/* ==========================================================
   CLT・木造中高層建築レポート 共通スタイル
   建築的ミニマル: 木肌ベージュ地 × 炭色 × 木目色
   ========================================================== */
:root {
  --bg: #f3efe8;
  --bg-deep: #ece6db;
  --ink: #23201c;
  --ink-soft: #4a443c;
  --brown: #5d4a36;
  --wood: #c8a165;
  --wood-soft: #dcc39a;
  --line: rgba(35, 32, 28, 0.16);
  --line-strong: rgba(35, 32, 28, 0.4);
  --paper: #faf8f3;
  --font-sans: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 96px 96px;
  color: var(--ink);
  line-height: 1.9;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--brown);
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

a:hover {
  color: var(--wood);
}

ul,
ol {
  list-style: none;
}

.mono,
.stat-number,
.news-date,
.page-eyebrow,
.section-index {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

/* ---------- 共通コンテナ ---------- */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- ヘッダー ---------- */
.site-header {
  background: var(--bg);
  border-bottom: 1px solid var(--line-strong);
  position: relative;
  z-index: 50;
}

.header-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 20px 24px 0;
}

.brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 16px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--ink);
}

.brand-link:hover {
  color: var(--ink);
  opacity: 0.75;
}

.brand-mark {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--bg);
  background: var(--ink);
  border: 1px solid var(--ink);
  padding: 8px 10px;
  line-height: 1.2;
  text-align: center;
}

.brand-text {
  display: block;
}

.brand-title {
  display: block;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.4;
}

.brand-subtitle {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--ink-soft);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 48px;
  height: 48px;
  background: transparent;
  border: 1px solid var(--line-strong);
  cursor: pointer;
  padding: 12px;
}

.nav-toggle-line {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--ink);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle.is-open .nav-toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-open .nav-toggle-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open .nav-toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.global-nav {
  border-top: 1px solid var(--line);
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 900px;
  margin: 0 auto;
}

.nav-list li a {
  display: block;
  white-space: nowrap;
  padding: 12px 14px;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink);
  border-bottom: 2px solid transparent;
}

.nav-list li a:hover,
.nav-list li a.is-current {
  color: var(--brown);
  border-bottom-color: var(--wood);
}

/* ---------- ヒーロー（トップ） ---------- */
.hero {
  position: relative;
  border-bottom: 1px solid var(--line-strong);
}

.hero-image {
  width: 100%;
  height: 520px;
  object-fit: cover;
}

.hero-copy {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.28em;
  color: #f8f4ec;
  text-shadow: 0 2px 10px rgba(20, 16, 10, 0.9);
  border-left: 2px solid var(--wood);
  padding-left: 12px;
  margin-bottom: 18px;
}

.hero-copy h1 {
  font-size: clamp(1.7rem, 4.4vw, 3rem);
  font-weight: 900;
  line-height: 1.35;
  letter-spacing: 0.05em;
  color: #fdfbf6;
  text-shadow: 0 2px 6px rgba(20, 16, 10, 0.95), 0 6px 24px rgba(20, 16, 10, 0.8);
  max-width: 21em;
}

.hero-lead {
  margin-top: 18px;
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
  font-weight: 500;
  color: #f6f1e7;
  text-shadow: 0 1px 4px rgba(20, 16, 10, 0.95), 0 4px 16px rgba(20, 16, 10, 0.8);
  max-width: 34em;
}

/* ---------- ページヒーロー（下層） ---------- */
.page-hero {
  position: relative;
  border-bottom: 1px solid var(--line-strong);
}

.page-hero-image {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.page-hero-copy {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.page-eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.3em;
  color: #f8f4ec;
  text-shadow: 0 2px 8px rgba(20, 16, 10, 0.9);
  margin-bottom: 12px;
}

.page-hero-copy h1 {
  font-size: clamp(1.5rem, 3.4vw, 2.3rem);
  font-weight: 900;
  letter-spacing: 0.05em;
  line-height: 1.4;
  color: #fdfbf6;
  text-shadow: 0 2px 6px rgba(20, 16, 10, 0.95), 0 6px 22px rgba(20, 16, 10, 0.8);
}

/* ---------- セクション共通 ---------- */
.section {
  padding: 72px 0;
  border-bottom: 1px solid var(--line);
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 36px;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 14px;
}

.section-index {
  font-size: 0.85rem;
  color: var(--brown);
}

.section-head h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.section-lead {
  max-width: 46em;
  color: var(--ink-soft);
  margin-bottom: 32px;
}

/* ---------- ニュースリスト ---------- */
.news-list {
  border-top: 1px solid var(--line-strong);
}

.news-list li {
  border-bottom: 1px solid var(--line);
}

.news-list a,
.news-list .news-row {
  display: flex;
  gap: 20px;
  align-items: baseline;
  padding: 16px 8px;
  color: var(--ink);
}

.news-list a:hover {
  background: var(--paper);
  color: var(--brown);
}

.news-date {
  flex-shrink: 0;
  font-size: 0.82rem;
  color: var(--brown);
}

.news-tag {
  flex-shrink: 0;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  border: 1px solid var(--wood);
  color: var(--brown);
  padding: 1px 8px;
}

.news-title {
  font-size: 0.95rem;
}

/* ---------- カードグリッド ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
}

.report-card {
  background: var(--paper);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  color: var(--ink);
}

.report-card:hover {
  background: var(--bg-deep);
  color: var(--ink);
}

.report-card .card-index {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--wood);
  letter-spacing: 0.2em;
}

.report-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.report-card p {
  font-size: 0.85rem;
  color: var(--ink-soft);
  line-height: 1.8;
}

.report-card .card-more {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--brown);
}

/* ---------- 統計カード ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1px;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
  margin: 28px 0;
}

.stat-card {
  background: var(--paper);
  padding: 22px 20px;
}

.stat-label {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.stat-number {
  font-size: 1.7rem;
  font-weight: 600;
  color: var(--brown);
  line-height: 1.3;
}

.stat-number small {
  font-size: 0.85rem;
  margin-left: 4px;
  color: var(--ink-soft);
}

.stat-note {
  font-size: 0.72rem;
  color: var(--ink-soft);
  margin-top: 6px;
}

/* ---------- 表 ---------- */
.data-table-wrap {
  overflow-x: auto;
  margin: 28px 0;
  border: 1px solid var(--line-strong);
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper);
  font-size: 0.88rem;
}

table.data-table caption {
  text-align: left;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  padding: 10px 14px;
  background: var(--bg-deep);
  border-bottom: 1px solid var(--line-strong);
}

table.data-table th,
table.data-table td {
  border: 1px solid var(--line);
  padding: 10px 14px;
  text-align: left;
  vertical-align: top;
}

table.data-table thead th {
  background: var(--ink);
  color: var(--bg);
  font-weight: 500;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
}

table.data-table td.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
  white-space: nowrap;
}

/* ---------- 横棒グラフ（CSS図表） ---------- */
.bar-chart {
  margin: 28px 0;
  border: 1px solid var(--line-strong);
  background: var(--paper);
  padding: 22px 20px;
}

.bar-chart-title {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  margin-bottom: 16px;
  border-left: 3px solid var(--wood);
  padding-left: 10px;
}

.bar-row {
  display: grid;
  grid-template-columns: 9em 1fr 5.5em;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 0.82rem;
}

.bar-label {
  color: var(--ink-soft);
}

.bar-track {
  background: var(--bg-deep);
  border: 1px solid var(--line);
  height: 14px;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--brown), var(--wood));
}

.bar-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
  color: var(--brown);
}

.chart-note {
  font-size: 0.72rem;
  color: var(--ink-soft);
  margin-top: 10px;
}

/* ---------- 2カラムレイアウト ---------- */
.layout-two-col {
  max-width: 1160px;
  margin: 0 auto;
  padding: 56px 24px 72px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
}

.page-content {
  min-width: 0;
}

.page-lead {
  color: var(--ink-soft);
  border-left: 3px solid var(--wood);
  padding-left: 18px;
  margin-bottom: 44px;
}

.page-content section {
  margin-bottom: 56px;
}

.page-content h2 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.5;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 12px;
  margin-bottom: 24px;
  position: relative;
}

.page-content h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 64px;
  height: 3px;
  background: var(--wood);
}

.page-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin: 28px 0 14px;
  padding-left: 12px;
  border-left: 3px solid var(--wood);
}

.page-content p {
  margin-bottom: 18px;
}

.page-content ul.disc-list {
  list-style: none;
  margin: 0 0 18px;
}

.page-content ul.disc-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
}

.page-content ul.disc-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 10px;
  height: 1px;
  background: var(--brown);
}

.key-point {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-left: 4px solid var(--wood);
  padding: 18px 20px;
  margin: 24px 0;
  font-size: 0.92rem;
}

.key-point strong {
  color: var(--brown);
}

/* ---------- ページ送り ---------- */
.page-pager {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--line-strong);
  padding-top: 24px;
}

.page-pager a {
  font-size: 0.85rem;
  border: 1px solid var(--line-strong);
  padding: 10px 18px;
  color: var(--ink);
  background: var(--paper);
}

.page-pager a:hover {
  background: var(--bg-deep);
  color: var(--brown);
}

/* ---------- サイドバー ---------- */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
  position: sticky;
  top: 24px;
}

.sidebar-block {
  border: 1px solid var(--line-strong);
  background: var(--paper);
  padding: 20px 18px;
}

.sidebar-block h2 {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  border-bottom: 1px solid var(--line);
  padding-bottom: 10px;
  margin-bottom: 14px;
}

.sidebar-block ul li {
  border-bottom: 1px dashed var(--line);
}

.sidebar-block ul li:last-child {
  border-bottom: none;
}

.sidebar-block ul li a {
  display: block;
  padding: 9px 2px;
  font-size: 0.84rem;
  color: var(--ink);
}

.sidebar-block ul li a:hover {
  color: var(--brown);
  padding-left: 6px;
}

.toc-list {
  counter-reset: toc;
}

.toc-list li a {
  position: relative;
  padding-left: 30px;
}

.toc-list li a::before {
  counter-increment: toc;
  content: counter(toc, decimal-leading-zero);
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--wood);
  top: 12px;
}

.ad-block {
  padding: 14px;
  text-align: center;
  overflow: hidden;
}

.ad-block .ad-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.ad-block img {
  margin: 0 auto;
  max-width: 100%;
  height: auto;
}

.amazon-banner {
  border: 1px solid var(--wood);
  background: var(--bg);
}

.amazon-banner a {
  display: block;
  padding: 16px 12px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--brown);
}

.amazon-banner a:hover {
  background: var(--bg-deep);
}

.ad-inline {
  margin: 28px 0;
  padding: 16px;
  border: 1px dashed var(--line-strong);
  text-align: center;
  overflow-x: auto;
}

.ad-inline img {
  display: inline-block;
  max-width: 100%;
  height: auto;
}

.ad-inline .ad-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

/* ---------- フッター ---------- */
.site-footer {
  background: var(--ink);
  color: #d9d2c5;
  border-top: 3px solid var(--wood);
  margin-top: 0;
}

.footer-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 56px 24px 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(243, 239, 232, 0.2);
}

.footer-about {
  max-width: 34em;
}

.footer-brand {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #f3efe8;
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 0.82rem;
  line-height: 1.9;
  color: #b8ae9d;
}

.footer-heading {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  color: var(--wood);
  margin-bottom: 14px;
}

.footer-nav ul li,
.footer-related ul li {
  margin-bottom: 8px;
}

.footer-nav ul li a,
.footer-related ul li a {
  font-size: 0.82rem;
  color: #d9d2c5;
}

.footer-nav ul li a:hover,
.footer-related ul li a:hover {
  color: var(--wood);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 28px;
  padding: 24px 0 10px;
}

.footer-links a {
  font-size: 0.8rem;
  color: #d9d2c5;
}

.footer-links a:hover {
  color: var(--wood);
}

.footer-copy {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: #8f8574;
  padding-top: 10px;
}

/* ---------- レスポンシブ ---------- */
@media (max-width: 960px) {
  .layout-two-col {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .sidebar {
    position: static;
  }

  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

@media (max-width: 768px) {
  body {
    background-size: 64px 64px;
  }

  .nav-toggle {
    display: flex;
  }

  .global-nav {
    display: none;
    border-top: 1px solid var(--line-strong);
  }

  .global-nav.is-open {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    max-width: none;
  }

  .nav-list li a {
    white-space: normal;
    border-bottom: 1px solid var(--line);
    padding: 14px 8px;
  }

  .hero-image {
    height: 420px;
  }

  .page-hero-image {
    height: 260px;
  }

  .section {
    padding: 52px 0;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .news-list a,
  .news-list .news-row {
    flex-wrap: wrap;
    gap: 8px 14px;
  }

  .bar-row {
    grid-template-columns: 6.5em 1fr 4.5em;
    font-size: 0.76rem;
  }
}

/* Mobile content-width baseline. Blog-specific rules live in blog/blog.css. */
@media (max-width: 768px) {
  .page-content, .two-col-layout { padding-inline: 16px; }
  .two-col-layout, .blog-main { min-width: 0; }
  .sidebar { position: static; order: 2; }
}