:root {
  --bg: #f5f7fa;
  --card: #ffffff;
  --text: #1b1f24;
  --muted: #5d6b7a;
  --primary: #0b6bcb;
  --border: #dce3ea;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #eef5ff 0%, var(--bg) 35%);
}

.container {
  width: min(960px, 92%);
  margin: 0 auto;
}

.hero {
  padding: 42px 0 28px;
}

.badge {
  margin: 0 0 8px;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.02em;
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(1.5rem, 4vw, 2.2rem);
}

.meta {
  margin: 0;
  color: var(--muted);
}

.content {
  display: grid;
  gap: 16px;
  padding-bottom: 36px;
}

section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
}

h2 {
  margin: 0 0 12px;
  font-size: 1.15rem;
}

h3 {
  margin: 14px 0 8px;
  font-size: 1rem;
}

p, li {
  line-height: 1.6;
}

ul {
  margin: 8px 0 0;
  padding-left: 20px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}

th, td {
  border: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
  padding: 10px;
  font-size: 0.95rem;
}

th {
  background: #f2f7fd;
}

code {
  font-family: Consolas, Monaco, monospace;
  font-size: 0.9em;
  background: #f3f6f8;
  border: 1px solid #e2e9f0;
  padding: 1px 5px;
  border-radius: 5px;
}

.note {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.92rem;
}

footer {
  border-top: 1px solid var(--border);
  background: #fff;
  color: var(--muted);
}

footer p {
  margin: 0;
  padding: 16px 0 22px;
  text-align: center;
}

@media (max-width: 720px) {
  th, td {
    font-size: 0.9rem;
  }
}