/* =========================
   Base
========================= */

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  background: #f7f8fc;
  color: #1f2937;
  font-family:
    -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, Arial, sans-serif;
  line-height: 1.7;
}

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

a {
  color: #2f5bd3;
}

a:hover {
  color: #1d3fa6;
}

code,
pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

code {
  padding: 2px 6px;
  border-radius: 6px;
  background: #f2f4fa;
  font-size: 0.95em;
}

pre {
  overflow-x: auto;
  margin: 0 0 16px;
  padding: 14px 16px;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  background: #ffffff;
  line-height: 1.6;
}

/* =========================
   Typography
========================= */

h1,
h2,
h3 {
  margin-top: 0;
  color: #111827;
  line-height: 1.25;
}

h1 {
  margin-bottom: 16px;
  font-size: clamp(2rem, 3.5vw, 2.8rem);
}

h2 {
  margin-bottom: 14px;
  font-size: 1.5rem;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.15rem;
}

p {
  margin: 0 0 16px;
}

ul,
ol {
  margin: 0 0 16px 1.2rem;
}

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

label {
  display: inline-block;
  margin-bottom: 6px;
  color: #374151;
  font-size: 0.95rem;
}

.lead {
  margin-bottom: 28px;
  color: #4b5563;
  font-size: 1.1rem;
}

.muted {
  color: #6b7280;
}

/* =========================
   Layout
========================= */

header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid #e5e7eb;
  background: #ffffff;
}

footer {
  margin-top: 64px;
  border-top: 1px solid #e5e7eb;
  background: #ffffff;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 20px 40px;
}

.hero {
  padding: 18px 0 8px;
}

.hero p:last-child {
  max-width: 720px;
}

.section-block {
  margin-top: 36px;
  padding-top: 4px;
}

.section-block + .section-block {
  margin-top: 44px;
}

/* =========================
   Header / Footer
========================= */

.site-header,
.site-footer {
  max-width: 960px;
  margin: 0 auto;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 18px 20px;
}

.site-footer {
  padding: 22px 20px 28px;
  color: #6b7280;
  font-size: 0.95rem;
}

.logo {
  color: #111827;
  text-decoration: none;
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1.1;
}

.logo:hover {
  color: #111827;
  text-decoration: none;
}

.global-nav,
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.global-nav a,
.footer-nav a {
  text-decoration: none;
  font-weight: 500;
}

.global-nav a[aria-current="page"] {
  color: #111827;
  font-weight: 700;
}

.footer-nav a {
  color: #6b7280;
}

.footer-nav a:hover {
  color: #374151;
}

.copyright {
  margin-top: 12px;
  color: #9ca3af;
  font-size: 0.9rem;
}

/* =========================
   Navigation helpers
========================= */

.breadcrumb {
  margin-bottom: 24px;
  color: #6b7280;
  font-size: 0.92rem;
}

.breadcrumb a {
  color: #6b7280;
  text-decoration: none;
}

.breadcrumb a:hover {
  color: #374151;
  text-decoration: underline;
}

.breadcrumb .separator {
  margin: 0 6px;
  color: #9ca3af;
}

.related-links {
  margin-top: 48px;
  padding-top: 22px;
  border-top: 1px solid #e5e7eb;
}

.related-links h2 {
  margin-bottom: 12px;
  font-size: 1.05rem;
}

.related-links ul {
  margin: 0;
  padding-left: 1.2rem;
}

.related-links li + li {
  margin-top: 8px;
}

/* =========================
   Cards / Lists
========================= */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
  margin-top: 18px;
}

.card {
  border: 1px solid #e5e7eb;
  border-radius: 18px;
  background: #ffffff;
  padding: 22px 20px;
  box-shadow: 0 1px 2px rgba(17, 24, 39, 0.04);
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08);
}

.card h3 {
  margin-bottom: 10px;
}

.card p:last-child {
  margin-bottom: 0;
}

.card-label {
  display: inline-block;
  margin: 0 0 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: #eef2ff;
  color: #4f46e5;
  font-size: 0.8rem;
  font-weight: 700;
  line-height: 1.2;
}

.card-actions,
.link-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.card-actions li + li {
  margin-top: 8px;
}

.card-actions a,
.link-list a {
  text-decoration: none;
  font-weight: 600;
}

.card-actions a:hover,
.link-list a:hover {
  text-decoration: underline;
}

.link-list li {
  padding: 14px 0;
  border-bottom: 1px solid #eceef5;
}

.link-list li:first-child {
  padding-top: 0;
}

.link-list li:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.link-list span {
  display: block;
  margin-top: 4px;
  color: #666;
}

/* =========================
   Forms
========================= */

input,
select,
textarea,
button {
  font: inherit;
}

input,
select,
textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #d1d5db;
  border-radius: 12px;
  background: #ffffff;
  color: #111827;
}

input[type="date"] {
  max-width: 220px;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: #7c8cf8;
  box-shadow: 0 0 0 3px rgba(124, 140, 248, 0.12);
}

button {
  display: inline-block;
  padding: 12px 18px;
  border: 0;
  border-radius: 12px;
  background: #2f5bd3;
  color: #ffffff;
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  background: #2448ab;
}

.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.checkbox-group {
  margin-top: 10px;
}

.checkbox-title {
  margin-bottom: 10px;
  font-weight: 600;
}

.checkbox-item {
  display: block;
  margin-bottom: 8px;
}

.checkbox-item input {
  width: auto;
  margin-right: 8px;
}

.search-box input {
  font-size: 18px;
  padding: 14px 16px;
}

.search-box button {
  font-size: 16px;
}

/* =========================
   Responsive
========================= */

@media (max-width: 720px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .global-nav,
  .footer-nav {
    gap: 14px;
  }

  .container {
    padding: 20px 16px 32px;
  }

  .card {
    padding: 18px 16px;
  }

  h1 {
    font-size: 2rem;
  }
}
/* ============================= */
/* Page header */
/* ============================= */

.page-header {
  margin-bottom: 2.5rem;
}

.page-header h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.lead {
  color: #555;
  font-size: 1.1rem;
}

/* ============================= */
/* Content sections */
/* ============================= */

.content-section {
  margin-bottom: 2.5rem;
}

.content-section h2 {
  margin-bottom: 0.8rem;
}

.content-section p {
  margin-bottom: 0.8rem;
  line-height: 1.7;
}

/* ============================= */
/* Link list */
/* ============================= */

.link-list {
  padding-left: 1.2rem;
}

.link-list li {
  margin-bottom: 0.4rem;
}

/* ============================= */
/* Cards */
/* ============================= */

.card-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

@media (min-width: 700px) {
  .card-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.card {
  border: 1px solid #e5e5e5;
  border-radius: 6px;
  padding: 1rem;
  background: #fff;
}

.card h3 {
  margin-top: 0;
}