/* 日栄紙工社 公式サイト 共通スタイル（静的HTML・外部部品なし） */
:root {
  --blue: #1f5fc4;
  --blue-dark: #15448f;
  --green: #4a9a3a;
  --text: #222;
  --muted: #666;
  --line: #d8d8d8;
  --bg: #ededed;
  --panel: #f5f5f5;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, "Yu Gothic", "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
}
img { max-width: 100%; height: auto; }
a { color: var(--blue); }
a:hover { color: var(--blue-dark); }

.wrapper {
  max-width: 1000px;
  margin: 0 auto;
  background: #fff;
}

/* ---------- ヘッダー ---------- */
.header {
  padding: 10px 20px 0;
  border-top: 4px solid var(--blue);
}
.tagline {
  margin: 0 0 6px;
  font-size: 11px;
  color: var(--muted);
  line-height: 1.4;
}
.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 10px;
}
.logo { margin: 0; line-height: 0; }
.logo img { width: 226px; height: auto; }
.header-tel {
  text-align: right;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.4;
}
.header-tel strong {
  display: block;
  font-size: 20px;
  color: var(--text);
  letter-spacing: 0.02em;
}
.header-tel .btn-inquiry {
  display: inline-block;
  margin-top: 4px;
  padding: 4px 14px;
  background: var(--blue);
  color: #fff;
  border-radius: 4px;
  text-decoration: none;
  font-weight: bold;
  font-size: 14px;
}
.header-tel .btn-inquiry:hover { background: var(--blue-dark); }

/* メニュー開閉ボタン（スマホだけ表示） */
.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 4px;
  padding: 8px 12px;
  font-size: 15px;
  cursor: pointer;
}
.nav-toggle::before {
  content: "☰";
  margin-right: 6px;
  font-size: 18px;
}

/* ---------- 本体の3列 ---------- */
.contents {
  display: grid;
  grid-template-columns: 200px 1fr 200px;
  gap: 20px;
  padding: 0 20px 20px;
  border-top: 1px solid var(--line);
}

/* 左メニュー */
.nav { padding-top: 16px; }
.nav ul { list-style: none; margin: 0; padding: 0; }
.nav li a {
  display: block;
  padding: 7px 10px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: var(--text);
  line-height: 1.3;
}
.nav li a .en {
  display: block;
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.03em;
}
.nav li.parent a {
  font-weight: bold;
  background: var(--panel);
  border-left: 4px solid var(--blue);
}
.nav li.sub a {
  padding-left: 22px;
  font-size: 14px;
}
.nav li.sub a::before { content: "› "; color: var(--blue); }
.nav li a:hover { background: #e8f0fb; }
.nav li.on a {
  background: var(--blue);
  color: #fff;
  border-left-color: var(--blue-dark);
}
.nav li.on a .en { color: #dbe6f8; }

/* 中央 */
.main { min-width: 0; padding-top: 16px; }
.page-title {
  margin: 0 0 20px;
  padding: 10px 14px;
  font-size: 22px;
  line-height: 1.4;
  color: #fff;
  background: linear-gradient(90deg, var(--blue), #3d7ddc);
  border-radius: 4px;
}
.section-title {
  margin: 28px 0 12px;
  padding: 6px 12px;
  font-size: 18px;
  border-left: 6px solid var(--green);
  background: var(--panel);
}
.section-title:first-child { margin-top: 0; }

/* トップの写真（自動で切り替え） */
.hero {
  position: relative;
  aspect-ratio: 570 / 250;
  overflow: hidden;
  border-radius: 4px;
  background: #cfe3c9;
}
.hero a, .hero span {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.8s;
}
.hero .active { opacity: 1; }
.hero img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* 新着情報 */
.topics { margin: 0; }
.topics dt {
  float: left;
  clear: left;
  width: 7em;
  color: var(--muted);
  font-size: 14px;
  padding: 6px 0;
}
.topics dd {
  margin: 0;
  padding: 6px 0 6px 7em;
  border-bottom: 1px dotted var(--line);
}
.topics dd a { text-decoration: none; }
.topics dd a:hover { text-decoration: underline; }
.topics-more { text-align: right; margin: 8px 0 0; }
.topics-more a {
  display: inline-block;
  padding: 3px 14px;
  border: 1px solid var(--blue);
  border-radius: 3px;
  text-decoration: none;
  font-size: 14px;
}

/* 社長挨拶などの文章 */
.text p { margin: 0 0 1em; }
.sign { text-align: right; margin-top: 1.5em; line-height: 1.6; }
.sign strong { font-size: 17px; }

/* 会社概要の表 */
.profile-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
.profile-table th, .profile-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  text-align: left;
}
.profile-table th {
  width: 9em;
  background: var(--panel);
  font-weight: bold;
  white-space: nowrap;
}
.profile-table ul { margin: 0; padding-left: 1.2em; }
.profile-table .sub { color: var(--muted); font-size: 13px; }
.figure { margin: 24px 0 0; text-align: center; }
.figure img { border-radius: 4px; }

/* 右バナー */
.side { padding-top: 16px; }
.banner-list { list-style: none; margin: 0; padding: 0; }
.banner-list li { margin-bottom: 10px; font-size: 12px; color: var(--muted); line-height: 1.5; }
.banner-list .text-banner a {
  display: block;
  padding: 9px 10px;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 5px solid var(--green);
  border-radius: 3px;
  text-decoration: none;
  color: var(--text);
  font-weight: bold;
  font-size: 14px;
  line-height: 1.3;
}
.banner-list .text-banner a:hover { background: #eef7ec; }
.banner-list .img-banner img { display: block; width: 100%; border: 1px solid var(--line); }

/* ---------- フッター ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding: 16px 20px 20px;
  font-size: 13px;
}
.pagetop { text-align: right; margin: 0 0 10px; }
.pagetop a { text-decoration: none; }
.footer-nav { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 4px 0; }
.footer-nav li { padding: 0 10px; border-left: 1px solid var(--line); line-height: 1.4; }
.footer-nav li:first-child { border-left: 0; padding-left: 0; }
.footer-nav a { text-decoration: none; color: var(--text); }
.footer-nav a:hover { text-decoration: underline; }
.copyright {
  margin: 16px 0 0;
  padding: 10px 0 0;
  border-top: 1px solid var(--line);
  font-style: normal;
  color: var(--muted);
  text-align: center;
}

/* ---------- タブレット ---------- */
@media (max-width: 900px) {
  .contents { grid-template-columns: 190px 1fr; }
  .side { grid-column: 1 / -1; }
  .banner-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .banner-list li { margin: 0; }
}

/* ---------- スマホ ---------- */
@media (max-width: 640px) {
  body { font-size: 15px; }
  .header { padding: 8px 16px 0; }
  .tagline { display: none; }
  .logo img { width: 170px; }
  .header-tel { display: none; }
  .nav-toggle { display: inline-block; }
  .contents { display: block; padding: 0 16px 16px; }
  .nav { display: none; padding-top: 10px; }
  .nav.open { display: block; }
  .nav li a .en { display: none; }
  .nav li a { padding: 11px 10px; font-size: 16px; }
  .nav li.sub a { font-size: 15px; }
  .page-title { font-size: 19px; }
  .topics dt { float: none; width: auto; padding: 6px 0 0; }
  .topics dd { padding: 0 0 6px; }
  .banner-list { grid-template-columns: 1fr 1fr; }
  .profile-table th, .profile-table td { display: block; width: auto; }
  .profile-table th { padding: 6px 10px; border-bottom: 0; }
  .profile-table td { padding: 6px 10px 12px; }
  .footer-nav { display: block; }
  .footer-nav li { border: 0; padding: 4px 0; border-bottom: 1px dotted var(--line); }
  .sign { text-align: left; }
  .mobile-contact {
    display: block;
    margin: 20px 0 0;
    padding: 14px;
    background: var(--panel);
    border-radius: 4px;
    text-align: center;
  }
}
.mobile-contact { display: none; }
.mobile-contact strong { display: block; font-size: 22px; }
.mobile-contact a.btn-inquiry {
  display: inline-block;
  margin-top: 8px;
  padding: 8px 24px;
  background: var(--blue);
  color: #fff;
  border-radius: 4px;
  text-decoration: none;
  font-weight: bold;
}

/* ---------- 下層ページの本文 ---------- */
.entry { margin-bottom: 28px; }
.entry::after { content: ""; display: block; clear: both; }
.entry p { margin: 0 0 1em; }
.entry h4 { margin: 1.2em 0 0.4em; font-size: 16px; color: var(--blue-dark); }
.date { color: var(--muted); font-size: 14px; margin: -6px 0 12px; }
.article-title { margin: 0 0 4px; font-size: 20px; line-height: 1.5; }
.page-nav { margin: 24px 0 0; padding-top: 12px; border-top: 1px solid var(--line); }
.page-nav a {
  display: inline-block; margin-right: 8px; padding: 4px 14px;
  border: 1px solid var(--blue); border-radius: 3px; text-decoration: none; font-size: 14px;
}
.fig { margin: 0 0 16px; text-align: center; }
.fig img { display: inline-block; margin: 4px; border-radius: 3px; vertical-align: top; }
.fig-left { float: left; margin: 0 16px 8px 0; max-width: 45%; }
.fig-right { float: right; margin: 0 0 8px 16px; max-width: 45%; }
.fig a.zoom { cursor: zoom-in; }
.entry table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 0 0 16px; }
.entry th, .entry td { padding: 8px 10px; border: 1px solid var(--line); vertical-align: top; text-align: left; }
.entry th { background: var(--panel); }
.entry dl.topics dt { float: left; clear: left; width: 7em; color: var(--muted); font-size: 14px; padding: 6px 0; }
.entry ul { padding-left: 1.4em; }
.embed-wrap { margin: 0 0 16px; }
iframe.embed { display: block; width: 100%; max-width: 100%; border: 0; }

/* 写真の拡大表示 */
.lightbox {
  position: fixed; inset: 0; z-index: 100; display: none;
  background: rgba(0,0,0,0.8); align-items: center; justify-content: center; cursor: zoom-out;
}
.lightbox.show { display: flex; }
.lightbox img { max-width: 94vw; max-height: 94vh; box-shadow: 0 0 24px rgba(0,0,0,0.6); background: #fff; }

@media (max-width: 640px) {
  .fig-left, .fig-right { float: none; max-width: 100%; margin: 0 0 12px; }
  .entry th, .entry td { display: block; }
  .entry th { border-bottom: 0; }
  .entry dl.topics dt { float: none; width: auto; padding: 6px 0 0; }
}

/* 写真＋見出し＋説明の格子（CFG製造工程など） */
.steps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 0 0 24px; }
.step { background: var(--panel); border-radius: 4px; padding: 10px; }
.step img { display: block; width: 100%; height: auto; border-radius: 3px; }
.step h3 { margin: 8px 0 4px; font-size: 16px; color: var(--blue-dark); }
.step p { margin: 0; font-size: 14px; }
@media (max-width: 480px) { .steps { grid-template-columns: 1fr; } }

/* 埋め込み枠の高さ（地図・問い合わせフォーム） */
iframe.embed[src*="google.com/maps"] { height: 450px; margin-bottom: 12px; }
iframe.embed[src*="form-mailer"] { height: 1800px; }
iframe.embed[src*="docs.google.com/forms"] { height: 1620px; }
@media (max-width: 640px) {
  iframe.embed[src*="google.com/maps"] { height: 320px; }
}