/* ========================================
   CSS Variables
======================================== */
:root {
  --primary: #27AE60;
  --primary-light: #a8d55c;
  --primary-dark: #1e8449;
  --text: #2C3E50;
  --text-light: #555;
  --text-muted: #95a5a6;
  --bg: #ffffff;
  --bg-gray: #f8f9fa;
  --bg-dark: #2C3E50;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --radius: 16px;
  --radius-sm: 8px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  padding-top: 70px;
}

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

a {
  text-decoration: none;
  color: inherit;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========================================
   Header
======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 70px;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: box-shadow 0.3s;
}

.header.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}

.logo-text {
  font-family: 'Kumbh Sans', sans-serif;
  font-size: 24px;
  font-weight: 700;
  color: #000000;
}

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  transition: color 0.2s;
  display: flex;
  align-items: center;
  gap: 6px;
}

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

.nav-icon {
  font-size: 18px;
  display: inline-block;
  line-height: 1;
}

.menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: 0.3s;
}

.menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background: white;
  padding: 20px;
  box-shadow: var(--shadow);
  z-index: 999;
}

.mobile-menu.active {
  display: block;
}

.mobile-menu nav {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mobile-menu a {
  font-size: 14px;
  font-weight: 500;
  padding: 12px 0;
  border-bottom: 1px solid #eee;
  display: flex;
  align-items: center;
  gap: 8px;
}

.mobile-menu .nav-icon {
  font-size: 20px;
}

/* ========================================
   Hero
======================================== */
.hero {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
  padding: 60px 20px 120px;
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.hero-text {
  flex: 0 0 auto;
  max-width: 550px;
}

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.25);
  color: white;
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 42px;
  font-weight: 700;
  color: white;
  line-height: 1.3;
  margin-bottom: 20px;
}

.hero h1 .highlight {
  color: #fff;
  background: rgba(255,255,255,0.2);
  padding: 0 8px;
  border-radius: 6px;
}

.hero-description {
  font-size: 18px;
  color: rgba(255,255,255,0.95);
  margin-bottom: 24px;
  line-height: 1.8;
}

.target-badge {
  display: inline-block;
  background: white;
  color: var(--primary);
  padding: 10px 20px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
}

/* ヒーロー画像 - PC版 5枚並び */
.hero-images-pc {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  flex: 1;
  justify-content: flex-end;
}

.hero-image-item {
  flex: 0 0 auto;
}

.hero-image-item img {
  width: 150px;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 16px 48px rgba(0,0,0,0.2);
}

/* 画像の高さを揃える */
.hero-image-item {
  display: flex;
  align-items: flex-end;
}

/* ヒーロー画像 - モバイル版 1枚のみ */
.hero-image-mobile {
  display: none;
}

.hero-image-mobile img {
  width: 240px;
  height: auto;
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  margin: 0 auto;
}

/* 旧hero-image（後方互換のため残す、非表示） */
.hero-image {
  display: none;
}

.hero-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
}

.hero-wave svg {
  width: 100%;
  height: 100%;
}

/* ========================================
   Section Common
======================================== */
.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  text-align: center;
  margin-bottom: 20px;
}

/* ========================================
   About
======================================== */
.about {
  padding: 80px 20px;
  text-align: center;
}

.about-lead {
  font-size: 18px;
  color: var(--text-light);
  margin-bottom: 48px;
  line-height: 1.9;
}

.about-lead strong {
  color: var(--primary);
}

.about-points {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  align-items: stretch;
}

.about-point {
  background: var(--bg-gray);
  padding: 32px 28px;
  border-radius: var(--radius);
  flex: 1;
  min-width: 280px;
  max-width: 320px;
  text-align: center;
}

/* ラッパーdiv用（フッター付きのabout-point用） */
.about-point-wrapper {
  position: relative;
  flex: 1;
  min-width: 280px;
  max-width: 320px;
}

.about-point-wrapper .about-point {
  flex: 1;
}

/* フッター用の注釈 */
.about-point-note {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 320px;
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 8px;
  white-space: nowrap;
  text-align: center;
  pointer-events: none;
}

.point-icon {
  font-size: 36px;
  display: block;
  margin: 0 auto 16px;
}

.about-point p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
}

.about-point strong {
  display: block;
  font-size: 17px;
  color: var(--text);
  margin-bottom: 8px;
}

/* ========================================
   Features
======================================== */
.features {
  padding: 80px 20px;
  background: var(--bg-gray);
}

.feature-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.feature-card {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s;
  display: block;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.feature-image-wrap {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
  padding: 24px;
  display: flex;
  justify-content: center;
}

.feature-image-wrap img {
  width: 140px;
  height: auto;
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.feature-content {
  padding: 28px 24px;
  text-align: center;
}

.feature-icon {
  font-size: 32px;
  display: block;
  margin-bottom: 12px;
}

.feature-content h3 {
  font-size: 20px;
  color: var(--text);
  margin-bottom: 12px;
}

.feature-content p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.feature-link {
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
}

/* ========================================
   Screens
======================================== */
.screens {
  padding: 80px 20px;
}

.screens.parent-screens {
  background: var(--bg-gray);
}

.screens-header {
  text-align: center;
  margin-bottom: 48px;
}

.screens-badge {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 20px;
}

.screens-badge.child {
  background: #e8f5e9;
  color: var(--primary);
}

.screens-badge.parent {
  background: #e3f2fd;
  color: #1976d2;
}

.screens-lead {
  font-size: 16px;
  color: var(--text-light);
}

.screen-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.screen-item {
  text-align: center;
}

.screen-item img {
  width: 100%;
  max-width: 180px;
  margin: 0 auto 16px;
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.screen-item p {
  font-size: 14px;
  color: var(--text-light);
  font-weight: 500;
}

/* ========================================
   Flow
======================================== */
.flow {
  padding: 80px 20px;
  text-align: center;
}

.flow-lead {
  font-size: 16px;
  color: var(--text-light);
  margin-bottom: 48px;
}

.flow-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.flow-step {
  background: var(--bg-gray);
  padding: 28px 24px;
  border-radius: var(--radius);
  min-width: 280px;
  max-width: 320px;
}

.flow-person {
  font-size: 24px;
  margin-bottom: 12px;
}

.flow-person.child {
  color: var(--primary);
}

.flow-person.parent {
  color: #1976d2;
}

.flow-action {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

.flow-arrow {
  font-size: 28px;
  color: var(--primary);
  font-weight: bold;
}

/* ========================================
   CTA
======================================== */
.cta {
  padding: 80px 20px;
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
  text-align: center;
}

.cta h2 {
  font-family: 'Kumbh Sans', sans-serif;
  font-size: 40px;
  color: white;
  margin-bottom: 16px;
}

.cta p {
  font-size: 18px;
  color: rgba(255,255,255,0.9);
  margin-bottom: 32px;
  line-height: 1.8;
}

.cta-features {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.cta-features span {
  background: rgba(255,255,255,0.2);
  color: white;
  padding: 10px 20px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 500;
}

.store-badges {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.store-badge-link {
  display: inline-block;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.store-badge-link:hover {
  transform: scale(1.05);
  opacity: 0.9;
}

.store-badge {
  height: 54px;
  width: auto;
}

.store-badge-link.google-play .store-badge {
  height: 54px;
}

/* ========================================
   Footer
======================================== */
.footer {
  background: var(--bg-dark);
  padding: 48px 20px 32px;
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 24px;
}

.footer-logo {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.footer-name {
  font-family: 'Kumbh Sans', sans-serif;
  font-size: 20px;
  font-weight: 600;
  color: white;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 24px;
}

.footer-nav a {
  color: var(--text-muted);
  font-size: 14px;
  transition: color 0.2s;
}

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

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 24px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 13px;
  transition: color 0.2s;
}

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

.copyright {
  color: var(--text-muted);
  font-size: 13px;
}

/* ========================================
   Page Header (for sub pages)
======================================== */
.page-header {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
  padding: 60px 20px;
  text-align: center;
}

.page-header h1 {
  font-size: 36px;
  color: white;
  margin-bottom: 12px;
}

.page-header p {
  font-size: 16px;
  color: rgba(255,255,255,0.9);
}

/* ========================================
   Step Flow (for sub pages)
======================================== */
.step-section {
  padding: 80px 20px;
}

.step-section.alt {
  background: var(--bg-gray);
}

.steps-container {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  margin-top: 48px;
}

.step-card {
  flex: 1;
  text-align: center;
  position: relative;
}

.step-number {
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  margin: 0 auto 20px;
}

.step-card img {
  width: 160px;
  margin: 0 auto 20px;
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.step-card h3 {
  font-size: 18px;
  color: var(--text);
  margin-bottom: 12px;
}

.step-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

.step-arrow {
  position: absolute;
  top: 24px;
  right: -20px;
  font-size: 24px;
  color: var(--primary);
}

/* ========================================
   Detail Section (for sub pages)
======================================== */
.detail-section {
  padding: 80px 20px;
}

.detail-section.alt {
  background: var(--bg-gray);
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.detail-grid-4col {
  grid-template-columns: repeat(4, 1fr);
}

.detail-item {
  text-align: center;
}

.detail-item img {
  width: 160px;
  margin: 0 auto 16px;
  border-radius: 16px;
  box-shadow: var(--shadow);
  display: block;
}

.detail-item h3 {
  font-size: 16px;
  color: var(--text);
  margin-bottom: 8px;
}

.detail-item p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

/* ========================================
   Tips Page Styles
======================================== */

/* Tips ページヘッダー（余白縮小） */
.tips-page-header {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
  padding: 15px 20px;
  text-align: center;
}

.tips-page-header h1 {
  font-size: 32px;
  color: white;
  margin-bottom: 8px;
}

.tips-page-header p {
  font-size: 14px;
  color: rgba(255,255,255,0.9);
}

/* Tips メインコンテナ（PC: 左右分割） */
.tips-main-container {
  display: flex;
  min-height: calc(100vh - 70px - 100px);
}

/* Tips サイドバー（PC: 左固定） */
.tips-sidebar {
  width: 250px;
  flex-shrink: 0;
  background: white;
  border-right: 1px solid #eee;
  padding: 20px 16px;
  position: sticky;
  top: 70px;
  height: calc(100vh - 70px);
  overflow-y: auto;
}

.tips-sidebar-section {
  margin-bottom: 24px;
}

.tips-sidebar-section:last-child {
  margin-bottom: 0;
}

.tips-sidebar-title {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--bg-gray);
}

.tips-sidebar-title.parent {
  color: #1976d2;
}

.tips-sidebar-title.child {
  color: var(--primary);
}

.tips-sidebar-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.tips-sidebar-list a {
  display: block;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--text);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.tips-sidebar-list a:hover {
  background: var(--primary);
  color: white;
}

/* Tips コンテンツエリア（PC: 右側） */
.tips-content {
  flex: 1;
  overflow-y: auto;
}

/* Tips モバイル用リンク集（デフォルト非表示） */
.tips-nav-mobile {
  display: none;
  background: white;
  padding: 16px;
  border-bottom: 1px solid #eee;
}

.tips-nav-mobile-section {
  margin-bottom: 16px;
}

.tips-nav-mobile-section:last-child {
  margin-bottom: 0;
}

.tips-nav-mobile-title {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--bg-gray);
}

.tips-nav-mobile-title.parent {
  color: #1976d2;
}

.tips-nav-mobile-title.child {
  color: var(--primary);
}

.tips-nav-mobile-list {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  gap: 8px;
}

.tips-nav-mobile-list a {
  display: inline-block;
  background: var(--bg-gray);
  padding: 8px 14px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  transition: all 0.2s;
}

.tips-nav-mobile-list a:hover {
  background: var(--primary);
  color: white;
}

/* Tips セクション（余白縮小） */
.tips-section {
  padding: 20px 20px 30px;
  border-bottom: 1px solid #eee;
}

.tips-section.alt {
  background: var(--bg-gray);
}

.tips-section-header {
  text-align: center;
  margin-bottom: 16px;
}

.tips-section-header .screens-badge {
  margin-bottom: 8px;
}

.tips-section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0;
}

/* Tips ステップコンテナ */
.tips-steps-container {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 8px 4px 16px;
  margin: 0 -4px;
  -webkit-overflow-scrolling: touch;
}

/* センター寄せ（JSで追加） */
.tips-steps-container.centered {
  justify-content: center;
  overflow-x: visible;
}

/* スクロールバーのスタイリング */
.tips-steps-container::-webkit-scrollbar {
  height: 6px;
}

.tips-steps-container::-webkit-scrollbar-track {
  background: var(--bg-gray);
  border-radius: 3px;
}

.tips-steps-container::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 3px;
}

.tips-steps-container::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* Tips ステップカード */
.tips-step-card {
  flex: 0 0 auto;
  width: 160px;
  text-align: center;
  position: relative;
  scroll-snap-align: start;
}

.tips-step-card .step-number {
  width: 32px;
  height: 32px;
  font-size: 14px;
  margin-bottom: 10px;
}

.tips-step-card img {
  width: 140px;
  height: auto;
  aspect-ratio: 9 / 19.5;
  margin: 0 auto 10px;
  border-radius: 10px;
  box-shadow: var(--shadow);
}

.tips-step-card p {
  font-size: 12px;
  color: var(--text-light);
  line-height: 1.4;
}

/* Tips 矢印（PC用） */
.tips-step-arrow {
  position: absolute;
  top: calc(42px + (140px * 19.5 / 9 / 2));
  right: -16px;
  font-size: 18px;
  color: var(--primary);
  font-weight: bold;
}

/* トップに戻るリンク */
.tips-back-to-top {
  text-align: center;
  margin-top: 16px;
}

.tips-back-to-top a {
  display: inline-block;
  font-size: 13px;
  color: var(--primary);
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 50px;
  background: var(--bg-gray);
  transition: all 0.2s;
}

.tips-back-to-top a:hover {
  background: var(--primary);
  color: white;
}

/* ========================================
   Responsive - 1200px
======================================== */
@media (max-width: 1200px) {
  .hero-image-item img {
    width: 130px;
  }
  
  .hero-images-pc {
    gap: 10px;
  }
}

/* ========================================
   Responsive - 1024px
======================================== */
@media (max-width: 1024px) {
  .hero-image-item img {
    width: 110px;
  }
  
  .hero-images-pc {
    gap: 8px;
  }
  
  .hero-text {
    max-width: 360px;
  }
  
  .hero h1 {
    font-size: 36px;
  }
}

/* ========================================
   Responsive - 900px
======================================== */
@media (max-width: 900px) {
  /* ヒーロー画像切り替え */
  .hero-images-pc {
    display: none;
  }
  
  .hero-image-mobile {
    display: block;
    text-align: center;
    margin-top: 32px;
  }
  
  .hero-content {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-text {
    max-width: 100%;
  }
  
  .feature-cards {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .screen-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .detail-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========================================
   Responsive - 768px
======================================== */
@media (max-width: 768px) {
  body {
    padding-top: 60px;
  }
  
  .header {
    height: 60px;
  }
  
  .nav {
    display: none;
  }
  
  .menu-btn {
    display: flex;
  }
  
  .mobile-menu {
    top: 60px;
  }
  
  .hero {
    padding: 40px 20px 100px;
  }
  
  .hero h1 {
    font-size: 32px;
  }
  
  .hero-description {
    font-size: 16px;
  }
  
  .hero-image-mobile img {
    width: 220px;
  }
  
  .section-title {
    font-size: 22px;
  }
  
  .about-points {
    flex-direction: column;
    align-items: center;
  }
  
  .feature-cards {
    grid-template-columns: 1fr;
    max-width: 340px;
    margin: 48px auto 0;
  }
  
  .screen-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  
  .screen-item img {
    max-width: 140px;
  }
  
  .flow-diagram {
    flex-direction: column;
  }
  
  .flow-arrow {
    transform: rotate(90deg);
  }
  
  .steps-container {
    flex-direction: column;
    align-items: center;
  }
  
  .step-arrow {
    display: none;
  }
  
  .detail-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    max-width: 400px;
    margin: 48px auto 0;
    gap: 24px;
  }
  
  .detail-grid-4col {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  
  .detail-grid .detail-item img {
    width: 140px;
  }
  
  .cta h2 {
    font-size: 32px;
  }

  .page-header h1 {
    font-size: 24px;
  }

  .footer-nav,
  .footer-links {
    flex-direction: column;
    gap: 12px;
  }
  
  /* ========================================
     Tips - モバイル対応
  ======================================== */
  
  /* サイドバーを非表示 */
  .tips-sidebar {
    display: none;
  }
  
  /* モバイル用リンク集を表示（!importantで確実に上書き） */
  .tips-nav-mobile {
    display: block !important;
  }
  
  .tips-main-container {
    flex-direction: column;
  }
  
  .tips-content {
    width: 100%;
  }
  
  .tips-page-header {
    padding: 12px 16px;
  }
  
  .tips-page-header h1 {
    font-size: 26px;
  }
  
  .tips-section {
    padding: 16px 16px 24px;
  }
  
  .tips-section-title {
    font-size: 18px;
  }
  
  /* モバイル: 縦積みレイアウト */
  .tips-steps-container {
    flex-direction: column;
    align-items: center;
    overflow-x: visible;
    gap: 16px;
    padding: 0;
    margin: 0;
  }
  
  .tips-steps-container.centered {
    justify-content: flex-start;
  }
  
  .tips-step-card {
    width: 100%;
    max-width: 240px;
  }
  
  .tips-step-card img {
    width: 180px;
  }
  
  .tips-step-arrow {
    display: none;
  }
}