/* ========================================
   CSS Variables - Color Palette
   ======================================== */
:root {
  --main-green: #438247;
  --sub-green: #57A65A;
  --theater-orange: #E97B2A;
  --bg-light-green: rgba(67, 130, 71, 0.05);
  --bg-light-orange: rgba(233, 123, 42, 0.05);
  --text-dark: #333333;
  --dark-gray: #2C2C2C;
  --text-light: #666666;
  --border-color: #E0E0E0;
  --white: #FFFFFF;
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 40px;
  --spacing-xl: 64px;
  --max-width: 1200px;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: auto;
  overflow-x: clip;
  width: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "游ゴシック体", YuGothic, "Yu Gothic Medium", Meiryo, sans-serif;
  line-height: 1.7;
  color: var(--text-dark);
  background-color: var(--white);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  width: 100%;
  overflow-x: clip;
}

main {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
}

h2 {
  font-size: 2rem;
  color: var(--text-dark);
}

h3 {
  font-size: 1.5rem;
  color: var(--text-dark);
}

h4 {
  font-size: 1.25rem;
  color: var(--text-dark);
}

p {
  font-size: 1rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-light);
}

a {
  color: var(--main-green);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  opacity: 0.7;
}

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

/* ========================================
   Container & Section Utilities
   ======================================== */
.container {
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  box-sizing: border-box;
}

.section {
  padding: var(--spacing-xl) 0;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

.section-title {
  text-align: center;
  font-size: 2rem;
  margin-bottom: var(--spacing-lg);
  line-height: 1.4;
  position: relative;
  padding-bottom: var(--spacing-md);
}

.section-title::after {
  content: '';
  display: block;
  width: 120px;
  height: 4px;
  background: linear-gradient(85deg,
    var(--main-green) 0%,
    var(--main-green) calc(25% - 0.5px),
    white calc(25% - 0.5px),
    white calc(25% + 0.5px),
    var(--main-green) calc(25% + 0.5px),
    var(--main-green) calc(50% - 0.5px),
    white calc(50% - 0.5px),
    white calc(50% + 0.5px),
    var(--theater-orange) calc(50% + 0.5px),
    var(--theater-orange) calc(75% - 0.5px),
    white calc(75% - 0.5px),
    white calc(75% + 0.5px),
    var(--theater-orange) calc(75% + 0.5px),
    var(--theater-orange) 100%
  );
  margin: var(--spacing-sm) auto 0;
  border-radius: 2px;
}

/* ========================================
   Buttons
   ======================================== */
.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-size: 1rem;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--main-green);
  color: var(--white);
}

.btn-primary:hover {
  background-color: rgba(67, 130, 71, 0.9);
  opacity: 1;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(67, 130, 71, 0.3);
}

.btn-secondary {
  background-color: var(--white);
  color: var(--main-green);
  border: 2px solid var(--main-green);
}

.btn-secondary:hover {
  background-color: var(--main-green);
  color: var(--white);
  opacity: 1;
  transform: translateY(-2px);
}

.btn-appstore {
  display: inline-block;
  margin-top: var(--spacing-md);
}

.btn-appstore img {
  height: 50px;
  width: auto;
}

/* ========================================
   1. Header
   ======================================== */
.header {
  position: sticky;
  top: 0;
  background-color: var(--dark-gray);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  padding: var(--spacing-sm) 0;
  transition: box-shadow 0.3s ease, padding 0.3s ease;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

.header > * {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header.scrolled {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  padding: 12px 0;
}

.header-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: 0 var(--spacing-md);
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  box-sizing: border-box;
  flex-wrap: nowrap;
}

.header-logo {
  display: flex;
  align-items: center;
  transition: var(--transition);
  flex-shrink: 0;
}

.header-logo:hover {
  transform: scale(1.02);
}

.header-logo img {
  height: 32px; /* Reduced from 40px for tighter layout */
  width: auto;
  display: block;
  transition: var(--transition);
}

/* Header Right (App Store + Hamburger) */
.header-right {
  display: flex;
  align-items: center;
  gap: 12px; /* Reduced from var(--spacing-md) for tighter layout */
  flex-shrink: 0;
}

.header-appstore {
  display: inline-block;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.header-appstore:hover {
  transform: scale(1.05);
  opacity: 0.9;
}

.header-appstore img {
  height: 28px; /* Reduced from 32px for tighter layout */
  width: auto;
  display: block;
}

/* Hamburger Menu */
.hamburger-menu {
  display: none; /* Hidden on desktop */
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  margin-right: 8px;
  position: relative;
  z-index: 1001;
  border-radius: 4px;
  transition: var(--transition);
}

/* Hover and active animations for hamburger menu (PC only) */
@media (min-width: 1024px) {
  .hamburger-menu:hover {
    background-color: rgba(255, 255, 255, 0.1);
  }

  .hamburger-menu:active {
    transform: scale(0.95);
  }
}

.hamburger-menu span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--white);
  transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  border-radius: 2px;
  transform-origin: center;
}

.hamburger-menu.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.hamburger-menu.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Hamburger menu span hover (PC only) */
@media (min-width: 1024px) {
  .hamburger-menu:hover span {
    background-color: rgba(255, 255, 255, 0.8);
  }
}

/* Navigation Menu */
/* Desktop: Show nav links horizontally */
.nav-menu {
  display: flex;
  justify-content: center;
  flex: 1;
  align-items: center;
}

.nav-menu ul {
  list-style: none;
  display: flex;
  flex-direction: row;
  gap: 8px; /* Reduced from var(--spacing-md) for tighter spacing */
  align-items: center;
  margin: 0;
  padding: 0;
  flex-wrap: nowrap; /* Prevent wrapping */
}

.nav-menu li {
  display: inline-block;
  opacity: 1;
  transform: none;
  white-space: nowrap; /* Prevent text wrapping */
}

.nav-menu a {
  color: var(--white);
  font-weight: 500;
  font-size: 0.9rem; /* Reduced from default for better fit */
  padding: 8px 12px; /* Reduced padding */
  border-radius: 6px;
  transition: var(--transition);
  position: relative;
  display: inline-block;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 70%;
  height: 2px;
  background-color: var(--white);
  transition: transform 0.3s ease;
}

.nav-menu a:hover::after {
  transform: translateX(-50%) scaleX(1);
}

.nav-menu a:hover {
  background-color: rgba(255, 255, 255, 0.15);
  color: var(--white);
  opacity: 1;
}

.nav-menu a:active {
  transform: scale(0.97);
}

/* ========================================
   1.5 Breadcrumb Navigation
   ======================================== */
.breadcrumb {
  position: sticky;
  top: 70px;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(8px);
  padding: 12px 0;
  border-bottom: 1px solid rgba(67, 130, 71, 0.15);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0);
  transition: box-shadow 0.2s ease;
}

.breadcrumb.scrolled {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.breadcrumb-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.breadcrumb-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: rgba(0, 0, 0, 0.6);
}

.breadcrumb-item a {
  color: rgba(0, 0, 0, 0.6);
  text-decoration: none;
  transition: color 0.2s ease;
}

.breadcrumb-item a:hover {
  color: var(--main-green);
  text-decoration: underline;
}

.breadcrumb-item.active {
  color: var(--text-dark);
  font-weight: 500;
}

.breadcrumb-separator {
  color: rgba(0, 0, 0, 0.3);
  user-select: none;
}

/* Desktop: Position breadcrumb in header */
@media (min-width: 769px) {
  .header .breadcrumb {
    position: static;
    background-color: transparent;
    backdrop-filter: none;
    padding: 0;
    border-bottom: none;
    box-shadow: none;
    margin-left: 0;
  }

  .header .breadcrumb-container {
    padding: 0;
    max-width: 100%;
  }

  .header .breadcrumb-item,
  .header .breadcrumb-item a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.8125rem;
  }

  .header .breadcrumb-item a:hover {
    color: var(--white);
  }

  .header .breadcrumb-item.active {
    color: var(--white);
    font-weight: 500;
  }

  .header .breadcrumb-separator {
    color: rgba(255, 255, 255, 0.4);
  }

  .header-right {
    margin-left: auto;
  }
}

/* Hide breadcrumb on main page */
body:not(.subpage) .breadcrumb {
  display: none;
}

/* Subpage: Show hamburger menu on all screen sizes */
.subpage .hamburger-menu {
  display: flex !important;
}

/* Subpage: Full-screen hamburger menu on all screen sizes */
.subpage .nav-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(42, 42, 42, 0.98);
  backdrop-filter: blur(10px);
  padding: 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  z-index: 1000;
  transform: scale(0.95);
  transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              visibility 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.subpage .nav-menu:not(.active) {
  display: flex !important;
}

.subpage .nav-menu.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: scale(1);
}

.subpage .nav-menu ul {
  flex-direction: column;
  gap: 0;
  max-width: calc(100% - 48px);
  width: 100%;
}

.subpage .nav-menu li {
  width: 100%;
  opacity: 0;
  transform: translateY(20px);
  visibility: hidden;
}

.subpage .nav-menu.active li {
  animation: slideInMenuItemFullscreen 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  visibility: visible !important;
  opacity: 1 !important;
}

.subpage .nav-menu.active li:nth-child(1) {
  animation-delay: 0.1s;
}

.subpage .nav-menu.active li:nth-child(2) {
  animation-delay: 0.2s;
}

.subpage .nav-menu.active li:nth-child(3) {
  animation-delay: 0.3s;
}

.subpage .nav-menu.active li:nth-child(4) {
  animation-delay: 0.4s;
}

.subpage .nav-menu.active li:nth-child(5) {
  animation-delay: 0.5s;
}

.subpage .nav-menu > ul > li > a {
  display: block;
  padding: 20px 24px;
  color: var(--white) !important;
  font-size: 1.125rem;
  font-weight: 500;
  line-height: 1.5;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  border-left: 3px solid transparent;
  -webkit-tap-highlight-color: transparent;
  tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

.subpage .nav-menu > ul > li > a:focus,
.subpage .nav-menu > ul > li > a:focus-visible {
  outline: none !important;
}

/* Disable main page header hover animation for subpage navigation */
.subpage .nav-menu a::after {
  display: none !important;
}

/* Hover effects for full-screen navigation (mobile and PC) */
.subpage .nav-menu > ul > li > a:hover,
.subpage .nav-menu > ul > li > a:active {
  background-color: rgba(255, 255, 255, 0.1) !important;
  border-left-color: var(--main-green) !important;
}

/* Expandable menu items for subpages */
.subpage .nav-menu .menu-item-expandable {
  position: relative;
  margin-bottom: 0;
}

.subpage .nav-menu .menu-item-expandable > button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 24px;
  text-align: left;
  background: none;
  border: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  border-left: 3px solid transparent;
  color: var(--white) !important;
  font-size: 1.125rem;
  font-weight: 500;
  line-height: 1.5;
  cursor: pointer;
  font-family: inherit;
  -webkit-tap-highlight-color: transparent;
  tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

.subpage .nav-menu .menu-item-expandable > button:focus,
.subpage .nav-menu .menu-item-expandable > button:focus-visible {
  outline: none !important;
}

/* Hover effects for expandable menu buttons (mobile and PC) */
.subpage .nav-menu .menu-item-expandable > button:hover,
.subpage .nav-menu .menu-item-expandable > button:active {
  background-color: rgba(255, 255, 255, 0.1) !important;
  border-left-color: var(--main-green) !important;
}

.subpage .nav-menu .menu-item-expandable.expanded > button {
  background-color: transparent !important;
}

.subpage .nav-menu .menu-item-expandable .expand-icon {
  font-size: 1.125rem;
  opacity: 0.8;
  margin-left: 12px;
  min-width: 20px;
  text-align: center;
}

/* Only enable transition on hover-capable devices */
@media (hover: hover) {
  .subpage .nav-menu .menu-item-expandable .expand-icon {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }
}

.subpage .nav-menu .menu-item-expandable.expanded .expand-icon {
  transform: rotate(180deg);
}

.subpage .nav-menu .submenu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out,
              opacity 0.25s ease;
  opacity: 0;
  list-style: none;
  padding: 0;
  background-color: rgba(0, 0, 0, 0.15);
}

.subpage .nav-menu .menu-item-expandable.expanded .submenu {
  max-height: 500px;
  opacity: 1;
  padding: 4px 0;
}

.subpage .nav-menu .submenu li {
  opacity: 1;
  transform: none;
  animation: none;
  width: 100%;
  position: relative;
}

.subpage .nav-menu .submenu a {
  display: block;
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.5;
  padding: 16px 24px 16px 48px;
  color: rgba(255, 255, 255, 0.9) !important;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  border-left: 2px solid transparent;
  position: relative;
  -webkit-tap-highlight-color: transparent;
  tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

.subpage .nav-menu .submenu a:hover,
.subpage .nav-menu .submenu a:focus,
.subpage .nav-menu .submenu a:active,
.subpage .nav-menu .submenu a:focus-visible {
  background-color: transparent !important;
  border-left-color: transparent !important;
  outline: none !important;
}

.subpage .nav-menu .submenu a::before {
  content: '';
  position: absolute;
  left: 28px;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 4px;
  background-color: rgba(255, 255, 255, 0.4);
  border-radius: 50%;
}

/* ========================================
   2. Hero Section
   ======================================== */
.hero {
  background: linear-gradient(135deg, var(--main-green) 0%, rgba(67, 130, 71, 0.8) 100%);
  color: var(--white);
  padding: var(--spacing-lg) 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

.hero-text {
  text-align: center;
  margin-bottom: var(--spacing-md);
  padding: 0 var(--spacing-md);
  z-index: 1;
  width: 100%;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--white);
  margin: 0;
}

.hero-visual {
  width: 100%;
  max-width: 700px;
  padding: 0;
  margin-bottom: var(--spacing-md);
}

.hero-image {
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

.hero-appstore {
  margin-top: var(--spacing-md);
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-appstore img {
  height: 50px;
  width: auto;
}


/* ========================================
   3. Description Section
   ======================================== */
.section-description {
  background-color: var(--white);
}

.section-description .section-title {
  max-width: 800px;
  margin: 0 auto;
  margin-bottom: var(--spacing-lg);
  text-align: left;
  color: var(--main-green);
  padding-bottom: 0;
}

.section-description .section-title::after {
  display: none;
}

.description-text {
  max-width: 800px;
  margin: 0 auto;
  text-align: left;
}

.description-text p {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

/* ========================================
   4. Use Cases Section
   ======================================== */
.section-usecases {
  background-color: var(--bg-light-green);
}

.user-icons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.user-icon {
  width: 100px;
  height: 100px;
  background-color: var(--sub-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.user-icon img {
  width: 60px;
  height: 60px;
  object-fit: contain;
}

.usecases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.usecase-card {
  background-color: var(--white);
  border-radius: 12px;
  padding: var(--spacing-lg);
  border: 2px solid var(--main-green);
}

.usecase-card-full {
  grid-column: 1 / -1;
  max-width: 600px;
  margin: 0 auto;
  width: 100%;
}

.usecase-card h3 {
  color: var(--main-green);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

.usecase-card-green {
  background-color: var(--main-green);
}

.usecase-card-green h3,
.usecase-card-green p {
  color: var(--white);
}

.usecase-card-orange {
  background-color: var(--theater-orange);
}

.usecase-card-orange h3,
.usecase-card-orange p {
  color: var(--white);
}

.usecase-item {
  margin-bottom: var(--spacing-lg);
}

.usecase-item:last-child {
  margin-bottom: 0;
}

.usecase-item h4 {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-dark);
}

.usecase-item p {
  font-size: 0.95rem;
  margin-bottom: var(--spacing-sm);
}

.usecase-item img {
  width: 100%;
  border-radius: 8px;
  margin-top: var(--spacing-sm);
}

.usecases-more {
  text-align: center;
  padding: var(--spacing-xl);
  background: linear-gradient(to bottom right, var(--main-green) 50%, var(--theater-orange) 50%);
  border-radius: 12px;
  border: 2px solid var(--main-green);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.usecases-more-icon {
  margin-bottom: var(--spacing-md);
}

.usecases-more-text {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--spacing-sm);
}

.usecases-more-description {
  font-size: 1.05rem;
  color: var(--white);
  margin: 0;
}

.plus-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  font-size: 3rem;
  font-weight: 300;
  color: var(--white);
  border: 3px solid var(--white);
  border-radius: 50%;
  transition: var(--transition);
}

.plus-icon:hover {
  transform: rotate(90deg) scale(1.1);
  background-color: rgba(255, 255, 255, 0.2);
}

/* ========================================
   5. Stores Section
   ======================================== */
.section-stores {
  background-color: var(--white);
}

.store-content {
  background-color: var(--sub-green);
  padding: var(--spacing-xl);
  border-radius: 16px;
  max-width: 900px;
  margin: 0 auto;
}

.store-posters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.poster-item {
  text-align: center;
  background-color: var(--white);
  padding: var(--spacing-lg);
  border-radius: 12px;
}

.poster-item img {
  width: 100%;
  margin: 0 auto var(--spacing-sm);
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.poster-item p {
  font-size: 0.9rem;
  font-weight: 600;
}

.poster-item-green p {
  color: var(--main-green);
}

.poster-item-orange p {
  color: var(--theater-orange);
}

.store-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md);
}

.color-guide {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  max-width: 600px;
  margin: 0 auto;
  background-color: var(--bg-light-green);
  padding: var(--spacing-lg);
  border-radius: 12px;
}

.color-guide-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.color-badge {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  flex-shrink: 0;
}

.color-badge.color-green {
  background-color: var(--main-green);
}

.color-badge.color-orange {
  background-color: var(--theater-orange);
}

.color-guide-item p {
  margin: 0;
  text-align: left;
  font-size: 0.95rem;
}

/* ========================================
   6. Press Section
   ======================================== */
.section-press {
  background: linear-gradient(135deg, var(--bg-light-green) 0%, var(--white) 100%);
  text-align: center;
}

.press-content {
  background-color: var(--dark-gray);
  padding: var(--spacing-xl);
  border-radius: 16px;
  max-width: 900px;
  margin: 0 auto;
}

.press-message {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--spacing-lg);
}

.press-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
  display: flex;
  justify-content: center;
  align-items: center;
}

.press-icon img {
  width: 60px;
  height: 60px;
  display: block;
}

.press-description {
  max-width: 700px;
  margin: 0 0 var(--spacing-lg) 0;
  text-align: left;
}

.press-description p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--white);
}

/* ========================================
   7. News Section
   ======================================== */
.section-news {
  background-color: var(--white);
}

.news-list {
  max-width: 800px;
  margin: 0 auto var(--spacing-xl);
  border: 2px solid var(--main-green);
  border-radius: 12px;
  background-color: var(--white);
  overflow: hidden;
}

.news-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--main-green);
  transition: var(--transition);
}

.news-item:hover {
  background-color: var(--bg-light-green);
}

.news-item:last-child {
  border-bottom: none;
}

.news-date {
  flex-shrink: 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--main-green);
  min-width: 100px;
}

.news-title {
  flex: 1;
  margin: 0;
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1.6;
}

.news-title a {
  color: var(--text-dark);
  text-decoration: none;
  transition: var(--transition);
}

.news-title a:hover {
  color: var(--main-green);
  text-decoration: underline;
}

.news-more-button {
  text-align: center;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.news-sns-section {
  text-align: center;
  padding: var(--spacing-xl);
  background: linear-gradient(135deg, var(--bg-light-green) 0%, var(--white) 100%);
  border-radius: 16px;
}

.sns-follow-text {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
}

.sns-icons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.sns-link {
  display: inline-block;
  transition: var(--transition);
}

.sns-link img {
  width: 60px;
  height: 60px;
  transition: var(--transition);
}

.sns-link:hover {
  opacity: 1;
  transform: scale(1.1);
}

/* ========================================
   News Detail Page
   ======================================== */
.section-news-detail {
  background-color: var(--white);
  min-height: 60vh;
}

.news-detail-header {
  text-align: center;
  padding-bottom: var(--spacing-lg);
  border-bottom: 2px solid var(--border-color);
  margin-bottom: var(--spacing-xl);
}

.news-detail-date {
  display: inline-block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--main-green);
  margin-bottom: var(--spacing-md);
}

.news-detail-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.4;
  margin: 0;
}

.news-detail-content {
  max-width: 800px;
  margin: 0 auto;
}

.news-detail-content p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-dark);
  margin-bottom: var(--spacing-lg);
}

.news-detail-content h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--main-green);
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--bg-light-green);
}

.news-detail-content ul {
  margin-bottom: var(--spacing-lg);
  padding-left: var(--spacing-lg);
}

.news-detail-content li {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-dark);
  margin-bottom: var(--spacing-sm);
}

.news-detail-content a {
  color: var(--main-green);
  text-decoration: underline;
  transition: var(--transition);
}

.news-detail-content a:hover {
  color: #356835;
}

.news-detail-footer {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--border-color);
  text-align: center;
}

/* ========================================
   8. Contact Section
   ======================================== */
.section-contact {
  background-color: var(--bg-light-green);
}

.contact-description {
  text-align: center;
  font-size: 1.05rem;
  margin-bottom: var(--spacing-xl);
  color: var(--text-light);
}

.contact-form {
  max-width: 600px;
  margin: 0 auto;
  background-color: var(--white);
  padding: var(--spacing-lg);
  border-radius: 12px;
  border: 2px solid var(--main-green);
}

.form-group {
  margin-bottom: var(--spacing-md);
  text-align: left;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--text-dark);
}

.required {
  color: #E53935;
  font-size: 0.85rem;
  margin-left: 4px;
}

.optional {
  color: #999999;
  font-size: 0.85rem;
  margin-left: 4px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--main-green);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition);
  background-color: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--main-green);
  box-shadow: 0 0 0 3px rgba(67, 130, 71, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.inquiry-help {
  margin-top: var(--spacing-sm);
  padding: var(--spacing-sm);
  background-color: var(--bg-light-green);
  border-left: 3px solid var(--main-green);
  border-radius: 4px;
  font-size: 0.9rem;
  color: var(--text-dark);
  line-height: 1.6;
}

/* Dynamic Fields */
.dynamic-fields {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px dashed rgba(67, 130, 71, 0.3);
  transition: opacity 0.3s ease, max-height 0.3s ease;
}

.dynamic-fields .form-group {
  margin-bottom: var(--spacing-md);
}

.dynamic-fields .form-group:last-child {
  margin-bottom: 0;
}

.contact-form button[type="submit"] {
  width: 100%;
  margin-top: var(--spacing-md);
}

.form-message {
  max-width: 600px;
  margin: var(--spacing-md) auto 0;
  padding: var(--spacing-md);
  border-radius: 8px;
  text-align: center;
  font-weight: 500;
}

.form-message.success {
  background-color: #E8F5E9;
  color: #2E7D32;
  border: 2px solid #66BB6A;
}

.form-message.error {
  background-color: #FFEBEE;
  color: #C62828;
  border: 2px solid #EF5350;
}

/* ========================================
   9. Footer
   ======================================== */
.footer {
  background-color: var(--text-dark);
  color: var(--white);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-logo {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.footer-logo img {
  height: 40px;
  width: auto;
  margin: 0 auto;
  filter: brightness(0) invert(1);
}

.footer-nav {
  margin-bottom: var(--spacing-lg);
}

.footer-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md);
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-nav a:hover {
  color: var(--white);
  opacity: 1;
}

.footer-sns {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.footer-sns a {
  display: inline-block;
  transition: var(--transition);
}

.footer-sns img {
  width: 32px;
  height: 32px;
  filter: brightness(0) invert(1);
  transition: var(--transition);
}

.footer-sns a:hover img {
  opacity: 0.7;
}

.footer-copyright {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  margin: 0;
}

/* ========================================
   Subpages - Common Styles
   ======================================== */
.page-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-xl);
  color: var(--text-dark);
}

/* ========================================
   Stores List Page (/stores)
   ======================================== */
.section-stores-list {
  background-color: var(--white);
  min-height: 60vh;
}

.empty-state {
  text-align: center;
  padding: var(--spacing-xl) 0;
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

.empty-state-icon {
  font-size: 5rem;
  margin-bottom: var(--spacing-md);
}

.empty-state-title {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
}

.empty-state-description {
  font-size: 1.05rem;
  color: var(--text-light);
  line-height: 1.8;
}

.store-recruitment {
  background: linear-gradient(135deg, var(--bg-light-green) 0%, var(--white) 100%);
  padding: var(--spacing-xl);
  border-radius: 16px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.recruitment-title {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--main-green);
  margin-bottom: var(--spacing-md);
}

.recruitment-description {
  font-size: 1.05rem;
  color: var(--text-dark);
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
}

.recruitment-cta {
  margin-top: var(--spacing-lg);
}

/* Poster Download Section */
.poster-download-section {
  margin: var(--spacing-lg) 0;
}

.poster-section-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
}

.poster-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  max-width: 600px;
  margin: 0 auto;
}

.poster-card {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.poster-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.poster-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.poster-preview {
  width: 100%;
  height: auto;
  display: block;
  border-bottom: 1px solid var(--border-color);
}

.poster-label {
  display: block;
  padding: var(--spacing-md);
  text-align: center;
  font-weight: 600;
  color: var(--main-green);
  font-size: 0.95rem;
}

/* ========================================
   Store Apply Page (/stores/apply)
   ======================================== */
.section-store-apply {
  background-color: var(--white);
}

.apply-intro {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--spacing-xl);
}

.apply-intro h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--main-green);
  margin-bottom: var(--spacing-md);
}

.apply-intro p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-dark);
}

.posters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.poster-section {
  padding: var(--spacing-lg);
  border-radius: 16px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.poster-section.green {
  background-color: rgba(67, 130, 71, 0.1);
}

.poster-section.orange {
  background-color: rgba(233, 123, 42, 0.1);
}

.poster-section h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  text-align: center;
}

.poster-section.green h3 {
  color: var(--main-green);
}

.poster-section.orange h3 {
  color: var(--theater-orange);
}

.poster-section .poster-subtitle {
  font-size: 0.95rem;
  color: var(--text-light);
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.poster-preview {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.poster-preview img {
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  cursor: pointer;
  transition: var(--transition);
}

.poster-preview img:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.poster-download {
  text-align: center;
}

.btn-download {
  display: inline-block;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  text-decoration: none;
  border-radius: 8px;
  transition: var(--transition);
  cursor: pointer;
}

.btn-download.green {
  background-color: var(--main-green);
}

.btn-download.green:hover {
  background-color: #356835;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(67, 130, 71, 0.3);
}

.btn-download.orange {
  background-color: var(--theater-orange);
}

.btn-download.orange:hover {
  background-color: #d66a1f;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(233, 123, 42, 0.3);
}

.apply-form-section {
  background-color: var(--bg-light-green);
  padding: var(--spacing-xl);
  border-radius: 16px;
  max-width: 800px;
  margin: var(--spacing-xl) auto 0;
}

.apply-form-section h3 {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--main-green);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

.apply-form-section .form-intro {
  text-align: center;
  font-size: 1.05rem;
  color: var(--text-light);
  margin-bottom: var(--spacing-lg);
}

.store-apply-form {
  background-color: var(--white);
  padding: var(--spacing-lg);
  border-radius: 12px;
  border: 2px solid var(--main-green);
}

.form-group.radio-group {
  margin-bottom: var(--spacing-md);
}

.radio-options {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.radio-option {
  flex: 1;
  min-width: 200px;
}

.radio-option label {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
}

.radio-option input[type="radio"] {
  margin-right: 10px;
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.radio-option label:hover {
  border-color: var(--main-green);
  background-color: var(--bg-light-green);
}

.radio-option input[type="radio"]:checked + label,
.radio-option label:has(input[type="radio"]:checked) {
  border-color: var(--main-green);
  background-color: var(--bg-light-green);
}

/* ========================================
   Press Page (/press)
   ======================================== */
.section-press-page {
  background-color: var(--white);
}

.press-hero {
  text-align: center;
  padding: var(--spacing-xl) 0;
  background: linear-gradient(135deg, var(--bg-light-green) 0%, var(--white) 100%);
  margin-bottom: var(--spacing-xl);
}

.press-hero h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
}

.press-hero .hero-message {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--main-green);
  margin-bottom: var(--spacing-lg);
}

.press-hero .hero-description {
  max-width: 700px;
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-dark);
  text-align: left;
}

.press-about {
  background-color: rgba(67, 130, 71, 0.05);
  padding: var(--spacing-xl);
  border-radius: 16px;
  margin-bottom: var(--spacing-xl);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.press-about h2 {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--main-green);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

.press-about .about-content {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-dark);
  white-space: pre-line;
}

.press-screenshots {
  margin-bottom: var(--spacing-xl);
}

.press-screenshots h2 {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  max-width: 900px;
  margin: 0 auto;
}

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

.screenshot-item img {
  width: 100%;
  max-width: 300px;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  margin-bottom: var(--spacing-sm);
}

.screenshot-item .caption {
  font-size: 0.95rem;
  color: var(--text-light);
}

.press-steps {
  background-color: var(--bg-light-green);
  padding: var(--spacing-xl);
  border-radius: 16px;
  margin-bottom: var(--spacing-xl);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.press-steps h2 {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--main-green);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.steps-list {
  list-style: none;
  counter-reset: step-counter;
}

.step-item {
  counter-increment: step-counter;
  position: relative;
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  background-color: var(--white);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.step-item:last-child {
  margin-bottom: 0;
}

.step-item::before {
  content: counter(step-counter);
  position: absolute;
  top: var(--spacing-lg);
  left: var(--spacing-lg);
  width: 40px;
  height: 40px;
  background-color: var(--main-green);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
}

.step-content {
  margin-left: 60px;
}

.step-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: var(--spacing-sm);
}

.step-description {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.6;
  white-space: pre-line;
}

.press-form-section {
  background-color: var(--bg-light-green);
  padding: var(--spacing-xl);
  border-radius: 16px;
  max-width: 800px;
  margin: var(--spacing-xl) auto 0;
}

.press-form-section h2 {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--main-green);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

.press-form-section .form-intro {
  text-align: center;
  font-size: 1.05rem;
  color: var(--text-light);
  margin-bottom: var(--spacing-lg);
}

.press-apply-form {
  background-color: var(--white);
  padding: var(--spacing-lg);
  border-radius: 12px;
  border: 2px solid var(--main-green);
}

/* ========================================
   Responsive Design - Mobile First
   ======================================== */

/* Tablet: 768px and below */
@media (max-width: 768px) {
  :root {
    --spacing-lg: 32px;
    --spacing-xl: 48px;
  }

  .section-title {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  h3 {
    font-size: 1.3rem;
  }

  /* Header adjustments */
  .header {
    position: sticky;
    top: 0;
    display: block;
    max-width: none;
    padding: var(--spacing-sm) 0;
    overflow: visible;
  }

  .header-container {
    max-width: var(--max-width);
    margin: 0 auto;
    justify-content: space-between;
  }

  .header-appstore img {
    height: 28px;
  }

  /* Mobile: Show hamburger menu */
  .hamburger-menu {
    display: flex;
  }

  /* Mobile: Hamburger menu active state (X button) */
  .hamburger-menu.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

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

  .hamburger-menu.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  /* Mobile: Full-screen hamburger menu */
  .nav-menu {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(42, 42, 42, 0.98);
    backdrop-filter: blur(10px);
    padding: 0;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: scale(1.1);
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                visibility 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    overflow-y: auto;
    overflow-x: hidden;
    align-items: center;
    justify-content: center;
  }

  .nav-menu.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: scale(1);
  }

  .nav-menu ul {
    flex-direction: column;
    gap: 0;
    max-width: calc(100% - 48px);
    padding: 60px 24px;
    margin: 0 auto;
  }

  .nav-menu li {
    display: block;
    opacity: 0;
    transform: translateY(30px);
    border-bottom: none;
    width: 100%;
    margin-bottom: 12px;
  }

  .nav-menu li:last-child {
    margin-bottom: 0;
  }

  .nav-menu.active li {
    animation: slideInMenuItemFullscreen 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  }

  .nav-menu.active li:nth-child(1) {
    animation-delay: 0.1s;
  }

  .nav-menu.active li:nth-child(2) {
    animation-delay: 0.2s;
  }

  .nav-menu.active li:nth-child(3) {
    animation-delay: 0.3s;
  }

  .nav-menu.active li:nth-child(4) {
    animation-delay: 0.4s;
  }

  .nav-menu.active li:nth-child(5) {
    animation-delay: 0.5s;
  }

  @keyframes slideInMenuItemFullscreen {
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .nav-menu a {
    display: block;
    width: 100%;
    padding: 20px 24px;
    text-align: center;
    border-radius: 12px;
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
  }

  .nav-menu a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%) scaleX(0);
    width: 4px;
    height: 60%;
    background-color: var(--main-green);
    border-radius: 0 4px 4px 0;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: left;
  }

  .nav-menu a:hover::before {
    transform: translateY(-50%) scaleX(1);
  }

  .nav-menu a::after {
    display: none;
  }

  .nav-menu a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateX(8px);
  }

  /* Expandable menu items */
  .nav-menu .menu-item-expandable {
    position: relative;
    margin-bottom: 12px;
  }

  .nav-menu .menu-item-expandable > button {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 20px 24px;
    text-align: left;
    border-radius: 12px;
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    background: none;
    border: none;
    color: var(--white);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
  }

  .nav-menu .menu-item-expandable > button::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%) scaleX(0);
    width: 4px;
    height: 60%;
    background-color: var(--main-green);
    border-radius: 0 4px 4px 0;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: left;
  }

  .nav-menu .menu-item-expandable > button:hover {
    background-color: rgba(255, 255, 255, 0.1);
  }

  .nav-menu .menu-item-expandable > button:hover::before {
    transform: translateY(-50%) scaleX(1);
  }

  .nav-menu .menu-item-expandable .expand-icon {
    transition: transform 0.3s ease;
    font-size: 1rem;
    opacity: 0.7;
    margin-left: 8px;
  }

  .nav-menu .menu-item-expandable.expanded .expand-icon {
    transform: rotate(180deg);
  }

  .nav-menu .submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.3s ease,
                margin 0.3s ease;
    opacity: 0;
    margin: 0;
    padding: 0;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
  }

  .nav-menu .menu-item-expandable.expanded .submenu {
    max-height: 500px;
    opacity: 1;
    margin-top: 12px;
    padding: 8px 0;
  }

  .nav-menu .submenu li {
    opacity: 1;
    transform: none;
    animation: none;
    margin-bottom: 0;
  }

  .nav-menu .submenu a {
    font-size: 1rem;
    font-weight: 400;
    padding: 14px 24px 14px 36px;
    color: rgba(255, 255, 255, 0.85);
    border-radius: 8px;
    margin: 0 8px;
    display: block;
  }

  .nav-menu .submenu a:hover {
    color: var(--white);
    background-color: rgba(255, 255, 255, 0.12);
    transform: translateX(4px);
  }

  .nav-menu .submenu a::before {
    content: '→';
    margin-right: 10px;
    opacity: 0.6;
    font-size: 0.9rem;
  }

  /* Hero adjustments */
  .hero {
    min-height: 60vh;
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .hero-image {
    max-width: 600px;
  }

  /* Grid adjustments */
  .usecases-grid {
    grid-template-columns: 1fr;
  }

  .store-posters {
    grid-template-columns: 1fr;
  }

  .store-links {
    flex-direction: column;
    align-items: stretch;
  }

  .store-links .btn-secondary {
    width: 100%;
  }

  /* News adjustments */
  .news-item {
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
  }

  .news-date {
    min-width: auto;
    font-size: 0.85rem;
  }

  .news-title {
    font-size: 1rem;
  }

  /* Footer */
  .footer-nav ul {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  /* Press screenshots - mobile centering */
  .screenshots-grid {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: var(--spacing-xl);
  }

  .screenshot-item {
    width: 100%;
    max-width: 400px;
  }

  .screenshot-item img {
    margin-left: auto;
    margin-right: auto;
  }
}

/* Mobile: 480px and below */
@media (max-width: 480px) {
  :root {
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
  }

  .section-title {
    font-size: 1.5rem;
  }

  /* Header adjustments */
  .header-appstore img {
    height: 24px;
  }

  .header-right {
    gap: var(--spacing-sm);
  }

  .hero-image {
    max-width: 500px;
  }

  .app-icon {
    width: 80px;
    height: 80px;
  }

  .btn-appstore img {
    height: 35px;
  }

  .user-icons {
    gap: var(--spacing-md);
  }

  .user-icon {
    width: 80px;
    height: 80px;
  }

  .user-icon img {
    width: 48px;
    height: 48px;
  }

  .btn-primary,
  .btn-secondary {
    padding: 12px 24px;
    font-size: 0.95rem;
  }

  /* Press screenshots - smaller mobile screens */
  .screenshot-item {
    max-width: 350px;
  }
}

/* ========================================
   Animations & Transitions
   ======================================== */

/* Fade-in animation for scroll reveal */
.fade-in-target {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-target.fade-in {
  opacity: 1;
  transform: translateY(0);
}

/* Loading animation */
@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.loading {
  animation: spin 1s linear infinite;
}

/* Pulse animation for interactive elements */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

.pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* ========================================
   Form Notice (Temporary Disabled State)
   ======================================== */

/* お知らせボックス */
.form-notice-box {
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.notice-icon {
  display: none;
}

.form-notice-box h3 {
  color: #333;
  font-size: 1rem;
  font-weight: normal;
  margin-bottom: var(--spacing-sm);
}

.form-notice-box p {
  color: #555;
  line-height: 1.6;
  font-size: 0.95rem;
}

.email-info-box {
  margin: var(--spacing-md) 0;
}

.email-row {
  margin: var(--spacing-sm) 0;
  font-size: 0.95rem;
}

.email-row .label {
  font-weight: normal;
  color: #333;
}

.email-link {
  color: var(--main-green);
  text-decoration: underline;
}

.email-link:hover {
  text-decoration: none;
}

.subject-example {
  color: #666;
}

.response-time {
  color: #666;
  font-size: 0.9rem;
  margin-top: var(--spacing-sm);
  margin-bottom: 0;
}

/* 無効化されたフォーム */
.disabled-form {
  opacity: 0.6;
  pointer-events: none;
  position: relative;
}

/* お問い合わせ種類の選択は有効にする */
.disabled-form #inquiry-type {
  opacity: 1;
  pointer-events: auto;
  cursor: pointer;
}

.disabled-form::before {
  content: "（参考表示）";
  display: block;
  color: #999;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  text-align: center;
}

/* 送信ボタンを非表示 */
.disabled-form button[type="submit"],
.disabled-form .btn-primary {
  display: none;
}

/* モバイル対応 */
@media (max-width: 768px) {
  .form-notice-box h3 {
    font-size: 0.95rem;
  }

  .form-notice-box p,
  .email-row {
    font-size: 0.9rem;
  }
}