:root {
  --primary: #1e5ba8;
  --primary-dark: #154380;
  --primary-light: #4a90d9;
  --accent-bg: #f0f7ff;
  --text: #2c3e50;
  --muted: #6c757d;
  --border: #e1e8ed;
  --white: #ffffff;
  --bg: #fafcff;
  --success: #2d8659;
  --shadow-sm: 0 1px 3px rgba(30, 91, 168, 0.08);
  --shadow-md: 0 4px 12px rgba(30, 91, 168, 0.10);
  --radius: 8px;
  --radius-lg: 12px;
  --container: 1200px;
  --header-h: 68px;
  --font: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-dark); }
ul { list-style: none; padding: 0; margin: 0; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }

/* ===== Header ===== */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-h);
}
.logo { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; }
.logo-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 8px;
  background: var(--primary); color: var(--white); font-size: 18px;
}
.logo-text { font-size: 18px; letter-spacing: .02em; }

.site-nav ul { display: flex; align-items: center; gap: 4px; }
.site-nav a {
  padding: 10px 14px; color: var(--text); font-weight: 500;
  border-radius: 6px; display: inline-block;
}
.site-nav a:hover { background: var(--accent-bg); color: var(--primary); }
.site-nav .has-dropdown { position: relative; }
.site-nav .dropdown {
  position: absolute; top: 100%; left: 0; min-width: 180px;
  background: var(--white); border: 1px solid var(--border); border-radius: 8px;
  box-shadow: var(--shadow-md); padding: 6px; display: none; flex-direction: column;
}
.site-nav .has-dropdown:hover .dropdown,
.site-nav .has-dropdown:focus-within .dropdown { display: flex; }
.site-nav .dropdown a { padding: 8px 12px; }

.nav-toggle {
  display: none; background: none; border: 0; padding: 8px; cursor: pointer;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px; background: var(--text); margin: 5px 0;
  transition: transform .2s;
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, #f0f7ff 0%, #e3eefb 100%);
  padding: 56px 0;
  border-bottom: 1px solid var(--border);
}
.hero-inner {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center;
}
.hero h1 {
  font-size: 36px; line-height: 1.35; margin: 0 0 16px; color: var(--primary-dark);
  letter-spacing: .01em;
}
.hero p { font-size: 17px; color: var(--text); margin: 0 0 28px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-image img {
  border-radius: var(--radius-lg); box-shadow: var(--shadow-md);
  aspect-ratio: 4 / 3; object-fit: cover;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 24px; border-radius: var(--radius); font-weight: 600;
  font-size: 15px; border: 2px solid transparent; cursor: pointer;
  transition: all .2s;
}
.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { background: var(--primary-dark); color: var(--white); }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: var(--white); }

/* ===== Layout ===== */
.main-layout {
  display: grid; grid-template-columns: minmax(0,1fr) 300px; gap: 40px;
  padding: 48px 20px;
}
.section { margin-bottom: 48px; }
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 2px solid var(--primary); padding-bottom: 10px; margin-bottom: 20px;
}
.section-header h2 { margin: 0; font-size: 22px; color: var(--primary-dark); }
.section-link { font-size: 14px; font-weight: 500; }

/* ===== Article grid ===== */
.article-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.article-card {
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden; transition: transform .2s, box-shadow .2s;
  display: flex; flex-direction: column;
}
.article-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.article-card .thumb {
  aspect-ratio: 16 / 9; background: var(--accent-bg);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary-light); font-size: 40px; font-weight: 700;
}
.article-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.article-card .body { padding: 18px; flex: 1; display: flex; flex-direction: column; }
.article-card .cat {
  display: inline-block; font-size: 12px; color: var(--white);
  background: var(--primary); padding: 3px 10px; border-radius: 12px;
  margin-bottom: 10px; align-self: flex-start;
}
.article-card .cat.cat-subsidy { background: #d9822b; }
.article-card .cat.cat-ai { background: #2d8659; }
.article-card .cat.cat-training { background: #7a4bd1; }
.article-card .cat.cat-management { background: var(--primary); }
.article-card h3 {
  font-size: 16px; line-height: 1.55; margin: 0 0 10px;
  color: var(--text);
}
.article-card .excerpt {
  font-size: 14px; color: var(--muted); line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; margin: 0 0 14px;
}
.article-card .meta {
  font-size: 12px; color: var(--muted); margin-top: auto;
  display: flex; justify-content: space-between;
}

/* ===== Category grid ===== */
.category-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 20px;
}
.category-card {
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px 20px; text-align: center; transition: all .2s; color: var(--text);
}
.category-card:hover { border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.category-icon {
  width: 56px; height: 56px; margin: 0 auto 12px; border-radius: 50%;
  background: var(--accent-bg); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 20px;
}
.category-card h3 { font-size: 17px; margin: 0 0 6px; color: var(--primary-dark); }
.category-card p { font-size: 13px; color: var(--muted); margin: 0; }

/* ===== Prefecture grid ===== */
.pref-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px;
}
.pref-card {
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; text-align: center; font-weight: 600; color: var(--text);
  transition: all .2s;
}
.pref-card:hover { border-color: var(--primary); color: var(--primary); background: var(--accent-bg); }

/* ===== Sidebar ===== */
.sidebar > * + * { margin-top: 24px; }
.sidebar-box {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 20px;
}
.sidebar-box h3 {
  font-size: 15px; margin: 0 0 14px; padding-bottom: 10px;
  border-bottom: 1px solid var(--border); color: var(--primary-dark);
}
.sidebar-box ol { counter-reset: pop; padding-left: 0; }
.sidebar-box ol li {
  counter-increment: pop; padding: 10px 0 10px 32px; position: relative;
  border-bottom: 1px dashed var(--border); font-size: 14px; line-height: 1.5;
}
.sidebar-box ol li:last-child { border-bottom: 0; }
.sidebar-box ol li::before {
  content: counter(pop); position: absolute; left: 0; top: 10px;
  width: 22px; height: 22px; background: var(--primary); color: var(--white);
  font-size: 12px; font-weight: 700;
  display: flex; align-items: center; justify-content: center; border-radius: 50%;
}
.sidebar-box a { color: var(--text); }
.sidebar-box a:hover { color: var(--primary); }

/* ===== Ad slot ===== */
.ad-slot {
  background: repeating-linear-gradient(45deg, #f5f7fa, #f5f7fa 8px, #eef2f7 8px, #eef2f7 16px);
  border: 1px dashed #cfd8e3; border-radius: var(--radius);
  padding: 40px 20px; text-align: center; color: var(--muted);
  min-height: 100px; display: flex; align-items: center; justify-content: center;
  margin: 32px 0;
}
.ad-slot-sidebar { padding: 60px 16px; }
.ad-label { font-size: 12px; letter-spacing: .08em; }

/* ===== Page hero (sub pages) ===== */
.page-hero {
  background: var(--accent-bg); padding: 40px 0; border-bottom: 1px solid var(--border);
}
.page-hero h1 { margin: 0 0 8px; color: var(--primary-dark); font-size: 28px; }
.page-hero p { margin: 0; color: var(--muted); }
.breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: 10px; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--primary); }

/* ===== Article single ===== */
.article-body {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 40px;
}
.article-body h1 { font-size: 28px; line-height: 1.4; margin: 0 0 16px; color: var(--primary-dark); }
.article-body .article-meta {
  color: var(--muted); font-size: 13px; margin-bottom: 24px;
  padding-bottom: 16px; border-bottom: 1px solid var(--border);
}
.article-body h2 {
  font-size: 22px; color: var(--primary-dark); margin: 32px 0 16px;
  padding-left: 14px; border-left: 4px solid var(--primary);
}
.article-body h3 { font-size: 18px; color: var(--primary-dark); margin: 24px 0 12px; }
.article-body p { margin: 0 0 16px; }
.article-body ul, .article-body ol { margin: 0 0 16px; padding-left: 24px; }
.article-body li { margin-bottom: 6px; }
.article-body blockquote {
  border-left: 4px solid var(--primary-light); background: var(--accent-bg);
  margin: 24px 0; padding: 16px 20px; color: var(--text); border-radius: 0 8px 8px 0;
}
.article-body table {
  width: 100%; border-collapse: collapse; margin: 20px 0;
}
.article-body th, .article-body td {
  border: 1px solid var(--border); padding: 10px 12px; text-align: left;
}
.article-body th { background: var(--accent-bg); color: var(--primary-dark); }

/* ===== Form ===== */
.form-wrap {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 32px;
}
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 14px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border);
  border-radius: var(--radius); font-size: 15px; font-family: inherit;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: 2px solid var(--primary-light); outline-offset: 1px; border-color: var(--primary);
}
.form-note { font-size: 13px; color: var(--muted); }

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark); color: #d8e4f2; margin-top: 80px;
}
.footer-inner {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding: 48px 20px;
}
.footer-brand .logo { color: var(--white); margin-bottom: 12px; }
.footer-brand .logo-mark { background: var(--white); color: var(--primary); }
.footer-brand p { font-size: 13px; color: #a8c3de; }
.footer-nav h4 { color: var(--white); font-size: 14px; margin: 0 0 14px; }
.footer-nav li { margin-bottom: 8px; }
.footer-nav a { color: #c4d7ee; font-size: 13px; }
.footer-nav a:hover { color: var(--white); }
.footer-copy {
  border-top: 1px solid #2a4a7a; padding: 18px 0; text-align: center;
  font-size: 12px; color: #93afce;
}

/* ===== Utility ===== */
.loading { color: var(--muted); font-size: 14px; }
.empty { color: var(--muted); font-size: 14px; padding: 32px; text-align: center; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.tag { background: var(--accent-bg); color: var(--primary); padding: 4px 10px; border-radius: 12px; font-size: 12px; }

/* ===== Filter bar ===== */
.filter-bar {
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; display: flex; gap: 12px; flex-wrap: wrap; align-items: center;
  margin-bottom: 24px;
}
.filter-bar label { font-size: 13px; font-weight: 600; margin-right: 6px; }
.filter-bar select {
  padding: 6px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px;
}

/* ===== Prefecture info ===== */
.pref-info {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 24px; margin-bottom: 24px;
}
.pref-info h3 { margin-top: 0; color: var(--primary-dark); }
.pref-info dl { display: grid; grid-template-columns: 140px 1fr; gap: 8px 16px; }
.pref-info dt { font-weight: 600; color: var(--primary-dark); }
.pref-info dd { margin: 0; }