:root { color-scheme: light dark; --bg: #f4f6f9; --surface: #ffffff; --ink: #0f1419; --muted: #6b7785; --line: #e3e8ee; --brand: #2f7fe8; }
@media (prefers-color-scheme: dark) { :root { --bg: #0e1621; --surface: #17212b; --ink: #e8eef5; --muted: #8796a8; --line: #24313f; --brand: #4ea0f7; } }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.7 system-ui, -apple-system, "Malgun Gothic", sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 32px 16px 56px; }
header { display: flex; align-items: center; gap: 14px; margin-bottom: 24px; }
header img { width: 56px; height: 56px; border-radius: 14px; }
h1 { margin: 0; font-size: 22px; line-height: 1.35; }
header p { margin: 2px 0 0; }
section { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 20px 22px; margin-bottom: 14px; }
h2 { margin: 0 0 10px; font-size: 17px; }
h3, .gap { margin: 16px 0 6px; }
h3 { font-size: 15px; }
ol, ul { margin: 0; padding-left: 22px; }
li + li { margin-top: 6px; }
p { margin: 0 0 8px; }
section > :last-child { margin-bottom: 0; }
a { color: var(--brand); overflow-wrap: anywhere; }
.muted { color: var(--muted); font-size: 14px; }
table { width: 100%; margin-bottom: 8px; border-collapse: collapse; font-size: 14px; line-height: 1.6; }
th, td { border-top: 1px solid var(--line); padding: 8px 10px 8px 0; vertical-align: top; }
th { color: var(--muted); font-weight: 600; text-align: left; white-space: nowrap; }