/* ==========================================================================
   MSC Editorial Publication & Blog Stylesheet (blog/blog.css)
   Full-bleed edge-to-edge editorial hero, 1560px canvas, high-legibility
   longform typography, persistently docked sidebar reading companion (zero gap),
   and sessions-matched dark luxury footer.
   ========================================================================== */

:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #334155;
  --body-text: #475569;
  --heading: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --indigo: #4f46e5;
  --indigo-dark: #4338ca;
  --blue: #3b82f6;
  --blue-tint: #eff6ff;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 24px -4px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 16px 36px -6px rgba(15, 23, 42, 0.08);
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-body: 'Merriweather', Georgia, serif;
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 1100;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
  color: #fff;
}

/* ── Reading Progress Bar ─────────────────────────────────────────────── */
.reading-progress-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 1002;
  background: transparent;
}

.reading-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #2563eb, #6366f1 60%, #38bdf8 100%);
  transition: width 0.15s ease-out;
}

/* ── Floating Header (1560px Canvas) ─────────────────────────────────── */
.floating-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.94);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.85);
  transition: box-shadow 0.25s ease, background-color 0.25s ease;
}

.floating-header.scrolled {
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
}

.header-inner {
  max-width: 1560px;
  width: 100%;
  margin: 0 auto;
  padding: 0.85rem clamp(20px, 3.5vw, 48px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.brand-link:hover {
  transform: scale(1.02);
}

.brand-logo {
  height: 36px;
  width: auto;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-nav a {
  color: #475569;
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  white-space: nowrap;
  padding: 0.45rem 1.1rem;
  border-radius: 99px;
  transition: all 0.2s ease;
}

.header-nav a:not(.header-login):hover {
  color: var(--accent);
  background-color: rgba(37, 99, 235, 0.08);
}

.header-login {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  padding: 0 !important;
  border-radius: 50% !important;
  color: #475569 !important;
  background: #f1f5f9;
  transition: all 0.2s ease;
}

.header-login svg {
  width: 20px;
  height: 20px;
  transition: transform 0.2s ease;
}

.header-login:hover {
  background: #e0e7ff !important;
  color: var(--indigo) !important;
  transform: scale(1.05);
}

/* ── Full-Bleed Page Framework ────────────────────────────────────────── */
.blog-main {
  width: 100%;
  max-width: 100%;
  margin: 0;
  padding: 0;
}

.blog-container {
  width: 100%;
  max-width: 100%;
  background: transparent;
  border: none;
  border-radius: 0;
  box-shadow: none;
  overflow: visible;
}

/* ── Full-Bleed Editorial Hero (Seamless Edge-to-Edge) ────────────────── */
.blog-header {
  width: 100%;
  box-sizing: border-box;
  padding: clamp(6.25rem, 8.5vw, 7.5rem) clamp(20px, 3.5vw, 48px) clamp(3.25rem, 5vw, 4.25rem);
  background: #1e40af;
  background-image:
    radial-gradient(ellipse 80% 60% at 85% 15%, rgba(255, 255, 255, 0.22) 0%, transparent 55%),
    radial-gradient(circle at 10% 85%, rgba(37, 99, 235, 0.35) 0%, transparent 50%),
    linear-gradient(135deg, #1d4ed8 0%, #2563eb 45%, #3b82f6 80%, #60a5fa 100%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.22);
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.blog-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.6) 50%, transparent 100%);
}

.blog-header-inner {
  max-width: 1560px;
  width: 100%;
  margin: 0 auto;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

.blog-header > * {
  max-width: 1560px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  box-sizing: border-box;
  text-align: left;
}

.blog-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.84rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.88);
  margin: 0 0 1.25rem 0;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  text-align: left;
}

.blog-breadcrumb a {
  color: rgba(255, 255, 255, 0.88);
  transition: color 0.15s ease;
}

.blog-breadcrumb a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.blog-breadcrumb .sep {
  opacity: 0.65;
  color: rgba(255, 255, 255, 0.75);
}

.blog-title {
  margin: 0 0 1.5rem 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(2.25rem, 4.2vw, 3.6rem);
  line-height: 1.18;
  color: #ffffff;
  letter-spacing: -0.015em;
  max-width: 1260px;
  width: 100%;
  text-align: left;
  text-shadow: 0 2px 14px rgba(15, 23, 42, 0.28);
}

.blog-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem 2rem;
  padding-top: 1.35rem;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.92);
  width: 100%;
  text-align: left;
}

.blog-meta {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.95);
  text-align: left;
}

.blog-meta svg {
  width: 18px;
  height: 18px;
  color: #ffffff;
  opacity: 0.95;
  flex-shrink: 0;
}

.blog-hero-author {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
}

.blog-hero-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: #ffffff;
  color: #1d4ed8;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
  border: 2px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.blog-hero-author-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.blog-hero-author-name {
  font-weight: 600;
  color: #ffffff;
  font-size: 0.95rem;
}

.blog-hero-author-title {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.82);
}

/* ── Article Body (1560px Container with Asymmetric 2-Column Grid) ────── */
.blog-body {
  max-width: 1560px;
  width: 100%;
  margin: 0 auto;
  padding: clamp(2.5rem, 4vw, 4.5rem) clamp(20px, 3.5vw, 48px);
  box-sizing: border-box;
}

@media (min-width: 1080px) {
  .blog-body {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 370px;
    column-gap: clamp(48px, 4.5vw, 76px);
    align-items: start;
  }

  .post-tags,
  .prose,
  .cta-box,
  .post-footer {
    grid-column: 1;
    max-width: 980px;
  }

  /* Sticky sidebar pinned throughout long reads - NO dead space */
  .blog-sidebar {
    grid-column: 2;
    grid-row: 1 / span 6;
    position: sticky;
    top: 86px;
    max-height: calc(100vh - 96px);
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: #cbd5e1 transparent;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    padding-bottom: 2rem;
  }

  .blog-sidebar::-webkit-scrollbar {
    width: 5px;
  }

  .blog-sidebar::-webkit-scrollbar-thumb {
    background-color: #cbd5e1;
    border-radius: 999px;
  }
}

@media (max-width: 1079px) {
  .blog-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
  }
}

/* ── Tags Strip ──────────────────────────────────────────────────────── */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
  font-size: 0.88rem;
  color: var(--muted);
}

.post-tag {
  background: #eef2ff;
  color: #3730a3;
  border: 1px solid #e0e7ff;
  padding: 0.35rem 0.95rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.post-read {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 500;
  color: #64748b;
  font-size: 0.88rem;
}

/* ── Bottom Promo Cards (Matches "More Guides from MSC" 1560px Grid) ────── */
.bottom-promo-cards {
  max-width: 1560px;
  width: 100%;
  margin: 3.5rem auto 0;
  padding: 0 clamp(20px, 3.5vw, 48px);
  box-sizing: border-box;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .bottom-promo-cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

.promo-more-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 100%;
  box-sizing: border-box;
}

.promo-card-desc {
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.55;
  margin: 0;
  flex: 1;
}

.promo-card-action {
  margin-top: auto;
  color: #1d4ed8;
  font-size: 0.86rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: color 0.15s ease, transform 0.15s ease;
}

.promo-more-card:hover .promo-card-action,
.promo-card-action:hover {
  color: var(--accent);
  transform: translateX(3px);
}

.promo-tools-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: auto;
}

.promo-tool-item {
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  color: #334155;
  font-size: 0.84rem;
  font-weight: 600;
  text-decoration: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.18s ease;
}

.promo-tool-item .tool-arrow {
  color: #2563eb;
  font-weight: 700;
  transition: transform 0.15s ease;
}

.promo-tool-item:hover {
  background: #eff6ff;
  border-color: #bfdbfe;
  color: #1d4ed8;
}

.promo-tool-item:hover .tool-arrow {
  transform: translateX(3px);
}

.sidebar-widget {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.35rem 1.25rem;
  box-shadow: 0 4px 14px -2px rgba(15, 23, 42, 0.04);
}

.sidebar-widget-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #0f172a;
  margin: 0 0 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}



.sidebar-widget-title svg {
  width: 16px;
  height: 16px;
  color: var(--accent);
}

/* Progress Tracker Widget */
.sidebar-tracker-bar {
  width: 100%;
  height: 6px;
  background: #f1f5f9;
  border-radius: 999px;
  overflow: hidden;
  margin: 0.6rem 0 0.4rem;
}

.sidebar-tracker-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #2563eb, #6366f1);
  border-radius: 999px;
  transition: width 0.15s ease-out;
}

.sidebar-tracker-stats {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: #64748b;
  font-weight: 500;
}

/* Dynamic Table of Contents */
.toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.toc-link {
  display: block;
  font-size: 0.86rem;
  line-height: 1.45;
  color: #64748b;
  padding: 0.4rem 0.65rem;
  border-radius: 8px;
  border-left: 2.5px solid transparent;
  transition: all 0.15s ease;
  text-decoration: none;
}

.toc-link:hover {
  color: var(--accent);
  background: #f8fafc;
}

.toc-link.active {
  color: var(--accent);
  background: #eff6ff;
  border-left-color: var(--accent);
  font-weight: 600;
}

/* Sidebar Author Box */
.sidebar-author {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.sidebar-author-top {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.sidebar-author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1d4ed8 0%, #4f46e5 100%);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.2);
}

.sidebar-author-info h4 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--heading);
}

.sidebar-author-info p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.sidebar-author-bio {
  font-size: 0.84rem;
  line-height: 1.55;
  color: #64748b;
  margin: 0;
}

.sidebar-author-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.84rem;
  font-weight: 600;
  color: #0a66c2;
  text-decoration: none;
}

.sidebar-author-link:hover {
  text-decoration: underline;
}

/* Sidebar Sessions & Community Card */
.sidebar-promo-card {
  background: linear-gradient(135deg, #09121f 0%, #172554 100%);
  color: #ffffff;
  border-radius: var(--radius-md);
  padding: 1.35rem 1.25rem;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 24px -4px rgba(15, 23, 42, 0.12);
}

.sidebar-promo-card::before {
  content: '';
  position: absolute;
  top: 0; right: 0; width: 140px; height: 140px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.25) 0%, transparent 70%);
  pointer-events: none;
}

.sidebar-promo-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 0.45rem;
}

.sidebar-promo-text {
  font-size: 0.82rem;
  color: #cbd5e1;
  line-height: 1.5;
  margin: 0 0 1rem;
}

.sidebar-promo-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  width: 100%;
  padding: 0.65rem 1rem;
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #ffffff !important;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 10px;
  text-decoration: none;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.sidebar-promo-btn:hover {
  background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
  transform: translateY(-1px);
}

/* ── Long-Form Editorial Prose ───────────────────────────────────────── */
.prose {
  font-family: var(--font-body);
  color: var(--body-text);
  font-size: 1.12rem;
  line-height: 1.88;
}

.prose p,
.prose ul,
.prose ol,
.prose blockquote,
.prose pre,
.prose .table-wrap {
  margin: 0 0 1.75rem;
}

.prose h2,
.prose h3 {
  font-family: var(--font-sans);
  color: var(--heading);
  line-height: 1.3;
  scroll-margin-top: 100px;
}

.prose h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 3.25rem 0 1.25rem;
  letter-spacing: -0.015em;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid var(--border-light);
}

.prose h3 {
  font-size: 1.32rem;
  font-weight: 600;
  margin: 2.35rem 0 0.95rem;
}

.prose > h2:first-child {
  margin-top: 0.5rem;
}

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

.prose ul,
.prose ol {
  padding-left: 1.6rem;
}

.prose li {
  margin: 0.55rem 0;
  padding-left: 0.3rem;
}

.prose li > ul,
.prose li > ol {
  margin: 0.55rem 0 0.85rem;
}

.prose li > p {
  margin: 0 0 0.7rem;
}

.prose ul li::marker {
  color: var(--accent);
}

.prose ol li::marker {
  color: var(--indigo);
  font-weight: 700;
  font-family: var(--font-sans);
}

.prose a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 500;
}

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

.prose blockquote {
  padding: 1.35rem 1.65rem;
  border-left: 4px solid var(--accent);
  background: var(--blue-tint);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 1.05rem;
  font-style: italic;
  color: #1e293b;
}

.prose blockquote p {
  margin: 0 0 0.75rem;
}

.prose blockquote p:last-child {
  margin-bottom: 0;
}

.prose code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: #f1f5f9;
  padding: 0.15rem 0.45rem;
  border-radius: 5px;
  color: #0f172a;
  overflow-wrap: anywhere;
}

.prose pre {
  background: #0f172a;
  color: #e2e8f0;
  padding: 1.35rem 1.5rem;
  border-radius: var(--radius-md);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 0.9rem;
  line-height: 1.65;
}

.prose pre code {
  background: none;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

/* ── Polished Tables (Full Responsive Scroller) ──────────────────────── */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
  margin: 2.25rem 0;
  background: #ffffff;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-sans);
  font-size: 0.94rem;
  line-height: 1.65;
}

.prose th,
.prose td {
  padding: 1rem 1.35rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
  min-width: 11rem;
}

.prose th {
  background: #f8fafc;
  color: var(--heading);
  font-weight: 700;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--border);
}

.prose tr:nth-child(even) td {
  background: #fcfdfe;
}

.prose tr:hover td {
  background: #f1f5f9;
}

.prose tr:last-child td {
  border-bottom: 0;
}

/* ── High-Converting Next Step CTA Box ───────────────────────────────── */
.cta-box {
  margin: 3.5rem 0 1.75rem;
  padding: 2rem 2.25rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #eef2ff 0%, #eff6ff 100%);
  border: 1px solid #c7d2fe;
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.06);
}

.cta-title {
  margin: 0 0 1.15rem;
  font-weight: 700;
  color: var(--heading);
  font-size: 1.25rem;
  font-family: var(--font-sans);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0.8rem 1.65rem;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.98rem;
  font-family: var(--font-sans);
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  min-height: 48px;
}

.cta-free {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #fff !important;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.28);
}

.cta-free:hover {
  background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.38);
}

.cta-program {
  background: #ffffff;
  color: #1e293b !important;
  border: 1.5px solid #cbd5e1;
  box-shadow: var(--shadow-sm);
}

.cta-program:hover {
  background: #f8fafc;
  border-color: #94a3b8;
  color: #0f172a !important;
  transform: translateY(-1px);
}

/* ── Post Footer: Author & Share ─────────────────────────────────────── */
.post-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.author {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.author-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  flex-shrink: 0;
  object-fit: cover;
  object-position: top center;
  background: #f1f5f9;
  border: 2px solid #e2e8f0;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
}

.sidebar-author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  flex-shrink: 0;
  object-fit: cover;
  object-position: top center;
  background: #f1f5f9;
  border: 1.5px solid #e2e8f0;
}

.author-label {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.author-name {
  margin: 0;
  font-size: 0.98rem;
  color: var(--heading);
  font-weight: 600;
}

.author-name a {
  color: var(--heading);
}

.author-name a:hover {
  color: var(--accent);
}

.share {
  position: relative;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  cursor: pointer;
  padding: 0.65rem 1.35rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #ffffff;
  color: #334155;
  font: 600 0.92rem var(--font-sans);
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.share-btn:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
  color: var(--heading);
  transform: translateY(-1px);
}

.share-btn svg {
  width: 17px;
  height: 17px;
  color: var(--accent);
}

.copied-tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: #0f172a;
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.85rem;
  border-radius: 8px;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
  box-shadow: var(--shadow-md);
}

.copied-tooltip.show {
  opacity: 1;
  transform: translateX(-50%) translateY(-2px);
}

/* ── "More Guides from MSC" (1560px Grid) ────────────────────────────── */
.more-guides {
  max-width: 1560px;
  width: 100%;
  margin: 4.5rem auto 0;
  padding: 0 clamp(20px, 3.5vw, 48px);
  box-sizing: border-box;
}

.more-guides h2 {
  font-size: clamp(1.45rem, 2.6vw, 1.95rem);
  color: var(--heading);
  margin: 0 0 1.75rem;
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: -0.015em;
}

.more-grid {
  display: grid;
  gap: 1.5rem;
}

.more-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.65rem;
  text-decoration: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.03);
  transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.more-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #3b82f6, #6366f1);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.more-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px -4px rgba(15, 23, 42, 0.08);
  border-color: #cbd5e1;
}

.more-card:hover::before {
  opacity: 1;
}

.more-tag {
  align-self: flex-start;
  background: #eff6ff;
  color: #1d4ed8;
  border: 1px solid #dbeafe;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.more-title {
  color: var(--heading);
  font-weight: 700;
  font-size: 1.1rem;
  line-height: 1.45;
  font-family: var(--font-sans);
  transition: color 0.15s ease;
}

.more-card:hover .more-title {
  color: var(--accent);
}

.more-read {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* ── Sessions-Matched Dark High-Polish Footer (1560px) ───────────────── */
.page-footer,
.site-footer {
  background: #080f1d;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: #94a3b8;
  font-size: 0.88rem;
  margin-top: 5rem;
  position: relative;
  overflow: hidden;
}

.page-footer::before,
.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(56, 189, 248, 0.5) 50%, transparent 100%);
}

.footer-container {
  max-width: 1560px;
  width: 100%;
  margin: 0 auto;
  padding: 3.5rem clamp(20px, 3.5vw, 48px) 1.5rem;
  box-sizing: border-box;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.25fr 2.75fr;
  gap: clamp(1.5rem, 3.5vw, 3.5rem);
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.85rem;
}

.footer-logo {
  height: 32px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.95;
}

.footer-tagline {
  font-size: 0.875rem;
  line-height: 1.6;
  color: #94a3b8;
  max-width: 380px;
  margin: 0;
}

.footer-social-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.4rem;
}

.social-btn {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #cbd5e1;
  text-decoration: none;
  transition: all 0.22s ease;
}

.social-btn svg {
  width: 16px;
  height: 16px;
}

.social-btn:hover {
  transform: translateY(-2px);
  color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

.social-btn.yt:hover { background: #ef4444; border-color: #ef4444; color: #fff; }
.social-btn.in:hover { background: #0a66c2; border-color: #0a66c2; color: #fff; }
.social-btn.ig:hover { background: #e1306c; border-color: #e1306c; color: #fff; }
.social-btn.wa:hover { background: #25d366; border-color: #25d366; color: #fff; }

.footer-nav-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 3vw, 3rem);
}

.footer-heading {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #f1f5f9;
  margin: 0 0 0.85rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.footer-links a {
  color: #94a3b8;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s ease, transform 0.2s ease;
  display: inline-block;
}

.footer-links a:hover {
  color: #38bdf8;
  transform: translateX(2px);
}

.footer-bottom-bar {
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: #64748b;
}

.footer-copyright {
  color: #94a3b8;
}

.footer-guarantee {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: #10b981;
  font-weight: 500;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  margin: 0;
  font-size: 0.8rem;
}

/* ── Responsive Breakpoints ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .footer-top-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .header-inner {
    padding: 0.6rem 16px;
    gap: 0.75rem;
  }

  .brand-logo {
    height: 28px;
    width: auto;
  }

  .header-nav {
    gap: 0.45rem;
  }

  .header-nav a:not(.header-login) {
    padding: 0.35rem 0.8rem;
    font-size: 0.8rem;
  }

  .header-login {
    width: 34px;
    height: 34px;
  }

  .blog-header {
    padding: 5.5rem 16px 2.5rem;
  }

  .blog-title {
    font-size: clamp(1.85rem, 5vw, 2.5rem);
    line-height: 1.2;
    margin-bottom: 1.15rem;
  }

  .blog-body {
    padding: 2rem 16px 3.5rem;
  }

  .blog-hero-author {
    gap: 0.65rem;
  }
}

@media (max-width: 640px) {
  .footer-nav-columns {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .cta-btn {
    width: 100%;
  }

  .blog-meta-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
}

@media (max-width: 480px) {
  .header-inner {
    padding: 0.5rem 12px;
    gap: 0.35rem;
  }

  .brand-logo {
    height: 24px;
  }

  .header-nav {
    gap: 0.3rem;
  }

  .header-nav a:not(.header-login) {
    padding: 0.3rem 0.55rem;
    font-size: 0.72rem;
  }

  .header-login {
    width: 30px;
    height: 30px;
  }

  .header-login svg {
    width: 15px;
    height: 15px;
  }

  .blog-breadcrumb {
    font-size: 0.75rem;
    margin-bottom: 0.85rem;
  }

  .blog-title {
    font-size: 1.65rem;
  }

  .author-meta-block span:first-child {
    font-size: 0.85rem;
  }

  .author-meta-block span:last-child {
    font-size: 0.75rem;
  }
}

@media (max-width: 360px) {
  .header-inner {
    padding: 0.45rem 8px;
  }

  .brand-logo {
    height: 21px;
  }

  .header-nav a:not(.header-login) {
    padding: 0.25rem 0.45rem;
    font-size: 0.68rem;
  }
}

@media (min-width: 640px) {
  .more-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 1079px) {
  .tracker-widget,
  .toc-widget {
    display: none !important;
  }

  .bottom-promo-cards {
    margin-top: 1rem;
    padding-top: 1.25rem;
    gap: 0.75rem;
  }

  .blog-body {
    padding-top: 1.5rem;
    padding-bottom: 2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    scroll-behavior: auto !important;
  }
}