:root {
  --color-main: #1f3a5f;
  --color-sub: #e8eef5;
  --color-accent: #c97b84;
  --color-bg: #fafbfc;
  --color-text: #222222;
  --color-muted: #5f6b7a;
  --color-border: #d7dfe8;
  --radius-md: 12px;
  --radius-lg: 18px;
  --shadow-soft: 0 8px 24px rgba(31, 58, 95, 0.08);
  --container: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
}

a {
  color: var(--color-main);
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

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

.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--color-main);
  color: #fff;
  padding: 0.5rem 0.8rem;
  z-index: 1000;
}

.skip-link:focus {
  top: 0;
}

.site-header {
  position: sticky;
  top: 0;
  background: rgba(250, 251, 252, 0.95);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(6px);
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 72px;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  color: var(--color-main);
}

.global-nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.global-nav a {
  display: inline-block;
  padding: 0.25rem 0.4rem;
  border-radius: 8px;
  font-size: 0.95rem;
}

.global-nav a.is-current,
.global-nav a[aria-current="page"] {
  background: var(--color-sub);
  color: var(--color-main);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-main);
  border-radius: 10px;
  padding: 0.45rem 0.7rem;
  font-weight: 600;
}

.page-main {
  padding-bottom: 3.2rem;
}

.breadcrumb {
  font-size: 0.9rem;
  color: var(--color-muted);
  padding: 1rem 0;
}

.breadcrumb ol {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.breadcrumb li + li::before {
  content: ">";
  margin-right: 0.45rem;
  color: #9aa7b8;
}

.hero {
  padding: 4.2rem 0 2.8rem;
  background: linear-gradient(165deg, #ffffff 0%, #f2f6fb 55%, #f8eaec 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.4rem;
  align-items: stretch;
}

.hero h1 {
  margin: 0 0 0.8rem;
  line-height: 1.3;
  font-size: clamp(1.8rem, 2.8vw, 2.5rem);
  color: var(--color-main);
}

.lead {
  color: #2d3642;
  font-size: 1.02rem;
}

.hero-panel {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.1rem;
  box-shadow: var(--shadow-soft);
  min-height: 280px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid #ccd7e5;
  background: #fff;
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
  font-size: 0.85rem;
  color: var(--color-main);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.72rem 1.2rem;
  border: 1px solid transparent;
  font-weight: 600;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-main);
  color: #fff;
}

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

section {
  padding: 2.8rem 0;
}

.section-head {
  margin-bottom: 1.2rem;
}

.section-head h2 {
  margin: 0 0 0.4rem;
  font-size: 1.55rem;
  color: var(--color-main);
}

.section-head p {
  margin: 0;
  color: var(--color-muted);
}

.grid-2,
.grid-3 {
  display: grid;
  gap: 1rem;
}

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

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

.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  box-shadow: 0 2px 10px rgba(31, 58, 95, 0.04);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.45rem;
  font-size: 1.08rem;
  color: #1c3557;
}

.card p,
.card li {
  margin-top: 0;
  color: #354152;
}

.card ul {
  padding-left: 1.1rem;
  margin-bottom: 0;
}

.surface {
  background: #ffffff;
}

.surface-soft {
  background: #f5f8fc;
}

.notice {
  border-left: 4px solid var(--color-accent);
  padding: 0.8rem 1rem;
  background: #fff3f5;
  border-radius: 0 10px 10px 0;
  color: #5a3439;
}

.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.9rem;
}

.steps li {
  position: relative;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.9rem 1rem 0.9rem 3rem;
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 1rem;
  top: 0.8rem;
  width: 1.4rem;
  height: 1.4rem;
  border-radius: 50%;
  background: var(--color-main);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  font-weight: 700;
}

.cta-block {
  background: linear-gradient(160deg, #1f3a5f 0%, #284b78 70%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 1.6rem;
}

.cta-block h2,
.cta-block h3 {
  color: #fff;
  margin-top: 0;
}

.cta-block p {
  margin-top: 0;
  color: #dce8f5;
}

.cta-block .btn-primary {
  background: #fff;
  color: var(--color-main);
}

.cta-block .btn-secondary {
  border-color: #dce8f5;
  color: #fff;
  background: transparent;
}

.faq-list details {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.9rem;
}

.faq-list details + details {
  margin-top: 0.8rem;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
  color: #1b3558;
}

.form-grid {
  display: grid;
  gap: 0.9rem;
}

label {
  display: grid;
  gap: 0.35rem;
  font-weight: 600;
  color: #30435c;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid #cbd6e4;
  border-radius: 10px;
  padding: 0.7rem 0.8rem;
  font: inherit;
  color: #1f2c3c;
  background: #fff;
}

textarea {
  min-height: 180px;
  resize: vertical;
}

.form-note {
  font-size: 0.9rem;
  color: var(--color-muted);
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--color-border);
}

th,
td {
  border: 1px solid var(--color-border);
  padding: 0.75rem;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--color-sub);
  color: #213a5d;
}

.related-links {
  border-top: 1px solid var(--color-border);
  margin-top: 2rem;
  padding-top: 1.3rem;
}

.related-links ul {
  margin: 0;
  padding-left: 1rem;
  display: grid;
  gap: 0.35rem;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  background: #f3f6f9;
  padding: 2rem 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 1rem;
}

.footer-nav {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.25rem;
}

.small {
  font-size: 0.88rem;
  color: var(--color-muted);
}

.copy {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: #607086;
}