:root {
  color-scheme: dark;
  --bg: #07080A; --panel: #0F1114; --panel-2: #14161A;
  --line: rgba(255,255,255,.07); --line-2: rgba(255,255,255,.11);
  --text: #EDEEF0; --text-2: #A3A7AE; --text-3: #7C8088;
  --accent: #E5197E; --accent-hi: #FF4FA3;
  --sans: "Geist", "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "Geist Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text); font-family: var(--sans); font-size: 17px; line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  background-image: radial-gradient(60% 36% at 50% 0%, rgba(255,46,147,.14), transparent 70%); background-repeat: no-repeat;
}
a { color: inherit; }
:focus-visible { outline: 2px solid var(--accent-hi); outline-offset: 3px; border-radius: 6px; }
.top, main, .foot-in { max-width: 820px; margin: 0 auto; padding-left: 16px; padding-right: 16px; }
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 20px; padding-bottom: 20px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: -.02em; text-decoration: none; }
.brand img { border-radius: 8px; }
.top nav { display: flex; align-items: center; gap: 4px; font-size: 14px; }
.top nav a { padding: 7px 12px; border-radius: 8px; color: var(--text-2); text-decoration: none; }
.top nav a:hover, .top nav a[aria-current] { color: var(--text); background: rgba(255,255,255,.05); }
.top nav a.buy { background: #da1778; color: #fff; margin-left: 6px; }
main { padding-top: 8px; padding-bottom: 72px; }
.crumbs { display: flex; gap: 8px; flex-wrap: wrap; font-size: 14px; color: var(--text-3); margin: 8px 0 28px; }
.crumbs a { color: var(--text-2); text-decoration: none; }
.crumbs a:hover { color: var(--text); }
h1 { font-size: clamp(28px, 5vw, 42px); line-height: 1.15; letter-spacing: -.03em; margin: 0 0 14px; font-weight: 650; }
h2 { font-size: clamp(21px, 3vw, 26px); line-height: 1.25; letter-spacing: -.02em; margin: 44px 0 12px; font-weight: 600; }
h3 { font-size: 18px; margin: 28px 0 8px; font-weight: 600; }
.lede { font-size: 19px; color: var(--text-2); margin: 0 0 8px; }
.meta { color: var(--text-3); font-size: 14px; }
p, li { color: #D3D5D9; }
ul, ol { padding-left: 22px; }
li { margin: 6px 0; }
strong { color: var(--text); font-weight: 600; }
.formula { font-family: var(--mono); font-size: 18px; background: var(--panel); border: 1px solid var(--line-2); border-left: 3px solid var(--accent);
  border-radius: 10px; padding: 14px 18px; margin: 18px 0; overflow-x: auto; color: var(--text); }
.callout { background: var(--panel); border: 1px solid var(--line-2); border-radius: 12px; padding: 16px 18px; margin: 22px 0; }
.callout p { margin: 0; }
table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 16px; display: block; overflow-x: auto; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line-2); white-space: nowrap; }
th { color: var(--text-2); font-weight: 500; font-size: 14px; }
td:first-child, th:first-child { padding-left: 0; }
.cta { margin: 48px 0 12px; padding: clamp(20px, 4vw, 30px); border-radius: 16px; border: 1px solid rgba(255,79,163,.35);
  background: linear-gradient(180deg, rgba(229,25,126,.12), rgba(229,25,126,.04)); }
.cta h2 { margin: 0 0 8px; font-size: 22px; }
.cta p { margin: 0 0 16px; }
.btn { display: inline-flex; align-items: center; height: 44px; padding: 0 20px; border-radius: 10px; background: #da1778; color: #fff;
  font-weight: 500; text-decoration: none; }
.btn:hover { background: #e5197e; }
.related { margin-top: 40px; }
.related h2 { font-size: 20px; margin-top: 0; }
.cards { list-style: none; padding: 0; display: grid; gap: 14px; margin: 28px 0 0; }
.cards a { display: block; padding: 20px 22px; border: 1px solid var(--line-2); border-radius: 14px; background: var(--panel); text-decoration: none; transition: border-color .2s, background .2s; }
.cards a:hover { border-color: rgba(255,79,163,.45); background: var(--panel-2); }
.cards h2 { font-size: 20px; margin: 0 0 6px; }
.cards p { margin: 0 0 8px; color: var(--text-2); font-size: 16px; }
footer { border-top: 1px solid var(--line); }
.foot-in { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; padding-top: 22px; padding-bottom: 28px; font-size: 14px; color: var(--text-3); }
.foot-in nav { display: flex; gap: 16px; flex-wrap: wrap; }
.foot-in a { text-decoration: none; }
.foot-in a:hover { color: var(--text); }