:root {
    --color-primary: #1E3A8A;
    --color-accent: #FF6A00;
    --color-teal: #00A8A8;
    --color-charcoal: #1F2937;
    --color-cloud: #F9FAFB;
    --color-white: #FFFFFF;
    --color-muted: #6B7280;
    --color-border: #E5E7EB;
    --font-base: 'Inter', 'IBM Plex Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition-fast: 0.2s ease-in-out;
    --max-width: 1140px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-base);
    background-color: var(--color-cloud);
    color: var(--color-charcoal);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover,
a:focus {
    text-decoration: underline;
}

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

h1, h2, h3, h4 {
    color: var(--color-charcoal);
    margin-top: 0;
    font-weight: 600;
}

p {
    margin: 0 0 1.2rem;
}

ul, ol {
    margin: 0 0 1.2rem 1.5rem;
    padding: 0;
}

li {
    margin-bottom: 0.6rem;
}

.section {
    padding: 80px 0;
}

.section.alt {
    background-color: var(--color-white);
}

.container {
    width: min(94%, var(--max-width));
    margin: 0 auto;
}

.skip-link {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-charcoal);
    color: var(--color-white);
    padding: 12px 20px;
    z-index: 1000;
}

.skip-link:focus {
    top: 10px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 900;
    background-color: rgba(249, 250, 251, 0.98);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(12px);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    color: var(--color-charcoal);
}

.brand-logo {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.brand-name {
    font-size: 1.1rem;
}

.nav-toggle {
    display: none;
}

.nav-toggle-label {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle-label span {
    width: 24px;
    height: 2px;
    background-color: var(--color-charcoal);
    display: block;
}

.primary-nav ul {
    display: flex;
    align-items: center;
    gap: 24px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.primary-nav a {
    padding: 10px 0;
    font-weight: 500;
    color: var(--color-charcoal);
}

.primary-nav a.active {
    color: var(--color-accent);
}

.nav-close {
    display: none;
}

.hero {
    background-color: var(--color-white);
    padding-top: 120px;
}

.hero-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 48px;
    align-items: center;
}

.hero-content ul {
    list-style: disc;
}

.hero-highlights {
    margin-left: 1.5rem;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 22px;
    border-radius: 8px;
    font-weight: 600;
    border: 2px solid transparent;
    cursor: pointer;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.metrics {
    background-color: var(--color-cloud);
}

.metrics-grid {
    display: grid;
    gap: 24px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.metric-card {
    background-color: var(--color-white);
    border-radius: 12px;
    padding: 24px;
    border: 1px solid var(--color-border);
    box-shadow: 0 8px 24px rgba(30, 58, 138, 0.08);
}

.metric-card h3 {
    color: var(--color-primary);
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.cards-grid {
    display: grid;
    gap: 24px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.service-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 24px;
}

.approach-grid {
    display: grid;
    gap: 24px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.approach-step {
    background-color: var(--color-white);
    border-radius: 12px;
    padding: 24px;
    border: 1px solid var(--color-border);
}

.compliance-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 48px;
    align-items: center;
}

.case-grid,
.methodology-grid,
.network-grid,
.detail-grid,
.contact-grid,
.info-grid,
.availability-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 48px;
    align-items: center;
}

.case-content ul,
.detail-content ul,
.compliance-content ul,
.assurance-list {
    list-style: disc;
    margin-left: 1.5rem;
}

.faq-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.faq-item {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 18px 24px;
}

.faq-item summary {
    font-weight: 600;
    cursor: pointer;
    color: var(--color-primary);
}

.faq-item[open] {
    border-color: var(--color-primary);
}

.contact-cta,
.contact-form-section {
    background-color: var(--color-white);
}

.contact-details p {
    margin-bottom: 0.8rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 24px;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-field input,
.form-field select,
.form-field textarea {
    padding: 12px 14px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    font-family: var(--font-base);
    font-size: 1rem;
    background-color: var(--color-cloud);
}

.form-field textarea {
    resize: vertical;
}

.form-notice {
    font-size: 0.9rem;
    color: var(--color-muted);
}

.site-footer {
    background-color: var(--color-charcoal);
    color: var(--color-white);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    gap: 40px;
    grid-template-columns: 2fr 1fr 1fr;
    align-items: start;
}

.footer-logo {
    width: 100px;
    height: auto;
}

.footer-contact {
    list-style: none;
    margin: 16px 0 0;
    padding: 0;
}

.footer-contact li {
    margin-bottom: 10px;
}

.footer-contact a {
    color: var(--color-white);
}

.footer-nav ul,
.footer-legal ul {
    list-style: none;
    padding: 0;
    margin: 16px 0 0;
}

.footer-nav li,
.footer-legal li {
    margin-bottom: 10px;
}

.footer-meta {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 20px;
    text-align: center;
    color: rgba(255, 255, 255, 0.9);
    margin-top: 30px;
}

.thank-you-details {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 24px;
    margin: 24px 0;
}

.legal-list {
    list-style: disc;
    margin-left: 1.5rem;
}

.legal-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--color-white);
    border-radius: 12px;
    overflow: hidden;
    margin-top: 24px;
}

.legal-table th,
.legal-table td {
    border: 1px solid var(--color-border);
    padding: 16px;
    text-align: left;
}

.cookie-banner {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--color-charcoal);
    color: var(--color-white);
    padding: 24px;
    border-radius: 12px;
    max-width: 340px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
    z-index: 950;
}

.cookie-banner a {
    color: var(--color-accent);
}

.cookie-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.cookie-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.cookie-banner .btn-secondary {
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.7);
}

.cookie-banner .btn-secondary:hover,
.cookie-banner .btn-secondary:focus {
    background-color: rgba(255, 255, 255, 0.15);
}

.is-hidden {
    display: none !important;
}

.cta-box {
    background-color: var(--color-white);
    border-radius: 16px;
    padding: 32px;
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    box-shadow: 0 10px 30px rgba(30, 58, 138, 0.08);
}

.cta-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.data-points {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.network-grid,
.story-grid {
    display: grid;
    gap: 48px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: center;
}

.story-timeline {
    display: grid;
    gap: 18px;
}

.story-timeline article {
    background-color: var(--color-white);
    border-radius: 12px;
    padding: 24px;
    border: 1px solid var(--color-border);
}

@media (max-width: 1100px) {
    .metrics-grid,
    .cards-grid,
    .approach-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .data-points {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .footer-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .hero-grid,
    .compliance-grid,
    .case-grid,
    .methodology-grid,
    .network-grid,
    .detail-grid,
    .contact-grid,
    .info-grid,
    .availability-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    .nav-toggle-label {
        display: flex;
    }

    .primary-nav {
        position: fixed;
        inset: 0;
        background-color: rgba(31, 41, 55, 0.97);
        backdrop-filter: blur(6px);
        display: flex;
        justify-content: center;
        align-items: center;
        transform: translateX(100%);
        transition: none;
    }

    .primary-nav ul {
        flex-direction: column;
        gap: 32px;
    }

    .primary-nav a {
        color: var(--color-white);
        font-size: 1.4rem;
    }

    .nav-close {
        position: absolute;
        top: 24px;
        right: 24px;
        font-size: 2.5rem;
        color: var(--color-white);
        display: block;
        cursor: pointer;
    }

    .nav-toggle:checked ~ .primary-nav {
        transform: translateX(0);
    }

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

    .cards-grid,
    .metrics-grid {
        grid-template-columns: 1fr;
    }

    .approach-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

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

    .cookie-banner {
        left: 20px;
        right: 20px;
        max-width: unset;
    }

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

@media (max-width: 640px) {
    .section {
        padding: 60px 0;
    }

    .hero {
        padding-top: 100px;
    }

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

    .data-points {
        grid-template-columns: 1fr;
    }

    .cta-box {
        flex-direction: column;
        align-items: flex-start;
    }

    .cookie-actions {
        flex-direction: column;
        align-items: stretch;
    }
}

@media (max-width: 480px) {
    .nav-container {
        height: 64px;
    }

    .brand-logo {
        width: 44px;
        height: 44px;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .cookie-banner {
        bottom: 10px;
        left: 10px;
        right: 10px;
    }
}

@media (prefers-color-scheme: dark) {
    body {
        background-color: #0f172a;
        color: #E2E8F0;
    }

    .section {
        background-color: transparent;
    }

    .hero,
    .contact-form-section,
    .contact-cta,
    .cta-box,
    .metric-card,
    .service-card,
    .approach-step,
    .faq-item,
    .thank-you-details,
    .legal-table,
    .story-timeline article {
        background-color: rgba(15, 23, 42, 0.7);
        border-color: rgba(148, 163, 184, 0.2);
        color: #E2E8F0;
    }

    .primary-nav a {
        color: #E2E8F0;
    }

    .btn-secondary {
        color: #E2E8F0;
        border-color: rgba(226, 232, 240, 0.6);
    }

    .btn-secondary:hover,
    .btn-secondary:focus {
        background-color: rgba(148, 163, 184, 0.2);
    }

    .cookie-banner {
        background-color: rgba(15, 23, 42, 0.95);
    }
}