:root {
  --ink: #17201b;
  --muted: #5b6860;
  --paper: #fffdf8;
  --panel: #f2f6ef;
  --accent: #18634b;
  --accent-strong: #0e4433;
  --warm: #f2b84b;
  --line: #dbe3dc;
  --shadow: 0 14px 35px rgba(22, 46, 34, 0.12);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
}
* { box-sizing: border-box; }
body { margin: 0; line-height: 1.6; background: linear-gradient(180deg, #f8fbf5 0, var(--paper) 38rem); }
a { color: var(--accent-strong); text-underline-offset: 0.18em; }
a:hover { color: var(--accent); }
button, input, select { font: inherit; }
.skip-link { position: fixed; z-index: 100; left: 1rem; top: -8rem; padding: .75rem 1rem; background: #fff; border: 2px solid var(--accent); }
.skip-link:focus { top: 1rem; }
.site-header { position: relative; border-bottom: 1px solid var(--line); background: rgba(255, 253, 248, .96); }
.brand-row, .utility-nav, .category-tabs, main, .site-footer { width: min(1440px, calc(100% - 2rem)); margin-inline: auto; }
.brand-row { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1rem 0 .7rem; }
.brand { display: inline-flex; gap: .65rem; align-items: center; font-size: 1.35rem; font-weight: 800; text-decoration: none; }
.brand small { display: block; font-size: .7rem; color: var(--muted); text-transform: uppercase; letter-spacing: .12em; }
.demo-badge { margin: 0; padding: .35rem .65rem; border-radius: 999px; background: #fff1cc; font-size: .8rem; font-weight: 700; }
.utility-nav { display: flex; gap: 1.25rem; flex-wrap: wrap; padding-bottom: .75rem; }
.utility-nav a { font-weight: 700; text-decoration: none; }
.category-tabs { display: flex; gap: .45rem; padding: .65rem 0; overflow-x: auto; scrollbar-width: thin; border-top: 1px solid var(--line); }
.nav-tab { flex: 0 0 auto; border: 1px solid var(--line); border-radius: 999px; background: white; padding: .5rem .78rem; cursor: pointer; }
.nav-tab:hover, .nav-tab[aria-expanded="true"] { color: white; background: var(--accent); border-color: var(--accent); }
.mega-menu { position: absolute; z-index: 20; left: 50%; transform: translateX(-50%); width: min(920px, calc(100% - 2rem)); padding: 1.25rem; border: 1px solid var(--line); border-radius: 0 0 1rem 1rem; background: white; box-shadow: var(--shadow); }
.mega-menu-grid, .card-grid, .product-grid, .tool-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
main { padding-block: 2.5rem 5rem; }
.hero { padding: clamp(1.5rem, 5vw, 4.5rem); border-radius: 1.4rem; background: radial-gradient(circle at top right, #fff1c8, transparent 40%), linear-gradient(135deg, #e4f2e8, #f9fbf5); border: 1px solid var(--line); }
.hero.compact { padding-block: 2rem; }
.hero h1 { max-width: 18ch; margin: .25rem 0 1rem; font-size: clamp(2rem, 5vw, 4.8rem); line-height: 1.02; letter-spacing: -.045em; }
.hero.compact h1 { font-size: clamp(2rem, 4vw, 3.4rem); }
.hero p { max-width: 72ch; }
.eyebrow { margin: 0 0 .4rem; color: var(--accent); font-size: .78rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: .8rem; margin: 1.2rem 0 0; }
.stats div, .compact-facts div { padding: .8rem; border-radius: .8rem; background: rgba(255,255,255,.8); }
.stats dt, .compact-facts dt { color: var(--muted); font-size: .8rem; }
.stats dd, .compact-facts dd { margin: 0; font-size: 1.3rem; font-weight: 800; }
.section-heading { display: flex; justify-content: space-between; gap: 1rem; align-items: end; margin: 3rem 0 1rem; }
.section-heading h2 { margin: 0; font-size: clamp(1.6rem, 3vw, 2.4rem); }
.category-card, .product-card, .tool-card, .interaction-lab, .prose, .product-hero { padding: 1.25rem; border: 1px solid var(--line); border-radius: 1rem; background: white; box-shadow: 0 6px 18px rgba(25, 50, 38, .05); }
.category-card h2, .category-card h3, .product-card h3, .tool-card h2 { margin: .2rem 0 .6rem; line-height: 1.2; }
.category-card a, .product-card h3 a, .tool-card a { text-decoration: none; }
.product-grid { grid-template-columns: repeat(auto-fit, minmax(285px, 1fr)); }
.product-card p { color: var(--muted); }
.compact-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: .45rem; margin: 1rem 0 0; }
.compact-facts div { padding: .5rem; background: var(--panel); }
.compact-facts dd { font-size: .95rem; }
.breadcrumbs { margin-bottom: 1rem; color: var(--muted); font-size: .9rem; }
.breadcrumbs a { color: inherit; }
.product-hero { display: grid; grid-template-columns: 1.2fr .8fr; gap: 2rem; }
.price { margin: .4rem 0; font-size: 2.2rem; font-weight: 900; }
.old-price { color: var(--muted); font-size: 1rem; text-decoration: line-through; }
.availability { color: var(--accent); font-weight: 800; }
.fact-table { width: 100%; border-collapse: collapse; }
.fact-table th, .fact-table td { padding: .65rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.fact-table th { width: 42%; color: var(--muted); }
.interaction-lab { margin-top: 2rem; border-color: #e7bb55; background: #fffaf0; }
.interaction-controls { display: flex; flex-wrap: wrap; gap: .6rem; margin: 1rem 0; }
.interaction-button, .button-link { display: inline-flex; border: 0; border-radius: .7rem; padding: .7rem 1rem; color: white; background: var(--accent); font-weight: 800; text-decoration: none; cursor: pointer; }
.interaction-button:hover, .interaction-button[aria-expanded="true"], .button-link:hover { color: white; background: var(--accent-strong); }
.interaction-panel { min-height: 4rem; padding: 1rem; border: 1px dashed #c7a45a; border-radius: .8rem; background: white; }
.interaction-panel h3 { margin-top: 0; }
.interaction-panel dl { display: grid; grid-template-columns: minmax(130px, .35fr) 1fr; gap: .35rem 1rem; }
.interaction-panel dt { font-weight: 800; }
.interaction-panel dd { margin: 0; }
.prose { max-width: 900px; margin: 2rem auto; }
.prose h2 { margin-top: 2rem; }
.site-footer { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; padding-block: 2rem; border-top: 1px solid var(--line); color: var(--muted); }
.site-footer nav { display: flex; gap: 1rem; }
.loading { color: var(--muted); }
.error { color: #9d251b; font-weight: 700; }
@media (max-width: 760px) {
  .brand-row, .product-hero { grid-template-columns: 1fr; display: grid; }
  .demo-badge { justify-self: start; }
  .compact-facts { grid-template-columns: 1fr; }
  .hero { padding: 1.4rem; }
  .interaction-panel dl { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: no-preference) {
  a, button { transition: color .15s ease, background-color .15s ease, transform .15s ease; }
  .category-card:hover, .product-card:hover { transform: translateY(-2px); }
}