:root {
    color-scheme: light;
    --page-background: #f5f7fb;
    --surface: #ffffff;
    --surface-muted: #eef4ff;
    --text: #172033;
    --text-muted: #536078;
    --border: #d8e0ef;
    --brand: #0b63ce;
    --brand-dark: #084a99;
    --accent: #16a34a;
    --code-background: #101827;
    --code-text: #e5edf9;
    --shadow: 0 18px 50px rgba(23, 32, 51, 0.08);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--page-background);
    color: var(--text);
    line-height: 1.65;
}

a {
    color: var(--brand);
    text-underline-offset: 0.18em;
}

a:hover {
    color: var(--brand-dark);
}

.site-header,
.site-footer {
    background: var(--surface);
    border-color: var(--border);
}

.site-header {
    border-bottom: 1px solid var(--border);
}

.site-header__inner,
.site-footer__inner,
.page-shell {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
}

.site-header__inner {
    min-height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand-link {
    color: var(--text);
    font-weight: 800;
    font-size: 1.08rem;
    text-decoration: none;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 18px;
}

.site-nav a {
    font-weight: 650;
    text-decoration: none;
}

.page-shell {
    padding: 32px 0 72px;
}

.breadcrumbs {
    margin-bottom: 28px;
    color: var(--text-muted);
    font-size: 0.94rem;
}

.breadcrumbs ol {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.breadcrumbs li:not(:last-child)::after {
    content: "/";
    margin-left: 8px;
    color: #8792a7;
}

.hero,
.content-card,
.resource-card,
.cta-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: var(--shadow);
}

.hero {
    padding: clamp(28px, 5vw, 58px);
    margin-bottom: 28px;
}

.eyebrow {
    margin: 0 0 10px;
    color: var(--brand);
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

h1,
h2,
h3 {
    line-height: 1.18;
}

h1 {
    max-width: 880px;
    margin: 0;
    font-size: clamp(2rem, 5vw, 3.8rem);
    letter-spacing: -0.035em;
}

h2 {
    margin: 0 0 18px;
    font-size: clamp(1.45rem, 3vw, 2.1rem);
}

h3 {
    margin: 28px 0 10px;
    font-size: 1.18rem;
}

.hero__lede {
    max-width: 780px;
    margin: 22px 0 0;
    color: var(--text-muted);
    font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.quick-verdict {
    display: grid;
    grid-template-columns: minmax(0, 2fr) repeat(2, minmax(150px, 1fr));
    gap: 18px;
    margin-top: 28px;
    padding: 22px;
    background: var(--surface-muted);
    border-left: 5px solid var(--brand);
    border-radius: 12px;
}

.quick-verdict p {
    margin: 0;
}

.quick-verdict strong {
    display: block;
    margin-bottom: 4px;
}

.byline {
    margin: 20px 0 0;
    color: var(--text-muted);
    font-size: 0.92rem;
}

.hero-actions,
.cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
}

.button-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 18px;
    border-radius: 9px;
    background: var(--brand);
    color: #ffffff;
    font-weight: 750;
    text-decoration: none;
}

.button-link:hover {
    background: var(--brand-dark);
    color: #ffffff;
}

.button-link--secondary {
    background: var(--surface);
    color: var(--brand);
    border: 1px solid var(--brand);
}

.button-link--secondary:hover {
    background: var(--surface-muted);
    color: var(--brand-dark);
}

.content-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 28px;
    align-items: start;
}

.content-stack {
    display: grid;
    min-width: 0;
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
}

.content-card {
    padding: clamp(24px, 4vw, 42px);
}

.content-card > :first-child {
    margin-top: 0;
}

.content-card > :last-child {
    margin-bottom: 0;
}

.side-card {
    position: sticky;
    top: 20px;
    padding: 22px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
}

.side-card h2 {
    font-size: 1rem;
}

.side-card ul {
    margin: 0;
    padding-left: 20px;
}

.side-card li + li {
    margin-top: 9px;
}