:root {
  --bg: #fafafc;
  --surface: #ffffff;
  --text: #15161b;
  --muted: #5d6270;
  --border: #e5e6ec;
  --accent: #4f46e5;
  --accent-2: #8b83ff;
  --accent-soft: #eceafe;
  --on-accent: #ffffff;
  --radius: 16px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0e12;
    --surface: #15171d;
    --text: #eceef4;
    --muted: #a2a7b4;
    --border: #262a33;
    --accent: #8b83ff;
    --accent-2: #4f46e5;
    --accent-soft: #1c1b33;
    --on-accent: #0d0e12;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { width: 100%; max-width: 1080px; margin-inline: auto; padding-inline: 20px; }

section[id] { scroll-margin-top: 80px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 1.1rem; letter-spacing: -0.01em; }
.brand:hover { text-decoration: none; }
.brand svg { width: 30px; height: 30px; flex: none; }
.nav nav { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.nav nav a { color: var(--muted); font-size: 0.95rem; }
.nav nav a:hover { color: var(--text); text-decoration: none; }
.nav .lang { border: 1px solid var(--border); border-radius: 999px; padding: 2px 10px; font-size: 0.8rem; font-weight: 600; }

/* Hero */
.hero { display: grid; grid-template-columns: 1.25fr 1fr; gap: 48px; align-items: center; padding-block: 88px 72px; }
.eyebrow { color: var(--accent); font-weight: 600; font-size: 0.9rem; letter-spacing: 0.02em; margin: 0 0 12px; }
h1 { font-size: clamp(2.1rem, 4.6vw, 3.5rem); line-height: 1.08; letter-spacing: -0.025em; margin: 0 0 20px; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 36em; margin: 0 0 32px; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 20px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
}
.btn:hover { text-decoration: none; border-color: var(--muted); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }

.hero-art {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  width: 100%;
  max-width: 300px;
  justify-self: center;
  transform: rotate(-8deg);
}
.tile { aspect-ratio: 1; border-radius: 26%; background: var(--accent-soft); border: 1px solid var(--border); }
.tile.a { background: var(--accent); border-color: transparent; }
.tile.b { background: var(--accent-2); border-color: transparent; }
.tile.fold { background: linear-gradient(135deg, var(--accent) 0 50%, var(--accent-2) 50% 100%); border-color: transparent; }

/* Sections */
.section { padding-block: 56px; border-top: 1px solid var(--border); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); letter-spacing: -0.02em; margin: 0 0 28px; line-height: 1.2; }
h3 { font-size: 1.1rem; margin: 0 0 8px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.card p { margin: 0 0 8px; }
.card p:last-child { margin-bottom: 0; }
.muted { color: var(--muted); }
.badge {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding-block: 28px; color: var(--muted); font-size: 0.9rem; }
.footer-inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: center; }
.footer-inner p { margin: 0; }
.footer-inner nav { display: flex; gap: 18px; flex-wrap: wrap; }
.footer-inner a { color: var(--muted); }

/* Documents: legal notice, privacy, support */
.doc { max-width: 760px; padding-block: 56px 72px; }
.doc h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); }
.doc h2 { font-size: 1.25rem; margin: 36px 0 10px; }
.doc h3 { font-size: 1.05rem; margin: 24px 0 6px; }
.doc ul { padding-left: 1.2em; }
.doc-lang { display: flex; gap: 8px; font-size: 0.9rem; margin: 0 0 24px; }
.doc hr { border: 0; border-top: 1px solid var(--border); margin: 56px 0; }
.note { background: var(--accent-soft); border-radius: 12px; padding: 12px 16px; }

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; padding-block: 56px 48px; gap: 40px; }
  .hero-art { max-width: 200px; justify-self: start; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .nav nav { gap: 14px; }
  .nav nav .hide-sm { display: none; }
  .hero-art { display: none; }
}