/* ============================================
   COLOR PALETTE & DESIGN SYSTEM
   ============================================ */
:root {
    --primary-color: #000000;
    --accent-color: #E63946;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-light: #999999;
    --bg-white: #ffffff;
    --bg-light: #f9f9f9;
    --bg-gray: #f5f5f5;
    --border-color: #e5e7eb;
    --border-light: #f0f0f0;
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2.25rem, 4.5vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
}

h4 {
    font-size: 1.5rem;
    font-weight: 600;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    line-height: 1.7;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.2s ease;
}

a:hover {
    opacity: 0.7;
}

/* ============================================
   NAVIGATION BAR
   ============================================ */
.navbar {
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s ease;
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--text-primary);
}

.header-social-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    border-radius: var(--radius-sm);
}

.social-link:hover {
    color: var(--text-primary);
    background-color: var(--bg-gray);
    opacity: 1;
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.hamburger {
    display: none;
    flex-direction: column;
    background: transparent;
    border: none;
    cursor: pointer;
    gap: 6px;
    padding: 4px;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero-section {
    background-color: var(--bg-white);
    padding: var(--spacing-3xl) var(--spacing-lg);
    text-align: center;
}

.hero-container {
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2.75rem, 5.5vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.hero-title .highlight {
    color: var(--accent-color);
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-credentials {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.credentials-text {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

/* ============================================
   HERO NEWSLETTER SECTION (Legacy - for reference)
   ============================================ */
.hero-newsletter {
    background-color: var(--bg-white);
    padding: var(--spacing-3xl) var(--spacing-lg);
    text-align: center;
}

.hero-newsletter-container {
    max-width: 800px;
    margin: 0 auto;
}

.hero-newsletter-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.hero-newsletter-title .highlight {
    color: var(--accent-color);
}

.hero-newsletter-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-2xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.newsletter-cta {
    margin-bottom: var(--spacing-2xl);
}

.subscribe-embed {
    max-width: 600px;
    margin: 0 auto var(--spacing-md);
}

.subscribe-embed iframe {
    width: 100%;
    max-width: 100%;
    border-radius: var(--radius-md);
}

.subscribe-note {
    font-size: 0.9rem;
    color: var(--text-light);
    margin: 0;
}

.social-proof {
    margin-top: var(--spacing-2xl);
}

.proof-text {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
}

.logo-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-lg);
    align-items: center;
}

.logo-item {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    opacity: 0.7;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about-section {
    background-color: var(--bg-white);
    padding: var(--spacing-3xl) var(--spacing-lg);
}

.about-container {
    max-width: 1200px;
    margin: 0 auto;
}

.about-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.about-role {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.about-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.about-links {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-top: var(--spacing-lg);
}

.about-links .btn {
    font-size: 0.95rem;
    padding: var(--spacing-sm) var(--spacing-lg);
}

/* ============================================
   KEY MESSAGE SECTION
   ============================================ */
.key-message {
    background-color: var(--bg-light);
    padding: var(--spacing-3xl) var(--spacing-lg);
    text-align: center;
}

.key-message-container {
    max-width: 900px;
    margin: 0 auto;
}

.key-message-title {
    font-size: clamp(2.25rem, 4.5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

/* ============================================
   FRAMEWORKS SECTION
   ============================================ */
.frameworks-section {
    background-color: var(--bg-white);
    padding: var(--spacing-3xl) var(--spacing-lg);
}

.frameworks-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: clamp(2.25rem, 4.5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.frameworks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

/* Featured Framework Layout */
.frameworks-examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
}

.framework-featured {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    background-color: var(--bg-light);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.framework-featured-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.framework-thumbnail {
    max-width: 100%;
    width: 100%;
    height: auto;
    max-height: 500px;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease;
}

.framework-thumbnail:hover {
    transform: scale(1.02);
}

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

.framework-featured-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-top: var(--spacing-md);
}

.framework-card {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all 0.3s ease;
}

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

.framework-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
}

.framework-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.framework-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.framework-link {
    font-weight: 600;
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.framework-link:hover {
    color: var(--accent-color);
}

/* ============================================
   FEATURED BOOK SECTION
   ============================================ */
.featured-book-section {
    background-color: var(--bg-light);
    padding: var(--spacing-3xl) var(--spacing-lg);
}

.featured-book-container {
    max-width: 1200px;
    margin: 0 auto;
}

.book-content-wrapper {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.book-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.book-title {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.book-subtitle {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.book-description {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.book-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* ============================================
   INSIGHTS SECTION
   ============================================ */
.insights-section {
    background-color: var(--bg-white);
    padding: var(--spacing-3xl) var(--spacing-lg);
}

.insights-container {
    max-width: 1200px;
    margin: 0 auto;
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.insight-card {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all 0.3s ease;
}

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

.insight-meta {
    margin-bottom: var(--spacing-md);
}

.insight-date {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-light);
}

.insight-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    line-height: 1.3;
}

.insight-excerpt {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.insight-link {
    font-weight: 600;
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.insight-link:hover {
    color: var(--accent-color);
}

.insights-footer {
    text-align: center;
    margin-top: var(--spacing-2xl);
}

/* ============================================
   PERSPECTIVES SECTION
   ============================================ */
.perspectives-section {
    background-color: var(--bg-light);
    padding: var(--spacing-3xl) var(--spacing-lg);
}

.perspectives-container {
    max-width: 1200px;
    margin: 0 auto;
}

.perspectives-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.perspective-card {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all 0.3s ease;
}

.perspective-card .perspective-description {
    text-align: left;
}

.perspective-card .expertise-list {
    text-align: left;
}

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

.perspective-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.perspective-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.perspective-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.perspective-card .expertise-list {
    margin-top: var(--spacing-md);
    text-align: left;
}

/* ============================================
   FOCUS SECTION
   ============================================ */
.focus-section {
    background-color: var(--bg-white);
    padding: var(--spacing-3xl) var(--spacing-lg);
}

.focus-container {
    max-width: 1200px;
    margin: 0 auto;
}

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

.focus-card {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all 0.3s ease;
}

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

.focus-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.focus-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   NEWSLETTER SECTION
   ============================================ */
.newsletter-section {
    background-color: var(--bg-light);
    padding: var(--spacing-3xl) var(--spacing-lg);
    text-align: center;
}

.newsletter-container {
    max-width: 700px;
    margin: 0 auto;
}

.newsletter-section .section-title {
    margin-bottom: var(--spacing-md);
}

.newsletter-section .section-subtitle {
    margin-bottom: var(--spacing-xl);
    color: var(--text-secondary);
}

.newsletter-section .newsletter-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.newsletter-section .subscribe-note {
    font-size: 0.9rem;
    color: var(--text-light);
    margin: 0;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
    background-color: var(--text-primary);
    color: var(--bg-white);
    padding: var(--spacing-3xl) var(--spacing-lg);
    text-align: center;
}

.cta-container {
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(2.25rem, 4.5vw, 3.5rem);
    font-weight: 700;
    color: var(--bg-white);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em;
}

.cta-description {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--text-primary);
    color: var(--bg-white);
    border-color: var(--text-primary);
}

.btn-primary:hover {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--bg-white);
    opacity: 1;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background-color: var(--text-primary);
    color: var(--bg-white);
    opacity: 1;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background-color: var(--bg-white);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-3xl) var(--spacing-lg) var(--spacing-lg);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.footer-brand {
    flex: 1;
    min-width: 300px;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.footer-tagline {
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    flex-wrap: wrap;
}

.footer-links a {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    background-color: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    text-align: center;
    min-width: 120px;
}

.footer-links a:hover {
    color: var(--bg-white);
    background-color: var(--text-primary);
    border-color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    opacity: 1;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-lg);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 0;
}

/* ============================================
   PAGE HERO (for other pages)
   ============================================ */
.page-hero {
    background-color: var(--bg-white);
    padding: var(--spacing-3xl) var(--spacing-lg);
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.page-hero h1 {
    font-size: clamp(2.75rem, 5.5vw, 4.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.page-hero p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ============================================
   CONTENT SECTION (for other pages)
   ============================================ */
.content-section {
    padding: var(--spacing-3xl) var(--spacing-lg);
}

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

.content-section h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.01em;
}

.section-intro {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
    max-width: 800px;
}

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

/* ============================================
   EXPERTISE PAGE STYLES
   ============================================ */
.expertise-details {
    max-width: 800px;
    margin: 0 auto;
}

.expertise-details p {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    color: var(--text-secondary);
}

.expertise-image-wrapper {
    margin: var(--spacing-2xl) 0;
    text-align: center;
}

.expertise-image {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.framework-image-wrapper {
    margin: var(--spacing-2xl) 0;
    text-align: center;
}

.framework-image-link {
    display: inline-block;
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
}

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

.framework-full-image {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-lg);
}

.framework-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: var(--radius-lg);
}

.framework-image-link:hover .framework-image-overlay {
    opacity: 1;
}

.framework-image-text {
    color: var(--bg-white);
    font-weight: 600;
    font-size: 1.1rem;
}

.framework-download {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.expertise-list {
    list-style: none;
    margin-top: var(--spacing-md);
    margin-left: 0;
}

.expertise-list li {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    line-height: 1.8;
    padding-left: var(--spacing-md);
    position: relative;
}

.expertise-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.expertise-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

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

.expertise-text h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.expertise-text p {
    line-height: 1.8;
    color: var(--text-secondary);
}

/* ============================================
   PUBLICATIONS PAGE STYLES
   ============================================ */
.publications-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.publication-item {
    padding: var(--spacing-lg);
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--accent-color);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.publication-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.publication-item h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
    font-weight: 600;
}

.publication-book {
    background-color: var(--bg-light);
    border-left-width: 6px;
    border-left-color: var(--accent-color);
    padding: var(--spacing-lg) var(--spacing-xl);
}

.publication-book h3 {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.3rem;
}

.publication-meta {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin: 0;
}

.publication-meta em {
    font-style: italic;
    color: var(--text-primary);
}

.publications-note {
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-lg);
    background-color: var(--bg-light);
    border-radius: var(--radius-md);
    border-top: 4px solid var(--accent-color);
}

.publications-note p {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.7;
}

.publications-note a {
    color: var(--accent-color);
    font-weight: 600;
}

.publications-note a:hover {
    text-decoration: underline;
    opacity: 1;
}

/* ============================================
   CONTACT PAGE STYLES
   ============================================ */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.contact-info h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.contact-method {
    padding: var(--spacing-lg);
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--accent-color);
    border-radius: var(--radius-md);
}

.contact-method h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.contact-method p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.contact-link {
    display: inline-block;
    font-weight: 600;
    color: var(--accent-color);
    transition: color 0.3s ease;
}

.contact-link:hover {
    color: var(--text-primary);
    opacity: 1;
    text-decoration: underline;
}

.contact-form-wrapper {
    background-color: var(--bg-light);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.contact-form-wrapper h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: var(--font-sans);
    transition: border-color 0.3s ease;
    background-color: var(--bg-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--text-primary);
}

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

.form-message {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.form-message.success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.form-message.error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.form-message.loading {
    background-color: #dbeafe;
    color: #1e40af;
    border: 1px solid #93c5fd;
}

#submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.expectation-item {
    background-color: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    border-top: 4px solid var(--accent-color);
}

.expectation-item h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.expectation-item p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   FRAMEWORKS DETAIL PAGE STYLES
   ============================================ */
.framework-detail-section {
    padding: var(--spacing-3xl) var(--spacing-lg);
}

.framework-detail-container {
    max-width: 1000px;
    margin: 0 auto;
}

.framework-detail-header {
    margin-bottom: var(--spacing-xl);
}

.framework-detail-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em;
}

.framework-detail-description {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    max-width: 800px;
}

.framework-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.framework-detail-item {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.framework-detail-item h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

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

.framework-list li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
    color: var(--text-secondary);
    line-height: 1.7;
}

.framework-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
    font-size: 1.2rem;
}

.framework-cta-section {
    background-color: var(--bg-light);
    padding: var(--spacing-3xl) var(--spacing-lg);
    text-align: center;
}

.framework-cta-container {
    max-width: 800px;
    margin: 0 auto;
}

.framework-cta-section h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em;
}

.framework-cta-section p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.framework-cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.framework-cta-buttons .btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.95rem;
}

.framework-cta-note {
    font-size: 0.95rem;
    color: var(--text-light);
    font-style: italic;
    margin: 0;
}

/* ============================================
   HAMBURGER MENU ACTIVE STATE
   ============================================ */
.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.nav-menu.active {
    display: flex;
}

/* ============================================
   MOBILE RESPONSIVE STYLES
   ============================================ */
@media screen and (max-width: 768px) {
    /* Optimized spacing for mobile */
    :root {
        --spacing-xs: 0.5rem;
        --spacing-sm: 0.875rem;
        --spacing-md: 1.25rem;
        --spacing-lg: 1.75rem;
        --spacing-xl: 2.5rem;
        --spacing-2xl: 3rem;
        --spacing-3xl: 3.5rem;
    }
    
    /* Typography adjustments for mobile */
    h1 {
        font-size: clamp(2.25rem, 7.5vw, 3.5rem);
        margin-bottom: var(--spacing-md);
        line-height: 1.2;
    }
    
    h2 {
        font-size: clamp(2rem, 6.5vw, 3rem);
        margin-bottom: var(--spacing-md);
        line-height: 1.25;
    }
    
    h3 {
        font-size: clamp(1.5rem, 5vw, 2rem);
        margin-bottom: var(--spacing-sm);
        line-height: 1.3;
    }
    
    p {
        margin-bottom: var(--spacing-md);
        font-size: 0.95rem;
        line-height: 1.5;
    }
    
    /* Balanced line-height for all text elements on mobile */
    body {
        line-height: 1.5;
    }
    
    .hero-subtitle,
    .hero-newsletter-subtitle,
    .section-subtitle,
    .about-description,
    .perspective-description,
    .focus-description,
    .book-description,
    .cta-description,
    .credentials-text,
    .subscribe-note {
        line-height: 1.5;
    }
    
    .key-message-title {
        line-height: 1.3;
    }
    
    /* Navigation */
    .nav-container {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .nav-logo {
        font-size: 1.1rem;
    }
    
    .hamburger {
        display: flex;
        z-index: 101;
    }
    
    .header-social-links {
        display: none;
    }
    
    .nav-menu {
        display: none;
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100vh;
        background-color: var(--bg-white);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-xl) var(--spacing-md);
        padding-top: calc(var(--spacing-xl) + 50px);
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        gap: var(--spacing-md);
        z-index: 100;
        overflow-y: auto;
        transform: translateX(100%);
        transition: transform 0.3s ease;
    }
    
    .nav-menu.active {
        display: flex;
        transform: translateX(0);
    }
    
    .nav-link {
        font-size: 1rem;
        padding: var(--spacing-xs) 0;
        width: 100%;
    }
    
    /* Hero Section */
    .hero-section {
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    .hero-title {
        font-size: clamp(2.25rem, 7.5vw, 4rem);
        margin-bottom: var(--spacing-md);
        line-height: 1.2;
    }
    
    .hero-subtitle {
        margin-bottom: var(--spacing-lg);
        font-size: 1.05rem;
        line-height: 1.5;
    }
    
    .hero-credentials {
        margin-top: var(--spacing-lg);
        padding-top: var(--spacing-md);
    }
    
    .credentials-text {
        font-size: 0.9rem;
        line-height: 1.5;
    }
    
    /* Hero Newsletter (legacy) */
    .hero-newsletter {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .hero-newsletter-title {
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-newsletter-subtitle {
        margin-bottom: var(--spacing-md);
        font-size: 1rem;
    }
    
    .newsletter-cta {
        margin-bottom: var(--spacing-md);
    }
    
    .social-proof {
        margin-top: var(--spacing-md);
    }
    
    .proof-text {
        font-size: 0.7rem;
        margin-bottom: var(--spacing-xs);
    }
    
    .logo-grid {
        gap: var(--spacing-xs);
    }
    
    .logo-item {
        font-size: 0.8rem;
    }
    
    /* About Section */
    .about-section {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .about-image {
        display: flex;
        justify-content: center;
        margin-bottom: var(--spacing-sm);
    }
    
    .about-image img {
        max-width: 180px;
        height: auto;
    }
    
    .about-text h2 {
        font-size: clamp(1.75rem, 6vw, 2.25rem);
        margin-bottom: var(--spacing-sm);
        line-height: 1.25;
    }
    
    .about-role {
        font-size: 1rem;
        margin-bottom: var(--spacing-md);
        line-height: 1.4;
    }
    
    .about-description {
        font-size: 0.95rem;
        margin-bottom: var(--spacing-md);
        line-height: 1.5;
    }
    
    .about-links {
        flex-direction: column;
        gap: var(--spacing-sm);
        margin-top: var(--spacing-md);
    }
    
    .about-links .btn {
        width: 100%;
        text-align: center;
        padding: var(--spacing-sm) var(--spacing-md);
        min-height: 44px; /* Accessibility: minimum touch target */
        font-size: 0.95rem;
    }
    
    /* Key Message */
    .key-message {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .key-message-title {
        font-size: clamp(2rem, 6.5vw, 3rem);
        line-height: 1.3;
    }
    
    /* Perspectives Section */
    .perspectives-section {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .perspectives-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        margin-top: var(--spacing-md);
    }
    
    .perspective-card {
        padding: var(--spacing-md);
    }
    
    .perspective-description {
        font-size: 0.95rem;
        margin-bottom: var(--spacing-md);
        line-height: 1.5;
    }
    
    .perspective-title {
        font-size: clamp(1.5rem, 5vw, 2rem);
        line-height: 1.3;
    }
    
    /* Featured Book Section */
    .featured-book-section {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .book-content-wrapper {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .book-image {
        margin-bottom: var(--spacing-sm);
    }
    
    .book-image img {
        max-width: 180px;
    }
    
    .book-title {
        font-size: clamp(1.75rem, 6vw, 2.25rem);
        margin-bottom: var(--spacing-sm);
        line-height: 1.25;
    }
    
    .book-subtitle {
        font-size: 1rem;
        margin-bottom: var(--spacing-md);
        line-height: 1.4;
    }
    
    .book-description {
        font-size: 0.95rem;
        margin-bottom: var(--spacing-md);
        line-height: 1.5;
    }
    
    .book-cta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .book-cta .btn {
        width: 100%;
        min-height: 44px;
    }
    
    /* Newsletter Section */
    .newsletter-section {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .newsletter-section .section-title {
        margin-bottom: var(--spacing-md);
    }
    
    .newsletter-section .section-subtitle {
        margin-bottom: var(--spacing-lg);
        font-size: 1rem;
        line-height: 1.5;
    }
    
    /* Frameworks Section */
    .frameworks-section {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .section-title {
        font-size: clamp(2rem, 6.5vw, 3rem);
        margin-bottom: var(--spacing-md);
        line-height: 1.25;
    }
    
    .section-subtitle {
        margin-bottom: var(--spacing-lg);
        font-size: 1rem;
        line-height: 1.5;
    }
    
    .frameworks-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        margin-top: var(--spacing-md);
    }
    
    .framework-card {
        padding: var(--spacing-md);
    }
    
    .frameworks-examples-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        margin-top: var(--spacing-md);
    }
    
    .framework-featured {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        padding: var(--spacing-md);
    }
    
    .framework-featured-cta .btn {
        min-height: 44px;
        width: 100%;
    }
    
    .framework-featured-image {
        order: 1;
        width: 100%;
        max-width: 100%;
        overflow: hidden;
    }
    
    .framework-thumbnail {
        max-width: 100%;
        width: 100%;
        height: auto;
        max-height: 300px;
        object-fit: contain;
    }
    
    .framework-featured-content {
        order: 2;
    }
    
    .framework-featured-cta {
        flex-direction: column;
    }
    
    .framework-featured-cta .btn {
        width: 100%;
        text-align: center;
    }
    
    /* Featured Book Section */
    .featured-book-section {
        padding: var(--spacing-xl) var(--spacing-sm);
    }
    
    .book-content-wrapper {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .book-image {
        display: flex;
        justify-content: center;
    }
    
    .book-image img {
        max-width: 180px;
    }
    
    .book-title {
        font-size: 1.75rem;
    }
    
    .book-subtitle {
        font-size: 1rem;
    }
    
    .book-description {
        font-size: 0.95rem;
    }
    
    .book-cta {
        justify-content: center;
        gap: var(--spacing-sm);
    }
    
    /* Insights Section */
    .insights-section {
        padding: var(--spacing-xl) var(--spacing-sm);
    }
    
    .insights-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        margin-top: var(--spacing-lg);
    }
    
    .insight-card {
        padding: var(--spacing-md);
    }
    
    .insight-title {
        font-size: 1.25rem;
    }
    
    .insights-footer {
        margin-top: var(--spacing-lg);
    }
    
    /* Perspectives Section */
    .perspectives-section {
        padding: var(--spacing-xl) var(--spacing-sm);
    }
    
    .perspectives-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        margin-top: var(--spacing-lg);
    }
    
    .perspective-card {
        padding: var(--spacing-md);
    }
    
    .perspective-icon {
        font-size: 2.5rem;
        margin-bottom: var(--spacing-sm);
    }
    
    /* Focus Section */
    .focus-section {
        padding: var(--spacing-xl) var(--spacing-sm);
    }
    
    .focus-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        margin-top: var(--spacing-lg);
    }
    
    .focus-card {
        padding: var(--spacing-md);
    }
    
    .focus-title {
        font-size: clamp(1.5rem, 5vw, 2rem);
        margin-bottom: var(--spacing-sm);
        line-height: 1.3;
    }
    
    .focus-description {
        font-size: 0.95rem;
        line-height: 1.5;
    }
    
    /* CTA Section */
    .cta-section {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .cta-title {
        font-size: clamp(2rem, 6.5vw, 3rem);
        margin-bottom: var(--spacing-md);
        line-height: 1.3;
    }
    
    .cta-description {
        font-size: 1rem;
        margin-bottom: var(--spacing-lg);
        line-height: 1.5;
    }
    
    /* Footer */
    .footer {
        padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
    }
    
    .footer-container {
        gap: var(--spacing-md);
    }
    
    .footer-links {
        gap: var(--spacing-sm);
    }
    
    .footer-links a {
        min-height: 44px; /* Accessibility: minimum touch target */
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    /* Footer */
    .footer {
        padding: var(--spacing-xl) var(--spacing-sm) var(--spacing-md);
    }
    
    .footer-container {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }
    
    .footer-logo {
        font-size: 1.25rem;
    }
    
    .footer-tagline {
        font-size: 0.9rem;
    }
    
    .footer-links {
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-sm);
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .footer-links a {
        font-size: 0.9rem;
        padding: var(--spacing-xs) var(--spacing-md);
        min-width: 100px;
    }
    
    .footer-bottom {
        padding-top: var(--spacing-md);
    }
    
    .footer-bottom p {
        font-size: 0.85rem;
    }
    
    /* Page Hero */
    .page-hero {
        padding: var(--spacing-xl) var(--spacing-sm);
    }
    
    .page-hero h1 {
        margin-bottom: var(--spacing-sm);
    }
    
    .page-hero p {
        font-size: 1rem;
    }
    
    /* Content Section */
    .content-section {
        padding: var(--spacing-xl) var(--spacing-sm);
    }
    
    .section-intro {
        font-size: 1rem;
        margin-bottom: var(--spacing-md);
    }
    
    /* Contact */
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .contact-form-wrapper {
        order: 1;
        padding: var(--spacing-md);
    }
    
    .contact-info {
        order: 2;
    }
    
    .contact-methods {
        gap: var(--spacing-md);
        margin-top: var(--spacing-md);
    }
    
    .contact-method {
        padding: var(--spacing-md);
    }
    
    .contact-method h3 {
        font-size: 1.25rem;
    }
    
    /* Expertise */
    .expertise-split {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .expertise-image-wrapper {
        margin: var(--spacing-md) 0;
    }
    
    .expertise-details {
        margin-top: var(--spacing-md);
    }
    
    .expectation-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        margin-top: var(--spacing-md);
    }
    
    .expectation-item {
        padding: var(--spacing-md);
    }
    
    /* Publications */
    .publications-list {
        gap: var(--spacing-sm);
        margin-top: var(--spacing-md);
    }
    
    .publication-item {
        padding: var(--spacing-md);
    }
    
    .publication-book {
        padding: var(--spacing-md);
    }
    
    .publication-item h3 {
        font-size: 1.1rem;
    }
    
    .publication-meta {
        font-size: 0.9rem;
    }
    
    /* Frameworks Detail Page */
    .framework-detail-section {
        padding: var(--spacing-xl) var(--spacing-sm);
    }
    
    .framework-detail-title {
        font-size: 1.75rem;
    }
    
    .framework-detail-description {
        font-size: 1rem;
        margin-bottom: var(--spacing-lg);
    }
    
    .framework-image-wrapper {
        margin: var(--spacing-lg) 0;
    }
    
    .framework-image-overlay {
        opacity: 0.7;
    }
    
    .framework-image-text {
        font-size: 0.95rem;
    }
    
    .framework-details-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        margin-top: var(--spacing-lg);
    }
    
    .framework-detail-item {
        padding: var(--spacing-md);
    }
    
    .framework-download {
        margin-top: var(--spacing-lg);
    }
    
    .framework-download .btn {
        width: 100%;
    }
    
    .framework-cta-section {
        padding: var(--spacing-xl) var(--spacing-sm);
    }
    
    .framework-cta-buttons {
        flex-direction: row;
        gap: var(--spacing-sm);
    }
    
    .framework-cta-buttons .btn {
        width: auto;
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: 0.9rem;
        max-width: 200px;
    }
}

@media screen and (max-width: 480px) {
    /* Extra small devices - balanced spacing */
    :root {
        --spacing-xs: 0.375rem;
        --spacing-sm: 0.75rem;
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 2.5rem;
        --spacing-3xl: 3rem;
    }
    
    .hero-section {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 2rem;
        line-height: 1.2;
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-subtitle {
        font-size: 0.95rem;
        line-height: 1.5;
        margin-bottom: var(--spacing-md);
    }
    
    /* Balanced line-height on very small screens */
    body {
        line-height: 1.5;
    }
    
    p {
        line-height: 1.5;
    }
    
    h1 {
        font-size: clamp(1.75rem, 7vw, 2.5rem);
        line-height: 1.2;
        margin-bottom: var(--spacing-sm);
    }
    
    h2 {
        font-size: clamp(1.5rem, 6vw, 2.25rem);
        line-height: 1.25;
        margin-bottom: var(--spacing-sm);
    }
    
    h3 {
        font-size: clamp(1.25rem, 5vw, 1.75rem);
        line-height: 1.3;
    }
    
    .hero-subtitle,
    .hero-newsletter-subtitle,
    .section-subtitle,
    .about-description,
    .perspective-description,
    .focus-description,
    .book-description,
    .cta-description,
    .credentials-text,
    .subscribe-note,
    .key-message-title {
        line-height: 1.5;
    }
    
    .key-message-title {
        font-size: clamp(1.75rem, 6.5vw, 2.5rem);
        line-height: 1.3;
    }
    
    .section-title {
        font-size: clamp(1.75rem, 6.5vw, 2.5rem);
    }
    
    .page-hero h1 {
        font-size: clamp(2rem, 7.5vw, 3rem);
    }
    
    .hero-credentials {
        margin-top: var(--spacing-sm);
        padding-top: var(--spacing-sm);
    }
    
    .credentials-text {
        font-size: 0.8rem;
    }
    
    .hero-newsletter {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .hero-newsletter-title {
        font-size: 1.5rem;
        line-height: 1.2;
    }
    
    .hero-newsletter-subtitle {
        font-size: 0.9rem;
    }
    
    .nav-container {
        padding: var(--spacing-sm);
    }
    
    .nav-menu {
        width: 100%;
    }
    
    .about-section {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .about-image img {
        max-width: 140px;
    }
    
    .key-message {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .key-message-title {
        font-size: 1.5rem;
    }
    
    .perspectives-section {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .featured-book-section {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .book-image img {
        max-width: 140px;
    }
    
    .newsletter-section {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .cta-section {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .focus-section {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .page-hero {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .page-hero h1 {
        font-size: 1.75rem;
    }
    
    .content-section {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .subscribe-embed {
        margin-bottom: var(--spacing-sm);
    }
    
    .subscribe-embed iframe {
        width: 100% !important;
        height: 52px !important;
    }
    
    .logo-grid {
        gap: var(--spacing-xs);
    }
    
    .logo-item {
        font-size: 0.7rem;
    }
    
    .footer {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .footer-links {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-xs);
        width: 100%;
    }
    
    .footer-links a {
        width: 100%;
        text-align: center;
        padding: var(--spacing-sm) var(--spacing-md);
        min-height: 44px; /* Accessibility: minimum touch target */
        min-width: auto;
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.95rem;
        min-height: 44px;
    }
    
    .btn-large {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.95rem;
        min-height: 48px;
    }
    
    .framework-cta-buttons .btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.85rem;
        max-width: 160px;
    }
    
    .frameworks-examples-grid {
        gap: var(--spacing-md);
    }
    
    .framework-featured {
        padding: var(--spacing-sm);
        gap: var(--spacing-sm);
    }
    
    .framework-thumbnail {
        max-width: 100%;
        width: 100%;
        max-height: 250px;
        object-fit: contain;
    }
    
    .framework-featured-content {
        gap: var(--spacing-sm);
    }
    
    .framework-featured-cta {
        gap: var(--spacing-xs);
    }
}