/* ===== energy-tech — Editorial Design System v3 (taste pass) =====
   Fonts: Fraunces (display/headings) + Plus Jakarta Sans (body/UI)
   Light mode only · Trust-first editorial · WCAG 2.1 AA · CLS = 0
   Redesign-preserve: every prior selector retained as a superset.
================================================================== */

/* ─── Fonts (match the families the HTML loads) ───────────────── */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,600;9..144,700;9..144,800&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

/* ─── Design Tokens ───────────────────────────────────────────── */
:root {
  /* Brand — single disciplined amber accent.
     --color-primary = bright fill (buttons, chips, icons).
     --color-link    = AA-safe amber for text/links on white (>=4.5:1). */
  --color-primary:        #d97706;
  --color-primary-hover:  #b45309;
  --color-primary-light:  #fef3c7;
  --color-link:           #b45309;
  --color-link-hover:     #92400e;
  --color-secondary:      #1e3a5f;
  --color-secondary-light:#e6eef6;
  --color-accent:         #15803d;
  --color-accent-light:   #dcfce7;

  /* Neutrals — warm ink, never pure #000 */
  --neutral-950: #0f0e0c;
  --neutral-900: #1c1a17;
  --neutral-800: #2e2b27;
  --neutral-700: #44403a;
  --neutral-600: #57524b;
  --neutral-500: #78726a;
  --neutral-400: #a8a29a;
  --neutral-300: #d6d2ca;
  --neutral-200: #e8e4dc;
  --neutral-100: #f3f0e9;
  --neutral-50:  #faf8f3;
  --white:       #ffffff;

  /* Surface — light, warm off-white */
  --bg-page:   #fffdf9;
  --bg-subtle: #faf8f3;
  --bg-muted:  #f3f0e9;
  --border:    #e8e4dc;
  --border-hover: #d6d2ca;

  /* Typography */
  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-heading: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-body:    'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;

  /* Type Scale — 1.25 modular */
  --text-xs:   0.75rem;   /* 12px */
  --text-sm:   0.875rem;  /* 14px */
  --text-base: 1.0625rem; /* 17px — editorial reading body */
  --text-lg:   1.1875rem; /* 19px */
  --text-xl:   1.375rem;  /* 22px */
  --text-2xl:  1.728rem;  /* ~28px */
  --text-3xl:  2.074rem;  /* ~33px */
  --text-4xl:  2.488rem;  /* ~40px */
  --text-5xl:  3.157rem;  /* ~51px */

  /* Spacing — 4px base */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --content-width: 680px;   /* ~66ch optimal measure */
  --wide-width:    1120px;
  --sidebar-width: 280px;

  /* Border radius — soft, one consistent scale */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-2xl:  24px;
  --radius-full: 9999px;

  /* Shadows — tinted warm, never cold black */
  --shadow-xs: 0 1px 2px rgba(44,40,36,0.05);
  --shadow-sm: 0 2px 6px rgba(44,40,36,0.06), 0 1px 2px rgba(44,40,36,0.04);
  --shadow-md: 0 8px 24px rgba(44,40,36,0.08), 0 2px 6px rgba(44,40,36,0.04);
  --shadow-lg: 0 24px 56px rgba(44,40,36,0.10), 0 6px 16px rgba(44,40,36,0.05);

  /* Transitions */
  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:   cubic-bezier(0.4, 0, 1, 1);
  --ease-base: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast:  150ms;
  --duration-base:  250ms;
  --duration-slow:  400ms;
}

/* ─── Reset & Base ────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.72;
  color: var(--neutral-900);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  text-underline-offset: 0.18em;
}

::selection { background: var(--color-primary-light); color: var(--neutral-950); }

/* ─── Reading Progress Bar ────────────────────────────────────── */
#reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: transparent;
  z-index: 1000;
}
#reading-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--color-primary);
  transition: width 0.1s linear;
  transform-origin: left;
}

/* ─── Skip Link ───────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary-hover);
  color: var(--white);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  text-decoration: none;
  z-index: 9999;
  transition: top var(--duration-fast);
}
.skip-link:focus {
  top: var(--space-4);
  outline: 2px solid var(--white);
  outline-offset: 2px;
}

/* ─── Cookie Banner (intentionally dark for contrast/attention) ── */
#cookie-banner {
  display: none;
  position: fixed;
  bottom: var(--space-4);
  left: 50%;
  transform: translateX(-50%);
  width: min(560px, calc(100vw - var(--space-8)));
  background: var(--neutral-950);
  color: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--space-5) var(--space-6);
  box-shadow: var(--shadow-lg);
  z-index: 900;
  gap: var(--space-4);
}
#cookie-banner.visible { display: flex; flex-direction: column; gap: var(--space-4); animation: slideUp var(--duration-slow) var(--ease-out); }
@keyframes slideUp { from { opacity:0; transform: translateX(-50%) translateY(var(--space-6)); } to { opacity:1; transform: translateX(-50%) translateY(0); } }
.cookie-inner { display: flex; flex-direction: column; gap: var(--space-4); }
.cookie-text strong { font-size: var(--text-sm); letter-spacing: .04em; text-transform: uppercase; color: var(--neutral-400); }
.cookie-text p { font-size: var(--text-sm); color: var(--neutral-300); margin-top: var(--space-1); line-height: 1.55; }
.cookie-text a { color: var(--white); text-decoration: underline; text-underline-offset: 2px; }
.cookie-actions { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.btn-accept-all { background: var(--color-primary); color: var(--neutral-950); border: none; border-radius: var(--radius-md); padding: var(--space-2) var(--space-5); font-size: var(--text-sm); font-weight: 700; font-family: var(--font-body); cursor: pointer; transition: background var(--duration-fast); }
.btn-accept-all:hover { background: #f59e0b; }
.btn-reject, .btn-settings { background: transparent; color: var(--neutral-300); border: 1px solid var(--neutral-700); border-radius: var(--radius-md); padding: var(--space-2) var(--space-4); font-size: var(--text-sm); font-family: var(--font-body); cursor: pointer; transition: color var(--duration-fast), border-color var(--duration-fast); }
.btn-reject:hover, .btn-settings:hover { color: var(--white); border-color: var(--neutral-500); }

/* ─── Site Header ─────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,253,249,0.85);
  backdrop-filter: blur(14px) saturate(180%);
  -webkit-backdrop-filter: blur(14px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--duration-base) var(--ease-out), border-color var(--duration-base);
}
.site-header.scrolled { box-shadow: var(--shadow-sm); border-bottom-color: var(--border-hover); }
.header-inner {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--neutral-950);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.01em;
  flex-shrink: 0;
}
.site-logo svg { width: 28px; height: 28px; color: var(--color-primary); flex-shrink: 0; }
.site-logo:hover { color: var(--color-primary-hover); }
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.site-nav a {
  padding: var(--space-2) var(--space-3);
  text-decoration: none;
  color: var(--neutral-700);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: color var(--duration-fast), background var(--duration-fast);
  white-space: nowrap;
}
.site-nav a:hover { color: var(--neutral-950); background: var(--neutral-100); }
.site-nav a.nav-cta {
  background: var(--color-primary);
  color: var(--neutral-950);
  font-weight: 700;
  padding: var(--space-2) var(--space-4);
}
.site-nav a.nav-cta:hover { background: #f59e0b; color: var(--neutral-950); }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  color: var(--neutral-700);
}
@media (max-width: 768px) {
  .nav-toggle { display: flex; align-items: center; }
  .site-nav {
    display: none;
    position: fixed;
    top: 64px;
    left: 0; right: 0;
    background: var(--bg-page);
    border-bottom: 1px solid var(--border);
    padding: var(--space-4) var(--space-6);
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
    box-shadow: var(--shadow-md);
    z-index: 99;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: var(--space-3) var(--space-4); border-radius: var(--radius-md); }
}

/* ─── Hero Section (LIGHT — asymmetric, left-aligned) ─────────── */
.hero-section {
  background:
    radial-gradient(120% 90% at 88% 0%, var(--color-primary-light) 0%, transparent 55%),
    var(--bg-page);
  border-bottom: 1px solid var(--border);
  padding: var(--space-20) 0 var(--space-16);
}
.hero-inner {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-12);
  align-items: center;
}
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: var(--space-8); }
  .hero-visual { display: none; }
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary-hover);
  background: var(--color-primary-light);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 4.6vw, var(--text-5xl));
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--neutral-950);
  margin-bottom: var(--space-5);
  max-width: 18ch;
  text-wrap: balance;
}
.hero-subhead {
  font-size: var(--text-lg);
  color: var(--neutral-700);
  line-height: 1.6;
  max-width: 52ch;
  margin-bottom: var(--space-8);
}
.hero-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.hero-visual {
  position: relative;
  background: var(--color-primary-light);
  border-radius: var(--radius-2xl);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.hero-visual svg {
  width: 60%;
  height: 60%;
  color: var(--color-primary);
  opacity: 0.45;
}

/* ─── Buttons ─────────────────────────────────────────────────── */
.btn-primary, .btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 700;
  font-family: var(--font-body);
  text-decoration: none;
  cursor: pointer;
  border: none;
  white-space: nowrap;
  transition: transform var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out),
              background var(--duration-fast);
}
.btn-primary:active, .btn-secondary:active { transform: translateY(1px) scale(0.99); }
.btn-primary {
  background: var(--color-primary);
  color: var(--neutral-950);
  box-shadow: 0 2px 8px rgba(180,83,9,0.18);
}
.btn-primary:hover {
  background: #f59e0b;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(180,83,9,0.22);
}
.btn-secondary {
  background: var(--white);
  color: var(--neutral-800);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--neutral-50);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

/* ─── Categories Section ──────────────────────────────────────── */
.categories-section {
  padding: var(--space-16) 0;
  background: var(--bg-subtle);
}
.section-inner {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.section-header {
  margin-bottom: var(--space-10);
}
.section-label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary-hover);
  margin-bottom: var(--space-2);
  display: block;
}
.section-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--neutral-950);
  line-height: 1.15;
  text-wrap: balance;
}
.categories-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
.categories-grid .category-card:nth-child(1),
.categories-grid .category-card:nth-child(2) {
  /* Top 2 cards: large */
}
.categories-grid .category-card:nth-child(3),
.categories-grid .category-card:nth-child(4),
.categories-grid .category-card:nth-child(5) {
  /* Bottom 3: smaller, in a row */
}
@media (min-width: 900px) {
  .categories-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
  }
  .categories-grid .category-card:nth-child(n+3) {
    /* Show bottom 3 in a 3-col sub-grid */
  }
}
@media (max-width: 600px) {
  .categories-grid { grid-template-columns: 1fr; }
}

.category-card {
  display: block;
  text-decoration: none;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: transform var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out),
              border-color var(--duration-fast);
}
.category-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}
.cat-icon {
  width: 44px;
  height: 44px;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  color: var(--color-primary-hover);
}
.cat-icon svg { width: 22px; height: 22px; }
.category-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--neutral-950);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}
.category-card p {
  font-size: var(--text-sm);
  color: var(--neutral-600);
  line-height: 1.55;
}

/* ─── About Section ───────────────────────────────────────────── */
.about-section {
  padding: var(--space-16) 0;
  border-top: 1px solid var(--border);
}
.about-inner {
  max-width: 680px;
}
.about-text h2 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--neutral-950);
  margin-bottom: var(--space-5);
  text-wrap: balance;
}
.about-text p {
  font-size: var(--text-lg);
  color: var(--neutral-700);
  line-height: 1.72;
  margin-bottom: var(--space-4);
  max-width: 66ch;
}
.author-signature {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  margin-top: var(--space-8);
}
.author-avatar {
  width: 52px;
  height: 52px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--neutral-950);
}
.author-avatar svg { width: 28px; height: 28px; }
.author-info strong { display: block; font-size: var(--text-sm); font-weight: 700; color: var(--neutral-950); }
.author-info span { font-size: var(--text-sm); color: var(--neutral-500); }

/* ─── Article Layout ──────────────────────────────────────────── */
.article-layout {
  max-width: calc(var(--content-width) + var(--sidebar-width) + var(--space-12));
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: var(--space-10);
  align-items: start;
}
@media (max-width: 1100px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { display: none; }
}

/* ─── Article Content ─────────────────────────────────────────── */
.post-layout { max-width: var(--content-width); }
.post-header { margin-bottom: var(--space-6); }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--neutral-500);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}
.breadcrumb ol { list-style: none; display: flex; align-items: center; gap: var(--space-1); flex-wrap: wrap; }
.breadcrumb li { display: flex; align-items: center; gap: var(--space-1); }
.breadcrumb li + li::before { content: '/'; color: var(--neutral-300); }
.breadcrumb a { color: var(--color-link); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb [aria-current="page"] { color: var(--neutral-500); }

h1.post-title, .post-header h1 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.6vw, var(--text-4xl));
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--neutral-950);
  margin-bottom: var(--space-5);
  text-wrap: balance;
}
.post-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-sm);
  color: var(--neutral-500);
  flex-wrap: wrap;
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--border);
}
.post-meta time, .post-meta .reading-time { display: flex; align-items: center; gap: var(--space-1); }
.post-meta svg { width: 14px; height: 14px; }

/* ─── Disclaimer (MANDATORY per AGENTE-01) ────────────────────── */
.disclaimer {
  display: flex;
  gap: var(--space-4);
  background: var(--color-primary-light);
  border: 1px solid #f0c66b;
  border-left: 4px solid var(--color-primary-hover);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  margin: var(--space-6) 0;
}
.disclaimer-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  color: var(--color-primary-hover);
  margin-top: 2px;
}
.disclaimer-body strong {
  display: block;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary-hover);
  margin-bottom: var(--space-1);
}
.disclaimer-body p {
  font-size: var(--text-sm);
  color: var(--neutral-800);
  line-height: 1.55;
  margin: 0;
}

/* ─── Table of Contents ───────────────────────────────────────── */
.toc {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin: var(--space-8) 0;
}
.toc-title {
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--neutral-500);
  margin-bottom: var(--space-3);
}
.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  counter-reset: toc;
}
.toc-list li { counter-increment: toc; }
.toc-list a {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--neutral-700);
  font-size: var(--text-sm);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast), background var(--duration-fast);
}
.toc-list a::before {
  content: counter(toc);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--neutral-400);
  flex-shrink: 0;
  width: 18px;
}
.toc-list a:hover, .toc-list a.active {
  color: var(--color-primary-hover);
  background: var(--color-primary-light);
}
/* Sidebar TOC — sticky on desktop */
.sidebar-toc {
  position: sticky;
  top: 84px;
}
.sidebar-toc .toc-title { font-size: var(--text-xs); }

/* ─── Article Body ────────────────────────────────────────────── */
.post-content h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--neutral-950);
  margin: var(--space-12) 0 var(--space-4);
  line-height: 1.2;
  scroll-margin-top: 84px;
  text-wrap: balance;
}
.post-content h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--neutral-900);
  margin: var(--space-8) 0 var(--space-3);
  scroll-margin-top: 84px;
}
.post-content p {
  font-size: var(--text-base);
  line-height: 1.78;
  color: var(--neutral-800);
  margin-bottom: var(--space-5);
  max-width: 66ch;
}
.post-content > p:first-of-type {
  font-size: var(--text-lg);
  color: var(--neutral-700);
  line-height: 1.7;
}
.post-content strong { font-weight: 700; color: var(--neutral-950); }
.post-content em { font-style: italic; }
.post-content a {
  color: var(--color-link);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: rgba(180,83,9,0.4);
  transition: text-decoration-color var(--duration-fast), color var(--duration-fast);
}
.post-content a:hover { color: var(--color-link-hover); text-decoration-thickness: 2px; text-decoration-color: currentColor; }
.post-content ul, .post-content ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-5);
  max-width: 66ch;
}
.post-content li {
  margin-bottom: var(--space-2);
  color: var(--neutral-800);
  line-height: 1.72;
}
.post-content ul li::marker { color: var(--color-primary-hover); }
.post-content ol li::marker { color: var(--neutral-500); font-weight: 700; }
.post-content ol li { padding-left: var(--space-2); }
.post-content blockquote {
  border-left: 3px solid var(--color-primary-hover);
  padding: var(--space-4) var(--space-6);
  margin: var(--space-8) 0;
  background: var(--bg-subtle);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--neutral-800);
  font-style: italic;
  line-height: 1.55;
}
.post-content blockquote p { margin-bottom: var(--space-2); }
.post-content blockquote p:last-child { margin-bottom: 0; }
.post-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-10) 0;
}
.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-6) 0;
  font-size: var(--text-sm);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.post-content th {
  background: var(--neutral-900);
  color: var(--white);
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-weight: 600;
}
.post-content td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  color: var(--neutral-800);
}
.post-content tr:nth-child(even) td { background: var(--bg-subtle); }
.post-content img { border-radius: var(--radius-lg); margin: var(--space-6) 0; }
.post-content figure { margin: var(--space-8) 0; }
.post-content figcaption { font-size: var(--text-sm); color: var(--neutral-500); margin-top: var(--space-2); text-align: center; }

/* ─── Callout Box ─────────────────────────────────────────────── */
.callout {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  margin: var(--space-6) 0;
  border-left-width: 4px;
  border-left-style: solid;
}
.callout--info { background: var(--color-primary-light); border: 1px solid #f0c66b; border-left-color: var(--color-primary-hover); }
.callout--tip { background: var(--color-accent-light); border: 1px solid #86c79c; border-left-color: var(--color-accent); }
.callout--warn { background: var(--color-secondary-light); border: 1px solid #aac6e0; border-left-color: var(--color-secondary); }
.callout-icon { flex-shrink: 0; width: 20px; height: 20px; margin-top: 2px; }
.callout--info .callout-icon { color: var(--color-primary-hover); }
.callout--tip .callout-icon { color: var(--color-accent); }
.callout--warn .callout-icon { color: var(--color-secondary); }
.callout-body p { margin: 0; font-size: var(--text-sm); line-height: 1.6; color: var(--neutral-800); }
.callout-body strong { display: block; font-weight: 700; margin-bottom: var(--space-1); color: var(--neutral-950); }

/* ─── Ad Slots (CLS = 0 guaranteed; clean editorial framing) ──── */
.ad-slot {
  display: block;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin: var(--space-10) auto;
  position: relative;
  text-align: center;
}
.ad-slot::before {
  content: 'PUBBLICITÀ';
  display: block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--neutral-400);
  padding-top: var(--space-2);
}
.ad-slot:empty { display: none; }
.ad-slot .adsbygoogle { display: block; }
.adsbygoogle { display: block; }
.ad-slot--in-content {
  min-height: 250px;
  width: 100%;
  max-width: 728px;
}
.ad-slot--sidebar {
  min-height: 250px;
  min-width: 300px;
  width: 300px;
}
.ad-slot--leaderboard {
  min-height: 90px;
  width: 100%;
  max-width: 728px;
}

/* ─── Newsletter Inline (dark card — single intentional dark block) ── */
.newsletter-inline {
  background: var(--neutral-950);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin: var(--space-10) 0;
  color: var(--white);
  box-shadow: var(--shadow-md);
}
.newsletter-inline h3 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-2);
  color: var(--white);
}
.newsletter-inline p { font-size: var(--text-sm); color: var(--neutral-300); margin-bottom: var(--space-5); }
.newsletter-form { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.newsletter-form input[type="email"] {
  flex: 1;
  min-width: 200px;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--neutral-700);
  background: var(--neutral-900);
  color: var(--white);
  font-size: var(--text-sm);
  font-family: var(--font-body);
  outline: none;
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
}
.newsletter-form input[type="email"]:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(217,119,6,0.25); }
.newsletter-form input[type="email"]::placeholder { color: var(--neutral-400); }
.newsletter-form button {
  padding: var(--space-3) var(--space-5);
  background: var(--color-primary);
  color: var(--neutral-950);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 700;
  font-family: var(--font-body);
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--duration-fast), transform var(--duration-fast);
}
.newsletter-form button:hover { background: #f59e0b; transform: translateY(-1px); }
.newsletter-disclaimer { font-size: var(--text-xs); color: var(--neutral-400); margin-top: var(--space-3); }

/* ─── FAQ Section ─────────────────────────────────────────────── */
.faq-section { margin: var(--space-12) 0; }
.faq-section h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--neutral-950);
  margin-bottom: var(--space-6);
}
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: var(--space-5) 0;
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  cursor: pointer;
  list-style: none;
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question dt, .faq-question strong {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--neutral-950);
  line-height: 1.4;
}
.faq-answer, .faq-item dd {
  margin-top: var(--space-3);
  font-size: var(--text-base);
  color: var(--neutral-700);
  line-height: 1.72;
  max-width: 66ch;
}
dl.faq-list dt {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--neutral-950);
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border);
}
dl.faq-list dt:first-child { margin-top: 0; padding-top: 0; border-top: none; }
dl.faq-list dd {
  margin: var(--space-2) 0 0 0;
  color: var(--neutral-700);
  line-height: 1.72;
  max-width: 66ch;
}
dl.faq-list dd p { margin: 0; }

/* ─── Author Box ──────────────────────────────────────────────── */
.author-box {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin: var(--space-10) 0;
}
.author-box-avatar {
  width: 60px;
  height: 60px;
  background: var(--color-primary-light);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-primary-hover);
}
.author-box-avatar svg { width: 32px; height: 32px; }
.author-box-info { min-width: 0; }
.author-box-label { font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--neutral-500); margin-bottom: var(--space-1); }
.author-box-name { font-family: var(--font-display); font-size: var(--text-lg); font-weight: 700; color: var(--neutral-950); margin-bottom: var(--space-2); }
.author-box-bio { font-size: var(--text-sm); color: var(--neutral-600); line-height: 1.6; max-width: 60ch; }

/* ─── Related Articles ────────────────────────────────────────── */
.related-articles { margin: var(--space-12) 0; }
.related-articles h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--neutral-950);
  margin-bottom: var(--space-5);
  letter-spacing: -0.01em;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}
@media (max-width: 768px) {
  .related-grid { grid-template-columns: 1fr; }
}
.related-card {
  text-decoration: none;
  display: block;
  padding: var(--space-5);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform var(--duration-base) var(--ease-out), box-shadow var(--duration-base), border-color var(--duration-fast);
}
.related-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-sm); border-color: var(--color-primary); }
.related-card-category { font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--color-primary-hover); margin-bottom: var(--space-2); }
.related-card-title { font-size: var(--text-base); font-weight: 600; color: var(--neutral-950); line-height: 1.4; }

/* ─── Article Sidebar ─────────────────────────────────────────── */
.article-sidebar { min-width: 0; }

/* ─── Site Footer (intentionally dark anchor) ─────────────────── */
.site-footer {
  background: var(--neutral-950);
  color: var(--neutral-400);
  padding: var(--space-16) 0 var(--space-8);
  margin-top: var(--space-20);
}
.footer-inner {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-8);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid var(--neutral-800);
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; }
}
.footer-brand {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}
.footer-disclaimer {
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--neutral-400);
  max-width: 40ch;
}
.footer-col h4 {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--neutral-300);
  margin-bottom: var(--space-4);
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: var(--space-2); }
.footer-col a {
  font-size: var(--text-sm);
  color: var(--neutral-400);
  text-decoration: none;
  transition: color var(--duration-fast);
}
.footer-col a:hover { color: var(--white); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding-top: var(--space-8);
  font-size: var(--text-sm);
  color: var(--neutral-500);
}
.footer-bottom a { color: var(--neutral-400); text-decoration: none; }
.footer-bottom a:hover { color: var(--neutral-200); }

/* ─── 404 Error Page ──────────────────────────────────────────── */
.error-page { min-height: 60vh; display: flex; align-items: center; justify-content: center; padding: var(--space-16) var(--space-6); }
.error-inner { max-width: 480px; text-align: center; }
.error-code {
  font-family: var(--font-display);
  font-size: 7rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-primary);
  letter-spacing: -0.04em;
  margin-bottom: var(--space-4);
}
.error-inner h1 { font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 700; color: var(--neutral-950); margin-bottom: var(--space-4); letter-spacing: -0.02em; }
.error-inner p { font-size: var(--text-lg); color: var(--neutral-600); margin-bottom: var(--space-8); }
.error-links { display: flex; gap: var(--space-3); justify-content: center; flex-wrap: wrap; }

/* ─── Legal Pages ─────────────────────────────────────────────── */
.legal-layout { max-width: 720px; margin: var(--space-10) auto; padding: 0 var(--space-6) var(--space-16); }
.legal-layout h1 { font-family: var(--font-display); font-size: var(--text-3xl); font-weight: 700; letter-spacing: -0.02em; margin-bottom: var(--space-3); color: var(--neutral-950); }
.legal-updated { font-size: var(--text-sm); color: var(--neutral-500); margin-bottom: var(--space-10); }
.legal-layout h2 { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 700; color: var(--neutral-950); margin: var(--space-10) 0 var(--space-4); letter-spacing: -0.01em; }
.legal-layout h3 { font-size: var(--text-base); font-weight: 700; color: var(--neutral-900); margin: var(--space-6) 0 var(--space-2); }
.legal-layout p { font-size: var(--text-base); line-height: 1.78; color: var(--neutral-800); margin-bottom: var(--space-4); max-width: 70ch; }
.legal-layout ul, .legal-layout ol { padding-left: var(--space-6); margin-bottom: var(--space-4); max-width: 70ch; }
.legal-layout li { font-size: var(--text-base); line-height: 1.72; color: var(--neutral-800); margin-bottom: var(--space-2); }
.legal-layout a { color: var(--color-link); text-decoration: underline; text-underline-offset: 3px; }
.legal-layout a:hover { color: var(--color-link-hover); }
.plain-language {
  background: var(--color-primary-light);
  border: 1px solid #f0c66b;
  border-left: 4px solid var(--color-primary-hover);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  margin: var(--space-4) 0;
  font-size: var(--text-sm);
  color: var(--neutral-800);
}
.plain-language strong { color: var(--color-primary-hover); }
.legal-table { width: 100%; border-collapse: collapse; margin: var(--space-6) 0; font-size: var(--text-sm); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }
.legal-table th { background: var(--neutral-900); color: var(--white); padding: var(--space-3) var(--space-4); text-align: left; font-weight: 600; }
.legal-table td { padding: var(--space-3) var(--space-4); border-bottom: 1px solid var(--border); vertical-align: top; color: var(--neutral-800); }
.legal-table tr:nth-child(even) td { background: var(--bg-subtle); }
@media (max-width: 600px) {
  .legal-table { font-size: var(--text-xs); }
  .legal-table th, .legal-table td { padding: var(--space-2); }
}

/* ─── Focus Styles (WCAG 2.1 AA) ──────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--color-primary-hover);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}
button:focus-visible, a:focus-visible { outline-offset: 3px; }

/* ─── Hero Text + Visual (asymmetric homepage) ────────────────── */
.hero-text { max-width: 600px; }
.hero-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-10);
}
.hero-badge__icon { width: 80px; height: 80px; color: var(--color-primary); }
.hero-badge__icon svg { width: 100%; height: 100%; }
.hero-badge__label {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary-hover);
  letter-spacing: -0.01em;
}

/* ─── Post Body Wrap (content + sidebar TOC) ──────────────────── */
.post-body-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-top: var(--space-2);
}
@media (min-width: 1100px) {
  .post-body-wrap {
    grid-template-columns: var(--sidebar-width) 1fr;
    align-items: start;
  }
  .post-body-wrap .toc {
    position: sticky;
    top: 84px;
    order: -1;
  }
  .post-body-wrap .post-content {
    min-width: 0;
  }
}

/* ─── Responsive fix: no overflow orizzontale colonna articolo ──
   I grid item hanno min-width:auto e non si restringono sotto il loro
   min-content (un input/parola lunga forzava ~300px → overflow < 360px). */
.post-body-wrap > * { min-width: 0; }
.post-content { overflow-wrap: break-word; }
.post-content table { display: block; max-width: 100%; overflow-x: auto; }
.newsletter-form input { min-width: 0; flex: 1 1 auto; }
@media (max-width: 400px) { .btn-primary, .btn-secondary { white-space: normal; max-width: 100%; } }

/* ─── Post Layout full-width on article pages ─────────────────── */
.post-layout {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
}

/* ─── TOC inline (JS-generated) ───────────────────────────────── */
#toc {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin: var(--space-8) 0;
}
#toc .toc-title {
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--neutral-500);
  margin-bottom: var(--space-3);
  display: block;
}
#toc ol {
  list-style: decimal;
  padding-left: var(--space-5);
}
#toc ol li { margin-bottom: var(--space-2); }
#toc ol a {
  text-decoration: none;
  color: var(--neutral-700);
  font-size: var(--text-sm);
  transition: color var(--duration-fast);
}
#toc ol a:hover { color: var(--color-link-hover); }

/* ─── 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-width: 0; }
img { max-width: 100%; height: auto; display: block; }
picture img { width: 100%; height: auto; }

/* ─── Skeleton Shimmer ────────────────────────────────────────── */
@keyframes shimmer {
  0%   { background-position: -800px 0; }
  100% { background-position:  800px 0; }
}
.skeleton {
  display: block;
  background: linear-gradient(90deg, var(--neutral-200) 25%, var(--neutral-100) 50%, var(--neutral-200) 75%);
  background-size: 800px 100%;
  animation: shimmer 1.4s ease-in-out infinite;
  border-radius: 4px;
}
.skeleton-text  { height: 1em; margin-bottom: var(--space-2, 0.5rem); width: 100%; }
.skeleton-text--sm   { width: 60%; }
.skeleton-text--md   { width: 80%; }
.skeleton-title { height: 1.5em; width: 70%; margin-bottom: var(--space-3, 0.75rem); }
.skeleton-img   { width: 100%; aspect-ratio: 16/9; }
.skeleton-card  { padding: var(--space-4, 1rem); border: 1px solid var(--border, #e8e4dc); border-radius: 8px; }

/* ─── LCP image — prevent CLS ─────────────────────────────────── */
img[loading="lazy"] { content-visibility: auto; }
img[fetchpriority="high"] { content-visibility: visible; }

/* ─── Font-display swap (reduce FOIT) ─────────────────────────── */
@font-face { font-display: swap; }

/* ─── Hero Image Support (subtle, no infinite zoom) ───────────── */
.hero-visual { position: relative; overflow: hidden; }
.hero-visual img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform var(--duration-slow) var(--ease-out); }
.hero-visual:hover img { transform: scale(1.03); }
.hero-visual-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(15,14,12,0.18) 0%, transparent 55%); pointer-events: none; }

/* ─── Scroll Reveal (one-shot, restrained) ────────────────────── */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.40s; }

/* ─── Enhanced Card Hover ─────────────────────────────────────── */
.category-card:hover .cat-icon { transform: scale(1.08); }
.cat-icon { transition: transform var(--duration-base) var(--ease-out); }

/* Kept keyframes (referenced previously) — applied only on hover/intent,
   no perpetual infinite loops on load (editorial restraint, MOTION 3-4). */
@keyframes gridPulse { 0%,100%{opacity:1;} 50%{opacity:0.55;} }
@keyframes powerFlow { 0%{transform:scale(0.97);} 50%{transform:scale(1.03);} 100%{transform:scale(0.97);} }
@keyframes heroZoom { from { transform: scale(1); } to { transform: scale(1.04); } }
.hero-badge__icon { transition: transform var(--duration-base) var(--ease-out); }
.hero-badge:hover .hero-badge__icon { transform: scale(1.05); }