:root {
  --bg: #e9f7e8;
  --bg-soft: #f4fbf3;
  --surface: #ffffff;
  --text: #223329;
  --muted: #5a6b61;
  --accent: #78c7ea;
  --accent-strong: #4baed9;
  --line: #cfe2d6;
  --radius: 16px;
  --shadow: 0 10px 28px rgba(31, 70, 46, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", sans-serif;
  color: var(--text);
  line-height: 1.7;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0.35)),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 34px,
      rgba(111, 161, 132, 0.08) 34px,
      rgba(111, 161, 132, 0.08) 35px
    ),
    var(--bg);
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 12px;
  z-index: 100;
}

.skip-link:focus {
  top: 12px;
}

.container {
  width: min(1080px, calc(100% - 32px));
  margin-inline: auto;
}

.section {
  padding: 52px 0;
}

.section h2 {
  margin: 0 0 20px;
  font-size: clamp(1.35rem, 1.1rem + 1.2vw, 2rem);
  line-height: 1.3;
}

.card {
  background: var(--surface);
  border: 1px solid #d7e6dc;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero {
  padding: 20px 0 24px;
}

.hero__inner {
  padding: 28px 20px;
}

.eyebrow {
  margin: 0 0 10px;
  color: #2f7c9b;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 1.3rem + 2.2vw, 3rem);
  line-height: 1.25;
}

.hero__lead {
  margin: 16px 0 0;
  color: var(--muted);
}

.hero__actions {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 12px 18px;
  text-decoration: none;
  font-weight: 700;
  border: 1px solid transparent;
}

.button--primary {
  background: var(--accent);
  color: #103448;
}

.button--primary:hover,
.button--primary:focus-visible {
  background: var(--accent-strong);
}

.button--ghost {
  background: #f6fcff;
  border-color: #b7dced;
  color: #225d78;
}

.hero__note {
  margin-top: 22px;
}

.note {
  border-radius: 14px;
  border: 1px solid #cce0d4;
  background:
    repeating-linear-gradient(
      180deg,
      #fff,
      #fff 34px,
      #eef6f0 34px,
      #eef6f0 35px
    );
  padding: 14px 14px 8px;
}

.note p {
  margin: 0 0 7px;
  font-weight: 600;
  color: #335143;
}

.grid {
  display: grid;
  gap: 14px;
}

.item,
.feature,
.faq-item,
.cta-card {
  padding: 18px;
}

.item h3,
.feature h3 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 1.08rem;
}

.item p,
.feature p {
  margin: 0;
  color: var(--muted);
}

.section--tint {
  background: linear-gradient(180deg, rgba(191, 229, 247, 0.2), rgba(191, 229, 247, 0.05));
}

.stack {
  display: grid;
  gap: 14px;
}

.feature ul {
  margin: 0;
  padding-left: 1.15rem;
}

.feature li + li {
  margin-top: 6px;
}

.section--pricing {
  background: var(--bg-soft);
}

.price-card {
  padding: 24px;
  text-align: center;
  border: 2px solid #bde0f0;
}

.price-card__label {
  margin: 0;
  color: #2f6c85;
  font-weight: 700;
}

.price-card__value {
  margin: 8px 0;
  line-height: 1.2;
  font-weight: 700;
  color: #184f68;
  font-size: clamp(2rem, 1.4rem + 3vw, 3.2rem);
}

.price-card__value span {
  font-size: 1.15em;
}

.price-card__desc,
.price-card__limit {
  margin: 0;
  color: var(--muted);
}

.price-card__limit {
  margin-top: 8px;
  font-size: 0.95rem;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

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

.faq-item summary::after {
  content: "+";
  float: right;
  color: #2d6a83;
  font-size: 1.2rem;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item p {
  margin: 10px 0 0;
  color: var(--muted);
}

.section--cta {
  padding-top: 26px;
  padding-bottom: 64px;
}

.cta-card {
  text-align: center;
  background: linear-gradient(180deg, #ffffff, #f4fbff);
}

.cta-card h2 {
  margin: 0;
}

.cta-card p {
  color: var(--muted);
  margin: 10px 0 18px;
}

.footer {
  background: #f1f6f2;
  border-top: 1px solid #d5e4da;
  padding: 24px 0 30px;
}

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

.footer__brand {
  margin: 0;
  font-weight: 700;
}

.footer__links {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.footer__links a {
  text-decoration: none;
  border-bottom: 1px solid #9bb7a7;
}

.footer small {
  color: #557165;
}

@media (min-width: 760px) {
  .hero {
    padding-top: 34px;
  }

  .hero__inner {
    padding: 38px;
  }

  .grid--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .stack {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .feature {
    min-height: 100%;
  }

  .footer__inner {
    grid-template-columns: auto 1fr auto;
    align-items: center;
  }

  .footer__links {
    justify-content: center;
  }
}