/*
Theme Name: Jitalog Theme
Theme URI: https://jitalog.com
Author: Jitalog Team
Description: 時短サービス比較ブログ「ジタログ」専用テーマ。SEO最適化・アフィリエイト機能・高速表示に特化。
Version: 1.0.0
Text Domain: jitalog
*/

/* ============================================
   CSS Variables - Design System
   ============================================ */
:root {
  /* Brand Colors - Natural & Warm */
  --color-primary: #2D9D78;
  --color-primary-dark: #247D60;
  --color-primary-light: #E6F5EF;
  --color-accent: #E8915A;
  --color-accent-dark: #D07840;
  --color-success: #2D9D78;
  --color-danger: #E05252;

  /* Neutral Colors - Warm Tint */
  --color-text: #2C2C2C;
  --color-text-light: #5F6368;
  --color-text-muted: #9AA0A6;
  --color-bg: #FFFFFF;
  --color-bg-gray: #FAFAF7;
  --color-bg-dark: #F2F1ED;
  --color-border: #E8E6E1;
  --color-border-light: #F2F1ED;

  /* Typography */
  --font-sans: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Noto Sans JP', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Layout */
  --content-width: 780px;
  --site-width: 1140px;
  --sidebar-width: 320px;
  --border-radius: 8px;
  --border-radius-lg: 12px;

  /* Shadow */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg-gray);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-primary-dark);
}

/* ============================================
   Layout
   ============================================ */
.site-container {
  max-width: var(--site-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.content-area {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: var(--spacing-xl);
  align-items: start;
}

.main-content {
  min-width: 0;
}

/* ============================================
   Header
   ============================================ */
.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: var(--site-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-text);
  text-decoration: none;
}

.site-logo:hover {
  color: var(--color-primary);
}

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #2D9D78, #247D60);
  color: white;
  border-radius: 8px;
  font-size: 18px;
  font-weight: 900;
}

.site-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-weight: 400;
  margin-left: var(--spacing-sm);
}

/* Navigation */
.main-nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-xs);
}

.main-nav a {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--border-radius);
  transition: all 0.2s ease;
}

.main-nav a:hover {
  background: var(--color-bg-dark);
  color: var(--color-primary);
}

/* Mobile menu button */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  color: var(--color-text);
  font-size: 24px;
}

/* ============================================
   Breadcrumb
   ============================================ */
.breadcrumb {
  padding: var(--spacing-md) 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-text-light);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb-separator {
  margin: 0 var(--spacing-sm);
  color: var(--color-text-muted);
}

/* ============================================
   Article Card (Archive)
   ============================================ */
.post-card {
  background: var(--color-bg);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.post-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.post-card-thumbnail {
  width: 260px;
  min-width: 260px;
  height: 170px;
  border-radius: var(--border-radius);
  overflow: hidden;
  background: var(--color-bg-dark);
}

.post-card-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post-card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.post-card-category {
  display: inline-block;
  padding: 2px 10px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: 4px;
  width: fit-content;
}

.post-card-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-text);
}

.post-card-title a {
  color: inherit;
}

.post-card-title a:hover {
  color: var(--color-primary);
}

.post-card-excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: auto;
}

/* ============================================
   PR Label (ステマ規制対応)
   ============================================ */
.pr-label {
  display: inline-block;
  margin-top: var(--spacing-md);
  padding: 6px 14px;
  background: var(--color-bg-dark);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* ============================================
   Single Article
   ============================================ */
.article-header {
  margin-bottom: var(--spacing-xl);
}

.article-category {
  display: inline-block;
  padding: 4px 14px;
  background: var(--color-primary);
  color: white;
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: 4px;
  margin-bottom: var(--spacing-md);
}

.article-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-3xl);
  font-weight: 800;
  line-height: 1.4;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.article-thumbnail {
  width: 100%;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  margin-bottom: var(--spacing-xl);
}

/* Article Body */
.article-body {
  background: var(--color-bg);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-2xl) var(--spacing-xl);
  box-shadow: var(--shadow-sm);
}

.article-body h2 {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--color-text);
  margin: var(--spacing-3xl) 0 var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 3px solid var(--color-primary);
  line-height: 1.4;
}

.article-body h2:first-child {
  margin-top: 0;
}

.article-body h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  margin: var(--spacing-2xl) 0 var(--spacing-md);
  padding-left: var(--spacing-md);
  border-left: 4px solid var(--color-primary);
  line-height: 1.4;
}

.article-body h4 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin: var(--spacing-xl) 0 var(--spacing-md);
}

.article-body p {
  margin-bottom: var(--spacing-lg);
  line-height: 2;
}

.article-body ul, .article-body ol {
  margin: var(--spacing-md) 0 var(--spacing-lg);
  padding-left: var(--spacing-xl);
}

.article-body li {
  margin-bottom: var(--spacing-sm);
  line-height: 1.8;
}

.article-body blockquote {
  background: var(--color-bg-gray);
  border-left: 4px solid var(--color-primary);
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  font-style: italic;
  color: var(--color-text-light);
}

/* ============================================
   Table of Contents (TOC)
   ============================================ */
.toc-box {
  background: var(--color-bg-gray);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg) var(--spacing-xl);
  margin: var(--spacing-xl) 0;
}

.toc-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.toc-list {
  list-style: none;
  padding: 0;
  counter-reset: toc-counter;
}

.toc-list li {
  counter-increment: toc-counter;
  margin-bottom: var(--spacing-sm);
}

.toc-list li::before {
  content: counter(toc-counter) ".";
  color: var(--color-primary);
  font-weight: 700;
  margin-right: var(--spacing-sm);
}

.toc-list a {
  color: var(--color-text);
  font-size: var(--font-size-sm);
}

.toc-list a:hover {
  color: var(--color-primary);
}

/* ============================================
   Comparison Table (アフィリエイト比較表)
   ============================================ */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-xl) 0;
  font-size: var(--font-size-sm);
  background: var(--color-bg);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.comparison-table thead {
  background: var(--color-primary);
  color: white;
}

.comparison-table th {
  padding: var(--spacing-md) var(--spacing-lg);
  font-weight: 700;
  text-align: center;
  font-size: var(--font-size-sm);
}

.comparison-table td {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-light);
  text-align: center;
  vertical-align: middle;
}

.comparison-table tbody tr:hover {
  background: var(--color-bg-gray);
}

.comparison-table .service-name {
  font-weight: 700;
  text-align: left;
  color: var(--color-text);
}

.comparison-table .price {
  font-weight: 700;
  color: var(--color-danger);
  font-size: var(--font-size-lg);
}

.comparison-table .badge-recommend {
  display: inline-block;
  padding: 2px 8px;
  background: var(--color-accent);
  color: white;
  font-size: var(--font-size-xs);
  font-weight: 700;
  border-radius: 4px;
}

.comparison-table .rating {
  color: var(--color-accent);
  font-weight: 700;
}

/* ============================================
   Ranking Block
   ============================================ */
.ranking-item {
  background: var(--color-bg);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  margin: var(--spacing-xl) 0;
  box-shadow: var(--shadow-md);
  position: relative;
  border: 2px solid var(--color-border);
}

.ranking-item.rank-1 {
  border-color: #FFD700;
}

.ranking-item.rank-2 {
  border-color: #C0C0C0;
}

.ranking-item.rank-3 {
  border-color: #CD7F32;
}

.ranking-badge {
  position: absolute;
  top: -14px;
  left: var(--spacing-lg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 28px;
  border-radius: 14px;
  font-size: var(--font-size-sm);
  font-weight: 800;
  color: white;
}

.rank-1 .ranking-badge { background: linear-gradient(135deg, #FFD700, #FFA500); }
.rank-2 .ranking-badge { background: linear-gradient(135deg, #C0C0C0, #A0A0A0); }
.rank-3 .ranking-badge { background: linear-gradient(135deg, #CD7F32, #A0652F); }

.ranking-item-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.ranking-item-title {
  font-size: var(--font-size-xl);
  font-weight: 800;
}

.ranking-item-score {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-accent);
  font-weight: 700;
  font-size: var(--font-size-lg);
}

.ranking-item-body {
  margin: var(--spacing-md) 0;
}

.ranking-item-points {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-sm);
  margin: var(--spacing-md) 0;
}

.ranking-point {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-gray);
  border-radius: var(--border-radius);
}

.ranking-point::before {
  content: "✓";
  color: var(--color-success);
  font-weight: 700;
}

/* ============================================
   CTA Button (アフィリエイトボタン)
   ============================================ */
.cta-box {
  text-align: center;
  margin: var(--spacing-xl) 0;
  padding: var(--spacing-xl);
  background: var(--color-bg-gray);
  border-radius: var(--border-radius-lg);
}

.cta-button {
  display: inline-block;
  padding: 16px 48px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: white;
  font-size: var(--font-size-lg);
  font-weight: 800;
  border-radius: 50px;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(232, 145, 90, 0.4);
  transition: all 0.3s ease;
  position: relative;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(232, 145, 90, 0.5);
  color: white;
}

.cta-button::after {
  content: " >";
  font-weight: 400;
}

.cta-subtext {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--spacing-sm);
}

/* Orange CTA variant */
.cta-button--orange {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
}

.cta-button--orange:hover {
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.5);
  color: white;
}

/* ============================================
   Info Box / Alert Box
   ============================================ */
.info-box {
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  margin: var(--spacing-lg) 0;
  font-size: var(--font-size-sm);
}

.info-box--tip {
  background: #EFF6FF;
  border: 1px solid #BFDBFE;
  color: #1E40AF;
}

.info-box--warning {
  background: #FFFBEB;
  border: 1px solid #FDE68A;
  color: #92400E;
}

.info-box--important {
  background: #FEF2F2;
  border: 1px solid #FECACA;
  color: #991B1B;
}

.info-box-title {
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

/* ============================================
   Pros & Cons Box
   ============================================ */
.pros-cons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin: var(--spacing-xl) 0;
}

.pros-box, .cons-box {
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
}

.pros-box {
  background: #F0FDF4;
  border: 1px solid #BBF7D0;
}

.cons-box {
  background: #FEF2F2;
  border: 1px solid #FECACA;
}

.pros-box-title {
  font-weight: 700;
  color: var(--color-success);
  margin-bottom: var(--spacing-sm);
}

.cons-box-title {
  font-weight: 700;
  color: var(--color-danger);
  margin-bottom: var(--spacing-sm);
}

.pros-box ul, .cons-box ul {
  list-style: none;
  padding: 0;
}

.pros-box li::before {
  content: "○ ";
  color: var(--color-success);
  font-weight: 700;
}

.cons-box li::before {
  content: "△ ";
  color: var(--color-danger);
  font-weight: 700;
}

/* ============================================
   FAQ Block
   ============================================ */
.faq-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  margin: var(--spacing-md) 0;
  overflow: hidden;
}

.faq-question {
  padding: var(--spacing-md) var(--spacing-lg);
  font-weight: 700;
  background: var(--color-bg-gray);
  position: relative;
  padding-left: 48px;
}

.faq-question::before {
  content: "Q";
  position: absolute;
  left: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  font-weight: 800;
  font-size: var(--font-size-sm);
}

.faq-answer {
  padding: var(--spacing-md) var(--spacing-lg);
  padding-left: 48px;
  position: relative;
  line-height: 1.8;
}

.faq-answer::before {
  content: "A";
  position: absolute;
  left: var(--spacing-md);
  top: var(--spacing-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--color-accent);
  color: white;
  border-radius: 50%;
  font-weight: 800;
  font-size: var(--font-size-sm);
}

/* ============================================
   Balloon (吹き出し)
   ============================================ */
.balloon {
  display: flex;
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
  align-items: flex-start;
}

.balloon--right {
  flex-direction: row-reverse;
}

.balloon-icon {
  flex-shrink: 0;
  text-align: center;
}

.balloon-name {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 4px;
}

.balloon-text {
  position: relative;
  background: var(--color-bg-gray);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  max-width: 80%;
  line-height: 1.8;
  font-size: var(--font-size-sm);
}

.balloon--left .balloon-text::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 16px;
  border-width: 8px 8px 8px 0;
  border-style: solid;
  border-color: transparent var(--color-border) transparent transparent;
}

.balloon--right .balloon-text::before {
  content: "";
  position: absolute;
  right: -8px;
  top: 16px;
  border-width: 8px 0 8px 8px;
  border-style: solid;
  border-color: transparent transparent transparent var(--color-border);
}

/* ============================================
   Step Block
   ============================================ */
.step-item {
  display: flex;
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-lg);
  background: var(--color-bg);
  border-radius: var(--border-radius-lg);
  border-left: 4px solid var(--color-primary);
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  font-size: var(--font-size-xl);
  font-weight: 900;
}

.step-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.step-content {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ============================================
   Star Rating
   ============================================ */
.star-rating {
  color: var(--color-accent);
  font-size: var(--font-size-lg);
  letter-spacing: 2px;
}

.star-score {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  font-weight: 700;
  margin-left: 4px;
}

/* ============================================
   Sidebar
   ============================================ */
.sidebar {
  position: sticky;
  top: 80px;
}

.sidebar-widget {
  background: var(--color-bg);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.sidebar-widget-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-primary);
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  background: var(--color-text);
  color: #D1D5DB;
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
  margin-top: var(--spacing-3xl);
}

.footer-inner {
  max-width: var(--site-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-nav a {
  color: #D1D5DB;
  font-size: var(--font-size-sm);
}

.footer-nav a:hover {
  color: white;
}

.footer-copy {
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* ============================================
   Pagination
   ============================================ */
.pagination {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin: var(--spacing-2xl) 0;
}

.pagination a, .pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  transition: all 0.2s ease;
}

.pagination a:hover {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.pagination .current {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

/* ============================================
   Front Page - Hero
   ============================================ */
.hero {
  background: linear-gradient(135deg, #1A5E4B 0%, var(--color-primary) 50%, #3DB88C 100%);
  color: white;
  padding: var(--spacing-3xl) 0;
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.hero-title {
  font-size: var(--font-size-4xl);
  font-weight: 900;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

.hero-categories {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.hero-category-tag {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(255,255,255,0.15);
  color: white;
  border-radius: 50px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.2);
  transition: all 0.2s ease;
}

.hero-category-tag:hover {
  background: rgba(255,255,255,0.25);
  color: white;
}

/* Front Page Section */
.front-section {
  margin-bottom: var(--spacing-3xl);
}

.front-section-title {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.front-section-title span {
  display: inline-block;
  border-bottom: 3px solid var(--color-primary);
  padding-bottom: var(--spacing-sm);
}

/* Category Cards on Front Page */
.category-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

.category-card {
  background: var(--color-bg);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.category-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-primary);
}

.category-card-icon {
  font-size: 40px;
  margin-bottom: var(--spacing-md);
}

.category-card-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.category-card-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
  .content-area {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }

  .header-inner {
    height: 56px;
  }

  .main-nav {
    display: none;
  }

  .main-nav.is-open {
    display: block;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-md);
  }

  .main-nav.is-open ul {
    flex-direction: column;
  }

  .menu-toggle {
    display: block;
  }

  .hero-title {
    font-size: var(--font-size-2xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-base);
  }

  .article-title {
    font-size: var(--font-size-2xl);
  }

  .article-body {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .article-body h2 {
    font-size: var(--font-size-xl);
  }

  .post-card {
    flex-direction: column;
  }

  .post-card-thumbnail {
    width: 100%;
    min-width: auto;
    height: 200px;
  }

  .category-cards {
    grid-template-columns: 1fr;
  }

  .pros-cons {
    grid-template-columns: 1fr;
  }

  .comparison-table {
    font-size: var(--font-size-xs);
  }

  .comparison-table th,
  .comparison-table td {
    padding: var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  .hero {
    padding: var(--spacing-2xl) var(--spacing-md);
  }

  .cta-button {
    padding: 14px 32px;
    font-size: var(--font-size-base);
  }

  .ranking-item {
    padding: var(--spacing-lg);
  }
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center { text-align: center; }
.text-sm { font-size: var(--font-size-sm); }
.text-muted { color: var(--color-text-muted); }
.mt-1 { margin-top: var(--spacing-md); }
.mt-2 { margin-top: var(--spacing-xl); }
.mb-1 { margin-bottom: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-xl); }
.hidden { display: none; }

/* ============================================
   Print Styles
   ============================================ */
@media print {
  .site-header, .sidebar, .site-footer, .cta-box, .toc-box {
    display: none;
  }

  .content-area {
    grid-template-columns: 1fr;
  }

  .article-body {
    box-shadow: none;
    padding: 0;
  }
}