/* Sync sub-pages — iOS grouped look; dots = PDSCore CategoryPalette */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --bg: #F2F2F7; --card: #fff; --ink: #1C1C1E; --text: #1C1C1E; --text-mid: #3A3A3C; --text-dim: #6C6C70;
  --border: #E5E5EA; --blue: #0A84FF; --link: #0066CC;
  --mono: Pretendard, -apple-system, system-ui, sans-serif;
  --sans: Pretendard, -apple-system, 'Apple SD Gothic Neo', system-ui, sans-serif;
}
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--text-mid); font-family: var(--sans); line-height: 1.7; -webkit-font-smoothing: antialiased; }
.wrap {
  max-width: 720px; margin: clamp(16px, 4vw, 48px) auto; padding: clamp(24px, 5vw, 48px) clamp(20px, 5vw, 48px) 48px;
  background: var(--card); border-radius: 28px; box-shadow: 0 1px 2px rgba(0,0,0,0.04), 0 40px 80px -48px rgba(0,0,0,0.25);
}
.topnav {
  display: inline-flex; align-items: center; gap: 6px; margin-bottom: 2rem; padding: 7px 14px;
  font-size: 14px; font-weight: 600; color: var(--ink); background: var(--bg); border-radius: 999px; text-decoration: none;
}
h1 { font-size: clamp(26px, 5vw, 36px); font-weight: 700; letter-spacing: -0.035em; line-height: 1.2; color: var(--ink); margin-bottom: 0.75rem; }
h1::before {
  content: ""; display: block; width: 64px; height: 64px; margin-bottom: 1.25rem;
  background: url('/img/sync-icon.png') center / cover; border-radius: 15px;
  box-shadow: 0 10px 24px -12px rgba(10,132,255,0.5);
}
.effective {
  display: inline-block; margin-bottom: 1.75rem; padding: 4px 12px; border-radius: 999px;
  font-size: 12px; font-weight: 600; color: #0A4F9B; background: #D6E9FF; letter-spacing: 0.02em;
}
.intro { font-size: 16px; color: var(--text-mid); margin-bottom: 1rem; }
h2 {
  display: flex; align-items: center; gap: 10px;
  font-size: 20px; font-weight: 700; letter-spacing: -0.02em; color: var(--ink);
  margin: 2.75rem 0 0.9rem;
}
h2::before { content: ""; flex: none; width: 10px; height: 10px; border-radius: 50%; background: var(--dot, #0A84FF); }
h2:nth-of-type(7n+1) { --dot: #6E6E73; } h2:nth-of-type(7n+2) { --dot: #0A84FF; } h2:nth-of-type(7n+3) { --dot: #FF9F0A; }
h2:nth-of-type(7n+4) { --dot: #30D158; } h2:nth-of-type(7n+5) { --dot: #E0A526; } h2:nth-of-type(7n+6) { --dot: #BF5AF2; } h2:nth-of-type(7n) { --dot: #9A9AA0; }
h3 { font-size: 16px; font-weight: 600; color: var(--ink); margin: 1.5rem 0 0.4rem; }
p { font-size: 15px; margin-bottom: 0.85rem; }
ul, ol { margin: 0.5rem 0 1rem 1.3rem; }
li { font-size: 15px; margin-bottom: 0.45rem; }
strong { color: var(--ink); font-weight: 600; }
a.inline { color: var(--link); text-decoration: none; }
a.inline:hover { text-decoration: underline; }
table { width: 100%; border-collapse: separate; border-spacing: 0; margin: 1rem 0 1.5rem; font-size: 14px; background: var(--bg); border-radius: 14px; overflow: hidden; }
th, td { padding: 0.7rem 0.9rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--border); }
tr:last-child td { border-bottom: 0; }
th { font-size: 12px; font-weight: 600; color: var(--text-dim); }
td { color: var(--text-mid); }
.contact, .contact-box { margin: 1.5rem 0; padding: 1rem 1.25rem; background: var(--bg); border-radius: 16px; }
.contact .label { font-size: 12px; font-weight: 600; color: var(--text-dim); margin-bottom: 0.2rem; }
.contact .value { font-size: 17px; font-weight: 600; }
.contact .value a, .contact-box a { color: var(--link); text-decoration: none; }
.foot, footer { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--border); font-size: 13px; color: var(--text-dim); }
.foot a, footer a { color: var(--link); text-decoration: none; }
a:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 4px; }
@media (max-width: 640px) {
  .wrap { margin: 0; border-radius: 0; box-shadow: none; }
  table, th, td { font-size: 13px; } th, td { padding: 0.55rem 0.6rem; }
}