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

:root {
    /* Primary - Government Navy */
    --color-primary: hsl(210, 50%, 35%);
    --color-primary-dark: hsl(210, 55%, 25%);
    --color-primary-light: hsl(210, 45%, 50%);

    /* Secondary - Neutral grays only */
    --color-secondary: hsl(210, 15%, 40%);
    --color-accent: hsl(210, 20%, 50%);

    /* Status colors - muted government palette */
    --color-success: hsl(140, 40%, 40%);
    --color-warning: hsl(35, 50%, 50%);
    --color-danger: hsl(0, 50%, 45%);

    /* Neutrals */
    --color-dark: hsl(210, 20%, 15%);
    --color-dark-light: hsl(210, 18%, 20%);
    --color-gray-900: hsl(220, 15%, 25%);
    --color-gray-800: hsl(220, 12%, 35%);
    --color-gray-700: hsl(220, 10%, 45%);
    --color-gray-600: hsl(220, 8%, 55%);
    --color-gray-500: hsl(220, 6%, 65%);
    --color-gray-400: hsl(220, 5%, 75%);
    --color-gray-300: hsl(220, 4%, 85%);
    --color-gray-200: hsl(220, 3%, 92%);
    --color-gray-100: hsl(220, 2%, 97%);
    --color-white: hsl(0, 0%, 100%);

    /* 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-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: Georgia, 'Times New Roman', serif;

    /* 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);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Transitions */
    --transition-fast: 100ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-gray-800);
    background: var(--color-white);
    overflow-x: hidden;
}

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

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: hsl(210, 20%, 15%);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: box-shadow 0.2s ease;
}

.nav-login-btn {
    background: var(--color-primary) !important;
    color: var(--color-white) !important;
    padding: 0.5rem 1.25rem !important;
    border-radius: 4px !important;
    font-weight: 600 !important;
    transition: background-color 0.2s ease !important;
}

.nav-login-btn:hover {
    background: var(--color-primary-dark) !important;
}

.nav-login-btn::after {
    display: none !important;
}

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

.nav-logo {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-md);
    text-decoration: none;
}

.nav-logo-img {
    height: 50px;
    width: auto;
    transition: var(--transition-base);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.nav-logo:hover .nav-logo-img {
    transform: scale(1.05);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.15));
}

.nav-logo-text {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.2;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--color-gray-300);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav-menu a {
    color: var(--color-gray-200);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: var(--transition-fast);
}

.nav-menu a:hover {
    color: var(--color-secondary);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-secondary);
    transition: var(--transition-base);
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-white);
    transition: var(--transition-base);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: calc(80px + var(--spacing-3xl)) var(--spacing-lg) var(--spacing-3xl);
    background: linear-gradient(180deg, hsl(210, 50%, 96%) 0%, hsl(0, 0%, 100%) 100%);
}

.hero-background {
    display: none;
}

/* Removed gradientShift animation - not needed for government site */

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 900px;
    text-align: center;
    animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.hero-quote {
    margin-bottom: var(--spacing-2xl);
}

.plato-quote {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md) var(--spacing-lg);
    border-left: 4px solid var(--color-primary);
    background: rgba(59, 130, 246, 0.05);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.plato-quote p {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    font-style: italic;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-xs);
    line-height: 1.5;
}

.plato-quote cite {
    font-family: var(--font-body);
    font-size: 1rem;
    font-style: normal;
    font-weight: 600;
    color: var(--color-primary);
}

.quote-icon {
    width: 48px;
    height: 48px;
    color: var(--color-primary);
    opacity: 0.3;
    margin-bottom: var(--spacing-sm);
}

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

.hero-title-main {
    font-family: var(--font-body);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    color: var(--color-dark);
    line-height: 1.3;
    font-style: normal;
}

.hero-title-author {
    font-family: var(--font-body);
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 400;
    color: var(--color-gray-600);
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-2xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    /* Removed bounce animation for professional aesthetic */
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--color-gray-400);
    border-radius: 20px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 10px;
    background: var(--color-gray-400);
    border-radius: 2px;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% {
        opacity: 1;
        top: 10px;
    }

    100% {
        opacity: 0;
        top: 25px;
    }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 4px;
    transition: var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
    position: relative;
}

.btn::before {
    display: none;
}

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

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

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

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

/* ============================================
   SECTIONS
   ============================================ */
.section {
    padding: var(--spacing-3xl) 0;
}

.section-light {
    background: hsl(0, 0%, 98%);
}

.section-dark {
    background: hsl(210, 20%, 20%);
    color: var(--color-gray-100);
}

.section-accent {
    background: hsl(210, 50%, 97%);
}

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

.section-label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.section-dark .section-label {
    color: var(--color-secondary);
}

.section-title {
    font-family: var(--font-body);
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

.section-dark .section-title {
    color: var(--color-white);
}

.section-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-gray-600);
}

.section-dark .section-subtitle {
    color: var(--color-gray-400);
}

/* ============================================
   CONTENT CARDS
   ============================================ */
.content-card {
    background: var(--color-white);
    border-radius: 6px;
    padding: var(--spacing-xl);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
    transition: box-shadow 0.2s ease;
    border: 1px solid var(--color-gray-200);
    border-left: 4px solid var(--color-primary);
}

.content-card:hover {
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    border-left-color: var(--color-primary-dark);
}

.lead-text {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

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

.column p {
    color: var(--color-gray-700);
}

/* ============================================
   CALLOUTS
   ============================================ */
.callout {
    padding: var(--spacing-lg);
    border-radius: 4px;
    border-left: 4px solid;
    margin-top: var(--spacing-xl);
    border: 1px solid;
}

.callout-primary {
    background: hsl(210, 50%, 96%);
    border-color: var(--color-primary);
    border-left-color: var(--color-primary);
}

.callout-warning {
    background: hsl(35, 50%, 96%);
    border-color: hsl(35, 50%, 70%);
    border-left-color: var(--color-warning);
}

.highlight-text {
    font-size: 1.25rem;
    font-weight: 600;
    text-align: center;
    color: var(--color-dark);
    line-height: 1.6;
}

/* ============================================
   BENEFITS GRID
   ============================================ */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.benefit-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    padding: var(--spacing-xl);
    transition: var(--transition-base);
    position: relative;
    border-top: 3px solid var(--color-primary);
}

.benefit-card::before {
    display: none;
}

.benefit-card:hover {
    background: rgba(255, 255, 255, 0.1);
    border-top-color: var(--color-primary-light);
}

.benefit-icon {
    width: 60px;
    height: 60px;
    background: var(--color-primary);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.benefit-icon svg {
    width: 30px;
    height: 30px;
    color: var(--color-white);
}

.benefit-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.benefit-card p {
    color: var(--color-gray-300);
}

/* ============================================
   TABS
   ============================================ */
.tabs {
    margin-top: var(--spacing-2xl);
}

.tab-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--color-gray-200);
    justify-content: center;
    flex-wrap: wrap;
}

.tab-button {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 600;
    background: none;
    border: none;
    color: var(--color-gray-600);
    cursor: pointer;
    position: relative;
    transition: var(--transition-base);
}

.tab-button::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition-base);
}

.tab-button.active {
    color: var(--color-primary);
}

.tab-button.active::after {
    width: 100%;
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease-in;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.parameter-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
}

.parameter-card {
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: 6px;
    padding: var(--spacing-xl);
}

.parameter-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

.parameter-card p {
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-md);
}

.parameter-detail {
    background: var(--color-gray-100);
    padding: var(--spacing-md);
    border-radius: 4px;
    margin-top: var(--spacing-md);
    border: 1px solid var(--color-gray-300);
}

.parameter-detail strong {
    color: var(--color-primary);
}

/* ============================================
   MOTIVATION GRID
   ============================================ */
.motivation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.motivation-card {
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: 6px;
    padding: var(--spacing-xl);
    position: relative;
    transition: border-color 0.2s ease;
}

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

.motivation-number {
    position: absolute;
    top: -20px;
    left: var(--spacing-lg);
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.motivation-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.motivation-card p {
    color: var(--color-gray-700);
}

/* ============================================
   BUILDING SHOWCASE
   ============================================ */
.building-image {
    margin-bottom: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.building-photo {
    width: 100%;
    height: auto;
    display: block;
    max-height: 500px;
    object-fit: cover;
}

.building-showcase {
    margin-bottom: var(--spacing-3xl);
}

.building-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.building-stat {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-white);
    border-radius: 4px;
    box-shadow: none;
    border: 2px solid var(--color-gray-300);
    border-top: 4px solid var(--color-primary);
    transition: border-color 0.2s ease;
}

.building-stat:hover {
    border-top-color: var(--color-primary-dark);
}

.stat-value {
    font-family: var(--font-body);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: var(--spacing-sm);
}

.building-description {
    background: var(--color-white);
    border-radius: 6px;
    padding: var(--spacing-xl);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
    border: 1px solid var(--color-gray-200);
}

.building-description p {
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-md);
}

.building-description p:last-child {
    margin-bottom: 0;
}

.challenge-section,
.economic-perspective {
    margin-top: var(--spacing-3xl);
}

.challenge-section h3,
.economic-perspective h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-lg);
}

.challenge-explanation {
    background: var(--color-white);
    border-radius: 6px;
    padding: var(--spacing-xl);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
    border: 1px solid var(--color-gray-200);
}

.challenge-explanation p {
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-lg);
}

/* ============================================
   DEFINITION CARDS
   ============================================ */
.definition-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.definition-card {
    background: var(--color-white);
    border-left: 4px solid var(--color-primary);
    border-radius: 6px;
    padding: var(--spacing-xl);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
    border: 1px solid var(--color-gray-200);
    border-left: 4px solid var(--color-primary);
}

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

.definition-meaning {
    color: var(--color-gray-700);
    line-height: 1.6;
}

.impact-statement {
    background: var(--color-white);
    border-radius: 6px;
    padding: var(--spacing-xl);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
    border: 1px solid var(--color-gray-200);
    font-size: 1.125rem;
    color: var(--color-gray-700);
    line-height: 1.7;
}

/* ============================================
   OPTIONS COMPARISON
   ============================================ */
.options-comparison {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
}

.option-card {
    background: var(--color-white);
    border-radius: 8px;
    padding: var(--spacing-xl);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.option-card:hover {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.option-teardown {
    border: 3px solid var(--color-gray-300);
}

.option-rebuild {
    border: 3px solid var(--color-primary);
}

.option-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--color-gray-200);
}

.option-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
}

.option-cost {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
}

.option-card p {
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-lg);
}

.option-impact {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
}

.option-impact.negative {
    background: hsl(0, 75%, 95%);
    border-left: 4px solid var(--color-danger);
}

.option-impact.positive {
    background: hsl(140, 70%, 95%);
    border-left: 4px solid var(--color-success);
}

/* ============================================
   ANALYSIS GRID
   ============================================ */
.motivation-analysis {
    margin: var(--spacing-3xl) 0;
}

.motivation-analysis h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.analysis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.analysis-card {
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: 6px;
    padding: var(--spacing-xl);
    text-align: center;
    position: relative;
}

.analysis-verdict {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-md);
}

.analysis-verdict.negative {
    background: hsl(0, 75%, 95%);
    color: var(--color-danger);
}

.analysis-card h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.analysis-card p {
    color: var(--color-gray-700);
    font-size: 0.95rem;
}

.conclusion-card {
    background: var(--color-primary);
    border-radius: 8px;
    padding: var(--spacing-2xl);
    text-align: center;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.conclusion-card h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.conclusion-text {
    font-size: 1.25rem;
    color: var(--color-white);
    line-height: 1.6;
}

/* ============================================
   REBUILD BENEFITS
   ============================================ */
.rebuild-benefits {
    margin-top: var(--spacing-3xl);
}

.rebuild-benefits h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.benefits-list {
    display: grid;
    gap: var(--spacing-lg);
}

.benefit-item {
    display: flex;
    gap: var(--spacing-md);
    background: var(--color-white);
    border-radius: 6px;
    padding: var(--spacing-lg);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
    border: 1px solid var(--color-gray-200);
    transition: box-shadow 0.2s ease;
}

.benefit-item:hover {
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.benefit-icon-small {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: var(--color-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.benefit-icon-small svg {
    width: 20px;
    height: 20px;
    color: var(--color-white);
    stroke-width: 3;
}

.benefit-content h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
}

.benefit-content p {
    color: var(--color-gray-700);
    font-size: 0.95rem;
}

/* ============================================
   STRATEGY STEPS
   ============================================ */
.strategy-steps {
    display: grid;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.step-card {
    display: flex;
    gap: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: var(--spacing-xl);
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.step-card:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-secondary);
}

.step-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-body);
    font-size: 2rem;
    font-weight: 700;
}

.step-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.step-content p {
    color: var(--color-gray-300);
    margin-bottom: var(--spacing-md);
}

.step-detail {
    background: rgba(0, 0, 0, 0.2);
    padding: var(--spacing-md);
    border-radius: 4px;
    color: var(--color-gray-400);
    font-size: 0.95rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ============================================
   CALL TO ACTION
   ============================================ */
.call-to-action-section {
    background: var(--color-primary);
    border-radius: 8px;
    padding: var(--spacing-3xl);
    text-align: center;
    border-top: 4px solid var(--color-primary-dark);
}

.call-to-action-section h3 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.cta-description {
    font-size: 1.25rem;
    color: var(--color-white);
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
    line-height: 1.6;
}

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

.cta-buttons .btn-primary {
    background: var(--color-white);
    color: var(--color-primary);
}

.cta-buttons .btn-primary:hover {
    background: var(--color-gray-100);
}

.cta-buttons .btn-secondary {
    background: transparent;
    border-color: var(--color-white);
    color: var(--color-white);
}

.cta-buttons .btn-secondary:hover {
    background: var(--color-white);
    color: var(--color-primary);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: hsl(210, 20%, 15%);
    color: var(--color-gray-300);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    border-top: 4px solid var(--color-primary);
}

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

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    line-height: 1.8;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer-logo {
    height: 50px;
    width: auto;
    margin-bottom: var(--spacing-md);
    filter: brightness(0) invert(1);
    opacity: 0.8;
    transition: opacity 0.2s ease;
}

.footer-logo:hover {
    opacity: 1;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: var(--color-gray-500);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: auto;
        max-height: calc(100vh - 80px);
        flex-direction: column;
        background: hsl(210, 20%, 15%);
        padding: var(--spacing-xl);
        box-shadow: var(--shadow-xl);
        transition: left var(--transition-base);
        gap: var(--spacing-md);
        z-index: 999;
        overflow-y: auto;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu a {
        color: var(--color-gray-200);
        font-size: 1.1rem;
        padding: var(--spacing-sm) 0;
        display: block;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-menu a:hover {
        color: var(--color-white);
    }

    .nav-menu li:last-child a {
        border-bottom: none;
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .hero {
        min-height: 100vh;
        padding: calc(80px + var(--spacing-3xl)) var(--spacing-md) var(--spacing-2xl);
    }

    .hero-title-main {
        font-size: clamp(1.5rem, 6vw, 2rem);
        line-height: 1.4;
    }

    .hero-title-author {
        font-size: 0.9rem;
    }

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

    .hero-quote {
        margin-bottom: var(--spacing-xl);
    }

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

    .btn {
        width: 100%;
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .nav-logo-img {
        height: 40px;
    }

    .logo-text {
        font-size: 1.25rem;
    }

    .logo-subtitle {
        font-size: 0.65rem;
    }

    .parameter-cards,
    .options-comparison {
        grid-template-columns: 1fr;
    }

    .step-card {
        flex-direction: column;
    }

    .tab-buttons {
        justify-content: flex-start;
        overflow-x: auto;
    }
}

@media (max-width: 480px) {
    .building-stat-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-value {
        font-size: 2rem;
    }
}