:root {
  --bg: #10151c;
  --bg-soft: #17202a;
  --surface: #f7f4ef;
  --surface-2: #ffffff;
  --ink: #17202a;
  --muted: #607080;
  --line: rgba(23, 32, 42, 0.14);
  --brand: #245f73;
  --brand-2: #3a7f62;
  --accent: #c69748;
  --accent-dark: #8a6129;
  --danger: #9c3f3f;
  --shadow: 0 22px 60px rgba(10, 15, 20, 0.18);
  --radius: 8px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: Arial, "Noto Sans Bengali", "SolaimanLipi", sans-serif;
  font-size: 17px;
  line-height: 1.7;
  letter-spacing: 0;
}

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

a {
  color: var(--brand);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent-dark);
}

button,
input,
textarea {
  font: inherit;
}

.screen-reader-text,
.skip-link:not(:focus) {
  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 {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 14px;
  background: var(--surface-2);
  color: var(--ink);
  border: 2px solid var(--accent);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 244, 239, 0.96);
  border-bottom: 1px solid rgba(23, 32, 42, 0.1);
  backdrop-filter: blur(12px);
}

.site-header__inner {
  width: min(100% - 32px, var(--max));
  min-height: 76px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 22px;
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
  flex: 0 0 auto;
}

.brand-mark__logo {
  width: 132px;
  height: 44px;
  object-fit: contain;
}

.brand-mark__text {
  display: grid;
  gap: 0;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.2;
}

.brand-mark__text strong {
  color: var(--ink);
  font-size: 22px;
  letter-spacing: 0;
}

.primary-nav {
  margin-left: auto;
}

.primary-nav__list,
.footer-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.primary-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
}

.primary-nav__list a {
  display: block;
  padding: 9px 10px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius);
}

.primary-nav__list a:hover,
.primary-nav__list .current-menu-item > a {
  background: rgba(36, 95, 115, 0.12);
  color: var(--brand);
}

.site-header__cta {
  flex: 0 0 auto;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
}

.button-primary,
.button-secondary,
.button-ghost,
.search-form__button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 800;
  text-decoration: none;
  line-height: 1.2;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button-primary,
.search-form__button {
  background: var(--accent);
  color: #16130d;
  box-shadow: 0 10px 24px rgba(198, 151, 72, 0.28);
}

.button-primary:hover,
.search-form__button:hover {
  background: #d6aa5a;
  color: #16130d;
  transform: translateY(-1px);
}

.button-primary--small {
  min-height: 40px;
  padding: 9px 13px;
  font-size: 14px;
}

.button-secondary {
  border-color: rgba(247, 244, 239, 0.28);
  background: rgba(247, 244, 239, 0.08);
  color: var(--surface-2);
}

.button-secondary:hover {
  background: rgba(247, 244, 239, 0.16);
  color: var(--surface-2);
}

.button-ghost {
  border-color: rgba(255, 255, 255, 0.28);
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
}

.button-ghost:hover {
  background: rgba(255, 255, 255, 0.16);
  color: #ffffff;
}

.site-main {
  min-height: 58vh;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(320px, 0.96fr);
  gap: 46px;
  align-items: center;
  width: min(100% - 32px, var(--max));
  margin: 0 auto;
  padding: 72px 0 38px;
}

.hero--guide {
  color: #f8fafc;
}

.hero--guide::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 76px;
  height: min(680px, 92vh);
  z-index: -1;
  background:
    linear-gradient(135deg, rgba(36, 95, 115, 0.94), rgba(16, 21, 28, 0.98) 54%, rgba(58, 127, 98, 0.92)),
    radial-gradient(circle at 72% 18%, rgba(198, 151, 72, 0.28), transparent 34%);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0;
}

.hero h1,
.page-hero h1 {
  margin: 0;
  font-size: clamp(34px, 6vw, 66px);
  line-height: 1.04;
  letter-spacing: 0;
}

.hero__lead {
  max-width: 680px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: 20px;
  line-height: 1.72;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero__meta span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 7px 11px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.92);
  font-size: 14px;
}

.hero__media {
  position: relative;
}

.hero__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.safety-card {
  position: absolute;
  right: 22px;
  bottom: -22px;
  width: min(88%, 360px);
  padding: 18px;
  border: 1px solid rgba(247, 244, 239, 0.34);
  border-radius: var(--radius);
  background: rgba(247, 244, 239, 0.94);
  color: var(--ink);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.2);
}

.safety-card strong {
  display: block;
  margin-bottom: 6px;
}

.safety-card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.56;
}

.trust-strip {
  width: min(100% - 32px, var(--max));
  margin: 52px auto 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  box-shadow: 0 14px 40px rgba(23, 32, 42, 0.08);
}

.trust-strip div {
  padding: 20px;
  background: var(--surface-2);
}

.trust-strip strong {
  display: block;
  color: var(--ink);
}

.trust-strip span {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 15px;
}

.guide-shell {
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr);
  gap: 40px;
  width: min(100% - 32px, var(--max));
  margin: 44px auto 72px;
  align-items: start;
}

.guide-toc {
  position: sticky;
  top: 96px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
  box-shadow: 0 12px 30px rgba(23, 32, 42, 0.08);
}

.toc-label {
  margin: 0 0 10px;
  color: var(--brand);
  font-size: 14px;
  font-weight: 900;
}

.guide-toc ol {
  margin: 0;
  padding-left: 20px;
}

.guide-toc li + li {
  margin-top: 7px;
}

.guide-toc a {
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
}

.longform-article,
.page-content {
  overflow-wrap: anywhere;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
  box-shadow: 0 18px 48px rgba(23, 32, 42, 0.08);
}

.longform-article {
  padding: clamp(22px, 5vw, 54px);
}

.longform-article h2,
.page-content h2 {
  margin: 44px 0 14px;
  color: #10232a;
  font-size: clamp(25px, 3vw, 38px);
  line-height: 1.16;
  letter-spacing: 0;
}

.longform-article h3,
.page-content h3 {
  margin: 28px 0 10px;
  font-size: 22px;
  line-height: 1.25;
}

.longform-article p,
.page-content p,
.longform-article li,
.page-content li {
  color: #263746;
}

.longform-article p,
.page-content p {
  margin: 0 0 18px;
}

.longform-article ul,
.longform-article ol,
.page-content ul,
.page-content ol {
  margin: 0 0 22px;
  padding-left: 24px;
}

.longform-article li + li,
.page-content li + li {
  margin-top: 8px;
}

.article-callout,
.risk-note,
.method-card,
.faq-item {
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.article-callout {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 22px;
  align-items: center;
  margin: 30px 0;
  padding: 20px;
  background: #edf4f2;
}

.article-callout img,
.article-image img {
  width: 100%;
  border-radius: var(--radius);
  object-fit: cover;
}

.article-callout img {
  aspect-ratio: 4 / 3;
}

.article-image {
  margin: 30px 0;
}

.article-image img {
  aspect-ratio: 16 / 9;
}

.article-image figcaption {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.risk-note {
  margin: 28px 0;
  padding: 18px 20px;
  background: #fff7ed;
  border-color: rgba(198, 151, 72, 0.34);
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 24px 0;
}

.method-card {
  padding: 16px;
  background: #f4f8f6;
}

.method-card strong {
  display: block;
  color: var(--brand);
}

.faq-list {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.faq-item {
  padding: 18px;
  background: #fbfaf7;
}

.faq-item h3 {
  margin-top: 0;
}

.page-hero {
  background: linear-gradient(135deg, var(--bg), var(--brand));
  color: #ffffff;
}

.page-hero__inner {
  width: min(100% - 32px, 940px);
  margin: 0 auto;
  padding: 70px 0 58px;
}

.page-hero p {
  max-width: 760px;
  color: rgba(255, 255, 255, 0.82);
}

.page-layout {
  width: min(100% - 32px, 940px);
  margin: 44px auto 72px;
}

.page-content {
  padding: clamp(22px, 5vw, 48px);
}

.listing-grid {
  width: min(100% - 32px, var(--max));
  margin: 44px auto 72px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.listing-card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
}

.search-form {
  display: flex;
  gap: 10px;
  max-width: 620px;
}

.search-form__field {
  min-width: 0;
  flex: 1;
  min-height: 46px;
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.site-footer {
  background: var(--bg);
  color: rgba(255, 255, 255, 0.82);
}

.site-footer__inner {
  width: min(100% - 32px, var(--max));
  margin: 0 auto;
  padding: 52px 0;
  display: grid;
  grid-template-columns: 1.3fr 1fr 0.9fr;
  gap: 36px;
}

.site-footer h2 {
  margin: 0 0 12px;
  color: #ffffff;
  font-size: 20px;
}

.site-footer p {
  margin: 0 0 12px;
}

.site-footer a {
  color: #f2c774;
}

.footer-brand {
  display: flex;
  gap: 16px;
}

.footer-brand img {
  width: 72px;
  height: 72px;
  object-fit: cover;
  border-radius: var(--radius);
}

.footer-nav__list {
  display: grid;
  gap: 8px;
}

.footer-nav__list a {
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 16px;
  text-align: center;
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
}

@media (max-width: 980px) {
  .site-header__inner {
    flex-wrap: wrap;
    gap: 12px;
    padding: 12px 0;
  }

  .nav-toggle {
    display: inline-block;
    margin-left: auto;
  }

  .primary-nav {
    display: none;
    order: 3;
    width: 100%;
    margin-left: 0;
  }

  .primary-nav.is-open {
    display: block;
  }

  .primary-nav__list {
    display: grid;
    gap: 2px;
  }

  .site-header__cta {
    order: 2;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 42px;
  }

  .hero--guide::before {
    top: 96px;
    height: 980px;
  }

  .trust-strip,
  .guide-shell,
  .site-footer__inner,
  .listing-grid {
    grid-template-columns: 1fr;
  }

  .guide-toc {
    position: static;
  }

  .article-callout,
  .method-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .site-header__inner,
  .hero,
  .trust-strip,
  .guide-shell,
  .page-hero__inner,
  .page-layout,
  .site-footer__inner,
  .listing-grid {
    width: min(100% - 24px, var(--max));
  }

  .brand-mark__logo {
    width: 98px;
  }

  .brand-mark__text {
    display: none;
  }

  .site-header__cta {
    width: 100%;
  }

  .site-header__cta .button-primary {
    width: 100%;
  }

  .hero h1,
  .page-hero h1 {
    font-size: 34px;
  }

  .hero__lead {
    font-size: 18px;
  }

  .hero__actions,
  .search-form {
    flex-direction: column;
  }

  .hero__actions a,
  .search-form__button {
    width: 100%;
  }

  .safety-card {
    position: static;
    width: 100%;
    margin-top: 12px;
  }

  .longform-article,
  .page-content {
    padding: 20px;
  }
}

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