:root {
  --level-1-blue: #4a90d9;
  --level-1-blue-dark: #3b7fc3;
  --level-2-blue: #3979b8;
  --level-2-blue-dark: #2f669d;
  --level-3-blue: #295f91;
  --level-3-blue-dark: #214d76;
  --level-blue-light: #eaf3fc;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  background: #fff;
  color: #222;
  font-family: "Segoe UI", Arial, sans-serif;
  padding: 42px 16px;
}

.base-page {
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
}

.base-header {
  margin-bottom: 25px;
  text-align: center;
}

.base-header h1 {
  color: #1e3a8a;
  font-size: 1.65rem;
  line-height: 1.2;
}

.base-header p {
  margin-top: 7px;
  color: #71808e;
  font-size: .94rem;
  line-height: 1.45;
}

.information {
  margin: 0 0 22px;
  padding: 12px 14px;
  border-left: 3px solid var(--level-1-blue);
  border-radius: 0 10px 10px 0;
  background: #f6f9fc;
  color: #52677b;
  font-size: .88rem;
  line-height: 1.5;
}

.information strong {
  display: block;
  margin-bottom: 3px;
  color: #315f8d;
}

.base-menu {
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.base-choice {
  display: block;
  width: 100%;
  min-height: 78px;
  padding: 16px 18px;
  border: 2px solid var(--level-1-blue);
  border-radius: 14px;
  background: var(--level-1-blue);
  color: #fff;
  text-align: left;
  text-decoration: none;
  box-shadow: 0 5px 16px rgba(49, 95, 141, .12);
  transition: transform .15s, background .15s, box-shadow .15s;
}

.base-choice strong {
  display: block;
  font-size: 1.08rem;
  line-height: 1.25;
}

.base-choice span {
  display: block;
  margin-top: 4px;
  color: var(--level-blue-light);
  font-size: .84rem;
  font-weight: 500;
  line-height: 1.4;
}

.base-choice:hover,
.base-choice:focus-visible {
  transform: translateY(-2px);
  border-color: var(--level-1-blue-dark);
  background: var(--level-1-blue-dark);
  box-shadow: 0 8px 22px rgba(49, 95, 141, .2);
  outline: 3px solid rgba(74, 144, 217, .18);
  outline-offset: 2px;
}

.base-choice:active {
  transform: translateY(0);
}

.level-two-page {
  max-width: 460px;
}

.level-two-page .base-choice {
  min-height: 0;
  padding: 17px 24px;
  border: 0;
  border-radius: 50px;
  background: var(--level-2-blue);
  text-align: center;
  box-shadow: 0 6px 20px rgba(57, 121, 184, .32);
  transition: transform .18s, box-shadow .18s, background .18s;
}

.level-two-page .base-choice:hover,
.level-two-page .base-choice:focus-visible {
  transform: translateY(-3px);
  background: var(--level-2-blue-dark);
  box-shadow: 0 10px 28px rgba(57, 121, 184, .5);
}

.level-two-page .base-choice:active {
  transform: translateY(0);
}

.level-three-page .base-choice {
  min-height: 0;
  padding: 17px 24px;
  border: 0;
  border-radius: 50px;
  border-color: var(--level-3-blue);
  background: var(--level-3-blue);
  text-align: center;
  box-shadow: 0 5px 16px rgba(41, 95, 145, .2);
  transition: transform .18s, box-shadow .18s, background .18s;
}

.level-three-page .base-choice:hover,
.level-three-page .base-choice:focus-visible {
  transform: translateY(-3px);
  border-color: var(--level-3-blue-dark);
  background: var(--level-3-blue-dark);
  box-shadow: 0 10px 28px rgba(41, 95, 145, .45);
}

.level-three-page .base-choice:active {
  transform: translateY(0);
}

.level-three-page .information {
  border-left-color: var(--level-3-blue);
}

@media (max-width: 420px) {
  body { padding-top: 68px; }
  .base-choice { min-height: 74px; }
  .level-two-page .base-choice { min-height: 0; }
  .level-three-page .base-choice { min-height: 0; }
}