:root {
  --ink: #20242b;
  --red: #f1453b;
  --muted: #6b7280;
  --grid: #e9ebee;
  --border: #e4e6ea;
  --soft: #f7f8f9;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Inter", system-ui, sans-serif;
  background: #ffffff;
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  line-height: 1.65;
}
.bg-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, var(--grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
  -webkit-mask-image: radial-gradient(120% 40% at 50% 0%, #000 0%, transparent 70%);
          mask-image: radial-gradient(120% 40% at 50% 0%, #000 0%, transparent 70%);
}
.wrap { position: relative; z-index: 1; max-width: 760px; margin: 0 auto; padding: 40px 24px 90px; }
.topbar { display: flex; align-items: center; justify-content: space-between; padding: 8px 0 34px; }
.topbar a.brand { display: inline-flex; align-items: center; text-decoration: none; }
.topbar img { width: 132px; height: auto; }
.topbar nav a { color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 600; margin-left: 20px; }
.topbar nav a:hover { color: var(--red); }
h1 { font-size: clamp(1.7rem, 3.4vw, 2.3rem); font-weight: 800; letter-spacing: -0.02em; line-height: 1.15; }
.updated { color: var(--muted); font-size: 14px; margin-top: 10px; margin-bottom: 30px; }
h2 { font-size: 1.18rem; font-weight: 700; letter-spacing: -0.01em; margin: 34px 0 10px; }
h3 { font-size: 1rem; font-weight: 700; margin: 22px 0 6px; }
p, li { color: #33383f; font-size: 15.5px; }
p { margin: 10px 0; }
ul, ol { margin: 8px 0 8px 22px; }
li { margin: 5px 0; }
a { color: var(--red); }
.card { background: var(--soft); border: 1px solid var(--border); border-radius: 14px; padding: 18px 20px; margin: 18px 0; }
.card p, .card li { font-size: 15px; }
strong { color: var(--ink); }
.foot { border-top: 1px solid var(--border); margin-top: 50px; padding-top: 22px; display: flex; flex-wrap: wrap; gap: 6px 18px; align-items: center; justify-content: space-between; }
.foot .cc { color: var(--muted); font-size: 13px; }
.foot nav a { color: var(--muted); text-decoration: none; font-size: 13px; font-weight: 600; margin-left: 16px; }
.foot nav a:hover { color: var(--red); }
@media (max-width: 560px) {
  .topbar nav a { margin-left: 14px; font-size: 13px; }
  .foot { flex-direction: column; align-items: flex-start; }
  .foot nav a { margin-left: 0; margin-right: 16px; }
}