:root {
  --bg: #07110e;
  --bg-alt: #0d1b17;
  --card: #12241e;
  --card-hover: #183027;
  --lime: #b8f34a;
  --cyan: #3dd6c6;
  --text: #f3f8f5;
  --muted: #afc2b8;
  --border: #29453a;
  --warning: #f0b44d;
  --error: #e16f73;
  --focus: #d3ff7c;
  --radius: 14px;
  --shadow: 0 14px 36px rgba(0, 0, 0, .24);
  --container: 1200px;
  --reading: 800px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 86px; }
body {
  margin: 0;
  overflow-wrap: anywhere;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans Bengali", "Nirmala UI", "Vrinda", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}
body.menu-open { overflow: hidden; }
a { color: var(--cyan); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--lime); }
a:focus-visible, button:focus-visible, summary:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3 { margin: 0 0 .65em; line-height: 1.2; letter-spacing: -.02em; }
h1 { max-width: 18ch; font-size: clamp(2.25rem, 5.4vw, 4.9rem); }
h2 { font-size: clamp(1.75rem, 3.2vw, 3rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1.15em; }
.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 { position: fixed; top: 8px; left: 8px; z-index: 999; padding: 10px 14px; transform: translateY(-160%); background: var(--focus); color: var(--bg); font-weight: 700; }
.skip-link:focus { transform: translateY(0); }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; min-width: 0; }
.text-column { width: min(calc(100% - 40px), var(--reading)); margin-inline: auto; min-width: 0; }
.site-main { min-height: 65vh; }
.section { padding-block: 72px; border-top: 1px solid rgba(41, 69, 58, .72); }
.compact-section { padding-block: 42px; }
.alt-section { background: var(--bg-alt); }
.section-heading { max-width: 780px; margin-bottom: 30px; }
.section-heading > p:last-child { color: var(--muted); }
.eyebrow { margin-bottom: 12px; color: var(--lime); font-size: .82rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.center-link { margin-top: 30px; text-align: center; }

.site-header { position: sticky; top: 0; z-index: 100; height: 66px; border-bottom: 1px solid var(--border); background: rgba(7, 17, 14, .96); backdrop-filter: blur(14px); }
.header-inner { display: flex; align-items: center; justify-content: space-between; width: min(calc(100% - 40px), var(--container)); height: 100%; margin-inline: auto; }
.site-logo { color: var(--text); font-family: ui-sans-serif, system-ui, sans-serif; font-size: 1.62rem; font-weight: 850; letter-spacing: -.06em; text-decoration: none; }
.site-logo span { color: var(--lime); }
.custom-logo-link { display: inline-flex; align-items: center; flex: 0 0 auto; line-height: 0; }
.custom-logo { width: auto; height: 32px; max-width: 118px; object-fit: contain; }
.primary-menu, .footer-menu { display: flex; align-items: center; gap: 5px; margin: 0; padding: 0; list-style: none; }
.primary-menu a { display: grid; min-height: 44px; padding: 8px 13px; place-items: center; border-radius: 9px; color: var(--text); font-size: .93rem; font-weight: 600; text-decoration: none; }
.primary-menu a:hover, .primary-menu .current-menu-item > a { background: var(--card); color: var(--lime); }
.primary-menu a[href$="/register/"] { background: var(--lime); color: var(--bg); }
.primary-menu a[href$="/register/"]:hover { background: var(--focus); color: var(--bg); }
.menu-toggle { display: none; width: 48px; height: 48px; padding: 0; border: 1px solid var(--border); border-radius: 10px; background: var(--card); color: var(--text); cursor: pointer; }
.menu-toggle-icon, .menu-toggle-icon::before, .menu-toggle-icon::after { display: block; width: 22px; height: 2px; margin-inline: auto; background: currentColor; content: ""; transition: transform .2s ease; }
.menu-toggle-icon::before { transform: translateY(-7px); }
.menu-toggle-icon::after { transform: translateY(5px); }
.menu-toggle[aria-expanded="true"] .menu-toggle-icon { background: transparent; }
.menu-toggle[aria-expanded="true"] .menu-toggle-icon::before { transform: translateY(0) rotate(45deg); background: var(--text); }
.menu-toggle[aria-expanded="true"] .menu-toggle-icon::after { transform: translateY(-2px) rotate(-45deg); background: var(--text); }

.hero-section, .page-hero { position: relative; overflow: hidden; padding-block: clamp(58px, 8vw, 108px); background: radial-gradient(circle at 82% 40%, rgba(61, 214, 198, .12), transparent 32%), linear-gradient(180deg, #07110e 0%, #0a1713 100%); }
.hero-section::before, .page-hero::before { position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(rgba(184,243,74,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(184,243,74,.025) 1px, transparent 1px); background-size: 42px 42px; content: ""; mask-image: linear-gradient(to bottom, #000, transparent); }
.hero-grid { position: relative; display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); align-items: center; gap: clamp(30px, 5vw, 70px); }
.hero-copy { min-width: 0; }
.hero-lead { max-width: 720px; color: #d6e2db; font-size: clamp(1.05rem, 1.6vw, 1.22rem); }
.hero-visual { min-width: 0; }
.site-illustration { width: 100%; border: 1px solid var(--border); border-radius: calc(var(--radius) + 4px); box-shadow: var(--shadow); object-fit: cover; }
.hero-image { aspect-ratio: 16 / 9; }
.simple-hero .text-column { position: relative; margin-inline: max(20px, calc((100vw - min(100vw - 40px, var(--container))) / 2)); }
.simple-hero h1 { max-width: 21ch; }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.button-row.centered { justify-content: center; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 11px 20px; border: 1px solid var(--lime); border-radius: 10px; font-weight: 750; line-height: 1.25; text-decoration: none; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { background: var(--lime); color: var(--bg); }
.button.primary:hover { background: var(--focus); color: var(--bg); }
.button.secondary { border-color: var(--cyan); background: transparent; color: var(--text); }
.button.secondary:hover { background: rgba(61, 214, 198, .1); color: var(--text); }
.text-link { display: inline-flex; min-height: 44px; align-items: center; font-weight: 700; }

.snapshot-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 10px; }
.snapshot-grid > div { min-width: 0; padding: 18px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); }
.snapshot-grid span, .snapshot-grid strong { display: block; }
.snapshot-grid span { color: var(--muted); font-size: .82rem; }
.snapshot-grid strong { margin-top: 5px; font-size: .98rem; line-height: 1.4; }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.task-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.four-col { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.task-card, .info-card { display: block; min-width: 0; padding: 24px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); color: var(--text); text-decoration: none; box-shadow: var(--shadow); transition: transform .2s ease, border-color .2s ease, background .2s ease; }
a.task-card:hover, a.info-card:hover { transform: translateY(-2px); border-color: var(--lime); background: var(--card-hover); color: var(--text); }
.task-card p, .info-card p { margin-bottom: 0; color: var(--muted); font-size: .94rem; }
.line-icon { display: grid; width: 42px; height: 42px; margin-bottom: 20px; place-items: center; border: 1px solid var(--border); border-radius: 11px; background: var(--bg); color: var(--lime); font: 700 1.35rem/1 system-ui, sans-serif; }
.split-section { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: center; gap: clamp(34px, 6vw, 80px); }
.visual-first > :first-child { order: 0; }
.matrix-list, .status-list { display: grid; gap: 10px; }
.matrix-list > div, .status-list > div { display: grid; grid-template-columns: minmax(130px, .45fr) minmax(0, 1fr); gap: 15px; padding: 14px 16px; border-left: 3px solid var(--lime); border-radius: 0 10px 10px 0; background: var(--card); }
.matrix-list span, .status-list span { color: var(--muted); }
.step-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-block: 28px; }
.step-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.step-card { min-width: 0; padding: 23px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); }
.step-card > span { display: grid; width: 38px; height: 38px; margin-bottom: 16px; place-items: center; border-radius: 50%; background: var(--lime); color: var(--bg); font-weight: 800; }
.step-card p { margin-bottom: 0; color: var(--muted); }
.comparison-table { max-width: 100%; margin-block: 26px; overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; background: var(--card); }
th, td { padding: 15px 17px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th { color: var(--lime); font-size: .92rem; }
tbody tr:last-child td { border-bottom: 0; }
.number-list { margin: 24px 0; padding-left: 1.4em; }
.number-list li { margin-bottom: 10px; padding-left: 5px; }
.check-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-block: 25px; }
.check-grid > div { padding: 20px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); }
.check-grid p { margin: 5px 0 0; color: var(--muted); }
.status-panels { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-block: 26px; }
.status { padding: 20px; border: 1px solid var(--border); border-top-width: 4px; border-radius: var(--radius); background: var(--card); }
.status.check { border-top-color: var(--cyan); }
.status.retry { border-top-color: var(--warning); }
.status.safe { border-top-color: var(--lime); }
.status p { margin: 5px 0 0; color: var(--muted); }
.category-pills { display: flex; flex-wrap: wrap; gap: 10px; margin-block: 25px; }
.category-pills span, .category-pills a { min-height: 44px; padding: 8px 15px; border: 1px solid var(--border); border-radius: 99px; background: var(--card); color: var(--text); font-weight: 650; text-decoration: none; }
.category-pills a:hover { border-color: var(--lime); color: var(--lime); }
.faq-list { display: grid; gap: 12px; }
.faq-list details { border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); }
.faq-list summary { display: flex; min-height: 56px; padding: 14px 50px 14px 18px; align-items: center; position: relative; cursor: pointer; color: var(--text); font-weight: 750; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { position: absolute; right: 18px; color: var(--lime); font: 700 1.35rem/1 system-ui; content: "+"; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details > p { padding: 0 18px 18px; margin: 0; color: #d6e2db; }
.compact-faq { margin-top: 36px; }
.related-guides { display: flex; flex-wrap: wrap; gap: 10px; margin-block: 24px; }
.related-guides a { display: inline-flex; min-height: 44px; padding: 8px 14px; align-items: center; border: 1px solid var(--cyan); border-radius: 10px; color: var(--text); font-weight: 700; text-decoration: none; }
.related-guides a:hover { background: rgba(61,214,198,.1); color: var(--lime); }
.notice { margin-block: 25px; padding: 20px; border: 1px solid var(--border); border-left: 4px solid var(--warning); border-radius: var(--radius); background: var(--card); }
.notice.safety { border-left-color: var(--lime); }
.notice p { margin: 5px 0 0; color: var(--muted); }
.closing-section { text-align: center; background: radial-gradient(circle at center, rgba(184,243,74,.11), transparent 55%), var(--bg); }
.closing-section h2 { max-width: 860px; margin-inline: auto; }
.site-note { max-width: 760px; margin: 38px auto 0; color: var(--muted); font-size: .91rem; }
.site-note p { margin-bottom: 5px; }
.legal-content h2 { margin-top: 1.5em; font-size: 1.55rem; }

.site-footer { border-top: 1px solid var(--border); background: #050d0b; }
.footer-inner { display: grid; grid-template-columns: 1.1fr .9fr 1.25fr; gap: 50px; width: min(calc(100% - 40px), var(--container)); margin-inline: auto; padding-block: 58px 42px; }
.footer-brand p, .footer-notes { color: var(--muted); font-size: .92rem; }
.footer-brand .site-logo { display: inline-block; margin-bottom: 13px; }
.footer-brand .custom-logo-link { margin-bottom: 13px; }
.footer-brand .custom-logo { height: 42px; max-width: 132px; }
.footer-menu { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }
.footer-menu a { display: inline-flex; min-height: 44px; padding: 7px 9px; align-items: center; color: var(--text); font-weight: 650; text-decoration: none; }
.footer-menu a:hover { color: var(--lime); }
.footer-bottom { padding: 18px 20px; border-top: 1px solid var(--border); color: var(--muted); font-size: .85rem; text-align: center; }
.narrow-page, .archive-page { padding-block: 72px; }
.article-card { width: min(calc(100% - 40px), var(--reading)); margin-inline: auto; padding: 32px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); }
.archive-header { margin-bottom: 30px; }
.archive-page h1 { max-width: none; }
.error-page { min-height: 65vh; }

@media (max-width: 1023px) {
  .snapshot-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .task-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .four-col { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-copy { max-width: 820px; }
  .hero-visual { max-width: 820px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-notes { grid-column: 1 / -1; }
}

@media (max-width: 767px) {
  html { scroll-padding-top: 74px; }
  body { font-size: 16px; }
  .container, .text-column, .header-inner, .footer-inner, .article-card { width: min(calc(100% - 32px), var(--container)); }
  .site-header { height: 58px; }
  .menu-toggle { display: grid; place-items: center; }
  .primary-navigation { position: absolute; top: 58px; left: 0; width: 100%; padding: 8px 16px 18px; border-bottom: 1px solid var(--border); background: var(--bg); }
  .js .primary-navigation { display: none; }
  .js .primary-navigation.is-open { display: block; }
  .primary-menu { display: grid; gap: 4px; }
  .primary-menu a { justify-content: start; padding-inline: 14px; }
  .section { padding-block: 44px; }
  .compact-section { padding-block: 34px; }
  .hero-section, .page-hero { padding-block: 48px; }
  h1 { font-size: clamp(2.1rem, 11vw, 3.2rem); }
  h2 { font-size: clamp(1.65rem, 7.6vw, 2.3rem); }
  .button-row { display: grid; }
  .button { width: 100%; }
  .snapshot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .task-grid, .card-grid, .four-col, .split-section, .step-grid, .step-grid.four, .check-grid, .status-panels { grid-template-columns: 1fr; }
  .visual-first > :first-child { order: 1; }
  .matrix-list > div, .status-list > div { grid-template-columns: 1fr; gap: 4px; }
  .comparison-table table, .comparison-table thead, .comparison-table tbody, .comparison-table tr, .comparison-table th, .comparison-table td { display: block; }
  .comparison-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .comparison-table tr { padding: 10px 0; border-bottom: 1px solid var(--border); }
  .comparison-table tr:last-child { border-bottom: 0; }
  .comparison-table td { padding: 8px 14px; border: 0; }
  .comparison-table td:first-child { color: var(--lime); font-weight: 750; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-notes { grid-column: auto; }
  .footer-menu { grid-template-columns: 1fr; }
  .article-card { padding: 24px 20px; }
}

@media (max-width: 380px) {
  .snapshot-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}