:root {
  --ink: #1d1a17;
  --muted: #6b625a;
  --paper: #ffffff;
  --bg: #fff6ee;
  --line: #f1dfcf;
  --orange: #f25c08;
  --orange-soft: #ff9a1f;
  --link: #d9520a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f4eee8;
    --muted: #b3a89e;
    --paper: #221c18;
    --bg: #15110e;
    --line: #3a2f27;
    --link: #ff9a4a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.75 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
}
a { color: var(--link); }
.wrap { max-width: 820px; margin: 0 auto; padding: 20px 16px 48px; }
header.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; position: sticky; top: 0; z-index: 50; margin: -20px calc(50% - 50vw) 0; padding: 14px max(16px, calc(50vw - 50% + 16px)); background: color-mix(in srgb, var(--bg) 72%, transparent); -webkit-backdrop-filter: saturate(1.6) blur(18px); backdrop-filter: saturate(1.6) blur(18px); border-bottom: 1px solid transparent; transition: border-color .3s ease, background-color .3s ease; }
header.top.scrolled { border-bottom-color: var(--line); }
nav a { transition: color .2s ease; }
nav a:hover { color: var(--orange); }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 18px; }
.brand img { width: 36px; height: 36px; border-radius: 9px; }
nav a { margin-left: 16px; color: var(--ink); text-decoration: none; font-weight: 600; font-size: 15px; }
nav a:first-child { margin-left: 0; }
nav a[aria-current="page"] { color: var(--orange); }

.hero { text-align: center; padding: 48px 0 28px; }
.hero img { width: 132px; height: 132px; border-radius: 30px; box-shadow: 0 18px 40px rgba(242, 92, 8, .28); }
.hero h1 { font-size: 40px; line-height: 1.2; margin: 22px 0 8px; letter-spacing: 1px; }
.hero p.lead { font-size: 19px; color: var(--muted); margin: 0 auto; max-width: 560px; }
.badges { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.badge { border: 1px solid var(--line); background: var(--paper); border-radius: 999px; padding: 4px 14px; font-size: 14px; color: var(--muted); }
.soon { margin-top: 22px; display: inline-block; background: linear-gradient(180deg, var(--orange-soft), var(--orange)); color: #fff; border-radius: 999px; padding: 10px 26px; font-weight: 700; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; margin-top: 28px; }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: 18px; padding: 20px 22px; }
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .icon { font-size: 26px; line-height: 1; margin-bottom: 10px; }

article.card { padding: 26px 28px; margin-top: 22px; }
article h1 { font-size: 30px; margin: 0 0 4px; }
article h2 { font-size: 19px; margin: 26px 0 6px; color: var(--orange); }
article ul { padding-left: 20px; }
.muted { color: var(--muted); }
footer { margin-top: 32px; text-align: center; font-size: 13px; color: var(--muted); }
footer a { color: var(--muted); }
@media (max-width: 520px) {
  .hero h1 { font-size: 32px; }
  nav a { margin-left: 12px; }
  article.card { padding: 20px 18px; }
}