:root {
  --bg: #F6F5FB; --card: #FFFFFF; --ink: #0B0B12; --muted: #5B5870; --line: #E4E2EE;
  --purple: #6D28D9; --purple-soft: #EFE7FD; --blue: #2563EB; --blue-soft: #E5EDFF;
  --pink: #DB2777; --pink-soft: #FDE6EF; --pink-ink: #831843; --on-accent: #FFFFFF;
  --hero: linear-gradient(135deg, #2563EB 0%, #6D28D9 55%, #DB2777 100%);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0B0B12; --card: #15121F; --ink: #F2F0F8; --muted: #A9A3C2; --line: #2A2540;
    --purple: #A78BFA; --purple-soft: #231C3D; --blue: #93C5FD; --blue-soft: #16213D;
    --pink: #F472B6; --pink-soft: #2A1424; --pink-ink: #F9A8D4;
  }
}
:root[data-theme="dark"] {
  --bg: #0B0B12; --card: #15121F; --ink: #F2F0F8; --muted: #A9A3C2; --line: #2A2540;
  --purple: #A78BFA; --purple-soft: #231C3D; --blue: #93C5FD; --blue-soft: #16213D;
  --pink: #F472B6; --pink-soft: #2A1424; --pink-ink: #F9A8D4;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 "DM Sans", system-ui, sans-serif; overflow-x: hidden; }
a { color: var(--purple); font-weight: 700; }
h1, h2, h3 { font-family: "Sora", sans-serif; line-height: 1.2; margin: 0; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 720px; }

/* Nav */
nav { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 18px 0; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand img { width: 36px; height: 36px; border-radius: 10px; }
.brand b { font: 700 19px "Sora", sans-serif; }
.links { display: flex; gap: 18px; flex-wrap: wrap; }
.links a { color: var(--muted); font-weight: 600; text-decoration: none; font-size: 15px; }
.links a:hover, .links a[aria-current] { color: var(--ink); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 52px; padding: 0 22px;
  border-radius: 16px; border: 0; font: 700 16px "DM Sans", sans-serif; cursor: pointer; text-decoration: none; }
.btn-dark { background: var(--ink); color: var(--bg); }
.btn-pink { background: var(--pink); color: var(--on-accent); }
.btn-ghost { background: transparent; color: var(--ink); border: 1.5px solid var(--line); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn:focus-visible, a:focus-visible, input:focus-visible { outline: 3px solid var(--purple); outline-offset: 2px; }

/* Cards & text */
.card { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 22px; }
.muted { color: var(--muted); }
.pill { display: inline-block; background: var(--purple-soft); color: var(--purple); font-weight: 700; font-size: 13px; padding: 3px 11px; border-radius: 999px; }
.page-head { padding: 28px 0 22px; }
.page-head h1 { font-size: clamp(28px, 6vw, 40px); margin-bottom: 10px; }
.stack > * + * { margin-top: 14px; }
.card h2 { font-size: 20px; margin-bottom: 10px; }
.card ul, .card ol { margin: 0; padding-left: 22px; }
.card li + li { margin-top: 6px; }
.note { background: var(--pink-soft); border-color: transparent; }
.note, .note h2 { color: var(--pink-ink); }

footer { border-top: 1px solid var(--line); margin-top: 56px; padding: 26px 0 40px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
footer a { color: var(--muted); font-weight: 600; }

@media (max-width: 560px) {
  .links { gap: 12px; }
  .links a { font-size: 14px; }
  .brand b { display: none; }
}