:root {
  --tcn-color-teal-900: #0d4a3b;
  --tcn-color-teal-700: #1a7f64;
  --tcn-color-amber-500: #f5a623;
  --tcn-color-emerald-600: #2d9d5a;
  --tcn-color-ink-900: #1f2937;
  --tcn-color-ink-600: #4b5563;
  --tcn-color-surface-100: #ffffff;
  --tcn-color-surface-200: #f0faf7;
  --tcn-color-border-300: #d1e8e0;

  --tcn-color-primary: var(--tcn-color-teal-700);
  --tcn-color-accent: var(--tcn-color-amber-500);
  --tcn-color-success: var(--tcn-color-emerald-600);
  --tcn-color-danger: #d94545;
  --tcn-color-text: var(--tcn-color-ink-900);
  --tcn-color-muted: var(--tcn-color-ink-600);
  --tcn-color-surface: var(--tcn-color-surface-100);
  --tcn-color-surface-alt: var(--tcn-color-surface-200);
  --tcn-color-border: var(--tcn-color-border-300);

  --tcn-font-heading: "Poppins", sans-serif;
  --tcn-font-body: "Inter", system-ui, sans-serif;

  --tcn-space-1: 0.5rem;
  --tcn-space-2: 0.75rem;
  --tcn-space-3: 1rem;
  --tcn-space-4: 1.5rem;
  --tcn-space-5: 2rem;
  --tcn-space-6: 3rem;

  --tcn-radius-sm: 8px;
  --tcn-radius-md: 12px;
  --tcn-radius-lg: 16px;
  --tcn-radius-pill: 999px;

  --tcn-shadow-raised: 0 10px 25px rgba(26, 127, 100, 0.12);
  --tcn-shadow-soft: 0 6px 16px rgba(26, 127, 100, 0.08);
}

* { box-sizing: border-box; }
body { margin: 0; font-family: var(--tcn-font-body); font-size: 1rem; color: var(--tcn-color-text); background: var(--tcn-color-surface-alt); line-height: 1.6; }
img { max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--tcn-color-accent); outline-offset: 2px; }

.tcn-container { width: min(1120px, 92vw); margin: 0 auto; }
.tcn-section { padding: var(--tcn-space-6) 0; }
.tcn-section--compact { padding: var(--tcn-space-4) 0; }

.tcn-heading-1 { font-family: var(--tcn-font-heading); font-size: clamp(2rem, 2.8vw, 2.8rem); font-weight: 700; margin: 0 0 var(--tcn-space-3); }
.tcn-heading-2 { font-family: var(--tcn-font-heading); font-size: clamp(1.5rem, 2.2vw, 2rem); font-weight: 700; margin: 0 0 var(--tcn-space-2); }
.tcn-heading-3 { font-family: var(--tcn-font-heading); font-size: 1.25rem; font-weight: 600; margin: 0 0 var(--tcn-space-2); }
.tcn-text-muted { color: var(--tcn-color-muted); }

.tcn-hero { background: linear-gradient(135deg, #ffffff 0%, #e8f8f3 50%, #fff8eb 100%); border-bottom: 1px solid var(--tcn-color-border); }
.tcn-hero__grid { display: grid; gap: var(--tcn-space-5); grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); align-items: center; }

.tcn-card { background: var(--tcn-color-surface); border: 1px solid var(--tcn-color-border); border-radius: var(--tcn-radius-lg); box-shadow: var(--tcn-shadow-raised); padding: var(--tcn-space-4); }
.tcn-card--soft { background: var(--tcn-color-surface-alt); box-shadow: var(--tcn-shadow-soft); }

.tcn-pill { display: inline-flex; align-items: center; gap: var(--tcn-space-1); padding: 0.35rem 0.85rem; border-radius: var(--tcn-radius-pill); background: var(--tcn-color-surface); border: 1px solid var(--tcn-color-border); font-size: 0.875rem; font-weight: 500; }

.tcn-grid-2 { display: grid; gap: var(--tcn-space-4); grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

.tcn-btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; border-radius: var(--tcn-radius-pill); padding: 0.85rem 1.6rem; border: 1px solid transparent; font-weight: 500; background: var(--tcn-color-primary); color: #ffffff; transition: transform 0.2s, box-shadow 0.2s; cursor: pointer; min-height: 44px; }
.tcn-btn--accent { background: var(--tcn-color-accent); color: #1f2937; }
.tcn-btn--ghost { background: transparent; color: var(--tcn-color-primary); border-color: var(--tcn-color-primary); }
.tcn-btn:hover { transform: translateY(-1px); box-shadow: var(--tcn-shadow-soft); }

.tcn-nav { background: var(--tcn-color-surface); border-bottom: 1px solid var(--tcn-color-border); position: sticky; top: 0; z-index: 10; }
.tcn-nav__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--tcn-space-3); padding: var(--tcn-space-3) 0; }
.tcn-brand { font-family: var(--tcn-font-heading); font-size: 1.2rem; font-weight: 700; color: var(--tcn-color-primary); }
.tcn-menu { display: flex; align-items: center; gap: var(--tcn-space-3); flex-wrap: wrap; }

.tcn-breadcrumbs { font-size: 0.875rem; color: var(--tcn-color-muted); }
.tcn-breadcrumbs a { color: var(--tcn-color-primary); }

.tcn-table { width: 100%; border-collapse: collapse; border-radius: var(--tcn-radius-md); overflow: hidden; }
.tcn-table th, .tcn-table td { padding: 0.85rem 1rem; border-bottom: 1px solid var(--tcn-color-border); text-align: left; }
.tcn-table thead { background: var(--tcn-color-surface-alt); }
.tcn-table tr:nth-child(even) { background: #f7fcfa; }

.tcn-alert { padding: var(--tcn-space-3); border-radius: var(--tcn-radius-md); border: 1px solid var(--tcn-color-border); background: var(--tcn-color-surface); }
.tcn-alert--warning { border-color: rgba(245, 166, 35, 0.3); background: #fffbeb; }

.tcn-accordion { border: 1px solid var(--tcn-color-border); border-radius: var(--tcn-radius-md); overflow: hidden; }
.tcn-accordion__item + .tcn-accordion__item { border-top: 1px solid var(--tcn-color-border); }
.tcn-accordion__trigger { width: 100%; text-align: left; background: var(--tcn-color-surface); border: none; padding: var(--tcn-space-3); font-weight: 500; cursor: pointer; }
.tcn-accordion__panel { padding: 0 var(--tcn-space-3) var(--tcn-space-3); display: none; }
.tcn-accordion__item.tcn-is-open .tcn-accordion__panel { display: block; }

.tcn-list { padding-left: 1.2rem; }

.tcn-footer { background: var(--tcn-color-teal-900); color: #ffffff; padding: var(--tcn-space-5) 0; }
.tcn-footer a { color: #ffffff; }

.tcn-sticky-cta { position: fixed; bottom: 1rem; left: 50%; transform: translateX(-50%); z-index: 20; display: none; }

@media (max-width: 767px) {
  .tcn-sticky-cta { display: block; }
  .tcn-menu { flex-direction: column; align-items: flex-start; }
}