:root {
  --ink-deep: #1a1238;
  --ink-mid: #3a207a;
  --violet: #6c33bd;
  --coral: #ff5e5b;
  --amber: #ffc145;
  --mint: #7ed9a3;
  --text: #ffffff;
  --text-2: rgba(255, 255, 255, 0.78);
  --text-3: rgba(255, 255, 255, 0.62);
  --panel: rgba(255, 255, 255, 0.09);
  --hairline: rgba(255, 255, 255, 0.14);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 20px 72px;
  background: linear-gradient(150deg, var(--ink-deep) 0%, var(--ink-mid) 55%, var(--violet) 100%);
  background-attachment: fixed;
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 680px; margin: 0 auto; }

header { padding: 56px 0 34px; }

.mark {
  display: inline-flex; align-items: center; gap: 12px;
  text-decoration: none; color: var(--text);
}
.mark img { width: 46px; height: 46px; border-radius: 11px; }
.mark b { font-size: 21px; font-weight: 800; letter-spacing: -0.01em; }
.mark span { display: block; font-size: 12px; color: var(--text-3); font-weight: 500; }

h1 { font-size: 30px; line-height: 1.2; margin: 30px 0 6px; letter-spacing: -0.02em; }
h2 { font-size: 18px; margin: 34px 0 10px; letter-spacing: -0.01em; }
h3 { font-size: 15px; margin: 22px 0 6px; color: var(--amber); }
p, li { color: var(--text-2); }
.lede { font-size: 17px; color: var(--text-2); }
.meta { color: var(--text-3); font-size: 13px; margin-top: 0; }

.panel {
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: 18px;
  padding: 20px 22px;
  margin: 22px 0;
}
.panel.good { background: rgba(126, 217, 163, 0.13); border-color: rgba(126, 217, 163, 0.3); }

ul { padding-left: 20px; }
li { margin: 7px 0; }

a { color: var(--mint); }
a:hover { color: var(--text); }

code {
  background: rgba(0, 0, 0, 0.28);
  padding: 2px 6px; border-radius: 5px;
  font-size: 0.9em;
}

footer {
  margin-top: 54px; padding-top: 22px;
  border-top: 1px solid var(--hairline);
  color: var(--text-3); font-size: 13px;
}
footer a { color: var(--text-3); text-decoration: underline; }
nav { margin-top: 8px; display: flex; gap: 16px; flex-wrap: wrap; }

@media (max-width: 520px) {
  h1 { font-size: 25px; }
  header { padding: 36px 0 22px; }
}