/* ==========================================================================
   THE COLD VAULT DIGEST - DESIGN SYSTEM & STYLESHEET
   100% Unique Architecture & Modern Executive Editorial Aesthetic
   Palette: Obsidian & Deep Indigo Canvas, Electric Violet/Indigo Accent,
            Warm Amber/Gold Signals, Crisp Alabaster Paper Surfaces
   ========================================================================== */

:root {
  /* Core Brand Identity (Electric Violet / Indigo & Deep Obsidian) */
  --cvd-brand-primary: #4f46e5;       /* Electric Indigo */
  --cvd-brand-primary-hover: #4338ca;
  --cvd-brand-accent: #6366f1;        /* Radiant Violet */
  --cvd-brand-accent-glow: rgba(99, 102, 241, 0.25);
  --cvd-brand-subtle: #eef2ff;

  /* Executive Dark Surfaces (Header, Footer, Feature Callouts) */
  --cvd-dark-bg: #090d16;
  --cvd-dark-surface: #111827;
  --cvd-dark-card: #161f33;
  --cvd-dark-border: #1f293d;
  --cvd-dark-text: #f8fafc;
  --cvd-dark-muted: #94a3b8;

  /* Editorial Light Surfaces (Main Reading Canvas) */
  --cvd-canvas-bg: #f8fafc;
  --cvd-paper-bg: #ffffff;
  --cvd-card-bg: #ffffff;
  --cvd-card-alt: #f1f5f9;
  --cvd-border-light: #e2e8f0;
  --cvd-border-hover: #cbd5e1;

  /* Typography Colors */
  --cvd-text-heading: #0f172a;
  --cvd-text-body: #334155;
  --cvd-text-muted: #64748b;
  --cvd-text-light: #94a3b8;

  /* Functional & Alert Signals */
  --cvd-signal-amber: #d97706;       /* Verified Advisory Amber */
  --cvd-signal-amber-bg: #fffbeb;
  --cvd-signal-amber-border: #fde68a;
  --cvd-signal-amber-text: #92400e;

  --cvd-signal-crimson: #e11d48;     /* Threat / Danger Red */
  --cvd-signal-crimson-bg: #fff1f2;
  --cvd-signal-crimson-border: #fecdd3;
  --cvd-signal-crimson-text: #9f1239;

  --cvd-signal-emerald: #059669;     /* Genuine / Safe Green */
  --cvd-signal-emerald-bg: #ecfdf5;
  --cvd-signal-emerald-border: #a7f3d0;
  --cvd-signal-emerald-text: #065f46;

  /* Fonts & Radius */
  --cvd-font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter", "Helvetica Neue", Arial, sans-serif;
  --cvd-font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;

  --cvd-radius-xs: 4px;
  --cvd-radius-sm: 8px;
  --cvd-radius-md: 12px;
  --cvd-radius-lg: 16px;
  --cvd-radius-xl: 24px;
  --cvd-radius-full: 9999px;

  /* Shadows */
  --cvd-shadow-subtle: 0 1px 3px 0 rgba(15, 23, 42, 0.05);
  --cvd-shadow-card: 0 4px 6px -1px rgba(15, 23, 42, 0.06), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
  --cvd-shadow-elevated: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --cvd-shadow-indigo: 0 10px 25px -3px rgba(79, 70, 229, 0.35);

  --cvd-content-width: 860px;
  --cvd-wide-width: 1180px;
}

/* ==========================================================================
   BASE RESET & TYPOGRAPHY
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  color-scheme: light;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--cvd-font-sans);
  font-size: 1.05rem;
  line-height: 1.78;
  color: var(--cvd-text-body);
  background-color: var(--cvd-canvas-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Reading Progress Bar (Top) */
#cvd-reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3.5px;
  width: 0%;
  background: linear-gradient(90deg, #4f46e5, #818cf8, #38bdf8, #f59e0b);
  z-index: 1000;
  transition: width 0.1s ease-out;
}

/* ==========================================================================
   TOP INDEPENDENT ADVISORY BAR
   ========================================================================== */
.cvd-topbar {
  background: #0f172a;
  color: #cbd5e1;
  font-size: 0.82rem;
  border-bottom: 1px solid #1e293b;
  padding: 8px 20px;
}

.cvd-topbar-inner {
  max-width: var(--cvd-wide-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.cvd-topbar-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(99, 102, 241, 0.15);
  color: #a5b4fc;
  border: 1px solid rgba(99, 102, 241, 0.3);
  padding: 2px 8px;
  border-radius: var(--cvd-radius-xs);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

.cvd-topbar-tag svg {
  width: 12px;
  height: 12px;
  color: #818cf8;
}

.cvd-topbar-text {
  flex: 1;
  min-width: 260px;
}

.cvd-topbar-text a {
  color: #93c5fd;
  text-decoration: none;
  font-weight: 600;
}

.cvd-topbar-text a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   STICKY HEADER & NAVIGATION
   ========================================================================== */
.cvd-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--cvd-border-light);
  z-index: 100;
  transition: box-shadow 0.25s ease;
}

.cvd-header.is-scrolled {
  box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.08);
}

.cvd-header-container {
  max-width: var(--cvd-wide-width);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.cvd-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none !important;
  color: var(--cvd-text-heading);
}

.cvd-brand-shield {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #1e1b4b 0%, #4338ca 100%);
  border-radius: var(--cvd-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 3px 8px rgba(67, 56, 202, 0.35);
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.cvd-brand-shield::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.15), transparent);
  transform: rotate(45deg);
}

.cvd-brand-shield svg {
  width: 20px;
  height: 20px;
}

.csj-brand-title {
  font-size: 1.22rem;
  font-weight: 800;
  letter-spacing: -0.4px;
  color: var(--cvd-text-heading);
}

.csj-brand-title span {
  color: var(--cvd-brand-primary);
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.cvd-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.cvd-nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.cvd-nav-link {
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--cvd-text-muted);
  text-decoration: none !important;
  padding: 8px 16px;
  border-radius: var(--cvd-radius-full);
  transition: all 0.2s ease;
}

.cvd-nav-link:hover {
  color: var(--cvd-text-heading);
  background: var(--cvd-card-alt);
}

.cvd-nav-link.active {
  color: var(--cvd-brand-primary);
  background: var(--cvd-brand-subtle);
  font-weight: 700;
}

.cvd-nav-link-btn {
  background: #f1f5f9;
  border: 1px solid var(--cvd-border-light);
  color: var(--cvd-text-heading);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.cvd-nav-link-btn:hover {
  background: #e2e8f0;
  color: var(--cvd-brand-primary);
}

.cvd-mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--cvd-border-light);
  border-radius: var(--cvd-radius-sm);
  padding: 7px 11px;
  cursor: pointer;
  color: var(--cvd-text-heading);
}

.cvd-mobile-toggle svg {
  width: 22px;
  height: 22px;
  display: block;
}

/* ==========================================================================
   CONTAINERS & EDITORIAL CANVAS
   ========================================================================== */
.cvd-page-wrapper {
  max-width: var(--cvd-wide-width);
  margin: 0 auto;
  padding: 0 24px;
}

.cvd-article-canvas {
  background: var(--cvd-paper-bg);
  border: 1px solid var(--cvd-border-light);
  border-radius: var(--cvd-radius-xl);
  padding: 48px 52px;
  margin: 30px auto 60px;
  max-width: var(--cvd-content-width);
  box-shadow: var(--cvd-shadow-card);
}

/* ==========================================================================
   HERO BANNER & ASYMMETRIC METRIC WIDGET
   ========================================================================== */
.cvd-hero-editorial {
  padding: 40px 0 24px;
  border-bottom: 1px solid var(--cvd-border-light);
  margin-bottom: 34px;
}

.cvd-topic-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.08), rgba(99, 102, 241, 0.12));
  color: var(--cvd-brand-primary);
  border: 1px solid rgba(79, 70, 229, 0.2);
  padding: 5px 14px;
  border-radius: var(--cvd-radius-full);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: 18px;
}

.cvd-topic-badge svg {
  width: 14px;
  height: 14px;
  color: var(--cvd-brand-primary);
}

.cvd-headline {
  font-size: 2.35rem;
  line-height: 1.24;
  font-weight: 800;
  letter-spacing: -0.6px;
  color: var(--cvd-text-heading);
  margin: 0 0 18px;
}

.cvd-subheading-lede {
  font-size: 1.2rem;
  line-height: 1.68;
  color: var(--cvd-text-body);
  margin: 0 0 26px;
  font-weight: 400;
}

/* Editorial Metadata Stamp */
.cvd-author-stamp {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 18px;
  padding: 14px 0 0;
  border-top: 1px solid var(--cvd-border-light);
  font-size: 0.88rem;
  color: var(--cvd-text-muted);
}

.cvd-stamp-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.cvd-stamp-chip svg {
  width: 16px;
  height: 16px;
  color: var(--cvd-brand-primary);
}

.cvd-stamp-chip b {
  color: var(--cvd-text-heading);
  font-weight: 600;
}

.cvd-stamp-dot {
  color: #cbd5e1;
}

.cvd-verified-pill {
  background: #ecfdf5;
  color: var(--cvd-signal-emerald-text);
  border: 1px solid #a7f3d0;
  padding: 2px 10px;
  border-radius: var(--cvd-radius-full);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

/* ==========================================================================
   INTERACTIVE GUIDE TILES (TABLE OF CONTENTS)
   ========================================================================== */
.cvd-guide-index {
  background: #f8fafc;
  border: 1.5px solid var(--cvd-border-light);
  border-radius: var(--cvd-radius-lg);
  padding: 26px 28px;
  margin: 32px 0 42px;
}

.cvd-guide-index-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--cvd-border-light);
}

.cvd-guide-index-header svg {
  width: 20px;
  height: 20px;
  color: var(--cvd-brand-primary);
}

.cvd-guide-index-header h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--cvd-text-heading);
}

.cvd-guide-index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 10px 20px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.cvd-index-item {
  margin: 0;
}

.cvd-index-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--cvd-radius-sm);
  color: var(--cvd-text-heading);
  text-decoration: none !important;
  font-size: 0.95rem;
  font-weight: 600;
  background: #ffffff;
  border: 1px solid var(--cvd-border-light);
  transition: all 0.2s ease;
}

.cvd-index-link:hover {
  border-color: var(--cvd-brand-primary);
  background: var(--cvd-brand-subtle);
  color: var(--cvd-brand-primary);
  transform: translateX(2px);
}

.cvd-index-num {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--cvd-brand-primary);
  background: var(--cvd-brand-subtle);
  padding: 2px 7px;
  border-radius: var(--cvd-radius-xs);
  flex-shrink: 0;
}

/* ==========================================================================
   ARTICLE BODY & TYPOGRAPHY
   ========================================================================== */
.cvd-prose p {
  margin: 0 0 22px;
  line-height: 1.8;
}

.cvd-prose h2 {
  font-size: 1.7rem;
  line-height: 1.32;
  font-weight: 800;
  letter-spacing: -0.4px;
  color: var(--cvd-text-heading);
  margin: 50px 0 18px;
  padding-top: 20px;
  border-top: 1px solid #f1f5f9;
  scroll-margin-top: 85px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.cvd-prose h2::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 24px;
  background: linear-gradient(180deg, #4f46e5, #7c3aed);
  border-radius: var(--cvd-radius-full);
  flex-shrink: 0;
}

.cvd-prose h3 {
  font-size: 1.26rem;
  line-height: 1.4;
  font-weight: 700;
  color: var(--cvd-text-heading);
  margin: 34px 0 14px;
  scroll-margin-top: 85px;
}

.cvd-prose ul,
.cvd-prose ol {
  margin: 0 0 26px;
  padding-left: 24px;
}

.cvd-prose li {
  margin: 0 0 12px;
  line-height: 1.75;
}

.cvd-prose strong {
  color: var(--cvd-text-heading);
  font-weight: 700;
}

/* In-line links */
.cvd-prose p a,
.cvd-prose li a,
.cvd-prose td a {
  color: var(--cvd-brand-primary);
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
  transition: color 0.15s ease;
}

.cvd-prose p a:hover,
.cvd-prose li a:hover,
.cvd-prose td a:hover {
  color: #312e81;
}

.cvd-prose code {
  font-family: var(--cvd-font-mono);
  background: #f1f5f9;
  color: #1e293b;
  padding: 3px 8px;
  border-radius: var(--cvd-radius-xs);
  font-size: 0.88em;
  border: 1px solid #e2e8f0;
}

/* ==========================================================================
   CALLOUT BOXES & SECURITY ADVISORIES
   ========================================================================== */
.cvd-box {
  border-radius: var(--cvd-radius-md);
  padding: 22px 26px;
  margin: 32px 0;
  border: 1px solid;
  position: relative;
}

.cvd-box-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.cvd-box-header svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.cvd-box h4 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 800;
}

.cvd-box p:last-child {
  margin-bottom: 0;
}

/* Variant: Default Info */
.cvd-box--info {
  background: #f8fafc;
  border-color: #cbd5e1;
  border-left: 5px solid var(--cvd-brand-primary);
}

.cvd-box--info .cvd-box-header svg {
  color: var(--cvd-brand-primary);
}

.cvd-box--info h4 {
  color: var(--cvd-text-heading);
}

/* Variant: Warning / Caution */
.cvd-box--warn {
  background: var(--cvd-signal-amber-bg);
  border-color: var(--cvd-signal-amber-border);
  border-left: 5px solid var(--cvd-signal-amber);
}

.cvd-box--warn .cvd-box-header svg {
  color: var(--cvd-signal-amber);
}

.cvd-box--warn h4 {
  color: var(--cvd-signal-amber-text);
}

.cvd-box--warn p {
  color: #78350f;
}

/* Variant: Threat / Danger */
.cvd-box--danger {
  background: var(--cvd-signal-crimson-bg);
  border-color: var(--cvd-signal-crimson-border);
  border-left: 5px solid var(--cvd-signal-crimson);
}

.cvd-box--danger .cvd-box-header svg {
  color: var(--cvd-signal-crimson);
}

.cvd-box--danger h4 {
  color: var(--cvd-signal-crimson-text);
}

.cvd-box--danger p {
  color: #881337;
}

/* ==========================================================================
   MODULAR WORKFLOW STEPS (NUMBERED TIMELINE)
   ========================================================================== */
.cvd-timeline-list {
  counter-reset: flow-step;
  list-style: none;
  padding: 0;
  margin: 32px 0;
}

.cvd-timeline-item {
  position: relative;
  padding: 0 0 28px 56px;
  margin: 0;
}

.cvd-timeline-item::before {
  counter-increment: flow-step;
  content: counter(flow-step);
  position: absolute;
  left: 0;
  top: 0;
  width: 38px;
  height: 38px;
  border-radius: var(--cvd-radius-sm);
  background: linear-gradient(135deg, #1e1b4b, #4f46e5);
  color: #ffffff;
  font-weight: 800;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
}

.cvd-timeline-item::after {
  content: "";
  position: absolute;
  left: 18px;
  top: 44px;
  bottom: 0;
  width: 2px;
  background: #e2e8f0;
}

.cvd-timeline-item:last-child {
  padding-bottom: 0;
}

.cvd-timeline-item:last-child::after {
  display: none;
}

.cvd-timeline-item strong {
  display: block;
  font-size: 1.08rem;
  margin-bottom: 4px;
  color: var(--cvd-text-heading);
}

/* ==========================================================================
   MODERN MATRIX TABLES (DESKTOP VS MOBILE & PLATFORMS)
   ========================================================================== */
.cvd-matrix-wrap {
  overflow-x: auto;
  margin: 28px 0;
  border: 1px solid var(--cvd-border-light);
  border-radius: var(--cvd-radius-md);
  box-shadow: var(--cvd-shadow-subtle);
}

.cvd-matrix {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.96rem;
  background: #ffffff;
}

.cvd-matrix th,
.cvd-matrix td {
  text-align: left;
  padding: 14px 18px;
  border-bottom: 1px solid var(--cvd-border-light);
}

.cvd-matrix th {
  background: #f8fafc;
  color: var(--cvd-text-heading);
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.cvd-matrix tbody tr:last-child td {
  border-bottom: none;
}

.cvd-matrix tbody tr:hover {
  background: #f8faff;
}

.cvd-badge-file {
  display: inline-block;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  padding: 3px 9px;
  border-radius: var(--cvd-radius-xs);
  font-weight: 700;
  font-size: 0.82rem;
  color: #1e40af;
}

/* ==========================================================================
   FEATURE CARDS GRID
   ========================================================================== */
.cvd-feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin: 30px 0;
}

.cvd-feature-card {
  background: #f8fafc;
  border: 1.5px solid var(--cvd-border-light);
  border-radius: var(--cvd-radius-md);
  padding: 22px;
  transition: all 0.2s ease;
}

.cvd-feature-card:hover {
  transform: translateY(-2px);
  border-color: #818cf8;
  background: #ffffff;
  box-shadow: var(--cvd-shadow-card);
}

.cvd-feature-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.cvd-feature-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--cvd-radius-sm);
  background: var(--cvd-brand-subtle);
  color: var(--cvd-brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cvd-feature-icon svg {
  width: 18px;
  height: 18px;
}

.cvd-feature-card h4 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--cvd-text-heading);
}

.cvd-feature-card p {
  margin: 0;
  font-size: 0.94rem;
  color: var(--cvd-text-muted);
  line-height: 1.6;
}

/* Threat Radar Card */
.cvd-threat-card {
  background: #fffafa;
  border: 1.5px solid #fecdd3;
  border-radius: var(--cvd-radius-md);
  padding: 22px;
  transition: all 0.2s ease;
}

.cvd-threat-card:hover {
  transform: translateY(-2px);
  border-color: #f43f5e;
  box-shadow: 0 4px 14px rgba(225, 29, 72, 0.1);
}

.cvd-threat-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--cvd-radius-sm);
  background: #ffe4e6;
  color: #e11d48;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cvd-threat-icon svg {
  width: 18px;
  height: 18px;
}

.cvd-threat-card h4 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  color: #9f1239;
}

.cvd-threat-card p {
  margin: 0;
  font-size: 0.94rem;
  color: #64748b;
  line-height: 1.6;
}

/* ==========================================================================
   OFFICIAL DOWNLOAD CARD & EXECUTIVE BUTTONS (100% CONTRAST GUARANTEE)
   ========================================================================== */
.cvd-download-hub {
  background: linear-gradient(145deg, #090d16 0%, #111827 50%, #1e1b4b 100%);
  border: 1.5px solid rgba(99, 102, 241, 0.35);
  border-radius: var(--cvd-radius-lg);
  padding: 40px 32px;
  margin: 40px 0;
  text-align: center;
  color: #ffffff;
  box-shadow: 0 10px 30px rgba(9, 13, 22, 0.4);
  position: relative;
  overflow: hidden;
}

.cvd-download-hub::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #4f46e5, #818cf8, #38bdf8, #f59e0b);
}

.cvd-download-hub-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  background: rgba(255, 255, 255, 0.1);
  border: 1.5px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #818cf8;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.cvd-download-hub-icon svg {
  width: 28px;
  height: 28px;
}

.cvd-download-hub h3 {
  margin: 0 0 12px;
  font-size: 1.55rem;
  font-weight: 800;
  color: #ffffff;
}

.cvd-download-hub p {
  color: #cbd5e1;
  font-size: 1.05rem;
  max-width: 620px;
  margin: 0 auto 28px;
  line-height: 1.65;
}

/* BUTTONS - HIGH CONTRAST & BULLETPROOF SPECIFICITY */
a.cvd-btn-primary,
.cvd-btn-primary,
.cvd-prose a.cvd-btn-primary,
.cvd-download-hub a.cvd-btn-primary {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 12px !important;
  background: linear-gradient(135deg, #4f46e5 0%, #6366f1 100%) !important;
  color: #ffffff !important;
  font-size: 1.1rem !important;
  font-weight: 800 !important;
  letter-spacing: 0.2px !important;
  padding: 16px 36px !important;
  border-radius: var(--cvd-radius-md) !important;
  text-decoration: none !important;
  border: 1px solid rgba(255, 255, 255, 0.3) !important;
  box-shadow: var(--cvd-shadow-indigo) !important;
  transition: all 0.22s ease !important;
  cursor: pointer !important;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.25) !important;
}

a.cvd-btn-primary *,
.cvd-btn-primary *,
.cvd-prose a.cvd-btn-primary * {
  color: #ffffff !important;
  stroke: #ffffff !important;
}

a.cvd-btn-primary:hover,
.cvd-btn-primary:hover,
.cvd-prose a.cvd-btn-primary:hover,
.cvd-download-hub a.cvd-btn-primary:hover {
  background: linear-gradient(135deg, #4338ca 0%, #4f46e5 100%) !important;
  color: #ffffff !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 14px 28px -4px rgba(79, 70, 229, 0.5) !important;
  text-decoration: none !important;
}

.cvd-download-hub small {
  display: block;
  margin-top: 18px;
  color: #94a3b8;
  font-size: 0.84rem;
}

/* Secondary Guide Interlink Card */
.cvd-interlink-banner {
  background: #f8fafc;
  border: 1.5px solid #cbd5e1;
  border-radius: var(--cvd-radius-lg);
  padding: 24px 28px;
  margin: 36px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.cvd-interlink-info h4 {
  margin: 0 0 6px;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--cvd-text-heading);
}

.cvd-interlink-info p {
  margin: 0;
  color: var(--cvd-text-muted);
  font-size: 0.95rem;
}

a.cvd-btn-secondary,
.cvd-btn-secondary,
.cvd-prose a.cvd-btn-secondary {
  display: inline-flex !important;
  align-items: center !important;
  gap: 8px !important;
  background: #ffffff !important;
  color: #4f46e5 !important;
  border: 2px solid #4f46e5 !important;
  font-weight: 700 !important;
  padding: 10px 22px !important;
  border-radius: var(--cvd-radius-md) !important;
  text-decoration: none !important;
  transition: all 0.2s ease !important;
  white-space: nowrap !important;
  box-shadow: var(--cvd-shadow-subtle) !important;
}

a.cvd-btn-secondary *,
.cvd-btn-secondary * {
  color: #4f46e5 !important;
  stroke: #4f46e5 !important;
}

a.cvd-btn-secondary:hover,
.cvd-btn-secondary:hover,
.cvd-prose a.cvd-btn-secondary:hover {
  background: var(--cvd-brand-subtle) !important;
  color: #312e81 !important;
  border-color: #312e81 !important;
  text-decoration: none !important;
  box-shadow: var(--cvd-shadow-card) !important;
}

/* ==========================================================================
   FAQ ACCORDION
   ========================================================================== */
.cvd-faq-deck {
  margin: 28px 0 40px;
}

.cvd-faq-deck details {
  background: #ffffff;
  border: 1.5px solid var(--cvd-border-light);
  border-radius: var(--cvd-radius-md);
  padding: 6px 20px;
  margin-bottom: 14px;
  transition: all 0.2s ease;
}

.cvd-faq-deck details[open] {
  border-color: #818cf8;
  box-shadow: var(--cvd-shadow-card);
}

.cvd-faq-deck summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--cvd-text-heading);
  padding: 14px 0;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  user-select: none;
}

.cvd-faq-deck summary::-webkit-details-marker {
  display: none;
}

.cvd-faq-deck summary::after {
  content: "";
  display: inline-block;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--cvd-text-muted);
  border-bottom: 2px solid var(--cvd-text-muted);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.cvd-faq-deck details[open] summary::after {
  transform: rotate(-135deg);
  border-color: var(--cvd-brand-primary);
}

.cvd-faq-deck p {
  margin: 0 0 16px;
  color: var(--cvd-text-body);
  line-height: 1.7;
}

/* ==========================================================================
   FOOTER (OBSIDIAN DARK THEME)
   ========================================================================== */
.cvd-footer-dark {
  background: #090d16;
  border-top: 1px solid #1e293b;
  color: #94a3b8;
  font-size: 0.92rem;
  padding: 56px 0 42px;
  margin-top: 60px;
}

.cvd-footer-container {
  max-width: var(--cvd-wide-width);
  margin: 0 auto;
  padding: 0 24px;
}

.cvd-footer-brand-line {
  color: #f8fafc;
  font-size: 1.05rem;
  margin-bottom: 14px;
}

.cvd-footer-brand-line strong {
  color: #ffffff;
}

.cvd-footer-dark p {
  margin: 0 0 14px;
  line-height: 1.7;
}

.cvd-footer-nav-row {
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid #1e293b;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
}

.cvd-footer-nav-row a {
  color: #f8fafc;
  font-weight: 600;
  text-decoration: none;
  transition: color 0.15s ease;
}

.cvd-footer-nav-row a:hover {
  color: #818cf8;
  text-decoration: underline;
}

/* ==========================================================================
   RESPONSIVE DESIGN (MOBILE & TABLET)
   ========================================================================== */
@media (max-width: 820px) {
  .cvd-article-canvas {
    padding: 32px 22px;
    margin: 16px auto 40px;
    border-radius: var(--cvd-radius-md);
  }

  .cvd-headline {
    font-size: 1.85rem;
  }

  .cvd-subheading-lede {
    font-size: 1.1rem;
  }

  .cvd-nav-menu {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid var(--cvd-border-light);
    padding: 18px 24px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  }

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

  .cvd-mobile-toggle {
    display: block;
  }

  .cvd-download-hub {
    padding: 30px 20px;
  }

  a.cvd-btn-primary,
  .cvd-btn-primary {
    width: 100%;
    padding: 14px 20px !important;
  }
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--cvd-brand-primary);
  outline-offset: 3px;
}