/* ==========================================
   RESET & BASE STYLES
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Primary Colors - Kizan Brand (from logo) */
    --primary: #003d6b;
    --primary-dark: #002847;
    --primary-light: #0055a0;

    /* Secondary Colors - Kizan Orange Accent */
    --secondary: #ff8c00;
    --accent: #ff8c00;

    /* Neutrals */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* Semantic Colors */
    --success: #10b981;
    --warning: #ff8c00;
    --error: #ef4444;

    /* Background & Text - Clean White Theme */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-dark: #1f2937;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-light: #ffffff;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'Fira Code', 'Courier New', monospace;

    /* 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);

    /* Borders */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

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

body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ==========================================
   UTILITIES
   ========================================== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}


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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 48rem;
    margin: 0 auto;
}

/* ==========================================
   NAVIGATION
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    text-decoration: none;
    color: var(--primary);
    position: relative;
}

.logo::after {
    content: '';
    position: absolute;
    bottom: -2px;
    right: 0;
    width: 30%;
    height: 3px;
    background: var(--secondary);
    border-radius: 2px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
    padding: 0.5rem 0;
}

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

.nav-cta {
    background: var(--primary);
    color: var(--text-light);
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.nav-cta:hover {
    background: var(--primary-dark);
    color: var(--text-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--spacing-3xl) 0;
    overflow: hidden;
    background: linear-gradient(135deg, #ffffff 0%, #f9fafb 50%, #ffffff 100%);
}

.hero-background {
    position: absolute;
    inset: 0;
    opacity: 0.4;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(to right, var(--gray-200) 1px, transparent 1px),
        linear-gradient(to bottom, var(--gray-200) 1px, transparent 1px);
    background-size: 4rem 4rem;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(4rem, 4rem);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 56rem;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-block;
    background: transparent;
    color: var(--secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-lg);
    border: 2px solid var(--secondary);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 48rem;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-3xl);
}

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    font-family: var(--font-sans);
}

.btn-primary {
    background: var(--primary);
    color: var(--text-light);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 2px solid var(--gray-300);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    max-width: 48rem;
    margin: 0 auto;
}

.stat {
    text-align: center;
    padding: var(--spacing-md);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ==========================================
   MISSION SECTION
   ========================================== */
.mission {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-primary);
}

.mission-content {
    max-width: 56rem;
    margin: 0 auto;
    text-align: center;
}

.mission-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

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

.pillar {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.pillar:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.pillar-icon {
    width: 96px;
    height: 96px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pillar h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.pillar p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* ==========================================
   SERVICES SECTION
   ========================================== */
.services {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 500px), 1fr));
    gap: var(--spacing-xl);
    max-width: 72rem;
    margin: 0 auto;
}

.service-card {
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--gray-200);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: var(--text-light);
}

.service-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.service-description {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.service-features {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.service-features li {
    padding: 0.75rem 0;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--gray-200);
    font-size: 0.9375rem;
}

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

.service-features li::before {
    content: "✓";
    color: var(--success);
    font-weight: bold;
    margin-right: 0.75rem;
}

.service-link {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    transition: all var(--transition-fast);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    font-family: var(--font-sans);
    font-size: 1rem;
}

.service-link:hover {
    color: var(--primary-dark);
    transform: translateX(4px);
}

.footer-link {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    font-family: var(--font-sans);
    text-align: left;
}

.footer-link:hover {
    color: var(--secondary);
}

/* ==========================================
   FRAMEWORK SECTION
   ========================================== */
.framework {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-dark);
    color: var(--text-light);
}

.framework .section-label {
    color: var(--primary-light);
}

.framework .section-title {
    color: var(--text-light);
}

.framework-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 500px), 1fr));
    gap: var(--spacing-3xl);
    align-items: center;
}

.framework-intro {
    font-size: 1.125rem;
    color: var(--gray-300);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.framework-phases {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.phase {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-base);
}

.phase:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateX(8px);
}

.phase-number {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-light);
    opacity: 0.6;
    flex-shrink: 0;
}

.phase-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--text-light);
}

.phase-content p {
    color: var(--gray-400);
    font-size: 0.9375rem;
}

.accelerator-diagram {
    position: relative;
    width: 100%;
    max-width: 500px;
    aspect-ratio: 1;
    margin: 0 auto;
}

.diagram-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 40px rgba(0, 61, 107, 0.2);
    z-index: 2;
}

.diagram-core {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-light);
    text-align: center;
}

.diagram-ring {
    position: relative;
    width: 100%;
    height: 100%;
}

.diagram-item {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120px;
    height: 120px;
    transform: translate(-50%, -50%) rotate(calc(var(--index) * 90deg)) translateY(-200px);
}

.item-label {
    display: block;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--text-light);
    transform: rotate(calc(var(--index) * -90deg));
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
}

.diagram-item:hover .item-label {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--primary-light);
    transform: rotate(calc(var(--index) * -90deg)) scale(1.1);
}

/* ==========================================
   PLATFORM SECTION
   ========================================== */
.platform {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.platform-header {
    text-align: center;
    max-width: 56rem;
    margin: 0 auto var(--spacing-3xl);
}

.platform-intro {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.platform-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
    gap: var(--spacing-lg);
    max-width: 72rem;
    margin: 0 auto;
}

.platform-feature {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    border: 1px solid var(--gray-200);
}

.platform-feature:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-visual {
    margin-bottom: var(--spacing-md);
}

.hexagon {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto;
}

.hexagon svg {
    width: 100%;
    height: 100%;
    color: var(--primary);
}

.feature-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.platform-feature h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.platform-feature p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ==========================================
   ABOUT SECTION
   ========================================== */
.about {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-primary);
}

.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 500px), 1fr));
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.highlight {
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary);
}

.highlight h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.highlight p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.timeline {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.timeline-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
    transition: all var(--transition-base);
}

.timeline-item:hover,
.timeline-item.active {
    background: linear-gradient(135deg, rgba(0, 120, 212, 0.1), rgba(139, 92, 246, 0.1));
    transform: translateX(8px);
}

.timeline-year {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary);
    flex-shrink: 0;
    min-width: 80px;
}

.timeline-content h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.timeline-content p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

/* ==========================================
   MODAL
   ========================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    position: relative;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    padding: var(--spacing-2xl);
    z-index: 10000;
    animation: slideUp 0.3s ease;
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
    border: none;
    background: var(--gray-100);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    color: var(--gray-600);
    z-index: 10001;
}

.modal-close:hover {
    background: var(--gray-200);
    color: var(--text-primary);
    transform: rotate(90deg);
}

.modal-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.modal-title {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.modal-description {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

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

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

/* ==========================================
   CONTACT FORM IN MODAL
   ========================================== */

.contact-form-container {
    position: relative;
}

.contact-form {
    text-align: left;
}

.form-stack {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.form-group {
    width: 100%;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: all var(--transition-fast);
    background: var(--bg-primary);
    color: var(--text-primary);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-400);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 61, 107, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    width: 100%;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    background: var(--primary);
    color: var(--text-light);
}

.btn-submit:hover {
    background: var(--primary-dark);
}

.form-success {
    display: none;
    text-align: center;
    padding: var(--spacing-3xl);
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
}

.form-success.show {
    display: block;
}

.success-icon {
    width: 80px;
    height: 80px;
    background: var(--success);
    color: var(--text-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
}

.form-success h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.form-success p {
    color: var(--text-secondary);
    font-size: 1.0625rem;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
    background: var(--bg-dark);
    color: var(--gray-400);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
    max-width: 320px;
}

.footer-logo {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.footer-logo::after {
    bottom: 0;
}

.footer-brand p {
    color: var(--gray-400);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.footer-links {
    display: contents;
}

.footer-column h4 {
    color: var(--text-light);
    font-weight: 700;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-md);
}

.footer-column ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-column a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--secondary);
}

.footer-bottom {
    display: flex;
    justify-content: center;
    align-items: center;
    padding-top: var(--spacing-md);
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */
@media (max-width: 1024px) {
    .section-title {
        font-size: 2rem;
    }

    .accelerator-diagram {
        max-width: 400px;
    }

    .diagram-center {
        width: 150px;
        height: 150px;
    }

    .diagram-core {
        font-size: 1.25rem;
    }

    .diagram-item {
        width: 100px;
        height: 100px;
        transform: translate(-50%, -50%) rotate(calc(var(--index) * 90deg)) translateY(-170px);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
        --spacing-3xl: 4rem;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 4rem;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all var(--transition-base);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 1.75rem;
    }


    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .footer-brand {
        max-width: 100%;
    }

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

    .diagram-item {
        width: 80px;
        height: 80px;
        transform: translate(-50%, -50%) rotate(calc(var(--index) * 90deg)) translateY(-140px);
    }

    .item-label {
        font-size: 0.875rem;
    }
}

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

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .platform-features {
        grid-template-columns: 1fr;
    }

    .accelerator-diagram {
        max-width: 300px;
    }

    .diagram-center {
        width: 120px;
        height: 120px;
    }

    .diagram-core {
        font-size: 1rem;
    }

    .diagram-item {
        width: 70px;
        height: 70px;
        transform: translate(-50%, -50%) rotate(calc(var(--index) * 90deg)) translateY(-110px);
    }

    .item-label {
        font-size: 0.75rem;
    }
}

/* ==========================================
   ANIMATIONS & INTERACTIONS
   ========================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* Smooth scroll behavior for iOS */
@supports (-webkit-overflow-scrolling: touch) {
    html {
        -webkit-overflow-scrolling: touch;
    }
}