/* 注音密碼 App 網站：沿用 App 與網頁版的方格紙、鍵帽卡片。不載入外部字體，用系統字型。 */
:root {
  --paper: #f5f3ed;
  --grid: rgba(23, 30, 52, 0.08);
  --card: #fffefa;
  --ink: #171e34;
  --muted: #5f6476;
  --coral: #ed735f;
  --coral-ink: #b6402c;
  --shadow: #171e34;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #14182a;
    --grid: rgba(245, 243, 237, 0.06);
    --card: #1e2338;
    --ink: #f5f3ed;
    --muted: #b4b7c4;
    --coral: #ef8a78;
    --coral-ink: #f4a596;
    --shadow: #05070f;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", "Segoe UI", Roboto, sans-serif;
}

a { color: var(--coral-ink); text-underline-offset: 3px; }
a:focus-visible { outline: 3px solid var(--coral); outline-offset: 2px; }

.wrap { max-width: 760px; margin: 0 auto; padding: 24px 16px 48px; }

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 28px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
  font-size: 18px;
  text-decoration: none;
}
.brand img { width: 40px; height: 40px; border-radius: 9px; }
.lang {
  border: 2px solid var(--ink);
  background: var(--card);
  color: var(--ink);
  padding: 4px 12px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.card {
  background: var(--card);
  border: 2px solid var(--ink);
  border-top: 7px solid var(--coral);
  box-shadow: 6px 6px 0 var(--shadow);
  padding: 20px 20px 22px;
  margin: 0 0 28px;
}

h1 { font-size: clamp(28px, 7vw, 40px); line-height: 1.25; margin: 0 0 12px; }
h2 { font-size: 20px; line-height: 1.4; margin: 0 0 8px; }
h3 { font-size: 17px; margin: 18px 0 4px; }
p { margin: 0 0 12px; }
ul { margin: 0 0 12px; padding-left: 22px; }
li { margin: 4px 0; }
.lead { font-size: 18px; color: var(--muted); }
.meta { color: var(--muted); font-size: 14px; }

.example {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin: 18px 0 6px;
  font-size: 20px;
}
.keys {
  font: 600 22px/1.3 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--paper);
  border: 2px solid var(--ink);
  padding: 4px 12px;
  letter-spacing: 0.04em;
  overflow-wrap: anywhere;
}

.stores { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.store {
  display: inline-flex;
  flex-direction: column;
  min-width: 170px;
  border: 2px solid var(--ink);
  padding: 8px 16px;
  color: var(--ink);
  text-decoration: none;
  background: var(--card);
}
.store strong { font-size: 17px; }
.store span { font-size: 13px; color: var(--muted); }
.store[aria-disabled="true"] { opacity: 0.75; }

.cta {
  display: inline-block;
  margin-top: 6px;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 18px;
  font-weight: 700;
  text-decoration: none;
}

footer { color: var(--muted); font-size: 14px; }
footer nav { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-bottom: 8px; }