/* ═══════════════════════════════════════════════════════════
   CLOUDFORCE BLOG — Design System v1
   Typeface: Lora (serif display) + Source Sans 3 (body)
   Palette:  Salesforce Navy · Sky Blue · Warm Parchment
   ═══════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,600;0,700;1,400;1,600&family=Source+Sans+3:ital,wght@0,300;0,400;0,600;0,700;1,400&family=Source+Code+Pro:wght@400;500&display=swap');

/* ── TOKENS ───────────────────────────────────────────────── */
:root {
  /* Salesforce brand */
  --sf-navy:     #032D60;
  --sf-blue:     #0070D2;
  --sf-sky:      #00A1E0;
  --sf-orange:   #E8650A;
  --sf-green:    #2E844A;

  /* Reading surface — warm parchment, never pure white */
  --bg:          #F8F6F2;       /* body / page */
  --bg-card:     #FDFCFA;       /* article cards */
  --bg-code:     #F0EEE9;       /* inline code bg */
  --bg-callout:  #EDF4FB;       /* tip / note boxes */

  /* Typography — warm dark, not pure black */
  --ink:         #1A2332;       /* headings */
  --body:        #374151;       /* body text */
  --muted:       #6B7C93;       /* meta, captions */
  --subtle:      #9BADBF;       /* dividers, placeholders */
  --link:        #0057A3;       /* body links */
  --link-hover:  #003D73;

  /* Borders */
  --border:      #DDD9D2;
  --border-dark: #B8B3AB;

  /* Shadows — warm tinted */
  --shadow-xs:   0 1px 3px rgba(26,35,50,0.07);
  --shadow-sm:   0 2px 10px rgba(26,35,50,0.09);
  --shadow-md:   0 6px 24px rgba(26,35,50,0.12);
  --shadow-lg:   0 16px 56px rgba(26,35,50,0.16);

  /* Layout */
  --max-w:       1160px;
  --content-w:   720px;         /* comfortable reading width */
  --radius-sm:   5px;
  --radius:      10px;
  --radius-lg:   16px;

  /* Type scale */
  --text-xs:     0.75rem;
  --text-sm:     0.875rem;
  --text-base:   1rem;
  --text-lg:     1.125rem;
  --text-xl:     1.25rem;
  --text-2xl:    1.5rem;
  --text-3xl:    1.875rem;
  --text-4xl:    2.25rem;
  --text-5xl:    3rem;

  /* Transitions */
  --t:           0.18s ease;
}

/* ── RESET & BASE ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Source Sans 3', 'Georgia', serif;
  font-weight: 400;
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── TYPOGRAPHY ───────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Lora', 'Georgia', serif;
  color: var(--ink);
  line-height: 1.25;
  font-weight: 700;
}
h1 { font-size: clamp(1.9rem, 4vw, var(--text-5xl)); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.45rem, 3vw, var(--text-4xl)); letter-spacing: -0.015em; }
h3 { font-size: clamp(1.2rem, 2.5vw, var(--text-3xl)); }
h4 { font-size: var(--text-xl); font-weight: 600; }
h5 { font-size: var(--text-lg); font-weight: 600; }

p { margin-bottom: 1.4em; color: var(--body); }
p:last-child { margin-bottom: 0; }

a { color: var(--link); text-decoration: none; transition: color var(--t); }
a:hover { color: var(--link-hover); }

ul, ol { padding-left: 1.5em; margin-bottom: 1.4em; }
li { margin-bottom: 0.35em; line-height: 1.75; }

strong, b { font-weight: 700; color: var(--ink); }
em, i { font-style: italic; }

code {
  font-family: 'Source Code Pro', 'Courier New', monospace;
  font-size: 0.875em;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.1em 0.4em;
  color: var(--sf-navy);
}

pre {
  font-family: 'Source Code Pro', monospace;
  font-size: var(--text-sm);
  background: #1A2332;
  color: #E2E8F0;
  border-radius: var(--radius);
  padding: 1.5em;
  overflow-x: auto;
  line-height: 1.65;
  margin-bottom: 1.6em;
}
pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

blockquote {
  border-left: 4px solid var(--sf-sky);
  padding: 0.8em 1.4em;
  margin: 1.6em 0;
  background: var(--bg-callout);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
blockquote p { color: var(--ink); font-style: italic; margin: 0; }

img { max-width: 100%; height: auto; display: block; }
hr { border: none; border-top: 1px solid var(--border); margin: 2.5em 0; }

/* ── LAYOUT UTILITIES ─────────────────────────────────────── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; }
.container-narrow { max-width: var(--content-w); margin: 0 auto; padding: 0 2rem; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }

/* ── BADGE / TAG ──────────────────────────────────────────── */
.tag {
  display: inline-block;
  font-family: 'Source Sans 3', sans-serif;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.28em 0.75em;
  border-radius: 3px;
  line-height: 1;
  text-decoration: none;
  transition: background var(--t), color var(--t);
}
.tag-blue  { background: #DCEEFA; color: var(--sf-blue); }
.tag-navy  { background: #D4E0F0; color: var(--sf-navy); }
.tag-orange{ background: #FDEBD9; color: var(--sf-orange); }
.tag-green { background: #D4EDDA; color: var(--sf-green); }
.tag-sky   { background: #D4F0FB; color: #006E9E; }

.tag-blue:hover  { background: var(--sf-blue);  color: #fff; }
.tag-navy:hover  { background: var(--sf-navy);  color: #fff; }
.tag-orange:hover{ background: var(--sf-orange);color: #fff; }
.tag-green:hover { background: var(--sf-green); color: #fff; }
.tag-sky:hover   { background: var(--sf-sky);   color: #fff; }

/* ── BUTTONS ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-family: 'Source Sans 3', sans-serif;
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  padding: 0.65em 1.5em;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--t);
  white-space: nowrap;
}
.btn-primary {
  background: var(--sf-blue);
  color: #fff;
  border-color: var(--sf-blue);
}
.btn-primary:hover {
  background: var(--sf-navy);
  border-color: var(--sf-navy);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}
.btn-outline {
  background: transparent;
  color: var(--sf-blue);
  border-color: var(--sf-blue);
}
.btn-outline:hover {
  background: var(--sf-blue);
  color: #fff;
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--muted);
  border-color: var(--border);
}
.btn-ghost:hover {
  background: var(--bg-code);
  color: var(--ink);
  border-color: var(--border-dark);
}
.btn-sm { padding: 0.4em 1em; font-size: var(--text-xs); }

/* ══════════════════════════════════════════════════════════
   SITE HEADER
   ══════════════════════════════════════════════════════════ */
.site-header {
  background: var(--sf-navy);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 3px solid var(--sf-sky);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 2rem;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}
.logo-image {
  display: block;
  width: clamp(150px, 17vw, 210px);
  height: auto;
}

/* Main nav */
.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-nav a {
  display: block;
  font-family: 'Source Sans 3', sans-serif;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.72);
  padding: 0.45em 0.85em;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background var(--t), color var(--t);
  position: relative;
}
.site-nav a:hover,
.site-nav a.active {
  background: rgba(0,161,224,0.20);
  color: #fff;
}
.site-nav a.current-page {
  color: #fff;
}
.site-nav a.current-page::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0.85em;
  right: 0.85em;
  height: 2px;
  background: var(--sf-sky);
  border-radius: 2px;
}

/* Dropdown */
.nav-item { position: relative; list-style: none; }
.nav-item .dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 0.3em;
  cursor: pointer;
}
.nav-item .dropdown-toggle svg {
  width: 12px; height: 12px;
  transition: transform var(--t);
}
.nav-item:hover .dropdown-toggle svg { transform: rotate(180deg); }

.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--sf-navy);
  border: 1px solid rgba(0,161,224,0.25);
  border-top: 2px solid var(--sf-sky);
  border-radius: 0 0 var(--radius) var(--radius);
  min-width: 210px;
  box-shadow: var(--shadow-lg);
  list-style: none;
  padding: 0.4em 0;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px);
  transition: opacity var(--t), transform var(--t);
  z-index: 200;
}
.nav-item:hover .dropdown-menu,
.nav-item:focus-within .dropdown-menu {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}
.dropdown-menu li a {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(190,220,255,0.80);
  padding: 0.65em 1.3em;
  border-radius: 0;
  transition: background var(--t), color var(--t);
}
.dropdown-menu li a:hover {
  background: rgba(0,161,224,0.18);
  color: #fff;
}
.dropdown-menu li + li { border-top: 1px solid rgba(255,255,255,0.06); }

/* Search button in header */
.header-search {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.search-btn {
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.18);
  color: rgba(255,255,255,0.72);
  padding: 0.4em 0.9em;
  border-radius: var(--radius-sm);
  font-family: 'Source Sans 3', sans-serif;
  font-size: var(--text-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4em;
  transition: all var(--t);
}
.search-btn:hover {
  background: rgba(255,255,255,0.18);
  color: #fff;
  border-color: rgba(255,255,255,0.35);
}

/* Mobile hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: rgba(255,255,255,0.8);
  border-radius: 2px;
  transition: all var(--t);
}

/* Mobile nav panel */
.mobile-nav {
  display: none;
  flex-direction: column;
  background: #021D44;
  border-top: 1px solid rgba(0,161,224,0.2);
  padding: 1rem 1.5rem;
  gap: 0.25rem;
}
.mobile-nav.open { display: flex; }
.mobile-nav a, .mobile-nav summary {
  font-family: 'Source Sans 3', sans-serif;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(190,220,255,0.80);
  padding: 0.65em 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  text-decoration: none;
  display: block;
  cursor: pointer;
  list-style: none;
}
.mobile-nav a:hover { color: #fff; }
.mobile-nav details[open] summary { color: var(--sf-sky); }
.mobile-subnav { padding-left: 1rem; margin-top: 0.25rem; }
.mobile-subnav a {
  font-size: var(--text-xs);
  padding: 0.4em 0;
  border-bottom: none;
  color: rgba(190,220,255,0.65);
  letter-spacing: 0.03em;
}

/* ══════════════════════════════════════════════════════════
   CATEGORY STRIP (below header)
   ══════════════════════════════════════════════════════════ */
.category-strip {
  background: #fff;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  scrollbar-width: none;
}
.category-strip::-webkit-scrollbar { display: none; }
.category-strip-inner {
  display: flex;
  align-items: center;
  gap: 0;
  white-space: nowrap;
  padding: 0 2rem;
  max-width: var(--max-w);
  margin: 0 auto;
}
.cat-link {
  font-family: 'Source Sans 3', sans-serif;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--muted);
  padding: 0.7em 1.1em;
  border-bottom: 2px solid transparent;
  text-decoration: none;
  transition: color var(--t), border-color var(--t);
  white-space: nowrap;
}
.cat-link:hover { color: var(--sf-blue); border-bottom-color: var(--sf-sky); }
.cat-link.active { color: var(--sf-blue); border-bottom-color: var(--sf-blue); }

/* ══════════════════════════════════════════════════════════
   HERO SECTION
   ══════════════════════════════════════════════════════════ */
.hero {
  background: linear-gradient(150deg, #01183A 0%, #032D60 55%, #044B9A 100%);
  padding: 5rem 0 4rem;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 75% 50%, rgba(0,161,224,0.12) 0%, transparent 55%),
    radial-gradient(circle at 15% 80%, rgba(0,112,210,0.10) 0%, transparent 45%);
  pointer-events: none;
}
/* Subtle grid overlay */
.hero::after {
  content: '';
  position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.hero-label {
  font-family: 'Source Sans 3', sans-serif;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sf-sky);
  margin-bottom: 0.9em;
  display: flex;
  align-items: center;
  gap: 0.5em;
}
.hero-label::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--sf-sky);
  border-radius: 2px;
}
.hero h1 {
  font-family: 'Lora', serif;
  color: #fff;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  line-height: 1.2;
  margin-bottom: 1rem;
  font-weight: 700;
}
.hero h1 em {
  font-style: italic;
  color: rgba(180,220,255,0.90);
}
.hero-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.4em;
}
.hero-meta-item {
  font-family: 'Source Sans 3', sans-serif;
  font-size: var(--text-sm);
  color: rgba(190,220,255,0.70);
  display: flex;
  align-items: center;
  gap: 0.35em;
}
.hero-excerpt {
  color: rgba(210,230,255,0.82);
  font-size: var(--text-lg);
  line-height: 1.70;
  margin-bottom: 1.8em;
}
.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.btn-hero {
  background: var(--sf-orange);
  color: #fff;
  border: 2px solid var(--sf-orange);
  padding: 0.75em 1.8em;
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
}
.btn-hero:hover {
  background: #c85208;
  border-color: #c85208;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(232,101,10,0.40);
}
.btn-hero-ghost {
  background: rgba(255,255,255,0.10);
  color: rgba(255,255,255,0.85);
  border: 2px solid rgba(255,255,255,0.22);
  padding: 0.75em 1.8em;
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
}
.btn-hero-ghost:hover {
  background: rgba(255,255,255,0.18);
  color: #fff;
  border-color: rgba(255,255,255,0.40);
  transform: translateY(-2px);
}

/* Hero featured image box */
.hero-visual {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  backdrop-filter: blur(4px);
}
.hero-code-preview {
  background: #111827;
  border-radius: var(--radius);
  padding: 1.4rem 1.6rem;
  font-family: 'Source Code Pro', monospace;
  font-size: var(--text-sm);
  line-height: 1.7;
  overflow: hidden;
}
.hero-code-preview .code-header {
  display: flex;
  align-items: center;
  gap: 0.4em;
  margin-bottom: 1em;
  padding-bottom: 0.8em;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.code-dot { width: 10px; height: 10px; border-radius: 50%; }
.code-dot.red   { background: #FF5F57; }
.code-dot.amber { background: #FEBC2E; }
.code-dot.green { background: #28C840; }
.code-file {
  margin-left: auto;
  font-size: 0.72rem;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.06em;
}
.t-keyword  { color: #C792EA; }
.t-string   { color: #C3E88D; }
.t-comment  { color: #546E7A; font-style: italic; }
.t-class    { color: #FFCB6B; }
.t-fn       { color: #82AAFF; }
.t-var      { color: #F78C6C; }
.t-num      { color: #F78C6C; }
.t-punct    { color: rgba(255,255,255,0.45); }

/* ══════════════════════════════════════════════════════════
   ARTICLE CARD
   ══════════════════════════════════════════════════════════ */
.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-dark);
}
.article-card-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.article-card-tags {
  display: flex;
  gap: 0.4em;
  flex-wrap: wrap;
  margin-bottom: 0.8em;
}
.article-card h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: 0.6em;
  line-height: 1.3;
}
.article-card h3 a {
  color: var(--ink);
  text-decoration: none;
}
.article-card h3 a:hover { color: var(--sf-blue); }
.article-card .excerpt {
  color: var(--body);
  font-size: 0.95rem;
  line-height: 1.7;
  flex: 1;
  margin-bottom: 1.2em;
}
.article-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.meta-author {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--muted);
}
.meta-date {
  font-size: var(--text-xs);
  color: var(--subtle);
}
.meta-read {
  font-size: var(--text-xs);
  color: var(--subtle);
  white-space: nowrap;
}

/* Card with left accent stripe */
.article-card.card-admin  { border-top: 3px solid var(--sf-blue); }
.article-card.card-apex   { border-top: 3px solid var(--sf-navy); }
.article-card.card-flow   { border-top: 3px solid var(--sf-sky); }
.article-card.card-cert   { border-top: 3px solid var(--sf-orange); }
.article-card.card-ai     { border-top: 3px solid var(--sf-green); }
.article-card.card-devops { border-top: 3px solid #7B61FF; }

/* ══════════════════════════════════════════════════════════
   FEATURED / HORIZONTAL CARD
   ══════════════════════════════════════════════════════════ */
.featured-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: grid;
  grid-template-columns: 1fr 360px;
  overflow: hidden;
  transition: box-shadow var(--t);
}
.featured-card:hover { box-shadow: var(--shadow-md); }
.featured-card-body {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.featured-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sf-orange);
  margin-bottom: 0.75em;
}
.featured-label::before {
  content: '★';
  font-size: 0.85em;
}
.featured-card h2 {
  font-size: clamp(1.3rem, 2.5vw, var(--text-3xl));
  margin-bottom: 0.75em;
  line-height: 1.25;
}
.featured-card h2 a { color: var(--ink); text-decoration: none; }
.featured-card h2 a:hover { color: var(--sf-blue); }
.featured-card .excerpt {
  color: var(--body);
  font-size: var(--text-lg);
  line-height: 1.70;
  margin-bottom: 1.5em;
}
.featured-visual {
  background: linear-gradient(145deg, var(--sf-navy), #044B9A);
  position: relative;
  overflow: hidden;
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.featured-visual-svg { opacity: 0.18; width: 70%; }

/* ══════════════════════════════════════════════════════════
   SECTION HEADERS
   ══════════════════════════════════════════════════════════ */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--border);
}
.section-header h2 {
  font-size: var(--text-2xl);
  color: var(--ink);
}
.section-header .section-kicker {
  display: block;
  font-family: 'Source Sans 3', sans-serif;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sf-sky);
  margin-bottom: 0.25em;
}
.section-link {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--sf-blue);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.25em;
}
.section-link:hover { color: var(--sf-navy); }
.section-link::after { content: '→'; }

/* ══════════════════════════════════════════════════════════
   LIST ARTICLE (compact)
   ══════════════════════════════════════════════════════════ */
.article-list { display: flex; flex-direction: column; gap: 0; }
.article-list-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: start;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  transition: background var(--t);
}
.article-list-item:last-child { border-bottom: none; }
.article-list-item:hover .article-list-title { color: var(--sf-blue); }
.list-num {
  font-family: 'Lora', serif;
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--border);
  line-height: 1;
  min-width: 2rem;
  padding-top: 0.1em;
}
.article-list-body {}
.article-list-title {
  font-family: 'Lora', serif;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.3;
  margin-bottom: 0.3em;
  transition: color var(--t);
}
.article-list-meta {
  font-size: var(--text-xs);
  color: var(--subtle);
  display: flex;
  gap: 0.75rem;
}
.article-list-arrow {
  color: var(--subtle);
  font-size: 1.2rem;
  padding-top: 0.1em;
  transition: transform var(--t), color var(--t);
}
.article-list-item:hover .article-list-arrow {
  transform: translateX(4px);
  color: var(--sf-blue);
}

/* ══════════════════════════════════════════════════════════
   SIDEBAR
   ══════════════════════════════════════════════════════════ */
.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}
.sidebar-widget h3 {
  font-size: var(--text-base);
  font-weight: 700;
  font-family: 'Source Sans 3', sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border);
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45em;
}
.sidebar-links { list-style: none; padding: 0; margin: 0; }
.sidebar-links li {
  padding: 0.55em 0;
  border-bottom: 1px solid var(--border);
  margin: 0;
}
.sidebar-links li:last-child { border-bottom: none; }
.sidebar-links a {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--ink);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.sidebar-links a:hover { color: var(--sf-blue); }
.sidebar-links .count {
  font-size: var(--text-xs);
  background: var(--bg-code);
  color: var(--muted);
  padding: 0.15em 0.5em;
  border-radius: 10px;
  font-weight: 600;
}

/* Newsletter widget */
.newsletter-widget {
  background: linear-gradient(145deg, var(--sf-navy), #044B9A);
  border-radius: var(--radius);
  padding: 1.8rem;
  color: #fff;
  margin-bottom: 1.5rem;
}
.newsletter-widget h3 {
  color: #fff;
  font-size: var(--text-lg);
  font-family: 'Lora', serif;
  font-weight: 700;
  margin-bottom: 0.4em;
}
.newsletter-widget p {
  color: rgba(200,225,255,0.80);
  font-size: var(--text-sm);
  margin-bottom: 1rem;
  line-height: 1.6;
}
.newsletter-form { display: flex; flex-direction: column; gap: 0.6rem; }
.newsletter-form input {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.22);
  border-radius: var(--radius-sm);
  padding: 0.65em 1em;
  color: #fff;
  font-family: 'Source Sans 3', sans-serif;
  font-size: var(--text-sm);
  outline: none;
  transition: border-color var(--t), background var(--t);
}
.newsletter-form input::placeholder { color: rgba(255,255,255,0.40); }
.newsletter-form input:focus {
  border-color: var(--sf-sky);
  background: rgba(255,255,255,0.18);
}
.newsletter-form button {
  background: var(--sf-orange);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.65em 1em;
  font-family: 'Source Sans 3', sans-serif;
  font-size: var(--text-sm);
  font-weight: 700;
  cursor: pointer;
  transition: background var(--t);
}
.newsletter-form button:hover { background: #c85208; }

/* ══════════════════════════════════════════════════════════
   MAIN LAYOUT (index + listing)
   ══════════════════════════════════════════════════════════ */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3rem;
  align-items: start;
}
.main-content {}

/* Page sections */
.page-section { padding: 3.5rem 0; }
.page-section + .page-section { border-top: 1px solid var(--border); }

/* ══════════════════════════════════════════════════════════
   ARTICLE / POST PAGE
   ══════════════════════════════════════════════════════════ */
.post-header {
  background: linear-gradient(150deg, #01183A 0%, #032D60 60%, #044B9A 100%);
  padding: 4rem 0 3.5rem;
  position: relative;
  overflow: hidden;
}
.post-header::after {
  content: '';
  position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.032) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}
.post-header-inner { position: relative; z-index: 2; max-width: var(--content-w); margin: 0 auto; padding: 0 2rem; }
.post-category {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sf-sky);
  margin-bottom: 1em;
}
.post-header h1 {
  font-size: clamp(1.7rem, 4vw, 2.8rem);
  color: #fff;
  line-height: 1.18;
  margin-bottom: 0.75em;
}
.post-deck {
  font-size: var(--text-xl);
  color: rgba(200,225,255,0.82);
  line-height: 1.65;
  margin-bottom: 1.5em;
  font-style: italic;
}
.post-byline {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}
.byline-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--sf-sky), var(--sf-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Lora', serif;
  font-weight: 700;
  font-size: var(--text-lg);
  color: #fff;
  flex-shrink: 0;
}
.byline-info {}
.byline-name {
  font-size: var(--text-sm);
  font-weight: 700;
  color: rgba(220,235,255,0.95);
  display: block;
}
.byline-meta {
  font-size: var(--text-xs);
  color: rgba(180,210,255,0.65);
  display: flex;
  gap: 0.75rem;
}

/* Post body */
.post-body {
  max-width: var(--content-w);
  margin: 0 auto;
  padding: 3rem 2rem;
}
.post-body h2 { margin: 2em 0 0.6em; }
.post-body h3 { margin: 1.6em 0 0.5em; }
.post-body p  { margin-bottom: 1.5em; font-size: var(--text-lg); line-height: 1.82; }
.post-body ul, .post-body ol { margin-bottom: 1.5em; font-size: var(--text-lg); }
.post-body li { margin-bottom: 0.5em; }
.post-body pre { margin: 1.8em 0; }
.post-body img { border-radius: var(--radius); box-shadow: var(--shadow-sm); margin: 1.8em 0; }
.post-body blockquote { margin: 1.8em 0; }

/* Callout box */
.callout {
  background: var(--bg-callout);
  border: 1px solid #BDD6F0;
  border-left: 4px solid var(--sf-sky);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1.1em 1.4em;
  margin: 1.6em 0;
}
.callout.tip    { border-left-color: var(--sf-green); background: #EBF7EE; }
.callout.warn   { border-left-color: var(--sf-orange); background: #FDF2E8; }
.callout-label {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--sf-sky);
  margin-bottom: 0.4em;
}
.callout.tip  .callout-label { color: var(--sf-green); }
.callout.warn .callout-label { color: var(--sf-orange); }
.callout p { font-size: var(--text-base); margin: 0; }

/* Article TOC */
.toc {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--sf-blue);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1.2em 1.5em;
  margin: 2em 0;
}
.toc-title {
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--muted);
  margin-bottom: 0.7em;
}
.toc ol { margin: 0; padding-left: 1.2em; }
.toc li { margin-bottom: 0.25em; }
.toc a { font-size: var(--text-sm); color: var(--link); }
.toc a:hover { color: var(--link-hover); }

/* Post navigation */
.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  max-width: var(--content-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: 2rem;
  padding-right: 2rem;
}
.post-nav-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem;
  text-decoration: none;
  transition: all var(--t);
}
.post-nav-item:hover {
  border-color: var(--sf-sky);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}
.post-nav-item.next { text-align: right; }
.post-nav-dir {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--muted);
  margin-bottom: 0.4em;
}
.post-nav-title {
  font-family: 'Lora', serif;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.3;
}

/* ══════════════════════════════════════════════════════════
   CATEGORY / LISTING PAGE
   ══════════════════════════════════════════════════════════ */
.page-banner {
  background: linear-gradient(150deg, #01183A 0%, #032D60 60%, #044B9A 100%);
  padding: 3rem 0;
  border-bottom: 3px solid var(--sf-sky);
}
.page-banner-inner { max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; }
.page-banner h1 {
  color: #fff;
  font-size: clamp(1.6rem, 3vw, var(--text-4xl));
  margin-bottom: 0.4em;
}
.page-banner p {
  color: rgba(200,225,255,0.80);
  font-size: var(--text-lg);
  max-width: 560px;
  margin: 0;
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 2.5rem 0;
}
.page-num {
  width: 38px; height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-family: 'Source Sans 3', sans-serif;
  font-size: var(--text-sm);
  font-weight: 600;
  border: 1px solid var(--border);
  color: var(--muted);
  text-decoration: none;
  transition: all var(--t);
}
.page-num:hover { border-color: var(--sf-sky); color: var(--sf-blue); }
.page-num.active { background: var(--sf-blue); border-color: var(--sf-blue); color: #fff; }

/* ══════════════════════════════════════════════════════════
   ABOUT PAGE
   ══════════════════════════════════════════════════════════ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 4rem;
  align-items: start;
  padding: 4rem 0;
}
.about-content h1 { margin-bottom: 0.5em; }
.about-content .lead {
  font-size: var(--text-xl);
  line-height: 1.70;
  color: var(--body);
  margin-bottom: 1.5em;
}
.about-content p { font-size: var(--text-lg); line-height: 1.80; }
.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 2.5rem 0;
}
.stat-item {
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1rem;
}
.stat-num {
  font-family: 'Lora', serif;
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--sf-blue);
  display: block;
  line-height: 1;
  margin-bottom: 0.25em;
}
.stat-label {
  font-size: var(--text-sm);
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.author-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  position: sticky;
  top: 88px;
}
.author-avatar {
  width: 90px; height: 90px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--sf-sky), var(--sf-navy));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Lora', serif;
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  margin: 0 auto 1rem;
}
.author-card h3 {
  font-size: var(--text-xl);
  margin-bottom: 0.25em;
}
.author-title {
  font-size: var(--text-sm);
  color: var(--sf-blue);
  font-weight: 600;
  margin-bottom: 0.75em;
  display: block;
}
.author-card p { font-size: var(--text-sm); color: var(--body); line-height: 1.65; margin-bottom: 1rem; }
.social-links { display: flex; justify-content: center; gap: 0.6rem; flex-wrap: wrap; }
.social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.35em 0.75em;
  text-decoration: none;
  transition: all var(--t);
}
.social-link:hover { border-color: var(--sf-blue); color: var(--sf-blue); }
.cert-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em;
  justify-content: center;
  margin-top: 1rem;
}
.cert-badge {
  font-size: var(--text-xs);
  font-weight: 700;
  background: var(--sf-navy);
  color: #fff;
  padding: 0.3em 0.7em;
  border-radius: 3px;
  letter-spacing: 0.04em;
}

/* ══════════════════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════════════════ */
.site-footer {
  background: #01101F;
  border-top: 3px solid var(--sf-blue);
  padding: 4rem 0 0;
  color: #7AA4C4;
  margin-top: 4rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 280px 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand {}
.footer-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  margin-bottom: 0.9em;
}
.footer-logo-image {
  display: block;
  width: clamp(130px, 14vw, 190px);
  height: auto;
}
.footer-brand p {
  font-size: var(--text-sm);
  color: #5A8AAA;
  line-height: 1.7;
  margin-bottom: 1rem;
}
.footer-col h4 {
  font-family: 'Source Sans 3', sans-serif;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 1rem;
}
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 0.55em; }
.footer-links a {
  font-size: var(--text-sm);
  color: #5A8AAA;
  text-decoration: none;
  transition: color var(--t);
}
.footer-links a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid #0a2040;
  padding: 1.2rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-copy {
  font-size: var(--text-sm);
  color: #3D5E7A;
}
.footer-legal {
  display: flex;
  gap: 1.2rem;
}
.footer-legal a {
  font-size: var(--text-xs);
  color: #3D5E7A;
  text-decoration: none;
}
.footer-legal a:hover { color: #fff; }

/* ══════════════════════════════════════════════════════════
   READING PROGRESS BAR
   ══════════════════════════════════════════════════════════ */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--sf-sky), var(--sf-orange));
  z-index: 9999;
  transition: width 0.1s linear;
}

/* ══════════════════════════════════════════════════════════
   SEARCH OVERLAY
   ══════════════════════════════════════════════════════════ */
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(1,15,35,0.92);
  z-index: 1000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 12vh;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t);
  backdrop-filter: blur(4px);
}
.search-overlay.open { opacity: 1; pointer-events: all; }
.search-box {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  width: min(640px, 90vw);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
}
.search-input-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border: 2px solid var(--sf-sky);
  border-radius: var(--radius);
  padding: 0.7em 1em;
  margin-bottom: 1.5rem;
}
.search-icon { color: var(--muted); font-size: 1.1rem; flex-shrink: 0; }
.search-input {
  flex: 1;
  border: none;
  outline: none;
  font-family: 'Source Sans 3', sans-serif;
  font-size: var(--text-lg);
  color: var(--ink);
  background: transparent;
}
.search-close {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1.3rem;
  cursor: pointer;
  flex-shrink: 0;
}
.search-suggestions h4 {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--muted);
  margin-bottom: 0.6em;
  font-family: 'Source Sans 3', sans-serif;
}
.search-tags { display: flex; gap: 0.4em; flex-wrap: wrap; }

/* ══════════════════════════════════════════════════════════
   UTILITIES
   ══════════════════════════════════════════════════════════ */
.text-center { text-align: center; }
.text-muted  { color: var(--muted); }
.mt-1 { margin-top: 0.5rem; } .mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; } .mt-4 { margin-top: 2rem; }
.mb-2 { margin-bottom: 1rem; } .mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; } .mb-6 { margin-bottom: 3rem; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ══════════════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .main-grid { grid-template-columns: 1fr; }
  .sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
  .featured-card { grid-template-columns: 1fr; }
  .featured-visual { min-height: 180px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .about-grid { grid-template-columns: 1fr; }
  .author-card { position: static; max-width: 380px; }
}

@media (max-width: 768px) {
  :root { --text-base: 1rem; }
  .container, .container-narrow { padding: 0 1.25rem; }
  .hero { padding: 3rem 0 2.5rem; }
  .hero-inner { grid-template-columns: 1fr; gap: 2rem; }
  .hero-visual { display: none; }
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .header-search .search-btn span { display: none; }
  .site-nav { display: none; }
  .hamburger { display: flex; }
  .sidebar { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .post-nav { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; }
  .page-section { padding: 2.5rem 0; }
  .post-header { padding: 2.5rem 0 2rem; }
  .post-body { padding: 2rem 1.25rem; }
  .post-body p, .post-body ul, .post-body ol { font-size: var(--text-base); }
  .featured-card-body { padding: 1.5rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.6rem; }
  .hero-actions { flex-direction: column; }
  .btn-hero, .btn-hero-ghost { width: 100%; text-align: center; justify-content: center; }
  .article-card-meta { flex-direction: column; gap: 0.25rem; }
  .category-strip-inner { padding: 0 1rem; }
}

/* Scroll animation */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fadeUp 0.5s ease forwards; }
.fade-up-delay-1 { animation-delay: 0.1s; opacity: 0; }
.fade-up-delay-2 { animation-delay: 0.2s; opacity: 0; }
.fade-up-delay-3 { animation-delay: 0.3s; opacity: 0; }