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

:root {
  --blue-900: #1e3a5f;
  --blue-700: #1a56db;
  --blue-600: #1d6cf5;
  --blue-500: #3b82f6;
  --blue-100: #dbeafe;
  --blue-50:  #eff6ff;
  --gray-900: #111827;
  --gray-700: #374151;
  --gray-500: #6b7280;
  --gray-300: #d1d5db;
  --gray-100: #f3f4f6;
  --white:    #ffffff;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.12);
  --transition: .2s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Hiragino Sans', 'Meiryo', 'Noto Sans JP', system-ui, sans-serif;
  color: var(--gray-700);
  background: var(--white);
  line-height: 1.7;
  font-size: 15px;
}

img { display: block; max-width: 100%; height: auto; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* =========================================
   Utility
   ========================================= */
.container { max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

.tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .05em;
  padding: 3px 10px;
  border-radius: 100px;
  background: var(--blue-100);
  color: var(--blue-700);
}
.tag.beauty  { background: #fce7f3; color: #be185d; }
.tag.health  { background: #d1fae5; color: #065f46; }
.tag.medical { background: var(--blue-100); color: var(--blue-700); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 11px 26px;
  border-radius: 100px;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}
.btn-primary { background: var(--blue-700); color: var(--white); }
.btn-primary:hover { background: var(--blue-900); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-outline { background: transparent; color: var(--blue-700); border: 2px solid var(--blue-700); }
.btn-outline:hover { background: var(--blue-700); color: var(--white); }

.section-heading {
  font-size: 22px;
  font-weight: 800;
  color: var(--gray-900);
  position: relative;
  padding-left: 14px;
}
.section-heading::before {
  content: '';
  position: absolute;
  left: 0; top: 2px; bottom: 2px;
  width: 4px;
  background: var(--blue-600);
  border-radius: 2px;
}

/* =========================================
   Header / Nav
   ========================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--gray-300);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  height: 64px;
  gap: 32px;
}
.site-logo {
  font-size: 20px;
  font-weight: 900;
  color: var(--blue-700);
  flex-shrink: 0;
  letter-spacing: -.02em;
}
.site-logo span { color: var(--gray-900); }

.global-nav { display: flex; gap: 4px; flex: 1; }
.global-nav a {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  transition: var(--transition);
}
.global-nav a:hover, .global-nav a.active { color: var(--blue-700); background: var(--blue-50); }

.header-search {
  display: flex;
  align-items: center;
  background: var(--gray-100);
  border-radius: 100px;
  padding: 0 16px;
  gap: 8px;
  height: 38px;
}
.header-search input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 14px;
  width: 180px;
  color: var(--gray-700);
}
.header-search svg { color: var(--gray-500); flex-shrink: 0; }

.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 8px; }

/* =========================================
   Hero
   ========================================= */
.hero {
  background: linear-gradient(135deg, var(--blue-900) 0%, #1a56db 55%, #3b82f6 100%);
  padding: 72px 0 64px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  right: -60px; bottom: -60px;
  width: 400px; height: 400px;
  background: rgba(255,255,255,.05);
  border-radius: 50%;
}
.hero-inner { position: relative; z-index: 1; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,.15);
  color: #bfdbfe;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  color: var(--white);
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -.02em;
}
.hero-sub {
  color: #bfdbfe;
  font-size: 16px;
  max-width: 520px;
  margin-bottom: 36px;
}
.hero-search-bar {
  display: flex;
  max-width: 560px;
  background: var(--white);
  border-radius: 100px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,.2);
}
.hero-search-bar input {
  flex: 1;
  border: none;
  outline: none;
  padding: 0 24px;
  font-size: 15px;
  color: var(--gray-700);
}
.hero-search-bar button {
  background: var(--blue-600);
  color: var(--white);
  border: none;
  padding: 14px 28px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  font-size: 14px;
}
.hero-search-bar button:hover { background: var(--blue-900); }
.hero-tags { margin-top: 20px; display: flex; gap: 8px; flex-wrap: wrap; }
.hero-tag {
  background: rgba(255,255,255,.15);
  color: #bfdbfe;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 100px;
  cursor: pointer;
  transition: var(--transition);
}
.hero-tag:hover { background: rgba(255,255,255,.28); color: var(--white); }

/* =========================================
   Stats Bar
   ========================================= */
.stats-bar {
  background: var(--blue-50);
  border-bottom: 1px solid var(--blue-100);
  padding: 14px 0;
}
.stats-inner { display: flex; gap: 40px; align-items: center; }
.stat-item { display: flex; align-items: center; gap: 8px; }
.stat-num { font-size: 20px; font-weight: 900; color: var(--blue-700); }
.stat-label { font-size: 12px; color: var(--gray-500); }

/* =========================================
   Category Nav
   ========================================= */
.category-nav { padding: 32px 0 0; }
.category-nav-inner { display: flex; gap: 12px; overflow-x: auto; padding-bottom: 0; }
.cat-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid var(--gray-300);
  background: var(--white);
  color: var(--gray-700);
  transition: var(--transition);
}
.cat-btn:hover, .cat-btn.active {
  border-color: var(--blue-600);
  background: var(--blue-600);
  color: var(--white);
}
.cat-icon { font-size: 16px; }

/* =========================================
   Featured Articles
   ========================================= */
.section { padding: 56px 0; }
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}
.view-all {
  font-size: 13px;
  font-weight: 700;
  color: var(--blue-600);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}
.view-all:hover { gap: 8px; }

/* Featured large card */
.featured-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 24px;
}
.card-featured {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--gray-100);
  aspect-ratio: 16/10;
  display: flex;
  align-items: flex-end;
}
.card-featured .card-img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}
.card-featured .card-body {
  position: relative;
  z-index: 1;
  padding: 24px;
  background: linear-gradient(to top, rgba(0,0,0,.75) 0%, transparent 100%);
  width: 100%;
}
.card-featured .card-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--white);
  line-height: 1.4;
  margin: 8px 0 10px;
}
.card-featured .card-meta { color: rgba(255,255,255,.7); font-size: 12px; }

.featured-side { display: flex; flex-direction: column; gap: 16px; }

/* Standard card */
.card {
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-300);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--blue-100); }

.card-thumb {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--gray-100);
}
.card-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.card:hover .card-thumb img { transform: scale(1.04); }

.card-body { padding: 16px; flex: 1; display: flex; flex-direction: column; gap: 8px; }
.card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-excerpt {
  font-size: 13px;
  color: var(--gray-500);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.6;
}
.card-meta { font-size: 12px; color: var(--gray-500); display: flex; align-items: center; gap: 12px; margin-top: auto; }
.card-meta svg { flex-shrink: 0; }

/* Card horizontal */
.card-h {
  display: flex;
  gap: 14px;
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-300);
  padding: 14px;
  transition: var(--transition);
  align-items: flex-start;
}
.card-h:hover { border-color: var(--blue-100); box-shadow: var(--shadow-md); }
.card-h .card-thumb { width: 100px; aspect-ratio: 4/3; border-radius: var(--radius-sm); flex-shrink: 0; }
.card-h .card-body { padding: 0; }
.card-h .card-title { font-size: 14px; -webkit-line-clamp: 3; }

/* Articles Grid 3col */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* =========================================
   Placeholder Images (SVG-based)
   ========================================= */
.img-placeholder {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
}
.img-placeholder.blue   { background: linear-gradient(135deg, #dbeafe, #93c5fd); }
.img-placeholder.green  { background: linear-gradient(135deg, #d1fae5, #6ee7b7); }
.img-placeholder.pink   { background: linear-gradient(135deg, #fce7f3, #f9a8d4); }
.img-placeholder.indigo { background: linear-gradient(135deg, #e0e7ff, #a5b4fc); }

/* =========================================
   Ranking Section
   ========================================= */
.ranking-list { display: flex; flex-direction: column; gap: 12px; }
.rank-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px;
  background: var(--white);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.rank-item:hover { border-color: var(--blue-100); box-shadow: var(--shadow-sm); }
.rank-num {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--blue-100);
  color: var(--blue-700);
  font-size: 15px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.rank-item:nth-child(1) .rank-num { background: #fef3c7; color: #b45309; }
.rank-item:nth-child(2) .rank-num { background: var(--gray-100); color: var(--gray-700); }
.rank-item:nth-child(3) .rank-num { background: #fef3c7; color: #92400e; }
.rank-title { font-size: 14px; font-weight: 600; color: var(--gray-900); line-height: 1.5; }
.rank-meta  { font-size: 12px; color: var(--gray-500); margin-top: 4px; }

/* =========================================
   Two-col Layout (list page, article page)
   ========================================= */
.page-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  padding: 40px 0 64px;
  align-items: start;
}
.sidebar { position: sticky; top: 80px; display: flex; flex-direction: column; gap: 24px; }
.sidebar-widget {
  background: var(--white);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.widget-head {
  padding: 14px 18px;
  background: var(--blue-50);
  border-bottom: 1px solid var(--blue-100);
  font-size: 14px;
  font-weight: 800;
  color: var(--blue-900);
}
.widget-body { padding: 16px 18px; }

.sidebar-cat-list { display: flex; flex-direction: column; gap: 4px; }
.sidebar-cat-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--gray-700);
  transition: var(--transition);
}
.sidebar-cat-list a:hover { background: var(--blue-50); color: var(--blue-700); }
.sidebar-cat-list .count {
  background: var(--gray-100);
  color: var(--gray-500);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 100px;
}

/* =========================================
   Breadcrumb
   ========================================= */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 16px 0;
  font-size: 12px;
  color: var(--gray-500);
}
.breadcrumb a { color: var(--blue-600); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb .sep { color: var(--gray-300); }

/* =========================================
   Article Page
   ========================================= */
.article-header { margin-bottom: 28px; }
.article-header .tag { margin-bottom: 12px; }
.article-header h1 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 900;
  color: var(--gray-900);
  line-height: 1.4;
  letter-spacing: -.02em;
  margin-bottom: 16px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 13px;
  color: var(--gray-500);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--gray-300);
  margin-bottom: 24px;
}
.meta-author { display: flex; align-items: center; gap: 8px; }
.author-avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--blue-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}
.author-name { font-weight: 600; color: var(--gray-700); }

.article-eyecatch {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 32px;
  aspect-ratio: 16/7;
  background: var(--gray-100);
}
.article-eyecatch .img-placeholder { font-size: 64px; }

.article-content h2 {
  font-size: 20px;
  font-weight: 800;
  color: var(--gray-900);
  margin: 36px 0 14px;
  padding: 12px 18px;
  background: var(--blue-50);
  border-left: 4px solid var(--blue-600);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.article-content h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--gray-900);
  margin: 28px 0 10px;
}
.article-content p { margin-bottom: 18px; line-height: 1.85; color: var(--gray-700); }
.article-content ul, .article-content ol { margin: 0 0 18px 20px; }
.article-content li { margin-bottom: 8px; line-height: 1.7; }

.article-content .info-box {
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 24px 0;
}
.article-content .info-box .box-title {
  font-size: 14px;
  font-weight: 800;
  color: var(--blue-700);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-tags { display: flex; gap: 8px; flex-wrap: wrap; margin: 32px 0; padding-top: 24px; border-top: 1px solid var(--gray-300); }

/* SNS share */
.share-bar { margin: 32px 0; padding: 24px; background: var(--gray-100); border-radius: var(--radius-md); text-align: center; }
.share-bar p { font-size: 14px; font-weight: 700; color: var(--gray-700); margin-bottom: 14px; }
.share-btns { display: flex; gap: 10px; justify-content: center; }
.share-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 9px 20px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}
.share-btn.twitter { background: #1da1f2; color: var(--white); }
.share-btn.line    { background: #06c755; color: var(--white); }
.share-btn.copy    { background: var(--gray-700); color: var(--white); }
.share-btn:hover   { opacity: .85; }

/* =========================================
   Pagination
   ========================================= */
.pagination { display: flex; justify-content: center; align-items: center; gap: 6px; margin-top: 40px; }
.page-btn {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--gray-300);
  background: var(--white);
  color: var(--gray-700);
  cursor: pointer;
  transition: var(--transition);
}
.page-btn:hover, .page-btn.active { background: var(--blue-600); color: var(--white); border-color: var(--blue-600); }
.page-btn.disabled { opacity: .4; cursor: not-allowed; }

/* =========================================
   Contact Page
   ========================================= */
.contact-wrap {
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 0 80px;
}
.contact-intro {
  text-align: center;
  margin-bottom: 40px;
}
.contact-intro h1 { font-size: 28px; font-weight: 900; color: var(--gray-900); margin-bottom: 12px; }
.contact-intro p  { color: var(--gray-500); font-size: 15px; }

.contact-form {
  background: var(--white);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.form-group { margin-bottom: 22px; }
.form-label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--gray-700);
  margin-bottom: 8px;
}
.required {
  background: #fee2e2;
  color: #dc2626;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 100px;
  margin-left: 6px;
  vertical-align: middle;
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--gray-700);
  font-family: inherit;
  transition: var(--transition);
  background: var(--white);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(59,130,246,.15);
}
.form-textarea { resize: vertical; min-height: 140px; }
.form-select { cursor: pointer; }
.form-note { font-size: 12px; color: var(--gray-500); margin-top: 5px; }
.form-checkbox { display: flex; align-items: flex-start; gap: 10px; }
.form-checkbox input { width: 18px; height: 18px; margin-top: 2px; cursor: pointer; accent-color: var(--blue-600); }
.form-checkbox label { font-size: 14px; color: var(--gray-700); cursor: pointer; }
.form-checkbox a { color: var(--blue-600); text-decoration: underline; }
.form-submit { text-align: center; margin-top: 28px; }
.form-submit .btn { padding: 14px 48px; font-size: 16px; }

/* =========================================
   Footer
   ========================================= */
.site-footer {
  background: var(--blue-900);
  color: rgba(255,255,255,.7);
  padding: 56px 0 0;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand .site-logo { color: var(--white); font-size: 22px; margin-bottom: 12px; }
.footer-brand p { font-size: 13px; line-height: 1.8; }
.footer-col h4 { font-size: 14px; font-weight: 800; color: var(--white); margin-bottom: 14px; }
.footer-col ul { display: flex; flex-direction: column; gap: 8px; }
.footer-col li a { font-size: 13px; transition: var(--transition); }
.footer-col li a:hover { color: var(--white); }
.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
}
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a:hover { color: var(--white); }

/* =========================================
   Page Hero (inner pages)
   ========================================= */
.page-hero {
  background: linear-gradient(135deg, var(--blue-900), #1a56db);
  padding: 40px 0;
  color: var(--white);
}
.page-hero h1 { font-size: 26px; font-weight: 900; margin-bottom: 6px; }
.page-hero p  { color: #bfdbfe; font-size: 14px; }

/* =========================================
   Related Articles
   ========================================= */
.related-section { margin-top: 48px; padding-top: 40px; border-top: 1px solid var(--gray-300); }
.related-section .section-heading { margin-bottom: 20px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

/* =========================================
   Responsive
   ========================================= */
@media (max-width: 900px) {
  .featured-grid       { grid-template-columns: 1fr; }
  .articles-grid       { grid-template-columns: repeat(2, 1fr); }
  .page-layout         { grid-template-columns: 1fr; }
  .sidebar             { position: static; }
  .footer-inner        { grid-template-columns: 1fr 1fr; gap: 32px; }
  .related-grid        { grid-template-columns: repeat(2, 1fr); }
  .stats-inner         { gap: 24px; flex-wrap: wrap; }
}

@media (max-width: 640px) {
  .articles-grid       { grid-template-columns: 1fr; }
  .related-grid        { grid-template-columns: 1fr; }
  .footer-inner        { grid-template-columns: 1fr; }
  .header-search       { display: none; }
  .hamburger           { display: flex; }
  .global-nav          { display: none; }
  .hero                { padding: 48px 0 40px; }
  .section             { padding: 40px 0; }
  .contact-form        { padding: 24px 20px; }
  .share-btns          { flex-wrap: wrap; }
  .footer-bottom       { flex-direction: column; gap: 10px; text-align: center; }
  .category-nav-inner  { gap: 8px; }
  .cat-btn             { padding: 8px 14px; font-size: 12px; }
}