.accordion-container {
  max-width: 700px;
  margin: 30px auto;
  font-family: sans-serif;
}

.accordion-button {
  background: #34495e;
  color: #fff;
  padding: 12px 16px;
  border: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
  font-size: 16px;
  outline: none;
  transition: background 0.3s;
  display: flex;
  align-items: center;
  gap: 8px;
}

.accordion-button:hover {
  background: #2c3e50;
}

.accordion-content {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.5s ease;
  background: #ecf0f1;
  padding: 0 16px;
  box-sizing: border-box;
}

.accordion-content.open {
  max-height: none;
  padding: 10px 16px;
}

.accordion-item {
  margin: 4px 0;
}

.accordion-item .accordion-item {
  margin-left: 20px;
}

.icon {
  font-weight: bold;
  display: inline-block;
  width: 16px;
}

@media screen and (max-width: 600px) {
  .accordion-container {
    padding: 0 10px;
  }

  .accordion-button {
    font-size: 14px;
    padding: 10px 12px;
  }

  .accordion-content {
    padding: 0 12px;
  }

  .accordion-content.open {
    padding: 8px 12px;
  }
}


/* ===== Readability Fix for verticalml accordions =====
   Global 'a { color:#fff !important }' makes links unreadable on light panels.
   Use higher specificity + !important to restore contrast in accordion content.
*/
.accordion-content{
  background: #ffffff;
  color: #1c2636;
}

.accordion-content p{ line-height: 1.7; }
.accordion-content strong{ color:#0e2747; }

/* Ensure links are visible on white */
.accordion-content a,
.accordion-content a:visited,
.accordion-content a:hover,
.accordion-content a:active{
  color: #0b66d0 !important;
  text-decoration: underline; /* recognizability */
}

/* Keep nested accordion headers dark for hierarchy clarity */
.accordion-content .accordion-button{
  background:#34495e;
  color:#fff;
}
.accordion-content .accordion-button:hover{
  background:#2c3e50;
}



/* === Apple adjustments v2 (hero image more visible + header contact white) === */
.hero{
  /* reduce white overlay opacity so hero image shows more */
  background:
    radial-gradient(120% 90% at 50% 0%, rgba(0,113,227,.10) 0%, rgba(0,0,0,0) 55%),
    linear-gradient(180deg, rgba(245,245,247,.58), rgba(245,245,247,.34)),
    url('https://www.nikko-kikai.co.jp/img/mecha_a.png') center/cover no-repeat !important;
}
.hero::after{
  /* keep contrast but lighten a bit */
  background: radial-gradient(120% 80% at 50% -10%, rgba(255,255,255,0) 0%, rgba(0,0,0,.05) 60%, rgba(0,0,0,.09) 100%) !important;
}

/* Header contact "お問い合わせ" force white (including hover/visited) */
.g-nav .nav-cta,
.g-nav .nav-cta:visited,
.g-nav .nav-cta:hover,
.g-nav a.nav-cta,
.g-nav a.nav-cta:visited,
.g-nav a.nav-cta:hover{
  color:#fff !important;
}



/* === Accordion: white-base Apple style === */
.accordion-container{
  max-width: 820px;
}

/* Header buttons */
.accordion-button{
  background: rgba(255,255,255,.92) !important;
  color: var(--apple-txt, #1d1d1f) !important;
  border: 1px solid rgba(0,0,0,.10) !important;
  border-radius: 14px !important;
  box-shadow: 0 6px 18px rgba(0,0,0,.08) !important;
  padding: 12px 16px !important;
}

.accordion-button:hover{
  background: rgba(0,0,0,.03) !important;
}

.accordion-button .icon{
  color: rgba(0,0,0,.55) !important;
}

/* Content panel already white; ensure border + spacing */
.accordion-content{
  background: rgba(255,255,255,.96) !important;
  border: 1px solid rgba(0,0,0,.08) !important;
  border-radius: 14px !important;
  margin-top: 8px;
}

/* Nested accordion: slightly tinted for hierarchy */
.accordion-content .accordion-button{
  background: rgba(255,255,255,.80) !important;
  border-color: rgba(0,0,0,.08) !important;
  box-shadow: 0 4px 14px rgba(0,0,0,.06) !important;
}

.accordion-content .accordion-button:hover{
  background: rgba(0,0,0,.035) !important;
}

.accordion-content p strong{ color: var(--apple-txt, #1d1d1f) !important; }