:root {
  --accent: #F26B1D;
  --ink: #2A1D14;
  --muted: #7B6A5C;
  --ground: #FAF6F1;
  --card: #FFFFFF;
  --line: #EDE4DA;
}
@media (prefers-color-scheme: dark) {
  :root { --ink: #F3ECE6; --muted: #B4A597; --ground: #15120F; --card: #221D19; --line: #3A312A; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--ground); color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans", "Segoe UI", sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 860px; margin: 0 auto; padding: 0 20px; }
header.top { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; }
header.top .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--ink); }
header.top .brand img { width: 32px; height: 32px; }
header.top nav a { margin-left: 18px; color: var(--muted); font-size: 14px; }
.hero { text-align: center; padding: 56px 0 40px; }
.hero img { width: 128px; height: 128px; }
.hero h1 { font-size: 40px; line-height: 1.2; margin: 18px 0 10px; }
.hero p { color: var(--muted); font-size: 18px; margin: 0 auto; max-width: 560px; }
.cta { display: inline-block; margin-top: 26px; background: var(--accent); color: #fff; padding: 12px 26px; border-radius: 12px; font-weight: 600; }
.cta:hover { text-decoration: none; filter: brightness(1.05); }
.cta.soon { background: var(--line); color: var(--muted); }
.note { color: var(--muted); font-size: 13px; margin-top: 10px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; padding: 24px 0 48px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 20px 22px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.doc { padding: 24px 0 56px; }
.doc h1 { font-size: 30px; margin-bottom: 4px; }
.doc h2 { font-size: 20px; margin-top: 32px; }
.doc .updated { color: var(--muted); font-size: 14px; }
.lang { border-top: 1px solid var(--line); margin-top: 40px; padding-top: 24px; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; padding: 22px 0 40px; text-align: center; }