-height: 290px; }
  .hero-copy { padding: 45px 0; }
  .hero h1 { font-size: 37px; letter-spacing: -1.5px; }
  .hero p { max-width: 90%; font-size: 14px; }
  .hero-mark { right: -100px; }
  .platforms { padding: 23px 18px; border-radius: 18px; }
  .section-heading { display: block; }
  .section-heading p { margin-top: 8px; }
  .notice { align-items: flex-start; padding: 17px; }
  .status { display: none; }
  .footer-inner { padding: 22px 0; flex-direction: column; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}