:root {
    --navy: #16263b;
    --navy-2: #1f3550;
    --blue: #2d6cb5;
    --blue-dark: #1f548f;
    --blue-soft: #dbe7f5;
    --blue-tint: #eef4fb;
    --grey-50: #f3f5f8;
    --grey-100: #e8ecf1;
    --grey-200: #d4dbe4;
    --grey-400: #8a96a6;
    --grey-600: #56616f;
    --text: #1d2733;
    --surface: #ffffff;
    --radius: 12px;
    --shadow: 0 1px 2px rgba(22, 38, 59, .06), 0 6px 20px rgba(22, 38, 59, .07);
}

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

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    background: var(--grey-50);
    color: var(--text);
    font: 400 17px/1.7 Inter, "Segoe UI", Roboto, Arial, sans-serif;
}

img { max-width: 100%; }

a { color: var(--blue); }
a:hover { color: var(--blue-dark); }
a:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; border-radius: 4px; }

.wrap { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 24px; }

.skip-link {
    position: absolute; left: 16px; top: -60px; z-index: 10;
    background: var(--blue); color: #fff; padding: 10px 16px; border-radius: 8px;
}
.skip-link:focus { top: 12px; color: #fff; }

/* Header */
.site-header { background: var(--navy); color: #fff; }

.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 72px; }

.logo { display: inline-flex; align-items: center; gap: 12px; color: #fff; text-decoration: none; font-size: 22px; letter-spacing: .2px; }
.logo:hover { color: #fff; }
.logo b { color: #8fb8e6; font-weight: 700; }
.logo-mark { flex: none; }

.lang-switch ul { display: flex; gap: 4px; margin: 0; padding: 4px; list-style: none; background: rgba(255, 255, 255, .08); border-radius: 10px; }
.lang-switch a {
    display: block; min-width: 44px; padding: 6px 10px; border-radius: 7px;
    color: #c8d4e3; font-size: 14px; font-weight: 600; text-align: center; text-decoration: none; letter-spacing: .5px;
}
.lang-switch a:hover { color: #fff; background: rgba(255, 255, 255, .12); }
.lang-switch a[aria-current] { background: var(--blue); color: #fff; }

.mainnav { background: var(--navy-2); border-top: 1px solid rgba(255, 255, 255, .06); }
.mainnav ul { display: flex; flex-wrap: wrap; gap: 4px 24px; margin: 0 auto; list-style: none; }
.mainnav a { display: block; padding: 12px 0; color: #c8d4e3; font-size: 15px; font-weight: 500; text-decoration: none; border-bottom: 2px solid transparent; }
.mainnav a:hover { color: #fff; }
.mainnav a[aria-current] { color: #fff; border-bottom-color: #8fb8e6; }

/* Layout */
.layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 40px;
    align-items: start;
    padding-top: 32px;
    padding-bottom: 56px;
}

.content { min-width: 0; }

.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 16px; padding: 0; list-style: none; font-size: 14px; color: var(--grey-600); }
.breadcrumbs li + li::before { content: "/"; margin-right: 6px; color: var(--grey-400); }
.breadcrumbs a { color: var(--blue); text-decoration: none; }

/* Article */
.post { background: var(--surface); border: 1px solid var(--grey-200); border-radius: var(--radius); box-shadow: var(--shadow); padding: 40px 48px 48px; }

.kicker, .card-kicker { margin: 0 0 10px; color: var(--blue); font-size: 13px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }

.post h1 { margin: 0 0 16px; font: 700 clamp(28px, 3.4vw, 40px)/1.2 "PT Serif", Georgia, serif; color: var(--navy); overflow-wrap: break-word; }

.meta { display: flex; flex-wrap: wrap; gap: 6px 20px; margin: 0 0 28px; padding-bottom: 20px; border-bottom: 1px solid var(--grey-100); color: var(--grey-600); font-size: 14px; }

.post-body h2 { margin: 44px 0 16px; font: 700 clamp(22px, 2.4vw, 28px)/1.3 "PT Serif", Georgia, serif; color: var(--navy); }
.post-body p { margin: 0 0 18px; }
.post-body ul { margin: 0 0 24px; padding: 0; list-style: none; }
.post-body li { position: relative; margin: 0 0 12px; padding: 14px 18px 14px 44px; background: var(--grey-50); border: 1px solid var(--grey-100); border-radius: 10px; }
.post-body li::before { content: ""; position: absolute; left: 18px; top: 24px; width: 10px; height: 10px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 4px var(--blue-soft); }
.post-body strong { color: var(--navy); }

.post-body blockquote {
    margin: 28px 0; padding: 22px 26px;
    background: var(--blue-tint); border-left: 4px solid var(--blue); border-radius: 0 10px 10px 0;
    color: var(--navy-2); font: italic 400 19px/1.6 "PT Serif", Georgia, serif;
}
.post-body blockquote p { margin: 0; }

/* Framed images: fixed 16:9 box, image centered and never stretched */
.frame { margin: 28px 0; padding: 10px; background: var(--surface); border: 1px solid var(--grey-200); border-radius: var(--radius); box-shadow: var(--shadow); }
.frame img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; object-position: center; border-radius: 8px; background: var(--grey-100); }
.frame figcaption { padding: 10px 4px 2px; color: var(--grey-600); font-size: 14px; line-height: 1.5; text-align: center; }
.frame--hero { margin-top: 0; }

/* Sidebar */
.sidebar { display: flex; flex-direction: column; gap: 20px; position: sticky; top: 20px; }
.sidebar-title { margin: 0; padding: 0 0 10px; border-bottom: 2px solid var(--blue); font: 700 20px/1.3 "PT Serif", Georgia, serif; color: var(--navy); }

.card { position: relative; display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--grey-200); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; transition: transform .2s, box-shadow .2s, border-color .2s; }
.card:hover { transform: translateY(-2px); border-color: #a9c3e2; box-shadow: 0 2px 4px rgba(22, 38, 59, .08), 0 12px 28px rgba(22, 38, 59, .12); }
.card-media { padding: 8px 8px 0; }
.card-media img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; object-position: center; border-radius: 8px; background: var(--grey-100); }
.card-body { padding: 14px 18px 18px; }
.card-kicker { margin-bottom: 6px; font-size: 11px; }
.card h3 { margin: 0 0 8px; font: 700 17px/1.35 "PT Serif", Georgia, serif; }
.card h3 a { color: var(--navy); text-decoration: none; }
.card h3 a::after { content: ""; position: absolute; inset: 0; }
.card:hover h3 a { color: var(--blue); }
.card p { margin: 0 0 10px; color: var(--grey-600); font-size: 14px; line-height: 1.55; }
.card-more { color: var(--blue); font-size: 14px; font-weight: 600; }

/* Footer */
.site-footer { background: var(--navy); color: #c8d4e3; }
.footer-top { background: var(--navy-2); }
.footer-top-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px 32px; padding-top: 20px; padding-bottom: 20px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 22px; margin: 0; padding: 0; list-style: none; }
.footer-nav a { color: #c8d4e3; font-size: 15px; text-decoration: none; }
.footer-nav a:hover, .footer-nav a[aria-current] { color: #fff; }
.footer-lang { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.footer-bottom { padding: 28px 0 32px; font-size: 14px; line-height: 1.65; }
.footer-bottom p { max-width: 860px; margin: 0 0 10px; }
.copyright { margin-top: 18px !important; color: var(--grey-400); }

/* Responsive */
@media (max-width: 1080px) {
    .layout { grid-template-columns: minmax(0, 1fr) 300px; gap: 28px; }
    .post { padding: 32px; }
}

@media (max-width: 900px) {
    .layout { grid-template-columns: 1fr; }
    .sidebar { position: static; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .sidebar-title { grid-column: 1 / -1; }
}

@media (max-width: 600px) {
    body { font-size: 16px; }
    .wrap { padding: 0 16px; }
    .topbar { min-height: 64px; }
    .logo { font-size: 19px; gap: 10px; }
    .logo-mark { width: 30px; height: 30px; }
    .lang-switch a { min-width: 38px; padding: 5px 8px; font-size: 13px; }
    .mainnav ul { gap: 0 16px; }
    .mainnav a { padding: 9px 0; font-size: 14px; }
    .layout { padding-top: 20px; }
    .post { padding: 22px 16px 28px; }
    .frame { padding: 6px; margin: 22px 0; }
    .post-body li { padding: 12px 14px 12px 38px; }
    .post-body li::before { left: 15px; top: 21px; }
    .post-body blockquote { padding: 18px; font-size: 17px; }
    .sidebar { grid-template-columns: 1fr; }
    .footer-top-inner { flex-direction: column; align-items: flex-start; }
}