/* ============== FAQ page ============== */

/* Header is fixed; main content must clear topbar (40px) + header (76px) */
.faq-main {
  padding-top: var(--header-h);
  background: #f5f5f5;
}

/* ============== Section ============== */

.faq {
  padding: clamp(56px, 8vw, 112px) 0 clamp(72px, 10vw, 144px);
  background: #f5f5f5;
}

/* ============== Title ============== */

.faq__title {
  text-align: center;
  font-size: clamp(2rem, 4.2vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.005em;
  line-height: 1.1;
  color: var(--color-dark);
  margin: 0 auto clamp(40px, 5vw, 72px);
  max-width: 720px;
}

/* ============== List ============== */

.faq__list {
  max-width: 880px;
  margin-inline: auto;
}

.faq__item {
  border-top: 1px solid #d8d8d8;
}
.faq__item:last-child {
  border-bottom: 1px solid #d8d8d8;
}

.faq__item summary {
  list-style: none;
  cursor: pointer;
  padding: clamp(20px, 2.4vw, 28px) 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-24);
  outline: none;
}
.faq__item summary::-webkit-details-marker {
  display: none;
}
.faq__item summary::marker {
  display: none;
}

.faq__q {
  font-size: clamp(15px, 1.35vw, 21px);
  font-weight: bold;
  /* font-variant: small-caps; */
  letter-spacing: 0.04em;
  color: var(--color-dark);
  line-height: 1.3;
}

.faq__toggle {
  flex-shrink: 0;
  position: relative;
  width: 16px;
  height: 16px;
  display: inline-block;
}
.faq__toggle::before,
.faq__toggle::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--color-dark);
  transition: transform 0.35s var(--ease), opacity 0.35s var(--ease);
}
.faq__toggle::before {
  width: 16px;
  height: 1.6px;
  transform: translate(-50%, -50%);
}
.faq__toggle::after {
  width: 1.6px;
  height: 16px;
  transform: translate(-50%, -50%);
}
.faq__item[open] .faq__toggle::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.faq__a {
  padding: 0 4px clamp(20px, 2.4vw, 28px);
  font-size: clamp(13px, 1.05vw, 16px);
  font-variant: small-caps;
  letter-spacing: 0.04em;
  line-height: 1.85;
  color: var(--color-dark);
  max-width: 760px;
}

/* Smooth slide-in on open. Native <details> closes instantly. */
.faq__item[open] > .faq__a {
  animation: faq-slide-in 0.35s var(--ease) both;
  transform-origin: top center;
}

@keyframes faq-slide-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Subtle row press feedback */
.faq__item summary {
  transition: background-color 0.25s var(--ease);
}
.faq__item summary:hover {
  background-color: rgba(0, 0, 0, 0.025);
}

@media (prefers-reduced-motion: reduce) {
  .faq__toggle::before,
  .faq__toggle::after {
    transition: none;
  }
  .faq__item[open] > .faq__a {
    animation: none;
  }
  .faq__item summary {
    transition: none;
  }
}

/* ============== Responsive ============== */

@media (max-width: 767px) {
  .faq {
    padding: clamp(40px, 8vw, 64px) 0 clamp(56px, 10vw, 80px);
  }
  .faq__title {
    margin-bottom: clamp(28px, 6vw, 48px);
  }
  .faq__item summary {
    gap: var(--sp-16);
  }
  .faq__toggle {
    font-size: 20px;
  }
}

@media (max-width: 479px) {
  .faq__q {
    font-size: 14px;
  }
  .faq__a {
    font-size: 13px;
  }
}