:root {
    --primary-blue: #0b1c3f;
    --dark-blue: #07122b;
    --accent-cyan: #00d2ff;
    --cyan-text: #0096c7;
    --white: #ffffff;
    --light-bg: #f0f7ff;
    --gray-text: #475569;
    --border-color: #e2e8f0;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

body {
    background-color: var(--light-bg);
    color: #1e293b;
    line-height: 1.6;
}

/* Navbar */
.navbar {
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-text {
    font-weight: 800;
    letter-spacing: 1.5px;
    color: var(--primary-blue);
    font-size: 1.25rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: #334155;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

.btn-primary-nav {
    background-color: var(--primary-blue);
    color: white;
    padding: 0.6rem 1.25rem;
    border-radius: 20px;
    font-weight: 600;
    text-decoration: none;
    font-size: 0.9rem;
    transition: background 0.2s;
}

.btn-primary-nav:hover {
    background-color: #172554;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #f0f7ff 0%, #e2eafc 100%);
    padding: 5rem 2rem;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3.5rem;
    align-items: center;
}

.badge {
    background: rgba(0, 150, 199, 0.1);
    color: var(--cyan-text);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    display: inline-block;
    margin-bottom: 1.2rem;
}

.hero-content h1 {
    font-size: 3rem;
    line-height: 1.15;
    font-weight: 800;
    color: var(--primary-blue);
    margin-bottom: 1.2rem;
}

.hero-desc {
    color: var(--gray-text);
    font-size: 1.05rem;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    transition: background 0.2s;
}

.btn-primary:hover {
    background-color: #172554;
}

.btn-outline {
    background: transparent;
    color: var(--primary-blue);
    border: 1px solid var(--primary-blue);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
}

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

/* Hero Graphic Box */
.hero-graphic {
    background: radial-gradient(circle at top right, #172554 0%, #07122b 75%);
    color: white;
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 20px 25px -5px rgba(11, 28, 63, 0.2);
}

.hg-header {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-cyan);
    letter-spacing: 1px;
    margin-bottom: 0.75rem;
}

.hero-graphic h2 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.hero-graphic p {
    color: #cbd5e1;
    font-size: 0.95rem;
    margin-bottom: 2rem;
}

.pill-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.pill {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* Sections General */
section {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem auto;
}

.section-tag {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 1px;
    display: inline-block;
    margin-bottom: 0.75rem;
}

.cyan-text {
    color: var(--cyan-text);
}

.section-header h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--gray-text);
    font-size: 1.05rem;
}

/* Grid Layouts */
.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

/* Cards */
.card {
    background: white;
    padding: 2rem 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
}

.card-num {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--cyan-text);
    display: block;
    margin-bottom: 1rem;
}

.card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.75rem;
}

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

/* Challenge Section */
.challenge-section {
    background: white;
    width: 100%;
    max-width: 100%;
    padding: 5rem 10%;
}

/* Integrated Model Section */
.integrated-section {
    background: var(--light-bg);
    width: 100%;
    max-width: 100%;
    padding: 5rem 10%;
}

.integrated-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
    align-items: start;
}

.model-desc {
    color: var(--gray-text);
    margin-bottom: 2rem;
    font-size: 1rem;
}

.steps-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.step-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.step-badge {
    background: var(--primary-blue);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.step-item h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.25rem;
}

.step-item p {
    font-size: 0.85rem;
    color: var(--gray-text);
}

/* Flagship Demonstration Card */
.flagship-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.03);
}

.flagship-tag {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--cyan-text);
    letter-spacing: 0.5px;
    display: block;
    margin-bottom: 0.5rem;
}

.flagship-card h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.flagship-text {
    font-size: 0.9rem;
    color: var(--gray-text);
    margin-bottom: 2rem;
}

.flagship-metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.f-metric {
    background: #f8fafc;
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 8px;
}

.fm-val {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--primary-blue);
    display: block;
    margin-bottom: 2px;
}

.fm-label {
    font-size: 0.75rem;
    color: var(--gray-text);
}

/* Solutions Section */
.solutions-section {
    background: white;
    width: 100%;
    max-width: 100%;
    padding: 5rem 10%;
}

/* Impact Section */
.impact-section {
    background: var(--dark-blue);
    color: white;
    width: 100%;
    max-width: 100%;
    padding: 5rem 10%;
}

.impact-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.impact-left h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: white;
}

.impact-left p {
    color: #cbd5e1;
    font-size: 1rem;
}

.impact-right-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.impact-box {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 12px;
}

.ib-val {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--accent-cyan);
    display: block;
    margin-bottom: 0.5rem;
}

.ib-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
    display: block;
    margin-bottom: 0.5rem;
}

.ib-label {
    font-size: 0.8rem;
    color: #94a3b8;
}

/* CTA Section */
.cta-section {
    background: #f0f7ff;
    width: 100%;
    max-width: 100%;
    padding: 5rem 10%;
    text-align: center;
}

.mt-4 {
    margin-top: 1.5rem;
}

/* Footer */
.footer {
    background: var(--dark-blue);
    color: white;
    padding: 3rem 10%;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-brand {
    font-weight: 800;
    font-size: 0.9rem;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.footer-sub {
    font-size: 0.8rem;
    color: #94a3b8;
}

.footer-contact {
    text-align: right;
    font-size: 0.85rem;
    color: #cbd5e1;
}

/* Responsive */
@media (max-width: 1024px) {

    .hero-container,
    .integrated-grid,
    .impact-container,
    .footer-container {
        grid-template-columns: 1fr;
    }

    .grid-4,
    .grid-3 {
        grid-template-columns: 1fr;
    }

    .nav-links {
        display: none;
    }

    .footer-contact {
        text-align: left;
        margin-top: 1rem;
    }
}