@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Noto+Sans+JP:wght@300;400;500;700;900&display=swap');

:root {
  /* ── Base (Light Theme) ── */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8FAFB;          /* Extremely light blue-gray */
  --bg-tertiary: #F1F5F9;           /* Section backgrounds */
  --bg-sidebar: #FAFBFC;
  --bg-footer: #051C2C;             /* Dark Navy footer */

  /* ── Brand Colors (McKinsey Navy + BCG Green) ── */
  --brand-navy: #051C2C;            /* McKinsey Deep Navy */
  --brand-blue: #0B5394;            /* Main Blue */
  --brand-green: #00875A;           /* BCG Green */
  --brand-green-light: #E3FCEF;     /* Light Green background for CTAs */
  --brand-green-hover: #006644;
  --accent-gradient: linear-gradient(135deg, #0B5394 0%, #00875A 100%);

  /* ── Text ── */
  --text-primary: #1A1A2E;          /* Near black with slight navy tint */
  --text-secondary: #4A5568;        /* Slate gray for body readability */
  --text-muted: #8A99AD;
  --text-on-dark: #FFFFFF;

  /* ── Accent ── */
  --accent-blue: #2563EB;           /* Text links & primary actions */
  --accent-blue-hover: #1D4ED8;
  --accent-orange: #F59E0B;         /* Warnings & highlights */

  /* ── Border & Shadow ── */
  --border-color: #E2E8F0;
  --border-hover: #CBD5E1;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.08);

  --font-sans: 'Inter', 'Noto Sans JP', sans-serif;
  --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── Global Resets ── */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.75;
  letter-spacing: 0.015em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 5px;
  border: 2px solid var(--bg-secondary);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--brand-blue);
}

a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: var(--transition-smooth);
}
a:hover {
  color: var(--accent-blue-hover);
  text-decoration: underline;
}

/* ── Header & Navigation ── */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: 1300px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo a {
  color: var(--brand-navy);
  font-weight: 900;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-decoration: none;
}

.logo span {
  font-weight: 500;
  color: var(--text-muted);
  font-size: 0.75rem;
  border-left: 1px solid var(--border-color);
  padding-left: 0.5rem;
}

.nav-container {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-tabs {
  display: flex;
  gap: 0.25rem;
  list-style: none;
}

.nav-tab a {
  display: block;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-decoration: none;
}

.nav-tab:hover a {
  color: var(--brand-navy);
  background-color: var(--bg-tertiary);
}

.nav-tab.active a {
  color: var(--text-on-dark);
  background: var(--brand-navy);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

/* Mobile Hamburger Menu */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 110;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--brand-navy);
  margin: 5px 0;
  transition: var(--transition-smooth);
}

/* Toggle Menu Active State */
.menu-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.menu-toggle.open span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* ── Main Layout ── */
.container {
  max-width: 1300px;
  margin: 2rem auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  min-height: calc(100vh - 200px);
}

.container.no-sidebar {
  grid-template-columns: 1fr;
}

/* ── Sidebar Menu ── */
.sidebar {
  background: var(--bg-sidebar);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  height: fit-content;
  position: sticky;
  top: 90px;
  box-shadow: var(--shadow-sm);
}

.sidebar h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--brand-navy);
  margin-bottom: 0.75rem;
  margin-top: 1.5rem;
  letter-spacing: 0.1em;
  font-weight: 700;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.25rem;
}

.sidebar h3:first-of-type {
  margin-top: 0;
}

.sidebar-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.sidebar-item a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0.75rem;
  border-left: 4px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
}

.sidebar-item:hover a {
  background-color: var(--bg-tertiary);
  color: var(--brand-navy);
}

.sidebar-item.active a {
  background-color: var(--brand-green-light);
  color: var(--brand-green);
  font-weight: 600;
  border-left: 4px solid var(--brand-green);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ── Main Content Area ── */
main {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-sm);
}

/* ── Content Typography ── */
h1 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  line-height: 1.3;
  color: var(--brand-navy);
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 3rem;
  margin-bottom: 1.25rem;
  color: var(--brand-navy);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 20px;
  background-color: var(--brand-green);
  border-radius: 2px;
}

h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--brand-blue);
}

p {
  margin-bottom: 1.25rem;
  color: var(--text-secondary);
  font-size: 1rem;
  text-align: justify;
}

ul, ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
  color: var(--text-secondary);
}

li {
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

strong {
  color: var(--brand-navy);
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.breadcrumbs a {
  color: var(--text-muted);
}
.breadcrumbs a:hover {
  color: var(--brand-blue);
}
.breadcrumbs span {
  font-weight: 400;
}

/* Date Info */
.page-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: -1rem;
  margin-bottom: 2rem;
  border-bottom: 1px dashed var(--border-color);
  padding-bottom: 0.75rem;
}

/* ── Table Wrapper (Responsive) ── */
.table-wrapper {
  overflow-x: auto;
  margin: 2rem 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.925rem;
  background-color: var(--bg-primary);
  text-align: left;
}

th, td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

th {
  background-color: var(--brand-navy);
  color: var(--text-on-dark);
  font-weight: 600;
}

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

tr:last-child td {
  border-bottom: none;
}

tr:nth-child(even) {
  background-color: var(--bg-secondary);
}

tr:hover td {
  background-color: rgba(11, 83, 148, 0.03);
}

/* ── Callout Box (Warning/Info boxes) ── */
.callout-box {
  background: var(--bg-secondary);
  border-left: 4px solid var(--brand-blue);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  box-shadow: var(--shadow-sm);
}

.callout-box h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--brand-navy);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.callout-box p {
  margin-bottom: 0;
  font-size: 0.925rem;
  color: var(--text-secondary);
}

.callout-green {
  background: var(--brand-green-light);
  border-left-color: var(--brand-green);
}
.callout-green h4 {
  color: var(--brand-green-hover);
}

.callout-orange {
  background: #FFFDF5;
  border-left-color: var(--accent-orange);
}
.callout-orange h4 {
  color: #B45309;
}

/* Blockquotes */
blockquote {
  border-left: 3px solid var(--brand-green);
  padding-left: 1.25rem;
  margin: 1.5rem 0;
  color: var(--text-secondary);
  font-style: italic;
}

/* Images & Figures */
.article-image {
  width: 100%;
  max-width: 750px;
  height: auto;
  margin: 2rem auto;
  display: block;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
}

.image-caption {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: -1.5rem;
  margin-bottom: 2rem;
}

/* ── Hero Section ── */
.hero-section {
  position: relative;
  background: var(--accent-gradient);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-lg);
  color: var(--text-on-dark);
}

.hero-img-container {
  width: 100%;
  max-height: 280px;
  overflow: hidden;
  position: relative;
}

.hero-img-container::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(5, 28, 44, 0.2) 0%, rgba(5, 28, 44, 0.8) 100%);
}

.hero-img-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-content {
  padding: 2.5rem;
  position: relative;
  margin-top: -80px;
  z-index: 2;
  background: linear-gradient(180deg, rgba(5, 28, 44, 0) 0%, rgba(5, 28, 44, 0.95) 80px);
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  color: var(--text-on-dark);
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.5;
}

.hero-buttons {
  margin-top: 1.5rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition-smooth);
  cursor: pointer;
  border: none;
}
.btn-primary {
  background-color: var(--brand-green);
  color: var(--text-on-dark);
}
.btn-primary:hover {
  background-color: var(--brand-green-hover);
  color: var(--text-on-dark);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 135, 90, 0.3);
}
.btn-secondary {
  background-color: rgba(255, 255, 255, 0.2);
  color: var(--text-on-dark);
  backdrop-filter: blur(5px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}
.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.3);
  color: var(--text-on-dark);
  text-decoration: none;
  transform: translateY(-2px);
}

/* ── Social Proof Numbers ── */
.social-proof {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 2.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
}
.social-proof-item .number {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--brand-blue);
  line-height: 1.2;
}
.social-proof-item .label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* ── Home Cards Layout ── */
.home-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
}

.home-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
}

.home-card:hover {
  transform: translateY(-3px);
  border-color: var(--brand-blue);
  box-shadow: var(--shadow-md);
}

.home-card h3 {
  margin-top: 0;
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
  color: var(--brand-navy);
}

.home-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.home-card .card-action {
  font-weight: 600;
  color: var(--accent-blue);
  font-size: 0.875rem;
}
.home-card .card-action:hover {
  color: var(--accent-blue-hover);
}

/* ── Explorer UI (Firm Cards) ── */
.firm-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.firm-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 200px;
  box-shadow: var(--shadow-sm);
}

.firm-card:hover {
  transform: translateY(-3px);
  border-color: var(--brand-green);
  box-shadow: var(--shadow-md);
}

.firm-card h3 {
  margin-top: 0;
  font-size: 1.1rem;
  color: var(--brand-navy);
  margin-bottom: 0.5rem;
}

.firm-tag {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.tag-strategy {
  background-color: var(--brand-green-light);
  color: var(--brand-green);
  border: 1px solid rgba(0, 135, 90, 0.2);
}

.tag-general {
  background-color: rgba(11, 83, 148, 0.08);
  color: var(--brand-blue);
  border: 1px solid rgba(11, 83, 148, 0.15);
}

.firm-desc {
  font-size: 0.825rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.firm-action {
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--brand-green);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.firm-action:hover {
  color: var(--brand-green-hover);
  text-decoration: none;
}

/* ── Persona-based Navigation ── */
.persona-nav {
  margin: 3rem 0;
}
.persona-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}
.persona-card {
  border: 1px solid var(--border-color);
  background-color: var(--bg-sidebar);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  transition: var(--transition-smooth);
}
.persona-card:hover {
  border-color: var(--brand-blue);
  background-color: var(--bg-primary);
  box-shadow: var(--shadow-sm);
}
.persona-card h4 {
  font-size: 1.1rem;
  color: var(--brand-navy);
  margin-bottom: 0.5rem;
}
.persona-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  text-align: center;
}

/* ── CTA Sections (Monetization) ── */
.cta-section {
  background-color: var(--brand-green-light);
  border: 1px solid rgba(0, 135, 90, 0.15);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin: 3rem 0;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.cta-section h3 {
  margin-top: 0;
  color: var(--brand-green-hover);
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}

.cta-section p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 600px;
  margin: 0 auto 1.5rem auto;
  text-align: center;
}

.cta-btn {
  display: inline-block;
  background-color: var(--brand-green);
  color: var(--text-on-dark);
  font-weight: 700;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  transition: var(--transition-smooth);
  box-shadow: 0 4px 12px rgba(0, 135, 90, 0.2);
}

.cta-btn:hover {
  background-color: var(--brand-green-hover);
  color: var(--text-on-dark);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 135, 90, 0.3);
}

.cta-disclaimer {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
}

/* Sticky Sidebar CTA */
.sidebar-cta {
  background-color: var(--brand-green-light);
  border: 1px solid rgba(0, 135, 90, 0.15);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-top: 1.5rem;
  text-align: center;
}
.sidebar-cta h4 {
  font-size: 0.9rem;
  color: var(--brand-green-hover);
  margin-bottom: 0.5rem;
  font-weight: 700;
}
.sidebar-cta p {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  text-align: center;
}
.sidebar-cta .cta-btn-sm {
  display: block;
  background-color: var(--brand-green);
  color: var(--text-on-dark);
  font-weight: 700;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  transition: var(--transition-smooth);
}
.sidebar-cta .cta-btn-sm:hover {
  background-color: var(--brand-green-hover);
  color: var(--text-on-dark);
  text-decoration: none;
}

/* ── Author Profile Box ── */
.author-profile {
  display: flex;
  gap: 1.25rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin: 3.5rem 0 1.5rem 0;
  align-items: center;
}
.author-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--accent-gradient);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-on-dark);
  font-weight: 800;
  font-size: 1.25rem;
}
.author-info h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--brand-navy);
  margin-bottom: 0.25rem;
}
.author-info p {
  font-size: 0.825rem;
  color: var(--text-secondary);
  margin-bottom: 0;
  text-align: left;
}

/* ── Interactive Quiz & Tool UI ── */
.quiz-container {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  background-color: var(--bg-secondary);
  margin: 2rem 0;
}
.quiz-question {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--brand-navy);
  margin-bottom: 1.5rem;
}
.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.quiz-option {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  font-weight: 500;
}
.quiz-option:hover {
  border-color: var(--brand-blue);
  background-color: rgba(11, 83, 148, 0.02);
}
.quiz-progress {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  text-align: right;
}
.quiz-progress-bar {
  height: 4px;
  background-color: var(--border-color);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 1.5rem;
}
.quiz-progress-fill {
  height: 100%;
  background-color: var(--brand-blue);
  width: 0%;
  transition: width 0.3s ease;
}
.quiz-result {
  text-align: center;
}
.quiz-result h4 {
  font-size: 1.5rem;
  color: var(--brand-navy);
  margin-bottom: 1rem;
}

/* ── Footer ── */
footer {
  margin-top: 5rem;
  padding: 3.5rem 2rem 2.5rem 2rem;
  background-color: var(--bg-footer);
  color: rgba(255, 255, 255, 0.7);
  border-top: 1px solid var(--border-color);
}
.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2.5rem;
}
.footer-col h4 {
  color: var(--text-on-dark);
  font-size: 0.95rem;
  margin-bottom: 1rem;
  font-weight: 700;
}
.footer-col ul {
  list-style: none;
  padding-left: 0;
  margin-bottom: 0;
}
.footer-col li {
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
}
.footer-col a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
}
.footer-col a:hover {
  color: var(--text-on-dark);
  text-decoration: underline;
}
footer .footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
}
footer p {
  text-align: center;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
}

/* ── Responsive Adaptations ── */
@media (max-width: 1024px) {
  .container {
    grid-template-columns: 1fr;
    margin: 1rem auto;
  }
  .sidebar {
    position: static;
    margin-bottom: 1.5rem;
    width: 100%;
  }
}

@media (max-width: 768px) {
  .header-inner {
    padding: 0.75rem 1.5rem;
  }
  .logo span {
    display: none;
  }
  .menu-toggle {
    display: block;
  }
  .nav-tabs {
    position: fixed;
    top: 57px;
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    flex-direction: column;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-150%);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    z-index: 99;
  }
  .nav-tabs.open {
    transform: translateY(0);
    opacity: 1;
  }
  .nav-tab a {
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
  }
  main {
    padding: 1.5rem;
    border-radius: var(--radius-md);
  }
  h1 {
    font-size: 1.75rem;
  }
  h2 {
    font-size: 1.3rem;
  }
  .hero-title {
    font-size: 1.75rem;
  }
  .hero-content {
    padding: 1.5rem;
    margin-top: -60px;
  }
  .social-proof {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    padding: 1rem;
  }
  .persona-grid {
    grid-template-columns: 1fr;
  }
  .footer-container {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
  }
  .btn {
    width: 100%;
  }
  .social-proof {
    grid-template-columns: 1fr;
  }
}

/* ── Timeline (Roadmaps) ── */
.timeline {
  position: relative;
  margin: 2rem 0;
  padding-left: 2rem;
  border-left: 2px solid var(--border-color);
}
.timeline-item {
  position: relative;
  margin-bottom: 2rem;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -2.45rem;
  top: 0.25rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--brand-blue);
  border: 3px solid var(--bg-secondary);
}
.timeline-item h5 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--brand-navy);
  margin-bottom: 0.5rem;
}

/* ── Interactive Salary Tool ── */
.tool-flex {
  display: flex;
  gap: 2rem;
  margin: 2rem 0;
}
@media (max-width: 768px) {
  .tool-flex {
    flex-direction: column;
  }
}
.tool-inputs-card {
  flex: 1;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.tool-results-card {
  flex: 1.2;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}
.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.input-group label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--brand-navy);
}
.input-group select, .input-group input[type="range"] {
  width: 100%;
}
.input-group select {
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  font-size: 0.95rem;
  min-height: 44px;
}
.range-val {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--brand-blue);
  align-self: flex-end;
}
.stat-card {
  background: var(--brand-navy);
  color: white;
  padding: 1.5rem;
  border-radius: var(--radius-md);
  text-align: center;
  margin-bottom: 1.5rem;
}
.stat-val {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--brand-green-light);
  margin-top: 0.25rem;
}
.chart-bars {
  display: flex;
  justify-content: space-around;
  align-items: flex-end;
  height: 200px;
  padding: 1rem 0;
  border-bottom: 2px solid var(--border-color);
  margin-top: 1.5rem;
}
.chart-bar-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 15%;
  height: 100%;
  justify-content: flex-end;
  gap: 0.5rem;
}
.chart-bar-fill {
  width: 100%;
  background: var(--accent-gradient);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  transition: height 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}
.chart-bar-val {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}
.chart-bar-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
}