:root {
  --primary: #0b3f91;
  --primary-dark: #062b67;
  --navy: #031f4f;
  --navy-deep: #00143a;
  --blue: #1459c8;
  --light-blue: #eaf2ff;
  --white: #ffffff;
  --text: #101828;
  --muted: #667085;
  --border: #d7e3f7;
  --shadow: 0 18px 50px rgba(3, 31, 79, 0.14);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--white);
  font-family: "Noto Sans Bengali", "Hind Siliguri", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

svg {
  display: block;
  width: 1em;
  height: 1em;
  fill: currentColor;
}

.ltti-icon {
  fill: none;
  stroke: currentColor;
}

.container {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link:focus {
  z-index: 9999;
  top: 10px;
  left: 10px;
  width: auto;
  height: auto;
  padding: 10px 14px;
  clip: auto;
  background: var(--white);
  color: var(--primary);
  border-radius: 8px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--white);
  transition: box-shadow 0.25s ease;
}

.site-header.is-scrolled {
  box-shadow: 0 10px 35px rgba(3, 31, 79, 0.12);
}

.top-bar {
  min-height: 46px;
  background: linear-gradient(90deg, var(--navy-deep), var(--primary));
  color: var(--white);
  font-size: 14px;
}

.top-bar__inner {
  min-height: 46px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.top-bar__left,
.top-bar__right,
.top-bar__item {
  display: flex;
  align-items: center;
  gap: 14px;
}

.top-bar__item {
  gap: 7px;
  white-space: nowrap;
}

.top-bar svg {
  font-size: 15px;
}

.social-list {
  display: flex;
  align-items: center;
  gap: 12px;
}

.social-list a {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  color: var(--white);
  background: var(--blue);
  border-radius: 50%;
  transition: transform 0.2s ease, background 0.2s ease;
}

.social-list--small a {
  width: 22px;
  height: 22px;
  background: rgba(255, 255, 255, 0.16);
}

.social-list a:hover {
  transform: translateY(-2px);
  background: var(--primary-dark);
}

.main-header {
  background: var(--white);
}

.main-header__inner {
  min-height: 108px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.site-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  flex: 0 0 auto;
}

.custom-logo {
  width: auto;
  height: 86px;
  max-width: 320px;
  max-height: 86px;
  object-fit: contain;
  transition: transform 0.25s ease, filter 0.25s ease;
}

.site-brand:hover .custom-logo,
.site-brand:hover .site-logo-fallback {
  transform: translateY(-2px);
}

.site-logo-fallback {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--navy);
}

.site-logo-mark {
  display: grid;
  place-items: center;
  width: 66px;
  height: 66px;
  color: var(--primary);
  border: 3px solid var(--primary);
  border-radius: 50%;
  background: var(--light-blue);
}

.site-logo-mark svg {
  width: 42px;
  height: 42px;
}

.site-logo-text {
  display: grid;
  gap: 0;
  font-weight: 800;
  line-height: 1.18;
  font-size: 25px;
}

.site-logo-text em {
  font-style: normal;
}

.site-tagline {
  color: var(--primary-dark);
  font-size: 14px;
  font-weight: 600;
}

.primary-nav .menu,
.mobile-nav .menu {
  display: flex;
  align-items: center;
  gap: 28px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.primary-nav a {
  position: relative;
  display: inline-flex;
  padding: 18px 0;
  color: #061b42;
  font-weight: 700;
  font-size: 15px;
  transition: color 0.2s ease;
}

.primary-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 7px;
  height: 3px;
  background: var(--primary);
  border-radius: 999px;
  transform: scaleX(0);
  transition: transform 0.2s ease;
}

.primary-nav a:hover,
.primary-nav .current-menu-item > a {
  color: var(--primary);
}

.primary-nav a:hover::after,
.primary-nav .current-menu-item > a::after {
  transform: scaleX(1);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--border);
  background: var(--white);
  border-radius: 10px;
  cursor: pointer;
  color: var(--navy);
  place-items: center;
}

.menu-toggle svg,
.mobile-menu__close svg {
  width: 24px;
  height: 24px;
}

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 1100;
  visibility: hidden;
  background: rgba(0, 20, 58, 0.48);
  opacity: 0;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.mobile-menu.is-open {
  visibility: visible;
  opacity: 1;
}

.mobile-menu__panel {
  width: min(360px, 88vw);
  min-height: 100%;
  padding: 24px;
  background: var(--white);
  transform: translateX(-100%);
  transition: transform 0.25s ease;
}

.mobile-menu.is-open .mobile-menu__panel {
  transform: translateX(0);
}

.mobile-menu__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
}

.mobile-menu__close {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 0;
  color: var(--navy);
  background: var(--light-blue);
  border-radius: 10px;
  cursor: pointer;
}

.mobile-nav .menu {
  display: grid;
  gap: 0;
  margin-top: 16px;
}

.mobile-nav a {
  display: block;
  padding: 14px 0;
  color: var(--navy);
  font-weight: 800;
  border-bottom: 1px solid var(--border);
}

.hero-section {
  position: relative;
  overflow: hidden;
  min-height: 650px;
  color: var(--white);
  background:
    linear-gradient(115deg, rgba(0, 20, 58, 0.98), rgba(11, 63, 145, 0.96)),
    radial-gradient(circle at 72% 26%, rgba(255, 255, 255, 0.13), transparent 34%);
  background-size: 100% 100%, 130% 130%;
  animation: lttiGlowPulse 9s ease-in-out infinite;
}

.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--hero-bg-image);
  background-size: cover;
  background-position: center;
  opacity: 0.2;
}

.hero-section::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.18;
  background:
    repeating-linear-gradient(90deg, transparent 0 92px, rgba(255, 255, 255, 0.12) 92px 94px),
    linear-gradient(145deg, transparent 12%, rgba(255, 255, 255, 0.16) 12% 13%, transparent 13% 100%);
  transform: translateZ(0);
  animation: lttiBgDrift 18s ease-in-out infinite alternate;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.04fr 1fr;
  align-items: center;
  gap: 60px;
  min-height: 650px;
  padding: 58px 0 120px;
}

.hero-badge {
  display: inline-flex;
  margin-bottom: 18px;
  padding: 8px 14px;
  color: #dbeafe;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  font-weight: 700;
  backdrop-filter: blur(14px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(42px, 5.2vw, 72px);
  line-height: 1.22;
  letter-spacing: 0;
  font-weight: 800;
}

.hero-copy p {
  max-width: 620px;
  margin: 22px 0 34px;
  color: #eef5ff;
  font-size: 20px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.btn,
.course-link,
.text-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 12px 24px;
  border-radius: 9px;
  font-weight: 800;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn svg,
.course-link svg {
  width: 18px;
  height: 18px;
}

.btn:hover,
.course-link:hover,
.text-link:hover {
  transform: translateY(-2px);
}

.btn svg,
.course-link svg {
  transition: transform 0.2s ease;
}

.btn:hover svg,
.course-link:hover svg {
  transform: translateX(4px);
}

.btn--light {
  color: var(--primary-dark);
  background: var(--white);
}

.btn--outline {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.64);
}

.btn--primary {
  color: var(--white);
  background: var(--primary);
}

.hero-card {
  position: relative;
  overflow: hidden;
  width: min(100%, 540px);
  height: 360px;
  margin-left: auto;
  border: 8px solid rgba(255, 255, 255, 0.95);
  border-radius: 28px;
  background: var(--white);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.28);
  animation: lttiFloat 6s ease-in-out infinite;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-card:hover {
  transform: translateY(-7px) scale(1.01);
  box-shadow: 0 36px 90px rgba(0, 0, 0, 0.34);
}

.hero-card img,
.hero-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.hero-card:hover img {
  transform: scale(1.04);
}

.hero-signboard,
.hero-placeholder {
  display: grid;
  align-content: stretch;
  gap: 0;
  position: absolute;
  inset: 0;
  padding: 38px;
  color: var(--white);
  background: linear-gradient(150deg, #f7fbff, #d8e7ff 48%, #ffffff);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.hero-signboard.is-visible,
.hero-placeholder.is-visible {
  opacity: 1;
  visibility: visible;
}

.hero-signboard__top {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  color: var(--navy);
  background: rgba(255, 255, 255, 0.92);
  border: 2px solid var(--primary);
  border-radius: 12px 12px 0 0;
}

.hero-signboard__top span {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  color: var(--primary);
  background: var(--light-blue);
  border-radius: 50%;
  flex: 0 0 auto;
}

.hero-signboard__top strong {
  font-size: 25px;
  line-height: 1.3;
}

.hero-signboard__rows {
  display: grid;
  gap: 8px;
  padding: 18px 16px;
  background: var(--primary);
}

.hero-signboard__rows div {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  padding-bottom: 8px;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.35);
  font-size: 17px;
  font-weight: 800;
}

.hero-signboard__rows div:last-child {
  border-bottom: 0;
}

.hero-signboard__rows em {
  font-style: normal;
}

.hero-signboard__bottom {
  display: grid;
  place-items: center;
  padding: 12px 16px;
  color: var(--white);
  background: var(--navy);
  border-radius: 0 0 12px 12px;
  font-size: 24px;
  font-weight: 900;
}

.hero-placeholder strong {
  display: block;
  padding: 14px 16px;
  color: var(--navy);
  background: rgba(255, 255, 255, 0.92);
  border: 2px solid var(--primary);
  font-size: 27px;
  line-height: 1.35;
}

.hero-placeholder span,
.hero-placeholder em {
  padding: 8px 14px;
  color: var(--white);
  background: var(--primary);
  font-size: 19px;
  font-style: normal;
  font-weight: 800;
}

.hero-placeholder em {
  background: var(--navy);
  font-size: 24px;
  text-align: center;
}

.feature-strip-section {
  position: relative;
  z-index: 5;
  margin-top: -72px;
}

.feature-strip {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  overflow: hidden;
  background: var(--white);
  border-radius: 18px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(215, 227, 247, 0.76);
}

.feature-item {
  display: grid;
  justify-items: center;
  align-content: start;
  min-height: 152px;
  padding: 28px 20px;
  text-align: center;
  border-right: 1px solid var(--border);
  transition: transform 0.25s ease, background 0.25s ease;
}

.feature-item:last-child {
  border-right: 0;
}

.feature-item span {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  margin-bottom: 14px;
  color: var(--primary);
  background: var(--light-blue);
  border-radius: 50%;
  transition: transform 0.25s ease, box-shadow 0.25s ease, color 0.25s ease;
}

.feature-item svg {
  width: 34px;
  height: 34px;
}

.feature-item:hover {
  z-index: 1;
  background: #f7fbff;
  transform: translateY(-5px);
}

.feature-item:hover span {
  color: var(--white);
  background: var(--primary);
  box-shadow: 0 0 0 9px rgba(20, 89, 200, 0.12), 0 14px 30px rgba(20, 89, 200, 0.22);
}

.feature-item p {
  margin: 0;
  color: #18233d;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.55;
}

.section-padding {
  padding: 76px 0 28px;
}

.section-heading {
  text-align: center;
  margin-bottom: 34px;
}

.section-heading span {
  display: block;
  margin-bottom: 7px;
  color: var(--primary);
  font-weight: 800;
}

.section-heading h2 {
  position: relative;
  display: inline-block;
  margin: 0;
  color: var(--primary-dark);
  font-size: 33px;
  line-height: 1.35;
  font-weight: 900;
}

.section-heading h2::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -12px;
  width: 54px;
  height: 3px;
  background: var(--primary);
  border-radius: 99px;
  transform: translateX(-50%);
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
}

.course-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 390px;
  padding: 28px 26px 24px;
  text-align: center;
  background: var(--white);
  border: 2px solid var(--blue);
  border-radius: 12px;
  box-shadow: 0 16px 42px rgba(20, 89, 200, 0.08);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.course-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 24px 55px rgba(3, 31, 79, 0.16);
}

.course-card--purple {
  border-color: #6d39d8;
}

.course-card--green {
  border-color: #0a8e46;
}

.course-card__icon {
  width: min(100%, 260px);
  height: 160px;
  margin-bottom: 10px;
}

.course-card h3 {
  margin: 0 0 8px;
  color: var(--blue);
  font-size: 22px;
  line-height: 1.35;
  font-weight: 900;
}

.course-card--purple h3 {
  color: #6d39d8;
}

.course-card--green h3 {
  color: #0a8e46;
}

.duration-badge {
  display: inline-flex;
  min-width: 78px;
  justify-content: center;
  padding: 3px 12px;
  color: var(--blue);
  background: #e8f0ff;
  border-radius: 999px;
  font-weight: 800;
  font-size: 14px;
}

.course-card--purple .duration-badge {
  color: #6d39d8;
  background: #f0e9ff;
}

.course-card--green .duration-badge {
  color: #0a8e46;
  background: #e5f8ee;
}

.course-card p {
  flex: 1;
  margin: 18px 0 18px;
  color: #26324d;
  font-size: 15px;
  line-height: 1.65;
}

.course-link {
  min-height: 42px;
  min-width: 184px;
  padding: 8px 18px;
  color: var(--blue);
  border: 1px solid currentColor;
  border-radius: 8px;
  font-size: 15px;
}

.course-card--purple .course-link {
  color: #6d39d8;
}

.course-card--green .course-link {
  color: #0a8e46;
}

.info-section {
  padding: 26px 0 42px;
}

.info-panel {
  display: grid;
  grid-template-columns: 1.18fr 1fr 1.05fr;
  gap: 30px;
  padding: 36px 38px;
  color: var(--white);
  background: linear-gradient(135deg, var(--navy-deep), var(--navy) 42%, var(--primary));
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.info-col {
  padding-right: 28px;
  border-right: 1px dashed rgba(255, 255, 255, 0.35);
}

.info-col:last-child {
  padding-right: 0;
  border-right: 0;
}

.info-col h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-size: 22px;
  line-height: 1.35;
}

.info-col h3 svg {
  width: 28px;
  height: 28px;
  color: var(--accent);
  flex: 0 0 auto;
}

.info-col ul {
  margin: 0;
  padding-left: 20px;
}

.info-col li,
.info-contact {
  color: #f3f7ff;
  font-size: 16px;
  line-height: 1.65;
}

.info-contact {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 10px;
  margin: 13px 0;
}

.info-contact svg {
  margin-top: 4px;
  color: var(--white);
}

.site-footer {
  background: var(--white);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.8fr 1.05fr 0.8fr;
  gap: 42px;
  padding: 42px 0;
}

.footer-brand h3,
.footer-links h4,
.footer-social h4 {
  margin: 0 0 12px;
  color: var(--navy);
  font-size: 20px;
  line-height: 1.35;
  font-weight: 900;
}

.footer-brand p {
  margin: 0;
  color: #213051;
  font-weight: 700;
}

.footer-brand .site-logo-fallback {
  margin-bottom: 12px;
}

.footer-brand .site-logo-mark {
  width: 62px;
  height: 62px;
}

.footer-links ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links li {
  margin: 6px 0;
}

.footer-links a {
  color: #1b2845;
  font-weight: 600;
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-bottom {
  padding: 14px 0;
  color: var(--white);
  background: linear-gradient(90deg, var(--navy-deep), var(--primary));
  text-align: center;
  font-size: 14px;
}

.page-hero {
  padding: 84px 0;
  color: var(--white);
  background: linear-gradient(115deg, var(--navy-deep), var(--primary));
}

.page-hero h1 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(34px, 4vw, 52px);
  line-height: 1.32;
  font-weight: 900;
}

.page-hero p {
  max-width: 760px;
  margin: 14px 0 0;
  color: #e9f2ff;
}

.content-section {
  padding: 58px 0;
  background: #f8fbff;
}

.content-wrap {
  max-width: 920px;
}

.entry-content-box,
.post-card,
.not-found-box {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 14px 40px rgba(3, 31, 79, 0.08);
}

.entry-content-box {
  padding: 34px;
}

.entry-content h2,
.entry-content h3,
.entry-content h4 {
  color: var(--navy);
  line-height: 1.35;
}

.entry-content a {
  color: var(--primary);
  font-weight: 800;
}

.single-thumb {
  overflow: hidden;
  margin: -34px -34px 28px;
  border-radius: 14px 14px 0 0;
}

.single-thumb img {
  width: 100%;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.post-card {
  overflow: hidden;
}

.post-card__thumb img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.post-card__body {
  padding: 22px;
}

.post-card h2 {
  margin: 0 0 10px;
  color: var(--navy);
  font-size: 22px;
  line-height: 1.35;
}

.post-card p {
  margin: 0 0 14px;
  color: var(--muted);
}

.text-link {
  min-height: auto;
  padding: 0;
  color: var(--primary);
}

.pagination-wrap {
  grid-column: 1 / -1;
}

.not-found-section {
  min-height: 520px;
  display: grid;
  place-items: center;
  padding: 80px 0;
  background: #f8fbff;
}

.not-found-box {
  max-width: 640px;
  margin-inline: auto;
  padding: 54px 34px;
  text-align: center;
}

.not-found-box span {
  display: block;
  color: var(--primary);
  font-size: 78px;
  line-height: 1;
  font-weight: 900;
}

.not-found-box h1 {
  margin: 14px 0 28px;
  color: var(--navy);
}

.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 999;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  color: var(--white);
  background: var(--primary);
  border: 0;
  border-radius: 50%;
  box-shadow: var(--shadow);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px) rotate(-90deg);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) rotate(-90deg);
}

[data-reveal],
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-reveal].is-visible,
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes lttiFloat {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

@keyframes lttiFadeUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes lttiGlowPulse {
  0%, 100% {
    background-position: center, 0% 50%;
  }
  50% {
    background-position: center, 100% 50%;
  }
}

@keyframes lttiBgDrift {
  from {
    transform: translateX(-18px);
  }
  to {
    transform: translateX(18px);
  }
}

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

  [data-reveal],
  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}