@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&family=Outfit:wght@500;700&display=swap');

/* =========================================================================
   Variables (Design Tokens) - Premium & Feminine Aesthetics
   ========================================================================= */
:root {
  /* Colors */
  --color-base: #FFFFFF;
  --color-text-main: #2C2C2C;
  --color-text-sub: #7A7A7A;

  /* Primary & Accent: Brand Blue & Sky Blue */
  --color-primary: #0097D8;
  /* Brand Blue */
  --color-primary-hover: #007BB0;
  --color-accent: #58C0E6;
  /* Sky Blue */

  /* Backgrounds */
  --color-bg-light: #FBF9F6;
  /* Pearl White / Ivory */
  --color-bg-dark: #2C3E50;
  /* Navy for high contrast / trust */

  /* Category Colors / Image Placeholder Accents */
  --color-gym: #3D5A80;
  --color-online: #E8A0A8;
  --color-shop: #81B29A;

  --ui-bg-blue: #EBF1F6;
  --ui-bg-pink: #FDF5F6;
  --ui-bg-green: #F2F8F5;

  --color-border: #EAEAEA;

  /* Typography */
  --font-family-base: 'Noto Sans JP', sans-serif;
  --font-family-heading: 'Outfit', 'Noto Sans JP', sans-serif;
  /* Premium English Accent */

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-section: 80px;

  /* Others */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  --border-radius-full: 9999px;
  --box-shadow-subtle: 0 4px 12px rgba(0, 0, 0, 0.03);
  --box-shadow-hover: 0 10px 24px rgba(0, 0, 0, 0.08);
  --box-shadow-gold: 0 10px 20px rgba(0, 151, 216, 0.2);
  --transition-base: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Mobile specific overrides */
@media (max-width: 768px) {
  :root {
    --spacing-section: 48px; /* Reduced for mobile */
  }
}

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

html,
body {
  overflow-x: hidden;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  color: var(--color-text-main);
  background-color: var(--color-base);
  line-height: 1.85; /* Slightly increased for better readability */
  letter-spacing: 0.03em; /* Elegant spacing */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding-bottom: 0;
}

h1, h2, h3, h4 {
  font-family: var(--font-family-heading);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.05em;
}

p {
  line-height: 1.85; /* Increased for better 40s female readability */
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-base);
}

ul,
ol {
  list-style: none;
}

button {
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

/* Typography Classes */
.font-serif {
  font-family: 'Noto Sans JP', sans-serif !important;
}

.text-brand,
.text-gold {
  color: var(--color-primary);
}

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

.font-bold {
  font-weight: 700;
}

.section-title__en {
  font-family: var(--font-family-heading);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  display: block;
  font-size: 0.9rem;
  margin-bottom: 8px;
}

/* =========================================================================
   Layout & Utilities
   ========================================================================= */
.container {
  width: 100%;
  max-width: 1200px;
  /* Optimized for both mobile and PC readability */
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-section) 0;
}

.bg-light {
  background-color: var(--color-bg-light);
}

.bg-dark {
  background-color: var(--color-bg-dark);
  color: #fff;
}

/* Prevent unnatural line breaks in Japanese text */
.hidden {
  display: none !important;
}

/* =========================================================================
   Utility Classes (Responsive & Display Control)
   ========================================================================= */
/* SP/PC Display Control */
.sp-only {
  display: block;
}

.pc-only {
  display: none;
}

@media (min-width: 768px) {
  .sp-only {
    display: none !important;
  }

  .pc-only {
    display: block !important;
  }
}

/* Inline block wrapper to prevent mid-word wrapping */
.ib, .no-split {
  display: inline-block;
}

/* =========================================================================
   Layout & Container
   ========================================================================= */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-base);
}

.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
  padding: 0 var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

.header__logo {
  font-family: var(--font-family-heading);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-text-main);
}

/* Hamburger Menu Button */
.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-main);
  margin: 2px 0;
  transition: var(--transition-base);
}

/* Menu Toggle Active State */
.menu-toggle.is-active span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

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

.menu-toggle.is-active span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Fullscreen Navigation Menu */
.nav-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--color-base);
  z-index: 999;
  display: flex;
  flex-direction: column;
  padding: 80px var(--spacing-xl) var(--spacing-xl);
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
}

.nav-menu.is-active {
  transform: translateX(0);
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xxl);
}

.nav-item a {
  font-family: var(--font-family-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-main);
  display: block;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.nav-item a:active,
.nav-item a:hover {
  color: var(--color-primary);
  padding-left: 8px;
}

.nav-sublist {
  margin-top: var(--spacing-sm);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  padding-left: var(--spacing-md);
}

.nav-sublist a {
  font-family: var(--font-family-base);
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--color-text-sub);
  border-bottom: none;
  padding: 4px 0;
}

/* =========================================================================
   Hero Section (Refined for Phase 2)
   ========================================================================= */
.hero {
  padding-top: clamp(80px, 12vh, 120px);
  padding-bottom: var(--spacing-section);
  display: flex;
  flex-direction: column;
  align-items: center;
  background: linear-gradient(180deg, var(--color-bg-light) 0%, var(--color-base) 100%);
}

.hero__badge-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.hero__badge {
  background-color: var(--color-base);
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  padding: 6px 16px;
  border-radius: var(--border-radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  box-shadow: var(--box-shadow-subtle);
}

.badge--tv {
  background-color: var(--color-primary);
  color: #fff;
}

.badge--book {
  border-color: var(--color-text-main);
  color: var(--color-text-main);
}

.hero__books-mockup {
  width: 100%;
  margin-bottom: var(--spacing-xl);
  border-radius: var(--border-radius-xl);
  transition: transform 0.3s ease;
}

.hero__books-mockup:hover {
  transform: translateY(-5px);
}

.hero__portrait img {
  transition: transform 0.5s ease;
}

.hero__portrait:hover img {
  transform: scale(1.02);
}

.hero__copy {
  font-size: 2rem;
  line-height: 1.4;
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.05em;
}

.hero__desc {
  font-size: 0.95rem;
  color: var(--color-text-sub);
  line-height: 1.8;
  margin-bottom: var(--spacing-xl);
}

/* =========================================================================
   Floating CTA (Hoshi Wataru Style)
   ========================================================================= */
.floating-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 12px var(--spacing-md) calc(12px + env(safe-area-inset-bottom));
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
  z-index: 999;
  border-top: 1px solid var(--color-border);
  pointer-events: none;
  /* Let clicks pass through to footer */
}

.floating-cta__inner {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: auto;
  /* Buttons are clickable */
}

.floating-cta__microcopy {
  font-size: 0.75rem;
  font-weight: 700;
  color: #E74C3C;
  margin-bottom: 6px;
  text-align: center;
}

.btn--floating {
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1a252f 100%);
  color: var(--color-primary);
  width: 100%;
  padding: 16px 20px;
  font-size: 1.1rem;
  box-shadow: 0 4px 15px rgba(44, 62, 80, 0.4);
  justify-content: space-between;
}

.btn--floating .arrow {
  font-size: 1.25rem;
}

/* =========================================================================
   Buttons
   ========================================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 18px 32px;
  border-radius: var(--border-radius-full);
  font-weight: 700;
  text-align: center;
  transition: var(--transition-base);
  cursor: pointer;
  width: 100%;
  max-width: 320px;
  min-height: 56px;
  margin: 12px auto;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, #007BB0 100%);
  color: #fff;
  box-shadow: var(--box-shadow-gold);
}

.btn--primary:active {
  transform: scale(0.98);
  box-shadow: none;
}

.btn--outline {
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

/* =========================================================================
   Section Titles
   ========================================================================= */
.section-title {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-title__en {
  font-size: 0.8rem;
  color: var(--color-primary);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 4px;
}

.section-title__jp {
  font-family: var(--font-family-heading);
  font-size: 1.75rem;
}

/* =========================================================================
   Before / After
   ========================================================================= */
.before-after-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 80px;
  /* Increased gap massively on mobile for clear separation */
  margin-top: 32px;
  margin-bottom: 80px;
}

@media (min-width: 768px) {
  .before-after-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.before-after-card {
  background: var(--color-base);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.04);
  border: 1px solid rgba(0, 0, 0, 0.03);
  display: flex;
  flex-direction: column;
}

.before-after-card__img {
  width: 100%;
  background-color: #f8f8f8;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-sub);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.before-after-card__img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  max-height: 400px;
  /* Prevent overly tall images */
  background: #f8f8f8;
}

.ba-img-container {
  display: flex;
  width: 100%;
  height: 100%;
}

.ba-img-container--single img {
  width: 100%;
}

.ba-img-container--double img {
  width: 50%;
  border-right: 2px solid #fff;
}

.ba-img-container--double img:last-child {
  border-right: none;
}

.before-after-card__content {
  padding: 40px 24px;
  text-align: left;
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: #FCFAFA;
  border-top: 4px solid var(--color-gym);
  color: #333;
  line-height: 1.9;
  letter-spacing: 0.03em;
  font-family: var(--font-family-base);
}

@media (min-width: 768px) {
  .before-after-grid--stacked {
    grid-template-columns: 1fr;
  }

  .before-after-card--horizontal {
    flex-direction: row;
    align-items: stretch;
  }

  .before-after-card--horizontal .before-after-card__img {
    width: 45%;
    flex-shrink: 0;
    max-height: none;
    border-right: 1px solid var(--color-border);
  }

  .before-after-card--horizontal .before-after-card__content {
    width: 55%;
    padding: var(--spacing-lg);
  }
}

.ba-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.ba-meta span {
  display: inline-flex;
  align-items: baseline;
  background: #FFF0F5;
  color: #D81B60;
  font-size: 1.05rem;
  /* Larger for 40s/50s eyes */
  font-weight: bold;
  padding: 8px 16px;
  border-radius: 9999px;
  border: 2px solid #F4C2C2;
  font-family: 'Noto Sans JP', sans-serif;
  box-shadow: 0 4px 12px rgba(216, 27, 96, 0.1);
  letter-spacing: 0.05em;
}

.ba-meta span .ba-number {
  font-size: 1.4rem;
  /* Impact for numbers */
  font-weight: 900;
  /* Extremely bold */
  margin: 0 4px;
  line-height: 1;
}

@media (min-width: 768px) {
  .ba-meta span {
    font-size: 0.95rem;
    padding: 6px 14px;
  }

  .ba-meta span .ba-number {
    font-size: 1.25rem;
  }
}

.ba-meta span:first-child {
  background: var(--color-text-main);
  color: #fff;
  border: 2px solid var(--color-text-main);
  font-size: 1rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* =========================================================================
   Service Cards (The Core Hub)
   ========================================================================= */
.service-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.service-card {
  background: var(--color-base);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--box-shadow-subtle);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  padding-bottom: var(--spacing-md);
  -webkit-tap-highlight-color: transparent;
  text-decoration: none;
  cursor: pointer;
}

.service-card:active {
  transform: scale(0.98);
}

.service-card--large {
  flex-direction: column;
  border: none;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  margin-bottom: var(--spacing-md);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease;
}

.service-card--large:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.service-card__image-container {
  width: 100%;
  aspect-ratio: 16/9;
  position: relative;
  overflow: hidden;
}

.service-card__image-container img {
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.service-card--large:hover .service-card__image-container img {
  transform: scale(1.05);
}

.service-card__image-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-text-sub);
  padding: var(--spacing-md);
}

.ui-bg-pink {
  background-color: var(--ui-bg-pink);
}

.ui-bg-blue {
  background-color: var(--ui-bg-blue);
}

.ui-bg-green {
  background-color: var(--ui-bg-green);
}

.service-card__content {
  padding: var(--spacing-xl) var(--spacing-lg);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  flex-grow: 1;
  background-color: var(--color-base);
}

.service-card__category {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
  color: var(--color-text-sub);
}

.service-card__title {
  font-family: var(--font-family-heading);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-main);
  line-height: 1.3;
}

.service-card__target {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-bg-light);
  width: 100%;
}

.service-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-sub);
  margin-bottom: var(--spacing-lg);
  line-height: 1.8;
}

.service-card__action {
  margin-top: auto;
  align-self: flex-start;
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--border-radius-full);
  background-color: var(--color-bg-light);
  transition: var(--transition-base);
}

.service-card__action::after {
  content: "→";
  transition: transform 0.2s;
}

.service-card--large:hover .service-card__action {
  transform: translateX(4px);
}

/* Modifier Colors for Large Cards */
.service-card--gym .service-card__category {
  color: var(--color-gym);
}

.service-card--gym .service-card__action {
  background-color: var(--color-gym);
  color: #fff;
}

.service-card--gym .service-card__target {
  border-bottom-color: var(--ui-bg-blue);
}

.service-card--online {
  box-shadow: 0 15px 40px rgba(232, 160, 168, 0.2);
  transform: translateY(-8px);
}

.service-card--online .service-card__category {
  color: var(--color-accent);
}

.service-card--online .service-card__action {
  background-color: var(--color-accent);
  color: #fff;
}

.service-card--online .service-card__target {
  border-bottom-color: var(--ui-bg-pink);
}

.service-card--shop .service-card__category {
  color: var(--color-shop);
}

.service-card--shop .service-card__action {
  background-color: var(--color-shop);
  color: #fff;
}

.service-card--shop .service-card__target {
  border-bottom-color: var(--ui-bg-green);
}

/* Ribbon Badge */
.badge-ribbon {
  position: absolute;
  top: 12px;
  left: -8px;
  background: #E74C3C;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  box-shadow: 0 4px 8px rgba(231, 76, 60, 0.3);
  z-index: 10;
}

.badge-ribbon::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 0;
  border-top: 6px solid #c0392b;
  border-left: 8px solid transparent;
}

.service-card--online {
  position: relative;
}

/* needed for ribbon */

/* =========================================================================
   Netflix-Style Horizontal Slider
   ========================================================================= */
.netflix-slider-container {
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  padding: 16px 0 32px;
}

/* Modifier when placed inside a card */
.netflix-slider-container--card {
  width: 100%;
  left: auto;
  right: auto;
  margin-left: 0;
  margin-right: 0;
  padding: 0 0 16px;
}

.netflix-slider {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  /* Firefox */
  gap: 16px;
  padding: 0 var(--spacing-md);
}

.netflix-slider::-webkit-scrollbar {
  display: none;
  /* Chrome, Safari */
}

.netflix-slider__placeholder {
  flex: 0 0 85%;
  /* Shows a peek of the next card on mobile */
  max-width: 320px;
  scroll-snap-align: center;
  background: var(--color-base);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
  cursor: pointer;
  position: relative;
}

@media (min-width: 768px) {
  .netflix-slider__placeholder {
    flex: 0 0 40%;
  }
}

.netflix-slider__placeholder:hover {
  transform: scale(1.02);
}

.netflix-slider__image {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  background-color: #EFEFEF;
  /* Fallback */
}

/* Play button overlay */
.netflix-slider__play-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  aspect-ratio: 16/9;
  display: flex;
  justify-content: center;
  align-items: center;
  background: rgba(0, 0, 0, 0.1);
  transition: background 0.3s ease;
}

.netflix-slider__placeholder:hover .netflix-slider__play-overlay {
  background: rgba(0, 0, 0, 0.3);
}

.netflix-slider__play-icon {
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--color-text-main);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s ease;
}

.netflix-slider__play-icon svg {
  width: 20px;
  height: 20px;
  margin-left: 2px;
  /* Visual center adjustment for play triangle */
}

.netflix-slider__placeholder:hover .netflix-slider__play-icon {
  transform: scale(1.1);
}

.netflix-slider__content {
  padding: 16px;
  background: var(--color-bg-dark);
  /* Netflix-ish dark bottom */
  color: #fff;
}

.netflix-slider__title {
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.netflix-slider__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
}

.netflix-slider__tag {
  background: var(--color-accent);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.65rem;
  letter-spacing: 0.05em;
}


/* =========================================================================
   Quick Concepts / Pain Points Links
   ========================================================================= */
.concept-links {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-sm);
}

.concept-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-base);
  border: 1px solid var(--color-border);
  padding: 16px var(--spacing-md);
  border-radius: var(--border-radius-md);
  font-weight: 700;
  color: var(--color-text-main);
  box-shadow: var(--box-shadow-subtle);
}

.concept-btn:active {
  background: var(--color-bg-light);
  transform: scale(0.99);
}

.concept-btn span {
  color: var(--color-primary);
}

/* =========================================================================
   Footer
   ========================================================================= */
.footer {
  background-color: var(--color-bg-dark);
  color: #fff;
  padding: var(--spacing-xxl) 0 var(--spacing-xxl);
  text-align: center;
  font-size: 0.85rem;
}

.footer__nav {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.footer__nav a {
  color: rgba(255, 255, 255, 0.8);
}

.footer__copy {
  opacity: 0.6;
  font-size: 0.75rem;
}

/* =========================================================================
   Customer Voice Readability
   ========================================================================= */
.customer-voice-text {
  font-size: 1.05rem;
  /* slightly larger base for mobile */
  font-weight: 500;
  /* Thicker base text to solve "thin lines" issue */
  color: #222;
  /* High contrast, dark text instead of faded gray */
  line-height: 2.2;
  /* wide line height for long text blocks */
  letter-spacing: 0.05em;
  /* slightly more spacing for readability */
}

.customer-voice-text p {
  margin-bottom: 28px !important;
  /* more breathing room between paragraphs */
}

.customer-voice-text strong,
.customer-voice-text .font-bold {
  font-weight: 900 !important;
  /* Make bold parts punchy and very dark */
  color: #000;
}

@media (min-width: 768px) {
  .customer-voice-text {
    font-size: 1rem;
    /* standard size on PC */
  }
}

/* =========================================================================
   Desktop / Tablet Tweaks (Mobile First Approach)
   ========================================================================= */
@media (min-width: 768px) {
  .hero__copy {
    font-size: 2.25rem;
  }

  .service-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .concept-links {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Hamburger Toggle Hidden on PC */
  .menu-toggle {
    display: none;
  }

  /* Global Navigation on PC */
  .nav-menu {
    position: static;
    height: auto;
    width: auto;
    background-color: transparent;
    padding: 0;
    transform: none;
    display: flex;
    flex-direction: row;
    align-items: center;
    overflow-y: visible;
  }

  .nav-list {
    flex-direction: row;
    gap: 24px;
    margin-bottom: 0;
  }

  .nav-item a {
    font-size: 0.95rem;
    padding: 0;
    border-bottom: none;
  }

  .nav-item a:hover {
    padding-left: 0;
  }

  /* Hide the CTA buttons inside nav-menu on PC since they take too much space, or adjust as needed */
  .nav-menu>div {
    display: none !important;
  }
}

/* =========================================================================
   Books & Media (Swiper Slider)
   ========================================================================= */
.swiper-books {
  width: 100%;
  padding-left: var(--spacing-md);
}

.swiper-books__slide {
  width: 40%;
  /* Mobile view: ~2.5 items visible */
  max-width: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .swiper-books__slide {
    width: 20%;
    max-width: 220px;
  }
}

.swiper-books__image-wrapper {
  width: 100%;
  aspect-ratio: 2 / 3;
  margin-bottom: var(--spacing-sm);
  border-radius: 4px;
  /* subtle curve on books */
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15), 5px 5px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
  background-color: #f0f0f0;
}

.swiper-books__slide:hover .swiper-books__image-wrapper {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2), 8px 8px 20px rgba(0, 0, 0, 0.15);
}

.swiper-books__image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.swiper-books__title {
  font-size: 0.8rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: var(--spacing-sm);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  height: 2.8em;
  /* Force consistent height for alignment */
  color: var(--color-text-main);
  padding: 0 4px;
}

.swiper-books__btn {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: var(--border-radius-full);
  padding: 4px 16px;
  transition: all 0.2s ease;
  margin-top: auto;
}

.swiper-books__btn:hover {
  background-color: var(--color-primary);
  color: #fff;
}

/* Force horizontal navigation and hide hamburger menu on PC */
@media (min-width: 768px) {

  #js-menu-toggle,
  .menu-toggle {
    display: none !important;
  }

  #js-nav-menu,
  .header__nav,
  .nav-menu {
    position: static !important;
    display: flex !important;
    flex-direction: row !important;
    height: auto !important;
    transform: none !important;
    padding: 0 !important;
    background: transparent !important;
    opacity: 1 !important;
    visibility: visible !important;
  }

  #js-nav-menu .nav-list,
  .header__nav .nav-list,
  .nav-menu .nav-list {
    flex-direction: row !important;
    gap: 24px !important;
    margin: 0 !important;
  }

  #js-nav-menu .nav-item a,
  .header__nav .nav-item a,
  .nav-menu .nav-item a {
    border-bottom: none !important;
    font-size: 1rem !important;
    padding: 0 !important;
  }
}

/* =========================================================================
   Utility Classes (Visibility)
   ========================================================================= */
.pc-only {
  display: block;
}

.sp-only {
  display: none !important;
}

@media (max-width: 768px) {
  .pc-only {
    display: none !important;
  }

  .sp-only {
    display: block !important;
  }

  br.sp-only {
    display: block !important;
  }
}