:root {
    /* Colors */
    --color-bg: #ffffff;
    --color-bg-light: #f8f9fc;
    --color-text: #1a1a2e;
    --color-text-light: #64748b;
    --color-primary: #1e3a8a;
    --color-primary-hover: #172554;
    --color-secondary: #0f172a;
    --color-border: #e2e8f0;

    /* Typography */
    --font-heading: 'Noto Sans JP', sans-serif;
    --font-body: 'Noto Sans JP', sans-serif;
    --font-en: 'Inter', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Transition */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    
    /* Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

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

/* Utilities */
.section {
    padding: var(--spacing-xl) 0;
}

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

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

.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mt-2 { margin-top: 0.5rem; }
.text-gray { color: var(--color-text-light); }
.text-sm { font-size: 0.875rem; }

.section-badge {
    display: inline-block;
    font-family: var(--font-en);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.section-desc {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: white;
}

.btn-secondary:hover {
    background-color: #000;
    transform: translateY(-2px);
}

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

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

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1.125rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: transform var(--transition-fast);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-en);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

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

.nav-list {
    display: flex;
    gap: 2rem;
    font-family: var(--font-en);
    font-size: 0.9rem;
    font-weight: 500;
}

.nav-list a:hover {
    color: var(--color-primary);
}

.header-btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--color-secondary);
    color: white;
    border-radius: 50px;
    font-weight: 500;
    font-size: 0.875rem;
    transition: background-color var(--transition-fast);
}

.header-btn:hover {
    background-color: #000;
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 101;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-text);
    transition: all 0.3s ease;
}

.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: white;
    z-index: 99;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-nav.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-list {
    text-align: center;
}

.mobile-nav-list li {
    margin-bottom: 2rem;
}

.mobile-nav-list a {
    font-family: var(--font-en);
    font-size: 1.5rem;
    font-weight: 600;
}

.mobile-nav-cta {
    font-family: var(--font-body) !important;
    display: inline-block;
    padding: 1rem 2rem;
    background-color: var(--color-primary);
    color: white;
    border-radius: 50px;
    margin-top: 1rem;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

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

.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px; /* Offset for header */
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    opacity: 0.15; /* keeping it subtle for white-based look */
    filter: grayscale(100%) contrast(1.2);
    /* For a truly simple white look, we keep image opacity low */
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

.hero-acronym {
    margin-bottom: 2rem;
}

.acronym-text {
    font-family: var(--font-en);
    font-size: 1.125rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--color-text-light);
    text-transform: uppercase;
    display: inline-flex;
    align-items: baseline;
    gap: 0.3rem;
}

.acronym-text .initial {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-primary);
}

.acronym-gym {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-left: 0.3rem;
    text-transform: none;
}

@media (max-width: 768px) {
    .acronym-text {
        font-size: 0.8rem;
        flex-wrap: wrap;
        justify-content: center;
        line-height: 1.4;
    }
    .acronym-text .initial,
    .acronym-gym {
        font-size: 1.25rem;
    }
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    color: var(--color-text-light);
    max-width: 800px;
    margin: 0 auto var(--spacing-lg) auto;
    line-height: 1.8;
}

/* Intro */
.intro {
    text-align: center;
}

.intro-story {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.125rem;
    color: var(--color-text-light);
}

.intro-story .strong-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}

/* Program */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.feature-card {
    background-color: white;
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.feature-icon {
    font-family: var(--font-en);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    opacity: 0.2;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* Tools & Roadmap */
.two-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.tool-list {
    margin-top: 2rem;
}

.tool-list li {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
    font-weight: 500;
}

.tool-bullet {
    width: 12px;
    height: 12px;
    background-color: var(--color-primary);
    border-radius: 50%;
    margin-right: 1rem;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 7px;
    height: 100%;
    width: 2px;
    background-color: var(--color-border);
}

.timeline-item {
    position: relative;
    margin-bottom: 2.5rem;
}

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

.timeline-dot {
    position: absolute;
    left: -2rem;
    top: 5px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: white;
    border: 4px solid var(--color-primary);
}

.timeline-content h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: var(--color-text-light);
}

/* Pricing & Location */
.location-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.location-card {
    background-color: white;
    padding: 2rem;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--color-border);
}

.location-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.pricing-table-wrapper {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-md);
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background-color: white;
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    border: 1px solid var(--color-border);
    position: relative;
}

.pricing-card.focus {
    border: 2px solid var(--color-primary);
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
    z-index: 2;
    transform: scale(1.02);
}

.pricing-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--color-border);
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.price {
    font-size: 3rem;
    font-weight: 700;
    font-family: var(--font-en);
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
}

.price span {
    font-size: 1.5rem;
}

.price .tax {
    font-size: 0.875rem;
    font-family: var(--font-body);
    font-weight: normal;
    color: var(--color-text-light);
}

.pricing-desc {
    color: var(--color-text-light);
    margin-top: 1rem;
    font-weight: 500;
}

.pricing-features ul {
    list-style: none;
}

.pricing-features li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-text-light);
}

.pricing-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

.pricing-features strong {
    color: var(--color-text);
}

.pricing-action {
    margin-top: 2rem;
    text-align: center;
}

/* Profile */
.profile-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.profile-image img {
    border-radius: var(--radius-lg);
    width: 100%;
    aspect-ratio: 1/1;
    object-fit: cover;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.profile-name {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.profile-name span {
    font-size: 1.125rem;
    color: var(--color-text-light);
    font-weight: normal;
}

.profile-desc {
    color: var(--color-text-light);
    margin-bottom: 2rem;
    font-size: 1.125rem;
}

.profile-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.profile-links a {
    padding: 0.5rem 1.5rem;
    background-color: var(--color-bg-light);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
}

.profile-links a:hover {
    background-color: var(--color-border);
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #1e3a8a 0%, #0f172a 100%);
    color: white;
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.cta-title {
    font-size: clamp(2rem, 3vw, 2.5rem);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    font-family: var(--font-en);
    font-weight: 700;
    font-size: 1.25rem;
}

.footer-logo span {
    color: var(--color-primary);
}

.footer-copy {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* Animations */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 992px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .two-columns {
        grid-template-columns: 1fr;
    }
    
    .pricing-table-wrapper {
        grid-template-columns: 1fr;
        max-width: 500px;
    }
    
    .pricing-card.focus {
        transform: none;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .header-btn {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .profile-wrapper {
        grid-template-columns: 1fr;
    }
    
    .location-cards {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .sp-only {
        display: block;
    }
}

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