/* Светлый редизайн с акцентом #1F6FEB, минималистичный UI */
:root {
  --bg: #ffffff;
  --bg-soft: #f6f8fb;
  --text: #1b2a44;
  --muted: #3b5478;
  --muted-2: #6b86ad;
  --primary: #1f6feb;
  --ring: rgba(31, 111, 235, 0.25);
  --card: #ffffff;
  --stroke: #e3e8f0;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: linear-gradient(180deg, #ffffff, #fbfdff 60%, #f6f8fb);
}

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(140%) blur(8px);
  background: rgba(255,255,255,0.8);
  border-bottom: 1px solid var(--stroke);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; }
.menu { display: flex; gap: 18px; align-items: center; }
.menu a { color: var(--muted); text-decoration: none; padding: 8px 10px; border-radius: 8px; }
.menu a:hover { color: var(--text); background: var(--bg-soft); }

/* Языковой переключатель: компактный дропдаун */
.lang { position: relative; }
.lang-btn { list-style: none; cursor: pointer; border: 1px solid var(--stroke); background: var(--card); color: var(--muted); padding: 6px 10px; border-radius: 10px; font-size: 12px; }
.lang[open] .lang-btn { background: var(--bg-soft); color: var(--text); }
.lang-menu { position: absolute; top: calc(100% + 6px); right: 0; min-width: 140px; background: var(--card); border: 1px solid var(--stroke); border-radius: 12px; box-shadow: 0 12px 28px rgba(16,30,54,.12); padding: 6px; }
.lang-menu a { display: block; padding: 8px 10px; color: var(--muted); border-radius: 8px; }
.lang-menu a:hover { background: var(--bg-soft); color: var(--text); }

.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 16px; border-radius: 12px; text-decoration: none; color: white; border: 1px solid transparent; }
.btn-small { padding: 8px 12px; font-size: 14px; }
.btn-large { padding: 14px 20px; font-size: 18px; }
.btn.primary { background: linear-gradient(135deg, var(--primary), #5aa0ff); border-color: transparent; box-shadow: 0 8px 24px rgba(31,111,235,0.35); }
.btn.primary:hover { filter: brightness(1.05); }

.hero { padding: 56px 0 24px; background: linear-gradient(180deg, transparent, #f6f8fb 85%, transparent); }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 32px; align-items: center; }
.hero h1 { font-size: clamp(28px, 3.2vw, 44px); line-height: 1.1; margin: 0 0 12px; }
.lead { color: var(--muted); font-size: clamp(16px, 2vw, 20px); margin: 0 0 18px; }
.cta { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 12px; }
.note { color: var(--muted); font-size: 14px; }
.bullets { margin: 16px 0 0; padding: 0 0 0 18px; color: var(--muted); }
.bullets li { margin: 6px 0; }
.hero-art img { width: 100%; height: auto; border-radius: 16px; box-shadow: 0 16px 48px rgba(16,30,54,.12), 0 0 0 1px var(--stroke) inset; background: linear-gradient(135deg, rgba(31,111,235,.08), rgba(16,30,54,.03)); }

.section { padding: 56px 0; }
.section.alt { background: var(--bg-soft); }
.section h2 { margin: 0 0 16px; font-size: 28px; }
.section-lead { color: var(--muted); margin: 0 0 20px; }

.feature-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
.card { background: var(--card); border: 1px solid var(--stroke); border-radius: 16px; padding: 20px; }
.card-ill { width: 100%; height: auto; margin-bottom: 10px; }
.card ul { margin: 0; padding-left: 18px; color: var(--muted); }
.card li { margin: 6px 0; }

/* Плитка преимуществ */
.tiles { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.tile { background: var(--card); border: 1px solid var(--stroke); border-radius: 16px; padding: 16px; text-align: left; }
.tile-ill { width: 100%; height: 50px; object-fit: cover; border-radius: 10px; margin-bottom: 10px; background: linear-gradient(135deg, rgba(31,111,235,.06), rgba(16,30,54,.02)); box-shadow: 0 6px 18px rgba(16,30,54,.06); }
.tile h3 { margin: 8px 0 6px; font-size: 18px; }
.tile p { margin: 0; color: var(--muted); }

.ux-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.ux-item { background: var(--card); border: 1px solid var(--stroke); border-radius: 16px; padding: 16px; }
.ux-item h3 { margin: 12px 0 8px; font-size: 18px; }
.ux-item p { margin: 0; color: var(--muted); }
.ux-item img { width: 100%; height: auto; border-radius: 12px; background: linear-gradient(135deg, rgba(31,111,235,.06), rgba(16,30,54,.02)); box-shadow: 0 8px 32px rgba(16,30,54,.08); }

.settings-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.setting { background: var(--card); border: 1px solid var(--stroke); border-radius: 16px; padding: 16px; }
.setting h3 { margin: 6px 0 6px; font-size: 16px; }
.setting p { margin: 0; color: var(--muted); }

.scenarios { margin: 0; padding-left: 18px; color: var(--muted); }
.scenarios li { margin: 6px 0; }

.cta-final { padding: 48px 0 72px; text-align: center; }
.cta-final .note { margin-top: 6px; }

.site-footer { border-top: 1px solid var(--stroke); padding: 16px 0; color: var(--muted); background: #fff; }
.foot { display: flex; align-items: center; justify-content: space-between; }

@media (max-width: 1024px) {
  .ux-grid { grid-template-columns: 1fr 1fr; }
  .settings-grid { grid-template-columns: 1fr 1fr 1fr; }
  .hero-grid { grid-template-columns: 1fr; }
  .tiles { grid-template-columns: 1fr 1fr 1fr; }
}

@media (max-width: 640px) {
  .menu a { display: none; }
  .menu .btn { display: inline-flex; }
  .ux-grid { grid-template-columns: 1fr; }
  .settings-grid { grid-template-columns: 1fr; }
  .tiles { grid-template-columns: 1fr 1fr; }
}