/* CSS Prefix: cec- */

:root {
  --cec-primary: #2563eb;
  --cec-primary-dark: #1d4ed8;
  --cec-secondary: #059669;
  --cec-accent: #7c3aed;
  --cec-text: #1e293b;
  --cec-text-light: #64748b;
  --cec-bg: #ffffff;
  --cec-bg-alt: #f8fafc;
  --cec-border: #e2e8f0;
  --cec-warning: #d97706;
  --cec-error: #dc2626;
}

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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--cec-text);
  background: var(--cec-bg);
  line-height: 1.7;
  font-size: 16px;
}

.cec-header {
  background: var(--cec-bg);
  border-bottom: 1px solid var(--cec-border);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.cec-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cec-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--cec-text);
}

.cec-logo img {
  height: 40px;
  width: auto;
}

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

.cec-nav a {
  color: var(--cec-text-light);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.cec-nav a:hover {
  color: var(--cec-primary);
}

.cec-breadcrumb {
  background: var(--cec-bg-alt);
  padding: 0.75rem 2rem;
  font-size: 0.875rem;
}

.cec-breadcrumb-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.cec-breadcrumb a {
  color: var(--cec-primary);
  text-decoration: none;
}

.cec-breadcrumb span {
  color: var(--cec-text-light);
  margin: 0 0.5rem;
}

.cec-main {
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

.cec-article-header {
  margin-bottom: 2.5rem;
}

.cec-article-header h1 {
  font-size: 2.25rem;
  line-height: 1.3;
  color: var(--cec-text);
  margin-bottom: 1rem;
}

.cec-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  color: var(--cec-text-light);
  font-size: 0.9rem;
  flex-wrap: wrap;
}

.cec-author {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.cec-author-photo {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
}

.cec-content h2 {
  font-size: 1.5rem;
  color: var(--cec-text);
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--cec-primary);
}

.cec-content h3 {
  font-size: 1.25rem;
  color: var(--cec-text);
  margin: 2rem 0 0.75rem;
}

.cec-content p {
  margin-bottom: 1.25rem;
  color: var(--cec-text);
}

.cec-content ul,
.cec-content ol {
  margin: 1rem 0 1.5rem 1.5rem;
}

.cec-content li {
  margin-bottom: 0.5rem;
}

.cec-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 2rem auto;
  border-radius: 8px;
}

.cec-content a {
  color: var(--cec-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.cec-content a:hover {
  color: var(--cec-primary-dark);
}

.cec-callout {
  background: var(--cec-bg-alt);
  border-left: 4px solid var(--cec-primary);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 0 8px 8px 0;
}

.cec-callout-title {
  font-weight: 600;
  color: var(--cec-primary);
  margin-bottom: 0.5rem;
}

.cec-callout-warning {
  border-left-color: var(--cec-warning);
  background: #fffbeb;
}

.cec-callout-warning .cec-callout-title {
  color: var(--cec-warning);
}

.cec-callout-success {
  border-left-color: var(--cec-secondary);
  background: #ecfdf5;
}

.cec-callout-success .cec-callout-title {
  color: var(--cec-secondary);
}

.cec-table-wrapper {
  overflow-x: auto;
  margin: 1.5rem 0;
}

.cec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.cec-table th,
.cec-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--cec-border);
}

.cec-table th {
  background: var(--cec-bg-alt);
  font-weight: 600;
  color: var(--cec-text);
}

.cec-table tr:hover {
  background: var(--cec-bg-alt);
}

.cec-cost-box {
  background: linear-gradient(135deg, #eff6ff 0%, #f0fdf4 100%);
  border: 1px solid var(--cec-border);
  border-radius: 12px;
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.cec-cost-box h4 {
  color: var(--cec-primary);
  margin-bottom: 1rem;
}

.cec-internal-links {
  background: var(--cec-bg-alt);
  border-radius: 12px;
  padding: 1.5rem;
  margin: 2rem 0;
}

.cec-internal-links h4 {
  font-size: 1rem;
  color: var(--cec-text);
  margin-bottom: 1rem;
}

.cec-internal-links ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.cec-internal-links a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--cec-primary);
  text-decoration: none;
  font-size: 0.95rem;
}

.cec-internal-links a:hover {
  text-decoration: underline;
}

.cec-internal-links a::before {
  content: "→";
  color: var(--cec-secondary);
}

.cec-footer {
  background: var(--cec-text);
  color: #fff;
  padding: 3rem 2rem;
  margin-top: 4rem;
}

.cec-footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
}

.cec-footer h4 {
  font-size: 1rem;
  margin-bottom: 1rem;
  color: #fff;
}

.cec-footer p {
  color: #94a3b8;
  font-size: 0.9rem;
  line-height: 1.6;
}

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

.cec-footer li {
  margin-bottom: 0.5rem;
}

.cec-footer a {
  color: #94a3b8;
  text-decoration: none;
  font-size: 0.9rem;
}

.cec-footer a:hover {
  color: #fff;
}

.cec-footer-bottom {
  max-width: 1200px;
  margin: 2rem auto 0;
  padding-top: 2rem;
  border-top: 1px solid #334155;
  text-align: center;
  color: #64748b;
  font-size: 0.85rem;
}

@media (max-width: 768px) {
  .cec-header-inner {
    flex-direction: column;
    gap: 1rem;
  }

  .cec-nav {
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
  }

  .cec-article-header h1 {
    font-size: 1.75rem;
  }

  .cec-footer-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .cec-main {
    padding: 2rem 1rem;
  }
}