:root {
  --bg: #fafafa;
  --fg: #1a1a1a;
  --muted: #6b6b6b;
  --card-bg: #ffffff;
  --border: #e5e5e5;
  --accent: #2563eb;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --fg: #f0f0f0;
    --muted: #a0a0a0;
    --card-bg: #1c1c1c;
    --border: #2e2e2e;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Noto Sans TC", "Noto Sans SC", sans-serif;
  line-height: 1.55;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 24px; }

header.site { padding: 48px 0 24px; text-align: center; }
header.site h1 { margin: 0 0 8px; font-size: 1.75rem; }
header.site p { margin: 0; color: var(--muted); }
.lang-switch { margin-top: 18px; font: 600 0.72rem/1 ui-monospace, "SF Mono", monospace; letter-spacing: 0.06em; text-transform: uppercase; }
.lang-switch a { margin: 0 10px; color: var(--muted); }
.lang-switch a.current { color: var(--fg); }

.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
  padding: 32px 0 72px;
}
.app-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px 24px 28px;
  text-decoration: none;
  color: var(--fg);
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.app-card:hover { transform: translateY(-2px); border-color: var(--accent); text-decoration: none; }
.app-card .platform-tag {
  font: 600 0.68rem/1 -apple-system, sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}
.app-card img.icon { width: 56px; height: 56px; border-radius: 12px; display: block; margin: 0 auto 14px; }
.app-card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.app-card p { margin: 0; color: var(--muted); font-size: 0.88rem; }

.app-card--soon .platform-tag { color: var(--accent); }
div.app-card { cursor: default; opacity: 0.6; }
div.app-card:hover { transform: none; border-color: var(--border); }

footer.site { text-align: center; padding: 32px 0 48px; color: var(--muted); font-size: 0.85rem; }

/* flagship app page */
.hero { text-align: center; padding: 56px 0 32px; }
.hero img.icon { width: 96px; height: 96px; border-radius: 22px; margin-bottom: 20px; }
.hero h1 { margin: 0 0 8px; font-size: 2rem; }
.hero .tagline { color: var(--muted); font-size: 1.1rem; margin: 0 0 24px; }
.hero .promo { max-width: 640px; margin: 0 auto 28px; }
.cta {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 12px 28px;
  border-radius: 999px;
  font-weight: 600;
}
.cta:hover { text-decoration: none; opacity: 0.9; }
.cta--disabled { background: var(--muted); cursor: default; }
.cta--disabled:hover { opacity: 1; }

.legal-link { display: block; margin-top: 14px; color: var(--muted); font-size: 0.82rem; }

.screenshots {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding: 8px 0 40px;
  scroll-snap-type: x mandatory;
}
.screenshots img {
  height: 360px;
  border-radius: 10px;
  border: 1px solid var(--border);
  scroll-snap-align: start;
  flex-shrink: 0;
}

.features { list-style: none; margin: 0 auto 48px; padding: 0; max-width: 560px; }
.features li {
  padding: 12px 0 12px 28px;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.features li:last-child { border-bottom: none; }
.features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.back-link { display: block; text-align: center; padding: 0 0 48px; color: var(--muted); }

.qa { max-width: 560px; margin: 0 auto 48px; }
.qa-item { padding: 16px 0; border-bottom: 1px solid var(--border); }
.qa-item:last-child { border-bottom: none; }
.qa-item h3 { margin: 0 0 6px; font-size: 0.95rem; }
.qa-item p { margin: 0; color: var(--muted); font-size: 0.88rem; }

/* legal / policy pages */
.legal { padding: 40px 0 64px; max-width: 680px; margin: 0 auto; }
.legal h1 { font-size: 1.6rem; margin: 0 0 4px; }
.legal .updated { color: var(--muted); font-size: 0.85rem; margin: 0 0 32px; }
.legal h2 { font-size: 1.1rem; margin: 32px 0 8px; }
.legal p, .legal li { color: var(--fg); }
.legal ul { padding-left: 20px; }
.legal a { word-break: break-word; }

/* Support block — the Support URL Apple checks has to answer "how do I get help?" */
.support { max-width: 560px; margin: 0 auto 48px; padding-top: 24px; border-top: 1px solid var(--border); }
.support h2 { margin: 0 0 8px; font-size: 1rem; }
.support p { margin: 0 0 10px; color: var(--muted); font-size: 0.88rem; line-height: 1.6; }
.support-link { color: var(--accent, #2563eb); font-size: 0.9rem; font-weight: 600; text-decoration: none; }
.support-link:hover { text-decoration: underline; }