/* bd-10.cfd mobile-first visual frame */
:root {
  --shellde15a-ink: #063d25;
  --shellde15a-ink-deep: #022718;
  --shellde15a-panel: #0b5130;
  --shellde15a-panel-soft: #0d6038;
  --shellde15a-lime: #adff2f;
  --shellde15a-lime-soft: #d5ff8b;
  --shellde15a-paper: #f3f8e7;
  --shellde15a-muted: #b7d3b0;
  --shellde15a-line: rgba(173, 255, 47, .4);
  --shellde15a-shadow: 0 18px 50px rgba(0, 22, 12, .3);
  --shellde15a-radius: 12px;
  --shellde15a-wide: 960px;
}

* { box-sizing: border-box; }
html { min-width: 320px; scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background: var(--shellde15a-ink-deep);
  color: var(--shellde15a-paper);
  font-family: "Noto Sans Bengali", "Trebuchet MS", sans-serif;
  line-height: 1.72;
  padding-bottom: 86px;
}
button, a { -webkit-tap-highlight-color: transparent; }
a {
  color: var(--shellde15a-lime-soft);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover { color: #fff; }
button { font: inherit; }
:focus-visible {
  outline: 3px solid var(--shellde15a-lime);
  outline-offset: 3px;
}

.shellde15a-skip {
  position: fixed;
  top: -80px;
  left: 12px;
  z-index: 100;
  padding: 8px 14px;
  color: var(--shellde15a-ink-deep);
  background: var(--shellde15a-lime);
  font-weight: 800;
}
.shellde15a-skip:focus { top: 10px; }
.shellde15a-shell {
  width: min(100%, var(--shellde15a-wide));
  margin: 0 auto;
  background:
    radial-gradient(circle at 92% 4%, rgba(173, 255, 47, .1), transparent 25rem),
    linear-gradient(145deg, #073d25 0%, #042d1c 48%, #021f14 100%);
  min-height: 100vh;
}

/* The header is an action rail rather than a large desktop masthead. */
.shellde15a-topbar {
  position: fixed;
  z-index: 40;
  top: 0;
  left: 50%;
  width: min(100%, var(--shellde15a-wide));
  min-height: 66px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--shellde15a-line);
  background: rgba(2, 39, 24, .96);
  box-shadow: 0 8px 24px rgba(0, 0, 0, .2);
  backdrop-filter: blur(12px);
}
.shellde15a-brand {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 9px;
  margin-right: auto;
}
.shellde15a-logo {
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  border: 1px solid var(--shellde15a-lime);
  border-radius: 10px;
  object-fit: cover;
}
.shellde15a-brand-name {
  overflow: hidden;
  color: #fff;
  font-family: "Trebuchet MS", "Noto Sans Bengali", sans-serif;
  font-size: 1.13rem;
  font-weight: 900;
  letter-spacing: .01em;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.shellde15a-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}
.shellde15a-btn,
.shellde15a-menubtn {
  min-height: 44px;
  border: 1px solid var(--shellde15a-lime);
  border-radius: 8px;
  cursor: pointer;
  transition: background-color .2s ease, color .2s ease, transform .2s ease;
}
.shellde15a-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 11px;
  color: var(--shellde15a-ink-deep);
  background: var(--shellde15a-lime);
  font-size: .82rem;
  font-weight: 900;
  line-height: 1.1;
  white-space: nowrap;
}
.shellde15a-btn svg { width: 17px; height: 17px; }
.shellde15a-btn:hover,
.shellde15a-btn:active { background: #fff; transform: translateY(-1px); }
.shellde15a-btn-login { color: var(--shellde15a-lime-soft); background: transparent; }
.shellde15a-btn-login:hover,
.shellde15a-btn-login:active { color: var(--shellde15a-ink-deep); background: var(--shellde15a-lime); }
.shellde15a-menubtn {
  width: 44px;
  padding: 8px;
  color: var(--shellde15a-lime);
  background: var(--shellde15a-panel);
}
.shellde15a-menubtn svg { width: 25px; height: 25px; display: block; }
.shellde15a-menubtn:hover { color: var(--shellde15a-ink-deep); background: var(--shellde15a-lime); }

.shellde15a-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 10px;
  left: 10px;
  display: none;
  max-height: calc(100vh - 90px);
  overflow-y: auto;
  padding: 14px;
  border: 1px solid var(--shellde15a-line);
  border-radius: var(--shellde15a-radius);
  background: #063820;
  box-shadow: var(--shellde15a-shadow);
}
.shellde15a-menu[data-open="1"] { display: block; animation: shellde15a-menu-in .18s ease-out both; }
.shellde15a-menu-partition {
  padding: 10px 4px 12px;
  border-bottom: 1px solid rgba(183, 211, 176, .2);
}
.shellde15a-menu-partition:last-of-type { border-bottom: 0; }
.shellde15a-menu-partition-title {
  margin: 0 0 5px;
  color: var(--shellde15a-lime);
  font-size: .72rem;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.shellde15a-menu-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.shellde15a-menu-link {
  display: block;
  min-height: 42px;
  padding: 7px 8px;
  border-left: 2px solid transparent;
  color: var(--shellde15a-paper);
  font-size: .88rem;
  text-decoration: none;
}
.shellde15a-menu-link:hover { border-left-color: var(--shellde15a-lime); color: var(--shellde15a-lime); background: rgba(173, 255, 47, .08); }
.shellde15a-menu-cta { display: flex; gap: 7px; padding-top: 13px; }
.shellde15a-menu-cta .shellde15a-btn { flex: 1; }

main { padding-top: 78px; }
.shellde15a-main-inner { width: min(100% - 24px, 900px); margin: 0 auto; }
.shellde15a-hero {
  position: relative;
  padding: 30px 16px 22px;
  border-bottom: 1px solid var(--shellde15a-line);
  background: linear-gradient(115deg, rgba(8, 94, 54, .86), rgba(2, 39, 24, .14));
}
.shellde15a-hero::before {
  content: "";
  position: absolute;
  top: 17px;
  left: 16px;
  width: 46px;
  height: 4px;
  background: var(--shellde15a-lime);
  box-shadow: 13px 7px 0 rgba(173, 255, 47, .33), 26px 14px 0 rgba(173, 255, 47, .14);
}
.shellde15a-kicker {
  margin: 5px 0 7px;
  color: var(--shellde15a-lime);
  font-size: .75rem;
  font-weight: 900;
  letter-spacing: .13em;
  text-transform: uppercase;
}
h1, h2, h3 { font-family: "Trebuchet MS", "Noto Sans Bengali", sans-serif; line-height: 1.25; }
h1 {
  max-width: 850px;
  margin: 15px 0 12px;
  color: #fff;
  font-size: clamp(1.7rem, 7vw, 2.65rem);
  letter-spacing: -.025em;
}
h2 {
  margin: 0 0 12px;
  color: #fff;
  font-size: clamp(1.22rem, 4.7vw, 1.7rem);
}
h3 { margin: 0 0 7px; color: var(--shellde15a-lime-soft); font-size: 1.05rem; }
p { margin: 0 0 14px; }
.shellde15a-hero-lead { max-width: 780px; margin-bottom: 18px; color: var(--shellde15a-paper); font-size: .98rem; }
.shellde15a-hero-cta,
.shellde15a-cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.shellde15a-inline-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  gap: 7px;
  padding: 8px 13px;
  border: 1px solid var(--shellde15a-line);
  border-radius: 8px;
  color: var(--shellde15a-lime-soft);
  background: rgba(3, 42, 25, .7);
  font-size: .88rem;
  font-weight: 800;
  text-decoration: none;
  transition: border-color .2s ease, background-color .2s ease, transform .2s ease;
}
.shellde15a-inline-cta svg { width: 18px; height: 18px; flex: 0 0 18px; }
.shellde15a-inline-cta:hover { border-color: var(--shellde15a-lime); color: #fff; background: rgba(173, 255, 47, .14); transform: translateY(-1px); }
.shellde15a-quiet-link { color: var(--shellde15a-lime-soft); font-weight: 800; }

/* The carousel uses local campaign images and never becomes wider than the phone canvas. */
.shellde15a-carousel {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-bottom: 1px solid var(--shellde15a-line);
  background: #021c12;
}
.shellde15a-track { display: flex; width: 100%; transition: transform .5s cubic-bezier(.2, .7, .2, 1); }
.shellde15a-slide { position: relative; flex: 0 0 100%; min-width: 0; color: #fff; text-decoration: none; }
.shellde15a-slide img { display: block; width: 100%; height: clamp(150px, 48vw, 340px); object-fit: cover; opacity: .82; }
.shellde15a-slide::after { content: ""; position: absolute; inset: 35% 0 0; background: linear-gradient(transparent, rgba(0, 27, 15, .92)); pointer-events: none; }
.shellde15a-slide-cap { position: absolute; z-index: 1; right: 14px; bottom: 14px; left: 14px; display: block; font-size: .85rem; line-height: 1.45; }
.shellde15a-slide-cap span { color: var(--shellde15a-lime); font-weight: 900; }
.shellde15a-dots { position: absolute; z-index: 2; top: 10px; right: 12px; display: flex; gap: 6px; }
.shellde15a-dot { width: 12px; height: 12px; padding: 0; border: 1px solid #fff; border-radius: 50%; background: transparent; cursor: pointer; }
.shellde15a-dot[data-on="1"] { background: var(--shellde15a-lime); box-shadow: 0 0 0 2px rgba(173, 255, 47, .25); }

.shellde15a-section,
.shellde15a-panel,
.shellde15a-about-block,
.shellde15a-guide-block {
  width: min(100% - 24px, 900px);
  margin: 16px auto;
  padding: 20px 15px;
  border: 1px solid rgba(173, 255, 47, .22);
  border-radius: var(--shellde15a-radius);
  background: rgba(8, 81, 47, .68);
  box-shadow: 0 9px 28px rgba(0, 20, 11, .14);
}
.shellde15a-section-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.shellde15a-section-count {
  flex: 0 0 auto;
  padding: 3px 8px;
  border: 1px solid var(--shellde15a-line);
  border-radius: 999px;
  color: var(--shellde15a-lime);
  font-size: .72rem;
  font-weight: 900;
  white-space: nowrap;
}
.shellde15a-section-intro { color: var(--shellde15a-muted); font-size: .9rem; }
.shellde15a-section:nth-of-type(odd) { border-left: 3px solid var(--shellde15a-lime); }

.shellde15a-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 7px;
}
.shellde15a-tile {
  min-width: 0;
  min-height: 118px;
  padding: 7px 4px 8px;
  border: 1px solid rgba(173, 255, 47, .3);
  border-radius: 8px;
  color: var(--shellde15a-paper);
  background: rgba(2, 39, 24, .65);
  cursor: pointer;
  text-align: center;
  transition: border-color .2s ease, background-color .2s ease, transform .2s ease;
}
.shellde15a-tile:hover,
.shellde15a-tile:active { border-color: var(--shellde15a-lime); background: rgba(173, 255, 47, .12); transform: translateY(-2px); }
.shellde15a-tile img { display: block; width: min(100%, 76px); aspect-ratio: 1; margin: 0 auto 6px; border-radius: 7px; object-fit: cover; }
.shellde15a-tile-name { display: block; overflow-wrap: anywhere; font-size: .7rem; font-weight: 800; line-height: 1.32; }
.shellde15a-related { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 13px; margin-top: 15px; font-size: .84rem; }
.shellde15a-related-label { color: var(--shellde15a-muted); font-weight: 800; }

.shellde15a-modules { padding: 1px 0 2px; }
.shellde15a-panel > p:last-child { margin-bottom: 0; }
.shellde15a-panel h2,
.shellde15a-about-block h2,
.shellde15a-guide-block h2 { padding-bottom: 10px; border-bottom: 1px solid rgba(173, 255, 47, .23); }
.shellde15a-featrow {
  display: grid;
  grid-template-columns: minmax(88px, .42fr) 1fr;
  gap: 10px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(183, 211, 176, .14);
}
.shellde15a-featrow:last-child { border-bottom: 0; }
.shellde15a-featrow dt { color: var(--shellde15a-lime); font-weight: 900; }
.shellde15a-featrow dd { margin: 0; color: var(--shellde15a-muted); font-size: .9rem; }
.shellde15a-check,
.shellde15a-steps { margin: 0; padding-left: 21px; }
.shellde15a-check li,
.shellde15a-steps li { margin: 0 0 10px; padding-left: 3px; color: var(--shellde15a-paper); }
.shellde15a-check li::marker { color: var(--shellde15a-lime); }
.shellde15a-steps li::marker { color: var(--shellde15a-lime); font-weight: 900; }
.shellde15a-subq { margin-top: 14px; padding: 13px; border-left: 3px solid var(--shellde15a-lime); background: rgba(2, 39, 24, .48); }
.shellde15a-subq strong { display: block; margin-bottom: 5px; color: var(--shellde15a-lime-soft); }
.shellde15a-subq p { margin-bottom: 0; color: var(--shellde15a-muted); font-size: .9rem; }
.shellde15a-branch { margin: 14px 0; padding: 14px; border: 1px dashed rgba(173, 255, 47, .42); border-radius: 8px; background: rgba(2, 39, 24, .42); }
.shellde15a-branch-title { margin-bottom: 6px; color: var(--shellde15a-lime); font-weight: 900; }
.shellde15a-branch p:last-child { margin-bottom: 0; }

/* About page has a route-map rhythm, while the guide uses numbered lanes. */
.shellde15a-answer {
  width: min(100% - 24px, 900px);
  margin: 16px auto;
  padding: 16px;
  border: 1px solid var(--shellde15a-lime);
  border-radius: 4px 15px 4px 15px;
  color: var(--shellde15a-ink-deep);
  background: var(--shellde15a-lime);
}
.shellde15a-answer strong { display: block; margin-bottom: 5px; font-size: 1.05rem; }
.shellde15a-answer p { margin: 0; font-size: .92rem; }
.shellde15a-route {
  display: grid;
  gap: 10px;
  margin: 15px 0 0;
}
.shellde15a-route-item {
  position: relative;
  padding: 14px 14px 14px 48px;
  border-left: 2px solid var(--shellde15a-lime);
  background: rgba(2, 39, 24, .43);
}
.shellde15a-route-item::before {
  content: attr(data-step);
  position: absolute;
  top: 13px;
  left: 12px;
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 50%;
  color: var(--shellde15a-ink-deep);
  background: var(--shellde15a-lime);
  font-size: .75rem;
  font-weight: 900;
}
.shellde15a-route-item p { margin-bottom: 0; color: var(--shellde15a-muted); font-size: .9rem; }
.shellde15a-split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 14px 0;
}
.shellde15a-note {
  min-width: 0;
  padding: 13px;
  border-top: 3px solid var(--shellde15a-lime);
  background: rgba(2, 39, 24, .5);
}
.shellde15a-note h3 { font-size: .98rem; }
.shellde15a-note p { margin: 0; color: var(--shellde15a-muted); font-size: .86rem; }
.shellde15a-callout { margin: 14px 0; padding: 13px 14px; border: 1px solid rgba(173, 255, 47, .36); background: rgba(173, 255, 47, .08); }
.shellde15a-callout p:last-child { margin-bottom: 0; }
.shellde15a-mini-table { width: 100%; border-collapse: collapse; font-size: .86rem; }
.shellde15a-mini-table th,
.shellde15a-mini-table td { padding: 9px 7px; border-bottom: 1px solid rgba(183, 211, 176, .18); text-align: left; vertical-align: top; }
.shellde15a-mini-table th { color: var(--shellde15a-lime); font-weight: 900; }
.shellde15a-mini-table td { color: var(--shellde15a-muted); }
.shellde15a-promo-strip { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 15px; }
.shellde15a-promo-chip {
  min-height: 44px;
  padding: 8px 11px;
  border: 1px solid rgba(173, 255, 47, .52);
  border-radius: 999px;
  color: var(--shellde15a-lime-soft);
  background: transparent;
  cursor: pointer;
  font-size: .82rem;
  font-weight: 800;
}
.shellde15a-promo-chip:hover { color: var(--shellde15a-ink-deep); background: var(--shellde15a-lime); }

.shellde15a-extfoot {
  width: min(100% - 24px, 900px);
  margin: 25px auto 16px;
  padding: 20px 15px;
  border-top: 3px solid var(--shellde15a-lime);
  background: #063820;
}
.shellde15a-extfoot-title { margin: 0 0 12px; color: #fff; font-size: 1.25rem; }
.shellde15a-directory-group { margin: 0 0 16px; padding-bottom: 11px; border-bottom: 1px solid rgba(183, 211, 176, .16); }
.shellde15a-directory-group h3 { margin-bottom: 6px; font-size: .9rem; }
.shellde15a-directory { display: flex; flex-wrap: wrap; gap: 4px 15px; margin: 0; padding-left: 18px; font-size: .84rem; }
.shellde15a-brandnote,
.shellde15a-disclaimer { color: var(--shellde15a-muted); font-size: .86rem; }
.shellde15a-promorow { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 18px; }
.shellde15a-promorow .shellde15a-inline-cta { flex: 1 1 135px; }
.shellde15a-disclaimer { margin: 0; padding-top: 14px; border-top: 1px solid rgba(183, 211, 176, .18); }
.shellde15a-copyright { width: min(100% - 24px, 900px); margin: 0 auto; padding: 15px 0 8px; color: var(--shellde15a-muted); font-size: .76rem; text-align: center; }
.shellde15a-copyright p { margin: 2px 0; }

.shellde15a-bottomnav {
  position: fixed;
  z-index: 50;
  right: 0;
  bottom: 0;
  left: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  min-height: 70px;
  padding: 5px max(7px, env(safe-area-inset-left)) max(5px, env(safe-area-inset-bottom));
  border-top: 1px solid var(--shellde15a-line);
  background: rgba(2, 31, 20, .97);
  box-shadow: 0 -8px 25px rgba(0, 0, 0, .24);
  backdrop-filter: blur(12px);
}
.shellde15a-bottomnav a {
  min-width: 0;
  min-height: 58px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 4px 2px;
  border-radius: 8px;
  color: var(--shellde15a-muted);
  font-size: .68rem;
  font-weight: 800;
  line-height: 1.15;
  text-align: center;
  text-decoration: none;
  transition: background-color .2s ease, color .2s ease;
}
.shellde15a-navicon {
  display: grid;
  width: 29px;
  height: 27px;
  place-items: center;
  border: 1px solid rgba(173, 255, 47, .3);
  border-radius: 7px;
  color: var(--shellde15a-lime-soft);
}
.shellde15a-navicon svg { width: 17px; height: 17px; }
.shellde15a-bottomnav a:hover,
.shellde15a-bottomnav a.shellde15a-on { color: var(--shellde15a-ink-deep); background: var(--shellde15a-lime); }
.shellde15a-bottomnav a.shellde15a-on .shellde15a-navicon,
.shellde15a-bottomnav a:hover .shellde15a-navicon { border-color: var(--shellde15a-ink-deep); color: var(--shellde15a-ink-deep); }

@keyframes shellde15a-menu-in { from { opacity: 0; transform: translateY(-5px); } to { opacity: 1; transform: translateY(0); } }
@media (min-width: 600px) {
  body { padding-bottom: 92px; }
  .shellde15a-topbar { padding-right: 18px; padding-left: 18px; }
  .shellde15a-menu { right: 18px; left: auto; width: min(520px, calc(100% - 36px)); }
  .shellde15a-hero { padding: 42px 30px 30px; }
  .shellde15a-hero::before { left: 30px; }
  .shellde15a-section,
  .shellde15a-panel,
  .shellde15a-about-block,
  .shellde15a-guide-block,
  .shellde15a-answer,
  .shellde15a-extfoot { padding-right: 24px; padding-left: 24px; }
  .shellde15a-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 9px; }
  .shellde15a-tile { min-height: 132px; }
  .shellde15a-tile-name { font-size: .74rem; }
}
@media (max-width: 360px) {
  .shellde15a-btn { padding-right: 8px; padding-left: 8px; font-size: .76rem; }
  .shellde15a-btn svg { display: none; }
  .shellde15a-brand-name { font-size: 1rem; }
  .shellde15a-section-head { display: block; }
  .shellde15a-section-count { display: inline-block; margin-top: 2px; }
  .shellde15a-split { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}