/* ========================================
   CSS Variables and Design System
   ======================================== */
:root {
    /* Colors */
    --color-white: #FFFFFF;
    --color-black: #000000;
    
    /* Gray Scale */
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    
    /* Brand Colors */
    --color-primary: #020617;
    --color-secondary: #172554;
    --color-accent: #4B3C7A;
    
    /* Semantic Colors */
    --color-red-500: #B22234;
    --color-green-500: #14532D;
    --color-yellow-400: #B38600;
    --color-blue-400: #1E3A5C;
    --color-pink-400: #7A294F;
    --color-purple-200: #2D254D;
    --color-purple-600: #4B3C7A;
    
    /* Typography */
    --font-primary: 'Zen Kaku Gothic New', sans-serif;
    --font-secondary: 'Noto Sans JP', 'Zen Kaku Gothic New', sans-serif;
    
    /* Font Sizes */
    --text-xs: 0.75rem;    /* 12px */
    --text-sm: 0.875rem;   /* 14px */
    --text-base: 1rem;     /* 16px */
    --text-lg: 1.125rem;   /* 18px */
    --text-xl: 1.25rem;    /* 20px */
    --text-2xl: 1.5rem;    /* 24px */
    --text-3xl: 1.875rem;  /* 30px */
    --text-4xl: 2.25rem;   /* 36px */
    --text-5xl: 3rem;      /* 48px */
    --text-6xl: 3.75rem;   /* 60px */
    --text-7xl: 4.5rem;    /* 72px */
    
    /* Spacing */
    --space-0: 0;
    --space-1: 0.25rem;    /* 4px */
    --space-2: 0.5rem;     /* 8px */
    --space-3: 0.75rem;    /* 12px */
    --space-4: 1rem;       /* 16px */
    --space-5: 1.25rem;    /* 20px */
    --space-6: 1.5rem;     /* 24px */
    --space-8: 2rem;       /* 32px */
    --space-10: 2.5rem;    /* 40px */
    --space-12: 3rem;      /* 48px */
    --space-16: 4rem;      /* 64px */
    --space-20: 5rem;      /* 80px */
    --space-24: 6rem;      /* 96px */
    
    /* Border Radius */
    --radius-sm: 0.125rem;  /* 2px */
    --radius-md: 0.375rem;  /* 6px */
    --radius-lg: 0.5rem;    /* 8px */
    --radius-xl: 0.75rem;   /* 12px */
    --radius-2xl: 1rem;     /* 16px */
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Gradients */
    --gradient-dark: linear-gradient(180deg, #020617 0%, #172554 100%);
    --gradient-tech: linear-gradient(90deg, #020617 0%, #172554 100%);
    
    /* Layout */
    --max-width: 1280px;
    --header-height: 64px;
    
    /* Breakpoints */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

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

body {
    font-family: var(--font-secondary);
    font-size: var(--text-base);
    line-height: 1.5;
    color: var(--color-gray-800);
    background: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography Base */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-4);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
    margin-bottom: var(--space-4);
}

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

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

/* Default Element Margins */
h1, h2, h3, h4, h5, h6 {
    margin-top: 0;
    margin-bottom: var(--space-6);
    line-height: 1.2;
}

p {
    margin-top: 0;
    margin-bottom: var(--space-4);
    line-height: 1.6;
}

p:last-child {
    margin-bottom: 0;
}

ul, ol {
    margin-top: 0;
    margin-bottom: var(--space-4);
    padding-left: var(--space-8);
}

ul ul, ol ol, ul ol, ol ul {
    margin-bottom: 0;
}

li {
    margin-bottom: var(--space-2);
}

li:last-child {
    margin-bottom: 0;
}

/* ========================================
   Utility Classes
   ======================================== */

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-16);
}

/* Flex Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }
.gap-12 { gap: var(--space-12); }
.gap-16 { gap: var(--space-16); }

/* Grid Utilities */
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* Text Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.font-bold { font-weight: 700; }
.font-medium { font-weight: 500; }
.font-normal { font-weight: 400; }

/* Spacing Utilities */
.mt-0 { margin-top: var(--space-0); }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mt-16 { margin-top: var(--space-16); }
.mt-20 { margin-top: var(--space-20); }
.mt-24 { margin-top: var(--space-24); }
.mb-0 { margin-bottom: var(--space-0); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }
.mb-16 { margin-bottom: var(--space-16); }
.mb-20 { margin-bottom: var(--space-20); }
.mb-24 { margin-bottom: var(--space-24); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.py-8 { padding-top: var(--space-8); padding-bottom: var(--space-8); }
.py-12 { padding-top: var(--space-12); padding-bottom: var(--space-12); }
.py-16 { padding-top: var(--space-16); padding-bottom: var(--space-16); }
.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.px-8 { padding-left: var(--space-8); padding-right: var(--space-8); }

/* Background Utilities */
.bg-white { background-color: var(--color-white); }
.bg-gray-50 { background-color: var(--color-gray-50); }
.bg-gray-100 { background-color: var(--color-gray-100); }
.bg-primary { background-color: var(--color-primary); }
.bg-gradient-dark { background: var(--gradient-dark); }

/* Text Color Utilities */
.text-white { color: var(--color-white); }
.text-gray-600 { color: var(--color-gray-600); }
.text-gray-700 { color: var(--color-gray-700); }
.text-gray-800 { color: var(--color-gray-800); }
.text-gray-900 { color: var(--color-gray-900); }

/* ========================================
   Component Classes
   ======================================== */

/* Header Component */
.header {
    width: 100%;
    background: var(--color-white);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    height: var(--header-height);
}

.header-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-16);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-8);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-image {
    height: auto;
    width: auto;
    max-width: 200px;
    max-height: 50px;
    display: block;
    object-fit: contain;
}

/* Navigation */
.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-link {
    font-family: var(--font-secondary);
    font-size: var(--text-base);
    color: var(--color-gray-600);
    text-decoration: none;
    padding: 0 var(--space-2);
    transition: color var(--transition-fast);
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--color-gray-900);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-gray-900);
    margin: 5px 0;
    transition: all var(--transition-fast);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    inset: var(--header-height) 0 0 0;
    background: var(--color-white);
    box-shadow: var(--shadow-lg);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: var(--space-4) 0 env(safe-area-inset-bottom);
    z-index: 40;
}

.mobile-menu.active {
    display: block;
}

.mobile-menu .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0;
}

.mobile-menu .nav-link {
    padding: var(--space-3) var(--space-16);
    border-bottom: 1px solid var(--color-gray-100);
}

/* Main Content with Header Offset */
.main {
    padding-top: var(--header-height);
    min-height: 100vh;
}

/* Section Component */
.section {
    padding: var(--space-16) var(--space-16);
    margin-bottom: var(--space-16);
}

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

.section-title {
    font-size: var(--text-5xl);
    font-weight: 500;
    text-align: center;
    margin-bottom: var(--space-12);
    letter-spacing: 0.05em;
}

.section-subtitle {
    font-size: var(--text-xl);
    color: var(--color-gray-600);
    text-align: center;
    margin-bottom: var(--space-8);
}

/* Card Component - Unified Design */
.card {
    background: var(--color-white);
    border: 1.5px solid #E5E7EB;
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    margin-bottom: var(--space-6);
    box-shadow: 0 4px 16px rgba(23, 37, 84, 0.08);
    transition: all var(--transition-normal);
}

.card:hover {
    box-shadow: 0 8px 24px rgba(23, 37, 84, 0.12);
    transform: translateY(-2px);
}

/* Common card style for all card-like elements */
.card-style {
    background: var(--color-white);
    border: 1.5px solid #E5E7EB;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(23, 37, 84, 0.08);
}

.card-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-4);
}

.card-description {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* Button Component */
.button {
    display: inline-block;
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-base);
    font-weight: 500;
    text-align: center;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    outline: none;
}

.button-primary {
    background: var(--color-primary);
    color: var(--color-white);
}

.button-primary:hover {
    background: var(--color-secondary);
}

.button-secondary {
    background: var(--color-white);
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.button-secondary:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

/* Feature Box Component */
.feature-box {
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    text-align: center;
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-4);
}

.feature-title {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-3);
}

.feature-description {
    font-size: var(--text-base);
    color: var(--color-gray-600);
}

/* Tech Bar Component */
.tech-bar {
    width: 2px;
    height: 48px;
    background: var(--color-gray-400);
    border-radius: var(--radius-sm);
    margin: 0;
    flex-shrink: 0;
}

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

/* Index Page */
.hero {
    display: flex;
    align-items: center;
    gap: var(--space-16);
    padding: var(--space-16) var(--space-16);
    margin-bottom: var(--space-20);
}

.hero-content {
    flex: 1 1 400px;
}

.hero-title {
    font-size: var(--text-6xl);
    font-weight: 700;
    margin-bottom: var(--space-6);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: var(--text-xl);
    color: var(--color-gray-600);
    margin-bottom: var(--space-8);
    line-height: 1.6;
}

.hero-image,
.animation-container {
    flex: 1 1 400px;
    text-align: center;
}

/* Content Grid for Index Page */
.content-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-8);
    padding: var(--space-16) 0;
    margin-bottom: var(--space-12);
}

.content-grid .card {
    padding: var(--space-10);
    text-align: center;
    border: 1px solid var(--color-gray-200);
    background: var(--color-white);
}

.content-grid .card:hover {
    border-color: var(--color-primary);
}

.card-link {
    display: inline-block;
    margin-top: var(--space-4);
    color: var(--color-primary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.card-link:hover {
    transform: translateX(4px);
}

/* Philosophy Page */
.philosophy-detail-card {
    background: var(--color-white);
    border: 1.5px solid #E5E7EB;
    border-radius: 16px;
    padding: var(--space-6) var(--space-4);
    box-shadow: 0 4px 16px rgba(23, 37, 84, 0.08);
    margin: var(--space-12) 0;
}

.philosophy-detail-row {
    display: flex;
    gap: var(--space-12);
    align-items: flex-start;
}

.philosophy-detail-left {
    flex: 0 0 300px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.philosophy-detail-right {
    flex: 1;
}

.philosophy-detail-illust {
    width: 100%;
    max-width: 300px;
    height: auto;
    margin-bottom: var(--space-4);
}

.philosophy-detail-illust-caption {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    text-align: center;
}

.philosophy-detail-title {
    font-family: var(--font-primary);
    font-size: var(--text-3xl);
    font-weight: 500;
    color: var(--color-gray-900);
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.philosophy-detail-lead {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    margin-bottom: var(--space-8);
    line-height: 1.8;
}

.philosophy-detail-features-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

.philosophy-detail-features-box {
    background: var(--color-gray-50);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
}

.philosophy-detail-features-title {
    font-family: var(--font-primary);
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--color-gray-900);
    margin-bottom: var(--space-3);
}

.philosophy-detail-features-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.philosophy-detail-features-list li {
    font-size: var(--text-base);
    color: var(--color-gray-700);
    line-height: 1.6;
    position: relative;
    padding-left: var(--space-6);
}

.philosophy-detail-features-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
    font-size: var(--text-xl);
}

/* Fix for current HTML structure */
.philosophy-card {
    background: var(--color-white);
    border: 1.5px solid #E5E7EB;
    border-radius: 16px;
    padding: var(--space-6) var(--space-4);
    margin: var(--space-12) 0;
    box-shadow: 0 4px 16px rgba(23, 37, 84, 0.08);
}

.philosophy-title {
    font-family: var(--font-primary);
    font-size: var(--text-3xl);
    font-weight: 500;
    color: var(--color-gray-900);
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.philosophy-description {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    line-height: 1.8;
}

/* Approach Page */
.approach-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-8);
}

/* Approach Page Specific Styles */
.approach-boxes-row {
    display: flex;
    gap: var(--space-8);
    justify-content: center;
    align-items: center;
    margin: var(--space-16) 0;
    flex-wrap: wrap;
}


.approach-box:nth-of-type(1) {
    transform: rotate(-2deg);
}

.approach-box:nth-of-type(3) {
    transform: rotate(2deg);
}

.approach-box:nth-of-type(5) {
    transform: rotate(-1.5deg);
}

.approach-box-h3 {
    font-family: var(--font-primary);
    font-size: var(--text-2xl);
    font-weight: 500;
    color: var(--color-gray-900);
    text-align: left;
    margin-bottom: var(--space-5);
    width: 100%;
}

.approach-box-list {
    list-style: none;
    padding-left: var(--space-4);
    margin-bottom: var(--space-5);
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.approach-box-list-item {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    line-height: 1.5;
}

.approach-box-divider {
    width: 100%;
    height: 2px;
    background: var(--color-gray-200);
    margin: var(--space-5) 0;
    border-radius: 1px;
}

.approach-box-desc {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    text-align: center;
    line-height: 1.5;
}

.approach-box-accent {
    font-size: var(--text-4xl);
    color: var(--color-gray-400);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Approach Impact/Domain Cards */
.approach-impact-card,
.approach-domain-card {
    background: var(--color-white);
    border: 1.5px solid #E5E7EB;
    border-radius: 16px;
    padding: var(--space-12);
    box-shadow: 0 4px 16px rgba(23, 37, 84, 0.08);
    margin: var(--space-16) auto;
    max-width: 1200px;
}

.approach-impact-row {
    display: flex;
    gap: var(--space-12);
    align-items: flex-start;
}

.approach-impact-left {
    flex: 0 1 300px;
    text-align: center;
    min-width: 200px;
}

.approach-impact-right {
    flex: 1;
}

.approach-impact-illust {
    width: 100%;
    max-width: 300px;
    height: auto;
    margin-bottom: var(--space-4);
}

.approach-impact-illust-caption {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    text-align: center;
}

.approach-impact-title {
    font-family: var(--font-primary);
    font-size: var(--text-3xl);
    font-weight: 500;
    color: var(--color-gray-900);
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.approach-impact-lead {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    margin-bottom: var(--space-8);
    line-height: 1.7;
}

.approach-impact-features-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

.approach-impact-feature-box {
    background: var(--color-white);
    border: 1.5px solid #E5E7EB;
    border-radius: 16px;
    padding: var(--space-4);
    box-shadow: 0 2px 8px rgba(23, 37, 84, 0.04);
}

.approach-impact-feature-title {
    font-family: var(--font-primary);
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--color-gray-900);
    margin-bottom: var(--space-3);
}

.approach-impact-feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.approach-impact-feature-list li {
    font-size: var(--text-base);
    color: var(--color-gray-700);
    line-height: 1.7;
}

.approach-impact-feature-list li b {
    font-family: var(--font-primary);
    font-weight: 500;
    color: var(--color-gray-900);
}

/* Approach Bottom Boxes */
.approach-bottom-row {
    display: flex;
    gap: var(--space-8);
    justify-content: center;
    margin: var(--space-16) 0;
}

.approach-bottom-box {
    background: var(--color-white);
    border: 1.5px solid #E5E7EB;
    border-radius: 16px;
    padding: var(--space-8) var(--space-4);
    min-width: 260px;
    max-width: 370px;
    flex: 1;
    text-align: center;
    box-shadow: 0 4px 16px rgba(23, 37, 84, 0.08);
}

.approach-bottom-title {
    font-family: var(--font-primary);
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--color-gray-900);
    margin-bottom: var(--space-2);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
}

.approach-bottom-icon {
    color: var(--color-primary);
}

.approach-bottom-desc {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    line-height: 1.5;
}

.approach-box {
    background: var(--color-white);
    border: 1.5px solid #E5E7EB;
    border-radius: 16px;
    padding: var(--space-10);
    box-shadow: 0 4px 16px rgba(23, 37, 84, 0.08);
    transition: all var(--transition-normal);
    flex: 0 1 320px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: left;
    margin: 0;
}

.approach-box:hover {
    box-shadow: 0 8px 24px rgba(23, 37, 84, 0.12);
    transform: translateY(-2px);
}

.approach-number {
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

.approach-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-4);
}

.approach-list {
    list-style: none;
}

.approach-list li {
    position: relative;
    padding-left: var(--space-6);
    margin-bottom: var(--space-3);
    color: var(--color-gray-700);
}

.approach-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

/* Technologies Page */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
}

.tech-card {
    background: var(--color-white);
    border: 1.5px solid #E5E7EB;
    border-radius: 16px;
    padding: var(--space-6);
    text-align: center;
    box-shadow: 0 4px 16px rgba(23, 37, 84, 0.08);
    transition: all var(--transition-normal);
}

.tech-card:hover {
    box-shadow: 0 8px 24px rgba(23, 37, 84, 0.12);
    transform: translateY(-4px);
}

.tech-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-4);
    object-fit: contain;
}

.tech-name {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-2);
}

.tech-category {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}

/* Technology Page */
.technology-main {
    padding-top: var(--header-height);
    padding-left: var(--space-16);
    padding-right: var(--space-16);
}

.technology-h2 {
    font-family: var(--font-primary);
    font-size: var(--text-5xl);
    font-weight: 500;
    color: var(--color-gray-900);
    text-align: center;
    margin-bottom: var(--space-6);
    letter-spacing: 0.05em;
}

.technology-h3 {
    font-family: var(--font-primary);
    font-size: var(--text-3xl);
    font-weight: 500;
    color: var(--color-gray-900);
    margin-bottom: var(--space-8);
    letter-spacing: 0.05em;
}

.technology-lead {
    font-family: var(--font-secondary);
    font-size: var(--text-xl);
    color: var(--color-gray-600);
    text-align: center;
    line-height: 1.8;
    max-width: 768px;
    margin: 0 auto var(--space-12);
}

.technology-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-24);
}

.technology-block {
    width: 100%;
}

.technology-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

/* Tech category labels */
.tech-category-label {
    font-family: var(--font-primary);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: var(--space-4);
    grid-column: 1 / -1;
}

.tech-card {
    background: var(--color-white);
    border: 1.5px solid #E5E7EB;
    border-radius: 16px;
    padding: var(--space-6) var(--space-8);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    box-shadow: 0 4px 16px rgba(23, 37, 84, 0.08);
    transition: all var(--transition-normal);
    position: relative;
}

.tech-card:hover {
    box-shadow: 0 8px 24px rgba(23, 37, 84, 0.12);
    transform: translateY(-2px);
}

.tech-card--wide {
    grid-column: span 3;
}

/* Tech cards: inline vertical tech-bar matching partner-icon-row */
.accent-bar > .tech-bar {
    width: 2px;
    height: 48px;
    background: var(--color-gray-400);
    border-radius: var(--radius-sm);
    margin: 0;
    flex-shrink: 0;
}

.tech-card-icon {
    width: 100px;
    height: 100px;
    flex-shrink: 0;
}

.tech-card-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.tech-card-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.tech-card-title {
    font-family: var(--font-primary);
    font-size: var(--text-xl);
    font-weight: 500;
    color: var(--color-gray-900);
}

.tech-card-desc {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    line-height: 1.5;
}

/* Partner Technologies */
.technology-row-partner {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-6);
    margin-top: var(--space-16);
    margin-bottom: var(--space-16);
}

.partner-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    padding: var(--space-8) var(--space-6);
    min-height: 220px;
}

/* Unify tech-card (accent-bar) layout: row1 = bar+icon(+title), row2 = description */
.tech-card.accent-bar {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-auto-rows: auto;
    align-items: center;
    gap: var(--space-4);
}

/* Ensure content runs under the first row across full width */
.tech-card.accent-bar .tech-card-content {
    grid-column: 1 / -1;
}

/* Partner icon row should occupy the first row full width */
.partner-card .partner-icon-row {
    grid-column: 1 / -1;
}

.tech-card.accent-bar .tech-icon-row,
.partner-icon-row {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
    grid-column: 1 / -1;
    justify-content: flex-start;
}

.tech-card.accent-bar .tech-icon-row .tech-bar,
.partner-icon-row .tech-bar {
    width: 2px;
    height: 48px;
    background: var(--color-gray-400);
    border-radius: var(--radius-sm);
    margin: 0;
    flex-shrink: 0;
}

/* Row for open-source tech cards: bar + icon + title */
/* merged into grouped rule with .partner-icon-row */

/* merged into grouped rule with .partner-icon-row .tech-bar */

/* Team Page */
.team-main {
    padding-top: var(--header-height);
    padding-left: var(--space-16);
    padding-right: var(--space-16);
}

.team-section {
    margin-bottom: var(--space-24);
}

.team-section:last-child {
    margin-bottom: 0;
}

.team-h2 {
    font-family: var(--font-primary);
    font-size: var(--text-5xl);
    font-weight: 500;
    color: var(--color-gray-900);
    text-align: center;
    margin-bottom: var(--space-6);
    letter-spacing: 0.05em;
}

.team-h3 {
    font-family: var(--font-primary);
    font-size: var(--text-3xl);
    font-weight: 500;
    color: var(--color-gray-900);
    margin-bottom: var(--space-8);
    text-align: center;
}

.team-lead {
    font-family: var(--font-secondary);
    font-size: var(--text-xl);
    color: var(--color-gray-600);
    text-align: center;
    line-height: 1.8;
    max-width: 768px;
    margin: 0 auto;
}

/* Team Values Card */
.team-values-card,
.team-belief-card,
.team-experts-card {
    background: var(--color-white);
    border: 1.5px solid #E5E7EB;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(23, 37, 84, 0.08);
    padding: var(--space-12);
}

.team-values-lead {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    text-align: center;
    margin-bottom: var(--space-12);
}

.team-values-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
}

.team-value-box,
.team-belief-box {
    background: var(--color-white);
    border: 1.5px solid #E5E7EB;
    border-radius: 16px;
    padding: var(--space-6);
    box-shadow: 0 2px 8px rgba(23, 37, 84, 0.04);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-bottom: 0;
}

.team-value-gradient,
.team-belief-gradient {
    width: 8px;
    height: 64px;
    background: var(--gradient-tech);
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

/* Team page tech-icon-row for tech-bar design */
.team-value-box .tech-icon-row,
.team-belief-box .tech-icon-row {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-2);
}

/* Careers benefit box tech-icon-row - left align title */
.careers-benefit-box.tech-card.accent-bar .tech-icon-row {
    justify-content: flex-start;
}

/* Careers opening box tech-icon-row - space between for button positioning */
.careers-opening-box.tech-card.accent-bar .tech-icon-row {
    justify-content: space-between;
}

.team-value-title,
.team-belief-title {
    font-family: var(--font-primary);
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--color-gray-900);
    margin-bottom: var(--space-2);
}

.team-value-desc,
.team-belief-desc {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* Team Belief Grid */
.team-belief-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-10);
}

/* Team Experts */
.team-experts-row {
    display: flex;
    justify-content: center;
    gap: var(--space-10);
    flex-wrap: wrap;
}

.team-expert-box {
    background: var(--color-white);
    border: 1.5px solid #E5E7EB;
    border-radius: 16px;
    padding: var(--space-6);
    box-shadow: 0 2px 8px rgba(23, 37, 84, 0.04);
    text-align: center;
    flex: 0 1 280px;
    margin-bottom: 0;
}

.team-expert-photo {
    width: 96px;
    height: 96px;
    margin: 0 auto var(--space-4);
    border-radius: 50%;
    overflow: hidden;
}

.team-expert-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-expert-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.team-expert-name {
    font-family: var(--font-primary);
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--color-gray-900);
}

.team-expert-role {
    font-size: var(--text-base);
    color: #6366F1;
}

.team-expert-skill {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}

/* Services Page */
.services-main {
    padding-top: var(--header-height);
    padding-left: var(--space-16);
    padding-right: var(--space-16);
}

.services-h2 {
    font-family: var(--font-primary);
    font-size: var(--text-5xl);
    font-weight: 500;
    color: var(--color-gray-900);
    text-align: center;
    margin-bottom: var(--space-6);
    letter-spacing: 0.05em;
}

.services-h3 {
    font-family: var(--font-primary);
    font-size: var(--text-4xl);
    font-weight: 500;
    color: var(--color-gray-900);
    margin-bottom: var(--space-8);
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.services-lead {
    font-family: var(--font-secondary);
    font-size: var(--text-xl);
    color: var(--color-gray-600);
    text-align: center;
    line-height: 1.8;
    max-width: 768px;
    margin: 0 auto var(--space-16);
}

/* Services Framework Section */
.services-framework-card {
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    box-shadow: 0 4px 16px rgba(23, 37, 84, 0.08);
    padding: var(--space-12);
    margin: var(--space-8) 0;
}

.services-framework-row {
    display: flex;
    gap: var(--space-8);
    justify-content: center;
    align-items: stretch;
    flex-wrap: wrap;
}

.services-framework-box {
    background: var(--color-white);
    border: 1.5px solid #E5E7EB;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(23, 37, 84, 0.08);
    padding: var(--space-8);
    flex: 1 1 280px;
    max-width: 360px;
    text-align: center;
}

.services-framework-title {
    font-family: var(--font-primary);
    font-size: var(--text-xl);
    font-weight: 500;
    color: var(--color-gray-900);
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
}

.services-framework-desc {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* Services Detail Section */
.services-detail-section {
    padding: var(--space-16) 0;
    margin: 0 var(--space-16) ;
}

.services-detail-card {
    background: var(--color-white);
    border: 1.5px solid #E5E7EB;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(23, 37, 84, 0.08);
    padding: var(--space-12);
    max-width: 1100px;
    margin: 0 auto var(--space-12);
}

.services-detail-row {
    display: flex;
    gap: var(--space-12);
    align-items: center;
}

.services-detail-left {
    flex: 0 0 220px;
    text-align: center;
}

.services-detail-right {
    flex: 1 1 auto;
    max-width: 960px;
}

.services-detail-illust {
    width: 100%;
    max-width: 180px;
    height: auto;
    max-height: 140px;
    object-fit: contain;
    margin-bottom: var(--space-3);
}

.services-detail-illust-caption {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}

/* Title and lead styling to match card header design */
.services-detail-title {
    font-family: var(--font-primary);
    font-size: var(--text-4xl);
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--space-4);
}

.services-detail-lead {
    font-family: var(--font-secondary);
    font-size: var(--text-lg);
    color: var(--color-gray-700);
    line-height: 1.8;
    margin-bottom: var(--space-8);
}

.services-detail-features-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.services-detail-features-box {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
}

.services-detail-features-box--gray {
    background: var(--color-gray-50);
}

.services-detail-features-title {
    font-family: var(--font-primary);
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--color-gray-900);
    margin-bottom: var(--space-4);
}

.services-detail-features-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.services-detail-features-list li {
    font-size: var(--text-base);
    color: var(--color-gray-700);
    line-height: 1.6;
    position: relative;
    padding-left: var(--space-6);
}

.services-detail-features-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
    font-size: var(--text-xl);
}

/* Careers Page */
.careers-header {
    background: var(--color-white);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.careers-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 32px;
    height: 64px;
    max-width: var(--max-width);
    margin: 0 auto;
}

.careers-nav-logo {
    font-family: var(--font-primary);
    font-size: 24px;
    font-weight: 700;
    color: #111;
    text-decoration: none;
}

.careers-nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.careers-nav-link {
    font-family: var(--font-secondary);
    font-size: 16px;
    color: #4B5563;
    text-decoration: none;
    transition: color 0.2s;
}

.careers-nav-link:hover {
    color: #111;
}

.careers-nav-lang {
    font-family: var(--font-secondary);
    font-size: 16px;
    color: #4B5563;
    background: #F3F4F6;
    border-radius: 8px;
    padding: 7px 24px 8px 24px;
    margin-left: 16px;
    text-decoration: none;
    transition: background 0.2s;
}

.careers-nav-lang:hover {
    background: #E5E7EB;
}

.careers-main {
    max-width: 1280px;
    margin: 0 auto;
    padding: 128px 64px 96px 64px;
    background: #fff;
}

.careers-hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 96px;
}

.careers-hero-title {
    font-family: var(--font-primary);
    font-size: 36px;
    font-weight: 500;
    color: #111;
    letter-spacing: 0.02em;
    margin-bottom: 24px;
    text-align: center;
}

.careers-hero-lead {
    font-family: var(--font-secondary);
    font-size: 16px;
    color: #333;
    line-height: 1.7;
    letter-spacing: 0.02em;
    text-align: center;
    max-width: 768px;
}

.careers-openings {
    margin-bottom: 96px;
}

.careers-section-title {
    font-family: var(--font-primary);
    font-size: 24px;
    font-weight: 500;
    color: #111;
    letter-spacing: 0.02em;
    margin-bottom: 48px;
    text-align: center;
}

.careers-openings-list {
    display: flex;
    flex-wrap: wrap;
    gap: 48px;
    justify-content: center;
    margin-bottom: 96px;
}

.careers-opening-box {
    background: #fff;
    border: 1.5px solid #E5E7EB;
    border-radius: 16px;
    width: 370px;
    min-height: 174px;
    display: flex;
    flex-direction: column;
    padding: 26px;
    gap: 18px;
    box-sizing: border-box;
    box-shadow: 0 4px 16px rgba(23, 37, 84, 0.08);
}

.careers-opening-title {
    font-family: var(--font-primary);
    font-size: 20px;
    font-weight: 500;
    color: #111;
    margin-bottom: 8px;
}

.careers-opening-meta {
    font-family: var(--font-secondary);
    font-size: 16px;
    color: #333;
    margin-bottom: 8px;
}

.careers-opening-icon {
    margin-right: 8px;
}

.careers-opening-desc {
    font-family: var(--font-secondary);
    font-size: 16px;
    color: #333;
    margin-bottom: auto;
}

.careers-opening-btn {
    background: #6B7280;
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 8px 16px;
    font-family: var(--font-secondary);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    transition: background-color 0.2s;
    flex-shrink: 0;
    margin-left: auto;
}

.careers-opening-btn:hover {
    background-color: #4B5563;
}

.careers-benefits-list {
    display: flex;
    flex-wrap: wrap;
    gap: 32px;
    justify-content: center;
}

.careers-benefit-box {
    background: #fff;
    border: 1.5px solid #E5E7EB;
    border-radius: 16px;
    width: 370px;
    min-height: 174px;
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    padding: 26px;
    gap: 18px;
    box-sizing: border-box;
    box-shadow: 0 4px 16px rgba(23, 37, 84, 0.08);
}

.careers-benefit-icon {
    font-size: 30px;
    color: #000;
    margin-top: 2px;
    flex-shrink: 0;
}

.careers-benefit-content {
    display: flex;
    flex-direction: column;
}

.careers-benefit-title {
    font-family: var(--font-primary);
    font-size: 18px;
    font-weight: 500;
    color: #111;
    margin-bottom: 10px;
}

.careers-benefit-desc {
    font-family: var(--font-secondary);
    font-size: 16px;
    color: #333;
}

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

/* Desktop First Approach */

/* Large Tablet (1024px and below) */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--space-10);
    }
    
    .section {
        padding: var(--space-12) var(--space-10);
    }
    
    .hero-title {
        font-size: var(--text-5xl);
    }
}

/* Tablet (768px and below) */
@media (max-width: 768px) {
    :root {
        font-size: 15px;
    }
    
    /* Hide desktop navigation */
    .header .nav-links {
        display: none;
    }
    
    /* Show mobile menu toggle */
    .mobile-menu-toggle {
        display: block;
    }
    
    .container {
        padding: 0 var(--space-6);
    }
    
    .header-content {
        padding: 0 var(--space-6);
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-title {
        font-size: var(--text-4xl);
    }
    
    .section-title {
        font-size: var(--text-3xl);
    }
    
    /* Grid adjustments */
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    
    .content-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    
    /* Page specific grids */
    .approach-container {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    /* Team page responsive */
    .team-values-row,
    .team-belief-row {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .team-expert-photo {
        width: 72px;
        height: 72px;
    }
    
    /* Careers page responsive */
    .careers-main {
        padding: 64px 24px 48px 24px;
    }
    
    .careers-openings-list,
    .careers-benefits-list {
        flex-direction: column;
        gap: 24px;
    }
    
    .careers-opening-box,
    .careers-benefit-box {
        width: 100%;
        max-width: 100%;
    }
    
    /* Philosophy page responsive */
    .philosophy-detail-row {
        flex-direction: column;
        gap: var(--space-6);
    }
    
    .philosophy-detail-left {
        flex: 1 1 auto;
    }
    
    .philosophy-detail-features-row {
        grid-template-columns: 1fr;
    }
    
    /* Approach page responsive */
    .approach-boxes-row {
        display: flex;
        flex-direction: column;
        gap: var(--space-8);
        align-items: center;
    }
    
    .approach-box-accent {
        display: none;
    }
    
    .approach-box:nth-of-type(1),
    .approach-box:nth-of-type(3),
    .approach-box:nth-of-type(5) {
        transform: rotate(0deg);
    }
    
    .approach-impact-row {
        flex-direction: column;
        gap: var(--space-6);
    }
    
    .approach-impact-left {
        flex: 1 1 auto;
    }
    
    .approach-impact-features-row {
        grid-template-columns: 1fr;
    }
    
    .approach-bottom-row {
        flex-direction: column;
        align-items: center;
    }
    
    /* Services page responsive */
    .services-framework-row {
        flex-direction: column;
        align-items: center;
    }
    
    .services-framework-box {
        max-width: 100%;
    }
    
    .services-detail-row {
        flex-direction: column;
        gap: var(--space-6);
    }
    
    .services-detail-left {
        flex: 1 1 auto;
    }
    
    .services-detail-features-row {
        grid-template-columns: 1fr;
    }
    
    /* Technology page responsive */
    .technology-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-4);
    }
    
    .tech-card--wide {
        grid-column: span 2;
    }
    
    /* .technology-row-partner uses auto-fit; no fixed columns at this breakpoint */
}

/* Mobile (640px and below) */
@media (max-width: 640px) {
    :root {
        font-size: 14px;
    }
    
    .logo-image {
        max-width: 150px;
        max-height: 40px;
    }
    
    .section {
        padding: var(--space-10) var(--space-6);
    }
    
    .hero-content,
    .hero-image,
    .animation-container {
        flex: 1 1 100%;
    }
    
    .hero-title {
        font-size: var(--text-3xl);
        line-height: 1.3;
    }
    
    .hero-subtitle {
        font-size: var(--text-lg);
    }
    
    /* All grids to single column */
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4,
    .content-grid,
    .tech-grid,
    .career-grid,
    .technology-grid,
    .technology-row-partner {
        grid-template-columns: 1fr;
    }
    
    .tech-card--wide {
        grid-column: span 1;
    }
    
    /* Card adjustments */
    .card {
        padding: var(--space-6);
    }
    
    /* Button adjustments */
    .button {
        width: 100%;
        padding: var(--space-4) var(--space-6);
    }
}

/* Small Mobile (480px and below) */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-3);
    }
    
    .header-content {
        padding: 0 var(--space-4);
    }
    
    .section-title {
        font-size: var(--text-2xl);
    }
    
    .card-title {
        font-size: var(--text-xl);
    }
}

/* ========================================
   Animations
   ======================================== */

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

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

.animate-fadeIn {
    animation: fadeIn 0.6s ease-out;
}

.animate-slideIn {
    animation: slideIn 0.6s ease-out;
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
    .header,
    .nav-links {
        display: none;
    }
    
    .main {
        padding-top: 0;
    }
    
    .section {
        page-break-inside: avoid;
    }
}

/* Tablet and below: switch to mobile nav earlier */
@media (max-width: 1024px) {
    /* Hide desktop navigation */
    .header .nav-links { display: none; }
    /* Show mobile menu toggle */
    .mobile-menu-toggle { display: block; }
    /* Keep nav links visible inside the mobile menu overlay */
    .mobile-menu .nav-links { display: flex; }
}