:root {
  color: #17211e;
  background: #f6f8f4;
  font-family: "Yu Gothic", "Hiragino Sans", "Meiryo", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #f6f8f4;
}

a {
  color: #245f72;
  font-weight: 800;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px max(18px, calc((100vw - 1060px) / 2));
  border-bottom: 1px solid #dbe2d5;
  background: rgba(246, 248, 244, 0.95);
}

.brand {
  color: #213d37;
  font-size: 1.12rem;
  font-weight: 900;
  text-decoration: none;
}

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
}

nav a {
  border-radius: 8px;
  color: #31433d;
  padding: 6px 8px;
  text-decoration: none;
}

nav a[aria-current="page"] {
  background: #e5eee8;
  color: #1f493f;
}

main {
  width: min(1060px, calc(100% - 32px));
  margin: 0 auto;
}

.hero,
.page-head {
  padding: clamp(42px, 7vw, 82px) 0 30px;
}

.hero h1,
.page-head h1 {
  margin: 0;
  color: #17342f;
  font-size: clamp(2.4rem, 8vw, 5.2rem);
  line-height: 1;
  letter-spacing: 0;
}

.eyebrow {
  margin: 0 0 10px;
  color: #b15b2e;
  font-size: 0.86rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lead,
.page-head p {
  max-width: 720px;
  margin: 18px 0 0;
  color: #4c5a54;
  font-size: clamp(1.04rem, 2.4vw, 1.28rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border: 1px solid #bac9c2;
  border-radius: 8px;
  background: #ffffff;
  color: #1f493f;
  padding: 0 16px;
  text-decoration: none;
}

.button.primary {
  border-color: #1f493f;
  background: #1f493f;
  color: #ffffff;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  padding: 18px 0 34px;
}

.content-grid.compact {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.content-grid article,
.faq-list article,
.document {
  border: 1px solid #dbe2d5;
  border-radius: 8px;
  background: #ffffff;
  padding: clamp(18px, 3vw, 26px);
}

h2 {
  margin: 0 0 10px;
  color: #1f493f;
  font-size: 1.2rem;
  line-height: 1.35;
  letter-spacing: 0;
}

p,
ul {
  margin: 0;
  color: #33413c;
}

ul {
  padding-left: 1.2em;
}

li + li {
  margin-top: 4px;
}

.check-list {
  display: grid;
  gap: 6px;
  padding-left: 1em;
  font-weight: 800;
}

.notice {
  margin: 6px 0 46px;
  border-left: 5px solid #df9b3f;
  border-radius: 8px;
  background: #fff7e9;
  padding: 20px 22px;
}

.page {
  padding-bottom: 46px;
}

.document {
  display: grid;
  gap: 14px;
  max-width: 860px;
  margin-bottom: 36px;
}

.document h2 {
  margin-top: 8px;
}

.date-line {
  margin-top: 8px;
  color: #6a746f;
  font-weight: 800;
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 900px;
  margin-bottom: 36px;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 20px max(18px, calc((100vw - 1060px) / 2));
  border-top: 1px solid #dbe2d5;
  color: #5c6862;
}

.site-footer p {
  color: inherit;
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    justify-content: flex-start;
  }

  .content-grid,
  .content-grid.compact {
    grid-template-columns: 1fr;
  }
}