:root {
  --bg: #f6f8fb;
  --bg-2: #eef2f6;
  --surface: #ffffff;
  --text: #16202a;
  --muted: #5f6b77;
  --line: #e5e7eb;
  --accent: #1f5f78;
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.06);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, var(--bg), var(--bg-2));
  line-height: 1.65;
}

.container {
  width: min(920px, calc(100% - 24px));
  margin: 0 auto;
  padding: 24px 0 56px;
}

.hero,
.content-card,
.list-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.hero {
  padding: 24px;
  margin-bottom: 16px;
}

.eyebrow {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  background: #eef5f8;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
}

h1 {
  margin: 0;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.1;
}

h2 {
  margin: 0 0 10px;
  font-size: 22px;
}

h3 {
  margin: 18px 0 8px;
  font-size: 17px;
}

.lead,
.meta,
.content-card p,
.content-card li,
.list-card p {
  color: var(--muted);
}

.lead {
  margin: 14px 0 0;
  font-size: 16px;
}

.meta {
  margin: 12px 0 0;
  font-size: 14px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

.content-card,
.list-card {
  padding: 22px;
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.lang-link {
  display: block;
  padding: 16px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: #fafbfc;
  color: inherit;
  text-decoration: none;
}

.lang-link strong {
  display: block;
  font-size: 16px;
  margin-bottom: 4px;
}

.lang-link span {
  color: var(--muted);
  font-size: 14px;
}

.lang-link:hover {
  border-color: #d8dee6;
  background: #f4f7fa;
}

.app-name {
  margin-bottom: 10px;
  color: var(--accent);
  font-weight: 700;
  font-size: 14px;
}

ul {
  margin: 0;
  padding-left: 20px;
}

a.inline {
  color: var(--accent);
  text-decoration: none;
}

a.inline:hover {
  text-decoration: underline;
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 16px, 920px);
    padding-top: 16px;
  }

  .hero,
  .content-card,
  .list-card {
    border-radius: 20px;
    padding: 18px;
  }
}