/* ===== Reset & Base ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 62.5%; /* 1rem = 10px */
}

body {
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  background-color: #f5f5f5;
  color: #333;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

img {
  display: block;
  width: 100%;
  height: auto;
}

a {
  text-decoration: none;
  color: inherit;
}

/* ===== LP Wrapper ===== */
.lp-wrapper {
  max-width: 750px;
  margin: 0 auto;
  background-color: #fff;
  overflow: hidden;
}

/* ===== 画像セクション共通 ===== */
.section img {
  display: block;
  width: 100%;
  height: auto;
}

/* 画像間の隙間を消す */
.section {
  line-height: 0;
  font-size: 0;
}

/* ===== CTA セクション ===== */
.cta-section {
  position: relative;
}

.cta-image-wrapper {
  position: relative;
}

.cta-bg {
  display: block;
  width: 100%;
  height: auto;
}

/* オーバーレイ：a_03にボタンを重ねる */
.cta-overlay {
  position: absolute;
  top: 60%;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: center;
  padding: 0 3%;
  z-index: 10;
}

/* btn.png: 画像の上に重ねて配置 */
.cta-btn-link {
  display: block;
  width: 94%;
  max-width: 700px;
  transition: transform 0.3s ease, filter 0.3s ease;
}

.cta-btn-link:hover {
  transform: scale(1.05);
}

.cta-btn {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.15));
  transition: filter 0.3s ease;
}

.cta-btn-link:hover .cta-btn {
  filter: drop-shadow(0 8px 20px rgba(0, 0, 0, 0.3));
}

/* ===== Q&A セクション ===== */
.qa-section {
  background-color: #fff;
  padding: 5rem 3rem 4rem;
  line-height: 1.6;
  font-size: 1.4rem;
}

.qa-header {
  text-align: center;
  margin-bottom: 3rem;
}

.qa-title {
  font-family: "Quicksand", sans-serif;
  font-size: 7rem;
  font-weight: 600;
  font-style: normal;
  color: #e85030;
  letter-spacing: 0.05em;
  padding-bottom: 1rem;
  border-bottom: 2px solid #e85030;
  display: inline-block;
}

.qa-subtitle {
  font-size: 2.2rem;
  font-weight: 600;
  color: #666;
  margin-top: 1rem;
  display: block;
  letter-spacing: 0.15em;
}

.qa-list {
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
}

/* アコーディオンカード */
.qa-item {
  border: 1px solid #ddd;
  border-radius: 1rem;
  overflow: hidden;
  background-color: #fff;
}

.qa-item[open] {
  background-color: #fff;
}

/* 質問（summary） */
.qa-question {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1.8rem 2rem;
  cursor: pointer;
  list-style: none;
  -webkit-user-select: none;
  user-select: none;
  background-color: #f0b95a;
  border-radius: 1rem 1rem 0 0;
}

.qa-item:not([open]) .qa-question {
  border-radius: 1rem;
}

.qa-question::-webkit-details-marker {
  display: none;
}

.qa-question::marker {
  content: "";
}

.qa-q-label {
  font-size: 3rem;
  font-weight: bold;
  color: #333;
  flex-shrink: 0;
  line-height: 1;
}

.qa-q-text {
  font-size: 2.2rem;
  font-weight: bold;
  color: #333;
  line-height: 1.5;
  flex: 1;
}

/* 白丸矢印 */
.qa-arrow {
  flex-shrink: 0;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  background-color: #fff;
  position: relative;
  transition: transform 0.3s ease;
}

.qa-arrow::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0.7rem;
  height: 0.7rem;
  border-right: 2px solid #e8a035;
  border-bottom: 2px solid #e8a035;
  transform: translate(-50%, -65%) rotate(45deg);
}

.qa-item[open] .qa-arrow {
  transform: rotate(180deg);
}

/* 回答（スムーズ開閉アニメーション） */
.qa-answer-wrap {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s ease;
}

.qa-item[open] .qa-answer-wrap {
  grid-template-rows: 1fr;
}

.qa-answer-inner {
  overflow: hidden;
}

.qa-answer {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 0 2rem 2rem;
  border-top: 1px solid #eee;
  padding-top: 1.6rem;
}

.qa-a-label {
  font-size: 3rem;
  font-weight: bold;
  color: #e8a035;
  flex-shrink: 0;
  line-height: 1.4;
}

.qa-answer p {
  font-size: 2rem;
  font-weight: 600;
  color: #555;
  line-height: 1.8;
}

.instagram-link {
  color: #e8a035;
  font-weight: bold;
  display: inline-block;
  margin-top: 0.6rem;
}

.instagram-link:hover {
  text-decoration: underline;
}

/* ===== フッター ===== */
.footer {
  background-color: #e8a035;
  border-top: none;
  padding: 2rem 2.4rem;
  line-height: 1.6;
  font-size: 1.2rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem 1.6rem;
}

.footer-nav a {
  font-size: 1.2rem;
  color: #fff;
  white-space: nowrap;
}

.footer-nav a:hover {
  color: #fff;
  text-decoration: underline;
  opacity: 0.8;
}

/* ===== レスポンシブ ===== */
@media screen and (max-width: 750px) {
  html {
    font-size: calc(62.5% * (100vw / 750));
  }
}