/* Shared styles for every page of the site. Product pages add their own bits inline. */
:root {
  --bg: #0e0c13;
  --surface: #1a1722;
  --line: rgba(255, 255, 255, 0.1);
  --fg: #f4f1ee;
  --muted: #a9a3b8;
  --accent: #ff5a47;
  --accent-hover: #ff705f;
  --ok: #7bd88f;
  --jp: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", sans-serif;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: radial-gradient(1200px 700px at 15% -10%, #2b2440 0%, var(--bg) 60%) no-repeat, var(--bg);
  color: var(--fg);
  font: 17px/1.6 -apple-system, "Segoe UI", "Helvetica Neue", Arial, var(--jp), sans-serif;
}

a { color: var(--accent); }
img { max-width: 100%; height: auto; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }

/* Top bar */
nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 0; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--fg); text-decoration: none; font-weight: 700; }
.brand img { width: 32px; height: 32px; }
.brand small { color: var(--muted); font-weight: 500; }
nav .links { display: flex; gap: 20px; font-size: 15px; }
nav .links a { color: var(--muted); text-decoration: none; }
nav .links a:hover { color: var(--fg); }

/* Buttons and labels */
.cta { display: inline-block; padding: 14px 24px; border-radius: 10px; background: var(--accent); color: #fff; font-weight: 700; text-decoration: none; }
.cta:hover { background: var(--accent-hover); }
.button { display: inline-block; padding: 9px 16px; border-radius: 8px; border: 1px solid var(--line); color: var(--fg); font-size: 15px; font-weight: 600; text-decoration: none; }
.button:hover { background: rgba(255, 255, 255, 0.06); }
.button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.button.primary:hover { background: var(--accent-hover); }
.tag { display: inline-block; padding: 2px 10px; border: 1.5px solid var(--accent); border-radius: 999px; color: var(--accent); font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; vertical-align: middle; }
.tag.muted { border-color: var(--line); color: var(--muted); }

/* Sections */
section { padding: 64px 0; border-top: 1px solid var(--line); }
section > h2 { font-size: 32px; letter-spacing: -0.5px; margin: 0 0 8px; }
section > .lead { color: var(--muted); margin: 0 0 36px; }

/* FAQ */
details { border-bottom: 1px solid var(--line); padding: 16px 0; }
details:first-of-type { border-top: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 600; }
details p { color: var(--muted); margin: 10px 0 0; }

/* Long-form pages (privacy, terms) */
.doc { max-width: 720px; padding: 24px 0 64px; }
.doc h1 { font-size: 34px; line-height: 1.2; margin: 0 0 4px; }
.doc h2 { font-size: 21px; margin: 32px 0 8px; }
.doc .updated { color: var(--muted); margin: 0 0 24px; }
.doc li { margin: 8px 0; }

/* Footer */
footer { padding: 40px 0 56px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
footer .row { display: flex; flex-wrap: wrap; gap: 8px 24px; margin-bottom: 10px; }
footer a { color: var(--muted); }
footer a:hover { color: var(--fg); }

@media (max-width: 800px) {
  nav .links { gap: 14px; }
  nav .links .optional { display: none; }
  section { padding: 48px 0; }
}