* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;
        color: #333;
        line-height: 1.8;
    }

    .hero {
        background: linear-gradient(135deg, #ffd6e8 0%, #e8d5ff 50%, #d5e8ff 100%);
        padding: 60px 20px 80px;
        text-align: center;
        position: relative;
        overflow: hidden;
    }

    .hero::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 70%);
        animation: pulse 15s ease-in-out infinite;
    }

    @keyframes pulse {
        0%, 100% { transform: scale(1); opacity: 0.5; }
        50% { transform: scale(1.2); opacity: 0.8; }
    }

    .hero-content {
        position: relative;
        z-index: 1;
        max-width: 1200px;
        margin: 0 auto;
    }

    .logo {
        max-width: 400px;
        width: 100%;
        height: auto;
        margin: 0 auto 30px;
        display: block;
    }

    .catchcopy {
        font-size: 2rem;
        margin-bottom: 20px;
        color: #ff6b9d;
        font-weight: 900;
        line-height: 1.4;
        text-shadow: 2px 2px 4px rgba(255,255,255,0.8);
    }

    .tagline {
        font-size: 1.3rem;
        margin-bottom: 15px;
        color: #555;
        font-weight: 600;
    }

    .subtitle {
        font-size: 1.1rem;
        margin-bottom: 50px;
        color: #666;
        line-height: 1.6;
    }

    .product-visual {
        max-width: 900px;
        margin: 0 auto 40px;
        background: white;
        border-radius: 30px;
        padding: 50px 40px;
        box-shadow: 0 20px 60px rgba(0,0,0,0.15);
    }

    .rope-display {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 25px;
        margin-bottom: 25px;
    }

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

    .rope {
        width: 100%;
        height: auto;
        border-radius: 15px;
        box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        transition: transform 0.3s ease;
    }

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

    .color-label {
        text-align: center;
        font-size: 0.9rem;
        color: #888;
        margin-top: 12px;
        font-weight: 500;
    }

    .visual-note {
        color: #ff6b9d;
        font-size: 1rem;
        font-weight: 600;
    }

    .problem-section {
        padding: 80px 20px;
        background: white;
        text-align: center;
    }

    .problem-content {
        max-width: 900px;
        margin: 0 auto;
    }

    .problem-title {
        font-size: 2.2rem;
        margin-bottom: 30px;
        color: #333;
        font-weight: 700;
    }

    .problem-list {
        display: grid;
        gap: 20px;
        margin: 40px auto;
        text-align: left;
    }

    .problem-item {
        background: linear-gradient(135deg, #fff5f9 0%, #f5f0ff 100%);
        padding: 25px 30px;
        border-radius: 15px;
        font-size: 1.1rem;
        color: #555;
        border-left: 5px solid #ff6b9d;
        display: flex;
        align-items: center;
        gap: 15px;
    }

    .problem-item::before {
        content: '😞';
        font-size: 2rem;
        flex-shrink: 0;
    }

    .solution-text {
        font-size: 1.8rem;
        color: #ff6b9d;
        font-weight: 700;
        margin: 50px 0 30px;
    }

    .features-intro {
        padding: 80px 20px;
        background: linear-gradient(135deg, #ffeef5 0%, #f0e6ff 100%);
        text-align: center;
    }

    .features-intro img {
        max-width: 900px;
        width: 100%;
        height: auto;
        border-radius: 20px;
        box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    }

    .detail-section {
        padding: 80px 20px;
        background: white;
    }

    .detail-content {
        max-width: 1200px;
        margin: 0 auto;
    }

    .section-title {
        text-align: center;
        font-size: 2.5rem;
        margin-bottom: 20px;
        color: #6b5b95;
        font-weight: 700;
    }

    .section-subtitle {
        text-align: center;
        font-size: 1.1rem;
        color: #666;
        margin-bottom: 60px;
        line-height: 1.8;
    }

    .detail-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
        gap: 50px;
        margin-bottom: 60px;
    }

    .detail-item {
        background: white;
        border-radius: 25px;
        overflow: hidden;
        box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        transition: transform 0.3s ease;
    }

    .detail-item:hover {
        transform: translateY(-5px);
    }

    .detail-item img {
        width: 100%;
        height: auto;
        display: block;
    }

    .benefits {
        padding: 80px 20px;
        background: linear-gradient(135deg, #ffeef5 0%, #f0e6ff 100%);
    }

    .benefits-content {
        max-width: 1200px;
        margin: 0 auto;
    }

    .benefit-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        gap: 40px;
    }

    .benefit-card {
        background: white;
        padding: 40px 30px;
        border-radius: 25px;
        text-align: center;
        box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        transition: transform 0.3s ease;
    }

    .benefit-card:hover {
        transform: translateY(-5px);
    }

    .benefit-icon {
        font-size: 3.5rem;
        margin-bottom: 20px;
    }

    .benefit-title {
        font-size: 1.5rem;
        font-weight: 700;
        margin-bottom: 15px;
        color: #6b5b95;
    }

    .benefit-desc {
        color: #666;
        font-size: 1.05rem;
        line-height: 1.8;
    }

    .exercise-section {
        padding: 80px 20px;
        background: white;
    }

    .exercise-content {
        max-width: 1200px;
        margin: 0 auto;
    }

    .exercise-intro {
        text-align: center;
        font-size: 1.2rem;
        color: #666;
        margin-bottom: 50px;
        line-height: 1.8;
    }

    .exercise-grid {
        display: grid;
        gap: 40px;
    }

    .exercise-item {
        background: linear-gradient(135deg, #fff5f9 0%, #f5f0ff 100%);
        border-radius: 25px;
        overflow: hidden;
        box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    }

    .exercise-item img {
        width: 100%;
        height: auto;
        display: block;
    }

    .comparison-section {
        padding: 80px 20px;
        background: linear-gradient(135deg, #ffeef5 0%, #f0e6ff 100%);
        text-align: center;
    }

    .comparison-highlight {
        font-size: 1.3rem;
        color: #555;
        margin-bottom: 40px;
        line-height: 1.8;
        max-width: 800px;
        margin: 0 auto 40px;
    }

    .comparison-highlight strong {
        color: #ff6b9d;
        font-size: 1.5rem;
        font-weight: 900;
    }

    .specs-section {
        padding: 80px 20px;
        background: white;
    }

    .specs-content {
        max-width: 1200px;
        margin: 0 auto;
    }

    .specs-image-container {
        text-align: center;
        margin-bottom: 50px;
    }

    .specs-image-container img {
        max-width: 800px;
        width: 100%;
        height: auto;
        border-radius: 20px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    }

    .spec-list {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 30px;
    }

    .spec-item {
        background: linear-gradient(135deg, #fff5f9 0%, #f5f0ff 100%);
        padding: 30px;
        border-radius: 20px;
        border-left: 5px solid #ff6b9d;
    }

    .spec-label {
        font-weight: 700;
        color: #6b5b95;
        margin-bottom: 8px;
        font-size: 1.1rem;
    }

    .spec-value {
        color: #666;
        font-size: 1rem;
    }

    .footer {
        background: #2c2c2c;
        color: #aaa;
        text-align: center;
        padding: 40px 20px;
    }

    @media (max-width: 768px) {
        .logo { max-width: 250px; }
        .catchcopy { font-size: 1.5rem; }
        .tagline { font-size: 1.1rem; }
        .subtitle { font-size: 1rem; }
        .section-title { font-size: 1.8rem; }
        .rope-display { grid-template-columns: repeat(2, 1fr); gap: 20px; }
        .detail-grid { grid-template-columns: 1fr; }
        .benefit-grid { grid-template-columns: 1fr; }
    }
/* ==========================================================================
   CSS Variables
   ========================================================================== */

:root {
  --color-dark: #0a0a0a;
  --color-medium: #666;
  --color-light: #999;
  --color-accent: #2c2c2c;
  --color-bg: #fafafa;
  --spacing-xs: 1rem;
  --spacing-sm: 2rem;
  --spacing-md: 4rem;
  --spacing-lg: 6rem;
  --spacing-xl: 8rem;
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding-top: 60px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--color-dark);
  background: #fff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 画像の最適化 */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* will-changeでパフォーマンス向上 */
.site-nav,
.product-feature-card,
.about-cta-button {
  will-change: transform;
}

/* ==========================================================================
   Navigation (Header)
   ========================================================================== */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #eee;
}

.site-nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0rem 0.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

@media (max-width: 640px) {
  .site-nav-inner {
    padding: 0rem 0.5rem;
  }
}

.site-nav-logo {
  /* ロゴは中央に配置されるので追加のスタイル不要 */
}

.site-nav-link {
  position: absolute;
  right: 0.5rem;
  color: var(--color-medium);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.3s;
}

.site-nav-link:hover {
  color: var(--color-dark);
}

.logo_style_60 {
  height: 60px;
  display: block;
}

.logo_style_100 {
  height: 100px;
  margin: 0 auto;
  display: block;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  padding: 4rem 2rem;
  background: var(--color-dark);
  color: #fff;
  text-align: center;
}

.site-footer-brand {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.site-footer-text {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  margin: 0.5rem 0;
}

.site-footer-link {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color 0.3s;
}

.site-footer-link:hover {
  color: #fff;
  text-decoration: underline;
}

.site-footer-links {
  margin: 1.5rem 0;
}

.site-footer-divider {
  margin: 0 1rem;
  color: rgba(255, 255, 255, 0.3);
}

.site-footer-contact {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.line_qr{
  margin: 0 auto;
  height: 100px;
}
/* ==========================================================================
   Common Section Styles
   ========================================================================== */

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-light);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--color-medium);
  margin-bottom: 4rem;
}

/* ==========================================================================
   Hero Sections (Shared)
   ========================================================================== */

.hero-section {
  padding: 10rem 2rem 6rem;
  background: linear-gradient(180deg, #fafafa 0%, #fff 100%);
}

.hero-inner {
  max-width: 1400px;
  margin: 0 auto;
}

.hero-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-light);
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-dark);
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.3rem;
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-medium);
}

/* ==========================================================================
   Content Sections
   ========================================================================== */

.content-section {
  padding: var(--spacing-xl) 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.content-section.alt {
  background: var(--color-bg);
}

/* ==========================================================================
   Grid Layouts
   ========================================================================== */

.grid-2col {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 6rem;
  align-items: start;
}

.grid-2col-reverse {
  grid-template-columns: 2fr 1fr;
}

@media (max-width: 968px) {
  .grid-2col,
  .grid-2col-reverse {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

/* ==========================================================================
   Image Containers
   ========================================================================== */

.image-container {
  margin: 3rem 0;
  border-radius: 8px;
  overflow: hidden;
}

.content-image {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.5s ease;
}

.image-container:hover .content-image {
  transform: scale(1.02);
}

/* ==========================================================================
   Product Page Specific Styles
   ========================================================================== */

/* Hero */
.product-hero {
  padding: 1rem 2rem;
  background: linear-gradient(180deg, #fafafa 0%, #fff 100%);
}

.product-hero-inner {
  max-width: 1400px;
  margin: 0 auto;
}

.product-hero-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-light);
  margin-bottom: 1.5rem;
}

.product-hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-dark);
  margin-bottom: 1.5rem;
  max-width: 900px;
}

.product-hero-subtitle {
  font-size: 1.3rem;
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-medium);
  margin-bottom: 1rem;
  max-width: 700px;
}

.product-hero-description {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--color-medium);
  max-width: 650px;
}


.product-hero-image img {
    max-width: 75%;
    height: auto;
    border-radius: 8px;
    transform: rotate(270deg);
    margin: 0 auto;
}

/* Colors */
.product-colors {
  margin-top: 4rem;
}

.product-colors-label {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-light);
  margin-bottom: 2rem;
}

.product-colors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  max-width: 1000px;
}

.product-color-item {
  text-align: center;
}

.product-color-item img {
  width: 100%;
  max-width: 200px;
  height: auto;
  margin-bottom: 1rem;
}

.product-color-name {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-dark);
}

/* Problem Section */
.product-problem {
  padding: 8rem 2rem;
  background: var(--color-dark);
  color: #fff;
}

.product-problem-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.product-problem-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 3rem;
}

.product-problem-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.product-problem-item {
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  border-left: 3px solid #fff;
  font-size: 1rem;
  line-height: 1.6;
}

.product-problem-cta {
  font-size: 1.2rem;
  font-weight: 500;
  margin-top: 3rem;
}

/* Features */
.product-features {
  padding: 8rem 2rem;
  background: #fff;
}

.product-features-inner {
  max-width: 1400px;
  margin: 0 auto;
}

.product-card-image img{
  border-radius: 1rem;
}

.product-section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-light);
  margin-bottom: 1rem;
}

.product-section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
}

.product-section-subtitle {
  font-size: 1.2rem;
  color: var(--color-medium);
  margin-bottom: 4rem;
}

.product-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
}

.product-feature-card {
  padding: 2.5rem 2rem;
  border: 1px solid #eee;
  transition: all 0.3s ease;
}

.product-feature-card:hover {
  border-color: var(--color-dark);
  transform: translateY(-4px);
}

.product-feature-icon {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.product-feature-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--color-dark);
}

.product-feature-desc {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-medium);
  margin: 0;
}

/* Detail Section */
.product-detail {
  padding: 8rem 2rem;
  background: var(--color-bg);
}

.product-detail-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.product-detail-content {
  margin-bottom: 6rem;
}

.product-detail-image {
  text-align: center;
  margin-top: 3rem;
}

.product-detail-image img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

/* Specs */
.product-specs {
  padding: 8rem 2rem;
  background: #fff;
}

.product-specs-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.product-specs-image {
  text-align: center;
  margin: 3rem 0 5rem;
}

.product-specs-image img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

.product-specs-table {
  max-width: 800px;
  margin: 0 auto;
}

.product-spec-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid #eee;
}

.product-spec-row:first-child {
  border-top: 1px solid #eee;
}

.product-spec-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-dark);
}

.product-spec-value {
  font-size: 0.95rem;
  color: var(--color-medium);
}

/* ==========================================================================
   About Page Specific Styles
   ========================================================================== */

.about-container {
  background: #fff;
  min-height: 100vh;
}

.about-hero {
  padding: 10rem 2rem 8rem;
  background: linear-gradient(180deg, #fafafa 0%, #fff 100%);
  border-bottom: 1px solid #eee;
}

.about-hero-inner {
  max-width: 1000px;
  margin: 0 auto;
  background-image: url(/assets/logo_lightgray-fcf49e8d107f2a4b46dd8bb67a970250b71667543d168067f37e5a1ab80aaa7b.png);
  background-repeat:no-repeat;
  background-position: center;
  background-size:contain; 
}

.about-hero-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-light);
  margin-bottom: 2rem;
}

.about-hero-title {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-dark);
  margin-bottom: 2rem;
}

.about-hero-subtitle {
  font-size: 1.5rem;
  font-weight: 300;
  line-height: 1.6;
  color: var(--color-medium);
  max-width: 600px;
}

.about-section {
  padding: var(--spacing-xl) 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.about-section.alt {
  background: var(--color-bg);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 6rem;
  align-items: start;
}

.about-grid-reverse {
  grid-template-columns: 2fr 1fr;
}

.about-label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-light);
  position: sticky;
  top: 120px;
}

.about-content h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--color-dark);
  margin-bottom: 2rem;
}

.about-content p {
  font-size: 1.1rem;
  line-height: 1.9;
  color: var(--color-medium);
  margin-bottom: 1.5rem;
}

.about-content p.lead {
  font-size: 1.4rem;
  font-weight: 500;
  line-height: 1.7;
  color: var(--color-accent);
}

.about-quote {
}

.about-quote-text {
  font-size: 1.8rem;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: -0.01em;
  margin: 0;
}

.about-promises {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  margin-top: 4rem;
}

.about-promise {
  position: relative;
}

.about-promise-number {
  font-size: 3rem;
  font-weight: 800;
  color: #f0f0f0;
  margin-bottom: 1rem;
}

.about-promise h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 1rem;
}

.about-promise p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-medium);
}

.about-values {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  margin-top: 4rem;
}

.about-value {
  padding: 3rem;
  border: 1px solid #eee;
  border-left: 4px solid var(--color-dark);
}

.about-value h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 1rem;
}

.about-value p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-medium);
  margin: 0;
}

.about-cta {
  padding: 8rem 2rem;
  text-align: center;
  background: var(--color-medium);
  color: #fff;
}

.about-cta-inner {
  max-width: 800px;
  margin: 0 auto;
  background-image: url(/assets/logo_gray-99c980dc717475ae5e0cea0c362192e3b3bb2b870afb15cd7ab1d2febcaea331.png);
  background-repeat:no-repeat;
  background-position: center;
  background-size:contain; 
}

.about-cta h2 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.about-cta p {
  font-size: 1.2rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 3rem;
}

.about-cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.25rem 3rem;
  background: #fff;
  color: var(--color-dark);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 50px;
  transition: all 0.3s ease;
}

.about-cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.about-image-container {
  margin: 3rem 0;
  border-radius: 8px;
  overflow: hidden;
}

.about-content-image {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.5s ease;
}

.about-image-container:hover .about-content-image {
  transform: scale(1.02);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 968px) {
  body {
    padding-top: 60px;
  }

  .about-grid,
  .about-grid-reverse {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .about-promises {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-values {
    grid-template-columns: 1fr;
  }

  .product-spec-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .product-hero,
  .about-hero {
    padding: 4rem 1.5rem;
  }

  .product-features,
  .product-detail,
  .product-specs,
  .about-section {
    padding: 4rem 1.5rem;
  }

  .product-problem,
  .about-cta {
    padding: 4rem 1.5rem;
  }
}

@media (max-width: 640px) {
  .hero-title,
  .product-hero-title,
  .about-hero-title {
    font-size: 2rem;
  }

  .section-title,
  .product-section-title,
  .about-content h2 {
    font-size: 1.75rem;
  }

  .product-colors-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .product-features-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .product-problem-list {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .about-label {
    position: static;
    margin-bottom: 1rem;
  }

  .about-promise-number {
    font-size: 2rem;
  }

  .about-value {
    padding: 2rem 1.5rem;
  }

  .site-footer {
    padding: 3rem 1.5rem;
  }
}

/* タッチデバイス最適化 */
@media (hover: none) and (pointer: coarse) {
  .product-feature-card,
  .site-nav-link,
  .site-nav-logo,
  .site-footer-link,
  .about-cta-button {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
  }
}

/* 高解像度ディスプレイ対応 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
}

/* ========================================
   Product Purchase Box
   ======================================== */

.product-purchase-box {
  max-width: 600px;
  margin: 0 auto ;
  padding: 1rem 3rem;
  background: #ffffff;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

/* Price Section */
.product-price-section {
  text-align: center;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid #f0f0f0;
}

.product-price-label {
  font-size: 0.875rem;
  color: #666;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.product-price-amount {
  font-size: 2.5rem;
  font-weight: 700;
  color: #1a1a1a;
  letter-spacing: -0.02em;
}

.product-price-tax {
  font-size: 1rem;
  font-weight: 400;
  color: #666;
  margin-left: 0.5rem;
}

/* Purchase Button */
.product-purchase-button {
  width: 100%;
  padding: 1.25rem 2rem;
  background: #1a1a1a;
  color: #ffffff;
  border: none;
  border-radius: 6px;
  font-size: 1.125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  position: relative;
  overflow: hidden;
}

.product-purchase-button:hover:not(.disabled) {
  background: #333;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.product-purchase-button.disabled {
  background: #e5e5e5;
  color: #999;
  cursor: not-allowed;
  opacity: 0.7;
}

.button-coming-soon {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.8;
}

.button-main-text {
  font-size: 1.125rem;
  font-weight: 600;
}

/* Launch Note */
.product-launch-note {
  text-align: center;
  font-size: 0.875rem;
  color: #999;
  margin-top: 1rem;
  line-height: 1.6;
}

/* Purchase Info */
.product-purchase-info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid #f0f0f0;
}

.product-purchase-info-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  text-align: center;
  font-size: 0.875rem;
  color: #666;
}

.product-info-icon {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

/* Bottom CTA */
.product-bottom-cta {
  max-width: 500px;
  margin: 4rem auto 0;
  text-align: center;
}

.product-bottom-cta .product-purchase-button {
  margin-bottom: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .product-purchase-box {
    padding: 1rem 1.5rem;
    margin: 3rem auto 0;
  }

  .product-price-amount {
    font-size: 2rem;
  }

  .product-purchase-info {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .product-purchase-info-item {
    flex-direction: row;
    justify-content: center;
    gap: 0.75rem;
  }

  .product-info-icon {
    font-size: 1.25rem;
    margin-bottom: 0;
  }
}

@media (max-width: 480px) {
  .product-purchase-box {
    padding: 1.5rem 1rem;
  }

  .product-price-amount {
    font-size: 1.75rem;
  }

  .product-purchase-button {
    padding: 1rem 1.5rem;
    font-size: 1rem;
  }

  .button-main-text {
    font-size: 1rem;
  }
}
/*
 * This is a manifest file that'll be compiled into application.css, which will include all the files
 * listed below.
 *
 * Any CSS (and SCSS, if configured) file within this directory, lib/assets/stylesheets, or any plugin's
 * vendor/assets/stylesheets directory can be referenced here using a relative path.
 *
 * You're free to add application-wide styles to this file and they'll appear at the bottom of the
 * compiled file so the styles you add here take precedence over styles defined in any other CSS
 * files in this directory. Styles in this file should be added after the last require_* statement.
 * It is generally better to create a new file per style scope.
 *


 */