/* ── Reset ── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── Base ── */
html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    'Helvetica Neue', Arial, sans-serif;
  line-height: 1.8;
  color: #222;
  background: #fff;
}

a {
  color: #1a73e8;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid #e0e0e0;
}

.header-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 18px;
  font-weight: 700;
  color: #222;
}

.logo:hover {
  text-decoration: none;
}

.cta-button {
  display: inline-block;
  padding: 8px 20px;
  background: #1a73e8;
  color: #fff;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}

.cta-button:hover {
  background: #1558b0;
  text-decoration: none;
}

/* ── Main Content ── */
.content {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 20px;
}

.content h1 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 24px;
  line-height: 1.3;
}

.content h2 {
  font-size: 22px;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 12px;
}

.content p {
  margin-bottom: 16px;
}

.content ul,
.content ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

.content li {
  margin-bottom: 8px;
}

/* ── Footer ── */
.site-footer {
  border-top: 1px solid #e0e0e0;
  padding: 24px 20px;
  text-align: center;
  font-size: 14px;
  color: #666;
}

.site-footer nav {
  margin-bottom: 12px;
}

.site-footer nav a {
  margin: 0 12px;
  color: #666;
}

.site-footer nav a:hover {
  color: #222;
}