@charset "UTF-8";
/* ==========================================================
   ドア防振をしましょう。 2026 専用スタイル
   ========================================================== */

.dn {
  --accent: #9c0004;
  --steel: #3b4a57;
  --silver: #e9edf0;
  --ink: #1a1a1a;
  --sub: #555;
  --line: #ddd;
  --panel: #f6f6f4;
  color: var(--ink);
  font-size: 1.5rem;
  line-height: 1.9;
  letter-spacing: .03em;
  text-align: left;
  max-width: 760px;
  margin: 0 auto;
  padding: 10px 0 40px;
}
.dn * { box-sizing: border-box; }
.dn img { max-width: 100%; height: auto; vertical-align: bottom; }
.dn p { margin: 0 0 1.1em; text-align: justify; }
.dn strong, .dn .em { font-weight: bold; }
.dn figure { margin: 0 0 20px; text-align: center; }
.dn [id] { scroll-margin-top: 20px; }

/* ---------- タイトル ---------- */
.dn .dn-title {
  margin: 10px 0 18px; padding: 34px 16px; text-align: center; color: #fff;
  font-size: 3.2rem; font-weight: bold; letter-spacing: .1em; line-height: 1.4; border-radius: 8px;
  background: linear-gradient(135deg, #2b3640 0%, #55626e 45%, #2b3640 100%);
  box-shadow: inset 0 0 0 3px rgba(255,255,255,.12);
}
.dn .dn-lead { text-align: center; font-weight: bold; font-size: 1.65rem; line-height: 1.9; margin: 0 0 26px; }
.dn .dn-toc { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin: 0 0 20px; }
.dn .dn-toc a {
  display: inline-block; padding: 6px 16px; border-radius: 999px; font-size: 1.35rem; text-decoration: none;
  background: var(--silver); color: var(--steel); font-weight: bold; border: 1px solid #cfd6dc;
}
.dn .dn-toc a:hover { background: var(--steel); color: #fff; }

.dn .part-title {
  font-size: 2.1rem; font-weight: bold; text-align: center; line-height: 1.5;
  margin: 60px 0 24px; padding: 16px 10px;
  border-top: 3px solid var(--steel); border-bottom: 3px solid var(--steel);
}

/* ---------- 強調 ---------- */
.dn .point {
  font-weight: bold; font-size: 1.65rem; line-height: 1.8; text-align: left;
  background: var(--silver); border-left: 6px solid var(--accent); border-radius: 0 8px 8px 0;
  padding: 14px 18px; margin: 22px 0;
}
.dn .note { font-size: 1.35rem; color: var(--sub); }

/* ---------- 画像＋文 ---------- */
.dn .media { display: flex; gap: 22px; align-items: flex-start; margin: 10px 0 18px; }
.dn .media figure { flex: 0 0 220px; margin: 0; }
.dn .media figure img { border-radius: 6px; }
.dn .media figcaption { font-size: 1.15rem; line-height: 1.5; color: var(--sub); margin-top: 6px; }
.dn .media figcaption span { color: #d00; font-weight: bold; }
.dn .media .txt { flex: 1 1 auto; min-width: 0; }

/* ---------- プラン一覧 ---------- */
.dn .ladder { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 6px 0 30px; }
.dn .ladder a {
  display: flex; flex-direction: column; align-items: center; gap: 4px; text-align: center; text-decoration: none;
  color: var(--ink); border: 1px solid var(--line); border-radius: 10px; padding: 12px 6px; background: #fff;
}
.dn .ladder a:hover { border-color: var(--steel); background: #f7f9fa; }
.dn .ladder .nm { font-weight: bold; font-size: 1.35rem; line-height: 1.4; }
.dn .ladder .pr { color: #d00; font-weight: bold; font-size: 1.8rem; line-height: 1.2; }
.dn .ladder .pr small { display: block; font-size: 1.1rem; color: var(--sub); font-weight: normal; }
.dn .ladder .lv { display: flex; gap: 3px; }
.dn .ladder .lv i { width: 12px; height: 6px; border-radius: 2px; background: var(--steel); }
.dn .ladder .lv i.off { background: #d6dbe0; }

.dn .plan { border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px 8px; margin: 0 0 22px; background: #fff; }
.dn .plan-head { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; margin: 0 0 14px; padding-bottom: 12px; border-bottom: 2px solid var(--steel); }
.dn .plan-name { font-size: 2.1rem; font-weight: bold; line-height: 1.3; margin: 0; }
.dn .plan-name small { font-size: 1.3rem; color: var(--sub); font-weight: normal; margin-left: 8px; }
.dn .plan-tag { background: var(--accent); color: #fff; font-size: 1.2rem; font-weight: bold; padding: 2px 10px; border-radius: 3px; }
.dn .plan-price { margin-left: auto; color: #d00; font-size: 2.6rem; font-weight: bold; line-height: 1.2; }
.dn .plan-price small { font-size: 1.3rem; color: var(--ink); font-weight: normal; }
.dn .plan figure img { border-radius: 6px; max-height: 360px; width: auto; }

.dn .callout { background: #fff8e8; border: 2px solid #d9a93a; border-radius: 10px; padding: 18px 20px 6px; margin: 30px 0; }
.dn .callout-title { font-weight: bold; font-size: 1.7rem; text-align: center !important; color: #8a5a00; }
.dn .closing { text-align: center !important; font-weight: bold; font-size: 1.6rem; margin: 30px 0; }

/* ---------- お問い合わせ ---------- */
.dn .contact { text-align: center; margin: 30px 0 10px; }
.dn .contact a.btn {
  display: inline-block; min-width: 230px; margin: 6px; padding: 13px 20px; border-radius: 6px;
  background: var(--accent); color: #fff; font-weight: bold; font-size: 1.6rem; text-decoration: none;
}
.dn .contact a.btn.tel { background: #555; }
.dn .contact a.btn:hover { opacity: .85; }
.dn .to-top { text-align: center !important; }

/* ---------- スマホ ---------- */
@media screen and (max-width: 667px) {
  .dn { font-size: 1.45rem; padding-left: 4px; padding-right: 4px; }
  .dn .dn-title { font-size: 2.4rem; padding: 24px 10px; }
  .dn .dn-lead { font-size: 1.45rem; text-align: left; }
  .dn .dn-lead br { display: none; }
  .dn .part-title { font-size: 1.75rem; margin-top: 46px; }
  .dn .point { font-size: 1.5rem; }
  .dn .media { flex-direction: column; align-items: center; gap: 10px; }
  .dn .media figure { flex-basis: auto; max-width: 220px; }
  .dn .ladder { grid-template-columns: 1fr 1fr; }
  .dn .plan { padding: 14px 12px 4px; }
  .dn .plan-name { font-size: 1.8rem; }
  .dn .plan-price { margin-left: 0; width: 100%; font-size: 2.3rem; }
  .dn .closing br { display: none; }
  .dn .contact a.btn { display: block; margin: 8px auto; max-width: 320px; }
}