/* ==========================================================================
   Organized Freight Insights — Design System
   ========================================================================== */

:root {
  --bg-primary: #0B1220;
  --bg-secondary: #111827;
  --panel: #172033;
  --card: #1E293B;
  --card-hover: #232f47;

  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);

  --blue: #3B82F6;
  --blue-hover: #4F8EF7;
  --cyan: #22D3EE;
  --green: #10B981;
  --orange: #F59E0B;
  --red: #EF4444;

  --text-primary: #E5E7EB;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;

  --radius: 16px;
  --radius-sm: 10px;
  --radius-pill: 999px;

  --shadow-soft: 0 8px 24px rgba(0, 0, 0, 0.25);
  --shadow-lift: 0 12px 32px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 0 1px rgba(59, 130, 246, 0.35), 0 12px 32px rgba(59, 130, 246, 0.12);

  --transition: all 0.2s ease;

  --max-width: 1400px;
}

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

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

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input,
textarea {
  font-family: inherit;
}

/* ----- Layout ----- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 80px 0;
}

@media (max-width: 768px) {
  section {
    padding: 48px 0;
  }
}

/* ----- Typography ----- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

h1 { font-size: clamp(2rem, 4.5vw, 3rem); line-height: 1.1; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.25rem); line-height: 1.2; }
h3 { font-size: 1.5rem; line-height: 1.3; font-weight: 600; }
h4 { font-size: 1.125rem; font-weight: 600; }

p { color: var(--text-secondary); }

.eyebrow {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--cyan);
  margin-bottom: 12px;
}

.section-header {
  margin-bottom: 40px;
  max-width: 720px;
}

.section-header h2 {
  margin-bottom: 12px;
}

.section-header p {
  font-size: 1.0625rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   Navbar
   ========================================================================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 18, 32, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--text-primary);
  line-height: 1;
}

.logo-mark {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  display: block;
}

.logo-mark svg {
  width: 100%;
  height: 100%;
  display: block;
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.logo-text b {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  line-height: 1;
}

.logo-text span {
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
  background: var(--card);
}

.nav-links a.active {
  color: var(--text-primary);
  background: var(--card);
}

.nav-cta {
  background: var(--blue) !important;
  color: white !important;
  padding: 9px 16px !important;
  box-shadow: 0 6px 16px rgba(59, 130, 246, 0.25);
}

.nav-cta:hover {
  background: var(--blue-hover) !important;
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

@media (max-width: 860px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
  }

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

  .nav-toggle {
    display: flex;
  }
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
  cursor: pointer;
}

.btn-primary {
  background: var(--blue);
  color: white;
  box-shadow: 0 8px 20px rgba(59, 130, 246, 0.25);
}

.btn-primary:hover {
  background: var(--blue-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(59, 130, 246, 0.35);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
}

.btn-secondary:hover {
  background: var(--card);
  border-color: rgba(255, 255, 255, 0.22);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 8px 14px;
}

.btn-ghost:hover {
  color: var(--blue);
  background: rgba(59, 130, 246, 0.08);
}

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  transition: var(--transition);
}

.btn-link:hover {
  color: var(--cyan);
  gap: 10px;
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  padding: 80px 0 64px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 600px;
  background: radial-gradient(ellipse at center, rgba(59, 130, 246, 0.18), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at top, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at top, black 30%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.2);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 500;
  color: var(--cyan);
  margin-bottom: 20px;
}

.hero-tag .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}

.hero h1 {
  margin-bottom: 18px;
  max-width: 820px;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.4vw, 1.1875rem);
  color: var(--text-secondary);
  max-width: 720px;
  margin-bottom: 36px;
}

/* Search */
.search-wrap {
  position: relative;
  max-width: 640px;
  margin-bottom: 28px;
}

.search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  height: 56px;
  padding: 0 56px 0 50px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 15px;
  outline: none;
  transition: var(--transition);
}

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

.search-input:focus {
  border-color: rgba(59, 130, 246, 0.5);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.12);
  background: var(--panel);
}

.search-shortcut {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  padding: 4px 8px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  font-family: ui-monospace, monospace;
}

/* Category chips */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}

.chip:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

.chip.active {
  background: rgba(59, 130, 246, 0.12);
  border-color: rgba(59, 130, 246, 0.4);
  color: var(--blue);
}

.chip .count {
  margin-left: 8px;
  padding: 1px 7px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-pill);
  font-size: 11px;
  color: var(--text-muted);
}

.chip.active .count {
  background: rgba(59, 130, 246, 0.18);
  color: var(--blue);
}

/* ==========================================================================
   Featured Articles
   ========================================================================== */
.featured-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 24px;
}

@media (max-width: 960px) {
  .featured-grid {
    grid-template-columns: 1fr;
  }
}

.featured-secondary {
  display: grid;
  gap: 24px;
}

/* Card base */
.card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card:hover {
  background: var(--card-hover);
  border-color: var(--border-strong);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}

.card-image {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  margin: -4px 0 22px;
  background: var(--panel);
  overflow: hidden;
  border: 1px solid var(--border);
}

.card-image-pattern {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}

.card-image-pattern svg {
  width: 100%;
  height: 100%;
}

.featured-main .card-image {
  aspect-ratio: 16 / 8.5;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 14px;
  font-size: 12px;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 11px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-pill);
  font-size: 11px;
  font-weight: 600;
  color: var(--blue);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.tag[data-tag="freight-tools"] { background: rgba(34, 211, 238, 0.08); border-color: rgba(34, 211, 238, 0.22); color: var(--cyan); }
.tag[data-tag="broker-sales"] { background: rgba(245, 158, 11, 0.08); border-color: rgba(245, 158, 11, 0.22); color: var(--orange); }
.tag[data-tag="quoting-pricing"] { background: rgba(16, 185, 129, 0.08); border-color: rgba(16, 185, 129, 0.22); color: var(--green); }
.tag[data-tag="operations"] { background: rgba(59, 130, 246, 0.1); border-color: rgba(59, 130, 246, 0.22); color: var(--blue); }
.tag[data-tag="shipper-resources"] { background: rgba(168, 85, 247, 0.08); border-color: rgba(168, 85, 247, 0.22); color: #C084FC; }

.dot-sep {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-muted);
}

.read-time {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--text-muted);
}

.card-title {
  font-size: 1.375rem;
  line-height: 1.3;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.featured-main .card-title {
  font-size: 1.75rem;
}

.card-desc {
  font-size: 14.5px;
  color: var(--text-secondary);
  margin-bottom: 22px;
  flex: 1;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 4px;
}

.card-date {
  font-size: 12px;
  color: var(--text-muted);
}

/* ==========================================================================
   Article Grid
   ========================================================================== */
.articles-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 32px;
  gap: 24px;
}

.articles-count {
  font-size: 13px;
  color: var(--text-muted);
}

.articles-count b {
  color: var(--text-primary);
  font-weight: 600;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 980px) {
  .article-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .article-grid { grid-template-columns: 1fr; }
}

.article-card .card-title {
  font-size: 1.1875rem;
}

/* Empty state */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 64px 24px;
  background: var(--card);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
}

.empty-state-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  margin: 0 auto 16px;
  background: var(--panel);
  border-radius: 12px;
  color: var(--text-muted);
}

.empty-state h3 {
  margin-bottom: 8px;
  font-size: 1.125rem;
}

.empty-state p {
  color: var(--text-muted);
  font-size: 14px;
  max-width: 360px;
  margin: 0 auto;
}

/* ==========================================================================
   Start Here
   ========================================================================== */
.start-here {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.user-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

@media (max-width: 980px) {
  .user-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 520px) {
  .user-grid { grid-template-columns: 1fr; }
}

.user-card {
  display: flex;
  flex-direction: column;
  padding: 26px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}

.user-card:hover {
  border-color: rgba(59, 130, 246, 0.35);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}

.user-card-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 12px;
  margin-bottom: 18px;
  color: var(--blue);
}

.user-card:nth-child(2) .user-card-icon { background: rgba(34, 211, 238, 0.1); border-color: rgba(34, 211, 238, 0.2); color: var(--cyan); }
.user-card:nth-child(3) .user-card-icon { background: rgba(245, 158, 11, 0.1); border-color: rgba(245, 158, 11, 0.2); color: var(--orange); }
.user-card:nth-child(4) .user-card-icon { background: rgba(16, 185, 129, 0.1); border-color: rgba(16, 185, 129, 0.2); color: var(--green); }

.user-card h3 {
  font-size: 1.0625rem;
  margin-bottom: 8px;
}

.user-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 18px;
  flex: 1;
}

.user-card .btn-link {
  font-size: 13px;
}

/* ==========================================================================
   Tool Callout
   ========================================================================== */
.tool-callout-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 900px) {
  .tool-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 520px) {
  .tool-grid { grid-template-columns: 1fr; }
}

.tool-card {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
  text-align: left;
}

.tool-card:hover {
  border-color: rgba(59, 130, 246, 0.35);
  background: var(--card-hover);
  transform: translateY(-2px);
}

.tool-card-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.16), rgba(34, 211, 238, 0.08));
  border: 1px solid rgba(59, 130, 246, 0.22);
  border-radius: 12px;
  color: var(--blue);
  flex-shrink: 0;
}

.tool-card-content {
  flex: 1;
  min-width: 0;
}

.tool-card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.tool-card-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}

.tool-card-arrow {
  color: var(--text-muted);
  transition: var(--transition);
  flex-shrink: 0;
}

.tool-card:hover .tool-card-arrow {
  color: var(--blue);
  transform: translateX(3px);
}

/* ==========================================================================
   Newsletter / CTA Band
   ========================================================================== */
.cta-band {
  margin: 32px 0 0;
}

.cta-band-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 40px 44px;
  background:
    linear-gradient(135deg, rgba(59, 130, 246, 0.14), rgba(34, 211, 238, 0.06)),
    var(--card);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}

.cta-band-inner::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -10%;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.18), transparent 70%);
  pointer-events: none;
}

.cta-band-content {
  position: relative;
  max-width: 540px;
}

.cta-band h3 {
  font-size: 1.5rem;
  margin-bottom: 6px;
}

.cta-band p {
  font-size: 14.5px;
  margin: 0;
}

.cta-band-form {
  position: relative;
  display: flex;
  gap: 10px;
  min-width: 320px;
}

.cta-band-form input {
  flex: 1;
  height: 48px;
  padding: 0 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}

.cta-band-form input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.16);
}

@media (max-width: 760px) {
  .cta-band-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 32px 28px;
  }
  .cta-band-form {
    width: 100%;
    min-width: 0;
  }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  padding: 64px 0 32px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  margin-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

@media (max-width: 760px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-brand .logo {
  margin-bottom: 12px;
}

.footer-tag {
  color: var(--text-muted);
  font-size: 14px;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: var(--transition);
}

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

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-muted);
}

/* ==========================================================================
   Article Page
   ========================================================================== */
.article-hero {
  padding: 56px 0 32px;
  position: relative;
  overflow: hidden;
}

.article-hero::before {
  content: '';
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 400px;
  background: radial-gradient(ellipse at center, rgba(59, 130, 246, 0.1), transparent 60%);
  pointer-events: none;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: var(--transition);
}

.breadcrumb a:hover {
  color: var(--blue);
}

.breadcrumb-sep {
  color: var(--text-muted);
  opacity: 0.5;
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.article-title {
  font-size: clamp(1.875rem, 4vw, 2.75rem);
  line-height: 1.15;
  margin-bottom: 18px;
  max-width: 880px;
}

.article-summary {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 760px;
  margin-bottom: 32px;
}

.author-strip {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: white;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  flex-shrink: 0;
}

.author-info {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.author-detail {
  font-size: 12px;
  color: var(--text-muted);
}

.article-actions {
  margin-left: auto;
  display: flex;
  gap: 8px;
}

.icon-btn {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.icon-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
  background: var(--card-hover);
}

/* Article layout */
.article-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 56px;
  align-items: start;
  padding: 56px 0 80px;
}

@media (max-width: 980px) {
  .article-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

.toc {
  position: sticky;
  top: 96px;
}

@media (max-width: 980px) {
  .toc {
    position: static;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
  }
}

.toc-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-left: 1px solid var(--border);
}

.toc-list a {
  display: block;
  padding: 7px 14px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  font-size: 13.5px;
  color: var(--text-secondary);
  transition: var(--transition);
}

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

.toc-list a.active {
  color: var(--blue);
  border-left-color: var(--blue);
}

/* Article body */
.article-body {
  max-width: 760px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-secondary);
}

.article-body h2 {
  font-size: 1.625rem;
  margin: 48px 0 16px;
  scroll-margin-top: 90px;
  color: var(--text-primary);
}

.article-body h2:first-child {
  margin-top: 0;
}

.article-body h3 {
  font-size: 1.25rem;
  margin: 32px 0 12px;
  color: var(--text-primary);
}

.article-body p {
  margin-bottom: 18px;
  color: var(--text-secondary);
}

.article-body ul,
.article-body ol {
  margin: 0 0 22px 18px;
  color: var(--text-secondary);
}

.article-body li {
  margin-bottom: 8px;
  padding-left: 6px;
}

.article-body a:not(.btn) {
  color: var(--blue);
  text-decoration: underline;
  text-decoration-color: rgba(59, 130, 246, 0.4);
  text-underline-offset: 3px;
}

.article-body a:not(.btn):hover {
  color: var(--cyan);
  text-decoration-color: var(--cyan);
}

.article-body a.btn {
  text-decoration: none;
}

.article-body strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* Pull quote */
.pull-quote {
  margin: 32px 0;
  padding: 28px 32px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(34, 211, 238, 0.04));
  border-left: 3px solid var(--blue);
  border-radius: 12px;
  font-size: 1.25rem;
  line-height: 1.5;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.005em;
  position: relative;
}

.pull-quote::before {
  content: '"';
  position: absolute;
  top: 0;
  left: 14px;
  font-size: 56px;
  line-height: 1;
  color: rgba(59, 130, 246, 0.25);
  font-family: Georgia, serif;
}

.pull-quote-attr {
  display: block;
  margin-top: 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

/* Checklist block */
.checklist {
  margin: 32px 0;
  padding: 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.checklist-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.checklist-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.checklist-title svg {
  color: var(--green);
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}

.copy-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.copy-btn.copied {
  color: var(--green);
  border-color: rgba(16, 185, 129, 0.3);
  background: rgba(16, 185, 129, 0.08);
}

.checklist-list {
  list-style: none;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14.5px;
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition);
}

.checklist-item:hover {
  border-color: var(--border-strong);
}

.checklist-checkbox {
  width: 18px;
  height: 18px;
  display: grid;
  place-items: center;
  background: var(--bg-primary);
  border: 1.5px solid var(--text-muted);
  border-radius: 5px;
  flex-shrink: 0;
  margin-top: 2px;
  transition: var(--transition);
}

.checklist-item.checked .checklist-checkbox {
  background: var(--green);
  border-color: var(--green);
}

.checklist-item.checked .checklist-checkbox::after {
  content: '';
  width: 9px;
  height: 5px;
  border-left: 2px solid white;
  border-bottom: 2px solid white;
  transform: rotate(-45deg) translate(1px, -1px);
}

.checklist-item.checked .checklist-text {
  text-decoration: line-through;
  color: var(--text-muted);
}

/* Related tool inline card */
.related-tool-card {
  display: flex;
  align-items: center;
  gap: 20px;
  margin: 32px 0;
  padding: 24px 28px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(34, 211, 238, 0.04));
  border: 1px solid rgba(59, 130, 246, 0.22);
  border-radius: var(--radius);
}

.related-tool-card .tool-card-icon {
  width: 52px;
  height: 52px;
}

.related-tool-card-content {
  flex: 1;
}

.related-tool-card-eyebrow {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--cyan);
  margin-bottom: 4px;
}

.related-tool-card h4 {
  font-size: 17px;
  margin-bottom: 4px;
}

.related-tool-card p {
  font-size: 13.5px;
  color: var(--text-secondary);
  margin: 0;
}

@media (max-width: 600px) {
  .related-tool-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 22px;
  }
}

/* Related articles */
.related-articles {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 64px 0 80px;
}

/* Reading progress bar */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  z-index: 200;
  transition: width 0.05s linear;
}

/* ==========================================================================
   Utility / Animation
   ========================================================================== */
.fade-in {
  animation: fadeIn 0.5s ease both;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

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

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--card);
  border-radius: 10px;
  border: 2px solid var(--bg-primary);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--card-hover);
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 6px;
}