/* 東池袋マンションナビ — エリア魅力 詳細ページ共通スタイル（ダークテーマ） */
:root {
  --gold: #c9a84c;
  --gold-light: #e8c97a;
  --gold-dark: #9a7830;
  --navy: #0d1b2e;
  --navy-mid: #1a2d45;
  --navy-light: #243652;
  --white: #f8f5ef;
  --gray: #8a8a8a;
  --font-ja: 'Noto Serif JP', serif;
  --font-en: 'Cormorant Garamond', serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-ja); background: var(--navy); color: var(--white); overflow-x: hidden; }

/* NAV */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 40px; background: rgba(13,27,46,0.92);
  backdrop-filter: blur(12px); border-bottom: 1px solid rgba(201,168,76,0.2);
}
.nav-left { display: flex; flex-direction: column; gap: 4px; }
.nav-back { font-size: 10px; color: var(--gray); letter-spacing: 0.1em; text-decoration: none; transition: color 0.2s; }
.nav-back:hover { color: var(--gold); }
.nav-logo { font-family: var(--font-en); font-size: 18px; color: var(--gold); letter-spacing: 0.1em; }
.nav-logo span { font-family: var(--font-ja); font-size: 12px; color: var(--gray); display: block; letter-spacing: 0.15em; margin-top: 2px; }

/* BREADCRUMB */
.breadcrumb {
  position: fixed; top: 64px; left: 0; right: 0; z-index: 99; padding: 8px 40px;
  background: rgba(13,27,46,0.92); backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(201,168,76,0.1);
  font-size: 11px; color: var(--gray); letter-spacing: 0.05em;
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
}
.breadcrumb a { color: var(--gray); text-decoration: none; transition: color 0.2s; }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb-current { color: var(--gold); }

/* HERO */
.area-hero {
  min-height: 56vh; padding: 160px 40px 64px; position: relative; overflow: hidden;
  display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center;
  background: linear-gradient(135deg, #0a1520 0%, #0d1b2e 45%, #1a2d45 100%);
}
.area-hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0.22; }
.area-hero::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse 60% 50% at 50% 50%, rgba(201,168,76,0.08) 0%, transparent 70%); }
.area-hero-inner { position: relative; z-index: 1; max-width: 800px; }
.area-hero-num { font-family: var(--font-en); font-size: 13px; letter-spacing: 0.4em; color: rgba(201,168,76,0.7); margin-bottom: 16px; }
.area-hero-label { font-family: var(--font-en); font-size: 11px; letter-spacing: 0.4em; color: var(--gold); text-transform: uppercase; margin-bottom: 16px; }
.area-hero-title { font-size: clamp(24px, 4vw, 40px); font-weight: 300; line-height: 1.5; letter-spacing: 0.06em; margin-bottom: 20px; }
.area-hero-title strong { font-weight: 700; color: var(--gold); }
.area-hero-lead { font-size: 14px; color: rgba(248,245,239,0.78); line-height: 2; max-width: 640px; margin: 0 auto; }

/* BODY */
.area-body { max-width: 880px; margin: 0 auto; padding: 72px 40px; }
.area-block { margin-bottom: 64px; }
.area-block:last-child { margin-bottom: 0; }
.area-block-label { font-family: var(--font-en); font-size: 11px; letter-spacing: 0.3em; color: var(--gold); text-transform: uppercase; margin-bottom: 10px; }
.area-block-title { font-size: clamp(18px, 2.4vw, 24px); font-weight: 700; color: var(--white); line-height: 1.5; margin-bottom: 20px; }
.area-block-title strong { color: var(--gold); }
.area-block p { font-size: 14px; line-height: 2.1; color: rgba(248,245,239,0.82); margin-bottom: 16px; }
.area-block p:last-child { margin-bottom: 0; }
.area-gold-line { width: 40px; height: 1px; background: var(--gold); margin-bottom: 28px; }

/* FIGURE（写真） */
.area-figure { margin: 28px 0; border: 1px solid rgba(201,168,76,0.2); background: var(--navy-mid); }
.area-figure img { width: 100%; display: block; aspect-ratio: 16/9; object-fit: cover; background: var(--navy-light); }
.area-figcaption { padding: 12px 16px; font-size: 12px; color: var(--gray); line-height: 1.7; border-top: 1px solid rgba(201,168,76,0.12); }
.area-figcaption strong { color: var(--gold-light); font-weight: 500; }
.area-figure-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 28px 0; }
.area-figure-grid .area-figure { margin: 0; }

/* 箇条書き */
.area-list { list-style: none; padding: 0; margin: 16px 0 0; }
.area-list li { font-size: 13px; color: rgba(248,245,239,0.8); line-height: 1.9; padding-left: 18px; position: relative; margin-bottom: 8px; }
.area-list li::before { content: ''; position: absolute; left: 0; top: 9px; width: 6px; height: 6px; border: 1px solid var(--gold); transform: rotate(45deg); }

/* 関連リンク / CTA */
.area-nextlinks { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
.area-nextlink { display: block; padding: 16px 18px; border: 1px solid rgba(201,168,76,0.2); background: var(--navy-mid); color: var(--white); text-decoration: none; font-size: 13px; transition: all 0.2s; }
.area-nextlink:hover { border-color: var(--gold); transform: translateY(-2px); }
.area-nextlink span { display: block; font-size: 10px; color: var(--gold); letter-spacing: 0.2em; margin-bottom: 4px; font-family: var(--font-en); }

.area-cta { background: linear-gradient(135deg, var(--navy-mid) 0%, var(--navy) 100%); border-top: 1px solid rgba(201,168,76,0.15); border-bottom: 1px solid rgba(201,168,76,0.15); text-align: center; padding: 72px 40px; }
.area-cta-title { font-size: clamp(18px, 2.4vw, 26px); font-weight: 400; line-height: 1.6; margin-bottom: 28px; }
.area-cta-title strong { color: var(--gold); font-weight: 700; }
.area-cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.area-btn-primary { padding: 14px 32px; background: var(--gold); color: var(--navy); font-family: var(--font-ja); font-size: 14px; font-weight: 700; border: none; cursor: pointer; letter-spacing: 0.1em; text-decoration: none; transition: all 0.2s; }
.area-btn-primary:hover { background: var(--gold-light); }
.area-btn-outline { padding: 14px 32px; border: 1px solid var(--gold); background: transparent; color: var(--gold); font-family: var(--font-ja); font-size: 14px; cursor: pointer; letter-spacing: 0.1em; text-decoration: none; transition: all 0.2s; }
.area-btn-outline:hover { background: rgba(201,168,76,0.1); }

/* FOOTER */
footer { background: #08111e; border-top: 1px solid rgba(201,168,76,0.2); padding: 48px 40px; }
.footer-wrap { max-width: 900px; margin: 0 auto; }
.footer-brand-name { font-family: var(--font-en); font-size: 20px; color: var(--gold); margin-bottom: 4px; }
.footer-brand-sub { font-size: 11px; color: var(--gray); letter-spacing: 0.1em; }
.footer-copy { margin-top: 24px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,0.06); font-size: 10px; color: rgba(138,138,138,0.6); letter-spacing: 0.1em; }

@media (max-width: 768px) {
  nav { padding: 12px 20px; }
  .breadcrumb { padding: 8px 20px; top: 52px; font-size: 10px; }
  .area-body { padding: 56px 20px; }
  .area-hero { padding: 130px 20px 48px; }
  .area-figure-grid { grid-template-columns: 1fr; }
  .area-nextlinks { grid-template-columns: 1fr; }
  .area-cta { padding: 56px 20px; }
  .area-cta-btns { flex-direction: column; align-items: center; }
}

/* ── コラム一覧ページ用 ── */
.col-list-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.col-card { background: var(--navy-mid); border: 1px solid rgba(201,168,76,0.15); overflow: hidden; text-decoration: none; color: inherit; transition: all 0.3s; display: flex; flex-direction: column; }
.col-card:hover { border-color: var(--gold); transform: translateY(-4px); }
.col-card-img { height: 180px; background-size: cover; background-position: center; background-color: var(--navy-light); }
.col-card-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.col-card-cat { font-size: 10px; color: var(--gold); letter-spacing: 0.15em; margin-bottom: 8px; }
.col-card-date { font-family: var(--font-en); font-size: 11px; color: var(--gray); letter-spacing: 0.1em; margin-bottom: 8px; }
.col-card-title { font-size: 15px; font-weight: 700; line-height: 1.6; margin-bottom: 10px; color: var(--white); }
.col-card-excerpt { font-size: 12px; color: rgba(248,245,239,0.7); line-height: 1.8; margin-bottom: 14px; flex: 1; }
.col-card-link { font-size: 11px; color: var(--gold); letter-spacing: 0.1em; }
@media (max-width: 900px) { .col-list-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .col-list-grid { grid-template-columns: 1fr; } }

/* ── コラム記事本文（Notion本文 → HTML） ── */
.col-article { font-size: 15px; line-height: 2.05; color: rgba(248,245,239,0.85); }
.col-article > *:first-child { margin-top: 0; }
.col-article h2 { font-size: clamp(20px,2.6vw,26px); font-weight: 700; color: var(--white); line-height: 1.5; margin: 48px 0 14px; padding-bottom: 12px; border-bottom: 1px solid rgba(201,168,76,0.25); }
.col-article h2 strong, .col-article h3 strong { color: var(--gold); }
.col-article h3 { font-size: clamp(17px,2.2vw,21px); font-weight: 700; color: var(--gold-light); margin: 34px 0 12px; }
.col-article h4 { font-size: 16px; font-weight: 700; color: var(--white); margin: 26px 0 10px; }
.col-article p { margin: 0 0 18px; }
.col-article a { color: var(--gold); text-decoration: underline; text-underline-offset: 2px; }
.col-article a:hover { color: var(--gold-light); }
.col-article strong { color: var(--white); font-weight: 700; }
.col-article ul, .col-article ol { margin: 0 0 18px; padding-left: 1.4em; }
.col-article li { margin-bottom: 8px; line-height: 1.9; }
.col-article blockquote { margin: 24px 0; padding: 14px 20px; border-left: 3px solid var(--gold); background: rgba(201,168,76,0.06); color: rgba(248,245,239,0.8); font-size: 14px; }
.col-article figure { margin: 28px 0; }
.col-article figure img { width: 100%; border: 1px solid rgba(201,168,76,0.2); display: block; }
.col-article figcaption { font-size: 12px; color: var(--gray); margin-top: 8px; text-align: center; }
.col-article hr { border: none; border-top: 1px solid rgba(201,168,76,0.2); margin: 36px 0; }
.col-article code { background: rgba(255,255,255,0.08); padding: 2px 6px; border-radius: 3px; font-size: 0.9em; }
.col-article pre { background: rgba(0,0,0,0.3); border: 1px solid rgba(201,168,76,0.15); padding: 16px; overflow-x: auto; margin: 0 0 18px; }
.col-article .data-table-wrap { overflow-x: auto; margin: 0 0 22px; }
.col-article table.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.col-article table.data-table th { background: rgba(201,168,76,0.15); color: var(--gold); padding: 10px 12px; text-align: left; border: 1px solid rgba(201,168,76,0.2); }
.col-article table.data-table td { padding: 10px 12px; border: 1px solid rgba(255,255,255,0.08); color: rgba(248,245,239,0.82); }
.col-article .callout { display: flex; gap: 12px; padding: 16px 18px; margin: 0 0 20px; border-radius: 6px; background: rgba(201,168,76,0.08); border: 1px solid rgba(201,168,76,0.2); font-size: 14px; }
.col-article details { margin: 0 0 16px; border: 1px solid rgba(201,168,76,0.2); padding: 12px 16px; }
.col-article summary { cursor: pointer; color: var(--gold); font-weight: 500; }
.col-article .columns { display: flex; gap: 20px; flex-wrap: wrap; }
.col-article .columns .column { flex: 1; min-width: 240px; }

/* ── 目次 ── */
.toc-box { background: var(--navy-mid); border: 1px solid rgba(201,168,76,0.2); padding: 22px 26px; margin: 0 0 40px; }
.toc-box-title { font-size: 12px; color: var(--gold); letter-spacing: 0.2em; font-weight: 700; margin-bottom: 14px; }
.toc-list { list-style: none; counter-reset: toc; padding-left: 0; margin: 0; }
.toc-list > li { counter-increment: toc; margin-bottom: 8px; }
.toc-list > li::before { content: counter(toc) ". "; color: var(--gold); font-family: var(--font-en); }
.toc-list a { color: rgba(248,245,239,0.82); text-decoration: none; font-size: 14px; }
.toc-list a:hover { color: var(--gold); }
.toc-list ol { list-style: none; padding-left: 18px; margin: 6px 0 0; }
.toc-list ol li { margin-bottom: 5px; font-size: 13px; }
.toc-list ol a { color: var(--gray); }

/* ── FAQ（記事内） ── */
.article-section { margin: 56px 0 0; }
.article-section-label { font-family: var(--font-en); font-size: 11px; letter-spacing: 0.3em; color: var(--gold); text-transform: uppercase; margin-bottom: 10px; }
.article-section h2 { font-size: clamp(20px,2.6vw,26px); font-weight: 300; color: var(--white); margin-bottom: 16px; }
.article-section h2 strong { color: var(--gold); font-weight: 700; }
.section-gold-line { width: 40px; height: 1px; background: var(--gold); margin-bottom: 28px; }
.article-section .mansion-link { color: var(--gold); text-decoration: none; border-bottom: 1px solid rgba(201,168,76,0.3); }
.faq-list .faq-item { border-bottom: 1px solid rgba(201,168,76,0.12); }
.faq-list .faq-question { width: 100%; padding: 18px 0; background: none; border: none; display: flex; justify-content: space-between; align-items: center; cursor: pointer; text-align: left; gap: 16px; }
.faq-list .faq-question span:first-child { font-size: 14px; font-weight: 500; color: var(--white); line-height: 1.6; }
.faq-list .faq-toggle { flex-shrink: 0; width: 26px; height: 26px; border: 1px solid rgba(201,168,76,0.3); display: flex; align-items: center; justify-content: center; font-family: var(--font-en); font-size: 17px; color: var(--gold); transition: transform 0.3s; }
.faq-list .faq-item.open .faq-toggle { transform: rotate(45deg); }
.faq-list .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.4s ease; }
.faq-list .faq-item.open .faq-answer { max-height: 600px; padding-bottom: 18px; }
.faq-list .faq-answer p { font-size: 13px; color: rgba(248,245,239,0.75); line-height: 2; }