:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-2: #e8f4f8;
  --text: #0f172a;
  --muted: #475569;
  --border: #dbe3ef;
  --accent: #0b4f6c;
  --accent-strong: #083c52;
  --warning: #92400e;
  --warning-bg: #fff7ed;
  --danger: #991b1b;
  --danger-bg: #fef2f2;
  --shadow: 0 20px 50px rgba(15, 23, 42, 0.08);
  --radius: 20px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #020617;
    --surface: #0f172a;
    --surface-2: #111c31;
    --text: #e5e7eb;
    --muted: #a8b3c7;
    --border: #24324a;
    --accent: #8ac7e8;
    --accent-strong: #b7e4f7;
    --warning: #fed7aa;
    --warning-bg: #2c1a0a;
    --danger: #fecaca;
    --danger-bg: #2b0d0d;
    --shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}

html[data-lang="uk"] [data-lang-block="en"],
html[data-lang="en"] [data-lang-block="uk"] { display: none !important; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; font-size: 0.92em; background: var(--surface-2); padding: 0.12rem 0.35rem; border-radius: 0.45rem; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.narrow { width: min(850px, calc(100% - 32px)); }
.skip-link { position: absolute; left: 1rem; top: -10rem; background: var(--surface); padding: 0.75rem 1rem; z-index: 20; border-radius: 0.5rem; }
.skip-link:focus { top: 1rem; }
.site-header { position: sticky; top: 0; backdrop-filter: blur(14px); background: color-mix(in srgb, var(--bg) 88%, transparent); border-bottom: 1px solid var(--border); z-index: 10; }
.header-inner { display: flex; align-items: center; gap: 1rem; min-height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 0.65rem; color: var(--text); font-weight: 800; letter-spacing: -0.02em; }
.brand:hover { text-decoration: none; }
.brand-mark { display: block; width: 42px; height: 42px; border-radius: 12px; box-shadow: 0 6px 18px rgba(11, 79, 108, 0.18); }
.main-nav { display: flex; gap: 0.2rem; align-items: center; margin-left: auto; flex-wrap: wrap; }
.main-nav a, .lang-switch a { color: var(--muted); padding: 0.48rem 0.72rem; border-radius: 999px; font-size: 0.95rem; }
.main-nav a:hover, .main-nav a.active, .lang-switch a:hover, .lang-switch a.active { color: var(--text); background: var(--surface-2); text-decoration: none; }
.lang-switch { display: flex; gap: 0.15rem; padding-left: 0.5rem; border-left: 1px solid var(--border); }
.hero { padding: 88px 0 72px; background: radial-gradient(circle at 20% 0%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 32%), radial-gradient(circle at 100% 20%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 30%); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.72fr); gap: 44px; align-items: center; }
.eyebrow { color: var(--accent-strong); font-weight: 800; text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.78rem; margin-bottom: 1rem; }
h1 { font-size: clamp(2.4rem, 5vw, 4.9rem); line-height: 0.98; letter-spacing: -0.06em; margin: 0 0 1.25rem; }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); line-height: 1.08; letter-spacing: -0.04em; margin: 0 0 1rem; }
h3 { margin: 0 0 0.7rem; font-size: 1.15rem; }
p { margin: 0 0 1rem; }
.lead { font-size: clamp(1.08rem, 1.8vw, 1.32rem); color: var(--muted); max-width: 68ch; }
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin: 1.7rem 0 1rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0.72rem 1.05rem; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); color: var(--text); font-weight: 700; box-shadow: 0 4px 14px rgba(15, 23, 42, 0.04); }
.button:hover { text-decoration: none; transform: translateY(-1px); }
.button.primary { background: var(--accent); border-color: var(--accent); color: white; }
.button.ghost { background: transparent; }
.tiny { color: var(--muted); font-size: 0.86rem; }
.phone-card { background: var(--surface); border: 1px solid var(--border); border-radius: 32px; padding: 1rem; box-shadow: var(--shadow); max-width: 380px; margin-left: auto; }
.phone-top { width: 72px; height: 5px; border-radius: 999px; background: var(--border); margin: 0.25rem auto 1.1rem; }
.scan-card { background: var(--surface-2); border-radius: 24px; padding: 1.2rem; margin-bottom: 1rem; }
.status-dot { display: inline-block; width: 0.75rem; height: 0.75rem; border-radius: 50%; background: #2e7d32; margin-right: 0.45rem; }
.field-row { display: flex; justify-content: space-between; gap: 1rem; padding: 0.8rem 0.2rem; border-bottom: 1px solid var(--border); }
.field-row:last-child { border-bottom: 0; }
.section { padding: 64px 0; }
.section.alt { background: var(--surface-2); }
.page-hero { padding: 72px 0 52px; background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 11%, transparent), transparent); }
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: clamp(1.2rem, 2.4vw, 1.75rem); box-shadow: var(--shadow); }
.compact p { margin-bottom: 0.45rem; }
.warning-card { background: var(--warning-bg); border-color: color-mix(in srgb, var(--warning) 28%, var(--border)); }
.warning-card h2, .warning-card strong { color: var(--warning); }
.danger-card { background: var(--danger-bg); border-color: color-mix(in srgb, var(--danger) 30%, var(--border)); }
.danger-card h2, .danger-card strong { color: var(--danger); }
.check-list, .legal-text ul { padding-left: 1.25rem; }
.check-list li, .legal-text li { margin-bottom: 0.55rem; }
.pill-grid { display: flex; flex-wrap: wrap; gap: 0.7rem; }
.pill-grid span { display: inline-flex; padding: 0.68rem 0.9rem; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); font-weight: 700; }
.section-heading { margin-bottom: 1.5rem; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 1rem; align-items: start; }
.meta-box { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.2rem; margin-top: 1.5rem; }
.meta-box p { margin: 0.35rem 0; }
.legal-text h2 { margin-top: 2.25rem; padding-top: 0.25rem; }
.legal-text h2:first-child { margin-top: 0; }
details { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 1rem 1.15rem; margin-bottom: 0.8rem; }
summary { cursor: pointer; font-weight: 800; }
.meta-list { display: grid; grid-template-columns: minmax(120px, 180px) 1fr; gap: 0.6rem 1rem; }
.meta-list dt { font-weight: 800; color: var(--muted); }
.meta-list dd { margin: 0; overflow-wrap: anywhere; }
.site-footer { border-top: 1px solid var(--border); background: var(--surface); padding: 36px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 1.2rem; }
.footer-grid ul { list-style: none; padding: 0; margin: 0.55rem 0 0; }
.footer-grid li { margin-bottom: 0.35rem; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.75rem; margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--border); color: var(--muted); font-size: 0.92rem; }
.muted { color: var(--muted); }

@media (max-width: 820px) {
  .header-inner { align-items: flex-start; padding: 0.8rem 0; flex-wrap: wrap; }
  .main-nav { order: 3; width: 100%; margin-left: 0; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 0.1rem; }
  .lang-switch { margin-left: auto; }
  .hero { padding-top: 54px; }
  .hero-grid, .feature-grid, .split, .footer-grid { grid-template-columns: 1fr; }
  .phone-card { margin: 0; max-width: none; }
  h1 { letter-spacing: -0.045em; }
}