:root {
    --color-primary: #2F6FED;
    --color-secondary: #0F172A;
    --color-neutral: #F1F5F9;
    --color-text: #111827;
    --color-accent: #22C55E;
    --color-white: #ffffff;
    --color-grey: #CBD5F5;
    --container-width: 1200px;
    --transition: 0.3s ease;
    --font-family: 'Inter', sans-serif;
}

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

html {
    font-size: 16px;
}

body {
    margin: 0;
    font-family: var(--font-family);
    color: var(--color-text);
    background-color: var(--color-white);
    line-height: 1.6;
}

img {
    max-width: 100%;
    display: block;
    border-radius: 12px;
}

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

a:hover,
a:focus {
    color: var(--color-accent);
}

.container {
    width: min(var(--container-width), 92%);
    margin: 0 auto;
}

.section {
    padding: 80px 0;
}

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

.section-highlight {
    background: linear-gradient(135deg, rgba(47, 111, 237, 0.12), rgba(34, 197, 94, 0.08));
}

h1, h2, h3 {
    color: var(--color-secondary);
    margin-top: 0;
    line-height: 1.2;
}

h1 {
    font-size: 2.75rem;
    margin-bottom: 24px;
}

h2 {
    font-size: 2rem;
    margin-bottom: 20px;
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

p {
    margin: 0 0 16px;
}

ul, ol {
    padding-left: 20px;
    margin: 0 0 16px;
}

.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 999px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}

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

.btn-primary:hover,
.btn-primary:focus {
    background-color: #2255c7;
}

.btn-secondary {
    background-color: var(--color-neutral);
    color: var(--color-secondary);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background-color: #dbe4f3;
}

.btn-link {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.btn-link:hover,
.btn-link:focus {
    background-color: rgba(47, 111, 237, 0.1);
}

form {
    width: 100%;
}

input,
textarea {
    width: 100%;
    padding: 14px;
    border-radius: 10px;
    border: 1px solid #D1D5DB;
    font-size: 1rem;
    transition: border-color var(--transition), box-shadow var(--transition);
    font-family: var(--font-family);
}

input:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(47, 111, 237, 0.2);
}

label {
    font-weight: 600;
    display: block;
    margin-bottom: 8px;
}

textarea {
    resize: vertical;
    min-height: 150px;
}

.form-row {
    margin-bottom: 18px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-full {
    grid-column: 1 / -1;
}

.form-note {
    font-size: 0.9rem;
    color: #475569;
}

.form-hidden {
    position: absolute;
    left: -9999px;
    visibility: hidden;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 72px;
}

.logo-image {
    height: 40px;
    width: auto;
}

.footer-logo {
    height: 60px;
    width: auto;
}

.nav-toggle {
    display: none;
}

.main-nav ul {
    display: flex;
    gap: 24px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav a {
    font-weight: 500;
    color: var(--color-secondary);
    padding: 8px 12px;
    border-radius: 8px;
}

.main-nav a:hover,
.main-nav a:focus,
.main-nav a.active {
    background-color: rgba(47, 111, 237, 0.12);
    color: var(--color-primary);
}

.nav-burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 6px;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background-color: rgba(47, 111, 237, 0.1);
    cursor: pointer;
}

.nav-burger span {
    width: 22px;
    height: 2px;
    background-color: var(--color-secondary);
    transition: transform var(--transition);
}

.nav-overlay {
    display: none;
}

/* Hero */
.hero {
    padding-top: 120px;
    padding-bottom: 80px;
}

.hero-alt {
    background: linear-gradient(120deg, rgba(47, 111, 237, 0.08), rgba(34, 197, 94, 0.08));
}

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

.hero-content .eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.85rem;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.hero-highlights {
    list-style: none;
    padding: 0;
    margin: 24px 0;
    display: grid;
    gap: 14px;
}

.hero-highlights li {
    background-color: var(--color-neutral);
    padding: 12px 16px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 16px;
    font-weight: 500;
}

.hero-highlights span {
    font-size: 1.75rem;
    color: var(--color-primary);
    font-weight: 700;
}

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

/* Keyword grid */
.keyword-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.keyword-card {
    background-color: var(--color-white);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
    border: 1px solid rgba(15, 23, 42, 0.05);
}

.keyword-card h3 {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-primary);
    margin-bottom: 10px;
}

/* Lists and grids */
.two-column {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 48px;
    align-items: center;
}

.three-column {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
}

.stats-list {
    list-style: none;
    padding: 0;
    margin: 32px 0 0;
    display: grid;
    gap: 20px;
}

.stats-list li {
    display: flex;
    gap: 16px;
    align-items: baseline;
    background-color: rgba(47, 111, 237, 0.08);
    padding: 16px;
    border-radius: 14px;
}

.stats-list span {
    font-size: 2rem;
    color: var(--color-primary);
    font-weight: 700;
}

.service-card {
    background-color: var(--color-white);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid rgba(15, 23, 42, 0.06);
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.05);
}

.service-card ul {
    margin: 16px 0 0;
    padding-left: 18px;
}

.process-list {
    counter-reset: process;
    list-style: none;
    padding: 0;
    margin: 0;
}

.process-list li {
    margin-bottom: 24px;
    padding-left: 56px;
    position: relative;
}

.process-list li::before {
    counter-increment: process;
    content: counter(process);
    position: absolute;
    left: 0;
    top: 0;
    width: 40px;
    height: 40px;
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.case-study {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px;
    align-items: center;
}

.case-data {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-top: 24px;
}

.case-data div {
    background-color: var(--color-white);
    border-radius: 12px;
    padding: 16px;
    text-align: center;
    border: 1px solid rgba(15, 23, 42, 0.05);
}

.case-data span {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

/* Tools list */
.tools-list {
    list-style: none;
    padding: 0;
    margin: 24px 0 0;
    display: grid;
    gap: 12px;
}

.tools-list li {
    padding: 12px 16px;
    background-color: rgba(15, 23, 42, 0.05);
    border-radius: 12px;
}

/* FAQ */
.faq-contact {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 48px;
    align-items: start;
}

.faq details {
    background-color: var(--color-white);
    border-radius: 12px;
    padding: 16px 18px;
    margin-bottom: 12px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    box-shadow: 0 10px 20px rgba(15, 23, 42, 0.05);
}

.faq summary {
    font-weight: 600;
    cursor: pointer;
    outline: none;
}

.contact-form-block {
    background-color: var(--color-white);
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
    border: 1px solid rgba(15, 23, 42, 0.05);
}

.contact-form-block h2 {
    margin-bottom: 8px;
}

/* About page */
.facts-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 24px;
}

.facts-grid div {
    background-color: rgba(47, 111, 237, 0.1);
    padding: 16px;
    border-radius: 12px;
}

.facts-grid span {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
}

.values-list {
    list-style: none;
    padding: 0;
    margin: 24px 0 0;
    display: grid;
    gap: 20px;
}

.values-list li {
    background-color: var(--color-white);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid rgba(15, 23, 42, 0.06);
}

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

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

.timeline {
    border-left: 2px solid rgba(15, 23, 42, 0.15);
    padding-left: 24px;
    display: grid;
    gap: 24px;
}

.timeline-item {
    position: relative;
    padding: 12px 16px;
    background-color: rgba(47, 111, 237, 0.08);
    border-radius: 12px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -35px;
    top: 18px;
    width: 12px;
    height: 12px;
    background-color: var(--color-primary);
    border-radius: 50%;
}

.timeline-date {
    font-weight: 700;
    color: var(--color-secondary);
    display: block;
    margin-bottom: 6px;
}

.collab-list,
.security-list,
.prep-list,
.kpi-list {
    list-style: none;
    padding: 0;
    margin: 24px 0 0;
    display: grid;
    gap: 12px;
}

.collab-list li,
.security-list li,
.prep-list li,
.kpi-list li {
    padding: 12px 16px;
    background-color: rgba(15, 23, 42, 0.05);
    border-radius: 12px;
}

/* Services page */
.hero-services .service-highlights {
    list-style: none;
    padding: 0;
    margin: 24px 0 0;
    display: grid;
    gap: 12px;
}

.services-detailed {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.services-card {
    background-color: var(--color-white);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
    border: 1px solid rgba(15, 23, 42, 0.05);
}

.services-card ul {
    padding-left: 18px;
}

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

.process-step {
    background-color: rgba(15, 23, 42, 0.05);
    padding: 24px;
    border-radius: 16px;
    text-align: center;
}

.process-step span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background-color: var(--color-primary);
    color: var(--color-white);
    font-weight: 700;
    margin-bottom: 12px;
}

.collaboration-table {
    background-color: var(--color-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
    border: 1px solid rgba(15, 23, 42, 0.05);
}

.collab-row {
    display: grid;
    grid-template-columns: 1fr 1.2fr 1.4fr;
    gap: 16px;
    padding: 18px 24px;
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}

.collab-row.header {
    background-color: rgba(47, 111, 237, 0.1);
    font-weight: 600;
}

.collab-row:last-child {
    border-bottom: none;
}

/* Contact page */
.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px;
    align-items: start;
}

.contact-details {
    list-style: none;
    padding: 0;
    margin: 16px 0 0;
    display: grid;
    gap: 12px;
}

.next-steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.cta-box {
    background: linear-gradient(135deg, rgba(47, 111, 237, 0.12), rgba(34, 197, 94, 0.1));
    padding: 32px;
    border-radius: 16px;
    font-size: 1.1rem;
    font-weight: 600;
}

/* Thanks page */
.hero-thanks .hero-content {
    max-width: 760px;
}

.summary-box {
    background-color: rgba(15, 23, 42, 0.05);
    border-radius: 16px;
    padding: 24px;
    margin: 24px 0;
}

.summary-box ul {
    list-style: none;
    padding: 0;
    margin: 0 0 16px;
    display: grid;
    gap: 8px;
}

/* Legal pages */
.legal h1 {
    margin-bottom: 24px;
}

.legal h2 {
    margin-top: 32px;
}

.legal ul {
    margin-bottom: 24px;
}

/* Footer */
.site-footer {
    background-color: var(--color-secondary);
    color: var(--color-white);
    padding: 64px 0 32px;
}

.footer-inner {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.footer-brand p,
.footer-note {
    color: rgba(241, 245, 249, 0.85);
}

.footer-contact {
    list-style: none;
    padding: 0;
    margin: 24px 0 0;
    display: grid;
    gap: 12px;
}

.footer-contact a {
    color: rgba(241, 245, 249, 0.95);
}

.footer-nav h4,
.footer-legal h4 {
    color: var(--color-white);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.85rem;
}

.footer-nav ul,
.footer-legal ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 10px;
}

.footer-nav a,
.footer-legal a {
    color: rgba(241, 245, 249, 0.85);
}

.footer-nav a:hover,
.footer-legal a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    margin-top: 40px;
    text-align: center;
    font-size: 0.9rem;
    color: rgba(241, 245, 249, 0.75);
}

/* Cookie banner */
.cookie-banner {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    width: min(420px, 92%);
    background-color: var(--color-white);
    border-radius: 16px;
    box-shadow: 0 28px 60px rgba(15, 23, 42, 0.18);
    padding: 24px;
    z-index: 1100;
    display: none;
}

.cookie-banner__content {
    display: grid;
    gap: 16px;
}

.cookie-banner__actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 1080px) {
    .hero-grid,
    .two-column,
    .case-study,
    .timeline-section,
    .faq-contact,
    .contact-info-grid {
        grid-template-columns: 1fr;
    }

    .three-column,
    .keyword-grid,
    .case-data {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

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

    .collaboration-table {
        overflow-x: auto;
    }

    .collab-row {
        grid-template-columns: repeat(3, minmax(240px, 1fr));
        min-width: 600px;
    }
}

@media (max-width: 768px) {
    body {
        font-size: 0.95rem;
    }

    h1 {
        font-size: 2.2rem;
    }

    h2 {
        font-size: 1.7rem;
    }

    .hero {
        padding-top: 96px;
    }

    .nav-burger {
        display: flex;
    }

    .main-nav {
        position: fixed;
        inset: 0;
        background-color: rgba(15, 23, 42, 0.96);
        color: var(--color-white);
        transform: translateY(-100%);
        transition: transform var(--transition);
        display: flex;
        flex-direction: column;
        padding: 32px;
        gap: 32px;
    }

    .nav-mobile-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.12em;
    }

    .nav-close {
        font-size: 2rem;
        cursor: pointer;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 18px;
    }

    .main-nav a {
        color: var(--color-white);
        font-size: 1.25rem;
    }

    .nav-toggle:checked ~ .main-nav {
        transform: translateY(0);
    }

    .nav-overlay {
        display: none;
    }

    .keyword-grid,
    .three-column,
    .case-data,
    .facts-grid,
    .approach-grid,
    .services-detailed,
    .process-section .process-columns,
    .next-steps {
        grid-template-columns: 1fr;
    }

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

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

    .footer-logo {
        height: 48px;
    }

    .cookie-banner {
        width: min(360px, 92%);
        padding: 20px;
    }
}

@media (max-width: 520px) {
    .hero {
        padding-top: 88px;
    }

    .hero-highlights span {
        font-size: 1.5rem;
    }

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

    .collab-row {
        grid-template-columns: 1fr;
        min-width: 0;
    }

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

    .cookie-banner__actions {
        justify-content: stretch;
    }

    .btn {
        width: 100%;
    }
}