:root {
  --primary: #0B6E4F;
  --primary-dark: #084A36;
  --primary-light: #E6F5EF;
  --accent: #1A8FCE;
  --accent-light: #EAF5FC;
  --warm: #E8673C;
  --warm-light: #FFF1EB;
  --purple: #6C5CE7;
  --purple-light: #F0EDFF;
  --gold: #D4A024;
  --gold-light: #FFF9E6;
  --text: #1E293B;
  --text-light: #475569;
  --text-muted: #94A3B8;
  --bg: #FFFFFF;
  --bg-soft: #F8FAFB;
  --bg-warm: #FDFAF7;
  --bg-dark: #0F1923;
  --border: #E2E8F0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.1);
  --radius: 8px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --max-width: 1160px;
  --header-height: 68px;
  --font-sans: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
}

*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--text);
  line-height: 1.8;
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* ===== HEADER ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--header-height);
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  display: flex; align-items: center;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
}
.site-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.05rem; font-weight: 700; color: var(--primary);
}
.logo-mark {
  width: 34px; height: 34px; border-radius: 8px;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem; font-weight: 800; letter-spacing: -0.5px;
}
.logo-sub { font-size: 0.7rem; font-weight: 400; color: var(--text-muted); margin-left: 2px; }

.nav-main { display: flex; align-items: center; gap: 28px; }
.nav-main a { color: var(--text-light); font-size: 0.85rem; font-weight: 500; position: relative; }
.nav-main a::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 2px; background: var(--primary); transition: width 0.3s;
}
.nav-main a:hover { color: var(--primary); }
.nav-main a:hover::after { width: 100%; }
.nav-cta {
  background: var(--primary) !important; color: #fff !important;
  padding: 9px 22px; border-radius: 7px; font-weight: 600; font-size: 0.82rem;
  transition: all 0.2s;
}
.nav-cta:hover { background: var(--primary-dark) !important; color: #fff !important; transform: translateY(-1px); }
.nav-cta::after { display: none !important; }
.mobile-menu-btn { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.mobile-menu-btn span { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; transition: 0.3s; }

/* ===== HERO ===== */
.hero {
  padding: 130px 0 72px;
  background: linear-gradient(170deg, var(--primary-light) 0%, var(--bg) 50%, var(--bg-warm) 100%);
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -30%; right: -10%; width: 50%; height: 160%;
  background: radial-gradient(circle, rgba(11,110,79,0.04) 0%, transparent 65%);
  pointer-events: none;
}
.hero-inner {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
}
.hero-content { max-width: 520px; }
.hero h1 {
  font-size: 2.1rem; font-weight: 800; line-height: 1.5;
  margin-bottom: 18px; color: var(--text);
}
.hero h1 em { font-style: normal; color: var(--primary); }
.hero-desc {
  font-size: 0.95rem; color: var(--text-light);
  margin-bottom: 32px; line-height: 1.9;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* hero right - insight showcase */
.hero-showcase {
  display: flex; flex-direction: column; gap: 14px;
}
.showcase-card {
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--bg); border-radius: var(--radius-lg);
  padding: 18px 20px; border: 1px solid var(--border);
  box-shadow: var(--shadow-sm); transition: all 0.3s;
}
.showcase-card:hover { box-shadow: var(--shadow-md); transform: translateX(4px); }
.showcase-icon {
  width: 44px; height: 44px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; flex-shrink: 0;
}
.showcase-icon.green { background: var(--primary-light); }
.showcase-icon.blue { background: var(--accent-light); }
.showcase-icon.orange { background: var(--warm-light); }
.showcase-icon.purple { background: var(--purple-light); }
.showcase-text h4 { font-size: 0.82rem; font-weight: 700; line-height: 1.4; margin-bottom: 2px; }
.showcase-text p { font-size: 0.72rem; color: var(--text-muted); line-height: 1.5; }
.showcase-text .tag { font-size: 0.62rem; font-weight: 600; color: var(--primary); margin-top: 4px; display: inline-block; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px; border-radius: 8px;
  font-weight: 600; font-size: 0.9rem;
  transition: all 0.25s; cursor: pointer; border: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline { background: var(--bg); color: var(--text); border: 1.5px solid var(--border); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--primary); }
.btn-white:hover { background: #f5f5f5; color: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-sm { padding: 9px 20px; font-size: 0.82rem; }

/* ===== SECTIONS ===== */
.section { padding: 80px 0; }
.section-soft { background: var(--bg-soft); }
.section-green { background: var(--primary); color: #fff; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-label {
  display: inline-block; font-size: 0.68rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 2px;
  color: var(--primary); background: var(--primary-light);
  padding: 5px 14px; border-radius: 20px; margin-bottom: 14px;
}
.section-green .section-label { background: rgba(255,255,255,0.15); color: #fff; }
.section-header h2 { font-size: 1.7rem; font-weight: 800; margin-bottom: 10px; }
.section-header p { color: var(--text-light); font-size: 0.92rem; max-width: 580px; margin: 0 auto; line-height: 1.8; }
.section-green .section-header h2 { color: #fff; }
.section-green .section-header p { color: rgba(255,255,255,0.7); }

/* ===== STRENGTH NUMBERS ===== */
.strength-bar {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  padding: 36px 0;
}
.strength-item { text-align: center; }
.strength-num {
  font-size: 2.2rem; font-weight: 800; color: var(--primary); line-height: 1;
  margin-bottom: 6px;
}
.strength-num span { font-size: 0.85rem; font-weight: 600; }
.strength-desc { font-size: 0.75rem; color: var(--text-muted); font-weight: 500; }

/* ===== FEATURES ===== */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  background: rgba(255,255,255,0.08); border-radius: var(--radius-lg); padding: 32px 24px;
  border: 1px solid rgba(255,255,255,0.1); transition: all 0.3s;
}
.section:not(.section-green) .feature-card {
  background: var(--bg); border: 1px solid var(--border); box-shadow: var(--shadow-sm);
}
.feature-card:hover { transform: translateY(-4px); }
.section-green .feature-card:hover { background: rgba(255,255,255,0.12); }
.section:not(.section-green) .feature-card:hover { box-shadow: var(--shadow-md); }
.feature-icon {
  width: 48px; height: 48px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px; font-size: 1.3rem;
}
.section-green .feature-icon { background: rgba(255,255,255,0.12); }
.section:not(.section-green) .feature-icon { background: var(--primary-light); }
.feature-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.section-green .feature-card h3 { color: #fff; }
.feature-card p { font-size: 0.85rem; color: var(--text-light); line-height: 1.7; }
.section-green .feature-card p { color: rgba(255,255,255,0.65); }

/* ===== ARTICLE CARDS ===== */
.articles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.article-card {
  background: var(--bg); border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border); transition: all 0.3s;
}
.article-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; }
.article-card-thumb { width: 100%; height: 170px; position: relative; overflow: hidden; }
.article-card-body { padding: 18px 20px; }
.article-card-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.category-badge {
  display: inline-block; font-size: 0.65rem; font-weight: 700;
  padding: 3px 9px; border-radius: 4px;
}
.category-badge.industry { background: var(--primary-light); color: var(--primary); }
.category-badge.company { background: var(--accent-light); color: var(--accent); }
.category-badge.career { background: var(--warm-light); color: var(--warm); }
.category-badge.digital { background: var(--purple-light); color: var(--purple); }
.category-badge.interview { background: var(--gold-light); color: var(--gold); }
.article-card-date { font-size: 0.72rem; color: var(--text-muted); }
.article-card-body h3 {
  font-size: 0.9rem; font-weight: 600; line-height: 1.55; margin-bottom: 6px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.article-card-body p {
  font-size: 0.78rem; color: var(--text-muted); line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

/* ===== CATEGORY TABS ===== */
.category-tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 28px; justify-content: center; }
.category-tab {
  padding: 7px 18px; border-radius: 20px; font-size: 0.8rem; font-weight: 600;
  border: 1px solid var(--border); background: var(--bg); cursor: pointer;
  transition: all 0.2s; color: var(--text-muted);
}
.category-tab:hover, .category-tab.active {
  background: var(--primary); color: #fff; border-color: var(--primary);
}

/* ===== CTA SECTION ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 72px 0; text-align: center; color: #fff;
}
.cta-section h2 { font-size: 1.5rem; margin-bottom: 10px; color: #fff; font-weight: 700; }
.cta-section p { font-size: 0.9rem; color: rgba(255,255,255,0.7); margin-bottom: 28px; }

/* ===== FOOTER ===== */
.site-footer { background: var(--bg-dark); color: #ccc; padding: 56px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 36px; margin-bottom: 36px; }
.footer-brand { font-size: 1rem; font-weight: 700; color: #fff; margin-bottom: 10px; }
.footer-desc { font-size: 0.8rem; line-height: 1.7; color: rgba(255,255,255,0.35); }
.footer-nav h4 { font-size: 0.72rem; font-weight: 700; color: rgba(255,255,255,0.5); margin-bottom: 14px; text-transform: uppercase; letter-spacing: 1px; }
.footer-nav ul { list-style: none; }
.footer-nav li { margin-bottom: 7px; }
.footer-nav a { color: rgba(255,255,255,0.35); font-size: 0.8rem; }
.footer-nav a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 20px; text-align: center; font-size: 0.72rem; color: rgba(255,255,255,0.2); }

/* ===== BREADCRUMB ===== */
.breadcrumb { padding: 16px 0; font-size: 0.78rem; color: var(--text-muted); }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { margin: 0 8px; opacity: 0.5; }

/* ===== ARTICLE PAGE ===== */
.article-header { padding: 120px 0 40px; background: var(--bg-soft); }
.article-header h1 { font-size: 1.9rem; font-weight: 800; line-height: 1.5; margin-bottom: 16px; max-width: 800px; }
.article-meta { display: flex; align-items: center; gap: 16px; color: var(--text-muted); font-size: 0.82rem; }
.article-content { max-width: 760px; margin: 0 auto; padding: 48px 24px; }
.article-content h2 {
  font-size: 1.3rem; font-weight: 800; margin: 48px 0 16px;
  padding-bottom: 10px; border-bottom: 2px solid var(--primary-light);
}
.article-content h3 { font-size: 1.08rem; font-weight: 700; margin: 32px 0 12px; }
.article-content p { margin-bottom: 20px; color: var(--text-light); }
.article-content ul, .article-content ol { margin-bottom: 20px; padding-left: 24px; }
.article-content li { margin-bottom: 8px; color: var(--text-light); }
.article-toc {
  background: var(--bg-soft); border-radius: var(--radius-lg);
  padding: 24px 28px; margin-bottom: 40px; border: 1px solid var(--border);
}
.article-toc h4 { font-size: 0.85rem; font-weight: 700; margin-bottom: 12px; }
.article-toc ul { list-style: none; padding: 0; }
.article-toc li { margin-bottom: 8px; }
.article-toc a { font-size: 0.83rem; color: var(--text-light); }
.article-toc a:hover { color: var(--primary); }
.related-articles { padding: 60px 0; background: var(--bg-soft); }

/* ===== CONTACT FORM ===== */
.contact-form { max-width: 600px; margin: 0 auto; }
.form-group { margin-bottom: 24px; }
.form-group label { display: block; font-size: 0.82rem; font-weight: 700; margin-bottom: 8px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 16px; border: 1px solid var(--border); border-radius: var(--radius);
  font-size: 0.92rem; font-family: var(--font-sans); transition: border-color 0.2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(11,110,79,0.08);
}
.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 24px;
  margin-top: 6px;
}
.checkbox-label {
  display: flex !important;
  align-items: center;
  gap: 10px;
  font-weight: 400 !important;
  font-size: 0.9rem !important;
  cursor: pointer;
  white-space: nowrap;
  margin-bottom: 0 !important;
}
.checkbox-label input[type="checkbox"] {
  width: 18px !important;
  min-width: 18px;
  height: 18px;
  padding: 0 !important;
  margin: 0;
  accent-color: var(--primary);
  cursor: pointer;
}
.checkbox-label span {
  line-height: 1.4;
}
@media (max-width: 480px) {
  .checkbox-grid { grid-template-columns: 1fr; gap: 8px; }
}

/* Article Listing */
.articles-listing { padding: 120px 0 80px; }

/* Section more */
.section-more { text-align: center; margin-top: 36px; }
.section-more a {
  font-weight: 600; font-size: 0.85rem; color: var(--primary);
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 24px; border-radius: 8px; border: 1px solid var(--border);
  transition: all 0.2s;
}
.section-more a:hover { border-color: var(--primary); background: var(--primary-light); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav-main { display: none; }
  .mobile-menu-btn { display: block; }
  .hero { padding: 100px 0 60px; }
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .hero h1 { font-size: 1.6rem; }
  .strength-bar { grid-template-columns: repeat(2, 1fr); }
  .features-grid, .articles-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 20px; }
  .article-header h1 { font-size: 1.35rem; }
  .section-header h2 { font-size: 1.35rem; }
}
@media (max-width: 1024px) and (min-width: 769px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}