:root {
  --ink: #0A1628;
  --ink-deep: #050B16;
  --steel: #1B2B4B;
  --paper: #F5F7FA;
  --paper-dim: #E8EDF3;
  --accent: #3B82F6;
  --accent-dim: #1E40AF;
  --accent-ink: #1E40AF;
  --muted: #8B9DC3;
  --muted-dark: #7A8FB5;
  --line-d: rgba(139, 157, 195, 0.18);
  --line-d-strong: rgba(139, 157, 195, 0.32);

  --font-sans: 'Inter', -apple-system, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --font-serif: 'Fraunces', Georgia, serif;

  --pad-x: clamp(24px, 6vw, 120px);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--ink-deep); color: var(--paper); font-family: var(--font-sans); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
body { overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.skip-link {
  position: fixed; left: 16px; top: 16px; z-index: 1000;
  transform: translateY(-140%);
  background: var(--paper); color: var(--ink);
  padding: 12px 16px; border: 1px solid var(--ink);
  transition: transform 160ms ease;
}
.skip-link:focus { transform: translateY(0); }

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ── Nav (matches main site) ─────────────── */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px var(--pad-x);
  font-family: var(--font-mono); font-size: 13px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted);
  background: rgba(5,11,22,0.78);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-d);
}
.site-nav .brand img { height: 44px; width: auto; display: block; }
.site-nav .links { display: flex; gap: 36px; align-items: center; }
.site-nav .links a { transition: color 180ms; }
.site-nav .links a:hover { color: var(--accent); }
.site-nav .links a.active { color: var(--paper); }
.site-nav .cta {
  padding: 10px 18px; border: 1px solid var(--line-d-strong); color: var(--paper);
  transition: background 180ms, color 180ms, border-color 180ms;
}
.site-nav .cta:hover { background: var(--accent-dim); border-color: var(--accent-dim); }
.lang-switch {
  font-size: 11px; letter-spacing: 0.12em; padding: 4px 10px;
  border: 1px solid currentColor; color: var(--paper-dim); transition: color 150ms, border-color 150ms;
}
.lang-switch:hover { color: var(--paper); }
.mobile-nav-toggle {
  display: none;
  width: 48px; height: 48px; padding: 0;
  border: 1px solid currentColor; background: transparent; color: inherit;
  align-items: center; justify-content: center; flex-direction: column; gap: 5px;
}
.mobile-nav-toggle span { width: 18px; height: 1px; background: currentColor; transition: transform 180ms ease, opacity 180ms ease; }
.site-nav.menu-open .mobile-nav-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.site-nav.menu-open .mobile-nav-toggle span:nth-child(2) { opacity: 0; }
.site-nav.menu-open .mobile-nav-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.mobile-menu {
  display: none;
  position: absolute;
  top: calc(100% + 1px);
  left: 0;
  right: 0;
  padding: 12px var(--pad-x) 20px;
  background: rgba(5,11,22,0.96);
  border-bottom: 1px solid var(--line-d);
}
.mobile-menu a {
  display: block;
  padding: 14px 0;
  border-top: 1px solid var(--line-d);
}
.mobile-menu .cta,
.mobile-menu .lang-switch {
  margin-top: 12px;
  text-align: center;
}
.site-nav.menu-open .mobile-menu { display: block; }

/* ── Page hero ─────────────── */
.page-hero {
  padding: calc(var(--pad-x) * 0.8) var(--pad-x) 64px;
  padding-top: 180px;
  border-bottom: 1px solid var(--line-d);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(139,157,195,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139,157,195,0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse at 20% 50%, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 20% 50%, black 0%, transparent 70%);
}
.page-hero-inner { max-width: 1240px; margin: 0 auto; position: relative; }
.page-hero .eyebrow {
  font-family: var(--font-mono); font-size: 12px;
  letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 24px;
  display: flex; align-items: center; gap: 14px;
}
.page-hero .eyebrow::before {
  content: ''; width: 32px; height: 1px; background: var(--accent);
}
.page-hero h1 {
  font-size: clamp(48px, 7vw, 88px);
  font-weight: 700; letter-spacing: -0.025em; line-height: 0.95;
  margin: 0 0 28px;
}
.page-hero h1 em {
  font-family: var(--font-serif); font-style: italic; font-weight: 400;
  color: var(--muted);
}
.page-hero .lede {
  font-size: 19px; line-height: 1.55; color: var(--muted);
  max-width: 620px; font-weight: 300;
}
.page-hero .meta-row {
  margin-top: 48px; display: flex; gap: 48px;
  font-family: var(--font-mono); font-size: 12px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--muted-dark);
}
.page-hero .meta-row div { display: flex; flex-direction: column; gap: 6px; }
.page-hero .meta-row .val { color: var(--paper); font-size: 22px; letter-spacing: 0; text-transform: none; font-family: var(--font-sans); font-weight: 500; }

/* ── Featured strip (three-up) ─────────────── */
.featured-strip {
  padding: 80px var(--pad-x);
  border-bottom: 1px solid var(--line-d);
}
.featured-strip-inner { max-width: 1240px; margin: 0 auto; }
.featured-strip h2 {
  font-family: var(--font-mono); font-size: 12px;
  letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 32px;
  display: flex; align-items: center; gap: 14px;
}
.featured-strip h2::before, .featured-strip h2::after {
  content: ''; height: 1px; flex: 1; background: var(--line-d);
}
.featured-strip h2::after { max-width: 80%; }
.featured-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
}
@media (max-width: 960px) { .featured-grid { grid-template-columns: 1fr; } }

.feat-card {
  display: flex; flex-direction: column;
  border: 1px solid var(--line-d);
  background: linear-gradient(180deg, rgba(27,43,75,0.25) 0%, rgba(5,11,22,0) 100%);
  transition: transform 300ms ease, border-color 300ms, background 300ms;
  position: relative; overflow: hidden;
  min-height: 440px;
}
.feat-card::after {
  content: ''; position: absolute; inset: -1px; border: 1px solid transparent;
  background: linear-gradient(135deg, rgba(59,130,246,0) 0%, rgba(59,130,246,0.3) 50%, rgba(59,130,246,0) 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity 400ms;
  pointer-events: none;
}
.feat-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-d-strong);
}
.feat-card:hover::after { opacity: 1; }

.feat-card .tag {
  position: absolute; top: 20px; left: 20px; z-index: 2;
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 0.22em; text-transform: uppercase;
  padding: 6px 10px; background: rgba(5,11,22,0.85);
  border: 1px solid var(--line-d-strong); color: var(--accent);
  backdrop-filter: blur(6px);
}
.feat-card .visual {
  height: 200px; position: relative; overflow: hidden;
  border-bottom: 1px solid var(--line-d);
  background: var(--ink);
}
.feat-card .body {
  padding: 28px; flex: 1;
  display: flex; flex-direction: column; gap: 14px;
}
.feat-card .body h3 {
  font-size: 22px; font-weight: 600; letter-spacing: -0.015em;
  line-height: 1.25; margin: 0; text-wrap: balance;
}
.feat-card:hover .body h3 { color: var(--accent); transition: color 200ms; }
.feat-card .excerpt {
  font-size: 14px; line-height: 1.55; color: var(--muted); margin: 0;
  flex: 1;
}
.feat-card .meta {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted-dark);
  display: flex; gap: 14px; align-items: center;
  padding-top: 14px; border-top: 1px solid var(--line-d);
}
.feat-card .meta .sep { width: 2px; height: 2px; background: var(--muted-dark); border-radius: 50%; }

/* Variant: big hero card */
.feat-card.hero-card .visual { height: 280px; }
.feat-card.hero-card .body h3 { font-size: 32px; line-height: 1.15; }
.feat-card.hero-card { min-height: 520px; }

/* Label above card */
.feat-label {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.24em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 12px;
  display: flex; align-items: center; gap: 10px;
}
.feat-label .dot { width: 5px; height: 5px; background: var(--accent); border-radius: 50%; box-shadow: 0 0 8px var(--accent); }
.feat-label .num { color: var(--muted-dark); margin-left: auto; }

/* ── Archive list (chronological) ─────────────── */
.archive {
  padding: 100px var(--pad-x);
}
.archive-inner { max-width: 1240px; margin: 0 auto; }
.archive-head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 48px; padding-bottom: 20px;
  border-bottom: 1px solid var(--line-d);
}
.archive-head h2 {
  font-size: 32px; font-weight: 600; letter-spacing: -0.02em; margin: 0;
}
.archive-head .count {
  font-family: var(--font-mono); font-size: 12px;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted);
}

.archive-list { display: flex; flex-direction: column; }

.post-row {
  display: grid;
  grid-template-columns: 130px 1fr 220px 160px;
  gap: 48px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line-d);
  align-items: center;
  position: relative;
  transition: background 280ms;
}
.post-row::before {
  content: ''; position: absolute; left: -24px; right: -24px; top: 0; bottom: 0;
  background: linear-gradient(90deg, rgba(59,130,246,0.08) 0%, transparent 100%);
  opacity: 0; transition: opacity 280ms;
  pointer-events: none;
}
.post-row:hover::before { opacity: 1; }
.post-row:hover .post-title { color: var(--accent); }
.post-row:hover .arrow { transform: translateX(4px); color: var(--accent); }

.post-date {
  font-family: var(--font-mono); font-size: 12px;
  letter-spacing: 0.14em; color: var(--muted-dark);
  text-transform: uppercase;
  white-space: nowrap;
}
.post-date .year { color: var(--muted); display: block; font-size: 11px; margin-top: 2px; }

.post-main { position: relative; z-index: 1; }
.post-category {
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 8px;
  display: inline-block;
}
.post-title {
  font-size: 22px; font-weight: 500; letter-spacing: -0.01em;
  line-height: 1.3; margin: 0 0 8px; color: var(--paper);
  transition: color 220ms; text-wrap: balance;
}
.post-excerpt {
  font-size: 14px; line-height: 1.55; color: var(--muted); margin: 0;
  max-width: 620px;
}
.post-author {
  font-family: var(--font-mono); font-size: 12px;
  color: var(--muted); letter-spacing: 0.04em;
}
.post-author .role { color: var(--muted-dark); display: block; font-size: 11px; margin-top: 2px; text-transform: uppercase; letter-spacing: 0.18em; }
.post-read {
  display: flex; align-items: center; justify-content: flex-end; gap: 14px;
  font-family: var(--font-mono); font-size: 12px;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted);
}
.arrow {
  width: 28px; height: 1px; background: var(--muted);
  position: relative; transition: transform 240ms, background 240ms, color 240ms;
  color: var(--muted);
}
.arrow::after {
  content: ''; position: absolute; right: 0; top: -4px;
  width: 10px; height: 10px;
  border-right: 1px solid currentColor;
  border-top: 1px solid currentColor;
  transform: rotate(45deg);
}
.post-row:hover .arrow { background: var(--accent); }

@media (max-width: 960px) {
  .post-row { grid-template-columns: 1fr; gap: 8px; padding: 24px 0; }
  .post-read { justify-content: flex-start; }
}

/* ── Visuals (per-card procedural) ─────────── */
.v-ai {
  background:
    radial-gradient(ellipse at 30% 50%, rgba(59,130,246,0.25) 0%, transparent 60%),
    var(--ink);
  position: relative;
}
.v-threat {
  background: linear-gradient(135deg, #1a0a0f 0%, #050B16 100%);
  position: relative;
}
.v-case {
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-deep) 100%);
}
.v-policy {
  background: var(--ink);
}
.v-eng {
  background: var(--ink-deep);
}

/* ── CTA footer strip ─────── */
.cta-strip {
  padding: 80px var(--pad-x);
  border-top: 1px solid var(--line-d);
  text-align: center;
}
.cta-strip h3 {
  font-size: 32px; font-weight: 600; letter-spacing: -0.02em;
  margin: 0 0 16px;
}
.cta-strip p {
  color: var(--muted); font-size: 16px; max-width: 560px;
  margin: 0 auto 32px; line-height: 1.55;
}
.cta-strip .cta-actions {
  display: flex;
  justify-content: center;
}
.cta-strip .subscribe-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 14px 24px;
  border: 1px solid var(--accent);
  background: var(--accent-dim);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  transition: background 180ms, border-color 180ms;
}
.cta-strip .subscribe-link:hover { background: var(--accent-ink); border-color: var(--accent-ink); }

/* ── Footer ─────── */
.site-footer {
  padding: 64px var(--pad-x) 40px;
  border-top: 1px solid var(--line-d);
  background: var(--ink-deep);
}
.footer-inner { max-width: 1240px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; gap: 32px; flex-wrap: wrap; }
.footer-inner img { height: 40px; }
.footer-inner .legal {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--muted-dark);
}

/* hover-lift utility used on visuals */
.parallax-wrap { position: relative; overflow: hidden; }
.parallax-wrap .parallax-layer { transition: transform 400ms cubic-bezier(.2,.7,.3,1); }
.feat-card:hover .parallax-layer.slow { transform: translate3d(-6px, -4px, 0) scale(1.03); }
.feat-card:hover .parallax-layer.fast { transform: translate3d(8px, 6px, 0) scale(1.05); }

@media (max-width: 820px) {
  .mobile-nav-toggle { display: inline-flex; }
  .site-nav .links { display: none; }
  .page-hero .meta-row { flex-wrap: wrap; gap: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .feat-card:hover,
  .feat-card:hover .parallax-layer.slow,
  .feat-card:hover .parallax-layer.fast,
  .post-row:hover .arrow { transform: none; }
}