:root { --ink: #111113; --muted: #6e6e73; --faint: #f2f2f4; --line: #e5e5ea; --bg: #ffffff; }
@media (prefers-color-scheme: dark) {
  :root { --ink: #f5f5f7; --muted: #98989d; --faint: #1c1c1e; --line: #2c2c2e; --bg: #000000; }
  .mark { filter: invert(1) hue-rotate(180deg); }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif; }
main, header, footer { max-width: 720px; margin: 0 auto; padding: 0 20px; }
header { display: flex; align-items: center; gap: 10px; padding-top: 24px; }
header a { color: inherit; text-decoration: none; font-weight: 700; font-size: 20px; display: flex; align-items: center; gap: 10px; }
.mark { width: 36px; height: 36px; }
h1, h2 { font-family: "New York", "Iowan Old Style", Georgia, serif; letter-spacing: -0.01em; line-height: 1.15; }
h1 { font-size: clamp(40px, 8vw, 64px); margin: 64px 0 16px; }
h2 { font-size: 28px; margin: 56px 0 12px; }
h3 { font-size: 18px; margin: 28px 0 4px; }
p, li { color: var(--muted); }
strong { color: var(--ink); }
.lede { font-size: 21px; color: var(--muted); max-width: 560px; }
.cta { display: inline-block; margin: 28px 0 8px; padding: 14px 26px; border-radius: 999px; background: var(--ink); color: var(--bg); font-weight: 600; text-decoration: none; }
.note { font-size: 14px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; margin-top: 20px; }
.card { background: var(--faint); border-radius: 18px; padding: 18px 20px; }
.card h3 { margin-top: 0; color: var(--ink); }
.card p { margin: 0; font-size: 15px; }
.pro { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: 0.12em; color: #fff; background: #000; border-radius: 999px; padding: 3px 8px; vertical-align: middle; box-shadow: 0 0 0 0.5px rgba(255,255,255,0.2); }
details { border-top: 1px solid var(--line); padding: 14px 0; }
details:last-of-type { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 600; color: var(--ink); }
details p { margin: 8px 0 0; }
a { color: var(--ink); }
footer { margin-top: 72px; padding-bottom: 40px; border-top: 1px solid var(--line); padding-top: 20px; font-size: 14px; color: var(--muted); display: flex; gap: 18px; flex-wrap: wrap; }
footer a { color: var(--muted); }