*, *::before, *::after { box-sizing: border-box; }
body, h1, h2, h3, p, ul { margin: 0; }
ul { padding: 0; list-style: none; }

:root {
  --bg: #ffffff;
  --surface: #f5f7f7;
  --text: #16211f;
  --muted: #4a5a57;
  --accent: #1f645d;
  --border: #dde4e3;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101615;
    --surface: #182220;
    --text: #e8efed;
    --muted: #a3b3b0;
    --accent: #6fc7bc;
    --border: #263331;
  }
}

body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}

main, .site-header, .site-footer {
  max-width: 62rem;
  margin-inline: auto;
  padding-inline: 1.5rem;
}

a { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* header */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.25rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: .6rem;
  color: var(--accent);
  text-decoration: none;
}
.mark { width: 2rem; height: 2rem; flex: none; }
.wordmark {
  color: var(--text);
  font-weight: 700;
  letter-spacing: .18em;
  font-size: 1.05rem;
}
#lang-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .08em;
  padding: .35rem .9rem;
}
#lang-toggle:hover { border-color: var(--accent); color: var(--accent); }

/* hero */
.hero {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  align-items: center;
  gap: 2.5rem;
  padding-block: 4rem 5rem;
}
h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -.02em;
}
.lead {
  color: var(--muted);
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  margin-block: 1.25rem 2rem;
  max-width: 34rem;
}
.cta {
  background: var(--accent);
  border-radius: 6px;
  color: var(--bg);
  display: inline-block;
  font-weight: 600;
  padding: .75rem 1.5rem;
  text-decoration: none;
}
.cta:hover { filter: brightness(1.1); }
.hero-art { width: 100%; height: auto; color: var(--accent); }

/* sections */
section { padding-block: 3rem; }
h2 {
  font-size: 1.5rem;
  letter-spacing: -.01em;
  margin-bottom: 2rem;
}
h3 { font-size: 1.05rem; margin-bottom: .4rem; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1rem;
}
.cards li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
}
.cards p, .points p { color: var(--muted); }

.points {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 2rem;
}

/* contact */
.contact p { color: var(--muted); }
.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: 1.15rem;
  font-weight: 600;
  margin-top: 1rem;
}

/* footer */
.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: .875rem;
  padding-block: 2rem 3rem;
}
.site-footer strong { color: var(--text); }
.legal, .copyright { margin-top: .75rem; }

@media (max-width: 640px) {
  .hero { grid-template-columns: 1fr; padding-block: 2.5rem 3rem; }
  .hero-art { max-width: 20rem; }
}