/* Biro Systems – shared stylesheet. No external fonts or resources (privacy + CSP). */
:root {
  --ink: #15191f;
  --ink-soft: #4a525e;
  --paper: #f6f5f1;
  --card: #ffffff;
  --line: #dedbd3;
  --accent: #b8430f;
  --accent-ink: #ffffff;
  --maxw: 1080px;
  --radius: 10px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #ecebe6;
    --ink-soft: #a7adb6;
    --paper: #12151a;
    --card: #1a1e25;
    --line: #2c323b;
    --accent: #f07a3e;
    --accent-ink: #12151a;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { border-bottom: 1px solid var(--line); }
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap; padding-top: 18px; padding-bottom: 18px;
}
.logo {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--ink); text-decoration: none; font-weight: 700;
  letter-spacing: 0.02em; font-size: 1.15rem;
}
.logo-mark {
  width: 22px; height: 22px; border-radius: 5px; background: var(--accent);
  position: relative; flex: none;
}
.logo-mark::after {
  content: ""; position: absolute; inset: 6px; border-radius: 2px; background: var(--paper);
}
.nav { display: flex; gap: 22px; flex-wrap: wrap; }
.nav a { color: var(--ink-soft); text-decoration: none; font-size: 0.95rem; }
.nav a:hover { color: var(--ink); }

.header-right { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.lang-switch {
  display: inline-flex; gap: 2px; padding: 2px;
  border: 1px solid var(--line); border-radius: 7px;
  font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.04em;
}
.lang-switch a, .lang-switch span { padding: 3px 9px; border-radius: 5px; text-decoration: none; line-height: 1.4; }
.lang-switch a { color: var(--ink-soft); }
.lang-switch a:hover { color: var(--ink); background: var(--card); }
.lang-switch [aria-current] { background: var(--ink); color: var(--paper); }

/* Hero */
.hero { padding: 88px 0 72px; }
.eyebrow {
  font-family: var(--mono); font-size: 0.85rem; color: var(--accent);
  letter-spacing: 0.06em; text-transform: uppercase; margin: 0 0 18px;
}
.hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.4rem); line-height: 1.12;
  letter-spacing: -0.02em; margin: 0 0 22px; max-width: 18ch;
}
.hero p.lead { font-size: 1.2rem; color: var(--ink-soft); max-width: 58ch; margin: 0 0 32px; }
.btn {
  display: inline-block; background: var(--accent); color: var(--accent-ink);
  padding: 12px 22px; border-radius: var(--radius); text-decoration: none; font-weight: 600;
}
.btn:hover { filter: brightness(1.08); }

/* Sections */
section { padding: 64px 0; border-top: 1px solid var(--line); }
section h2 { font-size: 1.8rem; letter-spacing: -0.01em; margin: 0 0 12px; }
section > .wrap > p.intro { color: var(--ink-soft); margin: 0 0 36px; }

.grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px;
}
.card h3 { margin: 0 0 10px; font-size: 1.15rem; }
.card p { margin: 0 0 14px; color: var(--ink-soft); }
.card ul { margin: 0; padding-left: 18px; color: var(--ink-soft); font-size: 0.95rem; }

.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); counter-reset: step; }
.steps li { counter-increment: step; border-top: 3px solid var(--accent); padding-top: 16px; }
.steps li::before {
  content: "0" counter(step); font-family: var(--mono); color: var(--accent);
  font-size: 0.9rem; display: block; margin-bottom: 6px;
}
.steps h3 { margin: 0 0 6px; font-size: 1.1rem; }
.steps p { margin: 0; color: var(--ink-soft); font-size: 0.97rem; }

.contact-box {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px; max-width: 640px;
}
.contact-box p { margin: 0 0 10px; }
.contact-box .big { font-size: 1.25rem; font-weight: 600; }

/* Legal pages */
.legal { padding: 56px 0 72px; }
.legal h1 { font-size: 2.1rem; margin: 0 0 28px; letter-spacing: -0.01em; }
.legal h2 { font-size: 1.25rem; margin: 36px 0 10px; }
.legal p, .legal li { max-width: 72ch; }
.legal .note { font-size: 0.92rem; color: var(--ink-soft); border-left: 3px solid var(--accent); padding-left: 12px; }
.placeholder { background: #ffe9a8; color: #3a2e00; padding: 0 4px; border-radius: 3px; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 28px 0; font-size: 0.9rem; color: var(--ink-soft); }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.site-footer a { color: var(--ink-soft); }
.site-footer nav { display: flex; gap: 18px; }

@media (max-width: 600px) {
  body { font-size: 16px; }
  .hero { padding: 56px 0 48px; }
  section { padding: 48px 0; }
}