:root {
  --blue-bg: #0d52c3;
  --blue-btn: #1f63c8;
  --blue-btn-light: #4fb4f3;
  --green-bg: #49a53d;
  --text-white: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Montserrat", "Manrope", sans-serif;
  background:
    radial-gradient(1000px 520px at 10% 10%, rgba(138, 170, 201, 0.24) 0%, rgba(138, 170, 201, 0) 60%),
    radial-gradient(820px 460px at 90% 90%, rgba(130, 166, 197, 0.22) 0%, rgba(130, 166, 197, 0) 58%),
    linear-gradient(135deg, #e3ebf4 0%, #d2dee9 50%, #c2d2e2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.landing-app {
  width: 100%;
  max-width: 520px;
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 45, 108, 0.22);
  background: #ffffff;
}

.landing-header {
  background: #d7e5ef;
  padding: 24px 20px 18px;
  border-bottom: 1px solid #c6d7e6;
}

.landing-logo {
  height: 52px;
  width: auto;
  display: block;
}

.landing-section {
  padding: 18px 18px 16px;
}

.landing-main {
  display: block;
}

.landing-section h2 {
  margin: 0 0 12px;
  color: var(--text-white);
  font-size: 23px;
  letter-spacing: 0.3px;
}

.section-blue {
  background: linear-gradient(170deg, #0e56c8 0%, #0b4fbf 100%);
}

.section-green {
  background: linear-gradient(170deg, #5aa94f 0%, #4a9f42 100%);
}

.landing-btn {
  width: 100%;
  display: block;
  text-align: center;
  text-decoration: none;
  color: var(--text-white);
  font-size: 21px;
  font-weight: 800;
  padding: 15px 12px;
  margin-bottom: 11px;
  border-radius: 11px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  background: linear-gradient(90deg, var(--blue-btn), var(--blue-btn-light));
  box-shadow: 0 8px 20px rgba(2, 34, 108, 0.2);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.landing-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(3, 39, 118, 0.28);
  filter: saturate(1.08);
}

.landing-btn:last-child {
  margin-bottom: 0;
}

.landing-footer {
  background: #0e56c8;
  color: #a9d4ff;
  border-top: 1px solid rgba(189, 226, 255, 0.3);
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3px;
  padding: 11px 10px 13px;
  text-transform: uppercase;
}

.landing-footer strong {
  color: #e0f3ff;
  font-weight: 800;
}

.landing-footer strong a {
  color: inherit;
  text-decoration: none;
}

.landing-footer strong a:hover {
  text-decoration: underline;
}

.landing-promo {
  background: #ffffff;
  padding: 10px 12px 8px;
  border-top: 1px solid #d7e5f1;
}

.landing-promo img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
}

@media (min-width: 1080px) {
  body {
    padding: 24px;
  }

  .landing-app {
    max-width: 1360px;
    width: 100%;
  }

  .landing-main {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    align-items: stretch;
  }

  .landing-section {
    padding: 22px;
  }

  .landing-section h2 {
    font-size: 22px;
    margin-bottom: 18px;
    line-height: 1.05;
    letter-spacing: 0.3px;
  }

  .landing-btn {
    font-size: 18px;
    line-height: 1.2;
    padding: 16px 14px;
    margin-bottom: 14px;
  }

  .landing-promo {
    padding: 14px;
    border-top: 0;
    border-left: 1px solid #d7e5f1;
    background: #ffffff;
    display: flex;
    align-items: stretch;
  }

  .landing-promo img {
    border-radius: 12px;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
}

@media (max-width: 520px) {
  body {
    padding: 0;
    align-items: stretch;
  }

  .landing-app {
    border-radius: 0;
    max-width: none;
    min-height: 100vh;
  }

  .landing-logo {
    height: 48px;
  }

  .landing-section h2 {
    font-size: 20px;
  }

  .landing-btn {
    font-size: 18px;
    padding: 14px 10px;
  }
}