:root {
  color-scheme: light;
  --bg: #f7f9fd;
  --surface: #ffffff;
  --text: #27292e;
  --muted: #667085;
  --line: #dce3ef;
  --primary: #5676f6;
  --primary-dark: #3453d8;
  --green: #2f8f68;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: var(--primary-dark);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.page {
  width: min(960px, 100%);
  margin: 0 auto;
  padding: 32px 20px 56px;
}

.top-nav {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  font-weight: 700;
}

.hero {
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 32px;
  border-radius: 18px;
  background: linear-gradient(135deg, #5676f6, #2f8f68);
  color: #fff;
}

.hero.compact {
  padding: 28px;
}

.app-mark {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 76px;
  height: 76px;
  border-radius: 22px;
  background: #fff;
  color: var(--green);
  font-size: 24px;
  font-weight: 900;
}

.eyebrow {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.82;
}

h1 {
  margin: 0;
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.05;
}

.lead {
  margin: 12px 0 0;
  max-width: 680px;
  font-size: 18px;
  opacity: 0.9;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.card,
.content,
.korean {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 10px 24px rgba(39, 41, 46, 0.06);
}

.card {
  display: block;
  padding: 22px;
  color: var(--text);
}

.card-title {
  display: block;
  margin-bottom: 8px;
  color: var(--primary-dark);
  font-size: 20px;
  font-weight: 800;
}

.content,
.korean {
  margin-top: 20px;
  padding: 28px;
}

h2 {
  margin: 32px 0 10px;
  font-size: 24px;
}

h2:first-child {
  margin-top: 0;
}

h3 {
  margin: 24px 0 8px;
  font-size: 18px;
}

p,
ul {
  margin-top: 0;
}

li + li {
  margin-top: 6px;
}

code {
  padding: 2px 5px;
  border-radius: 6px;
  background: #eef2ff;
  color: var(--primary-dark);
}

hr {
  margin: 32px 0;
  border: 0;
  border-top: 1px solid var(--line);
}

@media (max-width: 680px) {
  .hero {
    align-items: flex-start;
    flex-direction: column;
    padding: 26px;
  }

  .grid {
    grid-template-columns: 1fr;
  }

  .content,
  .korean {
    padding: 22px;
  }
}