:root {
  --ink: #111;
  --border: #111;
  --bg: #f6f7fb;
  --card: #ffffff;
  --muted: #6b7280;
  --accent: #2563eb;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto,
               "Hiragino Kaku Gothic ProN", "Hiragino Sans",
               "Noto Sans JP", Meiryo, sans-serif;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
}

.wrapper {
  max-width: 980px;
  margin: 28px auto;
  background: var(--card);
  border: 6px solid var(--border);
  border-radius: 10px;
  padding: 28px;
  counter-reset: step;
}

header h1 {
  margin: 0 0 18px 0;
  font-size: 28px;
  letter-spacing: 0.02em;
}

.meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 8px 0 18px;
  color: var(--muted);
  font-size: 14px;
}

.hr { height: 1px; background: #e5e7eb; margin: 12px 0 20px; }

.step { margin: 26px 0; padding: 6px 0 0; counter-increment: step; }
.step-title { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.step-title::before { content: "Step " counter(step) " ～ "; }

.step-desc { margin-bottom: 14px; }

.frame {
  position: relative;
  border: 6px solid var(--border);
  border-radius: 6px;
  padding: 16px;
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  overflow: hidden;
}

figure.frame { margin: 0; }

.frame img { max-width: 100%; height: auto; display: block; object-fit: contain; }

.placeholder { font-size: 22px; color: var(--muted); user-select: none; }

.note { margin-top: 8px; font-size: 14px; color: var(--muted); }
figcaption.note { text-align: right; }

.tips {
  margin-top: 22px; padding: 14px 16px;
  border-left: 4px solid var(--accent);
  background: #f0f6ff; border-radius: 8px; font-size: 14px;
}

.footer { margin-top: 28px; font-size: 12px; color: var(--muted); text-align: right; }

/* 画像グリッドが必要な場合のユーティリティ */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }

/* モバイル調整 */
@media (max-width: 640px) {
  .wrapper { padding: 18px; border-width: 5px; }
  header h1 { font-size: 24px; }
  .step-title { font-size: 18px; }
}

/* 印刷用 */
@media print {
  body { background: #fff; }
  .wrapper { border-width: 3px; }
  a[href]::after { content: " (" attr(href) ")"; font-size: 11px; }
}


/* --- ダウンロードカードとボタン --- */
.download-card { border: 2px dashed var(--border); background: #fff; border-radius: 10px; padding: 16px; margin: 18px 0; }
.download-card__title { font-weight: 700; margin-bottom: 6px; }
.download-card__desc { margin: 6px 0 12px; color: var(--muted); }
.download-card__actions { display: grid; gap: 8px; align-items: start; }
.download-meta { font-size: 13px; color: var(--muted); }
.btn { display: inline-block; padding: 10px 16px; border-radius: 10px; text-decoration: none; border: 2px solid var(--accent); }
.btn-primary { background: var(--accent); color: #fff; }
.btn:active { transform: translateY(1px); }

/* ==== タイトル画面（ホーム） ==== */
.home-header { text-align: center; margin: 6px 0 18px; }
.subtitle { color: var(--muted); margin: 6px 0 0; }
.home-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card.nav-card { display: grid; gap: 8px; border: 2px solid var(--border); border-radius: 12px; padding: 16px; text-decoration: none; color: inherit; background: #fff; }
.nav-card:hover { transform: translateY(-2px); transition: transform .12s ease; }
.nav-card__title { font-weight: 700; font-size: 18px; }
.nav-card__desc { color: var(--muted); font-size: 14px; }
.backlink a { text-decoration: none; }

.h2 { font-size: 20px; margin: 6px 0 10px; }

/* テーブル */
.table-scroll { overflow: auto; border: 1px solid #e5e7eb; border-radius: 8px; background:#fff; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 10px 12px; border-bottom: 1px solid #f1f5f9; vertical-align: top; }
.table th { text-align: left; background: #f8fafc; }
.input { width: 100%; padding: 10px 12px; border: 1px solid #e5e7eb; border-radius: 8px; background:#fff; }
.table-tools { margin: 12px 0; }

/* ダウンロードカード＆ボタン（前に入れていたやつを流用） */
.download-card { border: 2px dashed var(--border); background: #fff; border-radius: 10px; padding: 16px; margin: 18px 0; }
.download-card__title { font-weight: 700; margin-bottom: 6px; }
.download-card__desc { margin: 6px 0 12px; color: var(--muted); }
.download-card__actions { display: grid; gap: 8px; align-items: start; }
.download-meta { font-size: 13px; color: var(--muted); }
.btn { display: inline-block; padding: 10px 16px; border-radius: 10px; text-decoration: none; border: 2px solid var(--accent); }
.btn-primary { background: var(--accent); color: #fff; }
.btn:active { transform: translateY(1px); }

/* レスポンシブ */
@media (max-width: 900px) {
  .home-grid { grid-template-columns: 1fr; }
}


/* ===== ホームページおしゃれ化 ===== */

body {
  background:
    radial-gradient(circle at top, #ffffff 0%, #eef2ff 100%);
}

/* タイトル */
.home-header h1{
  font-size:34px;
  letter-spacing:0.05em;
}

.subtitle{
  font-size:15px;
}

/* カードグリッド */
.home-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:20px;
  margin-top:20px;
}

/* サーバーカード */
.card.nav-card{
  border:2px solid var(--border);
  border-radius:14px;
  padding:18px;
  background:#fff;
  box-shadow:0 6px 18px rgba(0,0,0,0.08);
  transition:
    transform .15s ease,
    box-shadow .15s ease;
}

/* ホバー */
.nav-card:hover{
  transform:translateY(-6px);
  box-shadow:0 14px 30px rgba(0,0,0,0.12);
}

/* タイトル */
.nav-card__title{
  font-size:20px;
  font-weight:700;
}

/* 説明 */
.nav-card__desc{
  font-size:14px;
  color:var(--muted);
}

/* ボタン */
.btn{
  margin-top:8px;
  font-size:14px;
  text-align:center;
}

/* セクション */
.section{
  margin-top:30px;
}

.section-title{
  font-size:20px;
  margin-bottom:10px;
  padding-left:10px;
  border-left:5px solid var(--accent);
}

/* ボタンを少し良くする */
.backlink{
  margin-bottom:10px;
}

.backlink .btn{
  display:inline-block;
  font-size:14px;
}