:root {
    /* Logo / Brand Colors */
    --brand-navy: #041B3B;
    --brand-blue: #0066CC;
    --brand-blue-light: #E6F0FA;
    --brand-orange: #F35B04;
    --brand-orange-light: #FEF0E9;
    
    /* Grayscale */
    --bg-white: #FFFFFF;
    --bg-light: #F8FAFC;
    --text-main: #1E293B;
    --text-muted: #64748B;
    --border-color: #E2E8F0;
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-white);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--brand-navy);
    line-height: 1.2;
}

p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* UTILITIES */
.bg-light { background-color: var(--bg-light); }
.bg-dark { background-color: var(--brand-navy); }
.text-white h2, .text-white h3, .text-white h4, .text-white p { color: white; }
.text-white p { opacity: 0.8; }
.orange-text { color: var(--brand-orange) !important; font-weight: 700; }
.highlight-blue { color: var(--brand-blue); }

.eyebrow {
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--brand-blue);
    margin-bottom: 0.5rem;
}

.section-header.center {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header.light-theme h2 { color: white; }

/* NAVIGATION */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

nav.scrolled {
    padding: 0.8rem 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 120px;
    object-fit: contain;
    transition: height 0.3s ease;
}

nav.scrolled .logo img {
    height: 80px;
}

.logo-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--brand-navy);
    letter-spacing: 1px;
}

.logo-accent { color: var(--brand-orange); }

.nav-links {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--brand-blue);
}

/* BUTTONS */
.btn-primary, .btn-secondary, .btn-primary-outline {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    font-family: var(--font-body);
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background-color: #d94e03;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(243, 91, 4, 0.3);
}

.btn-secondary {
    background-color: var(--brand-navy);
    color: white;
}

.btn-secondary:hover {
    background-color: #021229;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(4, 27, 59, 0.3);
}

.btn-primary-outline {
    border: 2px solid var(--brand-blue);
    color: var(--brand-blue) !important;
    padding: 0.5rem 1.25rem;
}

.btn-primary-outline:hover {
    background-color: var(--brand-blue);
    color: white !important;
}

.full-width { width: 100%; }

.small-text {
    font-size: 0.75rem;
    display: block;
    font-weight: 400;
    opacity: 0.9;
}

/* HERO SECTION */
.hero-section {
    padding: 10rem 0 6rem;
    background: linear-gradient(135deg, var(--bg-white) 0%, var(--bg-light) 100%);
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero-container {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.hero-content { flex: 1; }
.hero-image { flex: 1; position: relative; }

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.hero-content .sub-headline {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 90%;
}

.cta-group {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.hero-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 2;
}

.image-accent-box {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100%;
    height: 100%;
    border: 3px solid var(--brand-blue);
    border-radius: 8px;
    z-index: 1;
}

/* MACRO DISRUPTION */
section { padding: 6rem 0; }

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.card {
    padding: 3rem;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.dark-card {
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
}

.brand-card {
    background-color: var(--brand-navy);
}

.brand-card h3, .brand-card p { color: white; }
.brand-card p { opacity: 0.8; }

.card-header { display: flex; align-items: center; gap: 1rem; }
.step-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--brand-blue);
}
.step-number.light { color: var(--brand-orange); }

/* ECONOMIC IMPACT */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 700;
    color: var(--brand-blue);
    margin-bottom: 0.5rem;
    line-height: 1;
}

.stat-item h4 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

/* PATHWAYS */
.pathway-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.pathway-card {
    background: var(--bg-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.card-top {
    padding: 1rem 2rem;
    font-family: var(--font-heading);
    font-weight: 700;
    color: white;
}
.orange-top { background-color: var(--brand-orange); }
.blue-top { background-color: var(--brand-blue); }

.card-content { padding: 3rem 2rem; }
.card-content h3 { font-size: 1.5rem; margin-bottom: 1.5rem; }

.feature-list { list-style: none; }
.feature-list li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-muted);
}
.feature-list li::before {
    content: "•";
    color: var(--brand-blue);
    font-weight: bold;
    position: absolute;
    left: 0;
    font-size: 1.2rem;
}
.feature-list strong { color: var(--text-main); }

/* FEEDSTOCK */
.feedstock-container {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.feedstock-content { flex: 1; }
.feedstock-image { flex: 1; position: relative; }
.feedstock-image img { width: 100%; border-radius: 8px; position: relative; z-index: 2; }
.image-accent-border {
    position: absolute;
    bottom: -20px;
    left: -20px;
    width: 100%;
    height: 100%;
    background-color: var(--brand-orange-light);
    border-radius: 8px;
    z-index: 1;
}

.large-p { font-size: 1.25rem; margin-bottom: 3rem; color: var(--text-main); }

.feedstock-list { display: flex; flex-direction: column; gap: 2rem; }
.feedstock-item { display: flex; gap: 1.5rem; align-items: flex-start; }
.icon-box {
    width: 60px;
    height: 60px;
    background: var(--brand-blue-light);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    flex-shrink: 0;
}
.feedstock-item h4 { margin-bottom: 0.5rem; font-size: 1.2rem; }

/* SCALING */
.automation-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.brain-panel {
    background: rgba(255, 255, 255, 0.05);
    padding: 3rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.brain-panel h3, .roadmap-panel h3 { margin-bottom: 2rem; font-size: 1.8rem; }

.brain-features { display: flex; flex-direction: column; gap: 2rem; }
.brain-feature { display: flex; gap: 1.5rem; }
.feature-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--brand-blue);
    margin-top: 6px;
    flex-shrink: 0;
}
.feature-indicator.orange { background: var(--brand-orange); }

.roadmap-timeline {
    border-left: 2px solid rgba(255, 255, 255, 0.1);
    padding-left: 2rem;
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}
.timeline-item::before {
    content: '';
    position: absolute;
    left: -35px;
    top: 6px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--brand-navy);
    border: 3px solid var(--brand-blue);
}
.timeline-item h4 { margin-bottom: 0.5rem; }

/* MILESTONES */
.milestone-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.milestone-card {
    padding: 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-white);
}

.milestone-card.active {
    border-color: var(--brand-orange);
    box-shadow: 0 10px 30px rgba(243, 91, 4, 0.08);
}

.milestone-header { margin-bottom: 1.5rem; }
.badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--bg-light);
    color: var(--text-muted);
}
.badge.blue { background: var(--brand-blue-light); color: var(--brand-blue); }
.badge.orange { background: var(--brand-orange-light); color: var(--brand-orange); }

.milestone-card h4 { font-size: 1.25rem; }

/* GATEKEEPER PORTAL */
.portal-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.portal-text h2 { font-size: 2.5rem; margin-bottom: 1.5rem; }
.portal-text p { margin-bottom: 1.5rem; }

.security-badge {
    margin-top: 2rem;
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--brand-navy);
    color: white;
    border-radius: 4px;
    font-weight: 600;
}

.enterprise-form {
    background: var(--bg-white);
    padding: 3rem;
    border-radius: 8px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.input-group { margin-bottom: 1.5rem; }
.input-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-main);
}

.input-group input[type="text"],
.input-group input[type="email"],
.input-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: var(--brand-blue);
    box-shadow: 0 0 0 3px var(--brand-blue-light);
}

.radio-options {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.radio-label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
}

.radio-label input[type="radio"] { margin-top: 4px; }
.radio-text { font-size: 0.95rem; color: var(--text-muted); }

/* FOOTER */
.site-footer {
    background: var(--brand-navy);
    padding: 5rem 0 2rem;
    color: white;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 4rem;
}

.footer-brand h3 { color: white; margin-bottom: 0.5rem; font-size: 1.8rem; }
.footer-brand p { color: rgba(255,255,255,0.7); }

.footer-contact h4 { color: var(--brand-orange); margin-bottom: 1rem; }
.contact-methods p { color: white; margin-bottom: 0.5rem; }
.contact-methods a { color: white; text-decoration: none; }
.contact-methods a:hover { color: var(--brand-orange); }

.footer-legal {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
    text-align: center;
}

.footer-legal p { color: rgba(255,255,255,0.5); font-size: 0.875rem; }

/* RESPONSIVE */
@media (max-width: 992px) {
    .hero-container, .grid-2, .pathway-grid, .feedstock-container, .automation-grid, .portal-container {
        grid-template-columns: 1fr;
    }
    
    .stats-grid, .milestone-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-section { text-align: center; padding-top: 8rem; }
    .cta-group { justify-content: center; }
    
    .nav-links { display: none; }
    
    .form-row { grid-template-columns: 1fr; }
}