:root {
  --paper: #f4f6f3; --sheet: #ffffff; --ink: #18231e; --ink-2: #4b5852; --ink-3: #7f8b85; --line: #d8dfda;
  --teal: #0f6f6a; --teal-wash: #dcebe8; --mark: #ffe56e;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --paper: #121a17; --sheet: #1a2420; --ink: #e9ede9; --ink-2: #b7c0ba; --ink-3: #7f8a84; --line: #2c3632;
          --teal: #45b3a9; --teal-wash: #173431; --mark: #b89b1c; color-scheme: dark; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", system-ui, sans-serif; line-height: 1.6; font-size: 17px; }
a { color: var(--teal); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 22px; }
header.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 22px 0; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--ink); text-decoration: none; }
.brand svg { width: 28px; height: 28px; }
.top nav a { color: var(--ink-2); text-decoration: none; font-size: .95rem; margin-left: 16px; }
.top nav a:first-child { margin-left: 0; }
.top nav a[aria-current] { color: var(--teal); font-weight: 600; }
main { padding: 18px 0 40px; }
h1 { font-size: clamp(1.9rem, 4.5vw, 2.6rem); line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 8px; }
.effective { color: var(--ink-3); margin: 0 0 26px; }
.lead { font-size: 1.1rem; color: var(--ink-2); }
h2 { font-size: 1.25rem; letter-spacing: -0.01em; margin: 34px 0 10px; padding-top: 18px; border-top: 1px solid var(--line); }
p, li { color: var(--ink-2); }
ul { padding-left: 1.2em; }
li { margin: 6px 0; }
b, strong { color: var(--ink); }
.note { background: var(--sheet); border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; }
footer { padding: 30px 0 50px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; color: var(--ink-2); font-size: .95rem; }
footer address { font-style: normal; }