:root {
  --navy: #121a5e;
  --navy-deep: #0b0f3a;
  --cyan: #5ee7ff;
  --pink: #ff2d95;
  --ink: #1b1e33;
  --muted: #5a5f7a;
  --paper: #f7f7fb;
  --rule: #e2e3ee;
  --link: #3a3fc4;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--link); }
header {
  background: linear-gradient(180deg, var(--navy) 0%, #1c2977 55%, var(--navy-deep) 100%);
  color: #fff;
  padding: 20px max(20px, env(safe-area-inset-left)) 20px max(20px, env(safe-area-inset-right));
}
.bar { max-width: 760px; margin: 0 auto; display: flex; align-items: center; gap: 12px; }
.bar img { width: 40px; height: 40px; border-radius: 10px; }
.bar a { color: #fff; text-decoration: none; font-weight: 700; font-size: 20px; letter-spacing: 0.04em; }
main {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px max(20px, env(safe-area-inset-left)) 48px max(20px, env(safe-area-inset-right));
}
h1 { font-size: 30px; line-height: 1.25; margin: 0 0 8px; text-wrap: balance; }
h2 { font-size: 21px; margin: 36px 0 8px; }
h3 { font-size: 17px; margin: 20px 0 4px; }
.updated { color: var(--muted); font-size: 15px; margin: 0 0 24px; }
.note {
  background: #fff;
  border: 1px solid var(--rule);
  border-left: 4px solid var(--pink);
  border-radius: 8px;
  padding: 12px 16px;
}
ol, ul { padding-left: 22px; }
li { margin: 4px 0; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
.table { overflow-x: auto; }
th, td { text-align: left; vertical-align: top; padding: 8px 10px; border-bottom: 1px solid var(--rule); }
th { background: #eef0f8; }
footer {
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 14px;
  padding: 20px;
  text-align: center;
}
footer a { color: var(--muted); margin: 0 8px; }
/* Home */
.hero {
  background: linear-gradient(180deg, var(--navy) 0%, #1c2977 55%, var(--navy-deep) 100%);
  color: #fff;
  text-align: center;
  padding: 56px 20px 64px;
}
.hero img { width: 128px; height: 128px; border-radius: 28px; box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35); }
.hero h1 { font-size: 40px; margin: 24px 0 4px; letter-spacing: 0.06em; }
.hero .tagline { color: var(--cyan); letter-spacing: 0.3em; font-size: 14px; font-weight: 600; margin: 0 0 20px; }
.hero p.lead { max-width: 560px; margin: 0 auto; font-size: 19px; color: #e6e8ff; }
.features { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.features div { background: #fff; border: 1px solid var(--rule); border-radius: 12px; padding: 16px; }
.features h3 { margin-top: 0; }