:root {
  --primary: #0f172a;
  --primary-light: #1e293b;
  --accent: #0ea5e9;
  --accent-hover: #0284c7;
  --text-main: #334155;
  --text-light: #64748b;
  --bg-body: #f8fafc;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.6;
  width: 100%;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--primary);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; margin-top: 2rem; }
h3 { font-size: 1.5rem; margin-top: 1.5rem; }

p { margin-bottom: 1rem; }

/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Nav */
header {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1rem 0;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-weight: 500;
  color: var(--text-main);
}

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

/* Hero Section */
.hero {
  padding: 4rem 0;
  text-align: center;
  background: linear-gradient(to bottom, #e0f2fe, #f8fafc);
  margin-bottom: 3rem;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-light);
  max-width: 700px;
  margin: 0 auto 2rem;
}

/* Grid Layouts */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: var(--shadow-sm);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-image {
  width: 100%;
  height: 200px;
  background-color: #e2e8f0;
  object-fit: cover;
}

.card-content {
  padding: 1.5rem;
}

.card-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: #e0f2fe;
  color: var(--accent);
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

/* Disclosure */
.disclosure-banner {
  background: #f1f5f9;
  border-bottom: 1px solid var(--border);
  padding: 0.5rem 0;
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-light);
}

.article-disclosure {
  font-style: italic;
  color: var(--text-light);
  background: #f8fafc;
  padding: 1rem;
  border-left: 4px solid var(--accent);
  margin-bottom: 2rem;
  font-size: 0.9rem;
}

/* Article Styles */
.article-header {
  text-align: center;
  margin-bottom: 3rem;
}

.article-meta {
  color: var(--text-light);
  margin-bottom: 2rem;
}

.article-content {
  max-width: 800px;
  margin: 0 auto;
  font-size: 1.1rem;
}

.product-section {
  background: white;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  margin: 3rem 0;
  box-shadow: var(--shadow-sm);
}

.product-btn {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 1rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  margin-top: 1.5rem;
  transition: background 0.2s;
}

.product-btn:hover {
  background: var(--accent-hover);
}

/* Footer */
footer {
  background: var(--primary);
  color: #94a3b8;
  padding: 4rem 0 1rem;
  margin-top: 4rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand h2 {
  color: white;
  margin-top: 0;
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a:hover {
  color: white;
}

.social-icons {
  display: flex;
  gap: 1rem;
}

.social-icon {
  width: 32px;
  height: 32px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.copyright {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}

/* Mobile */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  .hero { padding: 2rem 0; }
  .nav-links { display: none; } /* Simplified for now, in real app add hamburger */
}