*,
*::before,
*::after { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: #16181D;
  color: #E7E9EE;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 18px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: #7FA9F5; }

/* ── Заглушка и страница «не найдено» ───────────────────────────── */

.stub {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 24px;
  text-align: center;
}

.stub__mark {
  margin: 0;
  font-size: 28px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.stub__note {
  margin: 0;
  font-size: 16px;
  color: #9AA1AE;
}

/* ── Sales Kit ──────────────────────────────────────────────────── */

.kit {
  max-width: 900px;
  margin: 0 auto;
  padding: 56px 24px 96px;
}

.kit__brand {
  margin: 0 0 8px;
  font-size: 15px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #7A8394;
}

.kit__title {
  margin: 0 0 12px;
  font-size: 38px;
  line-height: 1.2;
  font-weight: 650;
}

.kit__lead {
  margin: 0 0 48px;
  font-size: 20px;
  color: #B4BBC7;
  max-width: 640px;
}

.block {
  border: 1px solid #272B33;
  border-radius: 14px;
  background: #1B1E26;
  padding: 28px;
  margin-bottom: 20px;
}

.block--soon { background: #191B22; border-style: dashed; }

.block__step {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 10px;
  border-radius: 999px;
  background: #232833;
  color: #8E97A6;
  font-size: 14px;
  letter-spacing: 0.06em;
}

.block__title {
  margin: 0 0 10px;
  font-size: 25px;
  font-weight: 620;
}

.block__text {
  margin: 0 0 20px;
  font-size: 18px;
  color: #B4BBC7;
  max-width: 620px;
}

.block__text:last-child { margin-bottom: 0; }

.button {
  display: inline-block;
  padding: 14px 26px;
  border-radius: 10px;
  background: #356BD4;
  color: #FFFFFF;
  font-size: 18px;
  font-weight: 600;
  text-decoration: none;
}

.button:hover { background: #2358C3; }

.button--quiet {
  background: transparent;
  color: #C6CDD9;
  border: 1px solid #333944;
}

.button--quiet:hover { background: #232833; }

.mark-soon {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  background: #2A2418;
  color: #D8B063;
  font-size: 14px;
}

.kit__contact {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid #272B33;
  font-size: 17px;
  color: #9AA1AE;
}

.kit__contact a { text-decoration: none; }

@media (max-width: 640px) {
  .kit { padding: 36px 18px 72px; }
  .kit__title { font-size: 30px; }
  .kit__lead { font-size: 18px; margin-bottom: 32px; }
  .block { padding: 22px; }
  .block__title { font-size: 22px; }
}