:root { --ink: #2b1a12; --muted: #6b625c; --line: #ece5de; --bg: #fffdfb; --accent: #ff7a1a; }
@media (prefers-color-scheme: dark) { :root { --ink: #f4ece6; --muted: #b3a79e; --line: #3a2f29; --bg: #1a1411; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", sans-serif; }
a { color: inherit; text-decoration-color: var(--accent); text-underline-offset: 3px; }
main, header, footer { width: min(720px, 100% - 40px); margin-inline: auto; }
header { display: flex; align-items: center; justify-content: space-between; padding-block: 22px; }
header .brand { display: flex; align-items: center; gap: 10px; font-weight: 650; text-decoration: none; }
header .brand img { width: 30px; height: 30px; }
header nav { display: flex; gap: 18px; font-size: 14px; color: var(--muted); }
header nav a { text-decoration: none; }
.hero { padding-block: 56px 36px; text-align: center; }
.hero img { width: 132px; height: 132px; border-radius: 30px; box-shadow: 0 10px 30px rgb(0 0 0 / .12); }
h1 { font-size: clamp(30px, 6vw, 44px); line-height: 1.15; margin: 26px 0 12px; letter-spacing: -.02em; }
.lead { font-size: 19px; color: var(--muted); max-width: 34em; margin: 0 auto 28px; }
.btn { display: inline-block; padding: 12px 24px; border-radius: 12px; font-weight: 600; background: var(--accent); color: #fff; text-decoration: none; }
.btn[aria-disabled="true"] { background: var(--line); color: var(--muted); cursor: default; }
.note { margin-top: 12px; font-size: 13px; color: var(--muted); }
h2 { font-size: 22px; margin: 44px 0 12px; }
ul.features { padding: 0; list-style: none; display: grid; gap: 12px; }
ul.features li { padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; }
ul.features strong { display: block; }
.doc h1 { text-align: left; font-size: 32px; margin-top: 24px; }
.doc p, .doc li { color: var(--ink); }
.doc .meta { color: var(--muted); font-size: 14px; }
details { border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 600; }
footer { padding-block: 40px; color: var(--muted); font-size: 13px; border-top: 1px solid var(--line); margin-top: 56px; }
footer p { margin: 4px 0; }