/* 外部フォント・外部画像は使わない（外部への通信を増やさないため） */
:root {
  --bg: #f6f3ec;
  --bg-2: #efe9dc;
  --fg: #1d2421;
  --muted: #5f6a64;
  --line: #ddd5c4;
  --card: #fffdf8;
  --accent: #0f6b57;
  --accent-2: #e2725b;
  --accent-soft: #d8ece5;
  --accent-fg: #ffffff;
  --shadow: 0 1px 2px rgba(29, 36, 33, 0.06), 0 8px 24px rgba(29, 36, 33, 0.08);
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141816;
    --bg-2: #1b201d;
    --fg: #ece8df;
    --muted: #a3aba5;
    --line: #2f3632;
    --card: #1e2421;
    --accent: #4fc3a1;
    --accent-2: #f08f78;
    --accent-soft: #20352d;
    --accent-fg: #0d1a15;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.85;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }
.label { color: var(--muted); font-size: 0.88rem; }

/* ナビ */
.nav { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; }
.logo { font-weight: 800; font-size: 1.1rem; letter-spacing: 0.04em; color: var(--fg); text-decoration: none; display: flex; align-items: center; gap: 8px; }
.logo-mark { width: 26px; height: 26px; border-radius: 8px; background: linear-gradient(135deg, var(--accent), var(--accent-2)); display: inline-block; position: relative; }
.logo-mark::after { content: ""; position: absolute; left: 7px; right: 7px; top: 8px; height: 2px; background: #fff; box-shadow: 0 5px 0 #fff, 0 10px 0 rgba(255,255,255,0.7); border-radius: 2px; }
.pill { display: inline-block; font-size: 0.78rem; font-weight: 700; padding: 4px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }

/* ヒーロー */
.hero { position: relative; overflow: hidden; padding: 28px 0 72px; }
.hero::before {
  content: ""; position: absolute; inset: -40% -20% auto auto; width: 620px; height: 620px; border-radius: 50%;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--accent-2) 28%, transparent), transparent);
  z-index: 0; pointer-events: none;
}
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(1.9rem, 4.4vw, 3rem); line-height: 1.35; margin: 14px 0 16px; letter-spacing: 0.01em; }
.hero h1 em { font-style: normal; background: linear-gradient(transparent 62%, color-mix(in srgb, var(--accent-2) 45%, transparent) 62%); }
.lead { font-size: 1.05rem; color: var(--muted); margin: 0 0 24px; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.badges { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 22px; padding: 0; list-style: none; }
.badges li { font-size: 0.85rem; padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; background: var(--card); }
.badges li::before { content: "✓ "; color: var(--accent); font-weight: 700; }

/* ヒーローの見本カード */
.paper {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 22px 22px 18px; transform: rotate(1.2deg); position: relative;
}
.paper::before { content: ""; position: absolute; inset: 10px -10px -10px 10px; border-radius: var(--radius); background: var(--bg-2); z-index: -1; transform: rotate(-3deg); }
.paper-head { display: flex; gap: 6px; margin-bottom: 14px; }
.paper-head span { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.paper-title { font-size: 0.8rem; color: var(--muted); margin-bottom: 6px; }
.paper p { margin: 0 0 8px; font-size: 0.92rem; }
.paper .sec { font-weight: 700; color: var(--accent); font-size: 0.85rem; margin-top: 12px; }
.paper .tag { position: absolute; right: -10px; top: -12px; background: var(--accent-2); color: #fff; font-size: 0.78rem; font-weight: 700; padding: 6px 12px; border-radius: 999px; box-shadow: var(--shadow); transform: rotate(4deg); }

/* ボタン */
.btn {
  display: inline-flex; align-items: center; gap: 8px; background: var(--accent); color: var(--accent-fg);
  border: 1px solid transparent; border-radius: 999px; padding: 12px 22px; font: inherit; font-weight: 700;
  text-decoration: none; cursor: pointer; transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  box-shadow: 0 6px 16px color-mix(in srgb, var(--accent) 30%, transparent);
}
.btn:hover { transform: translateY(-1px); }
.btn:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 45%, transparent); outline-offset: 2px; }
.btn.ghost { background: transparent; color: var(--fg); border-color: var(--line); box-shadow: none; }
.btn.small { padding: 8px 14px; font-size: 0.88rem; }
.btn[aria-disabled="true"] { opacity: 0.45; pointer-events: none; box-shadow: none; }

/* セクション */
section { padding: 64px 0; }
.section-alt { background: var(--bg-2); }
.eyebrow { font-size: 0.8rem; font-weight: 800; letter-spacing: 0.14em; color: var(--accent-2); text-transform: uppercase; }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); line-height: 1.45; margin: 6px 0 14px; }
h3 { font-size: 1.05rem; margin: 0 0 6px; }
.sub { color: var(--muted); margin: 0 0 28px; }

/* 3つの特徴・手順 */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.card p { margin: 0; color: var(--muted); font-size: 0.95rem; }
.num { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; font-weight: 800; color: var(--accent-fg); background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 60%, var(--accent-2))); margin-bottom: 12px; }

/* デモ */
.demo { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.samples { display: flex; gap: 8px; flex-wrap: wrap; }
label { display: block; font-weight: 700; font-size: 0.92rem; margin: 14px 0 6px; }
label .opt { font-weight: 400; color: var(--muted); font-size: 0.82rem; margin-left: 4px; }
textarea, input[type="text"], select {
  width: 100%; font: inherit; color: var(--fg); background: var(--bg);
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; transition: border-color 0.15s, box-shadow 0.15s;
}
textarea:focus, input[type="text"]:focus, select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent); }
textarea { min-height: 120px; resize: vertical; }
.row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; align-items: center; }
.out-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
#output {
  white-space: pre-wrap; min-height: 360px; font-size: 0.95rem; line-height: 30px;
  background:
    repeating-linear-gradient(var(--card) 0, var(--card) 29px, color-mix(in srgb, var(--line) 70%, transparent) 29px, color-mix(in srgb, var(--line) 70%, transparent) 30px);
  background-attachment: local;
  border: 1px dashed var(--line); border-radius: 10px; padding: 0 14px;
}
#output:empty::before { content: "ここに下書きが表示されます。左の例を押すと、すぐに試せます。"; color: var(--muted); }
.note { font-size: 0.85rem; color: var(--muted); margin-top: 12px; }

/* アンケート */
.feedback {
  border-radius: 20px; padding: 36px; color: var(--accent-fg);
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 55%, var(--accent-2)));
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 24px; align-items: center; box-shadow: var(--shadow);
}
.feedback h2 { color: inherit; margin-top: 0; }
.feedback ul { margin: 0; padding-left: 1.2em; }
.feedback .btn { background: var(--card); color: var(--accent); box-shadow: none; }
.count { font-size: 2.6rem; font-weight: 800; line-height: 1; }

/* よくある質問 */
.faq { max-width: 760px; }
details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 700; list-style: none; position: relative; padding-right: 24px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 0; top: 0; color: var(--accent); font-weight: 800; }
details[open] summary::after { content: "−"; }
details p { margin: 10px 0 0; color: var(--muted); }

/* フッター（プライバシーポリシー等の簡素なページも同じスタイルを使う） */
footer { color: var(--muted); font-size: 0.88rem; padding: 36px 0 48px; border-top: 1px solid var(--line); }
footer p { margin: 4px 0; }
.page main, .page header { max-width: 760px; margin: 0 auto; padding: 0 20px; }
.page header { padding-top: 32px; }
.page h2 { font-size: 1.15rem; margin-top: 32px; }

/* スマホ */
@media (max-width: 820px) {
  .hero-grid, .demo, .feedback { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .paper { transform: none; }
  .hero { padding-bottom: 48px; }
  section { padding: 48px 0; }
  .feedback { padding: 26px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}