:root {
  --bg: #f8fafb;
  --surface: #ffffff;
  --text: #0f1b1a;
  --muted: #5a6b69;
  --border: #dde5e4;
  --accent: #0f766e;
  --accent-text: #ffffff;
  --tag: #e6f3f1;
  --max: 960px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1211;
    --surface: #121c1b;
    --text: #e8f0ef;
    --muted: #93a8a5;
    --border: #22332f;
    --accent: #2dd4bf;
    --accent-text: #05221f;
    --tag: #16312d;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
.nav {
  position: sticky; top: 0; z-index: 10;
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px max(16px, calc((100vw - var(--max)) / 2));
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 800; font-size: 1.2rem; color: var(--text); text-decoration: none; }
.brand span { color: var(--accent); }
.nav nav { display: flex; gap: 18px; align-items: center; }
.nav nav a { color: var(--muted); text-decoration: none; font-size: .95rem; }
.nav nav a:hover { color: var(--text); }
#lang {
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  border-radius: 8px; padding: 4px 10px; cursor: pointer; font: inherit; font-size: .85rem;
}
main, footer { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
section { padding: 56px 0 8px; scroll-margin-top: 60px; }
.hero { padding-top: 88px; }
.eyebrow { color: var(--accent); font-weight: 600; margin: 0 0 8px; }
h1 { font-size: clamp(2.4rem, 7vw, 4rem); line-height: 1.1; margin: 0; letter-spacing: -.02em; }
.role { font-size: 1.3rem; color: var(--muted); margin: 8px 0 16px; }
.lead { max-width: 60ch; font-size: 1.1rem; }
h2 { font-size: 1.6rem; margin: 0 0 16px; }
h3 { margin: 0 0 6px; font-size: 1.05rem; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.btn {
  display: inline-block; padding: 10px 18px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text); text-decoration: none; font-weight: 600;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.btn.wa { background: #25d366; color: #05301a; border-color: #25d366; display: inline-flex; align-items: center; gap: 8px; }
.btn.wa:hover { filter: brightness(.95); }
.wa-float {
  position: fixed; right: 18px; bottom: 18px; z-index: 20;
  width: 56px; height: 56px; border-radius: 50%;
  background: #25d366; color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 18px rgba(0, 0, 0, .25);
  transition: transform .15s;
}
.wa-float:hover { transform: scale(1.08); }
.facts { list-style: none; display: flex; flex-wrap: wrap; gap: 28px; padding: 0; margin: 32px 0 0; }
.facts strong { font-size: 1.5rem; display: block; line-height: 1.2; }
.facts span { color: var(--muted); font-size: .9rem; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.grid.stack article, .card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 18px;
}
.card p { margin: 0 0 10px; color: var(--muted); font-size: .95rem; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 0; }
.tags span {
  background: var(--tag); color: var(--text);
  border-radius: 999px; padding: 2px 10px; font-size: .8rem;
}
.card .tags { margin-bottom: 12px; }
.links { display: flex; gap: 14px; margin: 0; }
.links a { font-weight: 600; font-size: .9rem; }
.note { color: var(--muted); margin-top: 20px; font-size: .95rem; }
footer { padding: 48px 16px 32px; color: var(--muted); font-size: .9rem; }
@media (max-width: 560px) {
  .nav nav a:not(#lang) { display: none; }
  .hero { padding-top: 56px; }
}