:root {
  --navy: #011853;
  --red: #de0216;
  --yellow: #fdb204;
  --muted: #5f6984;
  --soft: #f5f7fb;
  --line: #e6eaf2;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--soft);
  color: var(--navy);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: inherit; text-decoration: none; }

.shell { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }

header { border-bottom: 1px solid var(--line); background: #fff; }

.header-inner {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.header-inner img { display: block; width: 178px; }
.header-inner > a:last-child { font-size: 14px; font-weight: 800; }

.content { width: min(860px, calc(100% - 40px)); margin: 0 auto; padding: 72px 0 90px; }

article {
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: clamp(28px, 6vw, 64px);
  background: #fff;
  box-shadow: 0 18px 50px rgba(1, 24, 83, 0.08);
}

h1, h2 { margin: 0; font-family: Montserrat, Inter, Arial, sans-serif; }
h1 { margin-bottom: 14px; font-size: clamp(38px, 6vw, 58px); letter-spacing: -0.045em; line-height: 1.02; }
.updated { margin: 0 0 40px; color: var(--muted); font-size: 14px; }
section + section { margin-top: 30px; }
h2 { margin-bottom: 10px; font-size: 22px; letter-spacing: -0.025em; }
p { color: #4f5d79; line-height: 1.75; }
article a { color: var(--red); font-weight: 750; text-decoration: underline; text-underline-offset: 2px; }
.scope-note { margin-top: 36px; border-left: 4px solid var(--yellow); border-radius: 8px; padding: 16px 18px; background: #fff9e9; color: var(--navy); }

@media (max-width: 560px) {
  .shell { width: min(100% - 28px, 500px); }
  .header-inner { min-height: 68px; }
  .header-inner img { width: 156px; }
  .content { width: min(100% - 28px, 860px); padding: 36px 0 60px; }
  article { border-radius: 18px; padding: 28px 22px; }
}