:root {
  --bg: #f7f3ec;
  --paper: #fffdf9;
  --ink: #2b2620;
  --muted: #6f665b;
  --line: #e2d9cb;
  --accent: #2f5d62;
  --accent-ink: #ffffff;
  --warn: #a4402a;
  --soft: #eef3f1;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.85;
}
.wrap { max-width: 680px; margin: 0 auto; padding: 0 16px; }
header.hero { padding: 56px 0 40px; text-align: center; border-bottom: 1px solid var(--line); }
.brand { font-size: 13px; letter-spacing: .15em; color: var(--muted); margin: 0 0 18px; }
h1 {
  font-family: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-weight: 600; font-size: 28px; line-height: 1.6; margin: 0 0 18px;
}
.lead { color: var(--muted); margin: 0; }
section { padding: 40px 0; border-bottom: 1px solid var(--line); }
h2 {
  font-family: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-weight: 600; font-size: 21px; margin: 0 0 16px;
}
h3 { font-size: 16px; margin: 24px 0 6px; }
p { margin: 0 0 12px; }
.points { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.points li { background: var(--paper); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
.points strong { display: block; }
.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; }
.steps li { position: relative; padding: 0 0 16px 40px; }
.steps li::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: 2px; width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent); color: var(--accent-ink); font-size: 13px; text-align: center; line-height: 26px;
}
details { background: var(--paper); border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 600; }
details p { margin: 10px 0 0; color: var(--muted); }
.btn {
  display: inline-block; background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 999px;
  padding: 14px 28px; font-size: 16px; font-weight: 600; text-decoration: none; cursor: pointer; font-family: inherit;
}
.btn:disabled { opacity: .5; cursor: wait; }
.center { text-align: center; }

/* フォーム */
form { display: grid; gap: 22px; }
fieldset { border: 0; padding: 0; margin: 0; display: grid; gap: 18px; }
legend { font-weight: 700; font-size: 17px; margin-bottom: 4px; padding: 0; }
.field { display: grid; gap: 6px; }
label.q { font-weight: 600; }
.req, .opt { font-size: 12px; border-radius: 4px; padding: 1px 6px; margin-left: 6px; font-weight: 600; vertical-align: 1px; }
.req { background: var(--warn); color: #fff; }
.opt { background: var(--line); color: var(--muted); }
.hint { font-size: 13px; color: var(--muted); margin: 0; }
input[type=text], input[type=url], textarea, select {
  width: 100%; font: inherit; color: inherit; background: var(--paper);
  border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px;
}
textarea { min-height: 120px; resize: vertical; }
input:focus, textarea:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.choices { display: flex; flex-wrap: wrap; gap: 8px; }
.choices label {
  border: 1px solid var(--line); background: var(--paper); border-radius: 999px; padding: 6px 14px; cursor: pointer;
}
.choices input { margin-right: 4px; }
.check { display: flex; gap: 10px; align-items: flex-start; background: var(--soft); border-radius: 8px; padding: 12px; }
.check input { margin-top: 6px; flex: none; }
.count { font-size: 12px; color: var(--muted); text-align: right; }
.photos { display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); gap: 8px; }
.photos figure { margin: 0; position: relative; }
.photos img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 8px; display: block; }
.photos button {
  position: absolute; top: 4px; right: 4px; border: 0; border-radius: 50%; width: 26px; height: 26px;
  background: rgba(0,0,0,.6); color: #fff; cursor: pointer; font-size: 14px; line-height: 26px; padding: 0;
}
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.msg { border-radius: 8px; padding: 12px 14px; }
.msg.err { background: #f8e5df; color: var(--warn); }
.done { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 28px 20px; text-align: center; }
footer { padding: 28px 0 48px; font-size: 13px; color: var(--muted); text-align: center; }
footer a { color: inherit; }
@media (min-width: 720px) { h1 { font-size: 32px; } header.hero { padding: 80px 0 56px; } }