/* DSSS Insights — design system
   Tokens: bg #070B14 · surface #131B2E · primary #6B7CFF · accent #2DD4A8
   Type: system stack + mono meta · measure ~720px · hairline editorial blocks */

:root {
  --bg: #070B14;
  --surface: #131B2E;
  --surface-2: #0C1322;
  --primary: #6B7CFF;
  --primary-hover: #8B99FF;
  --accent: #2DD4A8;
  --text: #F0F4FF;
  --muted: #9AA8C7;
  --border: rgba(154, 168, 199, 0.14);
  --border-strong: rgba(154, 168, 199, 0.28);
  --focus: #2DD4A8;
  --danger: #FF6B8A;

  --font-sans: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "Cascadia Code", "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;

  --text-xs: 0.8125rem;
  --text-sm: 0.875rem;
  --text-base: 1.0625rem;
  --text-lg: 1.1875rem;
  --text-xl: 1.375rem;
  --text-2xl: 1.75rem;
  --text-3xl: 2.25rem;
  --text-4xl: 2.75rem;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --measure: 42rem;
  --shell: 70rem;
  --header-h: 4rem;
  --transition: 160ms ease;
}

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

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

@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;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--primary);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  transition: color var(--transition);
}

a:hover {
  color: var(--primary-hover);
}

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

h1, h2, h3, h4 {
  line-height: 1.2;
  font-weight: 650;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 0 0 var(--space-4);
}

h1 { font-size: clamp(1.85rem, 4vw, var(--text-3xl)); }
h2 { font-size: clamp(1.35rem, 2.5vw, var(--text-2xl)); }
h3 { font-size: clamp(1.15rem, 2vw, var(--text-xl)); }
h4 { font-size: var(--text-lg); }

p {
  margin: 0 0 var(--space-4);
}

ul, ol {
  margin: 0 0 var(--space-4);
  padding-left: 1.25rem;
}

li + li {
  margin-top: 0.35rem;
}

code, kbd, pre {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

code {
  background: rgba(107, 124, 255, 0.12);
  color: var(--primary-hover);
  padding: 0.12em 0.4em;
  border-radius: 4px;
}

pre {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
  overflow-x: auto;
  margin: 0 0 var(--space-5);
}

pre code {
  background: none;
  color: var(--text);
  padding: 0;
}

blockquote {
  margin: 0 0 var(--space-5);
  padding: var(--space-3) var(--space-4);
  border-left: 3px solid var(--accent);
  background: rgba(45, 212, 168, 0.06);
  color: var(--muted);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: var(--space-6) 0;
}

/* Layout shell */
.shell {
  width: min(100% - 2rem, var(--shell));
  margin-inline: auto;
}

.measure {
  width: min(100%, var(--measure));
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -3rem;
  z-index: 1000;
  background: var(--accent);
  color: var(--bg);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
}

.skip-link:focus {
  top: var(--space-3);
  color: var(--bg);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 11, 20, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.brand:hover {
  color: var(--text);
}

.brand img {
  width: 2rem;
  height: 2rem;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-size: 1.05rem;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 0.55rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: color var(--transition), background var(--transition);
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--text);
  background: rgba(107, 124, 255, 0.12);
}

.nav a[aria-current="page"] {
  box-shadow: inset 0 -2px 0 var(--primary);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  padding: 0;
}

.nav-toggle-bars {
  display: block;
  width: 1.15rem;
  height: 1.5px;
  background: currentColor;
  position: relative;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 100%;
  background: currentColor;
}

.nav-toggle-bars::before { top: -5px; }
.nav-toggle-bars::after { top: 5px; }

/* Hero */
.hero {
  padding: var(--space-7) 0 var(--space-6);
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(ellipse 60% 80% at 15% 0%, rgba(107, 124, 255, 0.14), transparent 55%),
    radial-gradient(ellipse 40% 60% at 90% 20%, rgba(45, 212, 168, 0.08), transparent 50%);
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.hero-kicker::before {
  content: "";
  width: 1.25rem;
  height: 2px;
  background: var(--accent);
}

.hero h1 {
  max-width: 18ch;
  margin-bottom: var(--space-4);
}

.hero-lead {
  max-width: 38rem;
  font-size: var(--text-lg);
  color: var(--muted);
  margin-bottom: var(--space-5);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--muted);
}

.hero-meta strong {
  color: var(--text);
  font-weight: 600;
}

/* Ad slots */
.ad-slot {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 5.5rem;
  margin: var(--space-5) 0;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  background: rgba(19, 27, 46, 0.45);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.ad-slot--leaderboard {
  min-height: 5.625rem;
}

.ad-slot--rectangle {
  min-height: 15.625rem;
  width: 100%;
}

.ad-slot--inline {
  min-height: 8rem;
}

.ad-slot--footer {
  min-height: 5.625rem;
}

/* Section headers */
.section {
  padding: var(--space-7) 0;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.section-head h2 {
  margin: 0;
}

.section-link {
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

/* Category badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.22rem 0.65rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.badge:hover {
  text-decoration: none;
}

.badge-software {
  color: #A5B4FF;
  background: rgba(107, 124, 255, 0.14);
  border-color: rgba(107, 124, 255, 0.28);
}

.badge-cloud {
  color: #7DD3FC;
  background: rgba(56, 189, 248, 0.12);
  border-color: rgba(56, 189, 248, 0.28);
}

.badge-security {
  color: #F9A8D4;
  background: rgba(244, 114, 182, 0.12);
  border-color: rgba(244, 114, 182, 0.28);
}

.badge-automation {
  color: #FCD34D;
  background: rgba(252, 211, 77, 0.12);
  border-color: rgba(252, 211, 77, 0.28);
}

.badge-devops {
  color: var(--accent);
  background: rgba(45, 212, 168, 0.12);
  border-color: rgba(45, 212, 168, 0.28);
}

.badge-delivery {
  color: var(--accent);
  background: rgba(45, 212, 168, 0.14);
  border-color: rgba(45, 212, 168, 0.32);
}

/* Meta row — signature */
.meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem 0.85rem;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--muted);
}

.meta-row .dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--border-strong);
  flex-shrink: 0;
}

/* Article cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
  height: 100%;
}

.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.card:focus-within {
  border-color: var(--primary);
}

.card-media {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--surface-2), var(--surface));
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-media-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.55;
  background:
    linear-gradient(120deg, transparent 40%, rgba(107, 124, 255, 0.18) 40%, rgba(107, 124, 255, 0.18) 42%, transparent 42%),
    linear-gradient(30deg, transparent 55%, rgba(45, 212, 168, 0.12) 55%, rgba(45, 212, 168, 0.12) 57%, transparent 57%),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 18px,
      rgba(154, 168, 199, 0.05) 18px,
      rgba(154, 168, 199, 0.05) 19px
    );
}

.card-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  flex: 1;
}

.card-body h3 {
  margin: 0;
  font-size: var(--text-lg);
  line-height: 1.35;
}

.card-body h3 a {
  color: var(--text);
  text-decoration: none;
}

.card-body h3 a:hover {
  color: var(--primary-hover);
}

.card-excerpt {
  color: var(--muted);
  font-size: var(--text-sm);
  line-height: 1.6;
  margin: 0;
  flex: 1;
}

/* Featured card */
.featured {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-6);
}

.featured-media {
  min-height: 18rem;
  position: relative;
  background: linear-gradient(145deg, #1A2440, #0C1322 55%, #152038);
  border-right: 1px solid var(--border);
}

.featured-media .card-media-pattern {
  opacity: 0.75;
}

.featured-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-4);
  padding: clamp(1.5rem, 4vw, 2.75rem);
}

.featured-body h2 {
  margin: 0;
  font-size: clamp(1.45rem, 2.8vw, 2rem);
}

.featured-body h2 a {
  color: var(--text);
  text-decoration: none;
}

.featured-body h2 a:hover {
  color: var(--primary-hover);
}

.featured-excerpt {
  color: var(--muted);
  margin: 0;
  font-size: var(--text-base);
}

.featured-label {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.featured-label::before {
  content: "";
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(45, 212, 168, 0.18);
}

/* Home layout with sidebar */
.home-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 17.5rem;
  gap: var(--space-6);
  align-items: start;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  position: sticky;
  top: calc(var(--header-h) + 1rem);
}

.sidebar-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}

.sidebar-panel h2 {
  font-size: var(--text-sm);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 var(--space-4);
  font-weight: 600;
}

.category-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.category-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  color: var(--text);
  text-decoration: none;
  padding: 0.55rem 0.7rem;
  border-radius: var(--radius-sm);
  border-left: 3px solid transparent;
  font-size: var(--text-sm);
  transition: background var(--transition), border-color var(--transition);
}

.category-list a:hover {
  background: rgba(107, 124, 255, 0.1);
  color: var(--text);
}

.category-list a[data-cat="software"] { border-left-color: var(--primary); }
.category-list a[data-cat="cloud"] { border-left-color: #38BDF8; }
.category-list a[data-cat="security"] { border-left-color: #F472B6; }
.category-list a[data-cat="automation"] { border-left-color: #FCD34D; }
.category-list a[data-cat="devops"] { border-left-color: var(--accent); }

.category-list .count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
}

.popular-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: popular;
}

.popular-list li {
  counter-increment: popular;
  margin: 0;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1.6rem 1fr;
  gap: var(--space-2);
  align-items: start;
}

.popular-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.popular-list li:first-child {
  padding-top: 0;
}

.popular-list li::before {
  content: counter(popular, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent);
  padding-top: 0.15rem;
}

.popular-list a {
  color: var(--text);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 550;
  line-height: 1.45;
}

.popular-list a:hover {
  color: var(--primary-hover);
}

.popular-list .meta-row {
  margin-top: 0.35rem;
  font-size: 0.7rem;
}

/* Load more / pagination */
.load-more-wrap {
  display: flex;
  justify-content: center;
  margin-top: var(--space-6);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.btn:hover {
  background: rgba(107, 124, 255, 0.12);
  border-color: var(--primary);
  color: var(--text);
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #0A0E1A;
}

.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  color: #0A0E1A;
}

/* Article page */
.article-header {
  padding: var(--space-7) 0 var(--space-5);
  border-bottom: 1px solid var(--border);
}

.article-header h1 {
  max-width: 22ch;
  margin: var(--space-4) 0;
}

.article-byline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3) var(--space-5);
  color: var(--muted);
  font-size: var(--text-sm);
}

.author {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  font-weight: 550;
}

.author-avatar {
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--bg);
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 15rem;
  gap: var(--space-6);
  align-items: start;
  padding: var(--space-6) 0 var(--space-8);
}

.article-content {
  max-width: var(--measure);
  font-size: 1.08rem;
  line-height: 1.75;
}

.article-content h2 {
  margin-top: var(--space-7);
  padding-top: var(--space-2);
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

.article-content h3 {
  margin-top: var(--space-5);
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

.article-content img {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin: var(--space-5) 0;
}

.article-content a {
  text-decoration: underline;
}

.article-content > p:first-child {
  font-size: 1.15rem;
  color: var(--text);
}

.article-aside {
  position: sticky;
  top: calc(var(--header-h) + 1rem);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.toc-panel,
.share-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.toc-panel h2,
.share-panel h2 {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 var(--space-3);
  font-weight: 600;
}

.toc {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.toc a {
  display: block;
  color: var(--muted);
  text-decoration: none;
  font-size: var(--text-xs);
  line-height: 1.45;
  padding: 0.25rem 0;
  border-left: 2px solid transparent;
  padding-left: 0.65rem;
}

.toc a:hover,
.toc a.is-active {
  color: var(--text);
  border-left-color: var(--accent);
}

.toc .toc-h3 a {
  padding-left: 1.15rem;
  opacity: 0.9;
}

.share-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.5rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 550;
  background: transparent;
  transition: background var(--transition), border-color var(--transition);
}

.share-btn:hover {
  background: rgba(107, 124, 255, 0.12);
  border-color: var(--primary);
  color: var(--text);
}

/* Related articles */
.related {
  border-top: 1px solid var(--border);
  padding: var(--space-7) 0;
}

/* Page headers for static pages */
.page-header {
  padding: var(--space-7) 0 var(--space-5);
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(ellipse 50% 80% at 80% 0%, rgba(107, 124, 255, 0.12), transparent 55%);
}

.page-header h1 {
  margin-bottom: var(--space-3);
}

.page-header p {
  max-width: 40rem;
  color: var(--muted);
  font-size: var(--text-lg);
  margin: 0;
}

.prose {
  max-width: var(--measure);
  padding: var(--space-6) 0 var(--space-8);
}

.prose h2 {
  margin-top: var(--space-6);
}

.prose h3 {
  margin-top: var(--space-5);
}

.prose ul {
  color: var(--muted);
}

.prose strong {
  color: var(--text);
}

.legal-updated {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--muted);
  margin-bottom: var(--space-5);
}

/* Archive / category filters */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: var(--space-5) 0 var(--space-6);
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 550;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.filter-chip:hover,
.filter-chip.is-active {
  color: var(--text);
  border-color: var(--primary);
  background: rgba(107, 124, 255, 0.12);
}

.archive-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.archive-item {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: var(--space-4);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--border);
}

.archive-date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--muted);
  padding-top: 0.25rem;
}

.archive-item h3 {
  margin: 0 0 var(--space-2);
  font-size: var(--text-lg);
}

.archive-item h3 a {
  color: var(--text);
  text-decoration: none;
}

.archive-item h3 a:hover {
  color: var(--primary-hover);
}

.archive-item p {
  color: var(--muted);
  font-size: var(--text-sm);
  margin: 0 0 var(--space-3);
}

/* Contact */
.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  max-width: 32rem;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  color: var(--accent);
  text-decoration: none;
  margin: var(--space-3) 0 var(--space-4);
}

.contact-email:hover {
  color: var(--primary-hover);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface-2);
  padding: var(--space-7) 0 var(--space-6);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-brand p {
  color: var(--muted);
  font-size: var(--text-sm);
  margin: 0;
  max-width: 22rem;
}

.footer-col h2 {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 var(--space-3);
  font-weight: 600;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.footer-col a {
  color: var(--muted);
  text-decoration: none;
  font-size: var(--text-sm);
}

.footer-col a:hover {
  color: var(--text);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: var(--text-xs);
}

.footer-bottom a {
  color: var(--muted);
  text-decoration: none;
}

.footer-bottom a:hover {
  color: var(--accent);
}

.visit-link {
  font-weight: 600;
}

/* Utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-muted {
  color: var(--muted);
}

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* Responsive */
@media (max-width: 960px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .home-layout,
  .article-layout {
    grid-template-columns: 1fr;
  }

  .sidebar,
  .article-aside {
    position: static;
  }

  .featured {
    grid-template-columns: 1fr;
  }

  .featured-media {
    min-height: 14rem;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .article-aside {
    order: -1;
  }

  .toc-panel {
    max-height: 16rem;
    overflow: auto;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
    padding: var(--space-4);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    padding: 0.85rem 1rem;
    min-height: 2.75rem;
    display: flex;
    align-items: center;
  }

  .site-header {
    position: sticky;
  }

  .header-inner {
    position: relative;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .archive-item {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }

  .hero {
    padding: var(--space-6) 0 var(--space-5);
  }

  .section {
    padding: var(--space-6) 0;
  }

  .section-head {
    flex-direction: column;
    align-items: start;
  }
}

@media (max-width: 420px) {
  .shell {
    width: min(100% - 1.25rem, var(--shell));
  }

  .card-body {
    padding: var(--space-4);
  }

  .hero-meta {
    flex-direction: column;
    gap: var(--space-2);
  }
}