:root {
    --background: #0b0c0f;
    --surface: #151820;
    --text: #f2f3f5;
    --muted: #a7acb7;
    --border: #2b303a;
    --accent: #ffffff;
    --focus: #ffde73;

    color-scheme: dark;
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    min-width: 320px;
    margin: 0;
    background: var(--background);
    color: var(--text);
}

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

a:focus-visible,
summary:focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 4px;
}

.skip-link {
    position: fixed;
    z-index: 3;
    top: 12px;
    left: 12px;
    padding: 10px 14px;
    background: var(--accent);
    color: var(--background);
    transform: translateY(-160%);
}

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

.page {
    display: flex;
    flex-direction: column;
    width: min(1100px, calc(100% - 48px));
    min-height: 100vh;
    margin: 0 auto;
}

.site-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 32px;
    padding: 40px 0 0;
}

.brand-lockup {
    flex-shrink: 0;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 14px;
}

.brand-mark {
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.05em;
}

.brand-name {
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.18em;
}

.legal-name {
    margin: 10px 0 0 56px;
    color: var(--muted);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.14em;
}

.site-nav,
.site-footer nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 20px;
}

.site-nav {
    color: var(--muted);
    font-size: 14px;
}

.site-nav a:hover,
.site-footer a:hover,
.text-link:hover,
.products-menu summary:hover {
    color: var(--accent);
}

.products-menu {
    position: relative;
}

.products-menu summary {
    cursor: pointer;
    list-style: none;
}

.products-menu summary::-webkit-details-marker {
    display: none;
}

.products-menu summary::after {
    margin-left: 6px;
    content: "+";
}

.products-menu[open] summary::after {
    content: "−";
}

.products-popover {
    position: absolute;
    z-index: 2;
    top: calc(100% + 12px);
    right: 0;
    min-width: 190px;
    padding: 8px;
    border: 1px solid var(--border);
    background: var(--surface);
    box-shadow: 0 12px 30px rgb(0 0 0 / 25%);
}

.products-popover a {
    display: block;
    padding: 10px 12px;
    color: var(--text);
}

.products-popover a:hover {
    background: #202530;
}

.hero {
    max-width: 780px;
    padding: 130px 0;
}

.eyebrow,
.label,
.article-meta {
    margin: 0 0 24px;
    color: var(--muted);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.14em;
    line-height: 1.4;
}

h1,
h2,
h3 {
    margin: 0;
    font-weight: 600;
}

h1 {
    max-width: 800px;
    font-size: clamp(44px, 7vw, 80px);
    line-height: 0.98;
    letter-spacing: -0.06em;
}

h2 {
    font-size: clamp(31px, 4vw, 48px);
    line-height: 1;
    letter-spacing: -0.045em;
}

h3 {
    margin-top: 42px;
    font-size: 21px;
    letter-spacing: -0.025em;
}

.lead,
.section-copy p {
    max-width: 620px;
    margin: 30px 0 0;
    color: var(--muted);
    font-size: 18px;
    line-height: 1.7;
}

.content-section {
    display: grid;
    grid-template-columns: minmax(210px, 0.75fr) minmax(0, 1.25fr);
    gap: 72px;
    padding: 44px 0 54px;
    border-top: 1px solid var(--border);
}

.section-copy p {
    margin-top: 0;
}

.text-link {
    display: inline-block;
    margin-top: 28px;
    color: var(--accent);
    font-size: 15px;
    font-weight: 600;
}

.site-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    margin-top: auto;
    padding: 24px 0;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 12px;
    line-height: 1.5;
}

.site-footer nav {
    gap: 16px;
}

.article {
    width: min(760px, 100%);
    padding: 90px 0 100px;
}

.article h1 {
    font-size: clamp(42px, 6vw, 66px);
}

.article-intro {
    margin: 30px 0 52px;
    color: var(--muted);
    font-size: 19px;
    line-height: 1.7;
}

.article-section {
    padding: 34px 0;
    border-top: 1px solid var(--border);
}

.article-section p,
.article-section li {
    color: var(--muted);
    font-size: 16px;
    line-height: 1.75;
}

.article-section p {
    margin: 18px 0 0;
}

.article-section ul,
.article-section ol {
    margin: 18px 0 0;
    padding-left: 22px;
}

.article-section li + li {
    margin-top: 8px;
}

.article-section a,
.article-intro a {
    color: var(--accent);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

.link-list {
    display: grid;
    margin-top: 22px;
    border-top: 1px solid var(--border);
}

.link-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 18px 0;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    font-size: 16px;
}

.link-list a:hover {
    padding-left: 8px;
}

.notice {
    margin: 30px 0 0;
    padding: 20px 22px;
    border-left: 3px solid var(--accent);
    background: var(--surface);
    color: var(--muted);
    font-size: 16px;
    line-height: 1.7;
}

.error-page {
    display: grid;
    min-height: calc(100vh - 166px);
    place-items: center start;
    padding: 90px 0;
}

.error-page h1 {
    max-width: 700px;
}

@media (max-width: 700px) {
    .page {
        width: min(100% - 32px, 1100px);
    }

    .site-header,
    .site-footer {
        align-items: flex-start;
        flex-direction: column;
    }

    .site-header {
        gap: 24px;
        padding-top: 28px;
    }

    .site-nav {
        gap: 16px;
    }

    .products-popover {
        right: auto;
        left: 0;
    }

    .hero {
        padding: 88px 0;
    }

    h1 {
        font-size: clamp(42px, 13vw, 64px);
    }

    .content-section {
        grid-template-columns: 1fr;
        gap: 28px;
        padding: 36px 0 44px;
    }

    .article {
        padding: 72px 0 80px;
    }

    .article-section {
        padding: 30px 0;
    }
}