:root {
  --bg: #f7f3fb;
  --card: #ffffff;
  --text: #2a2238;
  --sub: #6b6080;
  --line: #e6ddf0;
  --accent: #8a3cff;
  --accent2: #ff4f9a;
  --todo-bg: #ffe9a8;
  --todo-text: #7a4b00;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17121f;
    --card: #221b2e;
    --text: #efe9f7;
    --sub: #b3a8c4;
    --line: #3a3048;
    --accent: #b98cff;
    --accent2: #ff7ab5;
    --todo-bg: #5a4210;
    --todo-text: #ffe2a0;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  line-height: 1.75;
  -webkit-text-size-adjust: 100%;
}
header {
  background: linear-gradient(135deg, #ff4f9a 0%, #8a3cff 60%, #3b1c7a 100%);
  color: #fff;
  padding: 36px 16px 32px;
  text-align: center;
}
header img {
  width: 112px;
  height: 112px;
  border-radius: 25px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .3);
}
header h1 { margin: 14px 0 2px; font-size: 1.6rem; letter-spacing: .04em; }
header .en { margin: 0; font-size: .85rem; letter-spacing: .25em; opacity: .85; }
header .catch { margin: 12px 0 0; font-size: 1rem; }
header.small { padding: 22px 16px; }
header.small h1 { margin: 0; font-size: 1.3rem; }
main { max-width: 720px; margin: 0 auto; padding: 20px 16px 8px; }
section {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 18px 8px;
  margin-bottom: 16px;
}
h2 {
  margin: 0 0 10px;
  font-size: 1.1rem;
  padding-left: 10px;
  border-left: 4px solid var(--accent2);
}
h3 { margin: 16px 0 4px; font-size: 1rem; }
p, li { font-size: .95rem; }
ul, ol { padding-left: 1.3em; }
dl { margin: 0; }
dt { font-weight: bold; margin-top: 12px; }
dt::before { content: "Q. "; color: var(--accent); }
dd { margin: 4px 0 12px 0; color: var(--sub); }
dd::before { content: "A. "; color: var(--accent2); font-weight: bold; }
a { color: var(--accent); word-break: break-all; }
.note { color: var(--sub); font-size: .85rem; }
.todo {
  background: var(--todo-bg);
  color: var(--todo-text);
  padding: 0 4px;
  border-radius: 4px;
  font-weight: bold;
}
footer {
  text-align: center;
  color: var(--sub);
  font-size: .8rem;
  padding: 8px 16px 32px;
}
footer a { margin: 0 8px; }
.app {
  display: flex;
  gap: 14px;
  align-items: center;
  padding-bottom: 10px;
}
.app img {
  width: 76px;
  height: 76px;
  border-radius: 17px;
  flex-shrink: 0;
}
.app h3 { margin: 0; font-size: 1.05rem; }
.app p { margin: 2px 0 6px; color: var(--sub); font-size: .85rem; }
.app .links a { margin-right: 12px; font-size: .9rem; }