:root {
  color-scheme: light;
  --navy: #234a6e;
  --orange: #ee8a35;
  --ink: #2b3440;
  --muted: #5d6b79;
  --sky: #eaf3fb;
  --cream: #fff6ec;
  --line: #d7e3ed;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", sans-serif;
  background: linear-gradient(180deg, var(--sky) 0%, #fff 48%, var(--cream) 100%);
}

.shell {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 52px;
}

.brand {
  color: var(--navy);
  font-weight: 800;
  letter-spacing: .12em;
  text-align: center;
}

h1 {
  margin: 18px 0 10px;
  color: var(--navy);
  font-size: clamp(2rem, 7vw, 4rem);
  line-height: 1.08;
  text-align: center;
}

.intro {
  margin: 0 auto 30px;
  max-width: 620px;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
  text-align: center;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 290px;
  padding: 26px;
  border: 2px solid var(--line);
  border-radius: 24px;
  background: rgba(255,255,255,.94);
  box-shadow: 0 10px 30px rgba(35,74,110,.08);
}

.card:nth-child(2) { background: rgba(255,246,236,.96); }

.badge {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  font-size: 1.45rem;
}

.card h2 {
  margin: 0;
  color: var(--navy);
  font-size: 1.55rem;
}

.en {
  margin-top: -8px;
  color: var(--muted);
  font-size: .95rem;
}

.card p { margin: 0; line-height: 1.65; }

audio { width: 100%; margin-top: auto; }

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 50px;
  padding: 12px 20px;
  border-radius: 999px;
  color: #fff;
  background: var(--orange);
  font-weight: 800;
  text-decoration: none;
}

.single {
  max-width: 600px;
  margin: 32px auto 0;
}

.single .card { min-height: 330px; }

.back {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--navy);
  font-weight: 700;
  text-decoration: none;
}

footer {
  margin-top: 34px;
  color: var(--muted);
  font-size: .9rem;
  text-align: center;
}

@media (max-width: 680px) {
  .shell { padding-top: 28px; }
  .grid { grid-template-columns: 1fr; }
  .card { min-height: 260px; padding: 22px; }
}