/* ========================================
   Wind Energy - Clean Technology
   Professional Webpage Styles
   ======================================== */

/* CSS Custom Properties */
:root {
    --bg-primary: #0a0f1a;
    --bg-secondary: #0f1629;
    --bg-tertiary: #141c33;
    --bg-card: #1a2340;
    --bg-card-hover: #1f2b4d;

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --accent: #22c55e;
    --accent-light: #4ade80;
    --accent-dark: #16a34a;
    --accent-glow: rgba(34, 197, 94, 0.15);
    --accent-glow-strong: rgba(34, 197, 94, 0.3);

    --blue: #3b82f6;
    --cyan: #06b6d4;
    --purple: #a78bfa;

    --border: rgba(148, 163, 184, 0.1);
    --border-light: rgba(148, 163, 184, 0.06);

    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px var(--accent-glow);

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

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

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 15, 26, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 10px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.logo-icon {
    width: 36px;
    height: 36px;
    color: var(--accent);
}

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

.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
    border-radius: 1px;
}

.nav-links a:hover {
    color: var(--text-primary);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 120px 0 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-particles {
    position: absolute;
    inset: 0;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 20% 50%, rgba(34, 197, 94, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse 60% 80% at 80% 20%, rgba(59, 130, 246, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse 50% 50% at 50% 100%, rgba(10, 15, 26, 0.9) 0%, transparent 60%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--accent-glow);
    border: 1px solid rgba(34, 197, 94, 0.2);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent-light);
    margin-bottom: 24px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3.5rem, 8vw, 7rem);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.title-line {
    display: block;
}

.title-line.accent {
    background: linear-gradient(135deg, var(--accent-light), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 580px;
    line-height: 1.8;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hero-stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: var(--accent);
    color: var(--bg-primary);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
    box-shadow: 0 0 30px rgba(34, 197, 94, 0.2);
}

.hero-cta:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 0 50px rgba(34, 197, 94, 0.3);
}

.hero-cta svg {
    transition: var(--transition);
}

.hero-cta:hover svg {
    transform: translateY(3px);
}

.hero-turbine {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    width: 400px;
    height: 500px;
    z-index: 1;
    opacity: 0.15;
    pointer-events: none;
}

.turbine-svg {
    width: 100%;
    height: 100%;
}

.turbine-blades {
    animation: rotateBlade 8s linear infinite;
}

@keyframes rotateBlade {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ========================================
   Section Common Styles
   ======================================== */
.section {
    padding: 120px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 14px;
    background: var(--accent-glow);
    border: 1px solid rgba(34, 197, 94, 0.15);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 20px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.highlight {
    background: linear-gradient(135deg, var(--accent-light), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.subsection-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 32px;
    text-align: center;
    letter-spacing: -0.02em;
}

/* ========================================
   Overview Section
   ======================================== */
.overview {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.overview-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.overview-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--cyan));
    opacity: 0;
    transition: var(--transition);
}

.overview-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(34, 197, 94, 0.15);
}

.overview-card:hover::before {
    opacity: 1;
}

.card-icon {
    width: 48px;
    height: 48px;
    color: var(--accent);
    margin-bottom: 20px;
}

.card-icon svg {
    width: 100%;
    height: 100%;
}

.overview-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.overview-card p {
    font-size: 0.925rem;
    color: var(--text-secondary);
    line-height: 1.75;
}

/* ========================================
   Technology Section
   ======================================== */
.technology {
    background: var(--bg-secondary);
}

.tech-types {
    display: flex;
    flex-direction: column;
    gap: 64px;
    margin-bottom: 80px;
}

.tech-type-card {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 48px;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 48px;
    transition: var(--transition);
}

.tech-type-card:hover {
    border-color: rgba(34, 197, 94, 0.15);
    box-shadow: var(--shadow-md);
}

.tech-type-card.reverse {
    grid-template-columns: 1.5fr 1fr;
}

.tech-type-card.reverse .tech-type-visual {
    order: 2;
}

.tech-type-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-icon-large {
    width: 160px;
    height: 160px;
    color: var(--accent);
    opacity: 0.8;
}

.tech-icon-large svg {
    width: 100%;
    height: 100%;
}

.tech-type-content h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.tech-type-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 24px;
}

.tech-specs {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.tech-specs li {
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding: 8px 0;
    border-bottom: 1px solid var(--border-light);
}

.tech-specs li:last-child {
    border-bottom: none;
}

.tech-specs li strong {
    color: var(--text-primary);
    font-weight: 600;
    margin-right: 8px;
}

/* Components Grid */
.components-section {
    margin-top: 80px;
}

.components-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.component-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 32px;
    transition: var(--transition);
    position: relative;
}

.component-card:hover {
    transform: translateY(-3px);
    border-color: rgba(34, 197, 94, 0.15);
    box-shadow: var(--shadow-sm);
}

.component-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--accent);
    opacity: 0.15;
    line-height: 1;
    margin-bottom: 12px;
}

.component-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.component-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========================================
   Benefits Section
   ======================================== */
.benefits {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.benefit-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: var(--transition);
}

.benefit-card:hover {
    transform: translateY(-4px);
    border-color: rgba(34, 197, 94, 0.15);
    box-shadow: var(--shadow-md);
}

.benefit-card.featured {
    grid-column: span 3;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 32px;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(34, 197, 94, 0.05) 100%);
    border-color: rgba(34, 197, 94, 0.15);
}

.benefit-icon {
    width: 56px;
    height: 56px;
    color: var(--accent);
    margin-bottom: 20px;
    flex-shrink: 0;
}

.benefit-card.featured .benefit-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 0;
}

.benefit-icon svg {
    width: 100%;
    height: 100%;
}

.benefit-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}

.benefit-card.featured h3 {
    font-size: 1.35rem;
}

.benefit-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.75;
}

/* ========================================
   Global Impact Section
   ======================================== */
.global-impact {
    background: var(--bg-primary);
}

.leaders-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 48px;
}

.leader-card {
    display: flex;
    align-items: center;
    gap: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    transition: var(--transition);
}

.leader-card:hover {
    border-color: rgba(34, 197, 94, 0.15);
    background: var(--bg-card-hover);
}

.leader-rank {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent);
    opacity: 0.5;
    min-width: 32px;
    text-align: center;
}

.leader-info {
    flex: 1;
}

.leader-info h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.leader-bar {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 6px;
}

.bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--cyan));
    border-radius: 3px;
    width: 0;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.leader-capacity {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.impact-callout {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(34, 197, 94, 0.05) 100%);
    border: 1px solid rgba(34, 197, 94, 0.15);
    border-radius: var(--radius-xl);
    padding: 48px;
}

.callout-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.callout-content p {
    font-size: 0.925rem;
    color: var(--text-secondary);
    line-height: 1.75;
    max-width: 600px;
}

.callout-stat {
    text-align: center;
    flex-shrink: 0;
}

.callout-number {
    display: block;
    font-size: 4rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent-light), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.callout-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 8px;
    font-weight: 500;
}

/* ========================================
   Economics Section
   ======================================== */
.economics {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.economics-highlight {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 64px;
}

.econ-stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
    text-align: center;
    transition: var(--transition);
}

.econ-stat-card:hover {
    transform: translateY(-3px);
    border-color: rgba(34, 197, 94, 0.15);
    box-shadow: var(--shadow-md);
}

.econ-icon {
    width: 48px;
    height: 48px;
    color: var(--accent);
    margin: 0 auto 16px;
}

.econ-icon svg {
    width: 100%;
    height: 100%;
}

.econ-value {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.03em;
    margin-bottom: 8px;
}

.econ-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    line-height: 1.4;
}

/* Cost Comparison */
.cost-comparison {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 48px;
}

.comparison-bars {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 24px;
}

.comp-bar-row {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 16px;
    align-items: center;
}

.comp-label {
    font-size: 0.875rem;
    font-weight: 600;
    text-align: right;
    color: var(--text-secondary);
}

.comp-bar-track {
    height: 32px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    overflow: hidden;
    position: relative;
}

.comp-bar-fill {
    height: 100%;
    background: var(--bar-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    padding: 0 12px;
    width: 0;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.comp-value {
    font-size: 0.75rem;
    font-weight: 700;
    color: white;
    white-space: nowrap;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.comparison-note {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-style: italic;
    line-height: 1.6;
}

/* ========================================
   Challenges Section
   ======================================== */
.challenges {
    background: var(--bg-secondary);
}

.challenges-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.challenge-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: var(--transition);
}

.challenge-card:hover {
    border-color: rgba(34, 197, 94, 0.1);
    box-shadow: var(--shadow-sm);
}

.challenge-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 14px;
}

.challenge-icon {
    width: 32px;
    height: 32px;
    color: var(--accent);
    flex-shrink: 0;
}

.challenge-icon svg {
    width: 100%;
    height: 100%;
}

.challenge-header h4 {
    font-size: 1.15rem;
    font-weight: 700;
}

.challenge-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.solution {
    background: rgba(34, 197, 94, 0.05);
    border: 1px solid rgba(34, 197, 94, 0.1);
    border-radius: var(--radius-sm);
    padding: 16px;
}

.solution-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: 8px;
}

.solution p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========================================
   Future Section
   ======================================== */
.future {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.timeline {
    position: relative;
    max-width: 700px;
    margin: 0 auto 80px;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--accent), var(--cyan), var(--purple));
    border-radius: 1px;
}

.timeline-item {
    position: relative;
    padding-bottom: 48px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -36px;
    top: 4px;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    border: 3px solid var(--bg-secondary);
    box-shadow: 0 0 20px var(--accent-glow);
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 28px;
}

.timeline-year {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
    margin-bottom: 8px;
}

.timeline-content h4 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.timeline-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.75;
}

/* Innovations */
.innovations-grid {
    margin-top: 48px;
}

.innovation-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.innovation-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.innovation-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--cyan));
    opacity: 0;
    transition: var(--transition);
}

.innovation-card:hover {
    transform: translateY(-3px);
    border-color: rgba(34, 197, 94, 0.15);
    box-shadow: var(--shadow-sm);
}

.innovation-card:hover::before {
    opacity: 1;
}

.innovation-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.innovation-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.75;
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
    background: var(--bg-primary);
    padding: 100px 0;
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-content p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 36px;
}

.cta-links {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-link {
    display: inline-flex;
    align-items: center;
    padding: 12px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: var(--transition);
}

.cta-link:hover {
    border-color: var(--accent);
    background: var(--accent-glow);
    color: var(--accent-light);
    transform: translateY(-2px);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 48px 0;
}

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

.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.footer-logo {
    width: 32px;
    height: 32px;
    color: var(--accent);
}

.footer-text {
    font-size: 0.85rem;
    color: var(--text-muted);
    max-width: 500px;
    margin: 0 auto 12px;
    line-height: 1.6;
}

.footer-copyright {
    font-size: 0.75rem;
    color: var(--text-muted);
    opacity: 0.6;
}

/* ========================================
   Animations & Scroll
   ======================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .hero-turbine {
        display: none;
    }

    .tech-type-card,
    .tech-type-card.reverse {
        grid-template-columns: 1fr;
    }

    .tech-type-card.reverse .tech-type-visual {
        order: 0;
    }

    .components-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 15, 26, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
    }

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

    .nav-toggle {
        display: flex;
    }

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

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

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

    .section {
        padding: 80px 0;
    }

    .overview-grid,
    .benefits-grid,
    .challenges-grid,
    .innovation-cards,
    .leaders-grid {
        grid-template-columns: 1fr;
    }

    .benefit-card.featured {
        grid-column: span 1;
        grid-template-columns: 1fr;
        text-align: center;
    }

    .benefit-card.featured .benefit-icon {
        margin: 0 auto 16px;
    }

    .economics-highlight {
        grid-template-columns: 1fr;
    }

    .hero-stats {
        gap: 24px;
    }

    .hero-stat {
        min-width: calc(50% - 12px);
    }

    .comp-bar-row {
        grid-template-columns: 100px 1fr;
        gap: 8px;
    }

    .impact-callout {
        flex-direction: column;
        text-align: center;
    }

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

    .tech-type-card {
        padding: 32px;
    }

    .timeline {
        padding-left: 32px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.75rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .hero-stat {
        min-width: 100%;
    }

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

    .comp-bar-row {
        grid-template-columns: 1fr;
    }

    .comp-label {
        text-align: left;
    }

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

/* ========================================
   Particles
   ======================================== */
.particle {
    position: absolute;
    border-radius: 50%;
    background: var(--accent);
    pointer-events: none;
    opacity: 0;
    animation: floatParticle linear infinite;
}

@keyframes floatParticle {
    0% {
        opacity: 0;
        transform: translateY(0) scale(0);
    }
    10% {
        opacity: 0.6;
        transform: scale(1);
    }
    90% {
        opacity: 0.3;
    }
    100% {
        opacity: 0;
        transform: translateY(-100vh) scale(0.5);
    }
}