html, body {
  overflow-x: hidden;  /* horizontal scroll বন্ধ */
  overflow-y: auto;    /* vertical scroll সবসময় চালু */
  height: auto;        /* height fix না, auto */
}


/* ===== Fixed header + hero space ===== */
:root { --step4-top-offset: 140px; }   /* desktop */
@media (max-width: 768px){
  :root { --step4-top-offset: 160px; }  /* mobile */
}

/* ===== Page background + base font ===== */
.step4-page {
  font-family: 'Poppins', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background-color: #ffffff; /* teal */
  color: #FFA500; /* brand orange */
}

/* ===== HERO ===== */
/* ===== HERO ===== */
.step4-page .hero {
  margin-top: 10px !important;   /* সব ডিভাইসে */
  display: flex;
  justify-content: center;
  margin-bottom: 5px;
  background: transparent;
}

.step4-page .hero img {
  max-width: calc(100% - 120px);   /* 60px left + 60px right */
  height: auto;
  object-fit: contain;             /* no crop */
  display: block;
  border-radius: 0;
  background: transparent;
}
@media (max-width: 992px) {
  .step4-page .hero img { max-width: calc(100% - 60px); }
}
@media (max-width: 600px) {
  .step4-page .hero img { max-width: 100%; }
}

/* ===== Main container & teal section ===== */
.step4-page .main-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 16px 44px;
}
.step4-page .main-section {
  background: #ffffff;
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 14px 50px rgba(255, 165, 0, 0.9);
}

/* Headings & text */
.step4-page .section-title {
  font-size: 26px;
  font-weight: 700;
  text-align: center;
  color: #FFA500;
  margin: 6px 0 20px 0;
}
.step4-page .section-text {
  font-size: 16px;
  line-height: 1.7;
  color: #FFA500;
  margin: 0 0 14px 0;
}

/* ===== Tray menu (width fix) ===== */
.tray-menu {
  position: fixed;
  top: 20%;
  left: -220px;          /* hidden offset */
  width: 200px;          /* ✅ fixed width */
  background: #ffa500;
  border-radius: 0 14px 14px 0;
  box-shadow: 0 12px 30px rgba(0,0,0,.15);
  z-index: 1200;
  transition: left .3s ease;
  overflow: hidden;
}
.tray-menu.open { left: 0; }
.tray-menu a {
  display: block;
  padding: 12px 14px;
  color: #ffffff;
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid #f1f1f1;
  font-size: 15px;
}
.tray-menu a:hover { background: rgba(255,165,0,0.12); }

/* ===== Tray button (same across pages) ===== */
.tray-toggle-vertical {
  position: fixed;
  left: 0;
  top: 40%;
  transform: translateY(-50%) rotate(180deg);
  background: #ffffff;
  color: #FFA500;
  padding: 18px 12px;
  min-height: 140px;
  border-radius: 12px 0 0 12px;
  font-weight: 700;
  letter-spacing: .3px;
  font-size: 16px;
  cursor: pointer;
  z-index: 1100;
  display: flex;
  align-items: center;
  justify-content: center;

  writing-mode: vertical-rl;
  text-orientation: mixed;
  white-space: nowrap;
  line-height: 1;
  user-select: none;
  border: 3px solid #FFA500;

  box-shadow: 0 0 22px 8px rgba(255,165,0,0.45);
  transition: transform .25s ease, box-shadow .25s ease, filter .25s ease, opacity .25s ease;
}
.tray-toggle-vertical:hover,
.tray-toggle-vertical:focus-visible {
  transform: translateY(-50%) rotate(180deg) translateX(2px) scale(1.03);
  box-shadow: 0 0 36px 14px rgba(255,165,0,0.65);
  filter: brightness(1.03);
  outline: none;
}

@media (max-width: 600px){
  .step4-page .hero img { max-width: 100%; }
  .tray-toggle-vertical { padding: 20px 14px; font-size: 14px; }
}
@media only screen and (max-width: 768px) {
  #trayMenu,
  #trayButton,
  .tray-menu,
  .tray-toggle-vertical {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
  }
}