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

:root {
    /* Colors - Professional Blue/Teal Palette */
    --primary: #0066cc;
    --primary-dark: #004d99;
    --primary-light: #3385d6;
    --secondary: #00a896;
    --accent: #ff6b35;
    --dark: #1a1a2e;
    --dark-medium: #2d2d44;
    --light: #f8f9fa;
    --white: #ffffff;
    --gray-100: #f5f7fa;
    --gray-200: #e4e7eb;
    --gray-300: #cbd2d9;
    --gray-400: #9aa5b1;
    --gray-500: #7b8794;
    --gray-600: #616e7c;
    --gray-700: #52606d;
    --gray-800: #3e4c59;
    --gray-900: #323f4b;
    
    /* Status Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    /* Typography */
    --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

body {
    font-family: var(--font-body);
    color: var(--dark);
    line-height: 1.6;
    background: var(--white);
    overflow-x: hidden;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Sections */
.section {
    padding: var(--space-3xl) 0;
}

.section.alt-bg {
    background: var(--gray-100);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--space-xl);
    color: var(--dark);
    position: relative;
    padding-bottom: var(--space-md);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 2px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #0066cc 0%, #00a896 100%);
    color: var(--white);
    min-height: 60vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: var(--space-lg);
    opacity: 0.95;
}

.hero-meta {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    font-size: 1rem;
    opacity: 0.9;
}

.meta-divider {
    opacity: 0.5;
}

/* Navigation */
.nav {
    position: sticky;
    top: 0;
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    z-index: 100;
    transition: var(--transition);
}

.nav-links {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    overflow-x: auto;
}

.nav-link {
    color: var(--gray-700);
    text-decoration: none;
    padding: var(--space-xs) var(--space-md);
    border-radius: 6px;
    font-weight: 500;
    white-space: nowrap;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--primary);
    background: var(--gray-100);
}

/* Executive Summary */
.exec-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.exec-card {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
}

.exec-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.exec-card.primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    border-color: var(--primary);
}

.exec-number {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--space-xs);
}

.exec-label {
    font-size: 0.95rem;
    font-weight: 500;
    opacity: 0.9;
}

.exec-card.primary .exec-label {
    opacity: 1;
}

/* Problem Solution */
.problem-solution {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    margin-top: var(--space-xl);
}

.ps-column {
    background: var(--white);
    padding: var(--space-xl);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

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

.ps-list {
    list-style: none;
    padding-left: 0;
}

.ps-list li {
    padding-left: var(--space-lg);
    margin-bottom: var(--space-sm);
    position: relative;
}

.ps-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}

.highlight-box {
    background: var(--gray-100);
    padding: var(--space-md);
    border-radius: 8px;
    margin-top: var(--space-md);
    border-left: 4px solid var(--secondary);
}

/* Teacher Segments */
.research-intro {
    margin-bottom: var(--space-xl);
}

.intro-text {
    font-size: 1.125rem;
    color: var(--gray-700);
    max-width: 800px;
}

.teacher-segments {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.segment-card {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border-top: 4px solid var(--primary);
}

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

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

.segment-count {
    font-size: 0.875rem;
    color: var(--gray-600);
    font-weight: 500;
}

.segment-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--space-xs);
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--gray-600);
    line-height: 1.3;
}

.segment-needs {
    background: var(--gray-100);
    padding: var(--space-md);
    border-radius: 8px;
}

.segment-needs h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--dark);
}

.segment-needs ul {
    list-style: none;
    padding-left: 0;
}

.segment-needs li {
    padding-left: var(--space-md);
    margin-bottom: var(--space-xs);
    position: relative;
    font-size: 0.9rem;
}

.segment-needs li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 700;
}

/* Charts */
.chart-section {
    margin-bottom: var(--space-2xl);
}

.chart-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--dark);
}

.chart-container {
    background: var(--white);
    padding: var(--space-xl);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    margin-bottom: var(--space-md);
}

.chart-insights {
    background: var(--info);
    color: var(--white);
    padding: var(--space-md);
    border-radius: 8px;
}

.insight {
    font-size: 0.95rem;
}

/* Evaluation Framework */
.framework-intro {
    margin-bottom: var(--space-xl);
}

.framework-intro p {
    font-size: 1.125rem;
    color: var(--gray-700);
}

.criteria-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.criteria-card {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: var(--transition);
}

.criteria-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.criteria-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
}

.criteria-card h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--dark);
}

.criteria-card p {
    font-size: 0.9rem;
    color: var(--gray-600);
}

/* Comparison Table */
.comparison-section {
    margin-top: var(--space-2xl);
}

.comparison-title {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.table-wrapper {
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.comparison-table thead {
    background: var(--dark);
    color: var(--white);
}

.comparison-table th {
    padding: var(--space-md);
    text-align: left;
    font-weight: 600;
    font-size: 0.9rem;
}

.comparison-table td {
    padding: var(--space-md);
    border-bottom: 1px solid var(--gray-200);
    font-size: 0.9rem;
}

.comparison-table tbody tr:hover {
    background: var(--gray-100);
}

.recommended-row {
    background: #e6f7ff !important;
    border-left: 4px solid var(--primary);
}

.score {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.875rem;
}

.score.high {
    background: var(--success);
    color: var(--white);
}

.score.medium {
    background: var(--warning);
    color: var(--white);
}

.score.low {
    background: var(--gray-400);
    color: var(--white);
}

/* Recommendation */
.recommendation-box {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    margin-bottom: var(--space-2xl);
}

.rec-header {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    padding: var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.rec-header h3 {
    font-size: 1.75rem;
    font-weight: 700;
}

.rec-badge {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.rec-content {
    padding: var(--space-xl);
}

.phase-card {
    background: var(--gray-100);
    padding: var(--space-xl);
    border-radius: 8px;
    margin-bottom: var(--space-lg);
    border-left: 6px solid var(--primary);
    display: flex;
    gap: var(--space-lg);
}

.phase-card.phase-2 {
    border-left-color: var(--secondary);
}

.phase-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.phase-card.phase-2 .phase-number {
    color: var(--secondary);
}

.phase-details h4 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--dark);
}

.phase-description {
    font-size: 1rem;
    color: var(--gray-700);
    margin-bottom: var(--space-md);
}

.phase-features {
    list-style: none;
    padding-left: 0;
}

.phase-features li {
    padding-left: var(--space-lg);
    margin-bottom: var(--space-sm);
    position: relative;
}

.phase-features li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}

.phase-card.phase-2 .phase-features li::before {
    color: var(--secondary);
}

/* Why Wins */
.why-wins {
    margin-bottom: var(--space-2xl);
}

.why-wins h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-lg);
}

.wins-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.win-card {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    border-top: 3px solid var(--secondary);
}

.win-card h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--dark);
}

.win-card p {
    font-size: 0.95rem;
    color: var(--gray-700);
    line-height: 1.6;
}

/* Tradeoffs */
.tradeoffs-section {
    margin-bottom: var(--space-2xl);
}

.tradeoffs-section h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-lg);
}

.tradeoff-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--space-lg);
}

.tradeoff-item {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.tradeoff-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--gray-200);
}

.tradeoff-title.risk {
    color: var(--danger);
}

.tradeoff-title.opportunity {
    color: var(--success);
}

.tradeoff-item p {
    font-size: 0.95rem;
    margin-bottom: var(--space-sm);
}

.tradeoff-item strong {
    color: var(--dark);
}

.tradeoff-item ul {
    list-style: none;
    padding-left: 0;
}

.tradeoff-item li {
    padding-left: var(--space-md);
    margin-bottom: var(--space-xs);
    position: relative;
    font-size: 0.9rem;
}

.tradeoff-item li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--gray-600);
}

/* Timeline */
.timeline-section h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-lg);
}

.timeline {
    position: relative;
    padding-left: var(--space-xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--primary), var(--secondary));
}

.timeline-item {
    position: relative;
    margin-bottom: var(--space-xl);
}

.timeline-marker {
    position: absolute;
    left: -44px;
    top: 8px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--white);
    border: 4px solid var(--primary);
    z-index: 1;
}

.timeline-marker.launch-marker {
    border-color: var(--accent);
    background: var(--accent);
}

.timeline-content {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.timeline-date {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.timeline-content h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--dark);
}

.timeline-content ul {
    list-style: none;
    padding-left: 0;
    margin-bottom: var(--space-md);
}

.timeline-content li {
    padding-left: var(--space-lg);
    margin-bottom: var(--space-xs);
    position: relative;
    font-size: 0.95rem;
}

.timeline-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 700;
}

.timeline-owner {
    font-size: 0.875rem;
    color: var(--gray-600);
    font-style: italic;
    margin-top: var(--space-sm);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--gray-200);
}

/* Team */
.team-section {
    margin-top: var(--space-2xl);
}

.team-section h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-lg);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.team-card {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    border-left: 4px solid var(--primary);
}

.team-role {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: var(--space-xs);
}

.team-count {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: var(--space-md);
}

.team-focus {
    margin-bottom: var(--space-md);
    font-size: 0.95rem;
}

.team-skills {
    font-size: 0.9rem;
}

.team-skills ul {
    list-style: none;
    padding-left: 0;
    margin-top: var(--space-sm);
}

.team-skills li {
    padding-left: var(--space-md);
    margin-bottom: var(--space-xs);
    position: relative;
}

.team-skills li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}

/* Stakeholders */
.stakeholders-section {
    margin-top: var(--space-2xl);
}

.stakeholders-section h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-lg);
}

.stakeholder-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.stakeholder-card {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.stakeholder-card h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--gray-200);
}

.stakeholder-card ul {
    list-style: none;
    padding-left: 0;
}

.stakeholder-card li {
    margin-bottom: var(--space-sm);
    font-size: 0.95rem;
}

.stakeholder-card strong {
    color: var(--primary);
}

/* Milestones Table */
.milestones-section {
    margin-top: var(--space-2xl);
}

.milestones-section h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-lg);
}

.milestones-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.milestones-table thead {
    background: var(--primary);
    color: var(--white);
}

.milestones-table th {
    padding: var(--space-md);
    text-align: left;
    font-weight: 600;
}

.milestones-table td {
    padding: var(--space-md);
    border-bottom: 1px solid var(--gray-200);
}

.milestones-table tbody tr:hover {
    background: var(--gray-100);
}

/* Risks */
.risk-category {
    margin-bottom: var(--space-2xl);
}

.risk-category h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--dark);
}

.risk-items {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.risk-item {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    border-left: 4px solid var(--gray-400);
}

.risk-item.high-priority {
    border-left-color: var(--danger);
}

.risk-item.medium-priority {
    border-left-color: var(--warning);
}

.risk-item.low-priority {
    border-left-color: var(--info);
}

.risk-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.risk-header h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--dark);
}

.risk-level {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.risk-level.high {
    background: var(--danger);
    color: var(--white);
}

.risk-level.medium {
    background: var(--warning);
    color: var(--white);
}

.risk-level.low {
    background: var(--info);
    color: var(--white);
}

.risk-item p {
    margin-bottom: var(--space-sm);
    font-size: 0.95rem;
}

.risk-item ul {
    list-style: none;
    padding-left: 0;
    margin-top: var(--space-sm);
}

.risk-item li {
    padding-left: var(--space-lg);
    margin-bottom: var(--space-xs);
    position: relative;
    font-size: 0.9rem;
}

.risk-item li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 700;
}

/* Success Factors */
.success-factors {
    margin-top: var(--space-2xl);
}

.success-factors h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-lg);
}

.success-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.success-card {
    background: linear-gradient(135deg, var(--success), #059669);
    color: var(--white);
    padding: var(--space-lg);
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.success-number {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: var(--space-sm);
    opacity: 0.9;
}

.success-card h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.success-card p {
    font-size: 0.95rem;
    opacity: 0.95;
}

/* Financial Impact */
.financial-impact {
    margin-top: var(--space-2xl);
    background: var(--gray-100);
    padding: var(--space-xl);
    border-radius: 12px;
}

.financial-impact h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-lg);
}

.financial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.financial-card {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.financial-card h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--primary);
}

.financial-calc {
    background: var(--gray-100);
    padding: var(--space-md);
    border-radius: 8px;
    margin-bottom: var(--space-md);
}

.calc-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-xs);
    font-size: 0.95rem;
}

.calc-result {
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 2px solid var(--gray-300);
    text-align: center;
    font-size: 1.25rem;
    color: var(--success);
}

.financial-note {
    font-size: 0.875rem;
    color: var(--gray-600);
    font-style: italic;
}

.cost-breakdown {
    list-style: none;
    padding-left: 0;
}

.cost-breakdown li {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
}

.cost-breakdown li:last-child {
    border-bottom: 2px solid var(--primary);
    font-weight: 700;
    color: var(--primary);
}

/* Conclusion */
.conclusion {
    background: linear-gradient(135deg, var(--dark), var(--dark-medium));
    color: var(--white);
}

.conclusion-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.conclusion h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--space-lg);
}

.conclusion-text {
    font-size: 1.25rem;
    margin-bottom: var(--space-xl);
    opacity: 0.95;
}

.next-steps {
    background: rgba(255, 255, 255, 0.1);
    padding: var(--space-xl);
    border-radius: 12px;
    margin-bottom: var(--space-xl);
    text-align: left;
}

.next-steps h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    text-align: center;
}

.next-steps-list {
    list-style: none;
    padding-left: 0;
    counter-reset: step-counter;
}

.next-steps-list li {
    padding-left: var(--space-xl);
    margin-bottom: var(--space-md);
    position: relative;
    font-size: 1.05rem;
    counter-increment: step-counter;
}

.next-steps-list li::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    width: 32px;
    height: 32px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
}

.conclusion-cta {
    background: var(--primary);
    padding: var(--space-lg);
    border-radius: 8px;
    font-size: 1.125rem;
}

/* Footer */
.footer {
    background: var(--dark);
    color: var(--gray-400);
    padding: var(--space-lg) 0;
    text-align: center;
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 968px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .problem-solution {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        flex-wrap: nowrap;
        justify-content: flex-start;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .tradeoff-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-meta {
        flex-direction: column;
        gap: var(--space-xs);
    }
    
    .meta-divider {
        display: none;
    }
    
    .phase-card {
        flex-direction: column;
    }
    
    .timeline {
        padding-left: var(--space-lg);
    }
    
    .timeline::before {
        left: 8px;
    }
    
    .timeline-marker {
        left: -36px;
        width: 20px;
        height: 20px;
    }
}

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

.section > * {
    animation: fadeInUp 0.6s ease-out;
}