:root {
    --color-primary: #175cff;
    --color-primary-dark: #0c3fc6;
    --color-text: #172033;
    --color-muted: #637083;
    --color-border: #dfe5ee;
    --color-background: #ffffff;
    --color-background-muted: #f5f7fb;
    --color-dark: #101827;
    --container: 1180px;
    --radius: 18px;
    --shadow: 0 18px 50px rgba(17, 31, 57, 0.08);
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    overflow-x: hidden;
    color: var(--color-text);
    background: var(--color-background);
    font-family:
        Inter,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;
    font-size: 16px;
    line-height: 1.65;
}

body.menu-open {
    overflow: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select,
textarea {
    font: inherit;
}

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

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1,
h2,
h3 {
    color: var(--color-dark);
    line-height: 1.15;
}

h1 {
    max-width: 850px;
    margin-bottom: 24px;
    font-size: clamp(2.5rem, 6vw, 4.8rem);
    letter-spacing: -0.055em;
}

h2 {
    margin-bottom: 20px;
    font-size: clamp(2rem, 4vw, 3.25rem);
    letter-spacing: -0.04em;
}

h3 {
    margin-bottom: 14px;
    font-size: 1.4rem;
}

.container {
    width: min(calc(100% - 40px), var(--container));
    margin-inline: auto;
}

.narrow {
    max-width: 820px;
}

.skip-link {
    position: fixed;
    z-index: 9999;
    top: 12px;
    left: 12px;
    padding: 10px 14px;
    transform: translateY(-150%);
    border-radius: 8px;
    color: #fff;
    background: var(--color-dark);
}

.skip-link:focus {
    transform: translateY(0);
}

.site-header {
    position: sticky;
    z-index: 1000;
    top: 0;
    border-bottom: 1px solid rgba(223, 229, 238, 0.8);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(14px);
}

.header-inner {
    display: flex;
    min-height: 76px;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo {
    flex: 0 0 auto;
    color: var(--color-dark);
    font-size: 1.55rem;
    font-weight: 800;
    letter-spacing: -0.05em;
}

.logo span {
    color: var(--color-primary);
}

.desktop-nav {
    display: flex;
    align-items: center;
    gap: 24px;
}

.desktop-nav a {
    color: #354156;
    font-size: 0.94rem;
    font-weight: 600;
}

.desktop-nav a:hover,
.desktop-nav a[aria-current="page"] {
    color: var(--color-primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 14px;
}

.language-switcher,
.mobile-languages {
    display: flex;
    align-items: center;
    gap: 4px;
}

.language-switcher a,
.mobile-languages a {
    display: grid;
    min-width: 34px;
    height: 34px;
    place-items: center;
    border-radius: 8px;
    color: var(--color-muted);
    font-size: 0.78rem;
    font-weight: 800;
}

.language-switcher a:hover,
.language-switcher a[aria-current="true"],
.mobile-languages a:hover,
.mobile-languages a[aria-current="true"] {
    color: var(--color-primary);
    background: #edf3ff;
}

.button {
    display: inline-flex;
    min-height: 48px;
    align-items: center;
    justify-content: center;
    padding: 12px 22px;
    border: 1px solid var(--color-primary);
    border-radius: 12px;
    color: #fff;
    background: var(--color-primary);
    font-weight: 750;
    transition:
        background 0.2s ease,
        border-color 0.2s ease,
        transform 0.2s ease;
}

.button:hover {
    border-color: var(--color-primary-dark);
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

.button-small {
    min-height: 42px;
    padding: 9px 16px;
    font-size: 0.9rem;
}

.button-secondary {
    color: var(--color-dark);
    border-color: var(--color-border);
    background: #fff;
}

.button-secondary:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: #fff;
}

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 10px;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    background: #fff;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    height: 2px;
    margin: 5px 0;
    border-radius: 4px;
    background: var(--color-dark);
}

.mobile-menu {
    position: fixed;
    z-index: 999;
    inset: 77px 0 0;
    padding: 20px;
    background: rgba(16, 24, 39, 0.45);
}

.mobile-menu-inner {
    width: min(100%, 520px);
    margin-left: auto;
    padding: 22px;
    border-radius: 16px;
    background: #fff;
    box-shadow: var(--shadow);
}

.mobile-menu nav {
    display: grid;
}

.mobile-menu nav a {
    padding: 13px 4px;
    border-bottom: 1px solid var(--color-border);
    font-weight: 700;
}

.mobile-menu nav a[aria-current="page"] {
    color: var(--color-primary);
}

.mobile-languages {
    margin-top: 20px;
}

.hero {
    padding: 96px 0 88px;
    background:
        radial-gradient(circle at 85% 10%, rgba(23, 92, 255, 0.15), transparent 28%),
        linear-gradient(180deg, #f8faff 0%, #ffffff 100%);
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(300px, 0.6fr);
    align-items: center;
    gap: 64px;
}

.eyebrow {
    margin-bottom: 16px;
    color: var(--color-primary);
    font-size: 0.8rem;
    font-weight: 850;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.hero-text {
    max-width: 730px;
    margin-bottom: 30px;
    color: var(--color-muted);
    font-size: 1.16rem;
}

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

.hero-panel {
    display: grid;
    gap: 12px;
    padding: 16px;
    border: 1px solid rgba(223, 229, 238, 0.9);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.84);
    box-shadow: var(--shadow);
}

.hero-panel-item {
    display: grid;
    grid-template-columns: 48px 1fr;
    align-items: center;
    gap: 16px;
    padding: 18px;
    border-radius: 14px;
    background: var(--color-background-muted);
}

.hero-panel-item strong {
    color: var(--color-primary);
    font-size: 1.05rem;
}

.hero-panel-item span {
    font-weight: 700;
    line-height: 1.4;
}

.section {
    padding: 88px 0;
}

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

.section-heading {
    max-width: 760px;
    margin-bottom: 44px;
}

.section-heading > p:last-child,
.page-hero p,
.contact-banner p {
    color: var(--color-muted);
    font-size: 1.08rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.feature-card,
.content-card {
    padding: 30px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: #fff;
    box-shadow: 0 10px 30px rgba(17, 31, 57, 0.04);
}

.feature-card p,
.content-card p {
    color: var(--color-muted);
}

.feature-card a {
    color: var(--color-primary);
    font-weight: 750;
}

.card-number {
    display: inline-block;
    margin-bottom: 30px;
    color: var(--color-primary);
    font-size: 0.82rem;
    font-weight: 850;
}

.split-section {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 70px;
}

.check-list {
    display: grid;
    gap: 14px;
}

.check-list div {
    position: relative;
    padding: 18px 20px 18px 52px;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: #fff;
    font-weight: 650;
}

.check-list div::before {
    position: absolute;
    top: 18px;
    left: 19px;
    display: grid;
    width: 22px;
    height: 22px;
    place-items: center;
    border-radius: 50%;
    color: #fff;
    background: var(--color-primary);
    content: "✓";
    font-size: 0.75rem;
}

.contact-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    padding: 42px;
    border-radius: 24px;
    color: #fff;
    background: var(--color-dark);
}

.contact-banner h2 {
    color: #fff;
}

.contact-banner p {
    max-width: 700px;
    margin-bottom: 0;
    color: #b9c2d0;
}

.page-hero {
    padding: 90px 0 60px;
    background: var(--color-background-muted);
}

.page-hero h1 {
    font-size: clamp(2.4rem, 5vw, 4.2rem);
}

.error-page {
    display: grid;
    min-height: 65vh;
    place-items: center;
    padding: 80px 0;
    text-align: center;
}

.error-code {
    margin-bottom: 0;
    color: var(--color-primary);
    font-size: clamp(5rem, 15vw, 10rem);
    font-weight: 900;
    line-height: 1;
    letter-spacing: -0.08em;
}

.site-footer {
    padding-top: 68px;
    color: #b7c0cf;
    background: var(--color-dark);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 42px;
}

.footer-grid > div {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 9px;
}

.footer-grid h2 {
    margin-bottom: 10px;
    color: #fff;
    font-size: 1rem;
    letter-spacing: 0;
}

.footer-grid a:hover {
    color: #fff;
}

.footer-logo {
    margin-bottom: 10px;
    color: #fff;
}

.footer-grid p {
    max-width: 380px;
}

.footer-bottom {
    margin-top: 50px;
    padding: 22px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
}

.footer-bottom p {
    margin: 0;
}

@media (max-width: 1050px) {
    .desktop-nav {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .header-actions > .language-switcher {
        display: none;
    }
}

@media (max-width: 820px) {
    .hero {
        padding: 72px 0;
    }

    .hero-grid,
    .split-section {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .contact-banner {
        align-items: flex-start;
        flex-direction: column;
    }

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

@media (max-width: 560px) {
    .container {
        width: min(calc(100% - 28px), var(--container));
    }

    .header-inner {
        min-height: 68px;
    }

    .header-actions .button {
        display: none;
    }

    .mobile-menu {
        inset: 69px 0 0;
        padding: 12px;
    }

    .hero {
        padding: 56px 0;
    }

    .section {
        padding: 64px 0;
    }

    .feature-card,
    .content-card,
    .contact-banner {
        padding: 24px;
    }

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