:root {
  --green-950: #032315;
  --green-900: #06371f;
  --green-800: #0b4a2c;
  --green-700: #0f6139;
  --gold: #c79a2d;
  --gold-light: #ead38d;
  --ivory: #fffdf3;
  --cream: #f7f0d8;
  --ink: #163323;
  --shadow: 0 18px 45px rgba(5, 39, 24, 0.2);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 255, 236, 0.85), transparent 34rem),
    linear-gradient(180deg, #123b24 0%, #eff3df 12%, #f9f4df 88%, #123b24 100%);
  font-family: "Yu Mincho", "Hiragino Mincho ProN", "Yu Gothic", "Hiragino Sans", Meiryo, serif;
}

a {
  color: inherit;
}

.lp {
  width: min(100%, 720px);
  margin: 0 auto;
  background: var(--ivory);
  box-shadow: 0 0 60px rgba(0, 0, 0, 0.22);
}

.visual-section {
  position: relative;
  line-height: 0;
  background: var(--ivory);
}

.visual-section img {
  display: block;
  width: 100%;
  height: auto;
}

.image-hotspot {
  position: absolute;
  z-index: 2;
  display: block;
  border-radius: 999px;
  text-decoration: none;
}

.image-hotspot span {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.hero-hotspot {
  left: 7%;
  right: 7%;
  bottom: 1.7%;
  height: 5.8%;
}

.period-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 13px 18px 14px;
  border-top: 1px solid rgba(234, 211, 141, 0.7);
  border-bottom: 1px solid rgba(199, 154, 45, 0.72);
  color: var(--ivory);
  background:
    linear-gradient(90deg, rgba(234, 211, 141, 0.12), transparent 22%, transparent 78%, rgba(234, 211, 141, 0.12)),
    linear-gradient(180deg, var(--green-800), var(--green-950));
  font-family: "Yu Gothic", "Hiragino Sans", Meiryo, sans-serif;
  line-height: 1.35;
  text-align: center;
}

.period-bar span {
  color: var(--gold-light);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.period-bar strong {
  color: #fff9d8;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(18px, 5vw, 27px);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.period-bar-secondary {
  box-shadow: inset 0 1px 0 rgba(255, 255, 232, 0.18);
}

.download-hotspot {
  left: 11%;
  right: 11%;
  bottom: 4.5%;
  height: 7.4%;
}

.qa-section {
  position: relative;
  overflow: hidden;
  padding: 46px 18px 54px;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 246, 194, 0.9), transparent 23rem),
    linear-gradient(180deg, #fffdf3 0%, #f5efd7 58%, #e6f0de 100%);
}

.qa-section::before,
.qa-section::after {
  position: absolute;
  content: "";
  width: 190px;
  height: 190px;
  pointer-events: none;
  background:
    radial-gradient(circle, rgba(199, 154, 45, 0.18) 0 2px, transparent 3px),
    radial-gradient(circle at 30% 30%, rgba(12, 91, 52, 0.25), transparent 42%);
  background-size: 19px 19px, 100% 100%;
  opacity: 0.55;
}

.qa-section::before {
  top: -74px;
  left: -78px;
}

.qa-section::after {
  right: -78px;
  bottom: -76px;
}

.qa-shell {
  position: relative;
  z-index: 1;
  padding: 26px 14px 18px;
  border: 1px solid rgba(199, 154, 45, 0.62);
  border-radius: 8px;
  background: rgba(255, 253, 243, 0.92);
  box-shadow: var(--shadow);
}

.section-kicker {
  width: max-content;
  margin: 0 auto 10px;
  padding: 6px 18px;
  border: 1px solid var(--gold);
  border-radius: 999px;
  color: var(--gold);
  background: var(--green-900);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.qa-shell h2 {
  margin: 0;
  color: var(--green-950);
  font-size: clamp(30px, 9vw, 48px);
  line-height: 1.18;
  text-align: center;
  letter-spacing: 0.04em;
}

.qa-lead {
  margin: 10px 0 22px;
  color: #405445;
  font-size: 15px;
  line-height: 1.8;
  text-align: center;
}

.accordion {
  display: grid;
  gap: 10px;
}

.accordion details {
  border: 1px solid rgba(199, 154, 45, 0.62);
  border-radius: 8px;
  background: linear-gradient(180deg, #fffef8 0%, #fbf4df 100%);
  box-shadow: 0 8px 18px rgba(14, 75, 45, 0.08);
}

.accordion summary {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 58px;
  padding: 14px 44px 14px 54px;
  color: var(--green-950);
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  list-style: none;
}

.accordion summary::-webkit-details-marker {
  display: none;
}

.accordion summary::before {
  position: absolute;
  left: 14px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: var(--ivory);
  background: linear-gradient(145deg, var(--green-700), var(--green-950));
  content: "Q";
  font-family: Georgia, serif;
  font-size: 16px;
  line-height: 28px;
  text-align: center;
  box-shadow: inset 0 0 0 1px rgba(234, 211, 141, 0.8);
}

.accordion summary::after {
  position: absolute;
  right: 18px;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  content: "";
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.accordion details[open] summary::after {
  transform: rotate(225deg);
}

.accordion p {
  margin: 0;
  padding: 0 18px 18px 54px;
  color: #304738;
  font-family: "Yu Gothic", "Hiragino Sans", Meiryo, sans-serif;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.8;
}

.site-footer {
  padding: 30px 18px 28px;
  color: var(--ivory);
  background: linear-gradient(180deg, var(--green-900), var(--green-950));
  text-align: center;
}

.footer-logo {
  display: block;
  width: min(210px, 58vw);
  height: auto;
  margin: 0 auto 20px;
  filter: drop-shadow(0 8px 14px rgba(0, 0, 0, 0.22));
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
}

.footer-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid rgba(234, 211, 141, 0.78);
  border-radius: 999px;
  color: #fff9d8;
  background: rgba(255, 255, 255, 0.04);
  font-family: "Yu Gothic", "Hiragino Sans", Meiryo, sans-serif;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.05em;
}

.copyright {
  margin: 0;
  color: rgba(255, 249, 216, 0.76);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 12px;
  letter-spacing: 0.04em;
}

@media (max-width: 420px) {
  .qa-section {
    padding: 34px 10px 42px;
  }

  .qa-shell {
    padding: 22px 10px 14px;
  }

  .period-bar {
    flex-direction: column;
    gap: 3px;
    padding: 10px 14px 12px;
  }

  .accordion summary {
    padding-right: 36px;
    font-size: 15px;
  }
}