:root {
  --ink: #1d2433;
  --sub: #5b6475;
  --line: #dfe3ea;
  --bg: #f7f8fa;
  --card: #fff;
  --accent: #2357d6;
  --accent-ink: #fff;
  --warn: #b4232c;
  --note: #fff7e0;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.8;
  font-size: 16px;
}
.trial { background: var(--note); border-bottom: 1px solid #f0d98c; text-align: center; font-size: 13px; padding: 6px 16px; }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 16px; }
header { padding-top: 28px; padding-bottom: 8px; }
header .brand { font-weight: 700; font-size: 18px; color: var(--ink); text-decoration: none; }
h1 { font-size: 26px; line-height: 1.5; margin: 28px 0 12px; }
h2 { font-size: 20px; margin: 36px 0 12px; }
p { margin: 0 0 14px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 20px; margin: 16px 0; }
.price { font-size: 32px; font-weight: 700; }
.price small { font-size: 15px; font-weight: 400; color: var(--sub); }
ul { padding-left: 1.3em; margin: 0 0 14px; }
table { width: 100%; border-collapse: collapse; background: var(--card); }
th, td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; font-size: 15px; }
th { background: #f0f2f6; width: 30%; font-weight: 600; }
.btn { display: inline-block; border: 0; border-radius: 8px; padding: 14px 24px; font-size: 16px; font-weight: 700; cursor: pointer; text-decoration: none; background: var(--accent); color: var(--accent-ink); }
.btn.sub { background: #e9edf5; color: var(--ink); }
.btn[disabled] { opacity: .45; cursor: not-allowed; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 24px 0; }
label { display: block; font-weight: 600; margin: 16px 0 6px; }
label .opt { font-weight: 400; color: var(--sub); font-size: 13px; margin-left: 6px; }
input[type=text], input[type=email], input[type=tel], input[type=url] { width: 100%; padding: 12px; font-size: 16px; border: 1px solid #c7ccd6; border-radius: 6px; background: #fff; }
.radio { display: flex; gap: 20px; }
.radio label { font-weight: 400; margin: 0; display: flex; gap: 6px; align-items: center; }
.err { color: var(--warn); font-size: 14px; margin-top: 4px; display: none; }
.err.on { display: block; }
.agree { display: flex; gap: 10px; align-items: flex-start; background: var(--card); border: 2px solid var(--accent); border-radius: 8px; padding: 14px; margin-top: 20px; font-weight: 400; }
.agree input { margin-top: 6px; width: 18px; height: 18px; flex: none; }
.closed { background: #fdecee; border: 1px solid #f2b8bf; border-radius: 8px; padding: 14px 16px; }
.muted { color: var(--sub); font-size: 14px; }
footer { padding: 40px 16px; color: var(--sub); font-size: 13px; }
footer a { color: var(--sub); margin-right: 14px; }
.hidden { display: none; }
@media (max-width: 560px) {
  h1 { font-size: 22px; }
  th { width: 34%; }
  th, td { padding: 8px; font-size: 14px; }
  .btn { width: 100%; text-align: center; }
}