/* Tepica v7.0 - Luxury Hero + Professional Content */

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.7;
    color: #2C2C2C;
    background: #FFFFFF;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    font-feature-settings: "palt" 1;
    letter-spacing: 0.02em;
    font-size: 16px;
}

/* ===== Typography Enhancement ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: 0.01em;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

p {
    text-shadow: 0 1px 1px rgba(0, 0, 0, 0.02);
}

/* Improve readability for smaller text */
.section-description,
.feature-card p,
.industry-card p,
.pricing-features li,
.app-image-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    letter-spacing: 0.03em;
}

/* ===== Design System ===== */
:root {
    /* Tepica Brand Colors */
    --tepica-teal: #4ECDC4;
    --tepica-teal-text: #3DBDB5;
    --tepica-dark: #2C2C2C;
    --tepica-light: #F8F9FA;
    --tepica-white: #FFFFFF;
    
    /* Luxury Accents from Teaser */
    --luxury-gold: #D4AF37;
    --luxury-platinum: #E5E4E2;
    --luxury-accent: #FF6B9D;
    
    /* Typography */
    --font-display: 'Playfair Display', serif;
    --font-body: 'Noto Sans JP', sans-serif;
    --font-ui: 'Inter', sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 3rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-3xl: 8rem;
    
    /* Animations */
    --ease-luxury: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --ease-dramatic: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --shadow-soft: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-large: 0 8px 24px rgba(0, 0, 0, 0.12);
}

/* ===== Hero Section - Luxury Style ===== */
.hero-section {
    height: 100vh;
    width: 100vw;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: #000;
}

.background-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.bg-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    opacity: 0;
    transition: opacity 2s var(--ease-luxury);
    transform: scale(1.05);
    animation: kenBurns 20s infinite linear;
}

.bg-slide.active {
    opacity: 1;
}

@keyframes kenBurns {
    0%, 100% {
        transform: scale(1.05) rotate(0deg);
    }
    25% {
        transform: scale(1.1) rotate(0.2deg);
    }
    50% {
        transform: scale(1.08) rotate(-0.1deg);
    }
    75% {
        transform: scale(1.12) rotate(0.1deg);
    }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(0, 0, 0, 0.6) 0%,
        rgba(0, 0, 0, 0.3) 50%,
        rgba(0, 0, 0, 0.5) 100%
    );
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 0 var(--space-md);
}

.hero-logo-container {
    margin-bottom: var(--space-lg);
    opacity: 0;
    transform: translateY(50px);
    animation: fadeInUp 1.5s var(--ease-dramatic) 0.5s forwards;
}

.hero-logo {
    width: 120px;
    height: 120px;
    border-radius: 20px;
    box-shadow: var(--shadow-large);
    transition: all 0.3s var(--ease-smooth);
}

.hero-logo:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 32px rgba(78, 205, 196, 0.3);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(4rem, 10vw, 8rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 0.9;
    margin-bottom: var(--space-lg);
    color: #FFFFFF;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.8), 0 0 30px rgba(78, 205, 196, 0.4);
}

@keyframes shimmer {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.title-line {
    display: block;
    opacity: 0;
    transform: translateY(100px);
    animation: fadeInUp 1.5s var(--ease-dramatic) forwards;
}

.hero-subtitle {
    margin-bottom: var(--space-xl);
}

.subtitle-line {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 3rem);
    font-weight: 400;
    letter-spacing: 0.05em;
    color: var(--luxury-platinum);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    opacity: 0;
    transform: translateY(50px);
    animation: fadeInUp 1.2s var(--ease-luxury) forwards;
}

.subtitle-line:nth-child(2) {
    animation-delay: 0.3s;
}

.hero-description {
    font-family: var(--font-body);
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.8;
    color: var(--luxury-platinum);
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s var(--ease-luxury) 0.9s forwards;
    margin-bottom: var(--space-xl);
}

.hero-buttons {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s var(--ease-luxury) 1.2s forwards;
}

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

/* ===== Luxury Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-family: var(--font-ui);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s var(--ease-smooth);
    min-height: 48px;
    letter-spacing: 0.05em;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--tepica-teal) 0%, #3DBDB5 100%);
    color: white;
    box-shadow: var(--shadow-medium);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-large);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}


/* ===== CSS Animations for JavaScript ===== */
.fade-in-up {
    animation: fadeInUpCard 0.6s ease-out forwards;
}

.stagger-animate {
    animation: staggerFade 0.8s ease-out forwards;
}

@keyframes fadeInUpCard {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes staggerFade {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ===== Standard Sections ===== */
.section {
    padding: var(--space-3xl) 0;
    position: relative;
}

.section:nth-child(even) {
    background: var(--tepica-light);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 600;
    color: var(--tepica-dark);
    margin-bottom: var(--space-lg);
    letter-spacing: 0.02em;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.06);
}

.section-description {
    font-size: 1.25rem;
    color: var(--tepica-dark);
    opacity: 0.8;
    line-height: 1.8;
}

/* ===== Naming Section ===== */
.tepica-equation {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 3vw, 2rem);
    font-weight: 600;
    color: var(--tepica-teal-text);
    margin: var(--space-lg) 0;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.equation-symbol {
    color: var(--tepica-dark);
    opacity: 0.6;
}

.naming-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-2xl);
}

.naming-card {
    background: var(--tepica-white);
    border-radius: 20px;
    padding: var(--space-xl);
    text-align: center;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s var(--ease-smooth);
    border: 1px solid rgba(78, 205, 196, 0.1);
}

.naming-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-large);
    border-color: var(--tepica-teal);
}

.naming-icon {
    width: 80px;
    height: 80px;
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
    margin-right: auto;
}

.naming-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 16px;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s var(--ease-smooth);
}

.naming-card:hover .naming-icon img {
    transform: scale(1.05);
    box-shadow: var(--shadow-medium);
}

.naming-card h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--tepica-teal-text);
    margin-bottom: var(--space-sm);
}
 .highlight {
   color: #ff6600; /* ハイライト色コード変更！ */
   font-weight: bold;
}

/* ===== Features Section ===== */
.features-section {
    position: relative;
    overflow: hidden;
}

.features-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.features-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.1;
}

.features-section .container {
    position: relative;
    z-index: 1;
}

.features-section .section-header {
    background: rgba(255, 255, 255, 0.95);
    padding: var(--space-lg);
    border-radius: 16px;
    margin-bottom: var(--space-2xl);
    box-shadow: var(--shadow-soft);
}

/* ===== Features Grid ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.feature-card {
    background: var(--tepica-white);
    border-radius: 16px;
    padding: var(--space-lg);
    box-shadow: var(--shadow-soft);
    transition: all 0.3s var(--ease-smooth);
    border: 1px solid rgba(78, 205, 196, 0.1);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
    border-color: var(--tepica-teal);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--tepica-teal);
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
    font-size: 1.25rem;
    transition: all 0.3s var(--ease-smooth);
}

.feature-card:hover .feature-icon {
    background: #3DBDB5;
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--tepica-dark);
    margin-bottom: var(--space-sm);
}

.feature-card p {
    color: var(--tepica-dark);
    opacity: 0.8;
    line-height: 1.6;
}

/* ===== App Images Grid - Horizontal Layout ===== */
.app-images-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    margin-top: var(--space-2xl);
}

.app-image-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
    background: var(--tepica-white);
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    padding: var(--space-xl);
    margin-bottom: var(--space-lg);
}

.app-image-card:nth-child(even) {
    grid-template-columns: 1fr 1fr;
}

.app-image-card:nth-child(even) .app-image-container {
    order: 2;
}

.app-image-card:nth-child(even) .app-image-content {
    order: 1;
}


.app-image-container {
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-image-container img {
    max-width: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s ease;
}

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

.app-image-content {
}

.app-image-content h3 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--tepica-dark);
    margin-bottom: var(--space-lg);
    line-height: 1.3;
}

.app-image-content p {
    color: var(--tepica-dark);
    opacity: 0.8;
    line-height: 1.8;
    font-size: 1.1rem;
}

/* ===== Industries Section ===== */
.industries-section {
    position: relative;
    overflow: hidden;
}

.industries-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.industries-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.1;
}

.industries-section .container {
    position: relative;
    z-index: 1;
}

.industries-section .section-header {
    background: rgba(255, 255, 255, 0.95);
    padding: var(--space-lg);
    border-radius: 16px;
    margin-bottom: var(--space-2xl);
    box-shadow: var(--shadow-soft);
}

.section-subtitle {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--tepica-dark);
    margin-bottom: var(--space-sm);
}

.section-highlight {
    font-size: 1.125rem;
    color: var(--tepica-teal);
    font-weight: 600;
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.industry-card {
    background: var(--tepica-white);
    border-radius: 16px;
    padding: var(--space-lg);
    text-align: center;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s var(--ease-smooth);
    border: 1px solid rgba(78, 205, 196, 0.1);
}

.industry-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
    border-color: var(--tepica-teal);
}

.industry-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
    margin-right: auto;
    background: var(--tepica-teal);
    color: white;
    border-radius: 12px;
    font-size: 1.75rem;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s var(--ease-smooth);
}

.industry-card:hover .industry-icon {
    background: #3DBDB5;
    transform: scale(1.1);
    box-shadow: var(--shadow-medium);
}

.industry-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--tepica-dark);
    margin-bottom: var(--space-sm);
}

.industry-card p {
    color: var(--tepica-dark);
    opacity: 0.8;
    line-height: 1.6;
}

/* ===== Security Section ===== */
.security-section {
    position: relative;
    overflow: hidden;
}

.security-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.security-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.1;
}

.security-section .container {
    position: relative;
    z-index: 1;
}

.security-section .section-header {
    background: rgba(255, 255, 255, 0.95);
    padding: var(--space-lg);
    border-radius: 16px;
    margin-bottom: var(--space-2xl);
    box-shadow: var(--shadow-soft);
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.security-card {
    background: var(--tepica-white);
    border-radius: 16px;
    padding: var(--space-lg);
    text-align: center;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s var(--ease-smooth);
    border: 1px solid rgba(78, 205, 196, 0.1);
}

.security-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
    border-color: var(--tepica-teal);
}

.security-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
    margin-right: auto;
    background: var(--tepica-teal);
    color: white;
    border-radius: 12px;
    font-size: 1.75rem;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s var(--ease-smooth);
}

.security-card:hover .security-icon {
    background: #3DBDB5;
    transform: scale(1.1);
    box-shadow: var(--shadow-medium);
}

.security-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--tepica-dark);
    margin-bottom: var(--space-sm);
}

.security-card p {
    color: var(--tepica-dark);
    opacity: 0.8;
    line-height: 1.6;
}

/* ===== Support Section ===== */

.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.support-card {
    background: var(--tepica-white);
    border-radius: 16px;
    padding: var(--space-lg);
    text-align: center;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s var(--ease-smooth);
    border: 1px solid rgba(78, 205, 196, 0.1);
}

.support-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
    border-color: var(--tepica-teal);
}

.support-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
    margin-right: auto;
    background: var(--tepica-teal);
    color: white;
    border-radius: 12px;
    font-size: 1.75rem;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s var(--ease-smooth);
}

.support-card:hover .support-icon {
    background: #3DBDB5;
    transform: scale(1.1);
    box-shadow: var(--shadow-medium);
}

.support-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--tepica-dark);
    margin-bottom: var(--space-sm);
}

.support-card p {
    color: var(--tepica-dark);
    opacity: 0.8;
    line-height: 1.6;
}

/* ===== Case Studies Section ===== */
.case-studies-section {
    position: relative;
    overflow: hidden;
}

.case-studies-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.case-studies-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.08;
}

.case-studies-section .container {
    position: relative;
    z-index: 1;
}

.case-studies-section .section-header {
    background: rgba(255, 255, 255, 0.95);
    padding: var(--space-lg);
    border-radius: 16px;
    margin-bottom: var(--space-2xl);
    box-shadow: var(--shadow-soft);
}

.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-2xl);
}

.case-study-card {
    background: var(--tepica-white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s var(--ease-smooth);
    border: 1px solid rgba(78, 205, 196, 0.1);
}


.case-study-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-large);
    border-color: var(--tepica-teal);
}

.case-study-header {
    background: linear-gradient(135deg, var(--tepica-teal) 0%, #3DBDB5 100%);
    color: white;
    padding: var(--space-lg);
    text-align: center;
    box-sizing: border-box;
    max-width: 100%;
    overflow-x: auto;
    padding-right: 0;
    margin-right: 0;
}

.case-study-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
    margin-right: auto;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    font-size: 1.5rem;
}

.case-study-header h3 {
    font-size: 1.375rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.case-study-company {
    font-size: 0.875rem;
    opacity: 0.9;
}

.case-study-content {
    padding: var(--space-xl);
}

.case-study-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--tepica-teal);
    margin-bottom: var(--space-sm);
    margin-top: var(--space-lg);
}

.case-study-content h4:first-child {
    margin-top: 0;
}

.case-study-content p {
    color: var(--tepica-dark);
    opacity: 0.8;
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.case-study-effects {
    list-style: none;
    margin-bottom: var(--space-lg);
}

.case-study-effects li {
    padding: var(--space-xs) 0;
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    color: var(--tepica-dark);
    opacity: 0.8;
    line-height: 1.6;
}

.case-study-effects li::before {
    content: '✓';
    color: var(--tepica-teal);
    font-weight: 600;
    font-size: 1rem;
    margin-top: 2px;
    flex-shrink: 0;
}

.case-study-quote {
    background: var(--tepica-light);
    padding: var(--space-lg);
    border-radius: 12px;
    font-style: italic;
    color: var(--tepica-dark);
    margin: 0;
    border-left: 4px solid var(--tepica-teal);
    position: relative;
}

.case-study-quote::before {
    content: '"';
    font-size: 3rem;
    color: var(--tepica-teal);
    position: absolute;
    top: -10px;
    left: var(--space-lg);
    font-family: serif;
    line-height: 1;
}

/* ===== LINE Integration Section ===== */
.line-integration-content {
    margin-top: var(--space-2xl);
}

.line-integration-hero {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.line-hero-image {
    max-width: 500px;
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: var(--shadow-large);
    transition: all 0.3s var(--ease-smooth);
}

.line-hero-image:hover {
    transform: scale(1.02);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.line-integration-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-3xl);
    padding: var(--space-xl);
    background: var(--tepica-white);
    border-radius: 20px;
    box-shadow: var(--shadow-soft);
}


.line-icon-container {
    background: #00C300;
    color: white;
    font-size: 2.5rem;
}

.tepica-icon-container {
    background: var(--tepica-white);
    border: 2px solid var(--tepica-teal);
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.7;
    }
}

.line-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.line-feature-card {
    background: var(--tepica-white);
    border-radius: 16px;
    padding: var(--space-lg);
    text-align: center;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s var(--ease-smooth);
    border: 1px solid rgba(78, 205, 196, 0.1);
}

.line-feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
    border-color: var(--tepica-teal);
}

.line-feature-icon {
    width: 56px;
    height: 56px;
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
    margin-right: auto;
    background: #00C300;
    color: white;
    border-radius: 12px;
    font-size: 1.5rem;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s var(--ease-smooth);
}

.line-feature-card:hover .line-feature-icon {
    background: #00A300;
    transform: scale(1.1);
    box-shadow: var(--shadow-medium);
}

.line-feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--tepica-dark);
    margin-bottom: var(--space-sm);
}

.line-feature-card p {
    color: var(--tepica-dark);
    opacity: 0.8;
    line-height: 1.6;
}

/* ===== Tech Stack Section ===== */
.tech-stack-section {
    position: relative;
    overflow: hidden;
}

.tech-stack-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.tech-stack-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.1;
}

.tech-stack-section .container {
    position: relative;
    z-index: 1;
}

.tech-stack-section .section-header {
    background: rgba(255, 255, 255, 0.95);
    padding: var(--space-lg);
    border-radius: 16px;
    margin-bottom: var(--space-2xl);
    box-shadow: var(--shadow-soft);
}

.tech-stack-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-3xl);
}

.tech-category-card {
    background: var(--tepica-white);
    border-radius: 16px;
    padding: var(--space-lg);
    box-shadow: var(--shadow-soft);
    transition: all 0.3s var(--ease-smooth);
    border: 1px solid rgba(78, 205, 196, 0.1);
}

.tech-category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
    border-color: var(--tepica-teal);
}

.tech-category-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: 0 !important;
}

.tech-category-icon {
    width: 48px;
    height: 48px;
    background: var(--tepica-teal);
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.5rem !important; /* アイコンと見出しの距離を統一 */
    margin-top: 0 !important;         /* 上の余白も不要なら0に */
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s var(--ease-smooth);
    flex-shrink: 0;
}

.tech-category-card:hover .tech-category-icon {
    background: #3DBDB5;
    transform: scale(1.1);
    box-shadow: var(--shadow-medium);
}

.tech-category-header h3 {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--tepica-dark);
    margin: 0;
}

.tech-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.tech-list li {
    padding: var(--space-xs) 0;
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    color: var(--tepica-dark);
    opacity: 0.8;
    line-height: 1.6;
}

.tech-list li::before {
    content: '▸';
    color: var(--tepica-teal);
    font-weight: 600;
    font-size: 1rem;
    margin-top: 2px;
    flex-shrink: 0;
}

.tech-extension-section {
    background: var(--tepica-light);
    border-radius: 20px;
    padding: var(--space-xl);
    text-align: center;
}

.tech-extension-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--tepica-dark);
    margin-bottom: var(--space-lg);
}

.tech-extension-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
}

.tech-extension-item {
    background: var(--tepica-white);
    border-radius: 12px;
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    box-shadow: var(--shadow-soft);
    transition: all 0.3s var(--ease-smooth);
    border: 1px solid rgba(78, 205, 196, 0.1);
}

.tech-extension-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
    border-color: var(--tepica-teal);
}

.tech-extension-item i {
    font-size: 1.5rem;
    color: var(--tepica-teal);
    transition: all 0.3s var(--ease-smooth);
}

.tech-extension-item:hover i {
    transform: scale(1.1);
    color: #3DBDB5;
}

.tech-extension-item span {
    font-weight: 500;
    color: var(--tepica-dark);
    text-align: center;
}

/* ===== Pricing Section ===== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-2xl);
}

.pricing-card {
    background: var(--tepica-white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s var(--ease-smooth);
    border: 1px solid rgba(78, 205, 196, 0.1);
}

.pricing-card.featured {
    border: 2px solid var(--tepica-teal);
    transform: scale(1.02);
}

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

.pricing-header {
    background: linear-gradient(135deg, var(--tepica-teal) 0%, #3DBDB5 100%);
    color: white;
    padding: var(--space-xl);
    text-align: center;
}

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.pricing-header p {
    opacity: 0.9;
    line-height: 1.6;
}

.pricing-body {
    padding: var(--space-xl);
}

.pricing-price {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--tepica-teal);
    text-align: center;
    margin-bottom: var(--space-sm);
}

.pricing-period {
    text-align: center;
    color: var(--tepica-dark);
    opacity: 0.7;
    margin-bottom: var(--space-lg);
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--space-lg);
}

.pricing-features li {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--tepica-light);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.pricing-features li::before {
    content: '✓';
    color: var(--tepica-teal);
    font-weight: 600;
    font-size: 1.125rem;
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-btn {
    display: block;
    width: 100%;
    text-align: center;
    padding: 1rem;
    background: var(--tepica-teal);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s var(--ease-smooth);
}

.pricing-btn:hover {
    background: #3DBDB5;
    transform: translateY(-2px);
}

/* ===== Contact Section ===== */
.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-form-container {
    margin-top: var(--space-xl);
    padding: 0;
    background: var(--tepica-white);
    border-radius: 20px;
    box-shadow: var(--shadow-soft);
    overflow: hidden;
}

.contact-form-container iframe {
    border-radius: 20px;
}

.contact-form-note {
    margin-bottom: var(--space-lg);
}

.contact-form-note p {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--tepica-dark);
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 1rem 2rem;
    background: var(--tepica-teal);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.125rem;
    transition: all 0.3s var(--ease-smooth);
    margin-bottom: var(--space-lg);
}

.contact-btn:hover {
    background: #3DBDB5;
    transform: translateY(-2px);
}

.btn-icon {
    transition: transform 0.3s var(--ease-smooth);
}

.contact-btn:hover .btn-icon {
    transform: translateX(5px);
}

.contact-email {
    color: var(--tepica-dark);
    opacity: 0.7;
    font-size: 0.875rem;
}

/* ===== Footer ===== */
.footer {
    background: var(--tepica-dark);
    color: var(--tepica-white);
    padding: var(--space-3xl) 0 var(--space-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-section {
    display: flex;
    flex-direction: column;
}

.footer-company {
    grid-column: span 1;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.footer-logo-img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.footer-logo h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
    color: var(--tepica-white);
}

.footer-description {
    font-size: 0.875rem;
    line-height: 1.6;
    opacity: 0.8;
    margin-bottom: var(--space-lg);
}

.footer-parent-company {
    margin-top: auto;
}

.parent-company-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--tepica-teal);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.3s var(--ease-smooth);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 6px;
    border: 1px solid rgba(78, 205, 196, 0.3);
}

.parent-company-link:hover {
    color: var(--tepica-white);
    background: var(--tepica-teal);
    border-color: var(--tepica-teal);
    transform: translateY(-1px);
}

.footer-nav h4,
.footer-contact h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--tepica-white);
    border-bottom: 2px solid var(--tepica-teal);
    padding-bottom: var(--space-xs);
}

.footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    color: var(--tepica-white);
    text-decoration: none;
    font-size: 0.875rem;
    opacity: 0.8;
    transition: all 0.3s var(--ease-smooth);
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--tepica-teal);
    transform: translateX(4px);
}

.footer-links a i {
    font-size: 0.75rem;
    opacity: 0.6;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-lg);
    text-align: center;
}

.footer-bottom p {
    opacity: 0.6;
    font-size: 0.75rem;
    margin: 0;
}

/* ===== Image Popup Modal ===== */
.image-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.image-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    position: relative;
    max-width: 80%;
    max-height: 80%;
    margin: auto;
}

.modal-image {
    max-width: 100%;
    max-height: 80vh;
    width: auto;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    object-fit: contain;
}

.modal-close {
    position: absolute;
    top: -40px;
    right: -40px;
    color: white;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s ease;
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.8);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@media (max-width: 768px) {
  /* 基本設定 */
  html, body {
    width: 100% !important;
    max-width: 100% !important;
    overflow-x: hidden !important;
    margin: 0 !important;
    padding: 0 !important;
    box-sizing: border-box !important;
  }

  *, *::before, *::after {
    box-sizing: border-box !important;
  }

  /* コンテナ幅の最適化 */
  .container {
    width: calc(100% - 8px) !important;
    max-width: calc(100% - 8px) !important;
    margin: 0 auto !important;
    padding-left: 4px !important;
    padding-right: 4px !important;
    box-sizing: border-box !important;
  }

  /* セクション全体設定 */
  .section, .section-header {
    width: 100% !important;
    max-width: 100% !important;
    padding: 0 !important;
    margin: 0 auto !important;
    box-sizing: border-box !important;
    box-shadow: none !important;
  }

  /* セクションヘッダーのマージン追加 */
  .section-header {
    margin-bottom: 1.5rem !important;
  }

  /* 全カード類のパディング統一 */
  .feature-card,
  .naming-card,
  .industry-card,
  .security-card,
  .support-card,
  .pricing-card,
  .case-study-card,
  .line-feature-card,
  .tech-category-card {
    padding: 1rem !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 auto 1rem !important;
    box-sizing: border-box !important;
  }
  /* .feature-card 内のpの中央揃え */
  .feature-card p {
    text-align: center !important;
  }

  /* 技術基盤（Tech Stack）の中央揃え */
  .tech-category-card {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: flex-start !important;
    text-align: center !important;
  }

  .tech-category-icon {
    margin: 0 auto 0.5rem !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
  }

  .tech-category-header {
    margin-bottom: 0 !important;
    text-align: center !important;
  }

  /* テック拡張セクションの内部余白調整 */
  .tech-extension-section {
    padding: 1rem !important;
  }

  .tech-extension-grid {
    gap: 0.8rem !important;
  }

  .tech-extension-item {
    padding: 1rem !important;
  }

  /* グリッドレイアウトの1カラム化 */
  .features-grid,
  .naming-grid,
  .industries-grid,
  .pricing-grid,
  .security-grid,
  .support-grid,
  .case-studies-grid,
  .line-features-grid,
  .tech-stack-grid {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 1rem !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 auto !important;
    padding: 0 !important;
    box-sizing: border-box !important;
  }

  /* アプリ画像カードの1カラム化 */
  .app-images-grid {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 1.5rem !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 auto !important;
    padding: 0 !important;
  }

  .app-image-card {
    display: flex !important;
    flex-direction: column !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 auto 0 !important;
    padding: 1rem !important;
    gap:0 !important;
    box-sizing: border-box !important;
    text-align: center !important;
  }

  .app-image-container,
  .app-image-content {
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 auto !important;
    padding: 0.5rem 0 !important;
    text-align: center !important;
    box-sizing: border-box !important;
  }

  /* ケーススタディ調整 */
  .case-study-header,
  .case-study-content {
    width: 100% !important;
    max-width: 100% !important;
    padding: 1rem !important;
    box-sizing: border-box !important;
    text-align: center !important;
    overflow: hidden !important;
    word-wrap: break-word !important;
    hyphens: auto !important;
  }

  /* プライシングセクション調整 */
  .pricing-header,
  .pricing-body {
    width: 100% !important;
    max-width: 100% !important;
    padding: 1rem !important;
    box-sizing: border-box !important;
    text-align: center !important;
    overflow: hidden !important;
    word-wrap: break-word !important;
    hyphens: auto !important;
  }

  /* ボタン調整 */
  .btn {
    width: auto !important;
    max-width: 280px !important;
    margin: 0 auto !important;
    padding: 0.8rem 1.5rem !important;
    text-align: center !important;
    box-sizing: border-box !important;
    display: block !important;
  }

  /* タイポグラフィ調整 */
  .hero-title,
  .title-line {
    font-size: clamp(3.5rem, 8vw, 3rem) !important;
    line-height: 1.1 !important;
    text-align: center !important;
    margin-bottom: 1rem !important;
  }

  .section-title {
    font-size: clamp(1.6rem, 6vw, 2rem) !important;
    line-height: 1.2 !important;
    text-align: center !important;
    margin-bottom: 1rem !important;
  }

  h2, h3 {
    font-size: clamp(1.2rem, 4vw, 1.5rem) !important;
    line-height: 1.3 !important;
    text-align: center !important;
    margin-bottom: 0.8rem !important;
  }

  /* 価格表示調整 */
  .pricing-price {
    font-size: 1.8rem !important;
    text-align: center !important;
    margin-bottom: 0.5rem !important;
  }

  /* アイコン調整 */
  .feature-icon,
  .security-icon,
  .support-icon,
  .industry-icon,
  .case-study-icon,
  .line-feature-icon,
  .naming-icon,
  .tech-category-icon {
    width: 48px !important;
    height: 48px !important;
    margin: 0 auto 1rem !important;
  }

  /* 画像制御 */
  img, svg {
    max-width: 100% !important;
    height: auto !important;
    margin-bottom: 1rem !important;
    box-sizing: border-box !important;
  }

  /* LINEインテグレーション */
  .line-integration-content {
     margin-top: 1rem;
  }

  .line-integration-hero {
     margin-bottom: 1rem;
  }

  .line-integration-visual {
    width: 100% !important;
    max-width: 100% !important;
    flex-direction: column !important;
    gap: 1rem !important;
    padding: 1rem !important;
    box-sizing: border-box !important;
    margin: 0 auto !important;
  }

  /* コンタクトセクション */
  .contact-content {
    width: 100% !important;
    max-width: 100% !important;
    padding: 0 1rem !important;
    text-align: center !important;
    box-sizing: border-box !important;
    margin: 0 auto !important;
  }

  /* セクション間余白 */
  .section {
    padding-top: 2rem !important;
    padding-bottom: 2rem !important;
  }

  /* モーダル調整 */
  .modal-content {
    max-width: 90vw !important;
    max-height: 80vh !important;
    margin: 0 auto !important;
  }

  /* フッター調整 */
  .footer {
    padding: 2rem 0 1rem !important;
  }

  .footer-content {
    grid-template-columns: 1fr !important;
    gap: 1.5rem !important;
    text-align: center !important;
  }

  .footer-section {
    margin-bottom: 1.5rem !important;
  }

  .footer-section:last-child {
    margin-bottom: 0 !important;
  }

  .footer-company {
    grid-column: span 1 !important;
    order: 1;
  }

  .footer-logo {
    justify-content: center !important;
    margin-bottom: 1rem !important;
  }

  .footer-description {
    margin-bottom: 1rem !important;
  }

  .footer-parent-company {
    margin-top: 1rem !important;
    text-align: center !important;
  }

  .footer-nav,
  .footer-contact {
    order: 2;
  }

  .footer-nav,
  .footer-contact {
    text-align: center !important;
  }

  .footer-nav h4,
  .footer-contact h4 {
    text-align: center !important;
    border-bottom: 2px solid var(--tepica-teal) !important;
    padding-bottom: 0.25rem !important;
    margin-bottom: 0.75rem !important;
    display: inline-block !important;
    margin-left: auto !important;
    margin-right: auto !important;
    font-size: 0.95rem !important;
  }

  .footer-links {
    text-align: center !important;
  }

  .footer-links li {
    margin-bottom: 0.5rem !important;
  }

  .footer-links a {
    justify-content: center !important;
    font-size: 0.85rem !important;
  }

  .footer-bottom {
    padding-top: 1rem !important;
  }

  /* 背景画像非表示 */
  .features-bg-image {
  opacity: 0;
  }
  .tech-stack-bg-image {
  opacity: 0;
  }
  .industries-bg-image {
  opacity: 0;
  }
  .security-bg-image {
  opacity: 0;
  }
  .case-studies-bg-image {
  opacity: 0;
  }
}

/* ===== Back to Top Button ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--tepica-teal);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-medium);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s var(--ease-smooth);
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: #3DBDB5;
    transform: translateY(-3px);
    box-shadow: var(--shadow-large);
}

.back-to-top:active {
    transform: translateY(-1px);
}

/* Mobile Adjustments */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
}