/* ===== RESET & ROOT ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #1a3a5c;
  --primary-light: #2c5f8a;
  --accent: #e8943a;
  --accent-hover: #d17e28;
  --bg: #f5f7fa;
  --bg-white: #ffffff;
  --text: #333333;
  --text-light: #666666;
  --text-muted: #999999;
  --border: #e0e4e8;
  --radius: 8px;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-hover: 0 4px 20px rgba(0,0,0,0.14);
  --max-width: 1080px;
  --font: 'Noto Sans JP', 'Helvetica Neue', Arial, sans-serif;
}

html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.8; -webkit-font-smoothing: antialiased; }
a { color: var(--primary-light); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }

/* ===== HEADER ===== */
.site-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}
.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.site-logo { font-size: 1.2rem; font-weight: 700; color: #fff; letter-spacing: 0.02em; }
.site-logo span { color: var(--accent); }

.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 8px; z-index: 1100; }
.hamburger span { display: block; width: 24px; height: 2px; background: #fff; margin: 5px 0; transition: all 0.3s; border-radius: 2px; }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.global-nav ul { display: flex; list-style: none; gap: 4px; }
.global-nav a { color: rgba(255,255,255,0.85); font-size: 0.85rem; font-weight: 500; padding: 8px 12px; border-radius: var(--radius); transition: all 0.2s; white-space: nowrap; }
.global-nav a:hover, .global-nav a.current { background: rgba(255,255,255,0.15); color: #fff; }

/* ===== HERO ===== */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, #2a6496 50%, var(--primary-light) 100%);
  color: #fff;
  text-align: center;
  padding: 60px 20px 50px;
}
.hero h1 { font-size: 2rem; font-weight: 800; margin-bottom: 16px; line-height: 1.4; }
.hero h1 .highlight { color: var(--accent); }
.hero p { font-size: 1.05rem; opacity: 0.9; max-width: 640px; margin: 0 auto; }

/* ===== BREADCRUMB ===== */
.breadcrumb { max-width: var(--max-width); margin: 0 auto; padding: 12px 20px; font-size: 0.8rem; color: var(--text-muted); }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }

/* ===== LAYOUT ===== */
.content-wrap { max-width: var(--max-width); margin: 0 auto; padding: 30px 20px 60px; display: grid; grid-template-columns: 1fr 300px; gap: 36px; }
.main-content { min-width: 0; }

/* ===== ARTICLE ===== */
.article-section { background: var(--bg-white); border-radius: var(--radius); box-shadow: var(--shadow); padding: 36px; margin-bottom: 30px; }
.article-section h2 { font-size: 1.45rem; font-weight: 700; color: var(--primary); margin-bottom: 20px; padding-bottom: 12px; border-bottom: 3px solid var(--accent); }
.article-section h3 { font-size: 1.15rem; font-weight: 700; color: var(--primary); margin: 28px 0 12px; padding-left: 14px; border-left: 4px solid var(--accent); }
.article-section p { margin-bottom: 16px; }
.article-section ul, .article-section ol { margin: 12px 0 20px 24px; }
.article-section li { margin-bottom: 8px; }
.article-meta { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 20px; display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== TOC ===== */
.toc { background: #f7f9fc; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 24px; margin-bottom: 28px; }
.toc h4 { font-size: 0.95rem; font-weight: 700; color: var(--primary); margin-bottom: 12px; }
.toc ol { margin: 0 0 0 20px; }
.toc li { margin-bottom: 6px; font-size: 0.9rem; }
.toc a { color: var(--text); }
.toc a:hover { color: var(--accent); }

/* ===== RANKING ===== */
.ranking-item {
  display: flex;
  gap: 20px;
  background: var(--bg-white);
  border-radius: var(--radius);
  border: 2px solid var(--border);
  padding: 24px;
  margin-bottom: 20px;
  align-items: flex-start;
  transition: box-shadow 0.25s;
}
.ranking-item:hover { box-shadow: var(--shadow-hover); }
.rank-1 { border-color: #e8943a; background: #fffbf7; }
.rank-2 { border-color: #a8a8ad; }
.rank-3 { border-color: #cd7f32; }
.ranking-badge { flex-shrink: 0; width: 48px; height: 48px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; font-weight: 800; color: #fff; }
.rank-1 .ranking-badge { background: linear-gradient(135deg, #f5a623, #e8943a); }
.rank-2 .ranking-badge { background: linear-gradient(135deg, #8e8e93, #a8a8ad); }
.rank-3 .ranking-badge { background: linear-gradient(135deg, #cd7f32, #b8722e); }
.rank-other .ranking-badge { background: var(--primary-light); }
.ranking-body { flex: 1; min-width: 0; }
.ranking-body h3 { font-size: 1.05rem; color: var(--primary); margin-bottom: 6px; border: none; padding: 0; margin-top: 0; }
.ranking-body p { font-size: 0.9rem; color: var(--text-light); margin-bottom: 8px; }
.tagline { font-weight: 600; color: var(--text) !important; font-size: 0.92rem !important; }
.ranking-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.ranking-tags span { font-size: 0.72rem; background: #eef2f7; color: var(--primary-light); padding: 3px 10px; border-radius: 20px; font-weight: 500; }

/* ===== CARDS ===== */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; margin: 24px 0; }
.card { background: var(--bg-white); border-radius: var(--radius); box-shadow: var(--shadow); padding: 28px 24px; transition: box-shadow 0.25s, transform 0.25s; border-top: 4px solid var(--accent); }
.card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.card h3 { font-size: 1.1rem; color: var(--primary); margin-bottom: 10px; border: none; padding: 0; }
.card-tag { display: inline-block; background: var(--accent); color: #fff; font-size: 0.72rem; font-weight: 700; padding: 3px 10px; border-radius: 20px; margin-bottom: 12px; }
.card p { font-size: 0.92rem; color: var(--text-light); margin-bottom: 14px; }
.card-link { font-size: 0.88rem; font-weight: 600; color: var(--accent); }
.card-link:hover { text-decoration: underline; }

/* ===== TABLE ===== */
.compare-table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 0.92rem; }
.compare-table th, .compare-table td { padding: 14px 16px; border: 1px solid var(--border); text-align: left; vertical-align: top; }
.compare-table th { background: var(--primary); color: #fff; font-weight: 600; white-space: nowrap; }
.compare-table th:first-child { background: #1c3d5e; }
.compare-table tr:nth-child(even) { background: #f9fafb; }
.compare-table td:first-child { font-weight: 600; color: var(--primary); }
.compare-table .check { color: #22c55e; font-weight: 700; }
.compare-table .cross { color: #ef4444; }
.table-wrap { overflow-x: auto; }

/* ===== BOXES ===== */
.highlight-box { background: linear-gradient(135deg, #fff8ef, #fef3e2); border: 1px solid #f0d9b5; border-left: 5px solid var(--accent); border-radius: var(--radius); padding: 24px; margin: 24px 0; }
.highlight-box h4 { color: var(--accent-hover); margin-bottom: 8px; font-size: 1rem; }
.highlight-box p { margin-bottom: 8px; font-size: 0.95rem; }
.info-box { background: #eef4fb; border-left: 5px solid var(--primary-light); border-radius: var(--radius); padding: 20px 24px; margin: 24px 0; }
.info-box p { font-size: 0.92rem; color: var(--text); margin: 0; }

/* ===== SIDEBAR ===== */
.sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-widget { background: var(--bg-white); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; }
.sidebar-widget h4 { font-size: 0.95rem; font-weight: 700; color: var(--primary); margin-bottom: 14px; padding-bottom: 10px; border-bottom: 2px solid var(--border); }
.sidebar-widget ul { list-style: none; }
.sidebar-widget li { margin-bottom: 10px; }
.sidebar-widget a { font-size: 0.88rem; color: var(--text); display: block; padding: 6px 0; border-bottom: 1px solid #f0f0f0; transition: all 0.2s; }
.sidebar-widget a:hover { color: var(--accent); padding-left: 8px; }

/* ===== AD ===== */
.ad-unit { min-height: 90px; margin: 24px 0; text-align: center; overflow: hidden; }

/* ===== FAQ ===== */
.faq-item { background: var(--bg-white); border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 12px; overflow: hidden; }
.faq-question { width: 100%; background: none; border: none; padding: 20px 24px; text-align: left; font-size: 1rem; font-weight: 600; color: var(--primary); cursor: pointer; display: flex; align-items: center; justify-content: space-between; transition: background 0.2s; font-family: var(--font); }
.faq-question:hover { background: #f7f9fc; }
.faq-question::after { content: '+'; font-size: 1.4rem; font-weight: 300; color: var(--accent); }
.faq-item.open .faq-question::after { content: '−'; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-answer-inner { padding: 0 24px 20px; font-size: 0.94rem; color: var(--text-light); line-height: 1.8; }

/* ===== CTA ===== */
.cta-btn { display: inline-block; background: linear-gradient(135deg, var(--accent), var(--accent-hover)); color: #fff; font-weight: 700; font-size: 1rem; padding: 14px 36px; border-radius: 50px; text-align: center; transition: all 0.3s; box-shadow: 0 4px 12px rgba(232,148,58,0.3); }
.cta-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(232,148,58,0.4); color: #fff; }
.cta-btn-sm { font-size: 0.88rem; padding: 10px 24px; }

/* ===== FOOTER ===== */
.site-footer { background: var(--primary); color: rgba(255,255,255,0.7); text-align: center; padding: 32px 20px; font-size: 0.82rem; }
.site-footer a { color: rgba(255,255,255,0.85); }
.site-footer a:hover { color: var(--accent); }
.footer-links { display: flex; justify-content: center; gap: 24px; margin-bottom: 16px; flex-wrap: wrap; }

/* ===== SINGLE COL ===== */
.content-wrap.single-col { grid-template-columns: 1fr; max-width: 780px; }

/* ===== UTILS ===== */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px; }
.mb-20 { margin-bottom: 20px; }
.mb-30 { margin-bottom: 30px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 860px) {
  .content-wrap { grid-template-columns: 1fr; }
  .hamburger { display: block; }
  .global-nav {
    position: fixed; top: 0; right: -280px; width: 280px; height: 100vh;
    background: var(--primary); padding: 80px 24px 24px;
    transition: right 0.3s ease; z-index: 1050;
    box-shadow: -4px 0 20px rgba(0,0,0,0.2);
  }
  .global-nav.open { right: 0; }
  .global-nav ul { flex-direction: column; gap: 0; }
  .global-nav a { display: block; padding: 14px 0; font-size: 0.95rem; border-bottom: 1px solid rgba(255,255,255,0.1); border-radius: 0; }
  .overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 1040; }
  .overlay.active { display: block; }
  .hero h1 { font-size: 1.5rem; }
  .article-section { padding: 24px 18px; }
  .ranking-item { flex-direction: column; align-items: flex-start; }
  .compare-table { font-size: 0.8rem; }
  .compare-table th, .compare-table td { padding: 10px 8px; }
}