/* Палитра и фон взяты из Mini App (miniapp/src/index.css): тот же градиент, карточки, акценты. */
:root {
  color-scheme: light;
  --bg-gradient:
    radial-gradient(circle at 18% 12%, rgba(47, 115, 255, 0.16), transparent 34%),
    radial-gradient(circle at 86% 52%, rgba(98, 176, 238, 0.16), transparent 28%),
    linear-gradient(180deg, #f7fbff 0%, #edf3fb 100%);
  --bg: #edf3fb;
  --surface: #ffffff;
  --border: #d5dbe5;
  --text: #111827;
  --muted: #667085;
  --accent: #2481cc;
  --btn-bg: #1c5fb0; /* белый текст на #2481cc даёт контраст 4.1 (<4.5), на #1c5fb0 — ок */
  --accent-text: #ffffff;
  --card-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.82), 0 18px 42px rgba(62, 82, 110, 0.16);
  --header-bg: rgba(247, 251, 255, 0.85);
  --gap: 28px;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg-gradient:
      radial-gradient(circle at 18% 14%, rgba(54, 130, 255, 0.16), transparent 34%),
      radial-gradient(circle at 88% 52%, rgba(98, 176, 238, 0.12), transparent 28%),
      linear-gradient(180deg, #0c1728 0%, #07111d 100%);
    --bg: #07111d;
    --surface: #1f2937;
    --border: #334155;
    --text: #f8fafc;
    --muted: #cbd5e1;
    --accent: #62b0ee;
    --btn-bg: #62b0ee;
    --accent-text: #07111d;
    --card-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03), 0 22px 56px rgba(0, 0, 0, 0.24);
    --header-bg: rgba(12, 23, 40, 0.85);
  }
}
@media (min-width: 720px) { :root { --gap: 40px; } }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body {
  margin: 0;
  background: var(--bg-gradient) fixed;
  background-color: var(--bg);
  color: var(--text);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
section.wrap, .final { padding-top: calc(var(--gap) / 2); padding-bottom: calc(var(--gap) / 2); }
.hero { padding: calc(var(--gap) * 0.8) 0 calc(var(--gap) / 2); }

h1 { font-size: clamp(28px, 6vw, 48px); line-height: 1.15; margin: 0 0 14px; letter-spacing: -0.02em; }
h2 { font-size: clamp(22px, 4vw, 30px); margin: 0 0 16px; letter-spacing: -0.01em; }
h3 { font-size: 18px; margin: 0 0 6px; }
p { margin: 0 0 10px; }
.lead { font-size: 18px; color: var(--muted); max-width: 640px; }
.muted { color: var(--muted); }
.small { font-size: 14px; }

.top { border-bottom: 1px solid var(--border); background: var(--header-bg); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 10; }
.top__row { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.logo { height: 28px; }

.btn {
  display: inline-block;
  background: var(--btn-bg);
  color: var(--accent-text);
  text-decoration: none;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: 12px;
  margin: 6px 0;
}
.btn:hover { filter: brightness(1.08); }
.btn--sm { padding: 8px 16px; font-size: 14px; margin: 0; }

.hero h1 { max-width: 780px; }

.grid { display: grid; gap: 14px; }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.steps { list-style: none; padding: 0; margin: 0; }
.card {
  border: 1px solid rgba(104, 131, 166, 0.38);
  background:
    radial-gradient(circle at 8% 0%, rgba(47, 115, 255, 0.1), transparent 30%),
    color-mix(in srgb, var(--surface) 88%, transparent);
  border-radius: 18px;
  box-shadow: var(--card-shadow);
  padding: 18px 20px;
}
.card p { color: var(--muted); margin: 0; }
.card--wide { padding: 24px; }
.num {
  display: inline-grid; place-items: center;
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--accent); color: var(--accent-text);
  font-weight: 700; font-size: 14px; margin-bottom: 10px;
}
.ico { width: 36px; height: 36px; margin-bottom: 10px; }

.solution { display: grid; gap: 20px; align-items: center; grid-template-columns: 1fr; }
@media (min-width: 800px) { .solution { grid-template-columns: 1fr 1fr; } }
.shot {
  display: block;
  width: 100%;
  max-width: 360px;
  height: auto;
  margin: 0 auto;
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--card-shadow);
}

.faq details {
  border: 1px solid rgba(104, 131, 166, 0.38);
  background:
    radial-gradient(circle at 8% 0%, rgba(47, 115, 255, 0.1), transparent 30%),
    color-mix(in srgb, var(--surface) 88%, transparent);
  border-radius: 14px; box-shadow: var(--card-shadow); padding: 14px 18px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { margin: 10px 0 0; color: var(--muted); }

.final { text-align: center; }
.foot { padding-top: 16px; padding-bottom: 32px; text-align: center; }