:root {
  /* Sharealedger Palette */
  --sl-primary: #535285;       /* Deep slate purple */
  --sl-primary-dark: #3c3b63;  /* Darker slate purple */
  --sl-blue: #3F91BD;          /* Ocean blue */
  --sl-blue-light: #73ACC7;    /* Soft blue */
  --sl-amber: #F5A551;         /* Warm amber */
  --sl-gold: #FADD6B;          /* Gold accent */
  --sl-cream: #F2EFE9;         /* Cream background */
  --sl-sand: #E5CE9E;          /* Warm sand */
  --sl-rust: #B24F4E;          /* Rust red */

  /* LedgerLearning Warm Palette */
  --ll-brown: #6C3F26;         /* Deep rich brown */
  --ll-tan: #A67752;           /* Warm leather tan */
  --ll-taupe: #DEE5E8;         /* Cool mist taupe */
  --ll-earth: #A38A7B;         /* Earth tone */
  --ll-warm-bg: #FAF7F2;       /* Warm light bg */

  /* Neutral UI Tokens */
  --bg-main: #FFFFFF;
  --bg-alt: #F8F9FA;
  --text-main: #24292F;
  --text-muted: #57606A;
  --text-inverse: #FFFFFF;
  --border-light: #E1E4E8;
  --border-subtle: #ECEEF1;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-serif: "Georgia", "Cambria", serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  color: var(--text-main);
  background-color: var(--bg-main);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--sl-blue);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--sl-primary);
  text-decoration: underline;
}

/* Container */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header & Nav */
.site-header {
  background: #FFFFFF;
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--sl-primary);
  font-weight: 700;
  font-size: 1.25rem;
}

.brand img {
  height: 42px;
  width: auto;
  border-radius: var(--radius-sm);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.2rem;
  line-height: 1.1;
  color: var(--sl-primary);
  letter-spacing: -0.02em;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 20px;
  align-items: center;
  list-style: none;
}

.nav-links a {
  color: var(--text-main);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--sl-primary);
  background: var(--sl-cream);
  text-decoration: none;
}

.nav-btn-highlight {
  background: var(--sl-primary) !important;
  color: #FFFFFF !important;
  font-weight: 600 !important;
}

.nav-btn-highlight:hover {
  background: var(--sl-primary-dark) !important;
}

/* Banner / Hero Section */
.hero-section {
  background: linear-gradient(135deg, var(--sl-primary) 0%, #302f52 60%, var(--sl-blue) 100%);
  color: #FFFFFF;
  padding: 64px 0 72px;
  position: relative;
  overflow: hidden;
}

.hero-section::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 35%;
  background: radial-gradient(circle, rgba(245, 165, 81, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.hero-title {
  font-size: 2.75rem;
  line-height: 1.15;
  font-weight: 800;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}

.hero-title span {
  color: var(--sl-gold);
}

.hero-lead {
  font-size: 1.2rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--sl-amber);
  color: #1a1a1a;
}

.btn-primary:hover {
  background: #f7b66f;
  text-decoration: none;
  color: #000;
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.25);
  color: #FFFFFF;
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-brown {
  background: var(--ll-brown);
  color: #FFFFFF;
}

.btn-brown:hover {
  background: #54311e;
  color: #FFFFFF;
  text-decoration: none;
}

.hero-card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: 30px;
  color: #FFFFFF;
}

.hero-card h3 {
  font-size: 1.25rem;
  color: var(--sl-gold);
  margin-bottom: 12px;
}

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

.hero-card li {
  display: flex;
  gap: 10px;
  font-size: 0.95rem;
  line-height: 1.45;
}

.hero-card li::before {
  content: "✔";
  color: var(--sl-amber);
  font-weight: bold;
}

/* LedgerLearning Featured Spotlight */
.ll-spotlight {
  background: linear-gradient(180deg, var(--ll-warm-bg) 0%, #FFFFFF 100%);
  border-top: 4px solid var(--ll-tan);
  border-bottom: 1px solid var(--border-light);
  padding: 60px 0;
}

.ll-header-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #EDE6DE;
  color: var(--ll-brown);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.ll-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  margin-top: 24px;
}

.ll-content h2 {
  font-size: 2.2rem;
  color: var(--ll-brown);
  line-height: 1.25;
  margin-bottom: 16px;
}

.ll-content p {
  color: #4A4A4A;
  font-size: 1.05rem;
  margin-bottom: 20px;
}

.ll-feature-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.ll-feature-item {
  background: #FFFFFF;
  border: 1px solid #E2D9D0;
  border-radius: var(--radius-sm);
  padding: 14px;
  border-left: 3px solid var(--ll-tan);
}

.ll-feature-item h4 {
  font-size: 0.95rem;
  color: var(--ll-brown);
  margin-bottom: 4px;
}

.ll-feature-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.4;
}

.ll-media-card {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.video-container {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 ratio */
  height: 0;
  overflow: hidden;
  background: #000;
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.ll-media-info {
  padding: 20px;
}

.ll-media-info h3 {
  font-size: 1.15rem;
  color: var(--ll-brown);
  margin-bottom: 6px;
}

.ll-media-info p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

/* Sections */
.section {
  padding: 70px 0;
}

.section-alt {
  background-color: var(--bg-alt);
}

.section-cream {
  background-color: var(--sl-cream);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 48px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--sl-blue);
  margin-bottom: 10px;
}

.section-title {
  font-size: 2.2rem;
  color: var(--sl-primary);
  line-height: 1.25;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Card Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.card {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--sl-cream);
  color: var(--sl-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.card-title {
  font-size: 1.3rem;
  color: var(--sl-primary);
  margin-bottom: 12px;
  font-weight: 700;
}

.card-body {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

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

.card-link:hover {
  color: var(--sl-primary);
}

/* Report / Exchange Cards */
.report-card {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.report-card-header {
  padding: 24px 24px 16px;
  border-bottom: 1px solid var(--border-subtle);
}

.report-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--sl-cream);
  color: var(--sl-primary);
  margin-bottom: 10px;
}

.report-title {
  font-size: 1.25rem;
  color: var(--sl-primary);
  font-weight: 700;
  line-height: 1.35;
}

.report-card-body {
  padding: 20px 24px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex-grow: 1;
}

.report-card-footer {
  padding: 16px 24px;
  background: var(--bg-alt);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Content Page Layout */
.page-header {
  background: linear-gradient(135deg, var(--sl-primary) 0%, #302f52 100%);
  color: #FFFFFF;
  padding: 56px 0;
  margin-bottom: 40px;
}

.page-header.ll-theme {
  background: linear-gradient(135deg, var(--ll-brown) 0%, #442514 100%);
}

.page-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.page-subtitle {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 700px;
}

.content-wrapper {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 48px;
  margin-bottom: 60px;
}

.content-single {
  max-width: 860px;
  margin: 0 auto 60px;
}

/* Sidebar Nav */
.sidebar-sticky {
  position: sticky;
  top: 96px;
}

.sidebar-menu {
  list-style: none;
  background: var(--bg-alt);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 12px;
}

.sidebar-menu li a {
  display: block;
  padding: 10px 14px;
  color: var(--text-main);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
}

.sidebar-menu li a:hover,
.sidebar-menu li a.active {
  background: var(--sl-cream);
  color: var(--sl-primary);
  text-decoration: none;
}

/* Document & Text Styling */
.prose {
  font-size: 1.05rem;
  line-height: 1.75;
  color: #2F363D;
}

.prose h2 {
  font-size: 1.75rem;
  color: var(--sl-primary);
  margin-top: 40px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
}

.prose h3 {
  font-size: 1.35rem;
  color: var(--sl-primary-dark);
  margin-top: 28px;
  margin-bottom: 12px;
}

.prose p {
  margin-bottom: 20px;
}

.prose ul, .prose ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

.prose li {
  margin-bottom: 8px;
}

.prose blockquote {
  border-left: 4px solid var(--sl-amber);
  background: var(--sl-cream);
  padding: 18px 24px;
  font-style: italic;
  font-size: 1.1rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 28px 0;
}

.prose blockquote cite {
  display: block;
  font-size: 0.9rem;
  font-style: normal;
  font-weight: 600;
  color: var(--text-muted);
  margin-top: 8px;
}

/* Callout Box */
.callout {
  background: #F4F7FB;
  border: 1px solid #D0DBE8;
  border-left: 4px solid var(--sl-blue);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 24px;
  margin: 28px 0;
}

.callout h4 {
  color: var(--sl-primary);
  font-size: 1.1rem;
  margin-bottom: 8px;
}

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

/* Footer */
.site-footer {
  background: #1F2328;
  color: #8B949E;
  padding: 60px 0 30px;
  font-size: 0.9rem;
  border-top: 1px solid #30363D;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand h4 {
  color: #FFFFFF;
  font-size: 1.15rem;
  margin-bottom: 12px;
}

.footer-brand p {
  line-height: 1.6;
  margin-bottom: 16px;
  color: #8B949E;
}

.footer-col h5 {
  color: #FFFFFF;
  font-size: 0.95rem;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.footer-col a {
  color: #8B949E;
  text-decoration: none;
}

.footer-col a:hover {
  color: #FFFFFF;
  text-decoration: underline;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid #30363D;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* Mobile Responsiveness */
@media (max-width: 900px) {
  .hero-grid,
  .ll-grid,
  .content-wrapper {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .nav-links {
    display: none; /* simple fallback for now */
  }
}

@media (max-width: 600px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .ll-feature-list {
    grid-template-columns: 1fr;
  }
}