:root {
  color-scheme: light;
  --bg: #eef7ff;
  --card: #ffffff;
  --text: #17212b;
  --muted: #5c6b7a;
  --blue: #1677ff;
  --green: #20b45b;
  --line: #d8e6f5;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(22, 119, 255, 0.18), transparent 34rem),
    linear-gradient(180deg, #f8fcff 0%, var(--bg) 100%);
}

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

.narrow {
  width: min(760px, calc(100% - 32px));
}

.hero {
  display: grid;
  align-content: center;
  min-height: calc(100vh - 112px);
}

.app-mark {
  display: grid;
  place-items: center;
  width: 76px;
  height: 76px;
  margin-bottom: 24px;
  border-radius: 22px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--blue), var(--green));
  font-size: 44px;
  font-weight: 800;
  box-shadow: 0 16px 32px rgba(22, 119, 255, 0.25);
}

.eyebrow,
.updated {
  color: var(--blue);
  font-weight: 700;
}

h1 {
  margin: 0 0 16px;
  font-size: clamp(2.2rem, 7vw, 4.6rem);
  line-height: 1.05;
  letter-spacing: 0;
}

.narrow h1 {
  font-size: clamp(2rem, 6vw, 3.4rem);
}

h2 {
  margin: 0 0 14px;
  font-size: 1.35rem;
}

h3 {
  margin: 20px 0 8px;
  font-size: 1.05rem;
}

p,
li {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
}

.lead {
  max-width: 680px;
  margin: 0 0 28px;
  font-size: 1.1rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.actions a,
.back {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 8px;
  color: #ffffff;
  background: var(--blue);
  font-weight: 700;
  text-decoration: none;
}

.actions a + a {
  color: var(--blue);
  background: #ffffff;
  border: 1px solid var(--line);
}

.back {
  margin-bottom: 28px;
  color: var(--blue);
  background: #ffffff;
  border: 1px solid var(--line);
}

.card {
  margin: 18px 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  box-shadow: 0 14px 34px rgba(60, 104, 148, 0.10);
}

ul {
  margin: 0;
  padding-left: 1.2rem;
}