:root {
  color-scheme: light dark;
  --bg: #fff3f8;
  --bg-soft: #ffe1ec;
  --card: #ffffff;
  --ink: #2b2330;
  --ink-soft: #7a6280;
  --accent: #d1487f;
  --accent-ink: #ffffff;
  --line: #f4b6d2;
  --shadow: 0 10px 30px rgba(209, 72, 127, 0.12);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1d1722;
    --bg-soft: #2a2030;
    --card: #2a2030;
    --ink: #f6eaf1;
    --ink-soft: #c2a9c4;
    --accent: #ff8fbd;
    --accent-ink: #2b1020;
    --line: #4a3550;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans TC", "PingFang TC", sans-serif;
}
a { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
code { font-size: 0.92em; }

/* Language switch: html[data-lang] decides which block is visible. */
html[data-lang="en"] [lang="zh-Hant"]:not(html),
html[data-lang="zh"] [lang="en"]:not(html) { display: none !important; }

.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 760px; }

/* Header */
.top {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.top .wrap { display: flex; align-items: center; gap: 12px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 700; font-size: 18px; }
.brand img { width: 34px; height: 34px; border-radius: 9px; }
.nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.nav a { color: var(--ink-soft); text-decoration: none; padding: 6px 10px; border-radius: 999px; font-size: 15px; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--accent); background: var(--bg-soft); }
.lang-btn {
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
  border-radius: 999px; padding: 5px 12px; font: inherit; font-size: 14px; cursor: pointer;
}
@media (max-width: 560px) {
  .nav .hide-sm { display: none; }
  .brand span { display: none; }
}

/* Hero */
.hero { padding-block: 56px 32px; text-align: center; }
.hero .icon { width: 128px; height: 128px; border-radius: 28px; margin: 0 auto 20px; box-shadow: var(--shadow); }
.hero h1 { font-size: clamp(34px, 7vw, 52px); line-height: 1.1; margin: 0 0 12px; }
.hero p.lead { font-size: clamp(17px, 3.6vw, 20px); color: var(--ink-soft); max-width: 620px; margin: 0 auto 28px; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--accent); color: var(--accent-ink);
  text-decoration: none; font-weight: 700; font-size: 17px;
  padding: 14px 26px; border-radius: 999px; box-shadow: var(--shadow);
}
.btn:hover { filter: brightness(1.05); }
.btn svg { width: 22px; height: 22px; }
.small { font-size: 14px; color: var(--ink-soft); }

/* Screenshots */
.shots {
  display: flex; gap: 16px; overflow-x: auto; scroll-snap-type: x mandatory;
  padding: 8px 16px 20px; margin: 16px auto 0; max-width: 1100px;
}
.shots img {
  flex: 0 0 auto; width: 220px; border-radius: 22px; scroll-snap-align: center;
  box-shadow: var(--shadow); border: 1px solid var(--line);
}

/* Sections */
section { padding-block: 32px; }
h2 { font-size: 26px; margin: 0 0 16px; text-align: center; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 20px;
  padding: 20px; box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--ink-soft); }
.card .emoji { font-size: 28px; line-height: 1; margin-bottom: 10px; }

.mascot-row { display: flex; align-items: center; gap: 20px; justify-content: center; flex-wrap: wrap; text-align: left; }
.mascot-row img { width: 120px; height: 120px; border-radius: 50%; background: #fff; }
.mascot-row div { max-width: 520px; }

/* Document pages (privacy, terms, support) */
.doc { padding-block: 32px 48px; }
.doc h1 { font-size: clamp(28px, 6vw, 36px); line-height: 1.2; margin: 0 0 6px; }
.doc h2 { text-align: left; font-size: 20px; margin: 32px 0 8px; color: var(--accent); }
.doc .meta { color: var(--ink-soft); margin: 0 0 24px; }
.doc table { border-collapse: collapse; width: 100%; margin: 8px 0 16px; font-size: 15px; }
.doc th, .doc td { text-align: left; vertical-align: top; padding: 8px 10px; border-bottom: 1px solid var(--line); }
.doc th { background: var(--bg-soft); }
.doc details { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 12px 16px; margin: 10px 0; }
.doc summary { cursor: pointer; font-weight: 600; }
.doc details p { margin: 10px 0 0; }
.table-scroll { overflow-x: auto; }

/* Footer */
footer { border-top: 1px solid var(--line); padding: 28px 0 40px; margin-top: 24px; color: var(--ink-soft); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; justify-content: space-between; }
footer nav { display: flex; flex-wrap: wrap; gap: 6px 16px; }
footer a { color: var(--ink-soft); }