*, *::before, *::after {
  box-sizing: border-box;
}

:root {
  --ink: #20221f;
  --muted: #62665f;
  --paper: #ffffff;
  --soft: #f7f3eb;
  --main: #4f8068;
  --main-dark: #2f5f49;
  --accent: #c86f55;
  --pale: #eaf4ed;
  --border: #e6dfd2;
  --shadow: 0 18px 42px rgba(39, 37, 31, 0.12);
  --max: 1080px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--soft);
  color: var(--ink);
  font-family: "Noto Sans JP", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
}

.nav {
  width: min(var(--max), calc(100% - 32px));
  min-height: 66px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: grid;
  line-height: 1.2;
}

.brand strong {
  color: var(--main-dark);
  font-family: "Noto Serif JP", serif;
  font-size: 1.12rem;
}

.brand span {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
}

.nav-links {
  display: flex;
  gap: 20px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 800;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 900;
  line-height: 1.25;
}

.btn-main {
  background: var(--main-dark);
  color: #fff;
  box-shadow: 0 12px 24px color-mix(in srgb, var(--main-dark) 26%, transparent);
}

.btn-light {
  background: #fff;
  border-color: var(--border);
  color: var(--main-dark);
}

.hero {
  background:
    linear-gradient(120deg, color-mix(in srgb, var(--pale) 82%, white), rgba(255, 255, 255, 0.86) 46%, color-mix(in srgb, var(--accent) 12%, white)),
    radial-gradient(circle at 82% 20%, color-mix(in srgb, var(--accent) 28%, transparent), transparent 28%),
    radial-gradient(circle at 72% 78%, color-mix(in srgb, var(--main) 22%, transparent), transparent 26%);
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 70px 0 62px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--main-dark);
  font-size: 0.82rem;
  font-weight: 900;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--accent);
}

h1, h2, h3, p {
  margin: 0;
}

h1 {
  max-width: 680px;
  margin-top: 18px;
  font-family: "Noto Serif JP", serif;
  font-size: 3.75rem;
  line-height: 1.18;
}

.lead {
  max-width: 610px;
  margin-top: 22px;
  color: #3f423d;
  font-size: 1.08rem;
  font-weight: 600;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.visual-card {
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.visual {
  min-height: 330px;
  position: relative;
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--main) 22%, white), rgba(255, 255, 255, 0.3)),
    var(--visual);
}

.visual::before,
.visual::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
}

.visual::before {
  width: 180px;
  height: 180px;
  right: 36px;
  top: 42px;
}

.visual::after {
  width: 260px;
  height: 72px;
  left: 40px;
  bottom: 48px;
  border-radius: 8px;
}

.visual-caption {
  padding: 22px;
}

.visual-caption strong {
  color: var(--main-dark);
  display: block;
  font-size: 1.05rem;
}

.visual-caption span {
  color: var(--muted);
  display: block;
  margin-top: 6px;
  font-size: 0.92rem;
}

.section {
  padding: 78px 0;
}

.section.white {
  background: #fff;
}

.wrap {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1fr);
  align-items: end;
  gap: 34px;
  margin-bottom: 30px;
}

h2 {
  margin-top: 10px;
  font-family: "Noto Serif JP", serif;
  font-size: 2.46rem;
  line-height: 1.3;
}

.section-copy {
  color: var(--muted);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.card {
  min-height: 214px;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.card .num {
  color: var(--accent);
  font-family: "Noto Serif JP", serif;
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1;
}

.card h3 {
  margin-top: 22px;
  font-size: 1.08rem;
  line-height: 1.45;
}

.card p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.92rem;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 22px;
  align-items: start;
}

.panel {
  padding: 28px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.menu-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.menu-list li {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  font-weight: 800;
}

.menu-list span {
  color: var(--main-dark);
  min-width: max-content;
}

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

.voice blockquote {
  margin: 0;
  padding: 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: #444840;
}

.cta {
  background: var(--main-dark);
  color: #fff;
  text-align: center;
}

.cta h2 {
  color: #fff;
}

.cta p {
  max-width: 640px;
  margin: 18px auto 0;
  color: rgba(255, 255, 255, 0.78);
}

.footer {
  padding: 28px 0;
  background: #18221d;
  color: rgba(255, 255, 255, 0.72);
  text-align: center;
  font-size: 0.86rem;
}

.back-link {
  position: fixed;
  left: 16px;
  bottom: 16px;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--border);
  box-shadow: 0 12px 30px rgba(33, 34, 31, 0.16);
  backdrop-filter: blur(12px);
}

@media (max-width: 860px) {
  .nav-links {
    display: none;
  }

  .hero-inner,
  .section-head,
  .split {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    padding: 48px 0 42px;
  }

  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2rem;
  }

  .cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15px;
  }

  .nav {
    width: min(var(--max), calc(100% - 24px));
  }

  .nav .btn {
    min-height: 40px;
    padding: 9px 13px;
    font-size: 0.82rem;
  }

  .hero-inner,
  .wrap {
    width: min(var(--max), calc(100% - 24px));
  }

  h1 {
    font-size: 2.42rem;
  }

  .hero-actions .btn,
  .cta .btn {
    width: 100%;
  }

  .visual {
    min-height: 250px;
  }

  .panel {
    padding: 20px;
  }

  .menu-list li {
    display: grid;
  }
}