:root {
    --blog-accent: #1e90ff;
    --blog-accent-dark: #136fc5;
    --blog-text: #17191c;
    --blog-muted: #656b73;
    --blog-border: #e2e5e9;
    --blog-surface: #f4f6f8;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--blog-text);
    background: #fff;
    font-family: Roboto, Arial, sans-serif;
    line-height: 1.65;
}
a { color: var(--blog-accent-dark); }
img { max-width: 100%; height: auto; }

.blog-site-header {
    border-bottom: 1px solid #303338;
    background: #17191c;
}
.blog-site-header__inner,
.blog-shell,
.blog-site-footer__inner {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
}
.blog-site-header__inner {
    min-height: 92px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.blog-brand {
    display: flex;
    align-items: center;
    gap: 14px;
    color: #fff;
    text-decoration: none;
    font-family: Roboto, Arial, sans-serif;
    font-size: 18px;
    line-height: 1.25;
}
.blog-brand img { width: 62px; max-height: 68px; object-fit: contain; }
.blog-nav { display: flex; gap: 18px; align-items: center; }
.blog-nav a { color: #fff; text-decoration: none; font-weight: 500; }
.blog-nav a:hover { color: var(--blog-accent); }

.blog-shell { padding: 54px 0 72px; }
.blog-hero { max-width: 780px; margin-bottom: 38px; }
.blog-kicker {
    margin: 0 0 8px;
    color: var(--blog-accent-dark);
    font-weight: 800;
    letter-spacing: .06em;
    text-transform: uppercase;
    font-size: 13px;
}
.blog-hero h1,
.blog-article h1 {
    margin: 0;
    font-family: Roboto, Arial, sans-serif;
    font-weight: 700;
    line-height: 1.17;
}
.blog-hero h1 { font-size: clamp(38px, 7vw, 62px); }
.blog-hero p { color: var(--blog-muted); font-size: 18px; }

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}
.blog-card {
    overflow: hidden;
    border: 1px solid var(--blog-border);
    border-radius: 14px;
    background: #fff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .07);
}
.blog-card__image {
    display: block;
    aspect-ratio: 16 / 9;
    background: var(--blog-surface);
    overflow: hidden;
}
.blog-card__image img { width: 100%; height: 100%; object-fit: cover; }
.blog-card__body { padding: 22px; }
.blog-card__date { color: var(--blog-muted); font-size: 13px; }
.blog-card h2 { margin: 8px 0 12px; font-size: 22px; line-height: 1.3; }
.blog-card h2 a { color: var(--blog-text); text-decoration: none; }
.blog-card p { margin: 0; color: var(--blog-muted); }
.blog-empty { padding: 28px; border-radius: 12px; background: var(--blog-surface); }

.blog-article { max-width: 820px; margin: 0 auto; }
.blog-article__header { margin-bottom: 34px; }
.blog-article h1 { font-size: clamp(34px, 6vw, 54px); }
.blog-article__meta { margin-top: 14px; color: var(--blog-muted); }
.blog-article__cover { width: 100%; margin: 26px 0 38px; border-radius: 14px; }
.blog-article__content { font-size: 17px; }
.blog-article__content h2,
.blog-article__content h3 { line-height: 1.3; margin-top: 38px; }
.blog-article__content h2 { font-size: 30px; }
.blog-article__content h3 { font-size: 23px; }
.blog-article__content p,
.blog-article__content ul,
.blog-article__content ol { margin: 0 0 20px; }
.blog-article__content blockquote {
    margin: 28px 0;
    padding: 18px 22px;
    border-left: 4px solid var(--blog-accent);
    background: var(--blog-surface);
}
.blog-article__content table { width: 100%; border-collapse: collapse; margin: 24px 0; }
.blog-article__content th,
.blog-article__content td { padding: 10px; border: 1px solid var(--blog-border); }
.blog-article__content .optiai-article-image { max-width: 100% !important; margin: 30px 0 !important; }

.blog-site-footer { padding: 32px 0; color: #fff; background: #17191c; }
.blog-site-footer__inner { display: flex; justify-content: space-between; gap: 20px; }
.blog-site-footer a { color: #fff; }

@media (max-width: 860px) {
    .blog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 620px) {
    .blog-site-header__inner { padding: 14px 0; align-items: flex-start; }
    .blog-brand span { display: none; }
    .blog-nav { flex-wrap: wrap; justify-content: flex-end; gap: 8px 14px; font-size: 14px; }
    .blog-grid { grid-template-columns: 1fr; }
    .blog-shell { padding-top: 36px; }
    .blog-site-footer__inner { flex-direction: column; }
}