/* ==========================================================================
   CSS Custom Properties (Design Tokens)
   ========================================================================== */
:root {
  --bg-color: #FFFDF9;         /* あたたかい生成り色 */
  --bg-card: #FFFFFF;          /* カード用ホワイト */
  --text-color: #4A3E3D;       /* ダークブラウン（黒を避けて柔らかく） */
  --text-muted: #7A6C6B;       /* 薄いブラウン */
  --primary-color: #7C9D96;    /* くすみミントグリーン */
  --primary-hover: #5F7F78;    
  --secondary-color: #EAA297;  /* くすみコーラルピンク */
  --secondary-hover: #D68A7F;
  --accent-beige: #F5EBE6;     /* ミルクティーベージュ */
  --accent-pink-light: #FFF0ED;/* ごく薄いピンク */
  --line-color: #06C755;       /* LINE公式カラー */
  --line-hover: #05B04B;
  
  --font-family: 'Zen Maru Gothic', 'Quicksand', sans-serif;
  --border-radius-sm: 12px;
  --border-radius-md: 20px;
  --border-radius-lg: 32px;
  
  --shadow-sm: 0 4px 12px rgba(74, 62, 61, 0.04);
  --shadow-md: 0 8px 24px rgba(74, 62, 61, 0.06);
  --shadow-lg: 0 16px 40px rgba(74, 62, 61, 0.08);
  
  --transition: all 0.3s ease;
}

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

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

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-family);
  line-height: 1.8;
  letter-spacing: 0.03em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ==========================================================================
   Layout & Container
   ========================================================================== */
.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-padding {
  padding: 80px 0;
}

@media (max-width: 768px) {
  .section-padding {
    padding: 60px 0;
  }
}

/* Responsive Utilities */
.u-sp-only {
  display: inline;
}

@media (min-width: 769px) {
  .u-sp-only {
    display: none;
  }
}

/* ==========================================================================
   Typography & Headers
   ========================================================================== */
.section-title {
  font-size: 2rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 24px;
  position: relative;
  display: block;
  line-height: 1.4;
  overflow-wrap: break-word;
  word-break: break-all;
}

@media (max-width: 768px) {
  .section-title {
    font-size: 1.6rem;
  }
}


.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 48px;
  margin-top: -12px;
}

.highlight {
  position: relative;
  z-index: 1;
  display: inline-block;
}

.highlight::after {
  content: '';
  position: absolute;
  left: -2px;
  right: -2px;
  bottom: 4px;
  height: 10px;
  background-color: rgba(234, 162, 151, 0.25);
  border-radius: 4px;
  z-index: -1;
}

/* ==========================================================================
   Components (Buttons, Badges)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  text-align: center;
  vertical-align: middle;
  user-select: none;
  border: none;
  border-radius: 40px;
  padding: 16px 36px;
  font-size: 1.1rem;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.3s ease;
}

.btn--primary {
  background-color: var(--secondary-color);
  color: #FFFFFF;
}

.btn--primary:hover {
  background-color: var(--secondary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--line {
  background-color: var(--line-color);
  color: #FFFFFF;
  font-size: 1.2rem;
  padding: 18px 48px;
  box-shadow: 0 6px 20px rgba(6, 199, 85, 0.3);
}

.btn--line:hover {
  background-color: var(--line-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(6, 199, 85, 0.4);
}

.btn__line-icon {
  margin-right: 8px;
  font-size: 1.4rem;
}

.btn--small {
  padding: 10px 20px;
  font-size: 0.85rem;
  background-color: var(--line-color);
  color: #FFFFFF;
  border-radius: var(--border-radius-sm);
}

.btn--small:hover {
  background-color: var(--line-hover);
}

/* Bounce CTA animation */
@keyframes bounce-gentle {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.04);
  }
}

.btn--bounce {
  animation: bounce-gentle 3s ease-in-out infinite;
}

.btn--bounce:hover {
  animation-play-state: paused;
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 20px;
  color: #FFFFFF;
}

.badge--pink {
  background-color: var(--secondary-color);
}

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

/* Card classes */
.card-beige {
  background-color: var(--accent-beige);
  border-radius: var(--border-radius-md);
  padding: 40px;
  border: 2px dashed rgba(124, 157, 150, 0.3);
}

@media (max-width: 768px) {
  .card-beige {
    padding: 24px;
  }
}

/* ==========================================================================
   Header Styles
   ========================================================================== */
.header {
  background-color: rgba(255, 253, 249, 0.9);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(74, 62, 61, 0.05);
}

.header__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1000px;
  margin: 0 auto;
  padding: 12px 24px;
}

.header__logo {
  display: flex;
  flex-direction: column;
}

.header__logo-sub {
  font-size: 0.7rem;
  color: var(--secondary-color);
  font-weight: 700;
  letter-spacing: 0.1em;
}

.header__logo-main {
  font-family: 'Quicksand', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary-color);
  line-height: 1.1;
}

@media (max-width: 480px) {
  .header__container {
    gap: 12px;
  }

  .header__btn {
    max-width: 46%;
    padding: 9px 12px;
    font-size: 0.76rem;
    line-height: 1.35;
  }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  background-color: var(--accent-pink-light);
  position: relative;
  padding-top: 100px;
  padding-bottom: 120px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(rgba(234, 162, 151, 0.15) 2px, transparent 2px);
  background-size: 24px 24px;
  z-index: 0;
}

.hero__container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  align-items: center;
}

@media (max-width: 900px) {
  .hero {
    padding-top: 36px;
    padding-bottom: 80px;
  }
  .hero__container {
    display: flex;
    flex-direction: column;
    text-align: center;
    gap: 24px;
    padding: 0;
  }

  .hero__content {
    display: contents;
  }

  .hero__image-wrapper {
    order: 1;
    width: 100%;
  }

  .hero__tag {
    order: 2;
    margin-bottom: 0;
    margin-left: 24px;
    margin-right: 24px;
    display: none !important;
  }

  .hero__headline {
    order: 3;
    margin-bottom: 0;
    margin-left: 24px;
    margin-right: 24px;
    display: none !important;
  }

  .hero__subheadline {
    order: 4;
    margin-bottom: 0;
    margin-left: 24px;
    margin-right: 24px;
  }

  .hero__body {
    order: 5;
    margin-bottom: 0;
    margin-left: 24px;
    margin-right: 24px;
  }

  .hero__cta {
    order: 6;
    padding-left: 24px;
    padding-right: 24px;
  }
}

.hero__tag {
  display: inline-block;
  background-color: #FFFFFF;
  color: var(--primary-color);
  padding: 6px 16px;
  border-radius: var(--border-radius-sm);
  font-size: 0.9rem;
  font-weight: 700;
  border: 1px solid var(--primary-color);
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}

.hero__headline {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 24px;
  color: var(--text-color);
}

@media (max-width: 768px) {
  .hero__headline {
    font-size: 1.8rem;
  }
}

.hero__subheadline {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 24px;
  line-height: 1.6;
}

@media (max-width: 768px) {
  .hero__subheadline {
    font-size: 1.05rem;
  }
}

.hero__body {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 36px;
}

.hero__cta {
  display: flex;
}

@media (max-width: 900px) {
  .hero__cta {
    justify-content: center;
  }
}

.hero__image-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero__image-copy {
  display: none;
}

.hero__image {
  border-radius: 50% 50% 40% 40% / 40% 40% 60% 60%;
  border: 8px solid #FFFFFF;
  box-shadow: var(--shadow-lg);
  max-width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

@media (max-width: 900px) {
  .hero__image-wrapper::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255, 253, 249, 0.9) 0%, rgba(255, 253, 249, 0.72) 38%, rgba(255, 253, 249, 0.08) 74%);
    pointer-events: none;
  }

  .hero__image-copy {
    position: absolute;
    top: 22px;
    left: 18px;
    right: 18px;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
  }

  .hero__image-tag {
    display: inline-block;
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--primary-color);
    padding: 6px 14px;
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(124, 157, 150, 0.7);
    font-size: 0.78rem;
    font-weight: 800;
    line-height: 1.45;
    box-shadow: var(--shadow-sm);
  }

  .hero__image-headline {
    color: var(--text-color);
    font-size: 1.64rem;
    font-weight: 800;
    line-height: 1.35;
    text-shadow: 0 2px 10px rgba(255, 253, 249, 0.95);
  }

  .hero__image {
    width: 100%;
    max-width: none;
    border: none;
    border-radius: 0;
    box-shadow: none;
  }
}

@keyframes float-y {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ==========================================================================
   Problem Section
   ========================================================================== */
.problem {
  background-color: var(--bg-color);
}

.problem__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.problem__card {
  background-color: var(--bg-card);
  padding: 28px 24px;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--accent-beige);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.problem__text {
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1.7;
}

.problem__visual {
  max-width: 520px;
  margin: 0 auto 40px;
}

.problem__visual-image {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
}

.problem__summary {
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}

.problem__summary-text {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.6;
}

/* ==========================================================================
   Difference Section
   ========================================================================== */
.difference {
  background-color: #FFFDF9;
}

.difference__comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

@media (max-width: 768px) {
  .difference__comparison {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

.difference__card {
  background-color: var(--bg-card);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  border: 2px solid var(--accent-beige);
  display: flex;
  flex-direction: column;
}

.difference__card--ec {
  border-top: 6px solid var(--secondary-color);
}

.difference__card--lp {
  border-top: 6px solid var(--primary-color);
  box-shadow: var(--shadow-lg); /* Highlighted card */
  transform: scale(1.02);
}

@media (max-width: 768px) {
  .difference__card--lp {
    transform: scale(1);
  }
}

.difference__header {
  padding: 24px;
  text-align: center;
  border-bottom: 1px solid rgba(74, 62, 61, 0.05);
}

.difference__header h3 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.difference__tagline {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 700;
}

.difference__body {
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.difference__desc {
  font-size: 0.95rem;
  margin-bottom: 24px;
  flex-grow: 1;
}

.difference__point {
  display: flex;
  align-items: center;
  background-color: var(--bg-color);
  padding: 12px 16px;
  border-radius: var(--border-radius-sm);
  gap: 12px;
}

.difference__point p {
  font-size: 0.9rem;
  font-weight: 700;
}

/* ==========================================================================
   Why LP Section
   ========================================================================== */
.why-lp {
  background-color: var(--accent-pink-light);
  position: relative;
}

.why-lp::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(rgba(124, 157, 150, 0.1) 2px, transparent 2px);
  background-size: 20px 20px;
}

.why-lp__box {
  background-color: #FFFFFF;
  border-radius: var(--border-radius-lg);
  padding: 50px 40px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--accent-beige);
  position: relative;
  z-index: 1;
}

@media (max-width: 768px) {
  .why-lp__box {
    padding: 36px 20px;
  }

  .why-lp__content,
  .why-lp__text {
    text-align: left;
  }
}

.why-lp__title {
  font-size: 1.8rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 30px;
  color: var(--primary-color);
  line-height: 1.4;
}

@media (max-width: 768px) {
  .why-lp__title {
    font-size: 1.4rem;
  }
}

.why-lp__text {
  font-size: 1rem;
  margin-bottom: 24px;
  color: var(--text-color);
}

.why-lp__highlight {
  font-size: 1.1rem;
  font-weight: 700;
  text-align: center;
  color: var(--secondary-color);
  background-color: var(--accent-pink-light);
  padding: 20px;
  border-radius: var(--border-radius-md);
  margin-top: 36px;
  line-height: 1.7;
}

@media (max-width: 768px) {
  .why-lp__highlight {
    font-size: 0.95rem;
    padding: 16px;
    text-align: left;
  }
}

/* ==========================================================================
   Flow Section
   ========================================================================== */
.flow {
  background-color: var(--bg-color);
}

.flow__container {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 40px;
  align-items: center;
}

@media (max-width: 900px) {
  .flow__container {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

.flow__visual {
  display: flex;
  justify-content: center;
}

.flow__image {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  border: 6px solid #FFFFFF;
}

@media (max-width: 900px) {
  .flow__image {
    max-width: 320px;
  }
}

.flow__steps {
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
}

.flow__steps::before {
  content: '';
  position: absolute;
  top: 10px;
  left: 20px;
  bottom: 10px;
  width: 2px;
  border-left: 2px dashed var(--secondary-color);
  z-index: 0;
}

.flow__step {
  display: flex;
  gap: 20px;
  position: relative;
  z-index: 1;
}

.flow__step:last-child::after {
  content: '';
  position: absolute;
  top: 42px;
  bottom: -20px;
  left: 17px;
  width: 8px;
  background-color: var(--bg-color);
  z-index: 1;
}

.flow__step-num {
  width: 42px;
  height: 42px;
  background-color: var(--secondary-color);
  border-radius: 50%;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Quicksand', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
  border: 3px solid var(--bg-color);
  position: relative;
  z-index: 2;
}

.flow__step-content h4 {
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.flow__step-content p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ==========================================================================
   Features Section
   ========================================================================== */
.features {
  background-color: var(--accent-beige);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.features__item {
  background-color: #FFFFFF;
  padding: 30px 24px;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(124, 157, 150, 0.15);
}

.features__header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.features__header .material-symbols-rounded {
  color: var(--primary-color);
  font-size: 2.2rem;
  flex-shrink: 0;
}

.features__item h4 {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 0;
  color: var(--primary-color);
  line-height: 1.4;
}

.features__item p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   Recommend Section
   ========================================================================== */
.recommend {
  background-color: var(--bg-color);
}

.recommend__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.recommend__card {
  background-color: #FFFFFF;
  border-radius: var(--border-radius-md);
  padding: 18px 18px 26px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--accent-beige);
  display: flex;
  flex-direction: column;
  gap: 20px;
  overflow: hidden;
}

.recommend__image {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--border-radius-sm);
  background-color: var(--accent-pink-light);
}

.recommend__body {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.recommend__card h4 {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.recommend__card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .recommend__grid {
    grid-template-columns: 1fr;
  }

  .recommend__card {
    display: grid;
    grid-template-columns: 34% 1fr;
    align-items: center;
    gap: 16px;
    padding: 14px;
  }

  .recommend__image {
    height: 100%;
    min-height: 116px;
    aspect-ratio: 1 / 1;
  }

  .recommend__card h4 {
    font-size: 1rem;
    margin-bottom: 8px;
  }

  .recommend__card p {
    font-size: 0.85rem;
    line-height: 1.55;
  }
}

/* ==========================================================================
   Message Section
   ========================================================================== */
.message {
  background-color: var(--bg-color);
}

.message__container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

@media (max-width: 900px) {
  .message__container {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

.message__title {
  font-size: 1.8rem;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 24px;
}

@media (max-width: 768px) {
  .message__title {
    font-size: 1.12rem;
    line-height: 1.5;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .message__container.card-beige {
    padding-left: 18px;
    padding-right: 18px;
  }
}

.message__body {
  font-size: 0.95rem;
  margin-bottom: 20px;
  color: var(--text-color);
}

.message__body:last-child {
  margin-bottom: 0;
}

.message__image-wrapper {
  display: flex;
  justify-content: center;
}

.message__image {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  border: 6px solid #FFFFFF;
}

@media (max-width: 900px) {
  .message__image {
    max-width: 280px;
  }
}

/* ==========================================================================
   Contact & CTA Section
   ========================================================================== */
.contact {
  background-color: var(--accent-pink-light);
  position: relative;
  overflow: hidden;
}

.contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(rgba(234, 162, 151, 0.12) 2px, transparent 2px);
  background-size: 24px 24px;
}

.contact__box {
  background-color: #FFFFFF;
  border-radius: var(--border-radius-lg);
  padding: 60px 40px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--accent-beige);
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

@media (max-width: 768px) {
  .contact__box {
    padding: 40px 20px;
  }
}

.contact__tag {
  display: inline-block;
  color: var(--secondary-color);
  font-family: 'Quicksand', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  position: relative;
}

.contact__title {
  font-size: 2rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 20px;
  line-height: 1.4;
}

@media (max-width: 768px) {
  .contact__title {
    font-size: 1.5rem;
  }
}

.contact__desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 36px;
}

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

.contact__line-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 12px;
}

/* ==========================================================================
   Footer Section
   ========================================================================== */
.footer {
  background-color: var(--accent-beige);
  padding: 60px 0 40px;
  border-top: 1px solid rgba(74, 62, 61, 0.05);
}

.footer__content {
  text-align: center;
}

.footer__logo {
  font-family: 'Quicksand', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color);
  display: inline-block;
  margin-bottom: 8px;
}

.footer__desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.footer__sns {
  margin-bottom: 30px;
}

.footer__sns-link {
  display: inline-flex;
  align-items: center;
  background-color: #FFFFFF;
  padding: 8px 20px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 700;
  border: 1px solid rgba(74, 62, 61, 0.05);
}

.footer__sns-link:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
  border-color: var(--secondary-color);
}

.footer__sns-handle {
  color: var(--secondary-color);
  margin-left: 6px;
}

.footer__copyright {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Scroll Animations (Fade In)
   ========================================================================== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
  pointer-events: none; /* Prevent click before load */
}

.fade-in.active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* ==========================================================================
   Google Material Symbols Rounded Styles
   ========================================================================== */
.material-symbols-rounded {
  font-family: 'Material Symbols Rounded';
  font-weight: normal;
  font-style: normal;
  font-size: 2.2rem;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-feature-settings: 'liga';
  -webkit-font-smoothing: antialiased;
  color: var(--secondary-color); /* やさしいピンクを標準に */
}

/* ==========================================================================
   Responsive Heading and Font adjustments
   ========================================================================== */

/* PC用調整 */
@media (min-width: 769px) {
  /* メッセージセクションの見出しを全幅化して横一行に */
  .message__title {
    grid-column: 1 / -1;
    text-align: center;
    margin-bottom: 36px;
    font-size: 2rem;
  }
  
  /* 本文テキストサイズを16px(1rem)に設定 */
  .problem__text,
  .difference__desc,
  .flow__step-content p,
  .features__item p,
  .recommend__card p,
  .message__body,
  .contact__desc {
    font-size: 1rem;
  }
}

/* スマホ用調整 */
@media (max-width: 768px) {
  .problem__grid {
    grid-template-columns: 1fr;
    gap: 14px;
    margin-bottom: 24px;
  }

  .problem__card {
    padding: 20px 18px;
  }

  .problem__text {
    font-size: 0.95rem;
    line-height: 1.65;
  }

  .problem__visual {
    max-width: 320px;
    margin-bottom: 32px;
  }

  /* 特徴カード内のアイコンとタイトルをスマホでも確実に横並びに */
  .features__item {
    padding: 24px 16px; /* 横幅スペースを広げる */
  }
  
  .features__header {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
  }
  
  .features__header .material-symbols-rounded {
    font-size: 1.8rem; /* アイコンをやや縮小 */
  }
  
  .features__item h4 {
    font-size: 1rem; /* 見出し文字をやや縮小 */
  }
}