:root {
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --border-color: #cbd5e1;
    --text-color: #0f172a;
    --text-muted: #475569;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-glow: rgba(37, 99, 235, 0.06);
    --accent-blue: #3b82f6;
    --success: #10b981;
    --font-family: 'Inter', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-family);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

.promo-banner {
    background: #eff6ff;
    color: #1e40af;
    border-bottom: 1px solid #bfdbfe;
    text-align: center;
    padding: 0.6rem 1rem;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.2px;
}

header {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 1.25rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.header-logo {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-color);
}

.header-logo-icon {
    color: var(--primary);
    width: 24px;
    height: 24px;
}

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

.mobile-menu-toggle {
    display: block;
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: background-color 0.2s ease;
}

.mobile-menu-toggle:hover {
    background-color: #f1f5f9;
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
    .mobile-menu-toggle {
        display: none;
    }
}

@media (max-width: 767px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 1.5rem;
        gap: 1.25rem;
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
        z-index: 100;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-link {
        font-size: 1.05rem;
        width: 100%;
        text-align: center;
        padding: 0.5rem 0;
    }
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

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

.right-header {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.lang-switcher {
    display: flex;
    gap: 0.25rem;
    background: #f1f5f9;
    padding: 0.2rem;
    border-radius: 9999px;
    border: 1px solid var(--border-color);
}

.lang-btn {
    color: var(--text-muted);
    padding: 0.3rem 0.7rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
}

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

.lang-btn:hover:not(.active) {
    color: var(--text-color);
}

/* Hero Section with light tech background */
.hero {
    width: 100%;
    max-width: 100%;
    margin: 0 auto 3rem auto;
    text-align: center;
    padding: 6.5rem 2rem;
    border-radius: 0;
    border: none;
    border-bottom: 1px solid var(--border-color);
    background-color: #ffffff;
    background-image: 
        linear-gradient(to bottom, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0.75) 100%),
        url('../images/light_security_bg.png');
    background-size: cover;
    background-position: center;
    box-shadow: none;
}

.hero-badge {
    display: inline-block;
    background: #dbeafe;
    border: 1px solid #bfdbfe;
    color: #1d4ed8;
    padding: 0.4rem 0.8rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.04em;
    margin-bottom: 1.5rem;
    color: #0f172a;
}

@media (min-width: 768px) {
    .hero h1 {
        font-size: 3.25rem;
    }
}

.hero p {
    color: var(--text-muted);
    font-size: 1.1rem;
    line-height: 1.6;
    max-width: 750px;
    margin: 0 auto 2.5rem auto;
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
    align-items: center;
}

@media (min-width: 640px) {
    .hero-actions {
        flex-direction: row;
    }
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.75rem;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background: var(--primary);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.25);
}

.btn-secondary {
    background: #ffffff;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
}

.btn-secondary:hover {
    background: #f8fafc;
    transform: translateY(-1px);
}

/* Trust Badges Grid */
.trust-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    max-width: 1100px;
    margin: 0 auto 4rem auto;
    padding: 0 1.5rem;
}

@media (min-width: 640px) {
    .trust-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .trust-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.trust-card {
    background: var(--card-bg);
    border: 1px dashed var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: left;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    box-shadow: 0 1px 3px rgba(0,0,0,0.02);
}

.trust-icon {
    color: var(--primary);
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.trust-content h5 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-color);
}

.trust-content p {
    color: var(--text-muted);
    font-size: 0.8rem;
    line-height: 1.4;
}

/* Section layout */
.section {
    width: 100%;
    padding: 5rem 1.5rem;
}

.section-inner {
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
}

.section-alt {
    background-color: #f1f5f9;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.section-badge {
    display: inline-block;
    background: #dbeafe;
    border: 1px solid #bfdbfe;
    color: #1d4ed8;
    padding: 0.35rem 0.8rem;
    border-radius: 9999px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-header h2 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
    color: #0f172a;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.05rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Explanations Section */
.expl-grid {
    display: flex;
    flex-direction: column;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.expl-row {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
}

@media (min-width: 768px) {
    .expl-row {
        flex-direction: row;
    }
    .expl-row.reverse {
        flex-direction: row-reverse;
    }
    .expl-col {
        width: 50%;
    }
}

.expl-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.03em;
    color: #0f172a;
}

.expl-text p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

.expl-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.svg-diagram {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    max-width: 360px;
    width: 100%;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.03);
}

/* Features Section */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.25rem;
    box-shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.08);
    transition: all 0.2s ease;
}

.feature-card:hover {
    border-color: rgba(37, 99, 235, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(15, 23, 42, 0.12);
}

.feature-icon-wrapper {
    background: #eff6ff;
    color: var(--primary);
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
    color: #0f172a;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Onboarding Steps Section */
.steps-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .steps-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.step-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    text-align: center;
    position: relative;
    box-shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.08);
    transition: all 0.2s ease;
}

.step-card:hover {
    border-color: rgba(37, 99, 235, 0.2);
}

.step-number {
    background: #eff6ff;
    color: var(--primary);
    width: 36px;
    height: 36px;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    margin: 0 auto 1.5rem auto;
}

.step-card h4 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: #0f172a;
}

.step-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* FAQ Section */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.01);
}

.faq-question {
    padding: 1.25rem 1.5rem;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
    color: #0f172a;
}

.faq-question:hover {
    background: #f8fafc;
}

.faq-answer {
    padding: 0 1.5rem 1.25rem 1.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    display: none;
}

.faq-icon {
    transition: transform 0.2s ease;
    color: var(--text-muted);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    color: var(--primary);
}

/* Site Footer styles */
.site-footer {
    border-top: 1px solid var(--border-color);
    padding: 5rem 1.5rem 4rem 1.5rem;
    background: #f8fafc;
    color: var(--text-color);
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

@media (min-width: 768px) {
    .footer-inner {
        grid-template-columns: 2fr 1fr 1fr;
        gap: 4rem;
    }
}

.footer-column {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
}

.footer-column.brand .footer-logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-color);
}

.footer-tagline {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.5;
    max-width: 320px;
    margin: 0.25rem 0;
    text-align: left;
}

.footer-bottom {
    max-width: 1100px;
    margin: 3rem auto 0 auto;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    width: 100%;
}

.footer-copyright {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer-column h4 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #475569;
    margin-bottom: 0.5rem;
}

.footer-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease, transform 0.2s ease;
    display: inline-block;
}

.footer-link:hover {
    color: var(--primary);
    transform: translateX(2px);
}

.footer-badge-sovereign {
    display: inline-block;
    padding: 0.25rem 0.6rem;
    background: #eff6ff;
    color: var(--primary);
    border: 1px solid #bfdbfe;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-top: 0.5rem;
}

.footer-link:hover {
    color: var(--primary);
}

/* Final CTA Section */
.section-cta {
    width: 100%;
    padding: 4rem 1.5rem;
    background: #ffffff;
}

.cta-banner {
    background: linear-gradient(135deg, #1e40af 0%, #2563eb 100%);
    border-radius: 20px;
    padding: 4rem 2rem;
    text-align: center;
    color: #ffffff;
    box-shadow: 0 10px 25px -5px rgba(37, 99, 235, 0.2);
}

.cta-banner h2 {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.03em;
    color: #ffffff;
}

.cta-banner p {
    font-size: 1.1rem;
    color: #dbeafe;
    max-width: 600px;
    margin: 0 auto 2.5rem auto;
    line-height: 1.6;
}

.btn-cta {
    background: #ffffff;
    color: var(--primary);
    border: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn-cta:hover {
    background: #f8fafc;
    color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

.infra-details {
    max-width: 800px;
    margin: -1.5rem auto 3rem auto;
    text-align: center;
}

.infra-details summary {
    display: inline-flex;
    align-items: center;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    user-select: none;
    padding: 0.4rem 1rem;
    border-radius: 9999px;
    background: var(--primary-glow);
    border: 1px solid rgba(37, 99, 235, 0.12);
    transition: all 0.2s ease;
    outline: none;
}

.infra-details summary::-webkit-details-marker {
    display: none;
}
.infra-details summary {
    list-style: none;
}

.infra-details summary:hover {
    background: rgba(37, 99, 235, 0.1);
    transform: translateY(-1px);
}

.infra-details[open] summary {
    margin-bottom: 1.25rem;
    background: rgba(37, 99, 235, 0.1);
}

.infra-details p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-muted);
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    text-align: left;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02);
    animation: slideDown 0.25s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Team Section */
.team-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    max-width: 800px;
    margin: 3rem auto 0 auto;
}

@media (min-width: 640px) {
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .team-grid {
        grid-template-columns: repeat(3, 1fr);
        max-width: 1100px;
    }
}

.team-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    text-align: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.team-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
}

.team-img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 1.5rem auto;
    border: 3px solid #eff6ff;
    box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.1);
}

.team-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.25rem;
}

.team-role {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.team-bio {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.5;
}